eventespresso / event-espresso-core

vendor/phenx/php-svg-lib/src/Svg/Tag/StyleTag.php

Indentation +10 added lines, -10 removed lines

@@ -12,16 +12,16 @@
 
 class StyleTag extends AbstractTag
 {
-    protected $text = "";
+	protected $text = "";
 
-    public function end()
-    {
-        $parser = new CSS\Parser($this->text);
-        $this->document->appendStyleSheet($parser->parse());
-    }
+	public function end()
+	{
+		$parser = new CSS\Parser($this->text);
+		$this->document->appendStyleSheet($parser->parse());
+	}
 
-    public function appendText($text)
-    {
-        $this->text .= $text;
-    }
+	public function appendText($text)
+	{
+		$this->text .= $text;
+	}
 } 

vendor/phenx/php-svg-lib/src/Svg/Tag/Group.php

Indentation +13 added lines, -13 removed lines

@@ -12,22 +12,22 @@
 
 class Group extends AbstractTag
 {
-    protected function before($attributes)
-    {
-        $surface = $this->document->getSurface();
+	protected function before($attributes)
+	{
+		$surface = $this->document->getSurface();
 
-        $surface->save();
+		$surface->save();
 
-        $style = $this->makeStyle($attributes);
+		$style = $this->makeStyle($attributes);
 
-        $this->setStyle($style);
-        $surface->setStyle($style);
+		$this->setStyle($style);
+		$surface->setStyle($style);
 
-        $this->applyTransform($attributes);
-    }
+		$this->applyTransform($attributes);
+	}
 
-    protected function after()
-    {
-        $this->document->getSurface()->restore();
-    }
+	protected function after()
+	{
+		$this->document->getSurface()->restore();
+	}
 } 

vendor/phenx/php-svg-lib/src/Svg/Tag/Stop.php

Indentation +3 added lines, -3 removed lines

@@ -10,8 +10,8 @@
 
 class Stop extends AbstractTag
 {
-    public function start($attributes)
-    {
+	public function start($attributes)
+	{
 
-    }
+	}
 } 

vendor/phenx/php-svg-lib/src/Svg/Tag/LinearGradient.php

Indentation +55 added lines, -55 removed lines

@@ -14,70 +14,70 @@
 
 class LinearGradient extends AbstractTag
 {
-    protected $x1;
-    protected $y1;
-    protected $x2;
-    protected $y2;
+	protected $x1;
+	protected $y1;
+	protected $x2;
+	protected $y2;
 
-    /** @var Gradient\Stop[] */
-    protected $stops = array();
+	/** @var Gradient\Stop[] */
+	protected $stops = array();
 
-    public function start($attributes)
-    {
-        parent::start($attributes);
+	public function start($attributes)
+	{
+		parent::start($attributes);
 
-        if (isset($attributes['x1'])) {
-            $this->x1 = $attributes['x1'];
-        }
-        if (isset($attributes['y1'])) {
-            $this->y1 = $attributes['y1'];
-        }
-        if (isset($attributes['x2'])) {
-            $this->x2 = $attributes['x2'];
-        }
-        if (isset($attributes['y2'])) {
-            $this->y2 = $attributes['y2'];
-        }
-    }
+		if (isset($attributes['x1'])) {
+			$this->x1 = $attributes['x1'];
+		}
+		if (isset($attributes['y1'])) {
+			$this->y1 = $attributes['y1'];
+		}
+		if (isset($attributes['x2'])) {
+			$this->x2 = $attributes['x2'];
+		}
+		if (isset($attributes['y2'])) {
+			$this->y2 = $attributes['y2'];
+		}
+	}
 
-    public function getStops() {
-        if (empty($this->stops)) {
-            foreach ($this->children as $_child) {
-                if ($_child->tagName != "stop") {
-                    continue;
-                }
+	public function getStops() {
+		if (empty($this->stops)) {
+			foreach ($this->children as $_child) {
+				if ($_child->tagName != "stop") {
+					continue;
+				}
 
-                $_stop = new Gradient\Stop();
-                $_attributes = $_child->attributes;
+				$_stop = new Gradient\Stop();
+				$_attributes = $_child->attributes;
 
-                // Style
-                if (isset($_attributes["style"])) {
-                    $_style = Style::parseCssStyle($_attributes["style"]);
+				// Style
+				if (isset($_attributes["style"])) {
+					$_style = Style::parseCssStyle($_attributes["style"]);
 
-                    if (isset($_style["stop-color"])) {
-                        $_stop->color = Style::parseColor($_style["stop-color"]);
-                    }
+					if (isset($_style["stop-color"])) {
+						$_stop->color = Style::parseColor($_style["stop-color"]);
+					}
 
-                    if (isset($_style["stop-opacity"])) {
-                        $_stop->opacity = max(0, min(1.0, $_style["stop-opacity"]));
-                    }
-                }
+					if (isset($_style["stop-opacity"])) {
+						$_stop->opacity = max(0, min(1.0, $_style["stop-opacity"]));
+					}
+				}
 
-                // Attributes
-                if (isset($_attributes["offset"])) {
-                    $_stop->offset = $_attributes["offset"];
-                }
-                if (isset($_attributes["stop-color"])) {
-                    $_stop->color = Style::parseColor($_attributes["stop-color"]);
-                }
-                if (isset($_attributes["stop-opacity"])) {
-                    $_stop->opacity = max(0, min(1.0, $_attributes["stop-opacity"]));
-                }
+				// Attributes
+				if (isset($_attributes["offset"])) {
+					$_stop->offset = $_attributes["offset"];
+				}
+				if (isset($_attributes["stop-color"])) {
+					$_stop->color = Style::parseColor($_attributes["stop-color"]);
+				}
+				if (isset($_attributes["stop-opacity"])) {
+					$_stop->opacity = max(0, min(1.0, $_attributes["stop-opacity"]));
+				}
 
-                $this->stops[] = $_stop;
-            }
-        }
+				$this->stops[] = $_stop;
+			}
+		}
 
-        return $this->stops;
-    }
+		return $this->stops;
+	}
 } 

vendor/phenx/php-svg-lib/src/Svg/Tag/RadialGradient.php

Indentation +3 added lines, -3 removed lines

@@ -10,8 +10,8 @@
 
 class RadialGradient extends AbstractTag
 {
-    public function start($attributes)
-    {
+	public function start($attributes)
+	{
 
-    }
+	}
 } 

vendor/phenx/php-svg-lib/src/Svg/Tag/ClipPath.php

Indentation +13 added lines, -13 removed lines

@@ -12,22 +12,22 @@
 
 class ClipPath extends AbstractTag
 {
-    protected function before($attributes)
-    {
-        $surface = $this->document->getSurface();
+	protected function before($attributes)
+	{
+		$surface = $this->document->getSurface();
 
-        $surface->save();
+		$surface->save();
 
-        $style = $this->makeStyle($attributes);
+		$style = $this->makeStyle($attributes);
 
-        $this->setStyle($style);
-        $surface->setStyle($style);
+		$this->setStyle($style);
+		$surface->setStyle($style);
 
-        $this->applyTransform($attributes);
-    }
+		$this->applyTransform($attributes);
+	}
 
-    protected function after()
-    {
-        $this->document->getSurface()->restore();
-    }
+	protected function after()
+	{
+		$this->document->getSurface()->restore();
+	}
 } 

vendor/phenx/php-svg-lib/src/Svg/Tag/Shape.php

Spacing +1 added lines, -1 removed lines

@@ -33,7 +33,7 @@
         if ($this->hasShape) {
             $style = $surface->getStyle();
 
-            $fill   = $style->fill   && is_array($style->fill);
+            $fill   = $style->fill && is_array($style->fill);
             $stroke = $style->stroke && is_array($style->stroke);
 
             if ($fill) {

Indentation +33 added lines, -33 removed lines

@@ -12,34 +12,34 @@ 
 
 class Shape extends AbstractTag
 {
-    protected function before($attributes)
-    {
-        $surface = $this->document->getSurface();
+	protected function before($attributes)
+	{
+		$surface = $this->document->getSurface();
 
-        $surface->save();
+		$surface->save();
 
-        $style = $this->makeStyle($attributes);
+		$style = $this->makeStyle($attributes);
 
-        $this->setStyle($style);
-        $surface->setStyle($style);
+		$this->setStyle($style);
+		$surface->setStyle($style);
 
-        $this->applyTransform($attributes);
-    }
+		$this->applyTransform($attributes);
+	}
 
-    protected function after()
-    {
-        $surface = $this->document->getSurface();
+	protected function after()
+	{
+		$surface = $this->document->getSurface();
 
-        if ($this->hasShape) {
-            $style = $surface->getStyle();
+		if ($this->hasShape) {
+			$style = $surface->getStyle();
 
-            $fill   = $style->fill   && is_array($style->fill);
-            $stroke = $style->stroke && is_array($style->stroke);
+			$fill   = $style->fill   && is_array($style->fill);
+			$stroke = $style->stroke && is_array($style->stroke);
 
-            if ($fill) {
-                if ($stroke) {
-                    $surface->fillStroke(false);
-                } else {
+			if ($fill) {
+				if ($stroke) {
+					$surface->fillStroke(false);
+				} else {
 //                    if (is_string($style->fill)) {
 //                        /** @var LinearGradient|RadialGradient $gradient */
 //                        $gradient = $this->getDocument()->getDef($style->fill);
@@ -47,17 +47,17 @@ 
 //                        var_dump($gradient->getStops());
 //                    }
 
-                    $surface->fill();
-                }
-            }
-            elseif ($stroke) {
-                $surface->stroke(false);
-            }
-            else {
-                $surface->endPath();
-            }
-        }
-
-        $surface->restore();
-    }
+					$surface->fill();
+				}
+			}
+			elseif ($stroke) {
+				$surface->stroke(false);
+			}
+			else {
+				$surface->endPath();
+			}
+		}
+
+		$surface->restore();
+	}
 } 
\ No newline at end of file

Braces +2 added lines, -4 removed lines

@@ -49,11 +49,9 @@
 
                     $surface->fill();
                 }
-            }
-            elseif ($stroke) {
+            } elseif ($stroke) {
                 $surface->stroke(false);
-            }
-            else {
+            } else {
                 $surface->endPath();
             }
         }

vendor/phenx/php-svg-lib/src/Svg/Surface/CPdf.php

Braces +6 added lines, -2 removed lines

@@ -4641,8 +4641,12 @@
             die("Unable to stream pdf: headers already sent");
         }
 
-        if (!isset($options["compress"])) $options["compress"] = true;
-        if (!isset($options["Attachment"])) $options["Attachment"] = true;
+        if (!isset($options["compress"])) {
+        	$options["compress"] = true;
+        }
+        if (!isset($options["Attachment"])) {
+        	$options["Attachment"] = true;
+        }
 
         $debug = !$options['compress'];
         $tmp = ltrim($this->output($debug));

Indentation +6362 added lines, -6362 removed lines

@@ -20,1276 +20,1276 @@ 
 
 class CPdf
 {
-    const PDF_VERSION = '1.7';
-
-    const ACROFORM_SIG_SIGNATURESEXISTS = 0x0001;
-    const ACROFORM_SIG_APPENDONLY =       0x0002;
-
-    const ACROFORM_FIELD_BUTTON =   'Btn';
-    const ACROFORM_FIELD_TEXT =     'Tx';
-    const ACROFORM_FIELD_CHOICE =   'Ch';
-    const ACROFORM_FIELD_SIG =      'Sig';
-
-    const ACROFORM_FIELD_READONLY =               0x0001;
-    const ACROFORM_FIELD_REQUIRED =               0x0002;
-
-    const ACROFORM_FIELD_TEXT_MULTILINE =         0x1000;
-    const ACROFORM_FIELD_TEXT_PASSWORD =          0x2000;
-    const ACROFORM_FIELD_TEXT_RICHTEXT =         0x10000;
-
-    const ACROFORM_FIELD_CHOICE_COMBO =          0x20000;
-    const ACROFORM_FIELD_CHOICE_EDIT =           0x40000;
-    const ACROFORM_FIELD_CHOICE_SORT =           0x80000;
-    const ACROFORM_FIELD_CHOICE_MULTISELECT =   0x200000;
-
-    const XOBJECT_SUBTYPE_FORM = 'Form';
-
-    /**
-     * @var integer The current number of pdf objects in the document
-     */
-    public $numObj = 0;
-
-    /**
-     * @var array This array contains all of the pdf objects, ready for final assembly
-     */
-    public $objects = [];
-
-    /**
-     * @var integer The objectId (number within the objects array) of the document catalog
-     */
-    public $catalogId;
-
-    /**
-     * @var integer The objectId (number within the objects array) of indirect references (Javascript EmbeddedFiles)
-     */
-    protected $indirectReferenceId = 0;
-
-    /**
-     * @var integer The objectId (number within the objects array)
-     */
-    protected $embeddedFilesId = 0;
-
-    /**
-     * AcroForm objectId
-     *
-     * @var integer
-     */
-    public $acroFormId;
-
-    /**
-     * @var int
-     */
-    public $signatureMaxLen = 5000;
-
-    /**
-     * @var array Array carrying information about the fonts that the system currently knows about
-     * Used to ensure that a font is not loaded twice, among other things
-     */
-    public $fonts = [];
-
-    /**
-     * @var string The default font metrics file to use if no other font has been loaded.
-     * The path to the directory containing the font metrics should be included
-     */
-    public $defaultFont = './fonts/Helvetica.afm';
-
-    /**
-     * @string A record of the current font
-     */
-    public $currentFont = '';
-
-    /**
-     * @var string The current base font
-     */
-    public $currentBaseFont = '';
-
-    /**
-     * @var integer The number of the current font within the font array
-     */
-    public $currentFontNum = 0;
-
-    /**
-     * @var integer
-     */
-    public $currentNode;
-
-    /**
-     * @var integer Object number of the current page
-     */
-    public $currentPage;
-
-    /**
-     * @var integer Object number of the currently active contents block
-     */
-    public $currentContents;
-
-    /**
-     * @var integer Number of fonts within the system
-     */
-    public $numFonts = 0;
-
-    /**
-     * @var integer Number of graphic state resources used
-     */
-    private $numStates = 0;
-
-    /**
-     * @var array Number of graphic state resources used
-     */
-    private $gstates = [];
-
-    /**
-     * @var array Current color for fill operations, defaults to inactive value,
-     * all three components should be between 0 and 1 inclusive when active
-     */
-    public $currentColor = null;
-
-    /**
-     * @var array Current color for stroke operations (lines etc.)
-     */
-    public $currentStrokeColor = null;
-
-    /**
-     * @var string Fill rule (nonzero or evenodd)
-     */
-    public $fillRule = "nonzero";
-
-    /**
-     * @var string Current style that lines are drawn in
-     */
-    public $currentLineStyle = '';
-
-    /**
-     * @var array Current line transparency (partial graphics state)
-     */
-    public $currentLineTransparency = ["mode" => "Normal", "opacity" => 1.0];
-
-    /**
-     * array Current fill transparency (partial graphics state)
-     */
-    public $currentFillTransparency = ["mode" => "Normal", "opacity" => 1.0];
-
-    /**
-     * @var array An array which is used to save the state of the document, mainly the colors and styles
-     * it is used to temporarily change to another state, then change back to what it was before
-     */
-    public $stateStack = [];
-
-    /**
-     * @var integer Number of elements within the state stack
-     */
-    public $nStateStack = 0;
-
-    /**
-     * @var integer Number of page objects within the document
-     */
-    public $numPages = 0;
-
-    /**
-     * @var array Object Id storage stack
-     */
-    public $stack = [];
-
-    /**
-     * @var integer Number of elements within the object Id storage stack
-     */
-    public $nStack = 0;
-
-    /**
-     * an array which contains information about the objects which are not firmly attached to pages
-     * these have been added with the addObject function
-     */
-    public $looseObjects = [];
-
-    /**
-     * array contains information about how the loose objects are to be added to the document
-     */
-    public $addLooseObjects = [];
-
-    /**
-     * @var integer The objectId of the information object for the document
-     * this contains authorship, title etc.
-     */
-    public $infoObject = 0;
-
-    /**
-     * @var integer Number of images being tracked within the document
-     */
-    public $numImages = 0;
-
-    /**
-     * @var array An array containing options about the document
-     * it defaults to turning on the compression of the objects
-     */
-    public $options = ['compression' => true];
-
-    /**
-     * @var integer The objectId of the first page of the document
-     */
-    public $firstPageId;
-
-    /**
-     * @var integer The object Id of the procset object
-     */
-    public $procsetObjectId;
-
-    /**
-     * @var array Store the information about the relationship between font families
-     * this used so that the code knows which font is the bold version of another font, etc.
-     * the value of this array is initialised in the constructor function.
-     */
-    public $fontFamilies = [];
-
-    /**
-     * @var string Folder for php serialized formats of font metrics files.
-     * If empty string, use same folder as original metrics files.
-     * This can be passed in from class creator.
-     * If this folder does not exist or is not writable, Cpdf will be **much** slower.
-     * Because of potential trouble with php safe mode, folder cannot be created at runtime.
-     */
-    public $fontcache = '';
-
-    /**
-     * @var integer The version of the font metrics cache file.
-     * This value must be manually incremented whenever the internal font data structure is modified.
-     */
-    public $fontcacheVersion = 6;
-
-    /**
-     * @var string Temporary folder.
-     * If empty string, will attempt system tmp folder.
-     * This can be passed in from class creator.
-     */
-    public $tmp = '';
-
-    /**
-     * @var string Track if the current font is bolded or italicised
-     */
-    public $currentTextState = '';
-
-    /**
-     * @var string Messages are stored here during processing, these can be selected afterwards to give some useful debug information
-     */
-    public $messages = '';
-
-    /**
-     * @var string The encryption array for the document encryption is stored here
-     */
-    public $arc4 = '';
-
-    /**
-     * @var integer The object Id of the encryption information
-     */
-    public $arc4_objnum = 0;
-
-    /**
-     * @var string The file identifier, used to uniquely identify a pdf document
-     */
-    public $fileIdentifier = '';
-
-    /**
-     * @var boolean A flag to say if a document is to be encrypted or not
-     */
-    public $encrypted = false;
-
-    /**
-     * @var string The encryption key for the encryption of all the document content (structure is not encrypted)
-     */
-    public $encryptionKey = '';
-
-    /**
-     * @var array Array which forms a stack to keep track of nested callback functions
-     */
-    public $callback = [];
-
-    /**
-     * @var integer The number of callback functions in the callback array
-     */
-    public $nCallback = 0;
-
-    /**
-     * @var array Store label->id pairs for named destinations, these will be used to replace internal links
-     * done this way so that destinations can be defined after the location that links to them
-     */
-    public $destinations = [];
-
-    /**
-     * @var array Store the stack for the transaction commands, each item in here is a record of the values of all the
-     * publiciables within the class, so that the user can rollback at will (from each 'start' command)
-     * note that this includes the objects array, so these can be large.
-     */
-    public $checkpoint = '';
-
-    /**
-     * @var array Table of Image origin filenames and image labels which were already added with o_image().
-     * Allows to merge identical images
-     */
-    public $imagelist = [];
-
-    /**
-     * @var array Table of already added alpha and plain image files for transparent PNG images.
-     */
-    protected $imageAlphaList = [];
-
-    /**
-     * @var array List of temporary image files to be deleted after processing.
-     */
-    protected $imageCache = [];
-
-    /**
-     * @var boolean Whether the text passed in should be treated as Unicode or just local character set.
-     */
-    public $isUnicode = false;
-
-    /**
-     * @var string the JavaScript code of the document
-     */
-    public $javascript = '';
-
-    /**
-     * @var boolean whether the compression is possible
-     */
-    protected $compressionReady = false;
-
-    /**
-     * @var array Current page size
-     */
-    protected $currentPageSize = ["width" => 0, "height" => 0];
-
-    /**
-     * @var array All the chars that will be required in the font subsets
-     */
-    protected $stringSubsets = [];
-
-    /**
-     * @var string The target internal encoding
-     */
-    protected static $targetEncoding = 'Windows-1252';
-
-    /**
-     * @var array
-     */
-    protected $byteRange = array();
-
-    /**
-     * @var array The list of the core fonts
-     */
-    protected static $coreFonts = [
-        'courier',
-        'courier-bold',
-        'courier-oblique',
-        'courier-boldoblique',
-        'helvetica',
-        'helvetica-bold',
-        'helvetica-oblique',
-        'helvetica-boldoblique',
-        'times-roman',
-        'times-bold',
-        'times-italic',
-        'times-bolditalic',
-        'symbol',
-        'zapfdingbats'
-    ];
-
-    /**
-     * Class constructor
-     * This will start a new document
-     *
-     * @param array   $pageSize  Array of 4 numbers, defining the bottom left and upper right corner of the page. first two are normally zero.
-     * @param boolean $isUnicode Whether text will be treated as Unicode or not.
-     * @param string  $fontcache The font cache folder
-     * @param string  $tmp       The temporary folder
-     */
-    function __construct($pageSize = [0, 0, 612, 792], $isUnicode = false, $fontcache = '', $tmp = '')
-    {
-        $this->isUnicode = $isUnicode;
-        $this->fontcache = rtrim($fontcache, DIRECTORY_SEPARATOR."/\\");
-        $this->tmp = ($tmp !== '' ? $tmp : sys_get_temp_dir());
-        $this->newDocument($pageSize);
-
-        $this->compressionReady = function_exists('gzcompress');
-
-        if (in_array('Windows-1252', mb_list_encodings())) {
-            self::$targetEncoding = 'Windows-1252';
-        }
-
-        // also initialize the font families that are known about already
-        $this->setFontFamily('init');
-    }
-
-    public function __destruct()
-    {
-        foreach ($this->imageCache as $file) {
-            if (file_exists($file)) {
-                unlink($file);
-            }
-        }
-    }
-
-    /**
-     * Document object methods (internal use only)
-     *
-     * There is about one object method for each type of object in the pdf document
-     * Each function has the same call list ($id,$action,$options).
-     * $id = the object ID of the object, or what it is to be if it is being created
-     * $action = a string specifying the action to be performed, though ALL must support:
-     *           'new' - create the object with the id $id
-     *           'out' - produce the output for the pdf object
-     * $options = optional, a string or array containing the various parameters for the object
-     *
-     * These, in conjunction with the output function are the ONLY way for output to be produced
-     * within the pdf 'file'.
-     */
-
-    /**
-     * Destination object, used to specify the location for the user to jump to, presently on opening
-     *
-     * @param $id
-     * @param $action
-     * @param string $options
-     * @return string|null
-     */
-    protected function o_destination($id, $action, $options = '')
-    {
-        switch ($action) {
-            case 'new':
-                $this->objects[$id] = ['t' => 'destination', 'info' => []];
-                $tmp = '';
-                switch ($options['type']) {
-                    case 'XYZ':
-                    /** @noinspection PhpMissingBreakStatementInspection */
-                    case 'FitR':
-                        $tmp = ' ' . $options['p3'] . $tmp;
-                    case 'FitH':
-                    case 'FitV':
-                    case 'FitBH':
-                    /** @noinspection PhpMissingBreakStatementInspection */
-                    case 'FitBV':
-                        $tmp = ' ' . $options['p1'] . ' ' . $options['p2'] . $tmp;
-                    case 'Fit':
-                    case 'FitB':
-                        $tmp = $options['type'] . $tmp;
-                        $this->objects[$id]['info']['string'] = $tmp;
-                        $this->objects[$id]['info']['page'] = $options['page'];
-                }
-                break;
-
-            case 'out':
-                $o = &$this->objects[$id];
-
-                $tmp = $o['info'];
-                $res = "\n$id 0 obj\n" . '[' . $tmp['page'] . ' 0 R /' . $tmp['string'] . "]\nendobj";
-
-                return $res;
-        }
-
-        return null;
-    }
-
-    /**
-     * set the viewer preferences
-     *
-     * @param $id
-     * @param $action
-     * @param string|array $options
-     * @return string|null
-     */
-    protected function o_viewerPreferences($id, $action, $options = '')
-    {
-        switch ($action) {
-            case 'new':
-                $this->objects[$id] = ['t' => 'viewerPreferences', 'info' => []];
-                break;
-
-            case 'add':
-                $o = &$this->objects[$id];
-
-                foreach ($options as $k => $v) {
-                    switch ($k) {
-                        // Boolean keys
-                        case 'HideToolbar':
-                        case 'HideMenubar':
-                        case 'HideWindowUI':
-                        case 'FitWindow':
-                        case 'CenterWindow':
-                        case 'DisplayDocTitle':
-                        case 'PickTrayByPDFSize':
-                            $o['info'][$k] = (bool)$v;
-                            break;
-
-                        // Integer keys
-                        case 'NumCopies':
-                            $o['info'][$k] = (int)$v;
-                            break;
-
-                        // Name keys
-                        case 'ViewArea':
-                        case 'ViewClip':
-                        case 'PrintClip':
-                        case 'PrintArea':
-                            $o['info'][$k] = (string)$v;
-                            break;
-
-                        // Named with limited valid values
-                        case 'NonFullScreenPageMode':
-                            if (!in_array($v, ['UseNone', 'UseOutlines', 'UseThumbs', 'UseOC'])) {
-                                break;
-                            }
-                            $o['info'][$k] = $v;
-                            break;
-
-                        case 'Direction':
-                            if (!in_array($v, ['L2R', 'R2L'])) {
-                                break;
-                            }
-                            $o['info'][$k] = $v;
-                            break;
-
-                        case 'PrintScaling':
-                            if (!in_array($v, ['None', 'AppDefault'])) {
-                                break;
-                            }
-                            $o['info'][$k] = $v;
-                            break;
-
-                        case 'Duplex':
-                            if (!in_array($v, ['None', 'Simplex', 'DuplexFlipShortEdge', 'DuplexFlipLongEdge'])) {
-                                break;
-                            }
-                            $o['info'][$k] = $v;
-                            break;
-
-                        // Integer array
-                        case 'PrintPageRange':
-                            // Cast to integer array
-                            foreach ($v as $vK => $vV) {
-                                $v[$vK] = (int)$vV;
-                            }
-                            $o['info'][$k] = array_values($v);
-                            break;
-                    }
-                }
-                break;
-
-            case 'out':
-                $o = &$this->objects[$id];
-                $res = "\n$id 0 obj\n<< ";
-
-                foreach ($o['info'] as $k => $v) {
-                    if (is_string($v)) {
-                        $v = '/' . $v;
-                    } elseif (is_int($v)) {
-                        $v = (string) $v;
-                    } elseif (is_bool($v)) {
-                        $v = ($v ? 'true' : 'false');
-                    } elseif (is_array($v)) {
-                        $v = '[' . implode(' ', $v) . ']';
-                    }
-                    $res .= "\n/$k $v";
-                }
-                $res .= "\n>>\nendobj";
-
-                return $res;
-        }
-
-        return null;
-    }
-
-    /**
-     * define the document catalog, the overall controller for the document
-     *
-     * @param $id
-     * @param $action
-     * @param string|array $options
-     * @return string|null
-     */
-    protected function o_catalog($id, $action, $options = '')
-    {
-        if ($action !== 'new') {
-            $o = &$this->objects[$id];
-        }
-
-        switch ($action) {
-            case 'new':
-                $this->objects[$id] = ['t' => 'catalog', 'info' => []];
-                $this->catalogId = $id;
-                break;
-
-            case 'acroform':
-            case 'outlines':
-            case 'pages':
-            case 'openHere':
-            case 'names':
-                $o['info'][$action] = $options;
-                break;
-
-            case 'viewerPreferences':
-                if (!isset($o['info']['viewerPreferences'])) {
-                    $this->numObj++;
-                    $this->o_viewerPreferences($this->numObj, 'new');
-                    $o['info']['viewerPreferences'] = $this->numObj;
-                }
-
-                $vp = $o['info']['viewerPreferences'];
-                $this->o_viewerPreferences($vp, 'add', $options);
-
-                break;
-
-            case 'out':
-                $res = "\n$id 0 obj\n<< /Type /Catalog";
-
-                foreach ($o['info'] as $k => $v) {
-                    switch ($k) {
-                        case 'outlines':
-                            $res .= "\n/Outlines $v 0 R";
-                            break;
-
-                        case 'pages':
-                            $res .= "\n/Pages $v 0 R";
-                            break;
-
-                        case 'viewerPreferences':
-                            $res .= "\n/ViewerPreferences $v 0 R";
-                            break;
-
-                        case 'openHere':
-                            $res .= "\n/OpenAction $v 0 R";
-                            break;
-
-                        case 'names':
-                            $res .= "\n/Names $v 0 R";
-                            break;
-
-                        case 'acroform':
-                            $res .= "\n/AcroForm $v 0 R";
-                            break;
-                    }
-                }
-
-                $res .= " >>\nendobj";
-
-                return $res;
-        }
-
-        return null;
-    }
-
-    /**
-     * object which is a parent to the pages in the document
-     *
-     * @param $id
-     * @param $action
-     * @param string $options
-     * @return string|null
-     */
-    protected function o_pages($id, $action, $options = '')
-    {
-        if ($action !== 'new') {
-            $o = &$this->objects[$id];
-        }
-
-        switch ($action) {
-            case 'new':
-                $this->objects[$id] = ['t' => 'pages', 'info' => []];
-                $this->o_catalog($this->catalogId, 'pages', $id);
-                break;
-
-            case 'page':
-                if (!is_array($options)) {
-                    // then it will just be the id of the new page
-                    $o['info']['pages'][] = $options;
-                } else {
-                    // then it should be an array having 'id','rid','pos', where rid=the page to which this one will be placed relative
-                    // and pos is either 'before' or 'after', saying where this page will fit.
-                    if (isset($options['id']) && isset($options['rid']) && isset($options['pos'])) {
-                        $i = array_search($options['rid'], $o['info']['pages']);
-                        if (isset($o['info']['pages'][$i]) && $o['info']['pages'][$i] == $options['rid']) {
-
-                            // then there is a match
-                            // make a space
-                            switch ($options['pos']) {
-                                case 'before':
-                                    $k = $i;
-                                    break;
-
-                                case 'after':
-                                    $k = $i + 1;
-                                    break;
-
-                                default:
-                                    $k = -1;
-                                    break;
-                            }
-
-                            if ($k >= 0) {
-                                for ($j = count($o['info']['pages']) - 1; $j >= $k; $j--) {
-                                    $o['info']['pages'][$j + 1] = $o['info']['pages'][$j];
-                                }
-
-                                $o['info']['pages'][$k] = $options['id'];
-                            }
-                        }
-                    }
-                }
-                break;
-
-            case 'procset':
-                $o['info']['procset'] = $options;
-                break;
-
-            case 'mediaBox':
-                $o['info']['mediaBox'] = $options;
-                // which should be an array of 4 numbers
-                $this->currentPageSize = ['width' => $options[2], 'height' => $options[3]];
-                break;
-
-            case 'font':
-                $o['info']['fonts'][] = ['objNum' => $options['objNum'], 'fontNum' => $options['fontNum']];
-                break;
-
-            case 'extGState':
-                $o['info']['extGStates'][] = ['objNum' => $options['objNum'], 'stateNum' => $options['stateNum']];
-                break;
-
-            case 'xObject':
-                $o['info']['xObjects'][] = ['objNum' => $options['objNum'], 'label' => $options['label']];
-                break;
-
-            case 'out':
-                if (count($o['info']['pages'])) {
-                    $res = "\n$id 0 obj\n<< /Type /Pages\n/Kids [";
-                    foreach ($o['info']['pages'] as $v) {
-                        $res .= "$v 0 R\n";
-                    }
-
-                    $res .= "]\n/Count " . count($this->objects[$id]['info']['pages']);
-
-                    if ((isset($o['info']['fonts']) && count($o['info']['fonts'])) ||
-                        isset($o['info']['procset']) ||
-                        (isset($o['info']['extGStates']) && count($o['info']['extGStates']))
-                    ) {
-                        $res .= "\n/Resources <<";
-
-                        if (isset($o['info']['procset'])) {
-                            $res .= "\n/ProcSet " . $o['info']['procset'] . " 0 R";
-                        }
-
-                        if (isset($o['info']['fonts']) && count($o['info']['fonts'])) {
-                            $res .= "\n/Font << ";
-                            foreach ($o['info']['fonts'] as $finfo) {
-                                $res .= "\n/F" . $finfo['fontNum'] . " " . $finfo['objNum'] . " 0 R";
-                            }
-                            $res .= "\n>>";
-                        }
-
-                        if (isset($o['info']['xObjects']) && count($o['info']['xObjects'])) {
-                            $res .= "\n/XObject << ";
-                            foreach ($o['info']['xObjects'] as $finfo) {
-                                $res .= "\n/" . $finfo['label'] . " " . $finfo['objNum'] . " 0 R";
-                            }
-                            $res .= "\n>>";
-                        }
-
-                        if (isset($o['info']['extGStates']) && count($o['info']['extGStates'])) {
-                            $res .= "\n/ExtGState << ";
-                            foreach ($o['info']['extGStates'] as $gstate) {
-                                $res .= "\n/GS" . $gstate['stateNum'] . " " . $gstate['objNum'] . " 0 R";
-                            }
-                            $res .= "\n>>";
-                        }
-
-                        $res .= "\n>>";
-                        if (isset($o['info']['mediaBox'])) {
-                            $tmp = $o['info']['mediaBox'];
-                            $res .= "\n/MediaBox [" . sprintf(
-                                    '%.3F %.3F %.3F %.3F',
-                                    $tmp[0],
-                                    $tmp[1],
-                                    $tmp[2],
-                                    $tmp[3]
-                                ) . ']';
-                        }
-                    }
-
-                    $res .= "\n >>\nendobj";
-                } else {
-                    $res = "\n$id 0 obj\n<< /Type /Pages\n/Count 0\n>>\nendobj";
-                }
-
-                return $res;
-        }
-
-        return null;
-    }
-
-    /**
-     * define the outlines in the doc, empty for now
-     *
-     * @param $id
-     * @param $action
-     * @param string $options
-     * @return string|null
-     */
-    protected function o_outlines($id, $action, $options = '')
-    {
-        if ($action !== 'new') {
-            $o = &$this->objects[$id];
-        }
-
-        switch ($action) {
-            case 'new':
-                $this->objects[$id] = ['t' => 'outlines', 'info' => ['outlines' => []]];
-                $this->o_catalog($this->catalogId, 'outlines', $id);
-                break;
-
-            case 'outline':
-                $o['info']['outlines'][] = $options;
-                break;
-
-            case 'out':
-                if (count($o['info']['outlines'])) {
-                    $res = "\n$id 0 obj\n<< /Type /Outlines /Kids [";
-                    foreach ($o['info']['outlines'] as $v) {
-                        $res .= "$v 0 R ";
-                    }
-
-                    $res .= "] /Count " . count($o['info']['outlines']) . " >>\nendobj";
-                } else {
-                    $res = "\n$id 0 obj\n<< /Type /Outlines /Count 0 >>\nendobj";
-                }
-
-                return $res;
-        }
-
-        return null;
-    }
-
-    /**
-     * an object to hold the font description
-     *
-     * @param $id
-     * @param $action
-     * @param string|array $options
-     * @return string|null
-     * @throws FontNotFoundException
-     */
-    protected function o_font($id, $action, $options = '')
-    {
-        if ($action !== 'new') {
-            $o = &$this->objects[$id];
-        }
-
-        switch ($action) {
-            case 'new':
-                $this->objects[$id] = [
-                    't'    => 'font',
-                    'info' => [
-                        'name'         => $options['name'],
-                        'fontFileName' => $options['fontFileName'],
-                        'SubType'      => 'Type1',
-                        'isSubsetting'   => $options['isSubsetting']
-                    ]
-                ];
-                $fontNum = $this->numFonts;
-                $this->objects[$id]['info']['fontNum'] = $fontNum;
-
-                // deal with the encoding and the differences
-                if (isset($options['differences'])) {
-                    // then we'll need an encoding dictionary
-                    $this->numObj++;
-                    $this->o_fontEncoding($this->numObj, 'new', $options);
-                    $this->objects[$id]['info']['encodingDictionary'] = $this->numObj;
-                } else {
-                    if (isset($options['encoding'])) {
-                        // we can specify encoding here
-                        switch ($options['encoding']) {
-                            case 'WinAnsiEncoding':
-                            case 'MacRomanEncoding':
-                            case 'MacExpertEncoding':
-                                $this->objects[$id]['info']['encoding'] = $options['encoding'];
-                                break;
-
-                            case 'none':
-                                break;
-
-                            default:
-                                $this->objects[$id]['info']['encoding'] = 'WinAnsiEncoding';
-                                break;
-                        }
-                    } else {
-                        $this->objects[$id]['info']['encoding'] = 'WinAnsiEncoding';
-                    }
-                }
-
-                if ($this->fonts[$options['fontFileName']]['isUnicode']) {
-                    // For Unicode fonts, we need to incorporate font data into
-                    // sub-sections that are linked from the primary font section.
-                    // Look at o_fontGIDtoCID and o_fontDescendentCID functions
-                    // for more information.
-                    //
-                    // All of this code is adapted from the excellent changes made to
-                    // transform FPDF to TCPDF (http://tcpdf.sourceforge.net/)
-
-                    $toUnicodeId = ++$this->numObj;
-                    $this->o_toUnicode($toUnicodeId, 'new');
-                    $this->objects[$id]['info']['toUnicode'] = $toUnicodeId;
-
-                    $cidFontId = ++$this->numObj;
-                    $this->o_fontDescendentCID($cidFontId, 'new', $options);
-                    $this->objects[$id]['info']['cidFont'] = $cidFontId;
-                }
-
-                // also tell the pages node about the new font
-                $this->o_pages($this->currentNode, 'font', ['fontNum' => $fontNum, 'objNum' => $id]);
-                break;
-
-            case 'add':
-                $font_options = $this->processFont($id, $o['info']);
-
-                if ($font_options !== false) {
-                    foreach ($font_options as $k => $v) {
-                        switch ($k) {
-                            case 'BaseFont':
-                                $o['info']['name'] = $v;
-                                break;
-                            case 'FirstChar':
-                            case 'LastChar':
-                            case 'Widths':
-                            case 'FontDescriptor':
-                            case 'SubType':
-                                $this->addMessage('o_font ' . $k . " : " . $v);
-                                $o['info'][$k] = $v;
-                                break;
-                        }
-                    }
-
-                    // pass values down to descendent font
-                    if (isset($o['info']['cidFont'])) {
-                        $this->o_fontDescendentCID($o['info']['cidFont'], 'add', $font_options);
-                    }
-                }
-                break;
-
-            case 'out':
-                if ($this->fonts[$this->objects[$id]['info']['fontFileName']]['isUnicode']) {
-                    // For Unicode fonts, we need to incorporate font data into
-                    // sub-sections that are linked from the primary font section.
-                    // Look at o_fontGIDtoCID and o_fontDescendentCID functions
-                    // for more information.
-                    //
-                    // All of this code is adapted from the excellent changes made to
-                    // transform FPDF to TCPDF (http://tcpdf.sourceforge.net/)
-
-                    $res = "\n$id 0 obj\n<</Type /Font\n/Subtype /Type0\n";
-                    $res .= "/BaseFont /" . $o['info']['name'] . "\n";
-
-                    // The horizontal identity mapping for 2-byte CIDs; may be used
-                    // with CIDFonts using any Registry, Ordering, and Supplement values.
-                    $res .= "/Encoding /Identity-H\n";
-                    $res .= "/DescendantFonts [" . $o['info']['cidFont'] . " 0 R]\n";
-                    $res .= "/ToUnicode " . $o['info']['toUnicode'] . " 0 R\n";
-                    $res .= ">>\n";
-                    $res .= "endobj";
-                } else {
-                    $res = "\n$id 0 obj\n<< /Type /Font\n/Subtype /" . $o['info']['SubType'] . "\n";
-                    $res .= "/Name /F" . $o['info']['fontNum'] . "\n";
-                    $res .= "/BaseFont /" . $o['info']['name'] . "\n";
-
-                    if (isset($o['info']['encodingDictionary'])) {
-                        // then place a reference to the dictionary
-                        $res .= "/Encoding " . $o['info']['encodingDictionary'] . " 0 R\n";
-                    } else {
-                        if (isset($o['info']['encoding'])) {
-                            // use the specified encoding
-                            $res .= "/Encoding /" . $o['info']['encoding'] . "\n";
-                        }
-                    }
-
-                    if (isset($o['info']['FirstChar'])) {
-                        $res .= "/FirstChar " . $o['info']['FirstChar'] . "\n";
-                    }
-
-                    if (isset($o['info']['LastChar'])) {
-                        $res .= "/LastChar " . $o['info']['LastChar'] . "\n";
-                    }
-
-                    if (isset($o['info']['Widths'])) {
-                        $res .= "/Widths " . $o['info']['Widths'] . " 0 R\n";
-                    }
-
-                    if (isset($o['info']['FontDescriptor'])) {
-                        $res .= "/FontDescriptor " . $o['info']['FontDescriptor'] . " 0 R\n";
-                    }
-
-                    $res .= ">>\n";
-                    $res .= "endobj";
-                }
-
-                return $res;
-        }
-
-        return null;
-    }
-
-    protected function getFontSubsettingTag(array $font): string
-    {
-        // convert font num to hexavigesimal numeral system letters A - Z only
-        $base_26 = strtoupper(base_convert($font['fontNum'], 10, 26));
-        for ($i = 0; $i < strlen($base_26); $i++) {
-            $char = $base_26[$i];
-            if ($char <= "9") {
-                $base_26[$i] = chr(65 + intval($char));
-            } else {
-                $base_26[$i] = chr(ord($char) + 10);
-            }
-        }
-
-        return 'SUB' . str_pad($base_26, 3, 'A', STR_PAD_LEFT);
-    }
-
-    /**
-     * @param int $fontObjId
-     * @param array $object_info
-     * @return array|false
-     * @throws FontNotFoundException
-     */
-    private function processFont(int $fontObjId, array $object_info)
-    {
-        $fontFileName = $object_info['fontFileName'];
-        if (!isset($this->fonts[$fontFileName])) {
-            return false;
-        }
-
-        $font = &$this->fonts[$fontFileName];
-
-        $fileSuffix = $font['fileSuffix'];
-        $fileSuffixLower = strtolower($font['fileSuffix']);
-        $fbfile = "$fontFileName.$fileSuffix";
-        $isTtfFont = $fileSuffixLower === 'ttf';
-        $isPfbFont = $fileSuffixLower === 'pfb';
-
-        $this->addMessage('selectFont: checking for - ' . $fbfile);
-
-        if (!$fileSuffix) {
-            $this->addMessage(
-                'selectFont: pfb or ttf file not found, ok if this is one of the 14 standard fonts'
-            );
-
-            return false;
-        } else {
-            $adobeFontName = isset($font['PostScriptName']) ? $font['PostScriptName'] : $font['FontName'];
-            //        $fontObj = $this->numObj;
-            $this->addMessage("selectFont: adding font file - $fbfile - $adobeFontName");
-
-            // find the array of font widths, and put that into an object.
-            $firstChar = -1;
-            $lastChar = 0;
-            $widths = [];
-            $cid_widths = [];
-
-            foreach ($font['C'] as $num => $d) {
-                if (intval($num) > 0 || $num == '0') {
-                    if (!$font['isUnicode']) {
-                        // With Unicode, widths array isn't used
-                        if ($lastChar > 0 && $num > $lastChar + 1) {
-                            for ($i = $lastChar + 1; $i < $num; $i++) {
-                                $widths[] = 0;
-                            }
-                        }
-                    }
-
-                    $widths[] = $d;
-
-                    if ($font['isUnicode']) {
-                        $cid_widths[$num] = $d;
-                    }
-
-                    if ($firstChar == -1) {
-                        $firstChar = $num;
-                    }
-
-                    $lastChar = $num;
-                }
-            }
-
-            // also need to adjust the widths for the differences array
-            if (isset($object['differences'])) {
-                foreach ($object['differences'] as $charNum => $charName) {
-                    if ($charNum > $lastChar) {
-                        if (!$object['isUnicode']) {
-                            // With Unicode, widths array isn't used
-                            for ($i = $lastChar + 1; $i <= $charNum; $i++) {
-                                $widths[] = 0;
-                            }
-                        }
-
-                        $lastChar = $charNum;
-                    }
-
-                    if (isset($font['C'][$charName])) {
-                        $widths[$charNum - $firstChar] = $font['C'][$charName];
-                        if ($font['isUnicode']) {
-                            $cid_widths[$charName] = $font['C'][$charName];
-                        }
-                    }
-                }
-            }
-
-            if ($font['isUnicode']) {
-                $font['CIDWidths'] = $cid_widths;
-            }
-
-            $this->addMessage('selectFont: FirstChar = ' . $firstChar);
-            $this->addMessage('selectFont: LastChar = ' . $lastChar);
-
-            $widthid = -1;
-
-            if (!$font['isUnicode']) {
-                // With Unicode, widths array isn't used
-
-                $this->numObj++;
-                $this->o_contents($this->numObj, 'new', 'raw');
-                $this->objects[$this->numObj]['c'] .= '[' . implode(' ', $widths) . ']';
-                $widthid = $this->numObj;
-            }
-
-            $missing_width = 500;
-            $stemV = 70;
-
-            if (isset($font['MissingWidth'])) {
-                $missing_width = $font['MissingWidth'];
-            }
-            if (isset($font['StdVW'])) {
-                $stemV = $font['StdVW'];
-            } else {
-                if (isset($font['Weight']) && preg_match('!(bold|black)!i', $font['Weight'])) {
-                    $stemV = 120;
-                }
-            }
-
-            // load the pfb file, and put that into an object too.
-            // note that pdf supports only binary format type 1 font files, though there is a
-            // simple utility to convert them from pfa to pfb.
-            $data = file_get_contents($fbfile);
-
-            // create the font descriptor
-            $this->numObj++;
-            $fontDescriptorId = $this->numObj;
-
-            $this->numObj++;
-            $pfbid = $this->numObj;
-
-            // determine flags (more than a little flakey, hopefully will not matter much)
-            $flags = 0;
-
-            if ($font['ItalicAngle'] != 0) {
-                $flags += pow(2, 6);
-            }
-
-            if ($font['IsFixedPitch'] === 'true') {
-                $flags += 1;
-            }
-
-            $flags += pow(2, 5); // assume non-sybolic
-            $list = [
-                'Ascent'       => 'Ascender',
-                'CapHeight'    => 'Ascender', //FIXME: php-font-lib is not grabbing this value, so we'll fake it and use the Ascender value // 'CapHeight'
-                'MissingWidth' => 'MissingWidth',
-                'Descent'      => 'Descender',
-                'FontBBox'     => 'FontBBox',
-                'ItalicAngle'  => 'ItalicAngle'
-            ];
-            $fdopt = [
-                'Flags'    => $flags,
-                'FontName' => $adobeFontName,
-                'StemV'    => $stemV
-            ];
-
-            foreach ($list as $k => $v) {
-                if (isset($font[$v])) {
-                    $fdopt[$k] = $font[$v];
-                }
-            }
-
-            if ($isPfbFont) {
-                $fdopt['FontFile'] = $pfbid;
-            } elseif ($isTtfFont) {
-                $fdopt['FontFile2'] = $pfbid;
-            }
-
-            $this->o_fontDescriptor($fontDescriptorId, 'new', $fdopt);
-
-            // embed the font program
-            $this->o_contents($this->numObj, 'new');
-            $this->objects[$pfbid]['c'] .= $data;
-
-            // determine the cruicial lengths within this file
-            if ($isPfbFont) {
-                $l1 = strpos($data, 'eexec') + 6;
-                $l2 = strpos($data, '00000000') - $l1;
-                $l3 = mb_strlen($data, '8bit') - $l2 - $l1;
-                $this->o_contents(
-                    $this->numObj,
-                    'add',
-                    ['Length1' => $l1, 'Length2' => $l2, 'Length3' => $l3]
-                );
-            } elseif ($isTtfFont) {
-                $l1 = mb_strlen($data, '8bit');
-                $this->o_contents($this->numObj, 'add', ['Length1' => $l1]);
-            }
-
-            // tell the font object about all this new stuff
-            $options = [
-                'BaseFont'       => $adobeFontName,
-                'MissingWidth'   => $missing_width,
-                'Widths'         => $widthid,
-                'FirstChar'      => $firstChar,
-                'LastChar'       => $lastChar,
-                'FontDescriptor' => $fontDescriptorId
-            ];
-
-            if ($isTtfFont) {
-                $options['SubType'] = 'TrueType';
-            }
-
-            $this->addMessage("adding extra info to font.($fontObjId)");
-
-            foreach ($options as $fk => $fv) {
-                $this->addMessage("$fk : $fv");
-            }
-        }
-
-        return $options;
-    }
-
-    /**
-     * A toUnicode section, needed for unicode fonts
-     *
-     * @param $id
-     * @param $action
-     * @return null|string
-     */
-    protected function o_toUnicode($id, $action)
-    {
-        switch ($action) {
-            case 'new':
-                $this->objects[$id] = [
-                    't'    => 'toUnicode'
-                ];
-                break;
-            case 'add':
-                break;
-            case 'out':
-                $ordering = 'UCS';
-                $registry = 'Adobe';
-
-                if ($this->encrypted) {
-                    $this->encryptInit($id);
-                    $ordering = $this->ARC4($ordering);
-                    $registry = $this->filterText($this->ARC4($registry), false, false);
-                }
-
-                $stream = <<<EOT
+	const PDF_VERSION = '1.7';
+
+	const ACROFORM_SIG_SIGNATURESEXISTS = 0x0001;
+	const ACROFORM_SIG_APPENDONLY =       0x0002;
+
+	const ACROFORM_FIELD_BUTTON =   'Btn';
+	const ACROFORM_FIELD_TEXT =     'Tx';
+	const ACROFORM_FIELD_CHOICE =   'Ch';
+	const ACROFORM_FIELD_SIG =      'Sig';
+
+	const ACROFORM_FIELD_READONLY =               0x0001;
+	const ACROFORM_FIELD_REQUIRED =               0x0002;
+
+	const ACROFORM_FIELD_TEXT_MULTILINE =         0x1000;
+	const ACROFORM_FIELD_TEXT_PASSWORD =          0x2000;
+	const ACROFORM_FIELD_TEXT_RICHTEXT =         0x10000;
+
+	const ACROFORM_FIELD_CHOICE_COMBO =          0x20000;
+	const ACROFORM_FIELD_CHOICE_EDIT =           0x40000;
+	const ACROFORM_FIELD_CHOICE_SORT =           0x80000;
+	const ACROFORM_FIELD_CHOICE_MULTISELECT =   0x200000;
+
+	const XOBJECT_SUBTYPE_FORM = 'Form';
+
+	/**
+	 * @var integer The current number of pdf objects in the document
+	 */
+	public $numObj = 0;
+
+	/**
+	 * @var array This array contains all of the pdf objects, ready for final assembly
+	 */
+	public $objects = [];
+
+	/**
+	 * @var integer The objectId (number within the objects array) of the document catalog
+	 */
+	public $catalogId;
+
+	/**
+	 * @var integer The objectId (number within the objects array) of indirect references (Javascript EmbeddedFiles)
+	 */
+	protected $indirectReferenceId = 0;
+
+	/**
+	 * @var integer The objectId (number within the objects array)
+	 */
+	protected $embeddedFilesId = 0;
+
+	/**
+	 * AcroForm objectId
+	 *
+	 * @var integer
+	 */
+	public $acroFormId;
+
+	/**
+	 * @var int
+	 */
+	public $signatureMaxLen = 5000;
+
+	/**
+	 * @var array Array carrying information about the fonts that the system currently knows about
+	 * Used to ensure that a font is not loaded twice, among other things
+	 */
+	public $fonts = [];
+
+	/**
+	 * @var string The default font metrics file to use if no other font has been loaded.
+	 * The path to the directory containing the font metrics should be included
+	 */
+	public $defaultFont = './fonts/Helvetica.afm';
+
+	/**
+	 * @string A record of the current font
+	 */
+	public $currentFont = '';
+
+	/**
+	 * @var string The current base font
+	 */
+	public $currentBaseFont = '';
+
+	/**
+	 * @var integer The number of the current font within the font array
+	 */
+	public $currentFontNum = 0;
+
+	/**
+	 * @var integer
+	 */
+	public $currentNode;
+
+	/**
+	 * @var integer Object number of the current page
+	 */
+	public $currentPage;
+
+	/**
+	 * @var integer Object number of the currently active contents block
+	 */
+	public $currentContents;
+
+	/**
+	 * @var integer Number of fonts within the system
+	 */
+	public $numFonts = 0;
+
+	/**
+	 * @var integer Number of graphic state resources used
+	 */
+	private $numStates = 0;
+
+	/**
+	 * @var array Number of graphic state resources used
+	 */
+	private $gstates = [];
+
+	/**
+	 * @var array Current color for fill operations, defaults to inactive value,
+	 * all three components should be between 0 and 1 inclusive when active
+	 */
+	public $currentColor = null;
+
+	/**
+	 * @var array Current color for stroke operations (lines etc.)
+	 */
+	public $currentStrokeColor = null;
+
+	/**
+	 * @var string Fill rule (nonzero or evenodd)
+	 */
+	public $fillRule = "nonzero";
+
+	/**
+	 * @var string Current style that lines are drawn in
+	 */
+	public $currentLineStyle = '';
+
+	/**
+	 * @var array Current line transparency (partial graphics state)
+	 */
+	public $currentLineTransparency = ["mode" => "Normal", "opacity" => 1.0];
+
+	/**
+	 * array Current fill transparency (partial graphics state)
+	 */
+	public $currentFillTransparency = ["mode" => "Normal", "opacity" => 1.0];
+
+	/**
+	 * @var array An array which is used to save the state of the document, mainly the colors and styles
+	 * it is used to temporarily change to another state, then change back to what it was before
+	 */
+	public $stateStack = [];
+
+	/**
+	 * @var integer Number of elements within the state stack
+	 */
+	public $nStateStack = 0;
+
+	/**
+	 * @var integer Number of page objects within the document
+	 */
+	public $numPages = 0;
+
+	/**
+	 * @var array Object Id storage stack
+	 */
+	public $stack = [];
+
+	/**
+	 * @var integer Number of elements within the object Id storage stack
+	 */
+	public $nStack = 0;
+
+	/**
+	 * an array which contains information about the objects which are not firmly attached to pages
+	 * these have been added with the addObject function
+	 */
+	public $looseObjects = [];
+
+	/**
+	 * array contains information about how the loose objects are to be added to the document
+	 */
+	public $addLooseObjects = [];
+
+	/**
+	 * @var integer The objectId of the information object for the document
+	 * this contains authorship, title etc.
+	 */
+	public $infoObject = 0;
+
+	/**
+	 * @var integer Number of images being tracked within the document
+	 */
+	public $numImages = 0;
+
+	/**
+	 * @var array An array containing options about the document
+	 * it defaults to turning on the compression of the objects
+	 */
+	public $options = ['compression' => true];
+
+	/**
+	 * @var integer The objectId of the first page of the document
+	 */
+	public $firstPageId;
+
+	/**
+	 * @var integer The object Id of the procset object
+	 */
+	public $procsetObjectId;
+
+	/**
+	 * @var array Store the information about the relationship between font families
+	 * this used so that the code knows which font is the bold version of another font, etc.
+	 * the value of this array is initialised in the constructor function.
+	 */
+	public $fontFamilies = [];
+
+	/**
+	 * @var string Folder for php serialized formats of font metrics files.
+	 * If empty string, use same folder as original metrics files.
+	 * This can be passed in from class creator.
+	 * If this folder does not exist or is not writable, Cpdf will be **much** slower.
+	 * Because of potential trouble with php safe mode, folder cannot be created at runtime.
+	 */
+	public $fontcache = '';
+
+	/**
+	 * @var integer The version of the font metrics cache file.
+	 * This value must be manually incremented whenever the internal font data structure is modified.
+	 */
+	public $fontcacheVersion = 6;
+
+	/**
+	 * @var string Temporary folder.
+	 * If empty string, will attempt system tmp folder.
+	 * This can be passed in from class creator.
+	 */
+	public $tmp = '';
+
+	/**
+	 * @var string Track if the current font is bolded or italicised
+	 */
+	public $currentTextState = '';
+
+	/**
+	 * @var string Messages are stored here during processing, these can be selected afterwards to give some useful debug information
+	 */
+	public $messages = '';
+
+	/**
+	 * @var string The encryption array for the document encryption is stored here
+	 */
+	public $arc4 = '';
+
+	/**
+	 * @var integer The object Id of the encryption information
+	 */
+	public $arc4_objnum = 0;
+
+	/**
+	 * @var string The file identifier, used to uniquely identify a pdf document
+	 */
+	public $fileIdentifier = '';
+
+	/**
+	 * @var boolean A flag to say if a document is to be encrypted or not
+	 */
+	public $encrypted = false;
+
+	/**
+	 * @var string The encryption key for the encryption of all the document content (structure is not encrypted)
+	 */
+	public $encryptionKey = '';
+
+	/**
+	 * @var array Array which forms a stack to keep track of nested callback functions
+	 */
+	public $callback = [];
+
+	/**
+	 * @var integer The number of callback functions in the callback array
+	 */
+	public $nCallback = 0;
+
+	/**
+	 * @var array Store label->id pairs for named destinations, these will be used to replace internal links
+	 * done this way so that destinations can be defined after the location that links to them
+	 */
+	public $destinations = [];
+
+	/**
+	 * @var array Store the stack for the transaction commands, each item in here is a record of the values of all the
+	 * publiciables within the class, so that the user can rollback at will (from each 'start' command)
+	 * note that this includes the objects array, so these can be large.
+	 */
+	public $checkpoint = '';
+
+	/**
+	 * @var array Table of Image origin filenames and image labels which were already added with o_image().
+	 * Allows to merge identical images
+	 */
+	public $imagelist = [];
+
+	/**
+	 * @var array Table of already added alpha and plain image files for transparent PNG images.
+	 */
+	protected $imageAlphaList = [];
+
+	/**
+	 * @var array List of temporary image files to be deleted after processing.
+	 */
+	protected $imageCache = [];
+
+	/**
+	 * @var boolean Whether the text passed in should be treated as Unicode or just local character set.
+	 */
+	public $isUnicode = false;
+
+	/**
+	 * @var string the JavaScript code of the document
+	 */
+	public $javascript = '';
+
+	/**
+	 * @var boolean whether the compression is possible
+	 */
+	protected $compressionReady = false;
+
+	/**
+	 * @var array Current page size
+	 */
+	protected $currentPageSize = ["width" => 0, "height" => 0];
+
+	/**
+	 * @var array All the chars that will be required in the font subsets
+	 */
+	protected $stringSubsets = [];
+
+	/**
+	 * @var string The target internal encoding
+	 */
+	protected static $targetEncoding = 'Windows-1252';
+
+	/**
+	 * @var array
+	 */
+	protected $byteRange = array();
+
+	/**
+	 * @var array The list of the core fonts
+	 */
+	protected static $coreFonts = [
+		'courier',
+		'courier-bold',
+		'courier-oblique',
+		'courier-boldoblique',
+		'helvetica',
+		'helvetica-bold',
+		'helvetica-oblique',
+		'helvetica-boldoblique',
+		'times-roman',
+		'times-bold',
+		'times-italic',
+		'times-bolditalic',
+		'symbol',
+		'zapfdingbats'
+	];
+
+	/**
+	 * Class constructor
+	 * This will start a new document
+	 *
+	 * @param array   $pageSize  Array of 4 numbers, defining the bottom left and upper right corner of the page. first two are normally zero.
+	 * @param boolean $isUnicode Whether text will be treated as Unicode or not.
+	 * @param string  $fontcache The font cache folder
+	 * @param string  $tmp       The temporary folder
+	 */
+	function __construct($pageSize = [0, 0, 612, 792], $isUnicode = false, $fontcache = '', $tmp = '')
+	{
+		$this->isUnicode = $isUnicode;
+		$this->fontcache = rtrim($fontcache, DIRECTORY_SEPARATOR."/\\");
+		$this->tmp = ($tmp !== '' ? $tmp : sys_get_temp_dir());
+		$this->newDocument($pageSize);
+
+		$this->compressionReady = function_exists('gzcompress');
+
+		if (in_array('Windows-1252', mb_list_encodings())) {
+			self::$targetEncoding = 'Windows-1252';
+		}
+
+		// also initialize the font families that are known about already
+		$this->setFontFamily('init');
+	}
+
+	public function __destruct()
+	{
+		foreach ($this->imageCache as $file) {
+			if (file_exists($file)) {
+				unlink($file);
+			}
+		}
+	}
+
+	/**
+	 * Document object methods (internal use only)
+	 *
+	 * There is about one object method for each type of object in the pdf document
+	 * Each function has the same call list ($id,$action,$options).
+	 * $id = the object ID of the object, or what it is to be if it is being created
+	 * $action = a string specifying the action to be performed, though ALL must support:
+	 *           'new' - create the object with the id $id
+	 *           'out' - produce the output for the pdf object
+	 * $options = optional, a string or array containing the various parameters for the object
+	 *
+	 * These, in conjunction with the output function are the ONLY way for output to be produced
+	 * within the pdf 'file'.
+	 */
+
+	/**
+	 * Destination object, used to specify the location for the user to jump to, presently on opening
+	 *
+	 * @param $id
+	 * @param $action
+	 * @param string $options
+	 * @return string|null
+	 */
+	protected function o_destination($id, $action, $options = '')
+	{
+		switch ($action) {
+			case 'new':
+				$this->objects[$id] = ['t' => 'destination', 'info' => []];
+				$tmp = '';
+				switch ($options['type']) {
+					case 'XYZ':
+					/** @noinspection PhpMissingBreakStatementInspection */
+					case 'FitR':
+						$tmp = ' ' . $options['p3'] . $tmp;
+					case 'FitH':
+					case 'FitV':
+					case 'FitBH':
+					/** @noinspection PhpMissingBreakStatementInspection */
+					case 'FitBV':
+						$tmp = ' ' . $options['p1'] . ' ' . $options['p2'] . $tmp;
+					case 'Fit':
+					case 'FitB':
+						$tmp = $options['type'] . $tmp;
+						$this->objects[$id]['info']['string'] = $tmp;
+						$this->objects[$id]['info']['page'] = $options['page'];
+				}
+				break;
+
+			case 'out':
+				$o = &$this->objects[$id];
+
+				$tmp = $o['info'];
+				$res = "\n$id 0 obj\n" . '[' . $tmp['page'] . ' 0 R /' . $tmp['string'] . "]\nendobj";
+
+				return $res;
+		}
+
+		return null;
+	}
+
+	/**
+	 * set the viewer preferences
+	 *
+	 * @param $id
+	 * @param $action
+	 * @param string|array $options
+	 * @return string|null
+	 */
+	protected function o_viewerPreferences($id, $action, $options = '')
+	{
+		switch ($action) {
+			case 'new':
+				$this->objects[$id] = ['t' => 'viewerPreferences', 'info' => []];
+				break;
+
+			case 'add':
+				$o = &$this->objects[$id];
+
+				foreach ($options as $k => $v) {
+					switch ($k) {
+						// Boolean keys
+						case 'HideToolbar':
+						case 'HideMenubar':
+						case 'HideWindowUI':
+						case 'FitWindow':
+						case 'CenterWindow':
+						case 'DisplayDocTitle':
+						case 'PickTrayByPDFSize':
+							$o['info'][$k] = (bool)$v;
+							break;
+
+						// Integer keys
+						case 'NumCopies':
+							$o['info'][$k] = (int)$v;
+							break;
+
+						// Name keys
+						case 'ViewArea':
+						case 'ViewClip':
+						case 'PrintClip':
+						case 'PrintArea':
+							$o['info'][$k] = (string)$v;
+							break;
+
+						// Named with limited valid values
+						case 'NonFullScreenPageMode':
+							if (!in_array($v, ['UseNone', 'UseOutlines', 'UseThumbs', 'UseOC'])) {
+								break;
+							}
+							$o['info'][$k] = $v;
+							break;
+
+						case 'Direction':
+							if (!in_array($v, ['L2R', 'R2L'])) {
+								break;
+							}
+							$o['info'][$k] = $v;
+							break;
+
+						case 'PrintScaling':
+							if (!in_array($v, ['None', 'AppDefault'])) {
+								break;
+							}
+							$o['info'][$k] = $v;
+							break;
+
+						case 'Duplex':
+							if (!in_array($v, ['None', 'Simplex', 'DuplexFlipShortEdge', 'DuplexFlipLongEdge'])) {
+								break;
+							}
+							$o['info'][$k] = $v;
+							break;
+
+						// Integer array
+						case 'PrintPageRange':
+							// Cast to integer array
+							foreach ($v as $vK => $vV) {
+								$v[$vK] = (int)$vV;
+							}
+							$o['info'][$k] = array_values($v);
+							break;
+					}
+				}
+				break;
+
+			case 'out':
+				$o = &$this->objects[$id];
+				$res = "\n$id 0 obj\n<< ";
+
+				foreach ($o['info'] as $k => $v) {
+					if (is_string($v)) {
+						$v = '/' . $v;
+					} elseif (is_int($v)) {
+						$v = (string) $v;
+					} elseif (is_bool($v)) {
+						$v = ($v ? 'true' : 'false');
+					} elseif (is_array($v)) {
+						$v = '[' . implode(' ', $v) . ']';
+					}
+					$res .= "\n/$k $v";
+				}
+				$res .= "\n>>\nendobj";
+
+				return $res;
+		}
+
+		return null;
+	}
+
+	/**
+	 * define the document catalog, the overall controller for the document
+	 *
+	 * @param $id
+	 * @param $action
+	 * @param string|array $options
+	 * @return string|null
+	 */
+	protected function o_catalog($id, $action, $options = '')
+	{
+		if ($action !== 'new') {
+			$o = &$this->objects[$id];
+		}
+
+		switch ($action) {
+			case 'new':
+				$this->objects[$id] = ['t' => 'catalog', 'info' => []];
+				$this->catalogId = $id;
+				break;
+
+			case 'acroform':
+			case 'outlines':
+			case 'pages':
+			case 'openHere':
+			case 'names':
+				$o['info'][$action] = $options;
+				break;
+
+			case 'viewerPreferences':
+				if (!isset($o['info']['viewerPreferences'])) {
+					$this->numObj++;
+					$this->o_viewerPreferences($this->numObj, 'new');
+					$o['info']['viewerPreferences'] = $this->numObj;
+				}
+
+				$vp = $o['info']['viewerPreferences'];
+				$this->o_viewerPreferences($vp, 'add', $options);
+
+				break;
+
+			case 'out':
+				$res = "\n$id 0 obj\n<< /Type /Catalog";
+
+				foreach ($o['info'] as $k => $v) {
+					switch ($k) {
+						case 'outlines':
+							$res .= "\n/Outlines $v 0 R";
+							break;
+
+						case 'pages':
+							$res .= "\n/Pages $v 0 R";
+							break;
+
+						case 'viewerPreferences':
+							$res .= "\n/ViewerPreferences $v 0 R";
+							break;
+
+						case 'openHere':
+							$res .= "\n/OpenAction $v 0 R";
+							break;
+
+						case 'names':
+							$res .= "\n/Names $v 0 R";
+							break;
+
+						case 'acroform':
+							$res .= "\n/AcroForm $v 0 R";
+							break;
+					}
+				}
+
+				$res .= " >>\nendobj";
+
+				return $res;
+		}
+
+		return null;
+	}
+
+	/**
+	 * object which is a parent to the pages in the document
+	 *
+	 * @param $id
+	 * @param $action
+	 * @param string $options
+	 * @return string|null
+	 */
+	protected function o_pages($id, $action, $options = '')
+	{
+		if ($action !== 'new') {
+			$o = &$this->objects[$id];
+		}
+
+		switch ($action) {
+			case 'new':
+				$this->objects[$id] = ['t' => 'pages', 'info' => []];
+				$this->o_catalog($this->catalogId, 'pages', $id);
+				break;
+
+			case 'page':
+				if (!is_array($options)) {
+					// then it will just be the id of the new page
+					$o['info']['pages'][] = $options;
+				} else {
+					// then it should be an array having 'id','rid','pos', where rid=the page to which this one will be placed relative
+					// and pos is either 'before' or 'after', saying where this page will fit.
+					if (isset($options['id']) && isset($options['rid']) && isset($options['pos'])) {
+						$i = array_search($options['rid'], $o['info']['pages']);
+						if (isset($o['info']['pages'][$i]) && $o['info']['pages'][$i] == $options['rid']) {
+
+							// then there is a match
+							// make a space
+							switch ($options['pos']) {
+								case 'before':
+									$k = $i;
+									break;
+
+								case 'after':
+									$k = $i + 1;
+									break;
+
+								default:
+									$k = -1;
+									break;
+							}
+
+							if ($k >= 0) {
+								for ($j = count($o['info']['pages']) - 1; $j >= $k; $j--) {
+									$o['info']['pages'][$j + 1] = $o['info']['pages'][$j];
+								}
+
+								$o['info']['pages'][$k] = $options['id'];
+							}
+						}
+					}
+				}
+				break;
+
+			case 'procset':
+				$o['info']['procset'] = $options;
+				break;
+
+			case 'mediaBox':
+				$o['info']['mediaBox'] = $options;
+				// which should be an array of 4 numbers
+				$this->currentPageSize = ['width' => $options[2], 'height' => $options[3]];
+				break;
+
+			case 'font':
+				$o['info']['fonts'][] = ['objNum' => $options['objNum'], 'fontNum' => $options['fontNum']];
+				break;
+
+			case 'extGState':
+				$o['info']['extGStates'][] = ['objNum' => $options['objNum'], 'stateNum' => $options['stateNum']];
+				break;
+
+			case 'xObject':
+				$o['info']['xObjects'][] = ['objNum' => $options['objNum'], 'label' => $options['label']];
+				break;
+
+			case 'out':
+				if (count($o['info']['pages'])) {
+					$res = "\n$id 0 obj\n<< /Type /Pages\n/Kids [";
+					foreach ($o['info']['pages'] as $v) {
+						$res .= "$v 0 R\n";
+					}
+
+					$res .= "]\n/Count " . count($this->objects[$id]['info']['pages']);
+
+					if ((isset($o['info']['fonts']) && count($o['info']['fonts'])) ||
+						isset($o['info']['procset']) ||
+						(isset($o['info']['extGStates']) && count($o['info']['extGStates']))
+					) {
+						$res .= "\n/Resources <<";
+
+						if (isset($o['info']['procset'])) {
+							$res .= "\n/ProcSet " . $o['info']['procset'] . " 0 R";
+						}
+
+						if (isset($o['info']['fonts']) && count($o['info']['fonts'])) {
+							$res .= "\n/Font << ";
+							foreach ($o['info']['fonts'] as $finfo) {
+								$res .= "\n/F" . $finfo['fontNum'] . " " . $finfo['objNum'] . " 0 R";
+							}
+							$res .= "\n>>";
+						}
+
+						if (isset($o['info']['xObjects']) && count($o['info']['xObjects'])) {
+							$res .= "\n/XObject << ";
+							foreach ($o['info']['xObjects'] as $finfo) {
+								$res .= "\n/" . $finfo['label'] . " " . $finfo['objNum'] . " 0 R";
+							}
+							$res .= "\n>>";
+						}
+
+						if (isset($o['info']['extGStates']) && count($o['info']['extGStates'])) {
+							$res .= "\n/ExtGState << ";
+							foreach ($o['info']['extGStates'] as $gstate) {
+								$res .= "\n/GS" . $gstate['stateNum'] . " " . $gstate['objNum'] . " 0 R";
+							}
+							$res .= "\n>>";
+						}
+
+						$res .= "\n>>";
+						if (isset($o['info']['mediaBox'])) {
+							$tmp = $o['info']['mediaBox'];
+							$res .= "\n/MediaBox [" . sprintf(
+									'%.3F %.3F %.3F %.3F',
+									$tmp[0],
+									$tmp[1],
+									$tmp[2],
+									$tmp[3]
+								) . ']';
+						}
+					}
+
+					$res .= "\n >>\nendobj";
+				} else {
+					$res = "\n$id 0 obj\n<< /Type /Pages\n/Count 0\n>>\nendobj";
+				}
+
+				return $res;
+		}
+
+		return null;
+	}
+
+	/**
+	 * define the outlines in the doc, empty for now
+	 *
+	 * @param $id
+	 * @param $action
+	 * @param string $options
+	 * @return string|null
+	 */
+	protected function o_outlines($id, $action, $options = '')
+	{
+		if ($action !== 'new') {
+			$o = &$this->objects[$id];
+		}
+
+		switch ($action) {
+			case 'new':
+				$this->objects[$id] = ['t' => 'outlines', 'info' => ['outlines' => []]];
+				$this->o_catalog($this->catalogId, 'outlines', $id);
+				break;
+
+			case 'outline':
+				$o['info']['outlines'][] = $options;
+				break;
+
+			case 'out':
+				if (count($o['info']['outlines'])) {
+					$res = "\n$id 0 obj\n<< /Type /Outlines /Kids [";
+					foreach ($o['info']['outlines'] as $v) {
+						$res .= "$v 0 R ";
+					}
+
+					$res .= "] /Count " . count($o['info']['outlines']) . " >>\nendobj";
+				} else {
+					$res = "\n$id 0 obj\n<< /Type /Outlines /Count 0 >>\nendobj";
+				}
+
+				return $res;
+		}
+
+		return null;
+	}
+
+	/**
+	 * an object to hold the font description
+	 *
+	 * @param $id
+	 * @param $action
+	 * @param string|array $options
+	 * @return string|null
+	 * @throws FontNotFoundException
+	 */
+	protected function o_font($id, $action, $options = '')
+	{
+		if ($action !== 'new') {
+			$o = &$this->objects[$id];
+		}
+
+		switch ($action) {
+			case 'new':
+				$this->objects[$id] = [
+					't'    => 'font',
+					'info' => [
+						'name'         => $options['name'],
+						'fontFileName' => $options['fontFileName'],
+						'SubType'      => 'Type1',
+						'isSubsetting'   => $options['isSubsetting']
+					]
+				];
+				$fontNum = $this->numFonts;
+				$this->objects[$id]['info']['fontNum'] = $fontNum;
+
+				// deal with the encoding and the differences
+				if (isset($options['differences'])) {
+					// then we'll need an encoding dictionary
+					$this->numObj++;
+					$this->o_fontEncoding($this->numObj, 'new', $options);
+					$this->objects[$id]['info']['encodingDictionary'] = $this->numObj;
+				} else {
+					if (isset($options['encoding'])) {
+						// we can specify encoding here
+						switch ($options['encoding']) {
+							case 'WinAnsiEncoding':
+							case 'MacRomanEncoding':
+							case 'MacExpertEncoding':
+								$this->objects[$id]['info']['encoding'] = $options['encoding'];
+								break;
+
+							case 'none':
+								break;
+
+							default:
+								$this->objects[$id]['info']['encoding'] = 'WinAnsiEncoding';
+								break;
+						}
+					} else {
+						$this->objects[$id]['info']['encoding'] = 'WinAnsiEncoding';
+					}
+				}
+
+				if ($this->fonts[$options['fontFileName']]['isUnicode']) {
+					// For Unicode fonts, we need to incorporate font data into
+					// sub-sections that are linked from the primary font section.
+					// Look at o_fontGIDtoCID and o_fontDescendentCID functions
+					// for more information.
+					//
+					// All of this code is adapted from the excellent changes made to
+					// transform FPDF to TCPDF (http://tcpdf.sourceforge.net/)
+
+					$toUnicodeId = ++$this->numObj;
+					$this->o_toUnicode($toUnicodeId, 'new');
+					$this->objects[$id]['info']['toUnicode'] = $toUnicodeId;
+
+					$cidFontId = ++$this->numObj;
+					$this->o_fontDescendentCID($cidFontId, 'new', $options);
+					$this->objects[$id]['info']['cidFont'] = $cidFontId;
+				}
+
+				// also tell the pages node about the new font
+				$this->o_pages($this->currentNode, 'font', ['fontNum' => $fontNum, 'objNum' => $id]);
+				break;
+
+			case 'add':
+				$font_options = $this->processFont($id, $o['info']);
+
+				if ($font_options !== false) {
+					foreach ($font_options as $k => $v) {
+						switch ($k) {
+							case 'BaseFont':
+								$o['info']['name'] = $v;
+								break;
+							case 'FirstChar':
+							case 'LastChar':
+							case 'Widths':
+							case 'FontDescriptor':
+							case 'SubType':
+								$this->addMessage('o_font ' . $k . " : " . $v);
+								$o['info'][$k] = $v;
+								break;
+						}
+					}
+
+					// pass values down to descendent font
+					if (isset($o['info']['cidFont'])) {
+						$this->o_fontDescendentCID($o['info']['cidFont'], 'add', $font_options);
+					}
+				}
+				break;
+
+			case 'out':
+				if ($this->fonts[$this->objects[$id]['info']['fontFileName']]['isUnicode']) {
+					// For Unicode fonts, we need to incorporate font data into
+					// sub-sections that are linked from the primary font section.
+					// Look at o_fontGIDtoCID and o_fontDescendentCID functions
+					// for more information.
+					//
+					// All of this code is adapted from the excellent changes made to
+					// transform FPDF to TCPDF (http://tcpdf.sourceforge.net/)
+
+					$res = "\n$id 0 obj\n<</Type /Font\n/Subtype /Type0\n";
+					$res .= "/BaseFont /" . $o['info']['name'] . "\n";
+
+					// The horizontal identity mapping for 2-byte CIDs; may be used
+					// with CIDFonts using any Registry, Ordering, and Supplement values.
+					$res .= "/Encoding /Identity-H\n";
+					$res .= "/DescendantFonts [" . $o['info']['cidFont'] . " 0 R]\n";
+					$res .= "/ToUnicode " . $o['info']['toUnicode'] . " 0 R\n";
+					$res .= ">>\n";
+					$res .= "endobj";
+				} else {
+					$res = "\n$id 0 obj\n<< /Type /Font\n/Subtype /" . $o['info']['SubType'] . "\n";
+					$res .= "/Name /F" . $o['info']['fontNum'] . "\n";
+					$res .= "/BaseFont /" . $o['info']['name'] . "\n";
+
+					if (isset($o['info']['encodingDictionary'])) {
+						// then place a reference to the dictionary
+						$res .= "/Encoding " . $o['info']['encodingDictionary'] . " 0 R\n";
+					} else {
+						if (isset($o['info']['encoding'])) {
+							// use the specified encoding
+							$res .= "/Encoding /" . $o['info']['encoding'] . "\n";
+						}
+					}
+
+					if (isset($o['info']['FirstChar'])) {
+						$res .= "/FirstChar " . $o['info']['FirstChar'] . "\n";
+					}
+
+					if (isset($o['info']['LastChar'])) {
+						$res .= "/LastChar " . $o['info']['LastChar'] . "\n";
+					}
+
+					if (isset($o['info']['Widths'])) {
+						$res .= "/Widths " . $o['info']['Widths'] . " 0 R\n";
+					}
+
+					if (isset($o['info']['FontDescriptor'])) {
+						$res .= "/FontDescriptor " . $o['info']['FontDescriptor'] . " 0 R\n";
+					}
+
+					$res .= ">>\n";
+					$res .= "endobj";
+				}
+
+				return $res;
+		}
+
+		return null;
+	}
+
+	protected function getFontSubsettingTag(array $font): string
+	{
+		// convert font num to hexavigesimal numeral system letters A - Z only
+		$base_26 = strtoupper(base_convert($font['fontNum'], 10, 26));
+		for ($i = 0; $i < strlen($base_26); $i++) {
+			$char = $base_26[$i];
+			if ($char <= "9") {
+				$base_26[$i] = chr(65 + intval($char));
+			} else {
+				$base_26[$i] = chr(ord($char) + 10);
+			}
+		}
+
+		return 'SUB' . str_pad($base_26, 3, 'A', STR_PAD_LEFT);
+	}
+
+	/**
+	 * @param int $fontObjId
+	 * @param array $object_info
+	 * @return array|false
+	 * @throws FontNotFoundException
+	 */
+	private function processFont(int $fontObjId, array $object_info)
+	{
+		$fontFileName = $object_info['fontFileName'];
+		if (!isset($this->fonts[$fontFileName])) {
+			return false;
+		}
+
+		$font = &$this->fonts[$fontFileName];
+
+		$fileSuffix = $font['fileSuffix'];
+		$fileSuffixLower = strtolower($font['fileSuffix']);
+		$fbfile = "$fontFileName.$fileSuffix";
+		$isTtfFont = $fileSuffixLower === 'ttf';
+		$isPfbFont = $fileSuffixLower === 'pfb';
+
+		$this->addMessage('selectFont: checking for - ' . $fbfile);
+
+		if (!$fileSuffix) {
+			$this->addMessage(
+				'selectFont: pfb or ttf file not found, ok if this is one of the 14 standard fonts'
+			);
+
+			return false;
+		} else {
+			$adobeFontName = isset($font['PostScriptName']) ? $font['PostScriptName'] : $font['FontName'];
+			//        $fontObj = $this->numObj;
+			$this->addMessage("selectFont: adding font file - $fbfile - $adobeFontName");
+
+			// find the array of font widths, and put that into an object.
+			$firstChar = -1;
+			$lastChar = 0;
+			$widths = [];
+			$cid_widths = [];
+
+			foreach ($font['C'] as $num => $d) {
+				if (intval($num) > 0 || $num == '0') {
+					if (!$font['isUnicode']) {
+						// With Unicode, widths array isn't used
+						if ($lastChar > 0 && $num > $lastChar + 1) {
+							for ($i = $lastChar + 1; $i < $num; $i++) {
+								$widths[] = 0;
+							}
+						}
+					}
+
+					$widths[] = $d;
+
+					if ($font['isUnicode']) {
+						$cid_widths[$num] = $d;
+					}
+
+					if ($firstChar == -1) {
+						$firstChar = $num;
+					}
+
+					$lastChar = $num;
+				}
+			}
+
+			// also need to adjust the widths for the differences array
+			if (isset($object['differences'])) {
+				foreach ($object['differences'] as $charNum => $charName) {
+					if ($charNum > $lastChar) {
+						if (!$object['isUnicode']) {
+							// With Unicode, widths array isn't used
+							for ($i = $lastChar + 1; $i <= $charNum; $i++) {
+								$widths[] = 0;
+							}
+						}
+
+						$lastChar = $charNum;
+					}
+
+					if (isset($font['C'][$charName])) {
+						$widths[$charNum - $firstChar] = $font['C'][$charName];
+						if ($font['isUnicode']) {
+							$cid_widths[$charName] = $font['C'][$charName];
+						}
+					}
+				}
+			}
+
+			if ($font['isUnicode']) {
+				$font['CIDWidths'] = $cid_widths;
+			}
+
+			$this->addMessage('selectFont: FirstChar = ' . $firstChar);
+			$this->addMessage('selectFont: LastChar = ' . $lastChar);
+
+			$widthid = -1;
+
+			if (!$font['isUnicode']) {
+				// With Unicode, widths array isn't used
+
+				$this->numObj++;
+				$this->o_contents($this->numObj, 'new', 'raw');
+				$this->objects[$this->numObj]['c'] .= '[' . implode(' ', $widths) . ']';
+				$widthid = $this->numObj;
+			}
+
+			$missing_width = 500;
+			$stemV = 70;
+
+			if (isset($font['MissingWidth'])) {
+				$missing_width = $font['MissingWidth'];
+			}
+			if (isset($font['StdVW'])) {
+				$stemV = $font['StdVW'];
+			} else {
+				if (isset($font['Weight']) && preg_match('!(bold|black)!i', $font['Weight'])) {
+					$stemV = 120;
+				}
+			}
+
+			// load the pfb file, and put that into an object too.
+			// note that pdf supports only binary format type 1 font files, though there is a
+			// simple utility to convert them from pfa to pfb.
+			$data = file_get_contents($fbfile);
+
+			// create the font descriptor
+			$this->numObj++;
+			$fontDescriptorId = $this->numObj;
+
+			$this->numObj++;
+			$pfbid = $this->numObj;
+
+			// determine flags (more than a little flakey, hopefully will not matter much)
+			$flags = 0;
+
+			if ($font['ItalicAngle'] != 0) {
+				$flags += pow(2, 6);
+			}
+
+			if ($font['IsFixedPitch'] === 'true') {
+				$flags += 1;
+			}
+
+			$flags += pow(2, 5); // assume non-sybolic
+			$list = [
+				'Ascent'       => 'Ascender',
+				'CapHeight'    => 'Ascender', //FIXME: php-font-lib is not grabbing this value, so we'll fake it and use the Ascender value // 'CapHeight'
+				'MissingWidth' => 'MissingWidth',
+				'Descent'      => 'Descender',
+				'FontBBox'     => 'FontBBox',
+				'ItalicAngle'  => 'ItalicAngle'
+			];
+			$fdopt = [
+				'Flags'    => $flags,
+				'FontName' => $adobeFontName,
+				'StemV'    => $stemV
+			];
+
+			foreach ($list as $k => $v) {
+				if (isset($font[$v])) {
+					$fdopt[$k] = $font[$v];
+				}
+			}
+
+			if ($isPfbFont) {
+				$fdopt['FontFile'] = $pfbid;
+			} elseif ($isTtfFont) {
+				$fdopt['FontFile2'] = $pfbid;
+			}
+
+			$this->o_fontDescriptor($fontDescriptorId, 'new', $fdopt);
+
+			// embed the font program
+			$this->o_contents($this->numObj, 'new');
+			$this->objects[$pfbid]['c'] .= $data;
+
+			// determine the cruicial lengths within this file
+			if ($isPfbFont) {
+				$l1 = strpos($data, 'eexec') + 6;
+				$l2 = strpos($data, '00000000') - $l1;
+				$l3 = mb_strlen($data, '8bit') - $l2 - $l1;
+				$this->o_contents(
+					$this->numObj,
+					'add',
+					['Length1' => $l1, 'Length2' => $l2, 'Length3' => $l3]
+				);
+			} elseif ($isTtfFont) {
+				$l1 = mb_strlen($data, '8bit');
+				$this->o_contents($this->numObj, 'add', ['Length1' => $l1]);
+			}
+
+			// tell the font object about all this new stuff
+			$options = [
+				'BaseFont'       => $adobeFontName,
+				'MissingWidth'   => $missing_width,
+				'Widths'         => $widthid,
+				'FirstChar'      => $firstChar,
+				'LastChar'       => $lastChar,
+				'FontDescriptor' => $fontDescriptorId
+			];
+
+			if ($isTtfFont) {
+				$options['SubType'] = 'TrueType';
+			}
+
+			$this->addMessage("adding extra info to font.($fontObjId)");
+
+			foreach ($options as $fk => $fv) {
+				$this->addMessage("$fk : $fv");
+			}
+		}
+
+		return $options;
+	}
+
+	/**
+	 * A toUnicode section, needed for unicode fonts
+	 *
+	 * @param $id
+	 * @param $action
+	 * @return null|string
+	 */
+	protected function o_toUnicode($id, $action)
+	{
+		switch ($action) {
+			case 'new':
+				$this->objects[$id] = [
+					't'    => 'toUnicode'
+				];
+				break;
+			case 'add':
+				break;
+			case 'out':
+				$ordering = 'UCS';
+				$registry = 'Adobe';
+
+				if ($this->encrypted) {
+					$this->encryptInit($id);
+					$ordering = $this->ARC4($ordering);
+					$registry = $this->filterText($this->ARC4($registry), false, false);
+				}
+
+				$stream = <<<EOT
 /CIDInit /ProcSet findresource begin
 12 dict begin
 begincmap
@@ -1312,5108 +1312,5108 @@ 
 end
 EOT;
 
-                $res = "\n$id 0 obj\n";
-                $res .= "<</Length " . mb_strlen($stream, '8bit') . " >>\n";
-                $res .= "stream\n" . $stream . "\nendstream" . "\nendobj";
-
-                return $res;
-        }
-
-        return null;
-    }
-
-    /**
-     * a font descriptor, needed for including additional fonts
-     *
-     * @param $id
-     * @param $action
-     * @param string $options
-     * @return null|string
-     */
-    protected function o_fontDescriptor($id, $action, $options = '')
-    {
-        if ($action !== 'new') {
-            $o = &$this->objects[$id];
-        }
-
-        switch ($action) {
-            case 'new':
-                $this->objects[$id] = ['t' => 'fontDescriptor', 'info' => $options];
-                break;
-
-            case 'out':
-                $res = "\n$id 0 obj\n<< /Type /FontDescriptor\n";
-                foreach ($o['info'] as $label => $value) {
-                    switch ($label) {
-                        case 'Ascent':
-                        case 'CapHeight':
-                        case 'Descent':
-                        case 'Flags':
-                        case 'ItalicAngle':
-                        case 'StemV':
-                        case 'AvgWidth':
-                        case 'Leading':
-                        case 'MaxWidth':
-                        case 'MissingWidth':
-                        case 'StemH':
-                        case 'XHeight':
-                        case 'CharSet':
-                            if (mb_strlen($value, '8bit')) {
-                                $res .= "/$label $value\n";
-                            }
-
-                            break;
-                        case 'FontFile':
-                        case 'FontFile2':
-                        case 'FontFile3':
-                            $res .= "/$label $value 0 R\n";
-                            break;
-
-                        case 'FontBBox':
-                            $res .= "/$label [$value[0] $value[1] $value[2] $value[3]]\n";
-                            break;
-
-                        case 'FontName':
-                            $res .= "/$label /$value\n";
-                            break;
-                    }
-                }
-
-                $res .= ">>\nendobj";
-
-                return $res;
-        }
-
-        return null;
-    }
-
-    /**
-     * the font encoding
-     *
-     * @param $id
-     * @param $action
-     * @param string $options
-     * @return null|string
-     */
-    protected function o_fontEncoding($id, $action, $options = '')
-    {
-        if ($action !== 'new') {
-            $o = &$this->objects[$id];
-        }
-
-        switch ($action) {
-            case 'new':
-                // the options array should contain 'differences' and maybe 'encoding'
-                $this->objects[$id] = ['t' => 'fontEncoding', 'info' => $options];
-                break;
-
-            case 'out':
-                $res = "\n$id 0 obj\n<< /Type /Encoding\n";
-                if (!isset($o['info']['encoding'])) {
-                    $o['info']['encoding'] = 'WinAnsiEncoding';
-                }
-
-                if ($o['info']['encoding'] !== 'none') {
-                    $res .= "/BaseEncoding /" . $o['info']['encoding'] . "\n";
-                }
-
-                $res .= "/Differences \n[";
-
-                $onum = -100;
-
-                foreach ($o['info']['differences'] as $num => $label) {
-                    if ($num != $onum + 1) {
-                        // we cannot make use of consecutive numbering
-                        $res .= "\n$num /$label";
-                    } else {
-                        $res .= " /$label";
-                    }
-
-                    $onum = $num;
-                }
-
-                $res .= "\n]\n>>\nendobj";
-
-                return $res;
-        }
-
-        return null;
-    }
-
-    /**
-     * a descendent cid font, needed for unicode fonts
-     *
-     * @param $id
-     * @param $action
-     * @param string|array $options
-     * @return null|string
-     */
-    protected function o_fontDescendentCID($id, $action, $options = '')
-    {
-        if ($action !== 'new') {
-            $o = &$this->objects[$id];
-        }
-
-        switch ($action) {
-            case 'new':
-                $this->objects[$id] = ['t' => 'fontDescendentCID', 'info' => $options];
-
-                // we need a CID system info section
-                $cidSystemInfoId = ++$this->numObj;
-                $this->o_cidSystemInfo($cidSystemInfoId, 'new');
-                $this->objects[$id]['info']['cidSystemInfo'] = $cidSystemInfoId;
-
-                // and a CID to GID map
-                $cidToGidMapId = ++$this->numObj;
-                $this->o_fontGIDtoCIDMap($cidToGidMapId, 'new', $options);
-                $this->objects[$id]['info']['cidToGidMap'] = $cidToGidMapId;
-                break;
-
-            case 'add':
-                foreach ($options as $k => $v) {
-                    switch ($k) {
-                        case 'BaseFont':
-                            $o['info']['name'] = $v;
-                            break;
-
-                        case 'FirstChar':
-                        case 'LastChar':
-                        case 'MissingWidth':
-                        case 'FontDescriptor':
-                        case 'SubType':
-                            $this->addMessage("o_fontDescendentCID $k : $v");
-                            $o['info'][$k] = $v;
-                            break;
-                    }
-                }
-
-                // pass values down to cid to gid map
-                $this->o_fontGIDtoCIDMap($o['info']['cidToGidMap'], 'add', $options);
-                break;
-
-            case 'out':
-                $res = "\n$id 0 obj\n";
-                $res .= "<</Type /Font\n";
-                $res .= "/Subtype /CIDFontType2\n";
-                $res .= "/BaseFont /" . $o['info']['name'] . "\n";
-                $res .= "/CIDSystemInfo " . $o['info']['cidSystemInfo'] . " 0 R\n";
-                //      if (isset($o['info']['FirstChar'])) {
-                //        $res.= "/FirstChar ".$o['info']['FirstChar']."\n";
-                //      }
-
-                //      if (isset($o['info']['LastChar'])) {
-                //        $res.= "/LastChar ".$o['info']['LastChar']."\n";
-                //      }
-                if (isset($o['info']['FontDescriptor'])) {
-                    $res .= "/FontDescriptor " . $o['info']['FontDescriptor'] . " 0 R\n";
-                }
-
-                if (isset($o['info']['MissingWidth'])) {
-                    $res .= "/DW " . $o['info']['MissingWidth'] . "\n";
-                }
-
-                if (isset($o['info']['fontFileName']) && isset($this->fonts[$o['info']['fontFileName']]['CIDWidths'])) {
-                    $cid_widths = &$this->fonts[$o['info']['fontFileName']]['CIDWidths'];
-                    $w = '';
-                    foreach ($cid_widths as $cid => $width) {
-                        $w .= "$cid [$width] ";
-                    }
-                    $res .= "/W [$w]\n";
-                }
-
-                $res .= "/CIDToGIDMap " . $o['info']['cidToGidMap'] . " 0 R\n";
-                $res .= ">>\n";
-                $res .= "endobj";
-
-                return $res;
-        }
-
-        return null;
-    }
-
-    /**
-     * CID system info section, needed for unicode fonts
-     *
-     * @param $id
-     * @param $action
-     * @return null|string
-     */
-    protected function o_cidSystemInfo($id, $action)
-    {
-        switch ($action) {
-            case 'new':
-                $this->objects[$id] = [
-                    't' => 'cidSystemInfo'
-                ];
-                break;
-            case 'add':
-                break;
-            case 'out':
-                $ordering = 'UCS';
-                $registry = 'Adobe';
-
-                if ($this->encrypted) {
-                    $this->encryptInit($id);
-                    $ordering = $this->ARC4($ordering);
-                    $registry = $this->ARC4($registry);
-                }
-
-
-                $res = "\n$id 0 obj\n";
-
-                $res .= '<</Registry (' . $registry . ")\n"; // A string identifying an issuer of character collections
-                $res .= '/Ordering (' . $ordering . ")\n"; // A string that uniquely names a character collection issued by a specific registry
-                $res .= "/Supplement 0\n"; // The supplement number of the character collection.
-                $res .= ">>";
-
-                $res .= "\nendobj";
-
-                return $res;
-        }
-
-        return null;
-    }
-
-    /**
-     * a font glyph to character map, needed for unicode fonts
-     *
-     * @param $id
-     * @param $action
-     * @param string $options
-     * @return null|string
-     */
-    protected function o_fontGIDtoCIDMap($id, $action, $options = '')
-    {
-        if ($action !== 'new') {
-            $o = &$this->objects[$id];
-        }
-
-        switch ($action) {
-            case 'new':
-                $this->objects[$id] = ['t' => 'fontGIDtoCIDMap', 'info' => $options];
-                break;
-
-            case 'out':
-                $res = "\n$id 0 obj\n";
-                $fontFileName = $o['info']['fontFileName'];
-                $tmp = $this->fonts[$fontFileName]['CIDtoGID'] = base64_decode($this->fonts[$fontFileName]['CIDtoGID']);
-
-                $compressed = isset($this->fonts[$fontFileName]['CIDtoGID_Compressed']) &&
-                    $this->fonts[$fontFileName]['CIDtoGID_Compressed'];
-
-                if (!$compressed && isset($o['raw'])) {
-                    $res .= $tmp;
-                } else {
-                    $res .= "<<";
-
-                    if (!$compressed && $this->compressionReady && $this->options['compression']) {
-                        // then implement ZLIB based compression on this content stream
-                        $compressed = true;
-                        $tmp = gzcompress($tmp, 6);
-                    }
-                    if ($compressed) {
-                        $res .= "\n/Filter /FlateDecode";
-                    }
-
-                    if ($this->encrypted) {
-                        $this->encryptInit($id);
-                        $tmp = $this->ARC4($tmp);
-                    }
-
-                    $res .= "\n/Length " . mb_strlen($tmp, '8bit') . ">>\nstream\n$tmp\nendstream";
-                }
-
-                $res .= "\nendobj";
-
-                return $res;
-        }
-
-        return null;
-    }
-
-    /**
-     * the document procset, solves some problems with printing to old PS printers
-     *
-     * @param $id
-     * @param $action
-     * @param string $options
-     * @return null|string
-     */
-    protected function o_procset($id, $action, $options = '')
-    {
-        if ($action !== 'new') {
-            $o = &$this->objects[$id];
-        }
-
-        switch ($action) {
-            case 'new':
-                $this->objects[$id] = ['t' => 'procset', 'info' => ['PDF' => 1, 'Text' => 1]];
-                $this->o_pages($this->currentNode, 'procset', $id);
-                $this->procsetObjectId = $id;
-                break;
-
-            case 'add':
-                // this is to add new items to the procset list, despite the fact that this is considered
-                // obsolete, the items are required for printing to some postscript printers
-                switch ($options) {
-                    case 'ImageB':
-                    case 'ImageC':
-                    case 'ImageI':
-                        $o['info'][$options] = 1;
-                        break;
-                }
-                break;
-
-            case 'out':
-                $res = "\n$id 0 obj\n[";
-                foreach ($o['info'] as $label => $val) {
-                    $res .= "/$label ";
-                }
-                $res .= "]\nendobj";
-
-                return $res;
-        }
-
-        return null;
-    }
-
-    /**
-     * define the document information
-     *
-     * @param $id
-     * @param $action
-     * @param string $options
-     * @return null|string
-     */
-    protected function o_info($id, $action, $options = '')
-    {
-        switch ($action) {
-            case 'new':
-                $this->infoObject = $id;
-                $date = 'D:' . @date('Ymd');
-                $this->objects[$id] = [
-                    't'    => 'info',
-                    'info' => [
-                        'Producer'      => 'CPDF (dompdf)',
-                        'CreationDate' => $date
-                    ]
-                ];
-                break;
-            case 'Title':
-            case 'Author':
-            case 'Subject':
-            case 'Keywords':
-            case 'Creator':
-            case 'Producer':
-            case 'CreationDate':
-            case 'ModDate':
-            case 'Trapped':
-                $this->objects[$id]['info'][$action] = $options;
-                break;
-
-            case 'out':
-                $encrypted = $this->encrypted;
-                if ($encrypted) {
-                    $this->encryptInit($id);
-                }
-
-                $res = "\n$id 0 obj\n<<\n";
-                $o = &$this->objects[$id];
-                foreach ($o['info'] as $k => $v) {
-                    $res .= "/$k (";
-
-                    // dates must be outputted as-is, without Unicode transformations
-                    if ($k !== 'CreationDate' && $k !== 'ModDate') {
-                        $v = $this->utf8toUtf16BE($v);
-                    }
-
-                    if ($encrypted) {
-                        $v = $this->ARC4($v);
-                    }
-
-                    $res .= $this->filterText($v, false, false);
-                    $res .= ")\n";
-                }
-
-                $res .= ">>\nendobj";
-
-                return $res;
-        }
-
-        return null;
-    }
-
-    /**
-     * an action object, used to link to URLS initially
-     *
-     * @param $id
-     * @param $action
-     * @param string $options
-     * @return null|string
-     */
-    protected function o_action($id, $action, $options = '')
-    {
-        if ($action !== 'new') {
-            $o = &$this->objects[$id];
-        }
-
-        switch ($action) {
-            case 'new':
-                if (is_array($options)) {
-                    $this->objects[$id] = ['t' => 'action', 'info' => $options, 'type' => $options['type']];
-                } else {
-                    // then assume a URI action
-                    $this->objects[$id] = ['t' => 'action', 'info' => $options, 'type' => 'URI'];
-                }
-                break;
-
-            case 'out':
-                if ($this->encrypted) {
-                    $this->encryptInit($id);
-                }
-
-                $res = "\n$id 0 obj\n<< /Type /Action";
-                switch ($o['type']) {
-                    case 'ilink':
-                        if (!isset($this->destinations[(string)$o['info']['label']])) {
-                            break;
-                        }
-
-                        // there will be an 'label' setting, this is the name of the destination
-                        $res .= "\n/S /GoTo\n/D " . $this->destinations[(string)$o['info']['label']] . " 0 R";
-                        break;
-
-                    case 'URI':
-                        $res .= "\n/S /URI\n/URI (";
-                        if ($this->encrypted) {
-                            $res .= $this->filterText($this->ARC4($o['info']), false, false);
-                        } else {
-                            $res .= $this->filterText($o['info'], false, false);
-                        }
-
-                        $res .= ")";
-                        break;
-                }
-
-                $res .= "\n>>\nendobj";
-
-                return $res;
-        }
-
-        return null;
-    }
-
-    /**
-     * an annotation object, this will add an annotation to the current page.
-     * initially will support just link annotations
-     *
-     * @param $id
-     * @param $action
-     * @param string $options
-     * @return null|string
-     */
-    protected function o_annotation($id, $action, $options = '')
-    {
-        if ($action !== 'new') {
-            $o = &$this->objects[$id];
-        }
-
-        switch ($action) {
-            case 'new':
-                // add the annotation to the current page
-                $pageId = $this->currentPage;
-                $this->o_page($pageId, 'annot', $id);
-
-                // and add the action object which is going to be required
-                switch ($options['type']) {
-                    case 'link':
-                        $this->objects[$id] = ['t' => 'annotation', 'info' => $options];
-                        $this->numObj++;
-                        $this->o_action($this->numObj, 'new', $options['url']);
-                        $this->objects[$id]['info']['actionId'] = $this->numObj;
-                        break;
-
-                    case 'ilink':
-                        // this is to a named internal link
-                        $label = $options['label'];
-                        $this->objects[$id] = ['t' => 'annotation', 'info' => $options];
-                        $this->numObj++;
-                        $this->o_action($this->numObj, 'new', ['type' => 'ilink', 'label' => $label]);
-                        $this->objects[$id]['info']['actionId'] = $this->numObj;
-                        break;
-                }
-                break;
-
-            case 'out':
-                $res = "\n$id 0 obj\n<< /Type /Annot";
-                switch ($o['info']['type']) {
-                    case 'link':
-                    case 'ilink':
-                        $res .= "\n/Subtype /Link";
-                        break;
-                }
-                $res .= "\n/A " . $o['info']['actionId'] . " 0 R";
-                $res .= "\n/Border [0 0 0]";
-                $res .= "\n/H /I";
-                $res .= "\n/Rect [ ";
-
-                foreach ($o['info']['rect'] as $v) {
-                    $res .= sprintf("%.4F ", $v);
-                }
-
-                $res .= "]";
-                $res .= "\n>>\nendobj";
-
-                return $res;
-        }
-
-        return null;
-    }
-
-    /**
-     * a page object, it also creates a contents object to hold its contents
-     *
-     * @param $id
-     * @param $action
-     * @param string $options
-     * @return null|string
-     */
-    protected function o_page($id, $action, $options = '')
-    {
-        if ($action !== 'new') {
-            $o = &$this->objects[$id];
-        }
-
-        switch ($action) {
-            case 'new':
-                $this->numPages++;
-                $this->objects[$id] = [
-                    't'    => 'page',
-                    'info' => [
-                        'parent'  => $this->currentNode,
-                        'pageNum' => $this->numPages,
-                        'mediaBox' => $this->objects[$this->currentNode]['info']['mediaBox']
-                    ]
-                ];
-
-                if (is_array($options)) {
-                    // then this must be a page insertion, array should contain 'rid','pos'=[before|after]
-                    $options['id'] = $id;
-                    $this->o_pages($this->currentNode, 'page', $options);
-                } else {
-                    $this->o_pages($this->currentNode, 'page', $id);
-                }
-
-                $this->currentPage = $id;
-                //make a contents object to go with this page
-                $this->numObj++;
-                $this->o_contents($this->numObj, 'new', $id);
-                $this->currentContents = $this->numObj;
-                $this->objects[$id]['info']['contents'] = [];
-                $this->objects[$id]['info']['contents'][] = $this->numObj;
-
-                $match = ($this->numPages % 2 ? 'odd' : 'even');
-                foreach ($this->addLooseObjects as $oId => $target) {
-                    if ($target === 'all' || $match === $target) {
-                        $this->objects[$id]['info']['contents'][] = $oId;
-                    }
-                }
-                break;
-
-            case 'content':
-                $o['info']['contents'][] = $options;
-                break;
-
-            case 'annot':
-                // add an annotation to this page
-                if (!isset($o['info']['annot'])) {
-                    $o['info']['annot'] = [];
-                }
-
-                // $options should contain the id of the annotation dictionary
-                $o['info']['annot'][] = $options;
-                break;
-
-            case 'out':
-                $res = "\n$id 0 obj\n<< /Type /Page";
-                if (isset($o['info']['mediaBox'])) {
-                    $tmp = $o['info']['mediaBox'];
-                    $res .= "\n/MediaBox [" . sprintf(
-                            '%.3F %.3F %.3F %.3F',
-                            $tmp[0],
-                            $tmp[1],
-                            $tmp[2],
-                            $tmp[3]
-                        ) . ']';
-                }
-                $res .= "\n/Parent " . $o['info']['parent'] . " 0 R";
-
-                if (isset($o['info']['annot'])) {
-                    $res .= "\n/Annots [";
-                    foreach ($o['info']['annot'] as $aId) {
-                        $res .= " $aId 0 R";
-                    }
-                    $res .= " ]";
-                }
-
-                $count = count($o['info']['contents']);
-                if ($count == 1) {
-                    $res .= "\n/Contents " . $o['info']['contents'][0] . " 0 R";
-                } else {
-                    if ($count > 1) {
-                        $res .= "\n/Contents [\n";
-
-                        // reverse the page contents so added objects are below normal content
-                        //foreach (array_reverse($o['info']['contents']) as $cId) {
-                        // Back to normal now that I've got transparency working --Benj
-                        foreach ($o['info']['contents'] as $cId) {
-                            $res .= "$cId 0 R\n";
-                        }
-                        $res .= "]";
-                    }
-                }
-
-                $res .= "\n>>\nendobj";
-
-                return $res;
-        }
-
-        return null;
-    }
-
-    /**
-     * the contents objects hold all of the content which appears on pages
-     *
-     * @param $id
-     * @param $action
-     * @param string|array $options
-     * @return null|string
-     */
-    protected function o_contents($id, $action, $options = '')
-    {
-        if ($action !== 'new') {
-            $o = &$this->objects[$id];
-        }
-
-        switch ($action) {
-            case 'new':
-                $this->objects[$id] = ['t' => 'contents', 'c' => '', 'info' => []];
-                if (mb_strlen($options, '8bit') && intval($options)) {
-                    // then this contents is the primary for a page
-                    $this->objects[$id]['onPage'] = $options;
-                } else {
-                    if ($options === 'raw') {
-                        // then this page contains some other type of system object
-                        $this->objects[$id]['raw'] = 1;
-                    }
-                }
-                break;
-
-            case 'add':
-                // add more options to the declaration
-                foreach ($options as $k => $v) {
-                    $o['info'][$k] = $v;
-                }
-
-            case 'out':
-                $tmp = $o['c'];
-                $res = "\n$id 0 obj\n";
-
-                if (isset($this->objects[$id]['raw'])) {
-                    $res .= $tmp;
-                } else {
-                    $res .= "<<";
-                    if ($this->compressionReady && $this->options['compression']) {
-                        // then implement ZLIB based compression on this content stream
-                        $res .= " /Filter /FlateDecode";
-                        $tmp = gzcompress($tmp, 6);
-                    }
-
-                    if ($this->encrypted) {
-                        $this->encryptInit($id);
-                        $tmp = $this->ARC4($tmp);
-                    }
-
-                    foreach ($o['info'] as $k => $v) {
-                        $res .= "\n/$k $v";
-                    }
-
-                    $res .= "\n/Length " . mb_strlen($tmp, '8bit') . " >>\nstream\n$tmp\nendstream";
-                }
-
-                $res .= "\nendobj";
-
-                return $res;
-        }
-
-        return null;
-    }
-
-    /**
-     * @param $id
-     * @param $action
-     * @return string|null
-     */
-    protected function o_embedjs($id, $action)
-    {
-        switch ($action) {
-            case 'new':
-                $this->objects[$id] = [
-                    't'    => 'embedjs',
-                    'info' => [
-                        'Names' => '[(EmbeddedJS) ' . ($id + 1) . ' 0 R]'
-                    ]
-                ];
-                break;
-
-            case 'out':
-                $o = &$this->objects[$id];
-                $res = "\n$id 0 obj\n<< ";
-                foreach ($o['info'] as $k => $v) {
-                    $res .= "\n/$k $v";
-                }
-                $res .= "\n>>\nendobj";
-
-                return $res;
-        }
-
-        return null;
-    }
-
-    /**
-     * @param $id
-     * @param $action
-     * @param string $code
-     * @return null|string
-     */
-    protected function o_javascript($id, $action, $code = '')
-    {
-        switch ($action) {
-            case 'new':
-                $this->objects[$id] = [
-                    't'    => 'javascript',
-                    'info' => [
-                        'S'  => '/JavaScript',
-                        'JS' => '(' . $this->filterText($code, true, false) . ')',
-                    ]
-                ];
-                break;
-
-            case 'out':
-                $o = &$this->objects[$id];
-                $res = "\n$id 0 obj\n<< ";
-
-                foreach ($o['info'] as $k => $v) {
-                    $res .= "\n/$k $v";
-                }
-                $res .= "\n>>\nendobj";
-
-                return $res;
-        }
-
-        return null;
-    }
-
-    /**
-     * an image object, will be an XObject in the document, includes description and data
-     *
-     * @param $id
-     * @param $action
-     * @param string $options
-     * @return null|string
-     */
-    protected function o_image($id, $action, $options = '')
-    {
-        switch ($action) {
-            case 'new':
-                // make the new object
-                $this->objects[$id] = ['t' => 'image', 'data' => &$options['data'], 'info' => []];
-
-                $info =& $this->objects[$id]['info'];
-
-                $info['Type'] = '/XObject';
-                $info['Subtype'] = '/Image';
-                $info['Width'] = $options['iw'];
-                $info['Height'] = $options['ih'];
-
-                if (isset($options['masked']) && $options['masked']) {
-                    $info['SMask'] = ($this->numObj - 1) . ' 0 R';
-                }
-
-                if (!isset($options['type']) || $options['type'] === 'jpg') {
-                    if (!isset($options['channels'])) {
-                        $options['channels'] = 3;
-                    }
-
-                    switch ($options['channels']) {
-                        case 1:
-                            $info['ColorSpace'] = '/DeviceGray';
-                            break;
-                        case 4:
-                            $info['ColorSpace'] = '/DeviceCMYK';
-                            break;
-                        default:
-                            $info['ColorSpace'] = '/DeviceRGB';
-                            break;
-                    }
-
-                    if ($info['ColorSpace'] === '/DeviceCMYK') {
-                        $info['Decode'] = '[1 0 1 0 1 0 1 0]';
-                    }
-
-                    $info['Filter'] = '/DCTDecode';
-                    $info['BitsPerComponent'] = 8;
-                } else {
-                    if ($options['type'] === 'png') {
-                        $info['Filter'] = '/FlateDecode';
-                        $info['DecodeParms'] = '<< /Predictor 15 /Colors ' . $options['ncolor'] . ' /Columns ' . $options['iw'] . ' /BitsPerComponent ' . $options['bitsPerComponent'] . '>>';
-
-                        if ($options['isMask']) {
-                            $info['ColorSpace'] = '/DeviceGray';
-                        } else {
-                            if (mb_strlen($options['pdata'], '8bit')) {
-                                $tmp = ' [ /Indexed /DeviceRGB ' . (mb_strlen($options['pdata'], '8bit') / 3 - 1) . ' ';
-                                $this->numObj++;
-                                $this->o_contents($this->numObj, 'new');
-                                $this->objects[$this->numObj]['c'] = $options['pdata'];
-                                $tmp .= $this->numObj . ' 0 R';
-                                $tmp .= ' ]';
-                                $info['ColorSpace'] = $tmp;
-
-                                if (isset($options['transparency'])) {
-                                    $transparency = $options['transparency'];
-                                    switch ($transparency['type']) {
-                                        case 'indexed':
-                                            $tmp = ' [ ' . $transparency['data'] . ' ' . $transparency['data'] . '] ';
-                                            $info['Mask'] = $tmp;
-                                            break;
-
-                                        case 'color-key':
-                                            $tmp = ' [ ' .
-                                                $transparency['r'] . ' ' . $transparency['r'] .
-                                                $transparency['g'] . ' ' . $transparency['g'] .
-                                                $transparency['b'] . ' ' . $transparency['b'] .
-                                                ' ] ';
-                                            $info['Mask'] = $tmp;
-                                            break;
-                                    }
-                                }
-                            } else {
-                                if (isset($options['transparency'])) {
-                                    $transparency = $options['transparency'];
-
-                                    switch ($transparency['type']) {
-                                        case 'indexed':
-                                            $tmp = ' [ ' . $transparency['data'] . ' ' . $transparency['data'] . '] ';
-                                            $info['Mask'] = $tmp;
-                                            break;
-
-                                        case 'color-key':
-                                            $tmp = ' [ ' .
-                                                $transparency['r'] . ' ' . $transparency['r'] . ' ' .
-                                                $transparency['g'] . ' ' . $transparency['g'] . ' ' .
-                                                $transparency['b'] . ' ' . $transparency['b'] .
-                                                ' ] ';
-                                            $info['Mask'] = $tmp;
-                                            break;
-                                    }
-                                }
-                                $info['ColorSpace'] = '/' . $options['color'];
-                            }
-                        }
-
-                        $info['BitsPerComponent'] = $options['bitsPerComponent'];
-                    }
-                }
-
-                // assign it a place in the named resource dictionary as an external object, according to
-                // the label passed in with it.
-                $this->o_pages($this->currentNode, 'xObject', ['label' => $options['label'], 'objNum' => $id]);
-
-                // also make sure that we have the right procset object for it.
-                $this->o_procset($this->procsetObjectId, 'add', 'ImageC');
-                break;
-
-            case 'out':
-                $o = &$this->objects[$id];
-                $tmp = &$o['data'];
-                $res = "\n$id 0 obj\n<<";
-
-                foreach ($o['info'] as $k => $v) {
-                    $res .= "\n/$k $v";
-                }
-
-                if ($this->encrypted) {
-                    $this->encryptInit($id);
-                    $tmp = $this->ARC4($tmp);
-                }
-
-                $res .= "\n/Length " . mb_strlen($tmp, '8bit') . ">>\nstream\n$tmp\nendstream\nendobj";
-
-                return $res;
-        }
-
-        return null;
-    }
-
-    /**
-     * graphics state object
-     *
-     * @param $id
-     * @param $action
-     * @param string $options
-     * @return null|string
-     */
-    protected function o_extGState($id, $action, $options = "")
-    {
-        static $valid_params = [
-            "LW",
-            "LC",
-            "LC",
-            "LJ",
-            "ML",
-            "D",
-            "RI",
-            "OP",
-            "op",
-            "OPM",
-            "Font",
-            "BG",
-            "BG2",
-            "UCR",
-            "TR",
-            "TR2",
-            "HT",
-            "FL",
-            "SM",
-            "SA",
-            "BM",
-            "SMask",
-            "CA",
-            "ca",
-            "AIS",
-            "TK"
-        ];
-
-        switch ($action) {
-            case "new":
-                $this->objects[$id] = ['t' => 'extGState', 'info' => $options];
-
-                // Tell the pages about the new resource
-                $this->numStates++;
-                $this->o_pages($this->currentNode, 'extGState', ["objNum" => $id, "stateNum" => $this->numStates]);
-                break;
-
-            case "out":
-                $o = &$this->objects[$id];
-                $res = "\n$id 0 obj\n<< /Type /ExtGState\n";
-
-                foreach ($o["info"] as $k => $v) {
-                    if (!in_array($k, $valid_params)) {
-                        continue;
-                    }
-                    $res .= "/$k $v\n";
-                }
-
-                $res .= ">>\nendobj";
-
-                return $res;
-        }
-
-        return null;
-    }
-
-    /**
-     * @param integer $id
-     * @param string $action
-     * @param mixed $options
-     * @return string
-     */
-    protected function o_xobject($id, $action, $options = '')
-    {
-        switch ($action) {
-            case 'new':
-                $this->objects[$id] = ['t' => 'xobject', 'info' => $options, 'c' => ''];
-                break;
-
-            case 'procset':
-                $this->objects[$id]['procset'] = $options;
-                break;
-
-            case 'font':
-                $this->objects[$id]['fonts'][$options['fontNum']] = [
-                  'objNum' => $options['objNum'],
-                  'fontNum' => $options['fontNum']
-                ];
-                break;
-
-            case 'xObject':
-                $this->objects[$id]['xObjects'][] = ['objNum' => $options['objNum'], 'label' => $options['label']];
-                break;
-
-            case 'out':
-                $o = &$this->objects[$id];
-                $res = "\n$id 0 obj\n<< /Type /XObject\n";
-
-                foreach ($o["info"] as $k => $v) {
-                    switch ($k) {
-                        case 'Subtype':
-                            $res .= "/Subtype /$v\n";
-                            break;
-                        case 'bbox':
-                            $res .= "/BBox [";
-                            foreach ($v as $value) {
-                                $res .= sprintf("%.4F ", $value);
-                            }
-                            $res .= "]\n";
-                            break;
-                        default:
-                            $res .= "/$k $v\n";
-                            break;
-                    }
-                }
-                $res .= "/Matrix[1.0 0.0 0.0 1.0 0.0 0.0]\n";
-
-                $res .= "/Resources <<";
-                if (isset($o['procset'])) {
-                    $res .= "\n/ProcSet " . $o['procset'] . " 0 R";
-                } else {
-                    $res .= "\n/ProcSet [/PDF /Text /ImageB /ImageC /ImageI]";
-                }
-                if (isset($o['fonts']) && count($o['fonts'])) {
-                    $res .= "\n/Font << ";
-                    foreach ($o['fonts'] as $finfo) {
-                        $res .= "\n/F" . $finfo['fontNum'] . " " . $finfo['objNum'] . " 0 R";
-                    }
-                    $res .= "\n>>";
-                }
-                if (isset($o['xObjects']) && count($o['xObjects'])) {
-                    $res .= "\n/XObject << ";
-                    foreach ($o['xObjects'] as $finfo) {
-                        $res .= "\n/" . $finfo['label'] . " " . $finfo['objNum'] . " 0 R";
-                    }
-                    $res .= "\n>>";
-                }
-                $res .= "\n>>\n";
-
-                $tmp = $o["c"];
-                if ($this->compressionReady && $this->options['compression']) {
-                    // then implement ZLIB based compression on this content stream
-                    $res .= " /Filter /FlateDecode\n";
-                    $tmp = gzcompress($tmp, 6);
-                }
-
-                if ($this->encrypted) {
-                    $this->encryptInit($id);
-                    $tmp = $this->ARC4($tmp);
-                }
-
-                $res .= "/Length " . mb_strlen($tmp, '8bit') . " >>\n";
-                $res .= "stream\n" . $tmp . "\nendstream" . "\nendobj";
-
-                return $res;
-        }
-
-        return null;
-    }
-
-    /**
-     * @param $id
-     * @param $action
-     * @param string $options
-     * @return null|string
-     */
-    protected function o_acroform($id, $action, $options = '')
-    {
-        switch ($action) {
-            case "new":
-                $this->o_catalog($this->catalogId, 'acroform', $id);
-                $this->objects[$id] = array('t' => 'acroform', 'info' => $options);
-                break;
-
-            case 'addfield':
-                $this->objects[$id]['info']['Fields'][] = $options;
-                break;
-
-            case 'font':
-                $this->objects[$id]['fonts'][$options['fontNum']] = [
-                  'objNum' => $options['objNum'],
-                  'fontNum' => $options['fontNum']
-                ];
-                break;
-
-            case "out":
-                $o = &$this->objects[$id];
-                $res = "\n$id 0 obj\n<<";
-
-                foreach ($o["info"] as $k => $v) {
-                    switch ($k) {
-                        case 'Fields':
-                            $res .= " /Fields [";
-                            foreach ($v as $i) {
-                                $res .= "$i 0 R ";
-                            }
-                            $res .= "]\n";
-                            break;
-                        default:
-                            $res .= "/$k $v\n";
-                    }
-                }
-
-                $res .= "/DR <<\n";
-                if (isset($o['fonts']) && count($o['fonts'])) {
-                    $res .= "/Font << \n";
-                    foreach ($o['fonts'] as $finfo) {
-                        $res .= "/F" . $finfo['fontNum'] . " " . $finfo['objNum'] . " 0 R\n";
-                    }
-                    $res .= ">>\n";
-                }
-                $res .= ">>\n";
-
-                $res .= ">>\nendobj";
-
-                return $res;
-        }
-
-        return null;
-    }
-
-    /**
-     * @param $id
-     * @param $action
-     * @param mixed $options
-     * @return null|string
-     */
-    protected function o_field($id, $action, $options = '')
-    {
-        switch ($action) {
-            case "new":
-                $this->o_page($options['pageid'], 'annot', $id);
-                $this->o_acroform($this->acroFormId, 'addfield', $id);
-                $this->objects[$id] = ['t' => 'field', 'info' => $options];
-                break;
-
-            case 'set':
-                $this->objects[$id]['info'] = array_merge($this->objects[$id]['info'], $options);
-                break;
-
-            case "out":
-                $o = &$this->objects[$id];
-                $res = "\n$id 0 obj\n<< /Type /Annot /Subtype /Widget \n";
-
-                $encrypted = $this->encrypted;
-                if ($encrypted) {
-                    $this->encryptInit($id);
-                }
-
-                foreach ($o["info"] as $k => $v) {
-                    switch ($k) {
-                        case 'pageid':
-                            $res .= "/P $v 0 R\n";
-                            break;
-                        case 'value':
-                            if ($encrypted) {
-                                $v = $this->filterText($this->ARC4($v), false, false);
-                            }
-                            $res .= "/V ($v)\n";
-                            break;
-                        case 'refvalue':
-                            $res .= "/V $v 0 R\n";
-                            break;
-                        case 'da':
-                            if ($encrypted) {
-                                $v = $this->filterText($this->ARC4($v), false, false);
-                            }
-                            $res .= "/DA ($v)\n";
-                            break;
-                        case 'options':
-                            $res .= "/Opt [\n";
-                            foreach ($v as $opt) {
-                                if ($encrypted) {
-                                    $opt = $this->filterText($this->ARC4($opt), false, false);
-                                }
-                                $res .= "($opt)\n";
-                            }
-                            $res .= "]\n";
-                            break;
-                        case 'rect':
-                            $res .= "/Rect [";
-                            foreach ($v as $value) {
-                                $res .= sprintf("%.4F ", $value);
-                            }
-                            $res .= "]\n";
-                            break;
-                        case 'appearance':
-                            $res .= "/AP << ";
-                            foreach ($v as $a => $ref) {
-                                $res .= "/$a $ref 0 R ";
-                            }
-                            $res .= ">>\n";
-                            break;
-                        case 'T':
-                            if ($encrypted) {
-                                $v = $this->filterText($this->ARC4($v), false, false);
-                            }
-                            $res .= "/T ($v)\n";
-                            break;
-                        default:
-                            $res .= "/$k $v\n";
-                    }
-
-                }
-
-                $res .= ">>\nendobj";
-
-                return $res;
-        }
-
-        return null;
-    }
-
-    /**
-     *
-     * @param $id
-     * @param $action
-     * @param string $options
-     * @return null|string
-     */
-    protected function o_sig($id, $action, $options = '')
-    {
-        $sign_maxlen = $this->signatureMaxLen;
-
-        switch ($action) {
-            case "new":
-                $this->objects[$id] = array('t' => 'sig', 'info' => $options);
-                $this->byteRange[$id] = ['t' => 'sig'];
-                break;
-
-            case 'byterange':
-                $o = &$this->objects[$id];
-                $content =& $options['content'];
-                $content_len = strlen($content);
-                $pos = strpos($content, sprintf("/ByteRange [ %'.010d", $id));
-                $len = strlen('/ByteRange [ ********** ********** ********** ********** ]');
-                $rangeStartPos = $pos + $len + 1 + 10; // before '<'
-                $content = substr_replace($content, str_pad(sprintf('/ByteRange [ 0 %u %u %u ]', $rangeStartPos, $rangeStartPos + $sign_maxlen + 2, $content_len - 2 - $sign_maxlen - $rangeStartPos), $len, ' ', STR_PAD_RIGHT), $pos, $len);
-
-                $fuid = uniqid();
-                $tmpInput = $this->tmp . "/pkcs7.tmp." . $fuid . '.in';
-                $tmpOutput = $this->tmp . "/pkcs7.tmp." . $fuid . '.out';
-
-                if (file_put_contents($tmpInput, substr($content, 0, $rangeStartPos)) === false) {
-                    throw new \Exception("Unable to write temporary file for signing.");
-                }
-                if (file_put_contents($tmpInput, substr($content, $rangeStartPos + 2 + $sign_maxlen),
-                    FILE_APPEND) === false) {
-                    throw new \Exception("Unable to write temporary file for signing.");
-                }
-
-                if (openssl_pkcs7_sign($tmpInput, $tmpOutput,
-                    $o['info']['SignCert'],
-                    array($o['info']['PrivKey'], $o['info']['Password']),
-                    array(), PKCS7_BINARY | PKCS7_DETACHED) === false) {
-                    throw new \Exception("Failed to prepare signature.");
-                }
-
-                $signature = file_get_contents($tmpOutput);
-
-                unlink($tmpInput);
-                unlink($tmpOutput);
-
-                $sign = substr($signature, (strpos($signature, "%%EOF\n\n------") + 13));
-                list($head, $signature) = explode("\n\n", $sign);
-
-                $signature = base64_decode(trim($signature));
-
-                $signature = current(unpack('H*', $signature));
-                $signature = str_pad($signature, $sign_maxlen, '0');
-                $siglen = strlen($signature);
-                if (strlen($signature) > $sign_maxlen) {
-                    throw new \Exception("Signature length ($siglen) exceeds the $sign_maxlen limit.");
-                }
-
-                $content = substr_replace($content, $signature, $rangeStartPos + 1, $sign_maxlen);
-                break;
-
-            case "out":
-                $res = "\n$id 0 obj\n<<\n";
-
-                $encrypted = $this->encrypted;
-                if ($encrypted) {
-                    $this->encryptInit($id);
-                }
-
-                $res .= "/ByteRange " .sprintf("[ %'.010d ********** ********** ********** ]\n", $id);
-                $res .= "/Contents <" . str_pad('', $sign_maxlen, '0') . ">\n";
-                $res .= "/Filter/Adobe.PPKLite\n"; //PPKMS \n";
-                $res .= "/Type/Sig/SubFilter/adbe.pkcs7.detached \n";
-
-                $date = "D:" . substr_replace(date('YmdHisO'), '\'', -2, 0) . '\'';
-                if ($encrypted) {
-                    $date = $this->ARC4($date);
-                }
-
-                $res .= "/M ($date)\n";
-                $res .= "/Prop_Build << /App << /Name /DomPDF >> /Filter << /Name /Adobe.PPKLite >> >>\n";
-
-                $o = &$this->objects[$id];
-                foreach ($o['info'] as $k => $v) {
-                    switch ($k) {
-                        case 'Name':
-                        case 'Location':
-                        case 'Reason':
-                        case 'ContactInfo':
-                            if ($v !== null && $v !== '') {
-                                $res .= "/$k (" .
-                                  ($encrypted ? $this->filterText($this->ARC4($v), false, false) : $v) . ") \n";
-                            }
-                            break;
-                    }
-                }
-                $res .= ">>\nendobj";
-
-                return $res;
-        }
-
-        return null;
-    }
-
-    /**
-     * encryption object.
-     *
-     * @param $id
-     * @param $action
-     * @param string $options
-     * @return string|null
-     */
-    protected function o_encryption($id, $action, $options = '')
-    {
-        switch ($action) {
-            case 'new':
-                // make the new object
-                $this->objects[$id] = ['t' => 'encryption', 'info' => $options];
-                $this->arc4_objnum = $id;
-                break;
-
-            case 'keys':
-                // figure out the additional parameters required
-                $pad = chr(0x28) . chr(0xBF) . chr(0x4E) . chr(0x5E) . chr(0x4E) . chr(0x75) . chr(0x8A) . chr(0x41)
-                    . chr(0x64) . chr(0x00) . chr(0x4E) . chr(0x56) . chr(0xFF) . chr(0xFA) . chr(0x01) . chr(0x08)
-                    . chr(0x2E) . chr(0x2E) . chr(0x00) . chr(0xB6) . chr(0xD0) . chr(0x68) . chr(0x3E) . chr(0x80)
-                    . chr(0x2F) . chr(0x0C) . chr(0xA9) . chr(0xFE) . chr(0x64) . chr(0x53) . chr(0x69) . chr(0x7A);
-
-                $info = $this->objects[$id]['info'];
-
-                $len = mb_strlen($info['owner'], '8bit');
-
-                if ($len > 32) {
-                    $owner = substr($info['owner'], 0, 32);
-                } else {
-                    if ($len < 32) {
-                        $owner = $info['owner'] . substr($pad, 0, 32 - $len);
-                    } else {
-                        $owner = $info['owner'];
-                    }
-                }
-
-                $len = mb_strlen($info['user'], '8bit');
-                if ($len > 32) {
-                    $user = substr($info['user'], 0, 32);
-                } else {
-                    if ($len < 32) {
-                        $user = $info['user'] . substr($pad, 0, 32 - $len);
-                    } else {
-                        $user = $info['user'];
-                    }
-                }
-
-                $tmp = $this->md5_16($owner);
-                $okey = substr($tmp, 0, 5);
-                $this->ARC4_init($okey);
-                $ovalue = $this->ARC4($user);
-                $this->objects[$id]['info']['O'] = $ovalue;
-
-                // now make the u value, phew.
-                $tmp = $this->md5_16(
-                    $user . $ovalue . chr($info['p']) . chr(255) . chr(255) . chr(255) . hex2bin($this->fileIdentifier)
-                );
-
-                $ukey = substr($tmp, 0, 5);
-                $this->ARC4_init($ukey);
-                $this->encryptionKey = $ukey;
-                $this->encrypted = true;
-                $uvalue = $this->ARC4($pad);
-                $this->objects[$id]['info']['U'] = $uvalue;
-                // initialize the arc4 array
-                break;
-
-            case 'out':
-                $o = &$this->objects[$id];
-
-                $res = "\n$id 0 obj\n<<";
-                $res .= "\n/Filter /Standard";
-                $res .= "\n/V 1";
-                $res .= "\n/R 2";
-                $res .= "\n/O (" . $this->filterText($o['info']['O'], false, false) . ')';
-                $res .= "\n/U (" . $this->filterText($o['info']['U'], false, false) . ')';
-                // and the p-value needs to be converted to account for the twos-complement approach
-                $o['info']['p'] = (($o['info']['p'] ^ 255) + 1) * -1;
-                $res .= "\n/P " . ($o['info']['p']);
-                $res .= "\n>>\nendobj";
-
-                return $res;
-        }
-
-        return null;
-    }
-
-    protected function o_indirect_references($id, $action, $options = null)
-    {
-        switch ($action) {
-            case 'new':
-            case 'add':
-                if ($id === 0) {
-                    $id = ++$this->numObj;
-                    $this->o_catalog($this->catalogId, 'names', $id);
-                    $this->objects[$id] = ['t' => 'indirect_references', 'info' => $options];
-                    $this->indirectReferenceId = $id;
-                } else {
-                    $this->objects[$id]['info'] = array_merge($this->objects[$id]['info'], $options);
-                }
-                break;
-            case 'out':
-                $res = "\n$id 0 obj << ";
-
-                foreach ($this->objects[$id]['info'] as $referenceObjName => $referenceObjId) {
-                    $res .= "/$referenceObjName $referenceObjId 0 R ";
-                }
-
-                $res .= ">> endobj";
-                return $res;
-        }
-
-        return null;
-    }
-
-    protected function o_names($id, $action, $options = null)
-    {
-        switch ($action) {
-            case 'new':
-            case 'add':
-                if ($id === 0) {
-                    $id = ++$this->numObj;
-                    $this->objects[$id] = ['t' => 'names', 'info' => [$options]];
-                    $this->o_indirect_references($this->indirectReferenceId, 'add', ['EmbeddedFiles' => $id]);
-                    $this->embeddedFilesId = $id;
-                } else {
-                    $this->objects[$id]['info'][] = $options;
-                }
-                break;
-            case 'out':
-                $info = &$this->objects[$id]['info'];
-                $res = '';
-                if (count($info) > 0) {
-                    $res = "\n$id 0 obj << /Names [ ";
-
-                    if ($this->encrypted) {
-                        $this->encryptInit($id);
-                    }
-
-                    foreach ($info as $entry) {
-                        if ($this->encrypted) {
-                            $filename = $this->ARC4($entry['filename']);
-                        } else {
-                            $filename = $entry['filename'];
-                        }
-
-                        $res .= "($filename) " . $entry['dict_reference'] . " 0 R ";
-                    }
-
-                    $res .= "] >> endobj";
-                }
-                return $res;
-        }
-
-        return null;
-    }
-
-    protected function o_embedded_file_dictionary($id, $action, $options = null)
-    {
-        switch ($action) {
-            case 'new':
-                $embeddedFileId = ++$this->numObj;
-                $options['embedded_reference'] = $embeddedFileId;
-                $this->objects[$id] = ['t' => 'embedded_file_dictionary', 'info' => $options];
-                $this->o_embedded_file($embeddedFileId, 'new', $options);
-                $options['dict_reference'] = $id;
-                $this->o_names($this->embeddedFilesId, 'add', $options);
-                break;
-            case 'out':
-                $info = &$this->objects[$id]['info'];
-                $filename = $this->utf8toUtf16BE($info['filename']);
-                $description = $this->utf8toUtf16BE($info['description']);
-
-                if ($this->encrypted) {
-                    $this->encryptInit($id);
-                    $filename = $this->ARC4($filename);
-                    $description = $this->ARC4($description);
-                }
-
-                $filename = $this->filterText($filename, false, false);
-                $description = $this->filterText($description, false, false);
-
-                $res = "\n$id 0 obj <</Type /Filespec /EF";
-                $res .= " <</F " . $info['embedded_reference'] . " 0 R >>";
-                $res .= " /F ($filename) /UF ($filename) /Desc ($description)";
-                $res .= " >> endobj";
-                return $res;
-        }
-
-        return null;
-    }
-
-    protected function o_embedded_file($id, $action, $options = null): ?string
-    {
-        switch ($action) {
-            case 'new':
-                $this->objects[$id] = ['t' => 'embedded_file', 'info' => $options];
-                break;
-            case 'out':
-                $info = &$this->objects[$id]['info'];
-
-                if ($this->compressionReady) {
-                    $filepath = $info['filepath'];
-                    $checksum = md5_file($filepath);
-                    $f = fopen($filepath, "rb");
-
-                    $file_content_compressed = '';
-                    $deflateContext = deflate_init(ZLIB_ENCODING_DEFLATE, ['level' => 6]);
-                    while (($block = fread($f, 8192))) {
-                        $file_content_compressed .= deflate_add($deflateContext, $block, ZLIB_NO_FLUSH);
-                    }
-                    $file_content_compressed .= deflate_add($deflateContext, '', ZLIB_FINISH);
-                    $file_size_uncompressed = ftell($f);
-                    fclose($f);
-                } else {
-                    $file_content = file_get_contents($info['filepath']);
-                    $file_size_uncompressed = mb_strlen($file_content, '8bit');
-                    $checksum = md5($file_content);
-                }
-
-                if ($this->encrypted) {
-                    $this->encryptInit($id);
-                    $checksum = $this->ARC4($checksum);
-                    $file_content_compressed = $this->ARC4($file_content_compressed);
-                }
-                $file_size_compressed = mb_strlen($file_content_compressed, '8bit');
-
-                $res = "\n$id 0 obj <</Params <</Size $file_size_uncompressed /CheckSum ($checksum) >>" .
-                    " /Type/EmbeddedFile /Filter/FlateDecode" .
-                    " /Length $file_size_compressed >> stream\n$file_content_compressed\nendstream\nendobj";
-
-                return $res;
-        }
-
-        return null;
-    }
-
-    /**
-     * ARC4 functions
-     * A series of function to implement ARC4 encoding in PHP
-     */
-
-    /**
-     * calculate the 16 byte version of the 128 bit md5 digest of the string
-     *
-     * @param $string
-     * @return string
-     */
-    function md5_16($string)
-    {
-        $tmp = md5($string);
-        $out = '';
-        for ($i = 0; $i <= 30; $i = $i + 2) {
-            $out .= chr(hexdec(substr($tmp, $i, 2)));
-        }
-
-        return $out;
-    }
-
-    /**
-     * initialize the encryption for processing a particular object
-     *
-     * @param $id
-     */
-    function encryptInit($id)
-    {
-        $tmp = $this->encryptionKey;
-        $hex = dechex($id);
-        if (mb_strlen($hex, '8bit') < 6) {
-            $hex = substr('000000', 0, 6 - mb_strlen($hex, '8bit')) . $hex;
-        }
-        $tmp .= chr(hexdec(substr($hex, 4, 2)))
-            . chr(hexdec(substr($hex, 2, 2)))
-            . chr(hexdec(substr($hex, 0, 2)))
-            . chr(0)
-            . chr(0)
-        ;
-        $key = $this->md5_16($tmp);
-        $this->ARC4_init(substr($key, 0, 10));
-    }
-
-    /**
-     * initialize the ARC4 encryption
-     *
-     * @param string $key
-     */
-    function ARC4_init($key = '')
-    {
-        $this->arc4 = '';
-
-        // setup the control array
-        if (mb_strlen($key, '8bit') == 0) {
-            return;
-        }
-
-        $k = '';
-        while (mb_strlen($k, '8bit') < 256) {
-            $k .= $key;
-        }
-
-        $k = substr($k, 0, 256);
-        for ($i = 0; $i < 256; $i++) {
-            $this->arc4 .= chr($i);
-        }
-
-        $j = 0;
-
-        for ($i = 0; $i < 256; $i++) {
-            $t = $this->arc4[$i];
-            $j = ($j + ord($t) + ord($k[$i])) % 256;
-            $this->arc4[$i] = $this->arc4[$j];
-            $this->arc4[$j] = $t;
-        }
-    }
-
-    /**
-     * ARC4 encrypt a text string
-     *
-     * @param $text
-     * @return string
-     */
-    function ARC4($text)
-    {
-        $len = mb_strlen($text, '8bit');
-        $a = 0;
-        $b = 0;
-        $c = $this->arc4;
-        $out = '';
-        for ($i = 0; $i < $len; $i++) {
-            $a = ($a + 1) % 256;
-            $t = $c[$a];
-            $b = ($b + ord($t)) % 256;
-            $c[$a] = $c[$b];
-            $c[$b] = $t;
-            $k = ord($c[(ord($c[$a]) + ord($c[$b])) % 256]);
-            $out .= chr(ord($text[$i]) ^ $k);
-        }
-
-        return $out;
-    }
-
-    /**
-     * functions which can be called to adjust or add to the document
-     */
-
-    /**
-     * add a link in the document to an external URL
-     *
-     * @param $url
-     * @param $x0
-     * @param $y0
-     * @param $x1
-     * @param $y1
-     */
-    function addLink($url, $x0, $y0, $x1, $y1)
-    {
-        $this->numObj++;
-        $info = ['type' => 'link', 'url' => $url, 'rect' => [$x0, $y0, $x1, $y1]];
-        $this->o_annotation($this->numObj, 'new', $info);
-    }
-
-    /**
-     * add a link in the document to an internal destination (ie. within the document)
-     *
-     * @param $label
-     * @param $x0
-     * @param $y0
-     * @param $x1
-     * @param $y1
-     */
-    function addInternalLink($label, $x0, $y0, $x1, $y1)
-    {
-        $this->numObj++;
-        $info = ['type' => 'ilink', 'label' => $label, 'rect' => [$x0, $y0, $x1, $y1]];
-        $this->o_annotation($this->numObj, 'new', $info);
-    }
-
-    /**
-     * set the encryption of the document
-     * can be used to turn it on and/or set the passwords which it will have.
-     * also the functions that the user will have are set here, such as print, modify, add
-     *
-     * @param string $userPass
-     * @param string $ownerPass
-     * @param array $pc
-     */
-    function setEncryption($userPass = '', $ownerPass = '', $pc = [])
-    {
-        $p = bindec("11000000");
-
-        $options = ['print' => 4, 'modify' => 8, 'copy' => 16, 'add' => 32];
-
-        foreach ($pc as $k => $v) {
-            if ($v && isset($options[$k])) {
-                $p += $options[$k];
-            } else {
-                if (isset($options[$v])) {
-                    $p += $options[$v];
-                }
-            }
-        }
-
-        // implement encryption on the document
-        if ($this->arc4_objnum == 0) {
-            // then the block does not exist already, add it.
-            $this->numObj++;
-            if (mb_strlen($ownerPass) == 0) {
-                $ownerPass = $userPass;
-            }
-
-            $this->o_encryption($this->numObj, 'new', ['user' => $userPass, 'owner' => $ownerPass, 'p' => $p]);
-        }
-    }
-
-    /**
-     * should be used for internal checks, not implemented as yet
-     */
-    function checkAllHere()
-    {
-    }
-
-    /**
-     * return the pdf stream as a string returned from the function
-     *
-     * @param bool $debug
-     * @return string
-     */
-    function output($debug = false)
-    {
-        if ($debug) {
-            // turn compression off
-            $this->options['compression'] = false;
-        }
-
-        if ($this->javascript) {
-            $this->numObj++;
-
-            $js_id = $this->numObj;
-            $this->o_embedjs($js_id, 'new');
-            $this->o_javascript(++$this->numObj, 'new', $this->javascript);
-
-            $id = $this->catalogId;
-
-            $this->o_indirect_references($this->indirectReferenceId, 'add', ['JavaScript' => $js_id]);
-        }
-
-        if ($this->fileIdentifier === '') {
-            $tmp = implode('', $this->objects[$this->infoObject]['info']);
-            $this->fileIdentifier = md5('DOMPDF' . __FILE__ . $tmp . microtime() . mt_rand());
-        }
-
-        if ($this->arc4_objnum) {
-            $this->o_encryption($this->arc4_objnum, 'keys');
-            $this->ARC4_init($this->encryptionKey);
-        }
-
-        $this->checkAllHere();
-
-        $xref = [];
-        $content = '%PDF-' . self::PDF_VERSION;
-        $pos = mb_strlen($content, '8bit');
-
-        // pre-process o_font objects before output of all objects
-        foreach ($this->objects as $k => $v) {
-            if ($v['t'] === 'font') {
-                $this->o_font($k, 'add');
-            }
-        }
-
-        foreach ($this->objects as $k => $v) {
-            $tmp = 'o_' . $v['t'];
-            $cont = $this->$tmp($k, 'out');
-            $content .= $cont;
-            $xref[] = $pos + 1; //+1 to account for \n at the start of each object
-            $pos += mb_strlen($cont, '8bit');
-        }
-
-        $content .= "\nxref\n0 " . (count($xref) + 1) . "\n0000000000 65535 f \n";
-
-        foreach ($xref as $p) {
-            $content .= str_pad($p, 10, "0", STR_PAD_LEFT) . " 00000 n \n";
-        }
-
-        $content .= "trailer\n<<\n" .
-            '/Size ' . (count($xref) + 1) . "\n" .
-            '/Root 1 0 R' . "\n" .
-            '/Info ' . $this->infoObject . " 0 R\n"
-        ;
-
-        // if encryption has been applied to this document then add the marker for this dictionary
-        if ($this->arc4_objnum > 0) {
-            $content .= '/Encrypt ' . $this->arc4_objnum . " 0 R\n";
-        }
-
-        $content .= '/ID[<' . $this->fileIdentifier . '><' . $this->fileIdentifier . ">]\n";
-
-        // account for \n added at start of xref table
-        $pos++;
-
-        $content .= ">>\nstartxref\n$pos\n%%EOF\n";
-
-        if (count($this->byteRange) > 0) {
-            foreach ($this->byteRange as $k => $v) {
-                $tmp = 'o_' . $v['t'];
-                $this->$tmp($k, 'byterange', ['content' => &$content]);
-            }
-        }
-
-        return $content;
-    }
-
-    /**
-     * initialize a new document
-     * if this is called on an existing document results may be unpredictable, but the existing document would be lost at minimum
-     * this function is called automatically by the constructor function
-     *
-     * @param array $pageSize
-     */
-    private function newDocument($pageSize = [0, 0, 612, 792])
-    {
-        $this->numObj = 0;
-        $this->objects = [];
-
-        $this->numObj++;
-        $this->o_catalog($this->numObj, 'new');
-
-        $this->numObj++;
-        $this->o_outlines($this->numObj, 'new');
-
-        $this->numObj++;
-        $this->o_pages($this->numObj, 'new');
-
-        $this->o_pages($this->numObj, 'mediaBox', $pageSize);
-        $this->currentNode = 3;
-
-        $this->numObj++;
-        $this->o_procset($this->numObj, 'new');
-
-        $this->numObj++;
-        $this->o_info($this->numObj, 'new');
-
-        $this->numObj++;
-        $this->o_page($this->numObj, 'new');
-
-        // need to store the first page id as there is no way to get it to the user during
-        // startup
-        $this->firstPageId = $this->currentContents;
-    }
-
-    /**
-     * open the font file and return a php structure containing it.
-     * first check if this one has been done before and saved in a form more suited to php
-     * note that if a php serialized version does not exist it will try and make one, but will
-     * require write access to the directory to do it... it is MUCH faster to have these serialized
-     * files.
-     *
-     * @param $font
-     */
-    private function openFont($font)
-    {
-        // assume that $font contains the path and file but not the extension
-        $name = basename($font);
-        $dir = dirname($font);
-
-        $fontcache = $this->fontcache;
-        if ($fontcache == '') {
-            $fontcache = $dir;
-        }
-
-        //$name       filename without folder and extension of font metrics
-        //$dir        folder of font metrics
-        //$fontcache  folder of runtime created php serialized version of font metrics.
-        //            If this is not given, the same folder as the font metrics will be used.
-        //            Storing and reusing serialized versions improves speed much
-
-        $this->addMessage("openFont: $font - $name");
-
-        if (!$this->isUnicode || in_array(mb_strtolower(basename($name)), self::$coreFonts)) {
-            $metrics_name = "$name.afm";
-        } else {
-            $metrics_name = "$name.ufm";
-        }
-
-        $cache_name = "$metrics_name.json";
-        $this->addMessage("metrics: $metrics_name, cache: $cache_name");
-
-        if (file_exists($fontcache . '/' . $cache_name)) {
-            $this->addMessage("openFont: json metrics file exists $fontcache/$cache_name");
-            $cached_font_info = json_decode(file_get_contents($fontcache . '/' . $cache_name), true);
-            if (!isset($cached_font_info['_version_']) || $cached_font_info['_version_'] != $this->fontcacheVersion) {
-                $this->addMessage('openFont: font cache is out of date, regenerating');
-            } else {
-                $this->fonts[$font] = $cached_font_info;
-            }
-        }
-
-        if (!isset($this->fonts[$font]) && file_exists("$dir/$metrics_name")) {
-            // then rebuild the php_<font>.afm file from the <font>.afm file
-            $this->addMessage("openFont: build php file from $dir/$metrics_name");
-            $data = [];
-
-            // 20 => 'space'
-            $data['codeToName'] = [];
-
-            // Since we're not going to enable Unicode for the core fonts we need to use a font-based
-            // setting for Unicode support rather than a global setting.
-            $data['isUnicode'] = (strtolower(substr($metrics_name, -3)) !== 'afm');
-
-            $cidtogid = '';
-            if ($data['isUnicode']) {
-                $cidtogid = str_pad('', 256 * 256 * 2, "\x00");
-            }
-
-            $file = file("$dir/$metrics_name");
-
-            foreach ($file as $rowA) {
-                $row = trim($rowA);
-                $pos = strpos($row, ' ');
-
-                if ($pos) {
-                    // then there must be some keyword
-                    $key = substr($row, 0, $pos);
-                    switch ($key) {
-                        case 'FontName':
-                        case 'FullName':
-                        case 'FamilyName':
-                        case 'PostScriptName':
-                        case 'Weight':
-                        case 'ItalicAngle':
-                        case 'IsFixedPitch':
-                        case 'CharacterSet':
-                        case 'UnderlinePosition':
-                        case 'UnderlineThickness':
-                        case 'Version':
-                        case 'EncodingScheme':
-                        case 'CapHeight':
-                        case 'XHeight':
-                        case 'Ascender':
-                        case 'Descender':
-                        case 'StdHW':
-                        case 'StdVW':
-                        case 'StartCharMetrics':
-                        case 'FontHeightOffset': // OAR - Added so we can offset the height calculation of a Windows font.  Otherwise it's too big.
-                            $data[$key] = trim(substr($row, $pos));
-                            break;
-
-                        case 'FontBBox':
-                            $data[$key] = explode(' ', trim(substr($row, $pos)));
-                            break;
-
-                        //C 39 ; WX 222 ; N quoteright ; B 53 463 157 718 ;
-                        case 'C': // Found in AFM files
-                            $bits = explode(';', trim($row));
-                            $dtmp = ['C' => null, 'N' => null, 'WX' => null, 'B' => []];
-
-                            foreach ($bits as $bit) {
-                                $bits2 = explode(' ', trim($bit));
-                                if (mb_strlen($bits2[0], '8bit') == 0) {
-                                    continue;
-                                }
-
-                                if (count($bits2) > 2) {
-                                    $dtmp[$bits2[0]] = [];
-                                    for ($i = 1; $i < count($bits2); $i++) {
-                                        $dtmp[$bits2[0]][] = $bits2[$i];
-                                    }
-                                } else {
-                                    if (count($bits2) == 2) {
-                                        $dtmp[$bits2[0]] = $bits2[1];
-                                    }
-                                }
-                            }
-
-                            $c = (int)$dtmp['C'];
-                            $n = $dtmp['N'];
-                            $width = floatval($dtmp['WX']);
-
-                            if ($c >= 0) {
-                                if (!ctype_xdigit($n) || $c != hexdec($n)) {
-                                    $data['codeToName'][$c] = $n;
-                                }
-                                $data['C'][$c] = $width;
-                            } elseif (isset($n)) {
-                                $data['C'][$n] = $width;
-                            }
-
-                            if (!isset($data['MissingWidth']) && $c === -1 && $n === '.notdef') {
-                                $data['MissingWidth'] = $width;
-                            }
-
-                            break;
-
-                        // U 827 ; WX 0 ; N squaresubnosp ; G 675 ;
-                        case 'U': // Found in UFM files
-                            if (!$data['isUnicode']) {
-                                break;
-                            }
-
-                            $bits = explode(';', trim($row));
-                            $dtmp = ['G' => null, 'N' => null, 'U' => null, 'WX' => null];
-
-                            foreach ($bits as $bit) {
-                                $bits2 = explode(' ', trim($bit));
-                                if (mb_strlen($bits2[0], '8bit') === 0) {
-                                    continue;
-                                }
-
-                                if (count($bits2) > 2) {
-                                    $dtmp[$bits2[0]] = [];
-                                    for ($i = 1; $i < count($bits2); $i++) {
-                                        $dtmp[$bits2[0]][] = $bits2[$i];
-                                    }
-                                } else {
-                                    if (count($bits2) == 2) {
-                                        $dtmp[$bits2[0]] = $bits2[1];
-                                    }
-                                }
-                            }
-
-                            $c = (int)$dtmp['U'];
-                            $n = $dtmp['N'];
-                            $glyph = $dtmp['G'];
-                            $width = floatval($dtmp['WX']);
-
-                            if ($c >= 0) {
-                                // Set values in CID to GID map
-                                if ($c >= 0 && $c < 0xFFFF && $glyph) {
-                                    $cidtogid[$c * 2] = chr($glyph >> 8);
-                                    $cidtogid[$c * 2 + 1] = chr($glyph & 0xFF);
-                                }
-
-                                if (!ctype_xdigit($n) || $c != hexdec($n)) {
-                                    $data['codeToName'][$c] = $n;
-                                }
-                                $data['C'][$c] = $width;
-                            } elseif (isset($n)) {
-                                $data['C'][$n] = $width;
-                            }
-
-                            if (!isset($data['MissingWidth']) && $c === -1 && $n === '.notdef') {
-                                $data['MissingWidth'] = $width;
-                            }
-
-                            break;
-
-                        case 'KPX':
-                            break; // don't include them as they are not used yet
-                            //KPX Adieresis yacute -40
-                            /*$bits = explode(' ', trim($row));
+				$res = "\n$id 0 obj\n";
+				$res .= "<</Length " . mb_strlen($stream, '8bit') . " >>\n";
+				$res .= "stream\n" . $stream . "\nendstream" . "\nendobj";
+
+				return $res;
+		}
+
+		return null;
+	}
+
+	/**
+	 * a font descriptor, needed for including additional fonts
+	 *
+	 * @param $id
+	 * @param $action
+	 * @param string $options
+	 * @return null|string
+	 */
+	protected function o_fontDescriptor($id, $action, $options = '')
+	{
+		if ($action !== 'new') {
+			$o = &$this->objects[$id];
+		}
+
+		switch ($action) {
+			case 'new':
+				$this->objects[$id] = ['t' => 'fontDescriptor', 'info' => $options];
+				break;
+
+			case 'out':
+				$res = "\n$id 0 obj\n<< /Type /FontDescriptor\n";
+				foreach ($o['info'] as $label => $value) {
+					switch ($label) {
+						case 'Ascent':
+						case 'CapHeight':
+						case 'Descent':
+						case 'Flags':
+						case 'ItalicAngle':
+						case 'StemV':
+						case 'AvgWidth':
+						case 'Leading':
+						case 'MaxWidth':
+						case 'MissingWidth':
+						case 'StemH':
+						case 'XHeight':
+						case 'CharSet':
+							if (mb_strlen($value, '8bit')) {
+								$res .= "/$label $value\n";
+							}
+
+							break;
+						case 'FontFile':
+						case 'FontFile2':
+						case 'FontFile3':
+							$res .= "/$label $value 0 R\n";
+							break;
+
+						case 'FontBBox':
+							$res .= "/$label [$value[0] $value[1] $value[2] $value[3]]\n";
+							break;
+
+						case 'FontName':
+							$res .= "/$label /$value\n";
+							break;
+					}
+				}
+
+				$res .= ">>\nendobj";
+
+				return $res;
+		}
+
+		return null;
+	}
+
+	/**
+	 * the font encoding
+	 *
+	 * @param $id
+	 * @param $action
+	 * @param string $options
+	 * @return null|string
+	 */
+	protected function o_fontEncoding($id, $action, $options = '')
+	{
+		if ($action !== 'new') {
+			$o = &$this->objects[$id];
+		}
+
+		switch ($action) {
+			case 'new':
+				// the options array should contain 'differences' and maybe 'encoding'
+				$this->objects[$id] = ['t' => 'fontEncoding', 'info' => $options];
+				break;
+
+			case 'out':
+				$res = "\n$id 0 obj\n<< /Type /Encoding\n";
+				if (!isset($o['info']['encoding'])) {
+					$o['info']['encoding'] = 'WinAnsiEncoding';
+				}
+
+				if ($o['info']['encoding'] !== 'none') {
+					$res .= "/BaseEncoding /" . $o['info']['encoding'] . "\n";
+				}
+
+				$res .= "/Differences \n[";
+
+				$onum = -100;
+
+				foreach ($o['info']['differences'] as $num => $label) {
+					if ($num != $onum + 1) {
+						// we cannot make use of consecutive numbering
+						$res .= "\n$num /$label";
+					} else {
+						$res .= " /$label";
+					}
+
+					$onum = $num;
+				}
+
+				$res .= "\n]\n>>\nendobj";
+
+				return $res;
+		}
+
+		return null;
+	}
+
+	/**
+	 * a descendent cid font, needed for unicode fonts
+	 *
+	 * @param $id
+	 * @param $action
+	 * @param string|array $options
+	 * @return null|string
+	 */
+	protected function o_fontDescendentCID($id, $action, $options = '')
+	{
+		if ($action !== 'new') {
+			$o = &$this->objects[$id];
+		}
+
+		switch ($action) {
+			case 'new':
+				$this->objects[$id] = ['t' => 'fontDescendentCID', 'info' => $options];
+
+				// we need a CID system info section
+				$cidSystemInfoId = ++$this->numObj;
+				$this->o_cidSystemInfo($cidSystemInfoId, 'new');
+				$this->objects[$id]['info']['cidSystemInfo'] = $cidSystemInfoId;
+
+				// and a CID to GID map
+				$cidToGidMapId = ++$this->numObj;
+				$this->o_fontGIDtoCIDMap($cidToGidMapId, 'new', $options);
+				$this->objects[$id]['info']['cidToGidMap'] = $cidToGidMapId;
+				break;
+
+			case 'add':
+				foreach ($options as $k => $v) {
+					switch ($k) {
+						case 'BaseFont':
+							$o['info']['name'] = $v;
+							break;
+
+						case 'FirstChar':
+						case 'LastChar':
+						case 'MissingWidth':
+						case 'FontDescriptor':
+						case 'SubType':
+							$this->addMessage("o_fontDescendentCID $k : $v");
+							$o['info'][$k] = $v;
+							break;
+					}
+				}
+
+				// pass values down to cid to gid map
+				$this->o_fontGIDtoCIDMap($o['info']['cidToGidMap'], 'add', $options);
+				break;
+
+			case 'out':
+				$res = "\n$id 0 obj\n";
+				$res .= "<</Type /Font\n";
+				$res .= "/Subtype /CIDFontType2\n";
+				$res .= "/BaseFont /" . $o['info']['name'] . "\n";
+				$res .= "/CIDSystemInfo " . $o['info']['cidSystemInfo'] . " 0 R\n";
+				//      if (isset($o['info']['FirstChar'])) {
+				//        $res.= "/FirstChar ".$o['info']['FirstChar']."\n";
+				//      }
+
+				//      if (isset($o['info']['LastChar'])) {
+				//        $res.= "/LastChar ".$o['info']['LastChar']."\n";
+				//      }
+				if (isset($o['info']['FontDescriptor'])) {
+					$res .= "/FontDescriptor " . $o['info']['FontDescriptor'] . " 0 R\n";
+				}
+
+				if (isset($o['info']['MissingWidth'])) {
+					$res .= "/DW " . $o['info']['MissingWidth'] . "\n";
+				}
+
+				if (isset($o['info']['fontFileName']) && isset($this->fonts[$o['info']['fontFileName']]['CIDWidths'])) {
+					$cid_widths = &$this->fonts[$o['info']['fontFileName']]['CIDWidths'];
+					$w = '';
+					foreach ($cid_widths as $cid => $width) {
+						$w .= "$cid [$width] ";
+					}
+					$res .= "/W [$w]\n";
+				}
+
+				$res .= "/CIDToGIDMap " . $o['info']['cidToGidMap'] . " 0 R\n";
+				$res .= ">>\n";
+				$res .= "endobj";
+
+				return $res;
+		}
+
+		return null;
+	}
+
+	/**
+	 * CID system info section, needed for unicode fonts
+	 *
+	 * @param $id
+	 * @param $action
+	 * @return null|string
+	 */
+	protected function o_cidSystemInfo($id, $action)
+	{
+		switch ($action) {
+			case 'new':
+				$this->objects[$id] = [
+					't' => 'cidSystemInfo'
+				];
+				break;
+			case 'add':
+				break;
+			case 'out':
+				$ordering = 'UCS';
+				$registry = 'Adobe';
+
+				if ($this->encrypted) {
+					$this->encryptInit($id);
+					$ordering = $this->ARC4($ordering);
+					$registry = $this->ARC4($registry);
+				}
+
+
+				$res = "\n$id 0 obj\n";
+
+				$res .= '<</Registry (' . $registry . ")\n"; // A string identifying an issuer of character collections
+				$res .= '/Ordering (' . $ordering . ")\n"; // A string that uniquely names a character collection issued by a specific registry
+				$res .= "/Supplement 0\n"; // The supplement number of the character collection.
+				$res .= ">>";
+
+				$res .= "\nendobj";
+
+				return $res;
+		}
+
+		return null;
+	}
+
+	/**
+	 * a font glyph to character map, needed for unicode fonts
+	 *
+	 * @param $id
+	 * @param $action
+	 * @param string $options
+	 * @return null|string
+	 */
+	protected function o_fontGIDtoCIDMap($id, $action, $options = '')
+	{
+		if ($action !== 'new') {
+			$o = &$this->objects[$id];
+		}
+
+		switch ($action) {
+			case 'new':
+				$this->objects[$id] = ['t' => 'fontGIDtoCIDMap', 'info' => $options];
+				break;
+
+			case 'out':
+				$res = "\n$id 0 obj\n";
+				$fontFileName = $o['info']['fontFileName'];
+				$tmp = $this->fonts[$fontFileName]['CIDtoGID'] = base64_decode($this->fonts[$fontFileName]['CIDtoGID']);
+
+				$compressed = isset($this->fonts[$fontFileName]['CIDtoGID_Compressed']) &&
+					$this->fonts[$fontFileName]['CIDtoGID_Compressed'];
+
+				if (!$compressed && isset($o['raw'])) {
+					$res .= $tmp;
+				} else {
+					$res .= "<<";
+
+					if (!$compressed && $this->compressionReady && $this->options['compression']) {
+						// then implement ZLIB based compression on this content stream
+						$compressed = true;
+						$tmp = gzcompress($tmp, 6);
+					}
+					if ($compressed) {
+						$res .= "\n/Filter /FlateDecode";
+					}
+
+					if ($this->encrypted) {
+						$this->encryptInit($id);
+						$tmp = $this->ARC4($tmp);
+					}
+
+					$res .= "\n/Length " . mb_strlen($tmp, '8bit') . ">>\nstream\n$tmp\nendstream";
+				}
+
+				$res .= "\nendobj";
+
+				return $res;
+		}
+
+		return null;
+	}
+
+	/**
+	 * the document procset, solves some problems with printing to old PS printers
+	 *
+	 * @param $id
+	 * @param $action
+	 * @param string $options
+	 * @return null|string
+	 */
+	protected function o_procset($id, $action, $options = '')
+	{
+		if ($action !== 'new') {
+			$o = &$this->objects[$id];
+		}
+
+		switch ($action) {
+			case 'new':
+				$this->objects[$id] = ['t' => 'procset', 'info' => ['PDF' => 1, 'Text' => 1]];
+				$this->o_pages($this->currentNode, 'procset', $id);
+				$this->procsetObjectId = $id;
+				break;
+
+			case 'add':
+				// this is to add new items to the procset list, despite the fact that this is considered
+				// obsolete, the items are required for printing to some postscript printers
+				switch ($options) {
+					case 'ImageB':
+					case 'ImageC':
+					case 'ImageI':
+						$o['info'][$options] = 1;
+						break;
+				}
+				break;
+
+			case 'out':
+				$res = "\n$id 0 obj\n[";
+				foreach ($o['info'] as $label => $val) {
+					$res .= "/$label ";
+				}
+				$res .= "]\nendobj";
+
+				return $res;
+		}
+
+		return null;
+	}
+
+	/**
+	 * define the document information
+	 *
+	 * @param $id
+	 * @param $action
+	 * @param string $options
+	 * @return null|string
+	 */
+	protected function o_info($id, $action, $options = '')
+	{
+		switch ($action) {
+			case 'new':
+				$this->infoObject = $id;
+				$date = 'D:' . @date('Ymd');
+				$this->objects[$id] = [
+					't'    => 'info',
+					'info' => [
+						'Producer'      => 'CPDF (dompdf)',
+						'CreationDate' => $date
+					]
+				];
+				break;
+			case 'Title':
+			case 'Author':
+			case 'Subject':
+			case 'Keywords':
+			case 'Creator':
+			case 'Producer':
+			case 'CreationDate':
+			case 'ModDate':
+			case 'Trapped':
+				$this->objects[$id]['info'][$action] = $options;
+				break;
+
+			case 'out':
+				$encrypted = $this->encrypted;
+				if ($encrypted) {
+					$this->encryptInit($id);
+				}
+
+				$res = "\n$id 0 obj\n<<\n";
+				$o = &$this->objects[$id];
+				foreach ($o['info'] as $k => $v) {
+					$res .= "/$k (";
+
+					// dates must be outputted as-is, without Unicode transformations
+					if ($k !== 'CreationDate' && $k !== 'ModDate') {
+						$v = $this->utf8toUtf16BE($v);
+					}
+
+					if ($encrypted) {
+						$v = $this->ARC4($v);
+					}
+
+					$res .= $this->filterText($v, false, false);
+					$res .= ")\n";
+				}
+
+				$res .= ">>\nendobj";
+
+				return $res;
+		}
+
+		return null;
+	}
+
+	/**
+	 * an action object, used to link to URLS initially
+	 *
+	 * @param $id
+	 * @param $action
+	 * @param string $options
+	 * @return null|string
+	 */
+	protected function o_action($id, $action, $options = '')
+	{
+		if ($action !== 'new') {
+			$o = &$this->objects[$id];
+		}
+
+		switch ($action) {
+			case 'new':
+				if (is_array($options)) {
+					$this->objects[$id] = ['t' => 'action', 'info' => $options, 'type' => $options['type']];
+				} else {
+					// then assume a URI action
+					$this->objects[$id] = ['t' => 'action', 'info' => $options, 'type' => 'URI'];
+				}
+				break;
+
+			case 'out':
+				if ($this->encrypted) {
+					$this->encryptInit($id);
+				}
+
+				$res = "\n$id 0 obj\n<< /Type /Action";
+				switch ($o['type']) {
+					case 'ilink':
+						if (!isset($this->destinations[(string)$o['info']['label']])) {
+							break;
+						}
+
+						// there will be an 'label' setting, this is the name of the destination
+						$res .= "\n/S /GoTo\n/D " . $this->destinations[(string)$o['info']['label']] . " 0 R";
+						break;
+
+					case 'URI':
+						$res .= "\n/S /URI\n/URI (";
+						if ($this->encrypted) {
+							$res .= $this->filterText($this->ARC4($o['info']), false, false);
+						} else {
+							$res .= $this->filterText($o['info'], false, false);
+						}
+
+						$res .= ")";
+						break;
+				}
+
+				$res .= "\n>>\nendobj";
+
+				return $res;
+		}
+
+		return null;
+	}
+
+	/**
+	 * an annotation object, this will add an annotation to the current page.
+	 * initially will support just link annotations
+	 *
+	 * @param $id
+	 * @param $action
+	 * @param string $options
+	 * @return null|string
+	 */
+	protected function o_annotation($id, $action, $options = '')
+	{
+		if ($action !== 'new') {
+			$o = &$this->objects[$id];
+		}
+
+		switch ($action) {
+			case 'new':
+				// add the annotation to the current page
+				$pageId = $this->currentPage;
+				$this->o_page($pageId, 'annot', $id);
+
+				// and add the action object which is going to be required
+				switch ($options['type']) {
+					case 'link':
+						$this->objects[$id] = ['t' => 'annotation', 'info' => $options];
+						$this->numObj++;
+						$this->o_action($this->numObj, 'new', $options['url']);
+						$this->objects[$id]['info']['actionId'] = $this->numObj;
+						break;
+
+					case 'ilink':
+						// this is to a named internal link
+						$label = $options['label'];
+						$this->objects[$id] = ['t' => 'annotation', 'info' => $options];
+						$this->numObj++;
+						$this->o_action($this->numObj, 'new', ['type' => 'ilink', 'label' => $label]);
+						$this->objects[$id]['info']['actionId'] = $this->numObj;
+						break;
+				}
+				break;
+
+			case 'out':
+				$res = "\n$id 0 obj\n<< /Type /Annot";
+				switch ($o['info']['type']) {
+					case 'link':
+					case 'ilink':
+						$res .= "\n/Subtype /Link";
+						break;
+				}
+				$res .= "\n/A " . $o['info']['actionId'] . " 0 R";
+				$res .= "\n/Border [0 0 0]";
+				$res .= "\n/H /I";
+				$res .= "\n/Rect [ ";
+
+				foreach ($o['info']['rect'] as $v) {
+					$res .= sprintf("%.4F ", $v);
+				}
+
+				$res .= "]";
+				$res .= "\n>>\nendobj";
+
+				return $res;
+		}
+
+		return null;
+	}
+
+	/**
+	 * a page object, it also creates a contents object to hold its contents
+	 *
+	 * @param $id
+	 * @param $action
+	 * @param string $options
+	 * @return null|string
+	 */
+	protected function o_page($id, $action, $options = '')
+	{
+		if ($action !== 'new') {
+			$o = &$this->objects[$id];
+		}
+
+		switch ($action) {
+			case 'new':
+				$this->numPages++;
+				$this->objects[$id] = [
+					't'    => 'page',
+					'info' => [
+						'parent'  => $this->currentNode,
+						'pageNum' => $this->numPages,
+						'mediaBox' => $this->objects[$this->currentNode]['info']['mediaBox']
+					]
+				];
+
+				if (is_array($options)) {
+					// then this must be a page insertion, array should contain 'rid','pos'=[before|after]
+					$options['id'] = $id;
+					$this->o_pages($this->currentNode, 'page', $options);
+				} else {
+					$this->o_pages($this->currentNode, 'page', $id);
+				}
+
+				$this->currentPage = $id;
+				//make a contents object to go with this page
+				$this->numObj++;
+				$this->o_contents($this->numObj, 'new', $id);
+				$this->currentContents = $this->numObj;
+				$this->objects[$id]['info']['contents'] = [];
+				$this->objects[$id]['info']['contents'][] = $this->numObj;
+
+				$match = ($this->numPages % 2 ? 'odd' : 'even');
+				foreach ($this->addLooseObjects as $oId => $target) {
+					if ($target === 'all' || $match === $target) {
+						$this->objects[$id]['info']['contents'][] = $oId;
+					}
+				}
+				break;
+
+			case 'content':
+				$o['info']['contents'][] = $options;
+				break;
+
+			case 'annot':
+				// add an annotation to this page
+				if (!isset($o['info']['annot'])) {
+					$o['info']['annot'] = [];
+				}
+
+				// $options should contain the id of the annotation dictionary
+				$o['info']['annot'][] = $options;
+				break;
+
+			case 'out':
+				$res = "\n$id 0 obj\n<< /Type /Page";
+				if (isset($o['info']['mediaBox'])) {
+					$tmp = $o['info']['mediaBox'];
+					$res .= "\n/MediaBox [" . sprintf(
+							'%.3F %.3F %.3F %.3F',
+							$tmp[0],
+							$tmp[1],
+							$tmp[2],
+							$tmp[3]
+						) . ']';
+				}
+				$res .= "\n/Parent " . $o['info']['parent'] . " 0 R";
+
+				if (isset($o['info']['annot'])) {
+					$res .= "\n/Annots [";
+					foreach ($o['info']['annot'] as $aId) {
+						$res .= " $aId 0 R";
+					}
+					$res .= " ]";
+				}
+
+				$count = count($o['info']['contents']);
+				if ($count == 1) {
+					$res .= "\n/Contents " . $o['info']['contents'][0] . " 0 R";
+				} else {
+					if ($count > 1) {
+						$res .= "\n/Contents [\n";
+
+						// reverse the page contents so added objects are below normal content
+						//foreach (array_reverse($o['info']['contents']) as $cId) {
+						// Back to normal now that I've got transparency working --Benj
+						foreach ($o['info']['contents'] as $cId) {
+							$res .= "$cId 0 R\n";
+						}
+						$res .= "]";
+					}
+				}
+
+				$res .= "\n>>\nendobj";
+
+				return $res;
+		}
+
+		return null;
+	}
+
+	/**
+	 * the contents objects hold all of the content which appears on pages
+	 *
+	 * @param $id
+	 * @param $action
+	 * @param string|array $options
+	 * @return null|string
+	 */
+	protected function o_contents($id, $action, $options = '')
+	{
+		if ($action !== 'new') {
+			$o = &$this->objects[$id];
+		}
+
+		switch ($action) {
+			case 'new':
+				$this->objects[$id] = ['t' => 'contents', 'c' => '', 'info' => []];
+				if (mb_strlen($options, '8bit') && intval($options)) {
+					// then this contents is the primary for a page
+					$this->objects[$id]['onPage'] = $options;
+				} else {
+					if ($options === 'raw') {
+						// then this page contains some other type of system object
+						$this->objects[$id]['raw'] = 1;
+					}
+				}
+				break;
+
+			case 'add':
+				// add more options to the declaration
+				foreach ($options as $k => $v) {
+					$o['info'][$k] = $v;
+				}
+
+			case 'out':
+				$tmp = $o['c'];
+				$res = "\n$id 0 obj\n";
+
+				if (isset($this->objects[$id]['raw'])) {
+					$res .= $tmp;
+				} else {
+					$res .= "<<";
+					if ($this->compressionReady && $this->options['compression']) {
+						// then implement ZLIB based compression on this content stream
+						$res .= " /Filter /FlateDecode";
+						$tmp = gzcompress($tmp, 6);
+					}
+
+					if ($this->encrypted) {
+						$this->encryptInit($id);
+						$tmp = $this->ARC4($tmp);
+					}
+
+					foreach ($o['info'] as $k => $v) {
+						$res .= "\n/$k $v";
+					}
+
+					$res .= "\n/Length " . mb_strlen($tmp, '8bit') . " >>\nstream\n$tmp\nendstream";
+				}
+
+				$res .= "\nendobj";
+
+				return $res;
+		}
+
+		return null;
+	}
+
+	/**
+	 * @param $id
+	 * @param $action
+	 * @return string|null
+	 */
+	protected function o_embedjs($id, $action)
+	{
+		switch ($action) {
+			case 'new':
+				$this->objects[$id] = [
+					't'    => 'embedjs',
+					'info' => [
+						'Names' => '[(EmbeddedJS) ' . ($id + 1) . ' 0 R]'
+					]
+				];
+				break;
+
+			case 'out':
+				$o = &$this->objects[$id];
+				$res = "\n$id 0 obj\n<< ";
+				foreach ($o['info'] as $k => $v) {
+					$res .= "\n/$k $v";
+				}
+				$res .= "\n>>\nendobj";
+
+				return $res;
+		}
+
+		return null;
+	}
+
+	/**
+	 * @param $id
+	 * @param $action
+	 * @param string $code
+	 * @return null|string
+	 */
+	protected function o_javascript($id, $action, $code = '')
+	{
+		switch ($action) {
+			case 'new':
+				$this->objects[$id] = [
+					't'    => 'javascript',
+					'info' => [
+						'S'  => '/JavaScript',
+						'JS' => '(' . $this->filterText($code, true, false) . ')',
+					]
+				];
+				break;
+
+			case 'out':
+				$o = &$this->objects[$id];
+				$res = "\n$id 0 obj\n<< ";
+
+				foreach ($o['info'] as $k => $v) {
+					$res .= "\n/$k $v";
+				}
+				$res .= "\n>>\nendobj";
+
+				return $res;
+		}
+
+		return null;
+	}
+
+	/**
+	 * an image object, will be an XObject in the document, includes description and data
+	 *
+	 * @param $id
+	 * @param $action
+	 * @param string $options
+	 * @return null|string
+	 */
+	protected function o_image($id, $action, $options = '')
+	{
+		switch ($action) {
+			case 'new':
+				// make the new object
+				$this->objects[$id] = ['t' => 'image', 'data' => &$options['data'], 'info' => []];
+
+				$info =& $this->objects[$id]['info'];
+
+				$info['Type'] = '/XObject';
+				$info['Subtype'] = '/Image';
+				$info['Width'] = $options['iw'];
+				$info['Height'] = $options['ih'];
+
+				if (isset($options['masked']) && $options['masked']) {
+					$info['SMask'] = ($this->numObj - 1) . ' 0 R';
+				}
+
+				if (!isset($options['type']) || $options['type'] === 'jpg') {
+					if (!isset($options['channels'])) {
+						$options['channels'] = 3;
+					}
+
+					switch ($options['channels']) {
+						case 1:
+							$info['ColorSpace'] = '/DeviceGray';
+							break;
+						case 4:
+							$info['ColorSpace'] = '/DeviceCMYK';
+							break;
+						default:
+							$info['ColorSpace'] = '/DeviceRGB';
+							break;
+					}
+
+					if ($info['ColorSpace'] === '/DeviceCMYK') {
+						$info['Decode'] = '[1 0 1 0 1 0 1 0]';
+					}
+
+					$info['Filter'] = '/DCTDecode';
+					$info['BitsPerComponent'] = 8;
+				} else {
+					if ($options['type'] === 'png') {
+						$info['Filter'] = '/FlateDecode';
+						$info['DecodeParms'] = '<< /Predictor 15 /Colors ' . $options['ncolor'] . ' /Columns ' . $options['iw'] . ' /BitsPerComponent ' . $options['bitsPerComponent'] . '>>';
+
+						if ($options['isMask']) {
+							$info['ColorSpace'] = '/DeviceGray';
+						} else {
+							if (mb_strlen($options['pdata'], '8bit')) {
+								$tmp = ' [ /Indexed /DeviceRGB ' . (mb_strlen($options['pdata'], '8bit') / 3 - 1) . ' ';
+								$this->numObj++;
+								$this->o_contents($this->numObj, 'new');
+								$this->objects[$this->numObj]['c'] = $options['pdata'];
+								$tmp .= $this->numObj . ' 0 R';
+								$tmp .= ' ]';
+								$info['ColorSpace'] = $tmp;
+
+								if (isset($options['transparency'])) {
+									$transparency = $options['transparency'];
+									switch ($transparency['type']) {
+										case 'indexed':
+											$tmp = ' [ ' . $transparency['data'] . ' ' . $transparency['data'] . '] ';
+											$info['Mask'] = $tmp;
+											break;
+
+										case 'color-key':
+											$tmp = ' [ ' .
+												$transparency['r'] . ' ' . $transparency['r'] .
+												$transparency['g'] . ' ' . $transparency['g'] .
+												$transparency['b'] . ' ' . $transparency['b'] .
+												' ] ';
+											$info['Mask'] = $tmp;
+											break;
+									}
+								}
+							} else {
+								if (isset($options['transparency'])) {
+									$transparency = $options['transparency'];
+
+									switch ($transparency['type']) {
+										case 'indexed':
+											$tmp = ' [ ' . $transparency['data'] . ' ' . $transparency['data'] . '] ';
+											$info['Mask'] = $tmp;
+											break;
+
+										case 'color-key':
+											$tmp = ' [ ' .
+												$transparency['r'] . ' ' . $transparency['r'] . ' ' .
+												$transparency['g'] . ' ' . $transparency['g'] . ' ' .
+												$transparency['b'] . ' ' . $transparency['b'] .
+												' ] ';
+											$info['Mask'] = $tmp;
+											break;
+									}
+								}
+								$info['ColorSpace'] = '/' . $options['color'];
+							}
+						}
+
+						$info['BitsPerComponent'] = $options['bitsPerComponent'];
+					}
+				}
+
+				// assign it a place in the named resource dictionary as an external object, according to
+				// the label passed in with it.
+				$this->o_pages($this->currentNode, 'xObject', ['label' => $options['label'], 'objNum' => $id]);
+
+				// also make sure that we have the right procset object for it.
+				$this->o_procset($this->procsetObjectId, 'add', 'ImageC');
+				break;
+
+			case 'out':
+				$o = &$this->objects[$id];
+				$tmp = &$o['data'];
+				$res = "\n$id 0 obj\n<<";
+
+				foreach ($o['info'] as $k => $v) {
+					$res .= "\n/$k $v";
+				}
+
+				if ($this->encrypted) {
+					$this->encryptInit($id);
+					$tmp = $this->ARC4($tmp);
+				}
+
+				$res .= "\n/Length " . mb_strlen($tmp, '8bit') . ">>\nstream\n$tmp\nendstream\nendobj";
+
+				return $res;
+		}
+
+		return null;
+	}
+
+	/**
+	 * graphics state object
+	 *
+	 * @param $id
+	 * @param $action
+	 * @param string $options
+	 * @return null|string
+	 */
+	protected function o_extGState($id, $action, $options = "")
+	{
+		static $valid_params = [
+			"LW",
+			"LC",
+			"LC",
+			"LJ",
+			"ML",
+			"D",
+			"RI",
+			"OP",
+			"op",
+			"OPM",
+			"Font",
+			"BG",
+			"BG2",
+			"UCR",
+			"TR",
+			"TR2",
+			"HT",
+			"FL",
+			"SM",
+			"SA",
+			"BM",
+			"SMask",
+			"CA",
+			"ca",
+			"AIS",
+			"TK"
+		];
+
+		switch ($action) {
+			case "new":
+				$this->objects[$id] = ['t' => 'extGState', 'info' => $options];
+
+				// Tell the pages about the new resource
+				$this->numStates++;
+				$this->o_pages($this->currentNode, 'extGState', ["objNum" => $id, "stateNum" => $this->numStates]);
+				break;
+
+			case "out":
+				$o = &$this->objects[$id];
+				$res = "\n$id 0 obj\n<< /Type /ExtGState\n";
+
+				foreach ($o["info"] as $k => $v) {
+					if (!in_array($k, $valid_params)) {
+						continue;
+					}
+					$res .= "/$k $v\n";
+				}
+
+				$res .= ">>\nendobj";
+
+				return $res;
+		}
+
+		return null;
+	}
+
+	/**
+	 * @param integer $id
+	 * @param string $action
+	 * @param mixed $options
+	 * @return string
+	 */
+	protected function o_xobject($id, $action, $options = '')
+	{
+		switch ($action) {
+			case 'new':
+				$this->objects[$id] = ['t' => 'xobject', 'info' => $options, 'c' => ''];
+				break;
+
+			case 'procset':
+				$this->objects[$id]['procset'] = $options;
+				break;
+
+			case 'font':
+				$this->objects[$id]['fonts'][$options['fontNum']] = [
+				  'objNum' => $options['objNum'],
+				  'fontNum' => $options['fontNum']
+				];
+				break;
+
+			case 'xObject':
+				$this->objects[$id]['xObjects'][] = ['objNum' => $options['objNum'], 'label' => $options['label']];
+				break;
+
+			case 'out':
+				$o = &$this->objects[$id];
+				$res = "\n$id 0 obj\n<< /Type /XObject\n";
+
+				foreach ($o["info"] as $k => $v) {
+					switch ($k) {
+						case 'Subtype':
+							$res .= "/Subtype /$v\n";
+							break;
+						case 'bbox':
+							$res .= "/BBox [";
+							foreach ($v as $value) {
+								$res .= sprintf("%.4F ", $value);
+							}
+							$res .= "]\n";
+							break;
+						default:
+							$res .= "/$k $v\n";
+							break;
+					}
+				}
+				$res .= "/Matrix[1.0 0.0 0.0 1.0 0.0 0.0]\n";
+
+				$res .= "/Resources <<";
+				if (isset($o['procset'])) {
+					$res .= "\n/ProcSet " . $o['procset'] . " 0 R";
+				} else {
+					$res .= "\n/ProcSet [/PDF /Text /ImageB /ImageC /ImageI]";
+				}
+				if (isset($o['fonts']) && count($o['fonts'])) {
+					$res .= "\n/Font << ";
+					foreach ($o['fonts'] as $finfo) {
+						$res .= "\n/F" . $finfo['fontNum'] . " " . $finfo['objNum'] . " 0 R";
+					}
+					$res .= "\n>>";
+				}
+				if (isset($o['xObjects']) && count($o['xObjects'])) {
+					$res .= "\n/XObject << ";
+					foreach ($o['xObjects'] as $finfo) {
+						$res .= "\n/" . $finfo['label'] . " " . $finfo['objNum'] . " 0 R";
+					}
+					$res .= "\n>>";
+				}
+				$res .= "\n>>\n";
+
+				$tmp = $o["c"];
+				if ($this->compressionReady && $this->options['compression']) {
+					// then implement ZLIB based compression on this content stream
+					$res .= " /Filter /FlateDecode\n";
+					$tmp = gzcompress($tmp, 6);
+				}
+
+				if ($this->encrypted) {
+					$this->encryptInit($id);
+					$tmp = $this->ARC4($tmp);
+				}
+
+				$res .= "/Length " . mb_strlen($tmp, '8bit') . " >>\n";
+				$res .= "stream\n" . $tmp . "\nendstream" . "\nendobj";
+
+				return $res;
+		}
+
+		return null;
+	}
+
+	/**
+	 * @param $id
+	 * @param $action
+	 * @param string $options
+	 * @return null|string
+	 */
+	protected function o_acroform($id, $action, $options = '')
+	{
+		switch ($action) {
+			case "new":
+				$this->o_catalog($this->catalogId, 'acroform', $id);
+				$this->objects[$id] = array('t' => 'acroform', 'info' => $options);
+				break;
+
+			case 'addfield':
+				$this->objects[$id]['info']['Fields'][] = $options;
+				break;
+
+			case 'font':
+				$this->objects[$id]['fonts'][$options['fontNum']] = [
+				  'objNum' => $options['objNum'],
+				  'fontNum' => $options['fontNum']
+				];
+				break;
+
+			case "out":
+				$o = &$this->objects[$id];
+				$res = "\n$id 0 obj\n<<";
+
+				foreach ($o["info"] as $k => $v) {
+					switch ($k) {
+						case 'Fields':
+							$res .= " /Fields [";
+							foreach ($v as $i) {
+								$res .= "$i 0 R ";
+							}
+							$res .= "]\n";
+							break;
+						default:
+							$res .= "/$k $v\n";
+					}
+				}
+
+				$res .= "/DR <<\n";
+				if (isset($o['fonts']) && count($o['fonts'])) {
+					$res .= "/Font << \n";
+					foreach ($o['fonts'] as $finfo) {
+						$res .= "/F" . $finfo['fontNum'] . " " . $finfo['objNum'] . " 0 R\n";
+					}
+					$res .= ">>\n";
+				}
+				$res .= ">>\n";
+
+				$res .= ">>\nendobj";
+
+				return $res;
+		}
+
+		return null;
+	}
+
+	/**
+	 * @param $id
+	 * @param $action
+	 * @param mixed $options
+	 * @return null|string
+	 */
+	protected function o_field($id, $action, $options = '')
+	{
+		switch ($action) {
+			case "new":
+				$this->o_page($options['pageid'], 'annot', $id);
+				$this->o_acroform($this->acroFormId, 'addfield', $id);
+				$this->objects[$id] = ['t' => 'field', 'info' => $options];
+				break;
+
+			case 'set':
+				$this->objects[$id]['info'] = array_merge($this->objects[$id]['info'], $options);
+				break;
+
+			case "out":
+				$o = &$this->objects[$id];
+				$res = "\n$id 0 obj\n<< /Type /Annot /Subtype /Widget \n";
+
+				$encrypted = $this->encrypted;
+				if ($encrypted) {
+					$this->encryptInit($id);
+				}
+
+				foreach ($o["info"] as $k => $v) {
+					switch ($k) {
+						case 'pageid':
+							$res .= "/P $v 0 R\n";
+							break;
+						case 'value':
+							if ($encrypted) {
+								$v = $this->filterText($this->ARC4($v), false, false);
+							}
+							$res .= "/V ($v)\n";
+							break;
+						case 'refvalue':
+							$res .= "/V $v 0 R\n";
+							break;
+						case 'da':
+							if ($encrypted) {
+								$v = $this->filterText($this->ARC4($v), false, false);
+							}
+							$res .= "/DA ($v)\n";
+							break;
+						case 'options':
+							$res .= "/Opt [\n";
+							foreach ($v as $opt) {
+								if ($encrypted) {
+									$opt = $this->filterText($this->ARC4($opt), false, false);
+								}
+								$res .= "($opt)\n";
+							}
+							$res .= "]\n";
+							break;
+						case 'rect':
+							$res .= "/Rect [";
+							foreach ($v as $value) {
+								$res .= sprintf("%.4F ", $value);
+							}
+							$res .= "]\n";
+							break;
+						case 'appearance':
+							$res .= "/AP << ";
+							foreach ($v as $a => $ref) {
+								$res .= "/$a $ref 0 R ";
+							}
+							$res .= ">>\n";
+							break;
+						case 'T':
+							if ($encrypted) {
+								$v = $this->filterText($this->ARC4($v), false, false);
+							}
+							$res .= "/T ($v)\n";
+							break;
+						default:
+							$res .= "/$k $v\n";
+					}
+
+				}
+
+				$res .= ">>\nendobj";
+
+				return $res;
+		}
+
+		return null;
+	}
+
+	/**
+	 *
+	 * @param $id
+	 * @param $action
+	 * @param string $options
+	 * @return null|string
+	 */
+	protected function o_sig($id, $action, $options = '')
+	{
+		$sign_maxlen = $this->signatureMaxLen;
+
+		switch ($action) {
+			case "new":
+				$this->objects[$id] = array('t' => 'sig', 'info' => $options);
+				$this->byteRange[$id] = ['t' => 'sig'];
+				break;
+
+			case 'byterange':
+				$o = &$this->objects[$id];
+				$content =& $options['content'];
+				$content_len = strlen($content);
+				$pos = strpos($content, sprintf("/ByteRange [ %'.010d", $id));
+				$len = strlen('/ByteRange [ ********** ********** ********** ********** ]');
+				$rangeStartPos = $pos + $len + 1 + 10; // before '<'
+				$content = substr_replace($content, str_pad(sprintf('/ByteRange [ 0 %u %u %u ]', $rangeStartPos, $rangeStartPos + $sign_maxlen + 2, $content_len - 2 - $sign_maxlen - $rangeStartPos), $len, ' ', STR_PAD_RIGHT), $pos, $len);
+
+				$fuid = uniqid();
+				$tmpInput = $this->tmp . "/pkcs7.tmp." . $fuid . '.in';
+				$tmpOutput = $this->tmp . "/pkcs7.tmp." . $fuid . '.out';
+
+				if (file_put_contents($tmpInput, substr($content, 0, $rangeStartPos)) === false) {
+					throw new \Exception("Unable to write temporary file for signing.");
+				}
+				if (file_put_contents($tmpInput, substr($content, $rangeStartPos + 2 + $sign_maxlen),
+					FILE_APPEND) === false) {
+					throw new \Exception("Unable to write temporary file for signing.");
+				}
+
+				if (openssl_pkcs7_sign($tmpInput, $tmpOutput,
+					$o['info']['SignCert'],
+					array($o['info']['PrivKey'], $o['info']['Password']),
+					array(), PKCS7_BINARY | PKCS7_DETACHED) === false) {
+					throw new \Exception("Failed to prepare signature.");
+				}
+
+				$signature = file_get_contents($tmpOutput);
+
+				unlink($tmpInput);
+				unlink($tmpOutput);
+
+				$sign = substr($signature, (strpos($signature, "%%EOF\n\n------") + 13));
+				list($head, $signature) = explode("\n\n", $sign);
+
+				$signature = base64_decode(trim($signature));
+
+				$signature = current(unpack('H*', $signature));
+				$signature = str_pad($signature, $sign_maxlen, '0');
+				$siglen = strlen($signature);
+				if (strlen($signature) > $sign_maxlen) {
+					throw new \Exception("Signature length ($siglen) exceeds the $sign_maxlen limit.");
+				}
+
+				$content = substr_replace($content, $signature, $rangeStartPos + 1, $sign_maxlen);
+				break;
+
+			case "out":
+				$res = "\n$id 0 obj\n<<\n";
+
+				$encrypted = $this->encrypted;
+				if ($encrypted) {
+					$this->encryptInit($id);
+				}
+
+				$res .= "/ByteRange " .sprintf("[ %'.010d ********** ********** ********** ]\n", $id);
+				$res .= "/Contents <" . str_pad('', $sign_maxlen, '0') . ">\n";
+				$res .= "/Filter/Adobe.PPKLite\n"; //PPKMS \n";
+				$res .= "/Type/Sig/SubFilter/adbe.pkcs7.detached \n";
+
+				$date = "D:" . substr_replace(date('YmdHisO'), '\'', -2, 0) . '\'';
+				if ($encrypted) {
+					$date = $this->ARC4($date);
+				}
+
+				$res .= "/M ($date)\n";
+				$res .= "/Prop_Build << /App << /Name /DomPDF >> /Filter << /Name /Adobe.PPKLite >> >>\n";
+
+				$o = &$this->objects[$id];
+				foreach ($o['info'] as $k => $v) {
+					switch ($k) {
+						case 'Name':
+						case 'Location':
+						case 'Reason':
+						case 'ContactInfo':
+							if ($v !== null && $v !== '') {
+								$res .= "/$k (" .
+								  ($encrypted ? $this->filterText($this->ARC4($v), false, false) : $v) . ") \n";
+							}
+							break;
+					}
+				}
+				$res .= ">>\nendobj";
+
+				return $res;
+		}
+
+		return null;
+	}
+
+	/**
+	 * encryption object.
+	 *
+	 * @param $id
+	 * @param $action
+	 * @param string $options
+	 * @return string|null
+	 */
+	protected function o_encryption($id, $action, $options = '')
+	{
+		switch ($action) {
+			case 'new':
+				// make the new object
+				$this->objects[$id] = ['t' => 'encryption', 'info' => $options];
+				$this->arc4_objnum = $id;
+				break;
+
+			case 'keys':
+				// figure out the additional parameters required
+				$pad = chr(0x28) . chr(0xBF) . chr(0x4E) . chr(0x5E) . chr(0x4E) . chr(0x75) . chr(0x8A) . chr(0x41)
+					. chr(0x64) . chr(0x00) . chr(0x4E) . chr(0x56) . chr(0xFF) . chr(0xFA) . chr(0x01) . chr(0x08)
+					. chr(0x2E) . chr(0x2E) . chr(0x00) . chr(0xB6) . chr(0xD0) . chr(0x68) . chr(0x3E) . chr(0x80)
+					. chr(0x2F) . chr(0x0C) . chr(0xA9) . chr(0xFE) . chr(0x64) . chr(0x53) . chr(0x69) . chr(0x7A);
+
+				$info = $this->objects[$id]['info'];
+
+				$len = mb_strlen($info['owner'], '8bit');
+
+				if ($len > 32) {
+					$owner = substr($info['owner'], 0, 32);
+				} else {
+					if ($len < 32) {
+						$owner = $info['owner'] . substr($pad, 0, 32 - $len);
+					} else {
+						$owner = $info['owner'];
+					}
+				}
+
+				$len = mb_strlen($info['user'], '8bit');
+				if ($len > 32) {
+					$user = substr($info['user'], 0, 32);
+				} else {
+					if ($len < 32) {
+						$user = $info['user'] . substr($pad, 0, 32 - $len);
+					} else {
+						$user = $info['user'];
+					}
+				}
+
+				$tmp = $this->md5_16($owner);
+				$okey = substr($tmp, 0, 5);
+				$this->ARC4_init($okey);
+				$ovalue = $this->ARC4($user);
+				$this->objects[$id]['info']['O'] = $ovalue;
+
+				// now make the u value, phew.
+				$tmp = $this->md5_16(
+					$user . $ovalue . chr($info['p']) . chr(255) . chr(255) . chr(255) . hex2bin($this->fileIdentifier)
+				);
+
+				$ukey = substr($tmp, 0, 5);
+				$this->ARC4_init($ukey);
+				$this->encryptionKey = $ukey;
+				$this->encrypted = true;
+				$uvalue = $this->ARC4($pad);
+				$this->objects[$id]['info']['U'] = $uvalue;
+				// initialize the arc4 array
+				break;
+
+			case 'out':
+				$o = &$this->objects[$id];
+
+				$res = "\n$id 0 obj\n<<";
+				$res .= "\n/Filter /Standard";
+				$res .= "\n/V 1";
+				$res .= "\n/R 2";
+				$res .= "\n/O (" . $this->filterText($o['info']['O'], false, false) . ')';
+				$res .= "\n/U (" . $this->filterText($o['info']['U'], false, false) . ')';
+				// and the p-value needs to be converted to account for the twos-complement approach
+				$o['info']['p'] = (($o['info']['p'] ^ 255) + 1) * -1;
+				$res .= "\n/P " . ($o['info']['p']);
+				$res .= "\n>>\nendobj";
+
+				return $res;
+		}
+
+		return null;
+	}
+
+	protected function o_indirect_references($id, $action, $options = null)
+	{
+		switch ($action) {
+			case 'new':
+			case 'add':
+				if ($id === 0) {
+					$id = ++$this->numObj;
+					$this->o_catalog($this->catalogId, 'names', $id);
+					$this->objects[$id] = ['t' => 'indirect_references', 'info' => $options];
+					$this->indirectReferenceId = $id;
+				} else {
+					$this->objects[$id]['info'] = array_merge($this->objects[$id]['info'], $options);
+				}
+				break;
+			case 'out':
+				$res = "\n$id 0 obj << ";
+
+				foreach ($this->objects[$id]['info'] as $referenceObjName => $referenceObjId) {
+					$res .= "/$referenceObjName $referenceObjId 0 R ";
+				}
+
+				$res .= ">> endobj";
+				return $res;
+		}
+
+		return null;
+	}
+
+	protected function o_names($id, $action, $options = null)
+	{
+		switch ($action) {
+			case 'new':
+			case 'add':
+				if ($id === 0) {
+					$id = ++$this->numObj;
+					$this->objects[$id] = ['t' => 'names', 'info' => [$options]];
+					$this->o_indirect_references($this->indirectReferenceId, 'add', ['EmbeddedFiles' => $id]);
+					$this->embeddedFilesId = $id;
+				} else {
+					$this->objects[$id]['info'][] = $options;
+				}
+				break;
+			case 'out':
+				$info = &$this->objects[$id]['info'];
+				$res = '';
+				if (count($info) > 0) {
+					$res = "\n$id 0 obj << /Names [ ";
+
+					if ($this->encrypted) {
+						$this->encryptInit($id);
+					}
+
+					foreach ($info as $entry) {
+						if ($this->encrypted) {
+							$filename = $this->ARC4($entry['filename']);
+						} else {
+							$filename = $entry['filename'];
+						}
+
+						$res .= "($filename) " . $entry['dict_reference'] . " 0 R ";
+					}
+
+					$res .= "] >> endobj";
+				}
+				return $res;
+		}
+
+		return null;
+	}
+
+	protected function o_embedded_file_dictionary($id, $action, $options = null)
+	{
+		switch ($action) {
+			case 'new':
+				$embeddedFileId = ++$this->numObj;
+				$options['embedded_reference'] = $embeddedFileId;
+				$this->objects[$id] = ['t' => 'embedded_file_dictionary', 'info' => $options];
+				$this->o_embedded_file($embeddedFileId, 'new', $options);
+				$options['dict_reference'] = $id;
+				$this->o_names($this->embeddedFilesId, 'add', $options);
+				break;
+			case 'out':
+				$info = &$this->objects[$id]['info'];
+				$filename = $this->utf8toUtf16BE($info['filename']);
+				$description = $this->utf8toUtf16BE($info['description']);
+
+				if ($this->encrypted) {
+					$this->encryptInit($id);
+					$filename = $this->ARC4($filename);
+					$description = $this->ARC4($description);
+				}
+
+				$filename = $this->filterText($filename, false, false);
+				$description = $this->filterText($description, false, false);
+
+				$res = "\n$id 0 obj <</Type /Filespec /EF";
+				$res .= " <</F " . $info['embedded_reference'] . " 0 R >>";
+				$res .= " /F ($filename) /UF ($filename) /Desc ($description)";
+				$res .= " >> endobj";
+				return $res;
+		}
+
+		return null;
+	}
+
+	protected function o_embedded_file($id, $action, $options = null): ?string
+	{
+		switch ($action) {
+			case 'new':
+				$this->objects[$id] = ['t' => 'embedded_file', 'info' => $options];
+				break;
+			case 'out':
+				$info = &$this->objects[$id]['info'];
+
+				if ($this->compressionReady) {
+					$filepath = $info['filepath'];
+					$checksum = md5_file($filepath);
+					$f = fopen($filepath, "rb");
+
+					$file_content_compressed = '';
+					$deflateContext = deflate_init(ZLIB_ENCODING_DEFLATE, ['level' => 6]);
+					while (($block = fread($f, 8192))) {
+						$file_content_compressed .= deflate_add($deflateContext, $block, ZLIB_NO_FLUSH);
+					}
+					$file_content_compressed .= deflate_add($deflateContext, '', ZLIB_FINISH);
+					$file_size_uncompressed = ftell($f);
+					fclose($f);
+				} else {
+					$file_content = file_get_contents($info['filepath']);
+					$file_size_uncompressed = mb_strlen($file_content, '8bit');
+					$checksum = md5($file_content);
+				}
+
+				if ($this->encrypted) {
+					$this->encryptInit($id);
+					$checksum = $this->ARC4($checksum);
+					$file_content_compressed = $this->ARC4($file_content_compressed);
+				}
+				$file_size_compressed = mb_strlen($file_content_compressed, '8bit');
+
+				$res = "\n$id 0 obj <</Params <</Size $file_size_uncompressed /CheckSum ($checksum) >>" .
+					" /Type/EmbeddedFile /Filter/FlateDecode" .
+					" /Length $file_size_compressed >> stream\n$file_content_compressed\nendstream\nendobj";
+
+				return $res;
+		}
+
+		return null;
+	}
+
+	/**
+	 * ARC4 functions
+	 * A series of function to implement ARC4 encoding in PHP
+	 */
+
+	/**
+	 * calculate the 16 byte version of the 128 bit md5 digest of the string
+	 *
+	 * @param $string
+	 * @return string
+	 */
+	function md5_16($string)
+	{
+		$tmp = md5($string);
+		$out = '';
+		for ($i = 0; $i <= 30; $i = $i + 2) {
+			$out .= chr(hexdec(substr($tmp, $i, 2)));
+		}
+
+		return $out;
+	}
+
+	/**
+	 * initialize the encryption for processing a particular object
+	 *
+	 * @param $id
+	 */
+	function encryptInit($id)
+	{
+		$tmp = $this->encryptionKey;
+		$hex = dechex($id);
+		if (mb_strlen($hex, '8bit') < 6) {
+			$hex = substr('000000', 0, 6 - mb_strlen($hex, '8bit')) . $hex;
+		}
+		$tmp .= chr(hexdec(substr($hex, 4, 2)))
+			. chr(hexdec(substr($hex, 2, 2)))
+			. chr(hexdec(substr($hex, 0, 2)))
+			. chr(0)
+			. chr(0)
+		;
+		$key = $this->md5_16($tmp);
+		$this->ARC4_init(substr($key, 0, 10));
+	}
+
+	/**
+	 * initialize the ARC4 encryption
+	 *
+	 * @param string $key
+	 */
+	function ARC4_init($key = '')
+	{
+		$this->arc4 = '';
+
+		// setup the control array
+		if (mb_strlen($key, '8bit') == 0) {
+			return;
+		}
+
+		$k = '';
+		while (mb_strlen($k, '8bit') < 256) {
+			$k .= $key;
+		}
+
+		$k = substr($k, 0, 256);
+		for ($i = 0; $i < 256; $i++) {
+			$this->arc4 .= chr($i);
+		}
+
+		$j = 0;
+
+		for ($i = 0; $i < 256; $i++) {
+			$t = $this->arc4[$i];
+			$j = ($j + ord($t) + ord($k[$i])) % 256;
+			$this->arc4[$i] = $this->arc4[$j];
+			$this->arc4[$j] = $t;
+		}
+	}
+
+	/**
+	 * ARC4 encrypt a text string
+	 *
+	 * @param $text
+	 * @return string
+	 */
+	function ARC4($text)
+	{
+		$len = mb_strlen($text, '8bit');
+		$a = 0;
+		$b = 0;
+		$c = $this->arc4;
+		$out = '';
+		for ($i = 0; $i < $len; $i++) {
+			$a = ($a + 1) % 256;
+			$t = $c[$a];
+			$b = ($b + ord($t)) % 256;
+			$c[$a] = $c[$b];
+			$c[$b] = $t;
+			$k = ord($c[(ord($c[$a]) + ord($c[$b])) % 256]);
+			$out .= chr(ord($text[$i]) ^ $k);
+		}
+
+		return $out;
+	}
+
+	/**
+	 * functions which can be called to adjust or add to the document
+	 */
+
+	/**
+	 * add a link in the document to an external URL
+	 *
+	 * @param $url
+	 * @param $x0
+	 * @param $y0
+	 * @param $x1
+	 * @param $y1
+	 */
+	function addLink($url, $x0, $y0, $x1, $y1)
+	{
+		$this->numObj++;
+		$info = ['type' => 'link', 'url' => $url, 'rect' => [$x0, $y0, $x1, $y1]];
+		$this->o_annotation($this->numObj, 'new', $info);
+	}
+
+	/**
+	 * add a link in the document to an internal destination (ie. within the document)
+	 *
+	 * @param $label
+	 * @param $x0
+	 * @param $y0
+	 * @param $x1
+	 * @param $y1
+	 */
+	function addInternalLink($label, $x0, $y0, $x1, $y1)
+	{
+		$this->numObj++;
+		$info = ['type' => 'ilink', 'label' => $label, 'rect' => [$x0, $y0, $x1, $y1]];
+		$this->o_annotation($this->numObj, 'new', $info);
+	}
+
+	/**
+	 * set the encryption of the document
+	 * can be used to turn it on and/or set the passwords which it will have.
+	 * also the functions that the user will have are set here, such as print, modify, add
+	 *
+	 * @param string $userPass
+	 * @param string $ownerPass
+	 * @param array $pc
+	 */
+	function setEncryption($userPass = '', $ownerPass = '', $pc = [])
+	{
+		$p = bindec("11000000");
+
+		$options = ['print' => 4, 'modify' => 8, 'copy' => 16, 'add' => 32];
+
+		foreach ($pc as $k => $v) {
+			if ($v && isset($options[$k])) {
+				$p += $options[$k];
+			} else {
+				if (isset($options[$v])) {
+					$p += $options[$v];
+				}
+			}
+		}
+
+		// implement encryption on the document
+		if ($this->arc4_objnum == 0) {
+			// then the block does not exist already, add it.
+			$this->numObj++;
+			if (mb_strlen($ownerPass) == 0) {
+				$ownerPass = $userPass;
+			}
+
+			$this->o_encryption($this->numObj, 'new', ['user' => $userPass, 'owner' => $ownerPass, 'p' => $p]);
+		}
+	}
+
+	/**
+	 * should be used for internal checks, not implemented as yet
+	 */
+	function checkAllHere()
+	{
+	}
+
+	/**
+	 * return the pdf stream as a string returned from the function
+	 *
+	 * @param bool $debug
+	 * @return string
+	 */
+	function output($debug = false)
+	{
+		if ($debug) {
+			// turn compression off
+			$this->options['compression'] = false;
+		}
+
+		if ($this->javascript) {
+			$this->numObj++;
+
+			$js_id = $this->numObj;
+			$this->o_embedjs($js_id, 'new');
+			$this->o_javascript(++$this->numObj, 'new', $this->javascript);
+
+			$id = $this->catalogId;
+
+			$this->o_indirect_references($this->indirectReferenceId, 'add', ['JavaScript' => $js_id]);
+		}
+
+		if ($this->fileIdentifier === '') {
+			$tmp = implode('', $this->objects[$this->infoObject]['info']);
+			$this->fileIdentifier = md5('DOMPDF' . __FILE__ . $tmp . microtime() . mt_rand());
+		}
+
+		if ($this->arc4_objnum) {
+			$this->o_encryption($this->arc4_objnum, 'keys');
+			$this->ARC4_init($this->encryptionKey);
+		}
+
+		$this->checkAllHere();
+
+		$xref = [];
+		$content = '%PDF-' . self::PDF_VERSION;
+		$pos = mb_strlen($content, '8bit');
+
+		// pre-process o_font objects before output of all objects
+		foreach ($this->objects as $k => $v) {
+			if ($v['t'] === 'font') {
+				$this->o_font($k, 'add');
+			}
+		}
+
+		foreach ($this->objects as $k => $v) {
+			$tmp = 'o_' . $v['t'];
+			$cont = $this->$tmp($k, 'out');
+			$content .= $cont;
+			$xref[] = $pos + 1; //+1 to account for \n at the start of each object
+			$pos += mb_strlen($cont, '8bit');
+		}
+
+		$content .= "\nxref\n0 " . (count($xref) + 1) . "\n0000000000 65535 f \n";
+
+		foreach ($xref as $p) {
+			$content .= str_pad($p, 10, "0", STR_PAD_LEFT) . " 00000 n \n";
+		}
+
+		$content .= "trailer\n<<\n" .
+			'/Size ' . (count($xref) + 1) . "\n" .
+			'/Root 1 0 R' . "\n" .
+			'/Info ' . $this->infoObject . " 0 R\n"
+		;
+
+		// if encryption has been applied to this document then add the marker for this dictionary
+		if ($this->arc4_objnum > 0) {
+			$content .= '/Encrypt ' . $this->arc4_objnum . " 0 R\n";
+		}
+
+		$content .= '/ID[<' . $this->fileIdentifier . '><' . $this->fileIdentifier . ">]\n";
+
+		// account for \n added at start of xref table
+		$pos++;
+
+		$content .= ">>\nstartxref\n$pos\n%%EOF\n";
+
+		if (count($this->byteRange) > 0) {
+			foreach ($this->byteRange as $k => $v) {
+				$tmp = 'o_' . $v['t'];
+				$this->$tmp($k, 'byterange', ['content' => &$content]);
+			}
+		}
+
+		return $content;
+	}
+
+	/**
+	 * initialize a new document
+	 * if this is called on an existing document results may be unpredictable, but the existing document would be lost at minimum
+	 * this function is called automatically by the constructor function
+	 *
+	 * @param array $pageSize
+	 */
+	private function newDocument($pageSize = [0, 0, 612, 792])
+	{
+		$this->numObj = 0;
+		$this->objects = [];
+
+		$this->numObj++;
+		$this->o_catalog($this->numObj, 'new');
+
+		$this->numObj++;
+		$this->o_outlines($this->numObj, 'new');
+
+		$this->numObj++;
+		$this->o_pages($this->numObj, 'new');
+
+		$this->o_pages($this->numObj, 'mediaBox', $pageSize);
+		$this->currentNode = 3;
+
+		$this->numObj++;
+		$this->o_procset($this->numObj, 'new');
+
+		$this->numObj++;
+		$this->o_info($this->numObj, 'new');
+
+		$this->numObj++;
+		$this->o_page($this->numObj, 'new');
+
+		// need to store the first page id as there is no way to get it to the user during
+		// startup
+		$this->firstPageId = $this->currentContents;
+	}
+
+	/**
+	 * open the font file and return a php structure containing it.
+	 * first check if this one has been done before and saved in a form more suited to php
+	 * note that if a php serialized version does not exist it will try and make one, but will
+	 * require write access to the directory to do it... it is MUCH faster to have these serialized
+	 * files.
+	 *
+	 * @param $font
+	 */
+	private function openFont($font)
+	{
+		// assume that $font contains the path and file but not the extension
+		$name = basename($font);
+		$dir = dirname($font);
+
+		$fontcache = $this->fontcache;
+		if ($fontcache == '') {
+			$fontcache = $dir;
+		}
+
+		//$name       filename without folder and extension of font metrics
+		//$dir        folder of font metrics
+		//$fontcache  folder of runtime created php serialized version of font metrics.
+		//            If this is not given, the same folder as the font metrics will be used.
+		//            Storing and reusing serialized versions improves speed much
+
+		$this->addMessage("openFont: $font - $name");
+
+		if (!$this->isUnicode || in_array(mb_strtolower(basename($name)), self::$coreFonts)) {
+			$metrics_name = "$name.afm";
+		} else {
+			$metrics_name = "$name.ufm";
+		}
+
+		$cache_name = "$metrics_name.json";
+		$this->addMessage("metrics: $metrics_name, cache: $cache_name");
+
+		if (file_exists($fontcache . '/' . $cache_name)) {
+			$this->addMessage("openFont: json metrics file exists $fontcache/$cache_name");
+			$cached_font_info = json_decode(file_get_contents($fontcache . '/' . $cache_name), true);
+			if (!isset($cached_font_info['_version_']) || $cached_font_info['_version_'] != $this->fontcacheVersion) {
+				$this->addMessage('openFont: font cache is out of date, regenerating');
+			} else {
+				$this->fonts[$font] = $cached_font_info;
+			}
+		}
+
+		if (!isset($this->fonts[$font]) && file_exists("$dir/$metrics_name")) {
+			// then rebuild the php_<font>.afm file from the <font>.afm file
+			$this->addMessage("openFont: build php file from $dir/$metrics_name");
+			$data = [];
+
+			// 20 => 'space'
+			$data['codeToName'] = [];
+
+			// Since we're not going to enable Unicode for the core fonts we need to use a font-based
+			// setting for Unicode support rather than a global setting.
+			$data['isUnicode'] = (strtolower(substr($metrics_name, -3)) !== 'afm');
+
+			$cidtogid = '';
+			if ($data['isUnicode']) {
+				$cidtogid = str_pad('', 256 * 256 * 2, "\x00");
+			}
+
+			$file = file("$dir/$metrics_name");
+
+			foreach ($file as $rowA) {
+				$row = trim($rowA);
+				$pos = strpos($row, ' ');
+
+				if ($pos) {
+					// then there must be some keyword
+					$key = substr($row, 0, $pos);
+					switch ($key) {
+						case 'FontName':
+						case 'FullName':
+						case 'FamilyName':
+						case 'PostScriptName':
+						case 'Weight':
+						case 'ItalicAngle':
+						case 'IsFixedPitch':
+						case 'CharacterSet':
+						case 'UnderlinePosition':
+						case 'UnderlineThickness':
+						case 'Version':
+						case 'EncodingScheme':
+						case 'CapHeight':
+						case 'XHeight':
+						case 'Ascender':
+						case 'Descender':
+						case 'StdHW':
+						case 'StdVW':
+						case 'StartCharMetrics':
+						case 'FontHeightOffset': // OAR - Added so we can offset the height calculation of a Windows font.  Otherwise it's too big.
+							$data[$key] = trim(substr($row, $pos));
+							break;
+
+						case 'FontBBox':
+							$data[$key] = explode(' ', trim(substr($row, $pos)));
+							break;
+
+						//C 39 ; WX 222 ; N quoteright ; B 53 463 157 718 ;
+						case 'C': // Found in AFM files
+							$bits = explode(';', trim($row));
+							$dtmp = ['C' => null, 'N' => null, 'WX' => null, 'B' => []];
+
+							foreach ($bits as $bit) {
+								$bits2 = explode(' ', trim($bit));
+								if (mb_strlen($bits2[0], '8bit') == 0) {
+									continue;
+								}
+
+								if (count($bits2) > 2) {
+									$dtmp[$bits2[0]] = [];
+									for ($i = 1; $i < count($bits2); $i++) {
+										$dtmp[$bits2[0]][] = $bits2[$i];
+									}
+								} else {
+									if (count($bits2) == 2) {
+										$dtmp[$bits2[0]] = $bits2[1];
+									}
+								}
+							}
+
+							$c = (int)$dtmp['C'];
+							$n = $dtmp['N'];
+							$width = floatval($dtmp['WX']);
+
+							if ($c >= 0) {
+								if (!ctype_xdigit($n) || $c != hexdec($n)) {
+									$data['codeToName'][$c] = $n;
+								}
+								$data['C'][$c] = $width;
+							} elseif (isset($n)) {
+								$data['C'][$n] = $width;
+							}
+
+							if (!isset($data['MissingWidth']) && $c === -1 && $n === '.notdef') {
+								$data['MissingWidth'] = $width;
+							}
+
+							break;
+
+						// U 827 ; WX 0 ; N squaresubnosp ; G 675 ;
+						case 'U': // Found in UFM files
+							if (!$data['isUnicode']) {
+								break;
+							}
+
+							$bits = explode(';', trim($row));
+							$dtmp = ['G' => null, 'N' => null, 'U' => null, 'WX' => null];
+
+							foreach ($bits as $bit) {
+								$bits2 = explode(' ', trim($bit));
+								if (mb_strlen($bits2[0], '8bit') === 0) {
+									continue;
+								}
+
+								if (count($bits2) > 2) {
+									$dtmp[$bits2[0]] = [];
+									for ($i = 1; $i < count($bits2); $i++) {
+										$dtmp[$bits2[0]][] = $bits2[$i];
+									}
+								} else {
+									if (count($bits2) == 2) {
+										$dtmp[$bits2[0]] = $bits2[1];
+									}
+								}
+							}
+
+							$c = (int)$dtmp['U'];
+							$n = $dtmp['N'];
+							$glyph = $dtmp['G'];
+							$width = floatval($dtmp['WX']);
+
+							if ($c >= 0) {
+								// Set values in CID to GID map
+								if ($c >= 0 && $c < 0xFFFF && $glyph) {
+									$cidtogid[$c * 2] = chr($glyph >> 8);
+									$cidtogid[$c * 2 + 1] = chr($glyph & 0xFF);
+								}
+
+								if (!ctype_xdigit($n) || $c != hexdec($n)) {
+									$data['codeToName'][$c] = $n;
+								}
+								$data['C'][$c] = $width;
+							} elseif (isset($n)) {
+								$data['C'][$n] = $width;
+							}
+
+							if (!isset($data['MissingWidth']) && $c === -1 && $n === '.notdef') {
+								$data['MissingWidth'] = $width;
+							}
+
+							break;
+
+						case 'KPX':
+							break; // don't include them as they are not used yet
+							//KPX Adieresis yacute -40
+							/*$bits = explode(' ', trim($row));
                             $data['KPX'][$bits[1]][$bits[2]] = $bits[3];
                             break;*/
-                    }
-                }
-            }
-
-            if ($this->compressionReady && $this->options['compression']) {
-                // then implement ZLIB based compression on CIDtoGID string
-                $data['CIDtoGID_Compressed'] = true;
-                $cidtogid = gzcompress($cidtogid, 6);
-            }
-            $data['CIDtoGID'] = base64_encode($cidtogid);
-            $data['_version_'] = $this->fontcacheVersion;
-            $this->fonts[$font] = $data;
-
-            //Because of potential trouble with php safe mode, expect that the folder already exists.
-            //If not existing, this will hit performance because of missing cached results.
-            if (is_dir($fontcache) && is_writable($fontcache)) {
-                file_put_contents("$fontcache/$cache_name", json_encode($data, JSON_PRETTY_PRINT));
-            }
-            $data = null;
-        }
-
-        if (!isset($this->fonts[$font])) {
-            $this->addMessage("openFont: no font file found for $font. Do you need to run load_font.php?");
-        }
-    }
-
-    /**
-     * if the font is not loaded then load it and make the required object
-     * else just make it the current font
-     * the encoding array can contain 'encoding'=> 'none','WinAnsiEncoding','MacRomanEncoding' or 'MacExpertEncoding'
-     * note that encoding='none' will need to be used for symbolic fonts
-     * and 'differences' => an array of mappings between numbers 0->255 and character names.
-     *
-     * @param string $fontName
-     * @param string $encoding
-     * @param bool $set
-     * @param bool $isSubsetting
-     * @return int
-     * @throws FontNotFoundException
-     */
-    function selectFont($fontName, $encoding = '', $set = true, $isSubsetting = true)
-    {
-        if ($fontName === null || $fontName === '') {
-            return $this->currentFontNum;
-        }
-
-        $ext = substr($fontName, -4);
-        if ($ext === '.afm' || $ext === '.ufm') {
-            $fontName = substr($fontName, 0, mb_strlen($fontName) - 4);
-        }
-
-        if (!isset($this->fonts[$fontName])) {
-            $this->addMessage("selectFont: selecting - $fontName - $encoding, $set");
-
-            // load the file
-            $this->openFont($fontName);
-
-            if (isset($this->fonts[$fontName])) {
-                $this->numObj++;
-                $this->numFonts++;
-
-                $font = &$this->fonts[$fontName];
-
-                $name = basename($fontName);
-                $options = ['name' => $name, 'fontFileName' => $fontName, 'isSubsetting' => $isSubsetting];
-
-                if (is_array($encoding)) {
-                    // then encoding and differences might be set
-                    if (isset($encoding['encoding'])) {
-                        $options['encoding'] = $encoding['encoding'];
-                    }
-
-                    if (isset($encoding['differences'])) {
-                        $options['differences'] = $encoding['differences'];
-                    }
-                } else {
-                    if (mb_strlen($encoding, '8bit')) {
-                        // then perhaps only the encoding has been set
-                        $options['encoding'] = $encoding;
-                    }
-                }
-
-                $this->o_font($this->numObj, 'new', $options);
-
-                if (file_exists("$fontName.ttf")) {
-                    $fileSuffix = 'ttf';
-                } elseif (file_exists("$fontName.TTF")) {
-                    $fileSuffix = 'TTF';
-                } elseif (file_exists("$fontName.pfb")) {
-                    $fileSuffix = 'pfb';
-                } elseif (file_exists("$fontName.PFB")) {
-                    $fileSuffix = 'PFB';
-                } else {
-                    $fileSuffix = '';
-                }
-
-                $font['fileSuffix'] = $fileSuffix;
-
-                $font['fontNum'] = $this->numFonts;
-                $font['isSubsetting'] = $isSubsetting && $font['isUnicode'] && strtolower($fileSuffix) === 'ttf';
-
-                // also set the differences here, note that this means that these will take effect only the
-                //first time that a font is selected, else they are ignored
-                if (isset($options['differences'])) {
-                    $font['differences'] = $options['differences'];
-                }
-            }
-        }
-
-        if ($set && isset($this->fonts[$fontName])) {
-            // so if for some reason the font was not set in the last one then it will not be selected
-            $this->currentBaseFont = $fontName;
-
-            // the next lines mean that if a new font is selected, then the current text state will be
-            // applied to it as well.
-            $this->currentFont = $this->currentBaseFont;
-            $this->currentFontNum = $this->fonts[$this->currentFont]['fontNum'];
-        }
-
-        return $this->currentFontNum;
-    }
-
-    /**
-     * sets up the current font, based on the font families, and the current text state
-     * note that this system is quite flexible, a bold-italic font can be completely different to a
-     * italic-bold font, and even bold-bold will have to be defined within the family to have meaning
-     * This function is to be called whenever the currentTextState is changed, it will update
-     * the currentFont setting to whatever the appropriate family one is.
-     * If the user calls selectFont themselves then that will reset the currentBaseFont, and the currentFont
-     * This function will change the currentFont to whatever it should be, but will not change the
-     * currentBaseFont.
-     */
-    private function setCurrentFont()
-    {
-        //   if (strlen($this->currentBaseFont) == 0){
-        //     // then assume an initial font
-        //     $this->selectFont($this->defaultFont);
-        //   }
-        //   $cf = substr($this->currentBaseFont,strrpos($this->currentBaseFont,'/')+1);
-        //   if (strlen($this->currentTextState)
-        //     && isset($this->fontFamilies[$cf])
-        //       && isset($this->fontFamilies[$cf][$this->currentTextState])){
-        //     // then we are in some state or another
-        //     // and this font has a family, and the current setting exists within it
-        //     // select the font, then return it
-        //     $nf = substr($this->currentBaseFont,0,strrpos($this->currentBaseFont,'/')+1).$this->fontFamilies[$cf][$this->currentTextState];
-        //     $this->selectFont($nf,'',0);
-        //     $this->currentFont = $nf;
-        //     $this->currentFontNum = $this->fonts[$nf]['fontNum'];
-        //   } else {
-        //     // the this font must not have the right family member for the current state
-        //     // simply assume the base font
-        $this->currentFont = $this->currentBaseFont;
-        $this->currentFontNum = $this->fonts[$this->currentFont]['fontNum'];
-        //  }
-    }
-
-    /**
-     * function for the user to find out what the ID is of the first page that was created during
-     * startup - useful if they wish to add something to it later.
-     *
-     * @return int
-     */
-    function getFirstPageId()
-    {
-        return $this->firstPageId;
-    }
-
-    /**
-     * add content to the currently active object
-     *
-     * @param $content
-     */
-    private function addContent($content)
-    {
-        $this->objects[$this->currentContents]['c'] .= $content;
-    }
-
-    /**
-     * sets the color for fill operations
-     *
-     * @param array $color
-     * @param bool  $force
-     */
-    function setColor($color, $force = false)
-    {
-        $new_color = [$color[0], $color[1], $color[2], isset($color[3]) ? $color[3] : null];
-
-        if (!$force && $this->currentColor == $new_color) {
-            return;
-        }
-
-        if (isset($new_color[3])) {
-            $this->currentColor = $new_color;
-            $this->addContent(vsprintf("\n%.3F %.3F %.3F %.3F k", $this->currentColor));
-        } else {
-            if (isset($new_color[2])) {
-                $this->currentColor = $new_color;
-                $this->addContent(vsprintf("\n%.3F %.3F %.3F rg", $this->currentColor));
-            }
-        }
-    }
-
-    /**
-     * sets the color for fill operations
-     *
-     * @param string $fillRule
-     */
-    function setFillRule($fillRule)
-    {
-        if (!in_array($fillRule, ["nonzero", "evenodd"])) {
-            return;
-        }
-
-        $this->fillRule = $fillRule;
-    }
-
-    /**
-     * sets the color for stroke operations
-     *
-     * @param array $color
-     * @param bool  $force
-     */
-    function setStrokeColor($color, $force = false)
-    {
-        $new_color = [$color[0], $color[1], $color[2], isset($color[3]) ? $color[3] : null];
-
-        if (!$force && $this->currentStrokeColor == $new_color) {
-            return;
-        }
-
-        if (isset($new_color[3])) {
-            $this->currentStrokeColor = $new_color;
-            $this->addContent(vsprintf("\n%.3F %.3F %.3F %.3F K", $this->currentStrokeColor));
-        } else {
-            if (isset($new_color[2])) {
-                $this->currentStrokeColor = $new_color;
-                $this->addContent(vsprintf("\n%.3F %.3F %.3F RG", $this->currentStrokeColor));
-            }
-        }
-    }
-
-    /**
-     * Set the graphics state for compositions
-     *
-     * @param $parameters
-     */
-    function setGraphicsState($parameters)
-    {
-        // Create a new graphics state object if necessary
-        if (($gstate = array_search($parameters, $this->gstates)) === false) {
-            $this->numObj++;
-            $this->o_extGState($this->numObj, 'new', $parameters);
-            $gstate = $this->numStates;
-            $this->gstates[$gstate] = $parameters;
-        }
-        $this->addContent("\n/GS$gstate gs");
-    }
-
-    /**
-     * Set current blend mode & opacity for lines.
-     *
-     * Valid blend modes are:
-     *
-     * Normal, Multiply, Screen, Overlay, Darken, Lighten,
-     * ColorDogde, ColorBurn, HardLight, SoftLight, Difference,
-     * Exclusion
-     *
-     * @param string $mode    the blend mode to use
-     * @param float  $opacity 0.0 fully transparent, 1.0 fully opaque
-     */
-    function setLineTransparency($mode, $opacity)
-    {
-        static $blend_modes = [
-            "Normal",
-            "Multiply",
-            "Screen",
-            "Overlay",
-            "Darken",
-            "Lighten",
-            "ColorDogde",
-            "ColorBurn",
-            "HardLight",
-            "SoftLight",
-            "Difference",
-            "Exclusion"
-        ];
-
-        if (!in_array($mode, $blend_modes)) {
-            $mode = "Normal";
-        }
-
-        if (is_null($this->currentLineTransparency)) {
-            $this->currentLineTransparency = [];
-        }
-
-        if ($mode === (key_exists('mode', $this->currentLineTransparency) ?
-            $this->currentLineTransparency['mode'] : '') &&
-            $opacity === (key_exists('opacity', $this->currentLineTransparency) ?
-            $this->currentLineTransparency["opacity"] : '')) {
-            return;
-        }
-
-        $this->currentLineTransparency["mode"] = $mode;
-        $this->currentLineTransparency["opacity"] = $opacity;
-
-        $options = [
-            "BM" => "/$mode",
-            "CA" => (float)$opacity
-        ];
-
-        $this->setGraphicsState($options);
-    }
-
-    /**
-     * Set current blend mode & opacity for filled objects.
-     *
-     * Valid blend modes are:
-     *
-     * Normal, Multiply, Screen, Overlay, Darken, Lighten,
-     * ColorDogde, ColorBurn, HardLight, SoftLight, Difference,
-     * Exclusion
-     *
-     * @param string $mode    the blend mode to use
-     * @param float  $opacity 0.0 fully transparent, 1.0 fully opaque
-     */
-    function setFillTransparency($mode, $opacity)
-    {
-        static $blend_modes = [
-            "Normal",
-            "Multiply",
-            "Screen",
-            "Overlay",
-            "Darken",
-            "Lighten",
-            "ColorDogde",
-            "ColorBurn",
-            "HardLight",
-            "SoftLight",
-            "Difference",
-            "Exclusion"
-        ];
-
-        if (!in_array($mode, $blend_modes)) {
-            $mode = "Normal";
-        }
-
-        if (is_null($this->currentFillTransparency)) {
-            $this->currentFillTransparency = [];
-        }
-
-        if ($mode === (key_exists('mode', $this->currentFillTransparency) ?
-            $this->currentFillTransparency['mode'] : '') &&
-            $opacity === (key_exists('opacity', $this->currentFillTransparency) ?
-            $this->currentFillTransparency["opacity"] : '')) {
-            return;
-        }
-
-        $this->currentFillTransparency["mode"] = $mode;
-        $this->currentFillTransparency["opacity"] = $opacity;
-
-        $options = [
-            "BM" => "/$mode",
-            "ca" => (float)$opacity,
-        ];
-
-        $this->setGraphicsState($options);
-    }
-
-    /**
-     * draw a line from one set of coordinates to another
-     *
-     * @param float $x1
-     * @param float $y1
-     * @param float $x2
-     * @param float $y2
-     * @param bool  $stroke
-     */
-    function line($x1, $y1, $x2, $y2, $stroke = true)
-    {
-        $this->addContent(sprintf("\n%.3F %.3F m %.3F %.3F l", $x1, $y1, $x2, $y2));
-
-        if ($stroke) {
-            $this->addContent(' S');
-        }
-    }
-
-    /**
-     * draw a bezier curve based on 4 control points
-     *
-     * @param float $x0
-     * @param float $y0
-     * @param float $x1
-     * @param float $y1
-     * @param float $x2
-     * @param float $y2
-     * @param float $x3
-     * @param float $y3
-     */
-    function curve($x0, $y0, $x1, $y1, $x2, $y2, $x3, $y3)
-    {
-        // in the current line style, draw a bezier curve from (x0,y0) to (x3,y3) using the other two points
-        // as the control points for the curve.
-        $this->addContent(
-            sprintf("\n%.3F %.3F m %.3F %.3F %.3F %.3F %.3F %.3F c S", $x0, $y0, $x1, $y1, $x2, $y2, $x3, $y3)
-        );
-    }
-
-    /**
-     * draw a part of an ellipse
-     *
-     * @param float $x0
-     * @param float $y0
-     * @param float $astart
-     * @param float $afinish
-     * @param float $r1
-     * @param float $r2
-     * @param float $angle
-     * @param int $nSeg
-     */
-    function partEllipse($x0, $y0, $astart, $afinish, $r1, $r2 = 0, $angle = 0, $nSeg = 8)
-    {
-        $this->ellipse($x0, $y0, $r1, $r2, $angle, $nSeg, $astart, $afinish, false);
-    }
-
-    /**
-     * draw a filled ellipse
-     *
-     * @param float $x0
-     * @param float $y0
-     * @param float $r1
-     * @param float $r2
-     * @param float $angle
-     * @param int $nSeg
-     * @param float $astart
-     * @param float $afinish
-     */
-    function filledEllipse($x0, $y0, $r1, $r2 = 0, $angle = 0, $nSeg = 8, $astart = 0, $afinish = 360)
-    {
-        $this->ellipse($x0, $y0, $r1, $r2, $angle, $nSeg, $astart, $afinish, true, true);
-    }
-
-    /**
-     * @param float $x
-     * @param float $y
-     */
-    function lineTo($x, $y)
-    {
-        $this->addContent(sprintf("\n%.3F %.3F l", $x, $y));
-    }
-
-    /**
-     * @param float $x
-     * @param float $y
-     */
-    function moveTo($x, $y)
-    {
-        $this->addContent(sprintf("\n%.3F %.3F m", $x, $y));
-    }
-
-    /**
-     * draw a bezier curve based on 4 control points
-     *
-     * @param float $x1
-     * @param float $y1
-     * @param float $x2
-     * @param float $y2
-     * @param float $x3
-     * @param float $y3
-     */
-    function curveTo($x1, $y1, $x2, $y2, $x3, $y3)
-    {
-        $this->addContent(sprintf("\n%.3F %.3F %.3F %.3F %.3F %.3F c", $x1, $y1, $x2, $y2, $x3, $y3));
-    }
-
-    /**
-     * draw a bezier curve based on 4 control points
-     *
-     * @param float $cpx
-     * @param float $cpy
-     * @param float $x
-     * @param float $y
-     */
-    function quadTo($cpx, $cpy, $x, $y)
-    {
-        $this->addContent(sprintf("\n%.3F %.3F %.3F %.3F v", $cpx, $cpy, $x, $y));
-    }
-
-    function closePath()
-    {
-        $this->addContent(' h');
-    }
-
-    function endPath()
-    {
-        $this->addContent(' n');
-    }
-
-    /**
-     * draw an ellipse
-     * note that the part and filled ellipse are just special cases of this function
-     *
-     * draws an ellipse in the current line style
-     * centered at $x0,$y0, radii $r1,$r2
-     * if $r2 is not set, then a circle is drawn
-     * from $astart to $afinish, measured in degrees, running anti-clockwise from the right hand side of the ellipse.
-     * nSeg is not allowed to be less than 2, as this will simply draw a line (and will even draw a
-     * pretty crappy shape at 2, as we are approximating with bezier curves.
-     *
-     * @param float $x0
-     * @param float $y0
-     * @param float $r1
-     * @param float $r2
-     * @param float $angle
-     * @param int   $nSeg
-     * @param float $astart
-     * @param float $afinish
-     * @param bool  $close
-     * @param bool  $fill
-     * @param bool  $stroke
-     * @param bool  $incomplete
-     */
-    function ellipse(
-        $x0,
-        $y0,
-        $r1,
-        $r2 = 0,
-        $angle = 0,
-        $nSeg = 8,
-        $astart = 0,
-        $afinish = 360,
-        $close = true,
-        $fill = false,
-        $stroke = true,
-        $incomplete = false
-    ) {
-        if ($r1 == 0) {
-            return;
-        }
-
-        if ($r2 == 0) {
-            $r2 = $r1;
-        }
-
-        if ($nSeg < 2) {
-            $nSeg = 2;
-        }
-
-        $astart = deg2rad((float)$astart);
-        $afinish = deg2rad((float)$afinish);
-        $totalAngle = $afinish - $astart;
-
-        $dt = $totalAngle / $nSeg;
-        $dtm = $dt / 3;
-
-        if ($angle != 0) {
-            $a = -1 * deg2rad((float)$angle);
-
-            $this->addContent(
-                sprintf("\n q %.3F %.3F %.3F %.3F %.3F %.3F cm", cos($a), -sin($a), sin($a), cos($a), $x0, $y0)
-            );
-
-            $x0 = 0;
-            $y0 = 0;
-        }
-
-        $t1 = $astart;
-        $a0 = $x0 + $r1 * cos($t1);
-        $b0 = $y0 + $r2 * sin($t1);
-        $c0 = -$r1 * sin($t1);
-        $d0 = $r2 * cos($t1);
-
-        if (!$incomplete) {
-            $this->addContent(sprintf("\n%.3F %.3F m ", $a0, $b0));
-        }
-
-        for ($i = 1; $i <= $nSeg; $i++) {
-            // draw this bit of the total curve
-            $t1 = $i * $dt + $astart;
-            $a1 = $x0 + $r1 * cos($t1);
-            $b1 = $y0 + $r2 * sin($t1);
-            $c1 = -$r1 * sin($t1);
-            $d1 = $r2 * cos($t1);
-
-            $this->addContent(
-                sprintf(
-                    "\n%.3F %.3F %.3F %.3F %.3F %.3F c",
-                    ($a0 + $c0 * $dtm),
-                    ($b0 + $d0 * $dtm),
-                    ($a1 - $c1 * $dtm),
-                    ($b1 - $d1 * $dtm),
-                    $a1,
-                    $b1
-                )
-            );
-
-            $a0 = $a1;
-            $b0 = $b1;
-            $c0 = $c1;
-            $d0 = $d1;
-        }
-
-        if (!$incomplete) {
-            if ($fill) {
-                $this->addContent(' f');
-            }
-
-            if ($stroke) {
-                if ($close) {
-                    $this->addContent(' s'); // small 's' signifies closing the path as well
-                } else {
-                    $this->addContent(' S');
-                }
-            }
-        }
-
-        if ($angle != 0) {
-            $this->addContent(' Q');
-        }
-    }
-
-    /**
-     * this sets the line drawing style.
-     * width, is the thickness of the line in user units
-     * cap is the type of cap to put on the line, values can be 'butt','round','square'
-     *    where the diffference between 'square' and 'butt' is that 'square' projects a flat end past the
-     *    end of the line.
-     * join can be 'miter', 'round', 'bevel'
-     * dash is an array which sets the dash pattern, is a series of length values, which are the lengths of the
-     *   on and off dashes.
-     *   (2) represents 2 on, 2 off, 2 on , 2 off ...
-     *   (2,1) is 2 on, 1 off, 2 on, 1 off.. etc
-     * phase is a modifier on the dash pattern which is used to shift the point at which the pattern starts.
-     *
-     * @param float  $width
-     * @param string $cap
-     * @param string $join
-     * @param array  $dash
-     * @param int    $phase
-     */
-    function setLineStyle($width = 1, $cap = '', $join = '', $dash = '', $phase = 0)
-    {
-        // this is quite inefficient in that it sets all the parameters whenever 1 is changed, but will fix another day
-        $string = '';
-
-        if ($width > 0) {
-            $string .= "$width w";
-        }
-
-        $ca = ['butt' => 0, 'round' => 1, 'square' => 2];
-
-        if (isset($ca[$cap])) {
-            $string .= " $ca[$cap] J";
-        }
-
-        $ja = ['miter' => 0, 'round' => 1, 'bevel' => 2];
-
-        if (isset($ja[$join])) {
-            $string .= " $ja[$join] j";
-        }
-
-        if (is_array($dash)) {
-            $string .= ' [ ' . implode(' ', $dash) . " ] $phase d";
-        }
-
-        $this->currentLineStyle = $string;
-        $this->addContent("\n$string");
-    }
-
-    /**
-     * draw a polygon, the syntax for this is similar to the GD polygon command
-     *
-     * @param float[] $p
-     * @param bool    $fill
-     */
-    public function polygon(array $p, bool $fill = false): void
-    {
-        $this->addContent(sprintf("\n%.3F %.3F m ", $p[0], $p[1]));
-
-        $n = count($p);
-        for ($i = 2; $i < $n; $i = $i + 2) {
-            $this->addContent(sprintf("%.3F %.3F l ", $p[$i], $p[$i + 1]));
-        }
-
-        if ($fill) {
-            $this->addContent(' f');
-        } else {
-            $this->addContent(' S');
-        }
-    }
-
-    /**
-     * a filled rectangle, note that it is the width and height of the rectangle which are the secondary parameters, not
-     * the coordinates of the upper-right corner
-     *
-     * @param float $x1
-     * @param float $y1
-     * @param float $width
-     * @param float $height
-     */
-    function filledRectangle($x1, $y1, $width, $height)
-    {
-        $this->addContent(sprintf("\n%.3F %.3F %.3F %.3F re f", $x1, $y1, $width, $height));
-    }
-
-    /**
-     * draw a rectangle, note that it is the width and height of the rectangle which are the secondary parameters, not
-     * the coordinates of the upper-right corner
-     *
-     * @param float $x1
-     * @param float $y1
-     * @param float $width
-     * @param float $height
-     */
-    function rectangle($x1, $y1, $width, $height)
-    {
-        $this->addContent(sprintf("\n%.3F %.3F %.3F %.3F re S", $x1, $y1, $width, $height));
-    }
-
-    /**
-     * draw a rectangle, note that it is the width and height of the rectangle which are the secondary parameters, not
-     * the coordinates of the upper-right corner
-     *
-     * @param float $x1
-     * @param float $y1
-     * @param float $width
-     * @param float $height
-     */
-    function rect($x1, $y1, $width, $height)
-    {
-        $this->addContent(sprintf("\n%.3F %.3F %.3F %.3F re", $x1, $y1, $width, $height));
-    }
-
-    function stroke(bool $close = false)
-    {
-        $this->addContent("\n" . ($close ? "s" : "S"));
-    }
-
-    function fill()
-    {
-        $this->addContent("\nf" . ($this->fillRule === "evenodd" ? "*" : ""));
-    }
-
-    function fillStroke(bool $close = false)
-    {
-        $this->addContent("\n" . ($close ? "b" : "B") . ($this->fillRule === "evenodd" ? "*" : ""));
-    }
-
-    /**
-     * @param string $subtype
-     * @param integer $x
-     * @param integer $y
-     * @param integer $w
-     * @param integer $h
-     * @return int
-     */
-    function addXObject($subtype, $x, $y, $w, $h)
-    {
-        $id = ++$this->numObj;
-        $this->o_xobject($id, 'new', ['Subtype' => $subtype, 'bbox' => [$x, $y, $w, $h]]);
-        return $id;
-    }
-
-    /**
-     * @param integer $numXObject
-     * @param string $type
-     * @param array $options
-     */
-    function setXObjectResource($numXObject, $type, $options)
-    {
-        if (in_array($type, ['procset', 'font', 'xObject'])) {
-            $this->o_xobject($numXObject, $type, $options);
-        }
-    }
-
-    /**
-     * add signature
-     *
-     * $fieldSigId = $cpdf->addFormField(Cpdf::ACROFORM_FIELD_SIG, 'Signature1', 0, 0, 0, 0, 0);
-     *
-     * $signatureId = $cpdf->addSignature([
-     *   'signcert' => file_get_contents('dompdf.crt'),
-     *   'privkey' => file_get_contents('dompdf.key'),
-     *   'password' => 'password',
-     *   'name' => 'DomPDF DEMO',
-     *   'location' => 'Home',
-     *   'reason' => 'First Form',
-     *   'contactinfo' => 'info'
-     * ]);
-     * $cpdf->setFormFieldValue($fieldSigId, "$signatureId 0 R");
-     *
-     * @param string $signcert
-     * @param string $privkey
-     * @param string $password
-     * @param string|null $name
-     * @param string|null $location
-     * @param string|null $reason
-     * @param string|null $contactinfo
-     * @return int
-     */
-    function addSignature($signcert, $privkey, $password = '', $name = null, $location = null, $reason = null, $contactinfo = null) {
-        $sigId = ++$this->numObj;
-        $this->o_sig($sigId, 'new', [
-          'SignCert' => $signcert,
-          'PrivKey' => $privkey,
-          'Password' => $password,
-          'Name' => $name,
-          'Location' => $location,
-          'Reason' => $reason,
-          'ContactInfo' => $contactinfo
-        ]);
-
-        return $sigId;
-    }
-
-    /**
-     * add field to form
-     *
-     * @param string $type ACROFORM_FIELD_*
-     * @param string $name
-     * @param $x0
-     * @param $y0
-     * @param $x1
-     * @param $y1
-     * @param integer $ff Field Flag ACROFORM_FIELD_*_*
-     * @param float $size
-     * @param array $color
-     * @return int
-     */
-    public function addFormField($type, $name, $x0, $y0, $x1, $y1, $ff = 0, $size = 10.0, $color = [0, 0, 0])
-    {
-        if (!$this->numFonts) {
-            $this->selectFont($this->defaultFont);
-        }
-
-        $color = implode(' ', $color) . ' rg';
-
-        $currentFontNum = $this->currentFontNum;
-        $font = array_filter(
-            $this->objects[$this->currentNode]['info']['fonts'],
-            function ($item) use ($currentFontNum) { return $item['fontNum'] == $currentFontNum; }
-        );
-
-        $this->o_acroform($this->acroFormId, 'font',
-          ['objNum' => $font[0]['objNum'], 'fontNum' => $font[0]['fontNum']]);
-
-        $fieldId = ++$this->numObj;
-        $this->o_field($fieldId, 'new', [
-          'rect' => [$x0, $y0, $x1, $y1],
-          'F' => 4,
-          'FT' => "/$type",
-          'T' => $name,
-          'Ff' => $ff,
-          'pageid' => $this->currentPage,
-          'da' => "$color /F$this->currentFontNum " . sprintf('%.1F Tf ', $size)
-        ]);
-
-        return $fieldId;
-    }
-
-    /**
-     * set Field value
-     *
-     * @param integer $numFieldObj
-     * @param string $value
-     */
-    public function setFormFieldValue($numFieldObj, $value)
-    {
-        $this->o_field($numFieldObj, 'set', ['value' => $value]);
-    }
-
-    /**
-     * set Field value (reference)
-     *
-     * @param integer $numFieldObj
-     * @param integer $numObj Object number
-     */
-    public function setFormFieldRefValue($numFieldObj, $numObj)
-    {
-        $this->o_field($numFieldObj, 'set', ['refvalue' => $numObj]);
-    }
-
-    /**
-     * set Field Appearanc (reference)
-     *
-     * @param integer $numFieldObj
-     * @param integer $normalNumObj
-     * @param integer|null $rolloverNumObj
-     * @param integer|null $downNumObj
-     */
-    public function setFormFieldAppearance($numFieldObj, $normalNumObj, $rolloverNumObj = null, $downNumObj = null)
-    {
-        $appearance['N'] = $normalNumObj;
-
-        if ($rolloverNumObj !== null) {
-            $appearance['R'] = $rolloverNumObj;
-        }
-
-        if ($downNumObj !== null) {
-            $appearance['D'] = $downNumObj;
-        }
-
-        $this->o_field($numFieldObj, 'set', ['appearance' => $appearance]);
-    }
-
-    /**
-     * set Choice Field option values
-     *
-     * @param integer $numFieldObj
-     * @param array $value
-     */
-    public function setFormFieldOpt($numFieldObj, $value)
-    {
-        $this->o_field($numFieldObj, 'set', ['options' => $value]);
-    }
-
-    /**
-     * add form to document
-     *
-     * @param integer $sigFlags
-     * @param boolean $needAppearances
-     */
-    public function addForm($sigFlags = 0, $needAppearances = false)
-    {
-        $this->acroFormId = ++$this->numObj;
-        $this->o_acroform($this->acroFormId, 'new', [
-          'NeedAppearances' => $needAppearances ? 'true' : 'false',
-          'SigFlags' => $sigFlags
-        ]);
-    }
-
-    /**
-     * save the current graphic state
-     */
-    function save()
-    {
-        // we must reset the color cache or it will keep bad colors after clipping
-        $this->currentColor = null;
-        $this->currentStrokeColor = null;
-        $this->addContent("\nq");
-    }
-
-    /**
-     * restore the last graphic state
-     */
-    function restore()
-    {
-        // we must reset the color cache or it will keep bad colors after clipping
-        $this->currentColor = null;
-        $this->currentStrokeColor = null;
-        $this->addContent("\nQ");
-    }
-
-    /**
-     * draw a clipping rectangle, all the elements added after this will be clipped
-     *
-     * @param float $x1
-     * @param float $y1
-     * @param float $width
-     * @param float $height
-     */
-    function clippingRectangle($x1, $y1, $width, $height)
-    {
-        $this->save();
-        $this->addContent(sprintf("\n%.3F %.3F %.3F %.3F re W n", $x1, $y1, $width, $height));
-    }
-
-    /**
-     * draw a clipping rounded rectangle, all the elements added after this will be clipped
-     *
-     * @param float $x1
-     * @param float $y1
-     * @param float $w
-     * @param float $h
-     * @param float $rTL
-     * @param float $rTR
-     * @param float $rBR
-     * @param float $rBL
-     */
-    function clippingRectangleRounded($x1, $y1, $w, $h, $rTL, $rTR, $rBR, $rBL)
-    {
-        $this->save();
-
-        // start: top edge, left end
-        $this->addContent(sprintf("\n%.3F %.3F m ", $x1, $y1 - $rTL + $h));
-
-        // line: bottom edge, left end
-        $this->addContent(sprintf("\n%.3F %.3F l ", $x1, $y1 + $rBL));
-
-        // curve: bottom-left corner
-        $this->ellipse($x1 + $rBL, $y1 + $rBL, $rBL, 0, 0, 8, 180, 270, false, false, false, true);
-
-        // line: right edge, bottom end
-        $this->addContent(sprintf("\n%.3F %.3F l ", $x1 + $w - $rBR, $y1));
-
-        // curve: bottom-right corner
-        $this->ellipse($x1 + $w - $rBR, $y1 + $rBR, $rBR, 0, 0, 8, 270, 360, false, false, false, true);
-
-        // line: right edge, top end
-        $this->addContent(sprintf("\n%.3F %.3F l ", $x1 + $w, $y1 + $h - $rTR));
-
-        // curve: bottom-right corner
-        $this->ellipse($x1 + $w - $rTR, $y1 + $h - $rTR, $rTR, 0, 0, 8, 0, 90, false, false, false, true);
-
-        // line: bottom edge, right end
-        $this->addContent(sprintf("\n%.3F %.3F l ", $x1 + $rTL, $y1 + $h));
-
-        // curve: top-right corner
-        $this->ellipse($x1 + $rTL, $y1 + $h - $rTL, $rTL, 0, 0, 8, 90, 180, false, false, false, true);
-
-        // line: top edge, left end
-        $this->addContent(sprintf("\n%.3F %.3F l ", $x1 + $rBL, $y1));
-
-        // Close & clip
-        $this->addContent(" W n");
-    }
-
-    /**
-     * draw a clipping polygon, the syntax for this is similar to the GD polygon command
-     *
-     * @param float[] $p
-     */
-    public function clippingPolygon(array $p): void
-    {
-        $this->save();
-
-        $this->addContent(sprintf("\n%.3F %.3F m ", $p[0], $p[1]));
-
-        $n = count($p);
-        for ($i = 2; $i < $n; $i = $i + 2) {
-            $this->addContent(sprintf("%.3F %.3F l ", $p[$i], $p[$i + 1]));
-        }
-
-        $this->addContent("W n");
-    }
-
-    /**
-     * ends the last clipping shape
-     */
-    function clippingEnd()
-    {
-        $this->restore();
-    }
-
-    /**
-     * scale
-     *
-     * @param float $s_x scaling factor for width as percent
-     * @param float $s_y scaling factor for height as percent
-     * @param float $x   Origin abscissa
-     * @param float $y   Origin ordinate
-     */
-    function scale($s_x, $s_y, $x, $y)
-    {
-        $y = $this->currentPageSize["height"] - $y;
-
-        $tm = [
-            $s_x,
-            0,
-            0,
-            $s_y,
-            $x * (1 - $s_x),
-            $y * (1 - $s_y)
-        ];
-
-        $this->transform($tm);
-    }
-
-    /**
-     * translate
-     *
-     * @param float $t_x movement to the right
-     * @param float $t_y movement to the bottom
-     */
-    function translate($t_x, $t_y)
-    {
-        $tm = [
-            1,
-            0,
-            0,
-            1,
-            $t_x,
-            -$t_y
-        ];
-
-        $this->transform($tm);
-    }
-
-    /**
-     * rotate
-     *
-     * @param float $angle angle in degrees for counter-clockwise rotation
-     * @param float $x     Origin abscissa
-     * @param float $y     Origin ordinate
-     */
-    function rotate($angle, $x, $y)
-    {
-        $y = $this->currentPageSize["height"] - $y;
-
-        $a = deg2rad($angle);
-        $cos_a = cos($a);
-        $sin_a = sin($a);
-
-        $tm = [
-            $cos_a,
-            -$sin_a,
-            $sin_a,
-            $cos_a,
-            $x - $sin_a * $y - $cos_a * $x,
-            $y - $cos_a * $y + $sin_a * $x,
-        ];
-
-        $this->transform($tm);
-    }
-
-    /**
-     * skew
-     *
-     * @param float $angle_x
-     * @param float $angle_y
-     * @param float $x Origin abscissa
-     * @param float $y Origin ordinate
-     */
-    function skew($angle_x, $angle_y, $x, $y)
-    {
-        $y = $this->currentPageSize["height"] - $y;
-
-        $tan_x = tan(deg2rad($angle_x));
-        $tan_y = tan(deg2rad($angle_y));
-
-        $tm = [
-            1,
-            -$tan_y,
-            -$tan_x,
-            1,
-            $tan_x * $y,
-            $tan_y * $x,
-        ];
-
-        $this->transform($tm);
-    }
-
-    /**
-     * apply graphic transformations
-     *
-     * @param array $tm transformation matrix
-     */
-    function transform($tm)
-    {
-        $this->addContent(vsprintf("\n %.3F %.3F %.3F %.3F %.3F %.3F cm", $tm));
-    }
-
-    /**
-     * add a new page to the document
-     * this also makes the new page the current active object
-     *
-     * @param int $insert
-     * @param int $id
-     * @param string $pos
-     * @return int
-     */
-    function newPage($insert = 0, $id = 0, $pos = 'after')
-    {
-        // if there is a state saved, then go up the stack closing them
-        // then on the new page, re-open them with the right setings
-
-        if ($this->nStateStack) {
-            for ($i = $this->nStateStack; $i >= 1; $i--) {
-                $this->restoreState($i);
-            }
-        }
-
-        $this->numObj++;
-
-        if ($insert) {
-            // the id from the ezPdf class is the id of the contents of the page, not the page object itself
-            // query that object to find the parent
-            $rid = $this->objects[$id]['onPage'];
-            $opt = ['rid' => $rid, 'pos' => $pos];
-            $this->o_page($this->numObj, 'new', $opt);
-        } else {
-            $this->o_page($this->numObj, 'new');
-        }
-
-        // if there is a stack saved, then put that onto the page
-        if ($this->nStateStack) {
-            for ($i = 1; $i <= $this->nStateStack; $i++) {
-                $this->saveState($i);
-            }
-        }
-
-        // and if there has been a stroke or fill color set, then transfer them
-        if (isset($this->currentColor)) {
-            $this->setColor($this->currentColor, true);
-        }
-
-        if (isset($this->currentStrokeColor)) {
-            $this->setStrokeColor($this->currentStrokeColor, true);
-        }
-
-        // if there is a line style set, then put this in too
-        if (mb_strlen($this->currentLineStyle, '8bit')) {
-            $this->addContent("\n$this->currentLineStyle");
-        }
-
-        // the call to the o_page object set currentContents to the present page, so this can be returned as the page id
-        return $this->currentContents;
-    }
-
-    /**
-     * Streams the PDF to the client.
-     *
-     * @param string $filename The filename to present to the client.
-     * @param array $options Associative array: 'compress' => 1 or 0 (default 1); 'Attachment' => 1 or 0 (default 1).
-     */
-    function stream($filename = "document.pdf", $options = [])
-    {
-        if (headers_sent()) {
-            die("Unable to stream pdf: headers already sent");
-        }
-
-        if (!isset($options["compress"])) $options["compress"] = true;
-        if (!isset($options["Attachment"])) $options["Attachment"] = true;
-
-        $debug = !$options['compress'];
-        $tmp = ltrim($this->output($debug));
-
-        header("Cache-Control: private");
-        header("Content-Type: application/pdf");
-        header("Content-Length: " . mb_strlen($tmp, "8bit"));
-
-        $filename = str_replace(["\n", "'"], "", basename($filename, ".pdf")) . ".pdf";
-        $attachment = $options["Attachment"] ? "attachment" : "inline";
-
-        $encoding = mb_detect_encoding($filename);
-        $fallbackfilename = mb_convert_encoding($filename, "ISO-8859-1", $encoding);
-        $fallbackfilename = str_replace("\"", "", $fallbackfilename);
-        $encodedfilename = rawurlencode($filename);
-
-        $contentDisposition = "Content-Disposition: $attachment; filename=\"$fallbackfilename\"";
-        if ($fallbackfilename !== $filename) {
-            $contentDisposition .= "; filename*=UTF-8''$encodedfilename";
-        }
-        header($contentDisposition);
-
-        echo $tmp;
-        flush();
-    }
-
-    /**
-     * return the height in units of the current font in the given size
-     *
-     * @param float $size
-     *
-     * @return float
-     */
-    public function getFontHeight(float $size): float
-    {
-        if (!$this->numFonts) {
-            $this->selectFont($this->defaultFont);
-        }
-
-        $font = $this->fonts[$this->currentFont];
-
-        // for the current font, and the given size, what is the height of the font in user units
-        if (isset($font['Ascender']) && isset($font['Descender'])) {
-            $h = $font['Ascender'] - $font['Descender'];
-        } else {
-            $h = $font['FontBBox'][3] - $font['FontBBox'][1];
-        }
-
-        // have to adjust by a font offset for Windows fonts.  unfortunately it looks like
-        // the bounding box calculations are wrong and I don't know why.
-        if (isset($font['FontHeightOffset'])) {
-            // For CourierNew from Windows this needs to be -646 to match the
-            // Adobe native Courier font.
-            //
-            // For FreeMono from GNU this needs to be -337 to match the
-            // Courier font.
-            //
-            // Both have been added manually to the .afm and .ufm files.
-            $h += (int)$font['FontHeightOffset'];
-        }
-
-        return $size * $h / 1000;
-    }
-
-    /**
-     * @param float $size
-     *
-     * @return float
-     */
-    public function getFontXHeight(float $size): float
-    {
-        if (!$this->numFonts) {
-            $this->selectFont($this->defaultFont);
-        }
-
-        $font = $this->fonts[$this->currentFont];
-
-        // for the current font, and the given size, what is the height of the font in user units
-        if (isset($font['XHeight'])) {
-            $xh = $font['Ascender'] - $font['Descender'];
-        } else {
-            $xh = $this->getFontHeight($size) / 2;
-        }
-
-        return $size * $xh / 1000;
-    }
-
-    /**
-     * return the font descender, this will normally return a negative number
-     * if you add this number to the baseline, you get the level of the bottom of the font
-     * it is in the pdf user units
-     *
-     * @param float $size
-     *
-     * @return float
-     */
-    public function getFontDescender(float $size): float
-    {
-        // note that this will most likely return a negative value
-        if (!$this->numFonts) {
-            $this->selectFont($this->defaultFont);
-        }
-
-        //$h = $this->fonts[$this->currentFont]['FontBBox'][1];
-        $h = $this->fonts[$this->currentFont]['Descender'];
-
-        return $size * $h / 1000;
-    }
-
-    /**
-     * filter the text, this is applied to all text just before being inserted into the pdf document
-     * it escapes the various things that need to be escaped, and so on
-     *
-     * @param $text
-     * @param bool $bom
-     * @param bool $convert_encoding
-     * @return string
-     */
-    function filterText($text, $bom = true, $convert_encoding = true)
-    {
-        if (!$this->numFonts) {
-            $this->selectFont($this->defaultFont);
-        }
-
-        if ($convert_encoding) {
-            $cf = $this->currentFont;
-            if (isset($this->fonts[$cf]) && $this->fonts[$cf]['isUnicode']) {
-                $text = $this->utf8toUtf16BE($text, $bom);
-            } else {
-                //$text = html_entity_decode($text, ENT_QUOTES);
-                $text = mb_convert_encoding($text, self::$targetEncoding, 'UTF-8');
-            }
-        } elseif ($bom) {
-            $text = $this->utf8toUtf16BE($text, $bom);
-        }
-
-        // the chr(13) substitution fixes a bug seen in TCPDF (bug #1421290)
-        return strtr($text, [')' => '\\)', '(' => '\\(', '\\' => '\\\\', chr(13) => '\r']);
-    }
-
-    /**
-     * return array containing codepoints (UTF-8 character values) for the
-     * string passed in.
-     *
-     * based on the excellent TCPDF code by Nicola Asuni and the
-     * RFC for UTF-8 at http://www.faqs.org/rfcs/rfc3629.html
-     *
-     * @param string $text UTF-8 string to process
-     * @return array UTF-8 codepoints array for the string
-     */
-    function utf8toCodePointsArray(&$text)
-    {
-        $length = mb_strlen($text, '8bit'); // http://www.php.net/manual/en/function.mb-strlen.php#77040
-        $unicode = []; // array containing unicode values
-        $bytes = []; // array containing single character byte sequences
-        $numbytes = 1; // number of octets needed to represent the UTF-8 character
-
-        for ($i = 0; $i < $length; $i++) {
-            $c = ord($text[$i]); // get one string character at time
-            if (count($bytes) === 0) { // get starting octect
-                if ($c <= 0x7F) {
-                    $unicode[] = $c; // use the character "as is" because is ASCII
-                    $numbytes = 1;
-                } elseif (($c >> 0x05) === 0x06) { // 2 bytes character (0x06 = 110 BIN)
-                    $bytes[] = ($c - 0xC0) << 0x06;
-                    $numbytes = 2;
-                } elseif (($c >> 0x04) === 0x0E) { // 3 bytes character (0x0E = 1110 BIN)
-                    $bytes[] = ($c - 0xE0) << 0x0C;
-                    $numbytes = 3;
-                } elseif (($c >> 0x03) === 0x1E) { // 4 bytes character (0x1E = 11110 BIN)
-                    $bytes[] = ($c - 0xF0) << 0x12;
-                    $numbytes = 4;
-                } else {
-                    // use replacement character for other invalid sequences
-                    $unicode[] = 0xFFFD;
-                    $bytes = [];
-                    $numbytes = 1;
-                }
-            } elseif (($c >> 0x06) === 0x02) { // bytes 2, 3 and 4 must start with 0x02 = 10 BIN
-                $bytes[] = $c - 0x80;
-                if (count($bytes) === $numbytes) {
-                    // compose UTF-8 bytes to a single unicode value
-                    $c = $bytes[0];
-                    for ($j = 1; $j < $numbytes; $j++) {
-                        $c += ($bytes[$j] << (($numbytes - $j - 1) * 0x06));
-                    }
-                    if ((($c >= 0xD800) and ($c <= 0xDFFF)) or ($c >= 0x10FFFF)) {
-                        // The definition of UTF-8 prohibits encoding character numbers between
-                        // U+D800 and U+DFFF, which are reserved for use with the UTF-16
-                        // encoding form (as surrogate pairs) and do not directly represent
-                        // characters.
-                        $unicode[] = 0xFFFD; // use replacement character
-                    } else {
-                        $unicode[] = $c; // add char to array
-                    }
-                    // reset data for next char
-                    $bytes = [];
-                    $numbytes = 1;
-                }
-            } else {
-                // use replacement character for other invalid sequences
-                $unicode[] = 0xFFFD;
-                $bytes = [];
-                $numbytes = 1;
-            }
-        }
-
-        return $unicode;
-    }
-
-    /**
-     * convert UTF-8 to UTF-16 with an additional byte order marker
-     * at the front if required.
-     *
-     * based on the excellent TCPDF code by Nicola Asuni and the
-     * RFC for UTF-8 at http://www.faqs.org/rfcs/rfc3629.html
-     *
-     * @param string  $text UTF-8 string to process
-     * @param boolean $bom  whether to add the byte order marker
-     * @return string UTF-16 result string
-     */
-    function utf8toUtf16BE(&$text, $bom = true)
-    {
-        $out = $bom ? "\xFE\xFF" : '';
-
-        $unicode = $this->utf8toCodePointsArray($text);
-        foreach ($unicode as $c) {
-            if ($c === 0xFFFD) {
-                $out .= "\xFF\xFD"; // replacement character
-            } elseif ($c < 0x10000) {
-                $out .= chr($c >> 0x08) . chr($c & 0xFF);
-            } else {
-                $c -= 0x10000;
-                $w1 = 0xD800 | ($c >> 0x10);
-                $w2 = 0xDC00 | ($c & 0x3FF);
-                $out .= chr($w1 >> 0x08) . chr($w1 & 0xFF) . chr($w2 >> 0x08) . chr($w2 & 0xFF);
-            }
-        }
-
-        return $out;
-    }
-
-    /**
-     * given a start position and information about how text is to be laid out, calculate where
-     * on the page the text will end
-     *
-     * @param $x
-     * @param $y
-     * @param $angle
-     * @param $size
-     * @param $wa
-     * @param $text
-     * @return array
-     */
-    private function getTextPosition($x, $y, $angle, $size, $wa, $text)
-    {
-        // given this information return an array containing x and y for the end position as elements 0 and 1
-        $w = $this->getTextWidth($size, $text);
-
-        // need to adjust for the number of spaces in this text
-        $words = explode(' ', $text);
-        $nspaces = count($words) - 1;
-        $w += $wa * $nspaces;
-        $a = deg2rad((float)$angle);
-
-        return [cos($a) * $w + $x, -sin($a) * $w + $y];
-    }
-
-    /**
-     * Callback method used by smallCaps
-     *
-     * @param array $matches
-     *
-     * @return string
-     */
-    function toUpper($matches)
-    {
-        return mb_strtoupper($matches[0]);
-    }
-
-    function concatMatches($matches)
-    {
-        $str = "";
-        foreach ($matches as $match) {
-            $str .= $match[0];
-        }
-
-        return $str;
-    }
-
-    /**
-     * register text for font subsetting
-     *
-     * @param string $font
-     * @param string $text
-     */
-    function registerText($font, $text)
-    {
-        if (!$this->isUnicode || in_array(mb_strtolower(basename($font)), self::$coreFonts)) {
-            return;
-        }
-
-        if (!isset($this->stringSubsets[$font])) {
-            $base_subset = "\u{fffd}\u{fffe}\u{ffff}";
-            $this->stringSubsets[$font] = $this->utf8toCodePointsArray($base_subset);
-        }
-
-        $this->stringSubsets[$font] = array_unique(
-            array_merge($this->stringSubsets[$font], $this->utf8toCodePointsArray($text))
-        );
-    }
-
-    /**
-     * add text to the document, at a specified location, size and angle on the page
-     *
-     * @param float  $x
-     * @param float  $y
-     * @param float  $size
-     * @param string $text
-     * @param float  $angle
-     * @param float  $wordSpaceAdjust
-     * @param float  $charSpaceAdjust
-     * @param bool   $smallCaps
-     */
-    function addText($x, $y, $size, $text, $angle = 0, $wordSpaceAdjust = 0, $charSpaceAdjust = 0, $smallCaps = false)
-    {
-        if (!$this->numFonts) {
-            $this->selectFont($this->defaultFont);
-        }
-
-        $text = str_replace(["\r", "\n"], "", $text);
-
-        // if ($smallCaps) {
-        //     preg_match_all("/(\P{Ll}+)/u", $text, $matches, PREG_SET_ORDER);
-        //     $lower = $this->concatMatches($matches);
-        //     d($lower);
-
-        //     preg_match_all("/(\p{Ll}+)/u", $text, $matches, PREG_SET_ORDER);
-        //     $other = $this->concatMatches($matches);
-        //     d($other);
-
-        //     $text = preg_replace_callback("/\p{Ll}/u", array($this, "toUpper"), $text);
-        // }
-
-        // if there are any open callbacks, then they should be called, to show the start of the line
-        if ($this->nCallback > 0) {
-            for ($i = $this->nCallback; $i > 0; $i--) {
-                // call each function
-                $info = [
-                    'x'         => $x,
-                    'y'         => $y,
-                    'angle'     => $angle,
-                    'status'    => 'sol',
-                    'p'         => $this->callback[$i]['p'],
-                    'nCallback' => $this->callback[$i]['nCallback'],
-                    'height'    => $this->callback[$i]['height'],
-                    'descender' => $this->callback[$i]['descender']
-                ];
-
-                $func = $this->callback[$i]['f'];
-                $this->$func($info);
-            }
-        }
-
-        if ($angle == 0) {
-            $this->addContent(sprintf("\nBT %.3F %.3F Td", $x, $y));
-        } else {
-            $a = deg2rad((float)$angle);
-            $this->addContent(
-                sprintf("\nBT %.3F %.3F %.3F %.3F %.3F %.3F Tm", cos($a), -sin($a), sin($a), cos($a), $x, $y)
-            );
-        }
-
-        if ($wordSpaceAdjust != 0) {
-            $this->addContent(sprintf(" %.3F Tw", $wordSpaceAdjust));
-        }
-
-        if ($charSpaceAdjust != 0) {
-            $this->addContent(sprintf(" %.3F Tc", $charSpaceAdjust));
-        }
-
-        $len = mb_strlen($text);
-        $start = 0;
-
-        if ($start < $len) {
-            $part = $text; // OAR - Don't need this anymore, given that $start always equals zero.  substr($text, $start);
-            $place_text = $this->filterText($part, false);
-            // modify unicode text so that extra word spacing is manually implemented (bug #)
-            if ($this->fonts[$this->currentFont]['isUnicode'] && $wordSpaceAdjust != 0) {
-                $space_scale = 1000 / $size;
-                $place_text = str_replace("\x00\x20", "\x00\x20)\x00\x20" . (-round($space_scale * $wordSpaceAdjust)) . "\x00\x20(", $place_text);
-            }
-            $this->addContent(" /F$this->currentFontNum " . sprintf('%.1F Tf ', $size));
-            $this->addContent(" [($place_text)] TJ");
-        }
-
-        if ($wordSpaceAdjust != 0) {
-            $this->addContent(sprintf(" %.3F Tw", 0));
-        }
-
-        if ($charSpaceAdjust != 0) {
-            $this->addContent(sprintf(" %.3F Tc", 0));
-        }
-
-        $this->addContent(' ET');
-
-        // if there are any open callbacks, then they should be called, to show the end of the line
-        if ($this->nCallback > 0) {
-            for ($i = $this->nCallback; $i > 0; $i--) {
-                // call each function
-                $tmp = $this->getTextPosition($x, $y, $angle, $size, $wordSpaceAdjust, $text);
-                $info = [
-                    'x'         => $tmp[0],
-                    'y'         => $tmp[1],
-                    'angle'     => $angle,
-                    'status'    => 'eol',
-                    'p'         => $this->callback[$i]['p'],
-                    'nCallback' => $this->callback[$i]['nCallback'],
-                    'height'    => $this->callback[$i]['height'],
-                    'descender' => $this->callback[$i]['descender']
-                ];
-                $func = $this->callback[$i]['f'];
-                $this->$func($info);
-            }
-        }
-
-        if ($this->fonts[$this->currentFont]['isSubsetting']) {
-            $this->registerText($this->currentFont, $text);
-        }
-    }
-
-    /**
-     * calculate how wide a given text string will be on a page, at a given size.
-     * this can be called externally, but is also used by the other class functions
-     *
-     * @param float  $size
-     * @param string $text
-     * @param float  $wordSpacing
-     * @param float  $charSpacing
-     *
-     * @return float
-     */
-    public function getTextWidth(float $size, string $text, float $wordSpacing = 0.0, float $charSpacing = 0.0): float
-    {
-        static $ord_cache = [];
-
-        // this function should not change any of the settings, though it will need to
-        // track any directives which change during calculation, so copy them at the start
-        // and put them back at the end.
-        $store_currentTextState = $this->currentTextState;
-
-        if (!$this->numFonts) {
-            $this->selectFont($this->defaultFont);
-        }
-
-        $text = str_replace(["\r", "\n"], "", $text);
-
-        // hmm, this is where it all starts to get tricky - use the font information to
-        // calculate the width of each character, add them up and convert to user units
-        $w = 0;
-        $cf = $this->currentFont;
-        $current_font = $this->fonts[$cf];
-        $space_scale = 1000 / ($size > 0 ? $size : 1);
-
-        if ($current_font['isUnicode']) {
-            // for Unicode, use the code points array to calculate width rather
-            // than just the string itself
-            $unicode = $this->utf8toCodePointsArray($text);
-
-            foreach ($unicode as $char) {
-                // check if we have to replace character
-                if (isset($current_font['differences'][$char])) {
-                    $char = $current_font['differences'][$char];
-                }
-
-                if (isset($current_font['C'][$char])) {
-                    $char_width = $current_font['C'][$char];
-
-                    // add the character width
-                    $w += $char_width;
-
-                    // add additional padding for space
-                    if (isset($current_font['codeToName'][$char]) && $current_font['codeToName'][$char] === 'space') {  // Space
-                        $w += $wordSpacing * $space_scale;
-                    }
-                }
-            }
-
-            // add additional char spacing
-            if ($charSpacing != 0) {
-                $w += $charSpacing * $space_scale * count($unicode);
-            }
-
-        } else {
-            // If CPDF is in Unicode mode but the current font does not support Unicode we need to convert the character set to Windows-1252
-            if ($this->isUnicode) {
-                $text = mb_convert_encoding($text, 'Windows-1252', 'UTF-8');
-            }
-
-            $len = mb_strlen($text, 'Windows-1252');
-
-            for ($i = 0; $i < $len; $i++) {
-                $c = $text[$i];
-                $char = isset($ord_cache[$c]) ? $ord_cache[$c] : ($ord_cache[$c] = ord($c));
-
-                // check if we have to replace character
-                if (isset($current_font['differences'][$char])) {
-                    $char = $current_font['differences'][$char];
-                }
-
-                if (isset($current_font['C'][$char])) {
-                    $char_width = $current_font['C'][$char];
-
-                    // add the character width
-                    $w += $char_width;
-
-                    // add additional padding for space
-                    if (isset($current_font['codeToName'][$char]) && $current_font['codeToName'][$char] === 'space') {  // Space
-                        $w += $wordSpacing * $space_scale;
-                    }
-                }
-            }
-
-            // add additional char spacing
-            if ($charSpacing != 0) {
-                $w += $charSpacing * $space_scale * $len;
-            }
-        }
-
-        $this->currentTextState = $store_currentTextState;
-        $this->setCurrentFont();
-
-        return $w * $size / 1000;
-    }
-
-    /**
-     * this will be called at a new page to return the state to what it was on the
-     * end of the previous page, before the stack was closed down
-     * This is to get around not being able to have open 'q' across pages
-     *
-     * @param int $pageEnd
-     */
-    function saveState($pageEnd = 0)
-    {
-        if ($pageEnd) {
-            // this will be called at a new page to return the state to what it was on the
-            // end of the previous page, before the stack was closed down
-            // This is to get around not being able to have open 'q' across pages
-            $opt = $this->stateStack[$pageEnd];
-            // ok to use this as stack starts numbering at 1
-            $this->setColor($opt['col'], true);
-            $this->setStrokeColor($opt['str'], true);
-            $this->addContent("\n" . $opt['lin']);
-            //    $this->currentLineStyle = $opt['lin'];
-        } else {
-            $this->nStateStack++;
-            $this->stateStack[$this->nStateStack] = [
-                'col' => $this->currentColor,
-                'str' => $this->currentStrokeColor,
-                'lin' => $this->currentLineStyle
-            ];
-        }
-
-        $this->save();
-    }
-
-    /**
-     * restore a previously saved state
-     *
-     * @param int $pageEnd
-     */
-    function restoreState($pageEnd = 0)
-    {
-        if (!$pageEnd) {
-            $n = $this->nStateStack;
-            $this->currentColor = $this->stateStack[$n]['col'];
-            $this->currentStrokeColor = $this->stateStack[$n]['str'];
-            $this->addContent("\n" . $this->stateStack[$n]['lin']);
-            $this->currentLineStyle = $this->stateStack[$n]['lin'];
-            $this->stateStack[$n] = null;
-            unset($this->stateStack[$n]);
-            $this->nStateStack--;
-        }
-
-        $this->restore();
-    }
-
-    /**
-     * make a loose object, the output will go into this object, until it is closed, then will revert to
-     * the current one.
-     * this object will not appear until it is included within a page.
-     * the function will return the object number
-     *
-     * @return int
-     */
-    function openObject()
-    {
-        $this->nStack++;
-        $this->stack[$this->nStack] = ['c' => $this->currentContents, 'p' => $this->currentPage];
-        // add a new object of the content type, to hold the data flow
-        $this->numObj++;
-        $this->o_contents($this->numObj, 'new');
-        $this->currentContents = $this->numObj;
-        $this->looseObjects[$this->numObj] = 1;
-
-        return $this->numObj;
-    }
-
-    /**
-     * open an existing object for editing
-     *
-     * @param $id
-     */
-    function reopenObject($id)
-    {
-        $this->nStack++;
-        $this->stack[$this->nStack] = ['c' => $this->currentContents, 'p' => $this->currentPage];
-        $this->currentContents = $id;
-
-        // also if this object is the primary contents for a page, then set the current page to its parent
-        if (isset($this->objects[$id]['onPage'])) {
-            $this->currentPage = $this->objects[$id]['onPage'];
-        }
-    }
-
-    /**
-     * close an object
-     */
-    function closeObject()
-    {
-        // close the object, as long as there was one open in the first place, which will be indicated by
-        // an objectId on the stack.
-        if ($this->nStack > 0) {
-            $this->currentContents = $this->stack[$this->nStack]['c'];
-            $this->currentPage = $this->stack[$this->nStack]['p'];
-            $this->nStack--;
-            // easier to probably not worry about removing the old entries, they will be overwritten
-            // if there are new ones.
-        }
-    }
-
-    /**
-     * stop an object from appearing on pages from this point on
-     *
-     * @param $id
-     */
-    function stopObject($id)
-    {
-        // if an object has been appearing on pages up to now, then stop it, this page will
-        // be the last one that could contain it.
-        if (isset($this->addLooseObjects[$id])) {
-            $this->addLooseObjects[$id] = '';
-        }
-    }
-
-    /**
-     * after an object has been created, it wil only show if it has been added, using this function.
-     *
-     * @param $id
-     * @param string $options
-     */
-    function addObject($id, $options = 'add')
-    {
-        // add the specified object to the page
-        if (isset($this->looseObjects[$id]) && $this->currentContents != $id) {
-            // then it is a valid object, and it is not being added to itself
-            switch ($options) {
-                case 'all':
-                    // then this object is to be added to this page (done in the next block) and
-                    // all future new pages.
-                    $this->addLooseObjects[$id] = 'all';
-
-                case 'add':
-                    if (isset($this->objects[$this->currentContents]['onPage'])) {
-                        // then the destination contents is the primary for the page
-                        // (though this object is actually added to that page)
-                        $this->o_page($this->objects[$this->currentContents]['onPage'], 'content', $id);
-                    }
-                    break;
-
-                case 'even':
-                    $this->addLooseObjects[$id] = 'even';
-                    $pageObjectId = $this->objects[$this->currentContents]['onPage'];
-                    if ($this->objects[$pageObjectId]['info']['pageNum'] % 2 == 0) {
-                        $this->addObject($id);
-                        // hacky huh :)
-                    }
-                    break;
-
-                case 'odd':
-                    $this->addLooseObjects[$id] = 'odd';
-                    $pageObjectId = $this->objects[$this->currentContents]['onPage'];
-                    if ($this->objects[$pageObjectId]['info']['pageNum'] % 2 == 1) {
-                        $this->addObject($id);
-                        // hacky huh :)
-                    }
-                    break;
-
-                case 'next':
-                    $this->addLooseObjects[$id] = 'all';
-                    break;
-
-                case 'nexteven':
-                    $this->addLooseObjects[$id] = 'even';
-                    break;
-
-                case 'nextodd':
-                    $this->addLooseObjects[$id] = 'odd';
-                    break;
-            }
-        }
-    }
-
-    /**
-     * return a storable representation of a specific object
-     *
-     * @param $id
-     * @return string|null
-     */
-    function serializeObject($id)
-    {
-        if (array_key_exists($id, $this->objects)) {
-            return serialize($this->objects[$id]);
-        }
-
-        return null;
-    }
-
-    /**
-     * restore an object from its stored representation. Returns its new object id.
-     *
-     * @param $obj
-     * @return int
-     */
-    function restoreSerializedObject($obj)
-    {
-        $obj_id = $this->openObject();
-        $this->objects[$obj_id] = unserialize($obj);
-        $this->closeObject();
-
-        return $obj_id;
-    }
-
-    /**
-     * Embeds a file inside the PDF
-     *
-     * @param string $filepath path to the file to store inside the PDF
-     * @param string $embeddedFilename the filename displayed in the list of embedded files
-     * @param string $description a description in the list of embedded files
-     */
-    public function addEmbeddedFile(string $filepath, string $embeddedFilename, string $description): void
-    {
-        $this->numObj++;
-        $this->o_embedded_file_dictionary(
-            $this->numObj,
-            'new',
-            [
-                'filepath' => $filepath,
-                'filename' => $embeddedFilename,
-                'description' => $description
-            ]
-        );
-    }
-
-    /**
-     * Add content to the documents info object
-     *
-     * @param string|array $label
-     * @param string       $value
-     */
-    public function addInfo($label, string $value = ""): void
-    {
-        // this will only work if the label is one of the valid ones.
-        // modify this so that arrays can be passed as well.
-        // if $label is an array then assume that it is key => value pairs
-        // else assume that they are both scalar, anything else will probably error
-        if (is_array($label)) {
-            foreach ($label as $l => $v) {
-                $this->o_info($this->infoObject, $l, (string) $v);
-            }
-        } else {
-            $this->o_info($this->infoObject, $label, $value);
-        }
-    }
-
-    /**
-     * set the viewer preferences of the document, it is up to the browser to obey these.
-     *
-     * @param $label
-     * @param int $value
-     */
-    function setPreferences($label, $value = 0)
-    {
-        // this will only work if the label is one of the valid ones.
-        if (is_array($label)) {
-            foreach ($label as $l => $v) {
-                $this->o_catalog($this->catalogId, 'viewerPreferences', [$l => $v]);
-            }
-        } else {
-            $this->o_catalog($this->catalogId, 'viewerPreferences', [$label => $value]);
-        }
-    }
-
-    /**
-     * extract an integer from a position in a byte stream
-     *
-     * @param $data
-     * @param $pos
-     * @param $num
-     * @return int
-     */
-    private function getBytes(&$data, $pos, $num)
-    {
-        // return the integer represented by $num bytes from $pos within $data
-        $ret = 0;
-        for ($i = 0; $i < $num; $i++) {
-            $ret *= 256;
-            $ret += ord($data[$pos + $i]);
-        }
-
-        return $ret;
-    }
-
-    /**
-     * Check if image already added to pdf image directory.
-     * If yes, need not to create again (pass empty data)
-     *
-     * @param string $imgname
-     * @return bool
-     */
-    function image_iscached($imgname)
-    {
-        return isset($this->imagelist[$imgname]);
-    }
-
-    /**
-     * add a PNG image into the document, from a GD object
-     * this should work with remote files
-     *
-     * @param \GdImage|resource $img A GD resource
-     * @param string $file The PNG file
-     * @param float $x X position
-     * @param float $y Y position
-     * @param float $w Width
-     * @param float $h Height
-     * @param bool $is_mask true if the image is a mask
-     * @param bool $mask true if the image is masked
-     * @throws Exception
-     */
-    function addImagePng(&$img, $file, $x, $y, $w = 0.0, $h = 0.0, $is_mask = false, $mask = null)
-    {
-        if (!function_exists("imagepng")) {
-            throw new \Exception("The PHP GD extension is required, but is not installed.");
-        }
-
-        //if already cached, need not to read again
-        if (isset($this->imagelist[$file])) {
-            $data = null;
-        } else {
-            // Example for transparency handling on new image. Retain for current image
-            // $tIndex = imagecolortransparent($img);
-            // if ($tIndex > 0) {
-            //   $tColor    = imagecolorsforindex($img, $tIndex);
-            //   $new_tIndex    = imagecolorallocate($new_img, $tColor['red'], $tColor['green'], $tColor['blue']);
-            //   imagefill($new_img, 0, 0, $new_tIndex);
-            //   imagecolortransparent($new_img, $new_tIndex);
-            // }
-            // blending mode (literal/blending) on drawing into current image. not relevant when not saved or not drawn
-            //imagealphablending($img, true);
-
-            //default, but explicitely set to ensure pdf compatibility
-            imagesavealpha($img, false/*!$is_mask && !$mask*/);
-
-            $error = 0;
-            //DEBUG_IMG_TEMP
-            //debugpng
-            if (defined("DEBUGPNG") && DEBUGPNG) {
-                print '[addImagePng ' . $file . ']';
-            }
-
-            ob_start();
-            @imagepng($img);
-            $data = ob_get_clean();
-
-            if ($data == '') {
-                $error = 1;
-                $errormsg = 'trouble writing file from GD';
-                //DEBUG_IMG_TEMP
-                //debugpng
-                if (defined("DEBUGPNG") && DEBUGPNG) {
-                    print 'trouble writing file from GD';
-                }
-            }
-
-            if ($error) {
-                $this->addMessage('PNG error - (' . $file . ') ' . $errormsg);
-
-                return;
-            }
-        }  //End isset($this->imagelist[$file]) (png Duplicate removal)
-
-        $this->addPngFromBuf($data, $file, $x, $y, $w, $h, $is_mask, $mask);
-    }
-
-    /**
-     * @param $file
-     * @param $x
-     * @param $y
-     * @param $w
-     * @param $h
-     * @param $byte
-     */
-    protected function addImagePngAlpha($file, $x, $y, $w, $h, $byte)
-    {
-        // generate images
-        $img = @imagecreatefrompng($file);
-
-        if ($img === false) {
-            return;
-        }
-
-        // FIXME The pixel transformation doesn't work well with 8bit PNGs
-        $eight_bit = ($byte & 4) !== 4;
-
-        $wpx = imagesx($img);
-        $hpx = imagesy($img);
-
-        imagesavealpha($img, false);
-
-        // create temp alpha file
-        $tempfile_alpha = @tempnam($this->tmp, "cpdf_img_");
-        @unlink($tempfile_alpha);
-        $tempfile_alpha = "$tempfile_alpha.png";
-
-        // create temp plain file
-        $tempfile_plain = @tempnam($this->tmp, "cpdf_img_");
-        @unlink($tempfile_plain);
-        $tempfile_plain = "$tempfile_plain.png";
-
-        $imgalpha = imagecreate($wpx, $hpx);
-        imagesavealpha($imgalpha, false);
-
-        // generate gray scale palette (0 -> 255)
-        for ($c = 0; $c < 256; ++$c) {
-            imagecolorallocate($imgalpha, $c, $c, $c);
-        }
-
-        // Use PECL gmagick + Graphics Magic to process transparent PNG images
-        if (extension_loaded("gmagick")) {
-            $gmagick = new \Gmagick($file);
-            $gmagick->setimageformat('png');
-
-            // Get opacity channel (negative of alpha channel)
-            $alpha_channel_neg = clone $gmagick;
-            $alpha_channel_neg->separateimagechannel(\Gmagick::CHANNEL_OPACITY);
-
-            // Negate opacity channel
-            $alpha_channel = new \Gmagick();
-            $alpha_channel->newimage($wpx, $hpx, "#FFFFFF", "png");
-            $alpha_channel->compositeimage($alpha_channel_neg, \Gmagick::COMPOSITE_DIFFERENCE, 0, 0);
-            $alpha_channel->separateimagechannel(\Gmagick::CHANNEL_RED);
-            $alpha_channel->writeimage($tempfile_alpha);
-
-            // Cast to 8bit+palette
-            $imgalpha_ = @imagecreatefrompng($tempfile_alpha);
-            imagecopy($imgalpha, $imgalpha_, 0, 0, 0, 0, $wpx, $hpx);
-            imagedestroy($imgalpha_);
-            imagepng($imgalpha, $tempfile_alpha);
-
-            // Make opaque image
-            $color_channels = new \Gmagick();
-            $color_channels->newimage($wpx, $hpx, "#FFFFFF", "png");
-            $color_channels->compositeimage($gmagick, \Gmagick::COMPOSITE_COPYRED, 0, 0);
-            $color_channels->compositeimage($gmagick, \Gmagick::COMPOSITE_COPYGREEN, 0, 0);
-            $color_channels->compositeimage($gmagick, \Gmagick::COMPOSITE_COPYBLUE, 0, 0);
-            $color_channels->writeimage($tempfile_plain);
-
-            $imgplain = @imagecreatefrompng($tempfile_plain);
-        }
-        // Use PECL imagick + ImageMagic to process transparent PNG images
-        elseif (extension_loaded("imagick")) {
-            // Native cloning was added to pecl-imagick in svn commit 263814
-            // the first version containing it was 3.0.1RC1
-            static $imagickClonable = null;
-            if ($imagickClonable === null) {
-                $imagickClonable = true;
-                if (defined('Imagick::IMAGICK_EXTVER')) {
-                    $imagickVersion = \Imagick::IMAGICK_EXTVER;
-                } else {
-                    $imagickVersion = '0';
-                }
-                if (version_compare($imagickVersion, '0.0.1', '>=')) {
-                    $imagickClonable = version_compare($imagickVersion, '3.0.1rc1', '>=');
-                }
-            }
-
-            $imagick = new \Imagick($file);
-            $imagick->setFormat('png');
-
-            // Get opacity channel (negative of alpha channel)
-            if ($imagick->getImageAlphaChannel()) {
-                $alpha_channel = $imagickClonable ? clone $imagick : $imagick->clone();
-                $alpha_channel->separateImageChannel(\Imagick::CHANNEL_ALPHA);
-                // Since ImageMagick7 negate invert transparency as default
-                if (\Imagick::getVersion()['versionNumber'] < 1800) {
-                    $alpha_channel->negateImage(true);
-                }
-                $alpha_channel->writeImage($tempfile_alpha);
-
-                // Cast to 8bit+palette
-                $imgalpha_ = @imagecreatefrompng($tempfile_alpha);
-                imagecopy($imgalpha, $imgalpha_, 0, 0, 0, 0, $wpx, $hpx);
-                imagedestroy($imgalpha_);
-                imagepng($imgalpha, $tempfile_alpha);
-            } else {
-                $tempfile_alpha = null;
-            }
-
-            // Make opaque image
-            $color_channels = new \Imagick();
-            $color_channels->newImage($wpx, $hpx, "#FFFFFF", "png");
-            $color_channels->compositeImage($imagick, \Imagick::COMPOSITE_COPYRED, 0, 0);
-            $color_channels->compositeImage($imagick, \Imagick::COMPOSITE_COPYGREEN, 0, 0);
-            $color_channels->compositeImage($imagick, \Imagick::COMPOSITE_COPYBLUE, 0, 0);
-            $color_channels->writeImage($tempfile_plain);
-
-            $imgplain = @imagecreatefrompng($tempfile_plain);
-        } else {
-            // allocated colors cache
-            $allocated_colors = [];
-
-            // extract alpha channel
-            for ($xpx = 0; $xpx < $wpx; ++$xpx) {
-                for ($ypx = 0; $ypx < $hpx; ++$ypx) {
-                    $color = imagecolorat($img, $xpx, $ypx);
-                    $col = imagecolorsforindex($img, $color);
-                    $alpha = $col['alpha'];
-
-                    if ($eight_bit) {
-                        // with gamma correction
-                        $gammacorr = 2.2;
-                        $pixel = round(pow((((127 - $alpha) * 255 / 127) / 255), $gammacorr) * 255);
-                    } else {
-                        // without gamma correction
-                        $pixel = (127 - $alpha) * 2;
-
-                        $key = $col['red'] . $col['green'] . $col['blue'];
-
-                        if (!isset($allocated_colors[$key])) {
-                            $pixel_img = imagecolorallocate($img, $col['red'], $col['green'], $col['blue']);
-                            $allocated_colors[$key] = $pixel_img;
-                        } else {
-                            $pixel_img = $allocated_colors[$key];
-                        }
-
-                        imagesetpixel($img, $xpx, $ypx, $pixel_img);
-                    }
-
-                    imagesetpixel($imgalpha, $xpx, $ypx, $pixel);
-                }
-            }
-
-            // extract image without alpha channel
-            $imgplain = imagecreatetruecolor($wpx, $hpx);
-            imagecopy($imgplain, $img, 0, 0, 0, 0, $wpx, $hpx);
-            imagedestroy($img);
-
-            imagepng($imgalpha, $tempfile_alpha);
-            imagepng($imgplain, $tempfile_plain);
-        }
-
-        $this->imageAlphaList[$file] = [$tempfile_alpha, $tempfile_plain];
-
-        // embed mask image
-        if ($tempfile_alpha) {
-            $this->addImagePng($imgalpha, $tempfile_alpha, $x, $y, $w, $h, true);
-            imagedestroy($imgalpha);
-            $this->imageCache[] = $tempfile_alpha;
-        }
-
-        // embed image, masked with previously embedded mask
-        $this->addImagePng($imgplain, $tempfile_plain, $x, $y, $w, $h, false, ($tempfile_alpha !== null));
-        imagedestroy($imgplain);
-        $this->imageCache[] = $tempfile_plain;
-    }
-
-    /**
-     * add a PNG image into the document, from a file
-     * this should work with remote files
-     *
-     * @param $file
-     * @param $x
-     * @param $y
-     * @param int $w
-     * @param int $h
-     * @throws Exception
-     */
-    function addPngFromFile($file, $x, $y, $w = 0, $h = 0)
-    {
-        if (!function_exists("imagecreatefrompng")) {
-            throw new \Exception("The PHP GD extension is required, but is not installed.");
-        }
-
-        if (isset($this->imageAlphaList[$file])) {
-            [$alphaFile, $plainFile] = $this->imageAlphaList[$file];
-
-            if ($alphaFile) {
-                $img = null;
-                $this->addImagePng($img, $alphaFile, $x, $y, $w, $h, true);
-            }
-
-            $img = null;
-            $this->addImagePng($img, $plainFile, $x, $y, $w, $h, false, ($plainFile !== null));
-            return;
-        }
-
-        //if already cached, need not to read again
-        if (isset($this->imagelist[$file])) {
-            $img = null;
-        } else {
-            $info = file_get_contents($file, false, null, 24, 5);
-            $meta = unpack("CbitDepth/CcolorType/CcompressionMethod/CfilterMethod/CinterlaceMethod", $info);
-            $bit_depth = $meta["bitDepth"];
-            $color_type = $meta["colorType"];
-
-            // http://www.w3.org/TR/PNG/#11IHDR
-            // 3 => indexed
-            // 4 => greyscale with alpha
-            // 6 => fullcolor with alpha
-            $is_alpha = in_array($color_type, [4, 6]) || ($color_type == 3 && $bit_depth != 4);
-
-            if ($is_alpha) { // exclude grayscale alpha
-                $this->addImagePngAlpha($file, $x, $y, $w, $h, $color_type);
-                return;
-            }
-
-            //png files typically contain an alpha channel.
-            //pdf file format or class.pdf does not support alpha blending.
-            //on alpha blended images, more transparent areas have a color near black.
-            //This appears in the result on not storing the alpha channel.
-            //Correct would be the box background image or its parent when transparent.
-            //But this would make the image dependent on the background.
-            //Therefore create an image with white background and copy in
-            //A more natural background than black is white.
-            //Therefore create an empty image with white background and merge the
-            //image in with alpha blending.
-            $imgtmp = @imagecreatefrompng($file);
-            if (!$imgtmp) {
-                return;
-            }
-            $sx = imagesx($imgtmp);
-            $sy = imagesy($imgtmp);
-            $img = imagecreatetruecolor($sx, $sy);
-            imagealphablending($img, true);
-
-            // @todo is it still needed ??
-            $ti = imagecolortransparent($imgtmp);
-            if ($ti >= 0) {
-                $tc = imagecolorsforindex($imgtmp, $ti);
-                $ti = imagecolorallocate($img, $tc['red'], $tc['green'], $tc['blue']);
-                imagefill($img, 0, 0, $ti);
-                imagecolortransparent($img, $ti);
-            } else {
-                imagefill($img, 1, 1, imagecolorallocate($img, 255, 255, 255));
-            }
-
-            imagecopy($img, $imgtmp, 0, 0, 0, 0, $sx, $sy);
-            imagedestroy($imgtmp);
-        }
-        $this->addImagePng($img, $file, $x, $y, $w, $h);
-
-        if ($img) {
-            imagedestroy($img);
-        }
-    }
-
-    /**
-     * add a PNG image into the document, from a memory buffer of the file
-     *
-     * @param $data
-     * @param $file
-     * @param $x
-     * @param $y
-     * @param float $w
-     * @param float $h
-     * @param bool $is_mask
-     * @param null $mask
-     */
-    function addPngFromBuf(&$data, $file, $x, $y, $w = 0.0, $h = 0.0, $is_mask = false, $mask = null)
-    {
-        if (isset($this->imagelist[$file])) {
-            $data = null;
-            $info['width'] = $this->imagelist[$file]['w'];
-            $info['height'] = $this->imagelist[$file]['h'];
-            $label = $this->imagelist[$file]['label'];
-        } else {
-            if ($data == null) {
-                $this->addMessage('addPngFromBuf error - data not present!');
-
-                return;
-            }
-
-            $error = 0;
-
-            if (!$error) {
-                $header = chr(137) . chr(80) . chr(78) . chr(71) . chr(13) . chr(10) . chr(26) . chr(10);
-
-                if (mb_substr($data, 0, 8, '8bit') != $header) {
-                    $error = 1;
-
-                    if (defined("DEBUGPNG") && DEBUGPNG) {
-                        print '[addPngFromFile this file does not have a valid header ' . $file . ']';
-                    }
-
-                    $errormsg = 'this file does not have a valid header';
-                }
-            }
-
-            if (!$error) {
-                // set pointer
-                $p = 8;
-                $len = mb_strlen($data, '8bit');
-
-                // cycle through the file, identifying chunks
-                $haveHeader = 0;
-                $info = [];
-                $idata = '';
-                $pdata = '';
-
-                while ($p < $len) {
-                    $chunkLen = $this->getBytes($data, $p, 4);
-                    $chunkType = mb_substr($data, $p + 4, 4, '8bit');
-
-                    switch ($chunkType) {
-                        case 'IHDR':
-                            // this is where all the file information comes from
-                            $info['width'] = $this->getBytes($data, $p + 8, 4);
-                            $info['height'] = $this->getBytes($data, $p + 12, 4);
-                            $info['bitDepth'] = ord($data[$p + 16]);
-                            $info['colorType'] = ord($data[$p + 17]);
-                            $info['compressionMethod'] = ord($data[$p + 18]);
-                            $info['filterMethod'] = ord($data[$p + 19]);
-                            $info['interlaceMethod'] = ord($data[$p + 20]);
-
-                            //print_r($info);
-                            $haveHeader = 1;
-                            if ($info['compressionMethod'] != 0) {
-                                $error = 1;
-
-                                //debugpng
-                                if (defined("DEBUGPNG") && DEBUGPNG) {
-                                    print '[addPngFromFile unsupported compression method ' . $file . ']';
-                                }
-
-                                $errormsg = 'unsupported compression method';
-                            }
-
-                            if ($info['filterMethod'] != 0) {
-                                $error = 1;
-
-                                //debugpng
-                                if (defined("DEBUGPNG") && DEBUGPNG) {
-                                    print '[addPngFromFile unsupported filter method ' . $file . ']';
-                                }
-
-                                $errormsg = 'unsupported filter method';
-                            }
-                            break;
-
-                        case 'PLTE':
-                            $pdata .= mb_substr($data, $p + 8, $chunkLen, '8bit');
-                            break;
-
-                        case 'IDAT':
-                            $idata .= mb_substr($data, $p + 8, $chunkLen, '8bit');
-                            break;
-
-                        case 'tRNS':
-                            //this chunk can only occur once and it must occur after the PLTE chunk and before IDAT chunk
-                            //print "tRNS found, color type = ".$info['colorType']."\n";
-                            $transparency = [];
-
-                            switch ($info['colorType']) {
-                                // indexed color, rbg
-                                case 3:
-                                    /* corresponding to entries in the plte chunk
+					}
+				}
+			}
+
+			if ($this->compressionReady && $this->options['compression']) {
+				// then implement ZLIB based compression on CIDtoGID string
+				$data['CIDtoGID_Compressed'] = true;
+				$cidtogid = gzcompress($cidtogid, 6);
+			}
+			$data['CIDtoGID'] = base64_encode($cidtogid);
+			$data['_version_'] = $this->fontcacheVersion;
+			$this->fonts[$font] = $data;
+
+			//Because of potential trouble with php safe mode, expect that the folder already exists.
+			//If not existing, this will hit performance because of missing cached results.
+			if (is_dir($fontcache) && is_writable($fontcache)) {
+				file_put_contents("$fontcache/$cache_name", json_encode($data, JSON_PRETTY_PRINT));
+			}
+			$data = null;
+		}
+
+		if (!isset($this->fonts[$font])) {
+			$this->addMessage("openFont: no font file found for $font. Do you need to run load_font.php?");
+		}
+	}
+
+	/**
+	 * if the font is not loaded then load it and make the required object
+	 * else just make it the current font
+	 * the encoding array can contain 'encoding'=> 'none','WinAnsiEncoding','MacRomanEncoding' or 'MacExpertEncoding'
+	 * note that encoding='none' will need to be used for symbolic fonts
+	 * and 'differences' => an array of mappings between numbers 0->255 and character names.
+	 *
+	 * @param string $fontName
+	 * @param string $encoding
+	 * @param bool $set
+	 * @param bool $isSubsetting
+	 * @return int
+	 * @throws FontNotFoundException
+	 */
+	function selectFont($fontName, $encoding = '', $set = true, $isSubsetting = true)
+	{
+		if ($fontName === null || $fontName === '') {
+			return $this->currentFontNum;
+		}
+
+		$ext = substr($fontName, -4);
+		if ($ext === '.afm' || $ext === '.ufm') {
+			$fontName = substr($fontName, 0, mb_strlen($fontName) - 4);
+		}
+
+		if (!isset($this->fonts[$fontName])) {
+			$this->addMessage("selectFont: selecting - $fontName - $encoding, $set");
+
+			// load the file
+			$this->openFont($fontName);
+
+			if (isset($this->fonts[$fontName])) {
+				$this->numObj++;
+				$this->numFonts++;
+
+				$font = &$this->fonts[$fontName];
+
+				$name = basename($fontName);
+				$options = ['name' => $name, 'fontFileName' => $fontName, 'isSubsetting' => $isSubsetting];
+
+				if (is_array($encoding)) {
+					// then encoding and differences might be set
+					if (isset($encoding['encoding'])) {
+						$options['encoding'] = $encoding['encoding'];
+					}
+
+					if (isset($encoding['differences'])) {
+						$options['differences'] = $encoding['differences'];
+					}
+				} else {
+					if (mb_strlen($encoding, '8bit')) {
+						// then perhaps only the encoding has been set
+						$options['encoding'] = $encoding;
+					}
+				}
+
+				$this->o_font($this->numObj, 'new', $options);
+
+				if (file_exists("$fontName.ttf")) {
+					$fileSuffix = 'ttf';
+				} elseif (file_exists("$fontName.TTF")) {
+					$fileSuffix = 'TTF';
+				} elseif (file_exists("$fontName.pfb")) {
+					$fileSuffix = 'pfb';
+				} elseif (file_exists("$fontName.PFB")) {
+					$fileSuffix = 'PFB';
+				} else {
+					$fileSuffix = '';
+				}
+
+				$font['fileSuffix'] = $fileSuffix;
+
+				$font['fontNum'] = $this->numFonts;
+				$font['isSubsetting'] = $isSubsetting && $font['isUnicode'] && strtolower($fileSuffix) === 'ttf';
+
+				// also set the differences here, note that this means that these will take effect only the
+				//first time that a font is selected, else they are ignored
+				if (isset($options['differences'])) {
+					$font['differences'] = $options['differences'];
+				}
+			}
+		}
+
+		if ($set && isset($this->fonts[$fontName])) {
+			// so if for some reason the font was not set in the last one then it will not be selected
+			$this->currentBaseFont = $fontName;
+
+			// the next lines mean that if a new font is selected, then the current text state will be
+			// applied to it as well.
+			$this->currentFont = $this->currentBaseFont;
+			$this->currentFontNum = $this->fonts[$this->currentFont]['fontNum'];
+		}
+
+		return $this->currentFontNum;
+	}
+
+	/**
+	 * sets up the current font, based on the font families, and the current text state
+	 * note that this system is quite flexible, a bold-italic font can be completely different to a
+	 * italic-bold font, and even bold-bold will have to be defined within the family to have meaning
+	 * This function is to be called whenever the currentTextState is changed, it will update
+	 * the currentFont setting to whatever the appropriate family one is.
+	 * If the user calls selectFont themselves then that will reset the currentBaseFont, and the currentFont
+	 * This function will change the currentFont to whatever it should be, but will not change the
+	 * currentBaseFont.
+	 */
+	private function setCurrentFont()
+	{
+		//   if (strlen($this->currentBaseFont) == 0){
+		//     // then assume an initial font
+		//     $this->selectFont($this->defaultFont);
+		//   }
+		//   $cf = substr($this->currentBaseFont,strrpos($this->currentBaseFont,'/')+1);
+		//   if (strlen($this->currentTextState)
+		//     && isset($this->fontFamilies[$cf])
+		//       && isset($this->fontFamilies[$cf][$this->currentTextState])){
+		//     // then we are in some state or another
+		//     // and this font has a family, and the current setting exists within it
+		//     // select the font, then return it
+		//     $nf = substr($this->currentBaseFont,0,strrpos($this->currentBaseFont,'/')+1).$this->fontFamilies[$cf][$this->currentTextState];
+		//     $this->selectFont($nf,'',0);
+		//     $this->currentFont = $nf;
+		//     $this->currentFontNum = $this->fonts[$nf]['fontNum'];
+		//   } else {
+		//     // the this font must not have the right family member for the current state
+		//     // simply assume the base font
+		$this->currentFont = $this->currentBaseFont;
+		$this->currentFontNum = $this->fonts[$this->currentFont]['fontNum'];
+		//  }
+	}
+
+	/**
+	 * function for the user to find out what the ID is of the first page that was created during
+	 * startup - useful if they wish to add something to it later.
+	 *
+	 * @return int
+	 */
+	function getFirstPageId()
+	{
+		return $this->firstPageId;
+	}
+
+	/**
+	 * add content to the currently active object
+	 *
+	 * @param $content
+	 */
+	private function addContent($content)
+	{
+		$this->objects[$this->currentContents]['c'] .= $content;
+	}
+
+	/**
+	 * sets the color for fill operations
+	 *
+	 * @param array $color
+	 * @param bool  $force
+	 */
+	function setColor($color, $force = false)
+	{
+		$new_color = [$color[0], $color[1], $color[2], isset($color[3]) ? $color[3] : null];
+
+		if (!$force && $this->currentColor == $new_color) {
+			return;
+		}
+
+		if (isset($new_color[3])) {
+			$this->currentColor = $new_color;
+			$this->addContent(vsprintf("\n%.3F %.3F %.3F %.3F k", $this->currentColor));
+		} else {
+			if (isset($new_color[2])) {
+				$this->currentColor = $new_color;
+				$this->addContent(vsprintf("\n%.3F %.3F %.3F rg", $this->currentColor));
+			}
+		}
+	}
+
+	/**
+	 * sets the color for fill operations
+	 *
+	 * @param string $fillRule
+	 */
+	function setFillRule($fillRule)
+	{
+		if (!in_array($fillRule, ["nonzero", "evenodd"])) {
+			return;
+		}
+
+		$this->fillRule = $fillRule;
+	}
+
+	/**
+	 * sets the color for stroke operations
+	 *
+	 * @param array $color
+	 * @param bool  $force
+	 */
+	function setStrokeColor($color, $force = false)
+	{
+		$new_color = [$color[0], $color[1], $color[2], isset($color[3]) ? $color[3] : null];
+
+		if (!$force && $this->currentStrokeColor == $new_color) {
+			return;
+		}
+
+		if (isset($new_color[3])) {
+			$this->currentStrokeColor = $new_color;
+			$this->addContent(vsprintf("\n%.3F %.3F %.3F %.3F K", $this->currentStrokeColor));
+		} else {
+			if (isset($new_color[2])) {
+				$this->currentStrokeColor = $new_color;
+				$this->addContent(vsprintf("\n%.3F %.3F %.3F RG", $this->currentStrokeColor));
+			}
+		}
+	}
+
+	/**
+	 * Set the graphics state for compositions
+	 *
+	 * @param $parameters
+	 */
+	function setGraphicsState($parameters)
+	{
+		// Create a new graphics state object if necessary
+		if (($gstate = array_search($parameters, $this->gstates)) === false) {
+			$this->numObj++;
+			$this->o_extGState($this->numObj, 'new', $parameters);
+			$gstate = $this->numStates;
+			$this->gstates[$gstate] = $parameters;
+		}
+		$this->addContent("\n/GS$gstate gs");
+	}
+
+	/**
+	 * Set current blend mode & opacity for lines.
+	 *
+	 * Valid blend modes are:
+	 *
+	 * Normal, Multiply, Screen, Overlay, Darken, Lighten,
+	 * ColorDogde, ColorBurn, HardLight, SoftLight, Difference,
+	 * Exclusion
+	 *
+	 * @param string $mode    the blend mode to use
+	 * @param float  $opacity 0.0 fully transparent, 1.0 fully opaque
+	 */
+	function setLineTransparency($mode, $opacity)
+	{
+		static $blend_modes = [
+			"Normal",
+			"Multiply",
+			"Screen",
+			"Overlay",
+			"Darken",
+			"Lighten",
+			"ColorDogde",
+			"ColorBurn",
+			"HardLight",
+			"SoftLight",
+			"Difference",
+			"Exclusion"
+		];
+
+		if (!in_array($mode, $blend_modes)) {
+			$mode = "Normal";
+		}
+
+		if (is_null($this->currentLineTransparency)) {
+			$this->currentLineTransparency = [];
+		}
+
+		if ($mode === (key_exists('mode', $this->currentLineTransparency) ?
+			$this->currentLineTransparency['mode'] : '') &&
+			$opacity === (key_exists('opacity', $this->currentLineTransparency) ?
+			$this->currentLineTransparency["opacity"] : '')) {
+			return;
+		}
+
+		$this->currentLineTransparency["mode"] = $mode;
+		$this->currentLineTransparency["opacity"] = $opacity;
+
+		$options = [
+			"BM" => "/$mode",
+			"CA" => (float)$opacity
+		];
+
+		$this->setGraphicsState($options);
+	}
+
+	/**
+	 * Set current blend mode & opacity for filled objects.
+	 *
+	 * Valid blend modes are:
+	 *
+	 * Normal, Multiply, Screen, Overlay, Darken, Lighten,
+	 * ColorDogde, ColorBurn, HardLight, SoftLight, Difference,
+	 * Exclusion
+	 *
+	 * @param string $mode    the blend mode to use
+	 * @param float  $opacity 0.0 fully transparent, 1.0 fully opaque
+	 */
+	function setFillTransparency($mode, $opacity)
+	{
+		static $blend_modes = [
+			"Normal",
+			"Multiply",
+			"Screen",
+			"Overlay",
+			"Darken",
+			"Lighten",
+			"ColorDogde",
+			"ColorBurn",
+			"HardLight",
+			"SoftLight",
+			"Difference",
+			"Exclusion"
+		];
+
+		if (!in_array($mode, $blend_modes)) {
+			$mode = "Normal";
+		}
+
+		if (is_null($this->currentFillTransparency)) {
+			$this->currentFillTransparency = [];
+		}
+
+		if ($mode === (key_exists('mode', $this->currentFillTransparency) ?
+			$this->currentFillTransparency['mode'] : '') &&
+			$opacity === (key_exists('opacity', $this->currentFillTransparency) ?
+			$this->currentFillTransparency["opacity"] : '')) {
+			return;
+		}
+
+		$this->currentFillTransparency["mode"] = $mode;
+		$this->currentFillTransparency["opacity"] = $opacity;
+
+		$options = [
+			"BM" => "/$mode",
+			"ca" => (float)$opacity,
+		];
+
+		$this->setGraphicsState($options);
+	}
+
+	/**
+	 * draw a line from one set of coordinates to another
+	 *
+	 * @param float $x1
+	 * @param float $y1
+	 * @param float $x2
+	 * @param float $y2
+	 * @param bool  $stroke
+	 */
+	function line($x1, $y1, $x2, $y2, $stroke = true)
+	{
+		$this->addContent(sprintf("\n%.3F %.3F m %.3F %.3F l", $x1, $y1, $x2, $y2));
+
+		if ($stroke) {
+			$this->addContent(' S');
+		}
+	}
+
+	/**
+	 * draw a bezier curve based on 4 control points
+	 *
+	 * @param float $x0
+	 * @param float $y0
+	 * @param float $x1
+	 * @param float $y1
+	 * @param float $x2
+	 * @param float $y2
+	 * @param float $x3
+	 * @param float $y3
+	 */
+	function curve($x0, $y0, $x1, $y1, $x2, $y2, $x3, $y3)
+	{
+		// in the current line style, draw a bezier curve from (x0,y0) to (x3,y3) using the other two points
+		// as the control points for the curve.
+		$this->addContent(
+			sprintf("\n%.3F %.3F m %.3F %.3F %.3F %.3F %.3F %.3F c S", $x0, $y0, $x1, $y1, $x2, $y2, $x3, $y3)
+		);
+	}
+
+	/**
+	 * draw a part of an ellipse
+	 *
+	 * @param float $x0
+	 * @param float $y0
+	 * @param float $astart
+	 * @param float $afinish
+	 * @param float $r1
+	 * @param float $r2
+	 * @param float $angle
+	 * @param int $nSeg
+	 */
+	function partEllipse($x0, $y0, $astart, $afinish, $r1, $r2 = 0, $angle = 0, $nSeg = 8)
+	{
+		$this->ellipse($x0, $y0, $r1, $r2, $angle, $nSeg, $astart, $afinish, false);
+	}
+
+	/**
+	 * draw a filled ellipse
+	 *
+	 * @param float $x0
+	 * @param float $y0
+	 * @param float $r1
+	 * @param float $r2
+	 * @param float $angle
+	 * @param int $nSeg
+	 * @param float $astart
+	 * @param float $afinish
+	 */
+	function filledEllipse($x0, $y0, $r1, $r2 = 0, $angle = 0, $nSeg = 8, $astart = 0, $afinish = 360)
+	{
+		$this->ellipse($x0, $y0, $r1, $r2, $angle, $nSeg, $astart, $afinish, true, true);
+	}
+
+	/**
+	 * @param float $x
+	 * @param float $y
+	 */
+	function lineTo($x, $y)
+	{
+		$this->addContent(sprintf("\n%.3F %.3F l", $x, $y));
+	}
+
+	/**
+	 * @param float $x
+	 * @param float $y
+	 */
+	function moveTo($x, $y)
+	{
+		$this->addContent(sprintf("\n%.3F %.3F m", $x, $y));
+	}
+
+	/**
+	 * draw a bezier curve based on 4 control points
+	 *
+	 * @param float $x1
+	 * @param float $y1
+	 * @param float $x2
+	 * @param float $y2
+	 * @param float $x3
+	 * @param float $y3
+	 */
+	function curveTo($x1, $y1, $x2, $y2, $x3, $y3)
+	{
+		$this->addContent(sprintf("\n%.3F %.3F %.3F %.3F %.3F %.3F c", $x1, $y1, $x2, $y2, $x3, $y3));
+	}
+
+	/**
+	 * draw a bezier curve based on 4 control points
+	 *
+	 * @param float $cpx
+	 * @param float $cpy
+	 * @param float $x
+	 * @param float $y
+	 */
+	function quadTo($cpx, $cpy, $x, $y)
+	{
+		$this->addContent(sprintf("\n%.3F %.3F %.3F %.3F v", $cpx, $cpy, $x, $y));
+	}
+
+	function closePath()
+	{
+		$this->addContent(' h');
+	}
+
+	function endPath()
+	{
+		$this->addContent(' n');
+	}
+
+	/**
+	 * draw an ellipse
+	 * note that the part and filled ellipse are just special cases of this function
+	 *
+	 * draws an ellipse in the current line style
+	 * centered at $x0,$y0, radii $r1,$r2
+	 * if $r2 is not set, then a circle is drawn
+	 * from $astart to $afinish, measured in degrees, running anti-clockwise from the right hand side of the ellipse.
+	 * nSeg is not allowed to be less than 2, as this will simply draw a line (and will even draw a
+	 * pretty crappy shape at 2, as we are approximating with bezier curves.
+	 *
+	 * @param float $x0
+	 * @param float $y0
+	 * @param float $r1
+	 * @param float $r2
+	 * @param float $angle
+	 * @param int   $nSeg
+	 * @param float $astart
+	 * @param float $afinish
+	 * @param bool  $close
+	 * @param bool  $fill
+	 * @param bool  $stroke
+	 * @param bool  $incomplete
+	 */
+	function ellipse(
+		$x0,
+		$y0,
+		$r1,
+		$r2 = 0,
+		$angle = 0,
+		$nSeg = 8,
+		$astart = 0,
+		$afinish = 360,
+		$close = true,
+		$fill = false,
+		$stroke = true,
+		$incomplete = false
+	) {
+		if ($r1 == 0) {
+			return;
+		}
+
+		if ($r2 == 0) {
+			$r2 = $r1;
+		}
+
+		if ($nSeg < 2) {
+			$nSeg = 2;
+		}
+
+		$astart = deg2rad((float)$astart);
+		$afinish = deg2rad((float)$afinish);
+		$totalAngle = $afinish - $astart;
+
+		$dt = $totalAngle / $nSeg;
+		$dtm = $dt / 3;
+
+		if ($angle != 0) {
+			$a = -1 * deg2rad((float)$angle);
+
+			$this->addContent(
+				sprintf("\n q %.3F %.3F %.3F %.3F %.3F %.3F cm", cos($a), -sin($a), sin($a), cos($a), $x0, $y0)
+			);
+
+			$x0 = 0;
+			$y0 = 0;
+		}
+
+		$t1 = $astart;
+		$a0 = $x0 + $r1 * cos($t1);
+		$b0 = $y0 + $r2 * sin($t1);
+		$c0 = -$r1 * sin($t1);
+		$d0 = $r2 * cos($t1);
+
+		if (!$incomplete) {
+			$this->addContent(sprintf("\n%.3F %.3F m ", $a0, $b0));
+		}
+
+		for ($i = 1; $i <= $nSeg; $i++) {
+			// draw this bit of the total curve
+			$t1 = $i * $dt + $astart;
+			$a1 = $x0 + $r1 * cos($t1);
+			$b1 = $y0 + $r2 * sin($t1);
+			$c1 = -$r1 * sin($t1);
+			$d1 = $r2 * cos($t1);
+
+			$this->addContent(
+				sprintf(
+					"\n%.3F %.3F %.3F %.3F %.3F %.3F c",
+					($a0 + $c0 * $dtm),
+					($b0 + $d0 * $dtm),
+					($a1 - $c1 * $dtm),
+					($b1 - $d1 * $dtm),
+					$a1,
+					$b1
+				)
+			);
+
+			$a0 = $a1;
+			$b0 = $b1;
+			$c0 = $c1;
+			$d0 = $d1;
+		}
+
+		if (!$incomplete) {
+			if ($fill) {
+				$this->addContent(' f');
+			}
+
+			if ($stroke) {
+				if ($close) {
+					$this->addContent(' s'); // small 's' signifies closing the path as well
+				} else {
+					$this->addContent(' S');
+				}
+			}
+		}
+
+		if ($angle != 0) {
+			$this->addContent(' Q');
+		}
+	}
+
+	/**
+	 * this sets the line drawing style.
+	 * width, is the thickness of the line in user units
+	 * cap is the type of cap to put on the line, values can be 'butt','round','square'
+	 *    where the diffference between 'square' and 'butt' is that 'square' projects a flat end past the
+	 *    end of the line.
+	 * join can be 'miter', 'round', 'bevel'
+	 * dash is an array which sets the dash pattern, is a series of length values, which are the lengths of the
+	 *   on and off dashes.
+	 *   (2) represents 2 on, 2 off, 2 on , 2 off ...
+	 *   (2,1) is 2 on, 1 off, 2 on, 1 off.. etc
+	 * phase is a modifier on the dash pattern which is used to shift the point at which the pattern starts.
+	 *
+	 * @param float  $width
+	 * @param string $cap
+	 * @param string $join
+	 * @param array  $dash
+	 * @param int    $phase
+	 */
+	function setLineStyle($width = 1, $cap = '', $join = '', $dash = '', $phase = 0)
+	{
+		// this is quite inefficient in that it sets all the parameters whenever 1 is changed, but will fix another day
+		$string = '';
+
+		if ($width > 0) {
+			$string .= "$width w";
+		}
+
+		$ca = ['butt' => 0, 'round' => 1, 'square' => 2];
+
+		if (isset($ca[$cap])) {
+			$string .= " $ca[$cap] J";
+		}
+
+		$ja = ['miter' => 0, 'round' => 1, 'bevel' => 2];
+
+		if (isset($ja[$join])) {
+			$string .= " $ja[$join] j";
+		}
+
+		if (is_array($dash)) {
+			$string .= ' [ ' . implode(' ', $dash) . " ] $phase d";
+		}
+
+		$this->currentLineStyle = $string;
+		$this->addContent("\n$string");
+	}
+
+	/**
+	 * draw a polygon, the syntax for this is similar to the GD polygon command
+	 *
+	 * @param float[] $p
+	 * @param bool    $fill
+	 */
+	public function polygon(array $p, bool $fill = false): void
+	{
+		$this->addContent(sprintf("\n%.3F %.3F m ", $p[0], $p[1]));
+
+		$n = count($p);
+		for ($i = 2; $i < $n; $i = $i + 2) {
+			$this->addContent(sprintf("%.3F %.3F l ", $p[$i], $p[$i + 1]));
+		}
+
+		if ($fill) {
+			$this->addContent(' f');
+		} else {
+			$this->addContent(' S');
+		}
+	}
+
+	/**
+	 * a filled rectangle, note that it is the width and height of the rectangle which are the secondary parameters, not
+	 * the coordinates of the upper-right corner
+	 *
+	 * @param float $x1
+	 * @param float $y1
+	 * @param float $width
+	 * @param float $height
+	 */
+	function filledRectangle($x1, $y1, $width, $height)
+	{
+		$this->addContent(sprintf("\n%.3F %.3F %.3F %.3F re f", $x1, $y1, $width, $height));
+	}
+
+	/**
+	 * draw a rectangle, note that it is the width and height of the rectangle which are the secondary parameters, not
+	 * the coordinates of the upper-right corner
+	 *
+	 * @param float $x1
+	 * @param float $y1
+	 * @param float $width
+	 * @param float $height
+	 */
+	function rectangle($x1, $y1, $width, $height)
+	{
+		$this->addContent(sprintf("\n%.3F %.3F %.3F %.3F re S", $x1, $y1, $width, $height));
+	}
+
+	/**
+	 * draw a rectangle, note that it is the width and height of the rectangle which are the secondary parameters, not
+	 * the coordinates of the upper-right corner
+	 *
+	 * @param float $x1
+	 * @param float $y1
+	 * @param float $width
+	 * @param float $height
+	 */
+	function rect($x1, $y1, $width, $height)
+	{
+		$this->addContent(sprintf("\n%.3F %.3F %.3F %.3F re", $x1, $y1, $width, $height));
+	}
+
+	function stroke(bool $close = false)
+	{
+		$this->addContent("\n" . ($close ? "s" : "S"));
+	}
+
+	function fill()
+	{
+		$this->addContent("\nf" . ($this->fillRule === "evenodd" ? "*" : ""));
+	}
+
+	function fillStroke(bool $close = false)
+	{
+		$this->addContent("\n" . ($close ? "b" : "B") . ($this->fillRule === "evenodd" ? "*" : ""));
+	}
+
+	/**
+	 * @param string $subtype
+	 * @param integer $x
+	 * @param integer $y
+	 * @param integer $w
+	 * @param integer $h
+	 * @return int
+	 */
+	function addXObject($subtype, $x, $y, $w, $h)
+	{
+		$id = ++$this->numObj;
+		$this->o_xobject($id, 'new', ['Subtype' => $subtype, 'bbox' => [$x, $y, $w, $h]]);
+		return $id;
+	}
+
+	/**
+	 * @param integer $numXObject
+	 * @param string $type
+	 * @param array $options
+	 */
+	function setXObjectResource($numXObject, $type, $options)
+	{
+		if (in_array($type, ['procset', 'font', 'xObject'])) {
+			$this->o_xobject($numXObject, $type, $options);
+		}
+	}
+
+	/**
+	 * add signature
+	 *
+	 * $fieldSigId = $cpdf->addFormField(Cpdf::ACROFORM_FIELD_SIG, 'Signature1', 0, 0, 0, 0, 0);
+	 *
+	 * $signatureId = $cpdf->addSignature([
+	 *   'signcert' => file_get_contents('dompdf.crt'),
+	 *   'privkey' => file_get_contents('dompdf.key'),
+	 *   'password' => 'password',
+	 *   'name' => 'DomPDF DEMO',
+	 *   'location' => 'Home',
+	 *   'reason' => 'First Form',
+	 *   'contactinfo' => 'info'
+	 * ]);
+	 * $cpdf->setFormFieldValue($fieldSigId, "$signatureId 0 R");
+	 *
+	 * @param string $signcert
+	 * @param string $privkey
+	 * @param string $password
+	 * @param string|null $name
+	 * @param string|null $location
+	 * @param string|null $reason
+	 * @param string|null $contactinfo
+	 * @return int
+	 */
+	function addSignature($signcert, $privkey, $password = '', $name = null, $location = null, $reason = null, $contactinfo = null) {
+		$sigId = ++$this->numObj;
+		$this->o_sig($sigId, 'new', [
+		  'SignCert' => $signcert,
+		  'PrivKey' => $privkey,
+		  'Password' => $password,
+		  'Name' => $name,
+		  'Location' => $location,
+		  'Reason' => $reason,
+		  'ContactInfo' => $contactinfo
+		]);
+
+		return $sigId;
+	}
+
+	/**
+	 * add field to form
+	 *
+	 * @param string $type ACROFORM_FIELD_*
+	 * @param string $name
+	 * @param $x0
+	 * @param $y0
+	 * @param $x1
+	 * @param $y1
+	 * @param integer $ff Field Flag ACROFORM_FIELD_*_*
+	 * @param float $size
+	 * @param array $color
+	 * @return int
+	 */
+	public function addFormField($type, $name, $x0, $y0, $x1, $y1, $ff = 0, $size = 10.0, $color = [0, 0, 0])
+	{
+		if (!$this->numFonts) {
+			$this->selectFont($this->defaultFont);
+		}
+
+		$color = implode(' ', $color) . ' rg';
+
+		$currentFontNum = $this->currentFontNum;
+		$font = array_filter(
+			$this->objects[$this->currentNode]['info']['fonts'],
+			function ($item) use ($currentFontNum) { return $item['fontNum'] == $currentFontNum; }
+		);
+
+		$this->o_acroform($this->acroFormId, 'font',
+		  ['objNum' => $font[0]['objNum'], 'fontNum' => $font[0]['fontNum']]);
+
+		$fieldId = ++$this->numObj;
+		$this->o_field($fieldId, 'new', [
+		  'rect' => [$x0, $y0, $x1, $y1],
+		  'F' => 4,
+		  'FT' => "/$type",
+		  'T' => $name,
+		  'Ff' => $ff,
+		  'pageid' => $this->currentPage,
+		  'da' => "$color /F$this->currentFontNum " . sprintf('%.1F Tf ', $size)
+		]);
+
+		return $fieldId;
+	}
+
+	/**
+	 * set Field value
+	 *
+	 * @param integer $numFieldObj
+	 * @param string $value
+	 */
+	public function setFormFieldValue($numFieldObj, $value)
+	{
+		$this->o_field($numFieldObj, 'set', ['value' => $value]);
+	}
+
+	/**
+	 * set Field value (reference)
+	 *
+	 * @param integer $numFieldObj
+	 * @param integer $numObj Object number
+	 */
+	public function setFormFieldRefValue($numFieldObj, $numObj)
+	{
+		$this->o_field($numFieldObj, 'set', ['refvalue' => $numObj]);
+	}
+
+	/**
+	 * set Field Appearanc (reference)
+	 *
+	 * @param integer $numFieldObj
+	 * @param integer $normalNumObj
+	 * @param integer|null $rolloverNumObj
+	 * @param integer|null $downNumObj
+	 */
+	public function setFormFieldAppearance($numFieldObj, $normalNumObj, $rolloverNumObj = null, $downNumObj = null)
+	{
+		$appearance['N'] = $normalNumObj;
+
+		if ($rolloverNumObj !== null) {
+			$appearance['R'] = $rolloverNumObj;
+		}
+
+		if ($downNumObj !== null) {
+			$appearance['D'] = $downNumObj;
+		}
+
+		$this->o_field($numFieldObj, 'set', ['appearance' => $appearance]);
+	}
+
+	/**
+	 * set Choice Field option values
+	 *
+	 * @param integer $numFieldObj
+	 * @param array $value
+	 */
+	public function setFormFieldOpt($numFieldObj, $value)
+	{
+		$this->o_field($numFieldObj, 'set', ['options' => $value]);
+	}
+
+	/**
+	 * add form to document
+	 *
+	 * @param integer $sigFlags
+	 * @param boolean $needAppearances
+	 */
+	public function addForm($sigFlags = 0, $needAppearances = false)
+	{
+		$this->acroFormId = ++$this->numObj;
+		$this->o_acroform($this->acroFormId, 'new', [
+		  'NeedAppearances' => $needAppearances ? 'true' : 'false',
+		  'SigFlags' => $sigFlags
+		]);
+	}
+
+	/**
+	 * save the current graphic state
+	 */
+	function save()
+	{
+		// we must reset the color cache or it will keep bad colors after clipping
+		$this->currentColor = null;
+		$this->currentStrokeColor = null;
+		$this->addContent("\nq");
+	}
+
+	/**
+	 * restore the last graphic state
+	 */
+	function restore()
+	{
+		// we must reset the color cache or it will keep bad colors after clipping
+		$this->currentColor = null;
+		$this->currentStrokeColor = null;
+		$this->addContent("\nQ");
+	}
+
+	/**
+	 * draw a clipping rectangle, all the elements added after this will be clipped
+	 *
+	 * @param float $x1
+	 * @param float $y1
+	 * @param float $width
+	 * @param float $height
+	 */
+	function clippingRectangle($x1, $y1, $width, $height)
+	{
+		$this->save();
+		$this->addContent(sprintf("\n%.3F %.3F %.3F %.3F re W n", $x1, $y1, $width, $height));
+	}
+
+	/**
+	 * draw a clipping rounded rectangle, all the elements added after this will be clipped
+	 *
+	 * @param float $x1
+	 * @param float $y1
+	 * @param float $w
+	 * @param float $h
+	 * @param float $rTL
+	 * @param float $rTR
+	 * @param float $rBR
+	 * @param float $rBL
+	 */
+	function clippingRectangleRounded($x1, $y1, $w, $h, $rTL, $rTR, $rBR, $rBL)
+	{
+		$this->save();
+
+		// start: top edge, left end
+		$this->addContent(sprintf("\n%.3F %.3F m ", $x1, $y1 - $rTL + $h));
+
+		// line: bottom edge, left end
+		$this->addContent(sprintf("\n%.3F %.3F l ", $x1, $y1 + $rBL));
+
+		// curve: bottom-left corner
+		$this->ellipse($x1 + $rBL, $y1 + $rBL, $rBL, 0, 0, 8, 180, 270, false, false, false, true);
+
+		// line: right edge, bottom end
+		$this->addContent(sprintf("\n%.3F %.3F l ", $x1 + $w - $rBR, $y1));
+
+		// curve: bottom-right corner
+		$this->ellipse($x1 + $w - $rBR, $y1 + $rBR, $rBR, 0, 0, 8, 270, 360, false, false, false, true);
+
+		// line: right edge, top end
+		$this->addContent(sprintf("\n%.3F %.3F l ", $x1 + $w, $y1 + $h - $rTR));
+
+		// curve: bottom-right corner
+		$this->ellipse($x1 + $w - $rTR, $y1 + $h - $rTR, $rTR, 0, 0, 8, 0, 90, false, false, false, true);
+
+		// line: bottom edge, right end
+		$this->addContent(sprintf("\n%.3F %.3F l ", $x1 + $rTL, $y1 + $h));
+
+		// curve: top-right corner
+		$this->ellipse($x1 + $rTL, $y1 + $h - $rTL, $rTL, 0, 0, 8, 90, 180, false, false, false, true);
+
+		// line: top edge, left end
+		$this->addContent(sprintf("\n%.3F %.3F l ", $x1 + $rBL, $y1));
+
+		// Close & clip
+		$this->addContent(" W n");
+	}
+
+	/**
+	 * draw a clipping polygon, the syntax for this is similar to the GD polygon command
+	 *
+	 * @param float[] $p
+	 */
+	public function clippingPolygon(array $p): void
+	{
+		$this->save();
+
+		$this->addContent(sprintf("\n%.3F %.3F m ", $p[0], $p[1]));
+
+		$n = count($p);
+		for ($i = 2; $i < $n; $i = $i + 2) {
+			$this->addContent(sprintf("%.3F %.3F l ", $p[$i], $p[$i + 1]));
+		}
+
+		$this->addContent("W n");
+	}
+
+	/**
+	 * ends the last clipping shape
+	 */
+	function clippingEnd()
+	{
+		$this->restore();
+	}
+
+	/**
+	 * scale
+	 *
+	 * @param float $s_x scaling factor for width as percent
+	 * @param float $s_y scaling factor for height as percent
+	 * @param float $x   Origin abscissa
+	 * @param float $y   Origin ordinate
+	 */
+	function scale($s_x, $s_y, $x, $y)
+	{
+		$y = $this->currentPageSize["height"] - $y;
+
+		$tm = [
+			$s_x,
+			0,
+			0,
+			$s_y,
+			$x * (1 - $s_x),
+			$y * (1 - $s_y)
+		];
+
+		$this->transform($tm);
+	}
+
+	/**
+	 * translate
+	 *
+	 * @param float $t_x movement to the right
+	 * @param float $t_y movement to the bottom
+	 */
+	function translate($t_x, $t_y)
+	{
+		$tm = [
+			1,
+			0,
+			0,
+			1,
+			$t_x,
+			-$t_y
+		];
+
+		$this->transform($tm);
+	}
+
+	/**
+	 * rotate
+	 *
+	 * @param float $angle angle in degrees for counter-clockwise rotation
+	 * @param float $x     Origin abscissa
+	 * @param float $y     Origin ordinate
+	 */
+	function rotate($angle, $x, $y)
+	{
+		$y = $this->currentPageSize["height"] - $y;
+
+		$a = deg2rad($angle);
+		$cos_a = cos($a);
+		$sin_a = sin($a);
+
+		$tm = [
+			$cos_a,
+			-$sin_a,
+			$sin_a,
+			$cos_a,
+			$x - $sin_a * $y - $cos_a * $x,
+			$y - $cos_a * $y + $sin_a * $x,
+		];
+
+		$this->transform($tm);
+	}
+
+	/**
+	 * skew
+	 *
+	 * @param float $angle_x
+	 * @param float $angle_y
+	 * @param float $x Origin abscissa
+	 * @param float $y Origin ordinate
+	 */
+	function skew($angle_x, $angle_y, $x, $y)
+	{
+		$y = $this->currentPageSize["height"] - $y;
+
+		$tan_x = tan(deg2rad($angle_x));
+		$tan_y = tan(deg2rad($angle_y));
+
+		$tm = [
+			1,
+			-$tan_y,
+			-$tan_x,
+			1,
+			$tan_x * $y,
+			$tan_y * $x,
+		];
+
+		$this->transform($tm);
+	}
+
+	/**
+	 * apply graphic transformations
+	 *
+	 * @param array $tm transformation matrix
+	 */
+	function transform($tm)
+	{
+		$this->addContent(vsprintf("\n %.3F %.3F %.3F %.3F %.3F %.3F cm", $tm));
+	}
+
+	/**
+	 * add a new page to the document
+	 * this also makes the new page the current active object
+	 *
+	 * @param int $insert
+	 * @param int $id
+	 * @param string $pos
+	 * @return int
+	 */
+	function newPage($insert = 0, $id = 0, $pos = 'after')
+	{
+		// if there is a state saved, then go up the stack closing them
+		// then on the new page, re-open them with the right setings
+
+		if ($this->nStateStack) {
+			for ($i = $this->nStateStack; $i >= 1; $i--) {
+				$this->restoreState($i);
+			}
+		}
+
+		$this->numObj++;
+
+		if ($insert) {
+			// the id from the ezPdf class is the id of the contents of the page, not the page object itself
+			// query that object to find the parent
+			$rid = $this->objects[$id]['onPage'];
+			$opt = ['rid' => $rid, 'pos' => $pos];
+			$this->o_page($this->numObj, 'new', $opt);
+		} else {
+			$this->o_page($this->numObj, 'new');
+		}
+
+		// if there is a stack saved, then put that onto the page
+		if ($this->nStateStack) {
+			for ($i = 1; $i <= $this->nStateStack; $i++) {
+				$this->saveState($i);
+			}
+		}
+
+		// and if there has been a stroke or fill color set, then transfer them
+		if (isset($this->currentColor)) {
+			$this->setColor($this->currentColor, true);
+		}
+
+		if (isset($this->currentStrokeColor)) {
+			$this->setStrokeColor($this->currentStrokeColor, true);
+		}
+
+		// if there is a line style set, then put this in too
+		if (mb_strlen($this->currentLineStyle, '8bit')) {
+			$this->addContent("\n$this->currentLineStyle");
+		}
+
+		// the call to the o_page object set currentContents to the present page, so this can be returned as the page id
+		return $this->currentContents;
+	}
+
+	/**
+	 * Streams the PDF to the client.
+	 *
+	 * @param string $filename The filename to present to the client.
+	 * @param array $options Associative array: 'compress' => 1 or 0 (default 1); 'Attachment' => 1 or 0 (default 1).
+	 */
+	function stream($filename = "document.pdf", $options = [])
+	{
+		if (headers_sent()) {
+			die("Unable to stream pdf: headers already sent");
+		}
+
+		if (!isset($options["compress"])) $options["compress"] = true;
+		if (!isset($options["Attachment"])) $options["Attachment"] = true;
+
+		$debug = !$options['compress'];
+		$tmp = ltrim($this->output($debug));
+
+		header("Cache-Control: private");
+		header("Content-Type: application/pdf");
+		header("Content-Length: " . mb_strlen($tmp, "8bit"));
+
+		$filename = str_replace(["\n", "'"], "", basename($filename, ".pdf")) . ".pdf";
+		$attachment = $options["Attachment"] ? "attachment" : "inline";
+
+		$encoding = mb_detect_encoding($filename);
+		$fallbackfilename = mb_convert_encoding($filename, "ISO-8859-1", $encoding);
+		$fallbackfilename = str_replace("\"", "", $fallbackfilename);
+		$encodedfilename = rawurlencode($filename);
+
+		$contentDisposition = "Content-Disposition: $attachment; filename=\"$fallbackfilename\"";
+		if ($fallbackfilename !== $filename) {
+			$contentDisposition .= "; filename*=UTF-8''$encodedfilename";
+		}
+		header($contentDisposition);
+
+		echo $tmp;
+		flush();
+	}
+
+	/**
+	 * return the height in units of the current font in the given size
+	 *
+	 * @param float $size
+	 *
+	 * @return float
+	 */
+	public function getFontHeight(float $size): float
+	{
+		if (!$this->numFonts) {
+			$this->selectFont($this->defaultFont);
+		}
+
+		$font = $this->fonts[$this->currentFont];
+
+		// for the current font, and the given size, what is the height of the font in user units
+		if (isset($font['Ascender']) && isset($font['Descender'])) {
+			$h = $font['Ascender'] - $font['Descender'];
+		} else {
+			$h = $font['FontBBox'][3] - $font['FontBBox'][1];
+		}
+
+		// have to adjust by a font offset for Windows fonts.  unfortunately it looks like
+		// the bounding box calculations are wrong and I don't know why.
+		if (isset($font['FontHeightOffset'])) {
+			// For CourierNew from Windows this needs to be -646 to match the
+			// Adobe native Courier font.
+			//
+			// For FreeMono from GNU this needs to be -337 to match the
+			// Courier font.
+			//
+			// Both have been added manually to the .afm and .ufm files.
+			$h += (int)$font['FontHeightOffset'];
+		}
+
+		return $size * $h / 1000;
+	}
+
+	/**
+	 * @param float $size
+	 *
+	 * @return float
+	 */
+	public function getFontXHeight(float $size): float
+	{
+		if (!$this->numFonts) {
+			$this->selectFont($this->defaultFont);
+		}
+
+		$font = $this->fonts[$this->currentFont];
+
+		// for the current font, and the given size, what is the height of the font in user units
+		if (isset($font['XHeight'])) {
+			$xh = $font['Ascender'] - $font['Descender'];
+		} else {
+			$xh = $this->getFontHeight($size) / 2;
+		}
+
+		return $size * $xh / 1000;
+	}
+
+	/**
+	 * return the font descender, this will normally return a negative number
+	 * if you add this number to the baseline, you get the level of the bottom of the font
+	 * it is in the pdf user units
+	 *
+	 * @param float $size
+	 *
+	 * @return float
+	 */
+	public function getFontDescender(float $size): float
+	{
+		// note that this will most likely return a negative value
+		if (!$this->numFonts) {
+			$this->selectFont($this->defaultFont);
+		}
+
+		//$h = $this->fonts[$this->currentFont]['FontBBox'][1];
+		$h = $this->fonts[$this->currentFont]['Descender'];
+
+		return $size * $h / 1000;
+	}
+
+	/**
+	 * filter the text, this is applied to all text just before being inserted into the pdf document
+	 * it escapes the various things that need to be escaped, and so on
+	 *
+	 * @param $text
+	 * @param bool $bom
+	 * @param bool $convert_encoding
+	 * @return string
+	 */
+	function filterText($text, $bom = true, $convert_encoding = true)
+	{
+		if (!$this->numFonts) {
+			$this->selectFont($this->defaultFont);
+		}
+
+		if ($convert_encoding) {
+			$cf = $this->currentFont;
+			if (isset($this->fonts[$cf]) && $this->fonts[$cf]['isUnicode']) {
+				$text = $this->utf8toUtf16BE($text, $bom);
+			} else {
+				//$text = html_entity_decode($text, ENT_QUOTES);
+				$text = mb_convert_encoding($text, self::$targetEncoding, 'UTF-8');
+			}
+		} elseif ($bom) {
+			$text = $this->utf8toUtf16BE($text, $bom);
+		}
+
+		// the chr(13) substitution fixes a bug seen in TCPDF (bug #1421290)
+		return strtr($text, [')' => '\\)', '(' => '\\(', '\\' => '\\\\', chr(13) => '\r']);
+	}
+
+	/**
+	 * return array containing codepoints (UTF-8 character values) for the
+	 * string passed in.
+	 *
+	 * based on the excellent TCPDF code by Nicola Asuni and the
+	 * RFC for UTF-8 at http://www.faqs.org/rfcs/rfc3629.html
+	 *
+	 * @param string $text UTF-8 string to process
+	 * @return array UTF-8 codepoints array for the string
+	 */
+	function utf8toCodePointsArray(&$text)
+	{
+		$length = mb_strlen($text, '8bit'); // http://www.php.net/manual/en/function.mb-strlen.php#77040
+		$unicode = []; // array containing unicode values
+		$bytes = []; // array containing single character byte sequences
+		$numbytes = 1; // number of octets needed to represent the UTF-8 character
+
+		for ($i = 0; $i < $length; $i++) {
+			$c = ord($text[$i]); // get one string character at time
+			if (count($bytes) === 0) { // get starting octect
+				if ($c <= 0x7F) {
+					$unicode[] = $c; // use the character "as is" because is ASCII
+					$numbytes = 1;
+				} elseif (($c >> 0x05) === 0x06) { // 2 bytes character (0x06 = 110 BIN)
+					$bytes[] = ($c - 0xC0) << 0x06;
+					$numbytes = 2;
+				} elseif (($c >> 0x04) === 0x0E) { // 3 bytes character (0x0E = 1110 BIN)
+					$bytes[] = ($c - 0xE0) << 0x0C;
+					$numbytes = 3;
+				} elseif (($c >> 0x03) === 0x1E) { // 4 bytes character (0x1E = 11110 BIN)
+					$bytes[] = ($c - 0xF0) << 0x12;
+					$numbytes = 4;
+				} else {
+					// use replacement character for other invalid sequences
+					$unicode[] = 0xFFFD;
+					$bytes = [];
+					$numbytes = 1;
+				}
+			} elseif (($c >> 0x06) === 0x02) { // bytes 2, 3 and 4 must start with 0x02 = 10 BIN
+				$bytes[] = $c - 0x80;
+				if (count($bytes) === $numbytes) {
+					// compose UTF-8 bytes to a single unicode value
+					$c = $bytes[0];
+					for ($j = 1; $j < $numbytes; $j++) {
+						$c += ($bytes[$j] << (($numbytes - $j - 1) * 0x06));
+					}
+					if ((($c >= 0xD800) and ($c <= 0xDFFF)) or ($c >= 0x10FFFF)) {
+						// The definition of UTF-8 prohibits encoding character numbers between
+						// U+D800 and U+DFFF, which are reserved for use with the UTF-16
+						// encoding form (as surrogate pairs) and do not directly represent
+						// characters.
+						$unicode[] = 0xFFFD; // use replacement character
+					} else {
+						$unicode[] = $c; // add char to array
+					}
+					// reset data for next char
+					$bytes = [];
+					$numbytes = 1;
+				}
+			} else {
+				// use replacement character for other invalid sequences
+				$unicode[] = 0xFFFD;
+				$bytes = [];
+				$numbytes = 1;
+			}
+		}
+
+		return $unicode;
+	}
+
+	/**
+	 * convert UTF-8 to UTF-16 with an additional byte order marker
+	 * at the front if required.
+	 *
+	 * based on the excellent TCPDF code by Nicola Asuni and the
+	 * RFC for UTF-8 at http://www.faqs.org/rfcs/rfc3629.html
+	 *
+	 * @param string  $text UTF-8 string to process
+	 * @param boolean $bom  whether to add the byte order marker
+	 * @return string UTF-16 result string
+	 */
+	function utf8toUtf16BE(&$text, $bom = true)
+	{
+		$out = $bom ? "\xFE\xFF" : '';
+
+		$unicode = $this->utf8toCodePointsArray($text);
+		foreach ($unicode as $c) {
+			if ($c === 0xFFFD) {
+				$out .= "\xFF\xFD"; // replacement character
+			} elseif ($c < 0x10000) {
+				$out .= chr($c >> 0x08) . chr($c & 0xFF);
+			} else {
+				$c -= 0x10000;
+				$w1 = 0xD800 | ($c >> 0x10);
+				$w2 = 0xDC00 | ($c & 0x3FF);
+				$out .= chr($w1 >> 0x08) . chr($w1 & 0xFF) . chr($w2 >> 0x08) . chr($w2 & 0xFF);
+			}
+		}
+
+		return $out;
+	}
+
+	/**
+	 * given a start position and information about how text is to be laid out, calculate where
+	 * on the page the text will end
+	 *
+	 * @param $x
+	 * @param $y
+	 * @param $angle
+	 * @param $size
+	 * @param $wa
+	 * @param $text
+	 * @return array
+	 */
+	private function getTextPosition($x, $y, $angle, $size, $wa, $text)
+	{
+		// given this information return an array containing x and y for the end position as elements 0 and 1
+		$w = $this->getTextWidth($size, $text);
+
+		// need to adjust for the number of spaces in this text
+		$words = explode(' ', $text);
+		$nspaces = count($words) - 1;
+		$w += $wa * $nspaces;
+		$a = deg2rad((float)$angle);
+
+		return [cos($a) * $w + $x, -sin($a) * $w + $y];
+	}
+
+	/**
+	 * Callback method used by smallCaps
+	 *
+	 * @param array $matches
+	 *
+	 * @return string
+	 */
+	function toUpper($matches)
+	{
+		return mb_strtoupper($matches[0]);
+	}
+
+	function concatMatches($matches)
+	{
+		$str = "";
+		foreach ($matches as $match) {
+			$str .= $match[0];
+		}
+
+		return $str;
+	}
+
+	/**
+	 * register text for font subsetting
+	 *
+	 * @param string $font
+	 * @param string $text
+	 */
+	function registerText($font, $text)
+	{
+		if (!$this->isUnicode || in_array(mb_strtolower(basename($font)), self::$coreFonts)) {
+			return;
+		}
+
+		if (!isset($this->stringSubsets[$font])) {
+			$base_subset = "\u{fffd}\u{fffe}\u{ffff}";
+			$this->stringSubsets[$font] = $this->utf8toCodePointsArray($base_subset);
+		}
+
+		$this->stringSubsets[$font] = array_unique(
+			array_merge($this->stringSubsets[$font], $this->utf8toCodePointsArray($text))
+		);
+	}
+
+	/**
+	 * add text to the document, at a specified location, size and angle on the page
+	 *
+	 * @param float  $x
+	 * @param float  $y
+	 * @param float  $size
+	 * @param string $text
+	 * @param float  $angle
+	 * @param float  $wordSpaceAdjust
+	 * @param float  $charSpaceAdjust
+	 * @param bool   $smallCaps
+	 */
+	function addText($x, $y, $size, $text, $angle = 0, $wordSpaceAdjust = 0, $charSpaceAdjust = 0, $smallCaps = false)
+	{
+		if (!$this->numFonts) {
+			$this->selectFont($this->defaultFont);
+		}
+
+		$text = str_replace(["\r", "\n"], "", $text);
+
+		// if ($smallCaps) {
+		//     preg_match_all("/(\P{Ll}+)/u", $text, $matches, PREG_SET_ORDER);
+		//     $lower = $this->concatMatches($matches);
+		//     d($lower);
+
+		//     preg_match_all("/(\p{Ll}+)/u", $text, $matches, PREG_SET_ORDER);
+		//     $other = $this->concatMatches($matches);
+		//     d($other);
+
+		//     $text = preg_replace_callback("/\p{Ll}/u", array($this, "toUpper"), $text);
+		// }
+
+		// if there are any open callbacks, then they should be called, to show the start of the line
+		if ($this->nCallback > 0) {
+			for ($i = $this->nCallback; $i > 0; $i--) {
+				// call each function
+				$info = [
+					'x'         => $x,
+					'y'         => $y,
+					'angle'     => $angle,
+					'status'    => 'sol',
+					'p'         => $this->callback[$i]['p'],
+					'nCallback' => $this->callback[$i]['nCallback'],
+					'height'    => $this->callback[$i]['height'],
+					'descender' => $this->callback[$i]['descender']
+				];
+
+				$func = $this->callback[$i]['f'];
+				$this->$func($info);
+			}
+		}
+
+		if ($angle == 0) {
+			$this->addContent(sprintf("\nBT %.3F %.3F Td", $x, $y));
+		} else {
+			$a = deg2rad((float)$angle);
+			$this->addContent(
+				sprintf("\nBT %.3F %.3F %.3F %.3F %.3F %.3F Tm", cos($a), -sin($a), sin($a), cos($a), $x, $y)
+			);
+		}
+
+		if ($wordSpaceAdjust != 0) {
+			$this->addContent(sprintf(" %.3F Tw", $wordSpaceAdjust));
+		}
+
+		if ($charSpaceAdjust != 0) {
+			$this->addContent(sprintf(" %.3F Tc", $charSpaceAdjust));
+		}
+
+		$len = mb_strlen($text);
+		$start = 0;
+
+		if ($start < $len) {
+			$part = $text; // OAR - Don't need this anymore, given that $start always equals zero.  substr($text, $start);
+			$place_text = $this->filterText($part, false);
+			// modify unicode text so that extra word spacing is manually implemented (bug #)
+			if ($this->fonts[$this->currentFont]['isUnicode'] && $wordSpaceAdjust != 0) {
+				$space_scale = 1000 / $size;
+				$place_text = str_replace("\x00\x20", "\x00\x20)\x00\x20" . (-round($space_scale * $wordSpaceAdjust)) . "\x00\x20(", $place_text);
+			}
+			$this->addContent(" /F$this->currentFontNum " . sprintf('%.1F Tf ', $size));
+			$this->addContent(" [($place_text)] TJ");
+		}
+
+		if ($wordSpaceAdjust != 0) {
+			$this->addContent(sprintf(" %.3F Tw", 0));
+		}
+
+		if ($charSpaceAdjust != 0) {
+			$this->addContent(sprintf(" %.3F Tc", 0));
+		}
+
+		$this->addContent(' ET');
+
+		// if there are any open callbacks, then they should be called, to show the end of the line
+		if ($this->nCallback > 0) {
+			for ($i = $this->nCallback; $i > 0; $i--) {
+				// call each function
+				$tmp = $this->getTextPosition($x, $y, $angle, $size, $wordSpaceAdjust, $text);
+				$info = [
+					'x'         => $tmp[0],
+					'y'         => $tmp[1],
+					'angle'     => $angle,
+					'status'    => 'eol',
+					'p'         => $this->callback[$i]['p'],
+					'nCallback' => $this->callback[$i]['nCallback'],
+					'height'    => $this->callback[$i]['height'],
+					'descender' => $this->callback[$i]['descender']
+				];
+				$func = $this->callback[$i]['f'];
+				$this->$func($info);
+			}
+		}
+
+		if ($this->fonts[$this->currentFont]['isSubsetting']) {
+			$this->registerText($this->currentFont, $text);
+		}
+	}
+
+	/**
+	 * calculate how wide a given text string will be on a page, at a given size.
+	 * this can be called externally, but is also used by the other class functions
+	 *
+	 * @param float  $size
+	 * @param string $text
+	 * @param float  $wordSpacing
+	 * @param float  $charSpacing
+	 *
+	 * @return float
+	 */
+	public function getTextWidth(float $size, string $text, float $wordSpacing = 0.0, float $charSpacing = 0.0): float
+	{
+		static $ord_cache = [];
+
+		// this function should not change any of the settings, though it will need to
+		// track any directives which change during calculation, so copy them at the start
+		// and put them back at the end.
+		$store_currentTextState = $this->currentTextState;
+
+		if (!$this->numFonts) {
+			$this->selectFont($this->defaultFont);
+		}
+
+		$text = str_replace(["\r", "\n"], "", $text);
+
+		// hmm, this is where it all starts to get tricky - use the font information to
+		// calculate the width of each character, add them up and convert to user units
+		$w = 0;
+		$cf = $this->currentFont;
+		$current_font = $this->fonts[$cf];
+		$space_scale = 1000 / ($size > 0 ? $size : 1);
+
+		if ($current_font['isUnicode']) {
+			// for Unicode, use the code points array to calculate width rather
+			// than just the string itself
+			$unicode = $this->utf8toCodePointsArray($text);
+
+			foreach ($unicode as $char) {
+				// check if we have to replace character
+				if (isset($current_font['differences'][$char])) {
+					$char = $current_font['differences'][$char];
+				}
+
+				if (isset($current_font['C'][$char])) {
+					$char_width = $current_font['C'][$char];
+
+					// add the character width
+					$w += $char_width;
+
+					// add additional padding for space
+					if (isset($current_font['codeToName'][$char]) && $current_font['codeToName'][$char] === 'space') {  // Space
+						$w += $wordSpacing * $space_scale;
+					}
+				}
+			}
+
+			// add additional char spacing
+			if ($charSpacing != 0) {
+				$w += $charSpacing * $space_scale * count($unicode);
+			}
+
+		} else {
+			// If CPDF is in Unicode mode but the current font does not support Unicode we need to convert the character set to Windows-1252
+			if ($this->isUnicode) {
+				$text = mb_convert_encoding($text, 'Windows-1252', 'UTF-8');
+			}
+
+			$len = mb_strlen($text, 'Windows-1252');
+
+			for ($i = 0; $i < $len; $i++) {
+				$c = $text[$i];
+				$char = isset($ord_cache[$c]) ? $ord_cache[$c] : ($ord_cache[$c] = ord($c));
+
+				// check if we have to replace character
+				if (isset($current_font['differences'][$char])) {
+					$char = $current_font['differences'][$char];
+				}
+
+				if (isset($current_font['C'][$char])) {
+					$char_width = $current_font['C'][$char];
+
+					// add the character width
+					$w += $char_width;
+
+					// add additional padding for space
+					if (isset($current_font['codeToName'][$char]) && $current_font['codeToName'][$char] === 'space') {  // Space
+						$w += $wordSpacing * $space_scale;
+					}
+				}
+			}
+
+			// add additional char spacing
+			if ($charSpacing != 0) {
+				$w += $charSpacing * $space_scale * $len;
+			}
+		}
+
+		$this->currentTextState = $store_currentTextState;
+		$this->setCurrentFont();
+
+		return $w * $size / 1000;
+	}
+
+	/**
+	 * this will be called at a new page to return the state to what it was on the
+	 * end of the previous page, before the stack was closed down
+	 * This is to get around not being able to have open 'q' across pages
+	 *
+	 * @param int $pageEnd
+	 */
+	function saveState($pageEnd = 0)
+	{
+		if ($pageEnd) {
+			// this will be called at a new page to return the state to what it was on the
+			// end of the previous page, before the stack was closed down
+			// This is to get around not being able to have open 'q' across pages
+			$opt = $this->stateStack[$pageEnd];
+			// ok to use this as stack starts numbering at 1
+			$this->setColor($opt['col'], true);
+			$this->setStrokeColor($opt['str'], true);
+			$this->addContent("\n" . $opt['lin']);
+			//    $this->currentLineStyle = $opt['lin'];
+		} else {
+			$this->nStateStack++;
+			$this->stateStack[$this->nStateStack] = [
+				'col' => $this->currentColor,
+				'str' => $this->currentStrokeColor,
+				'lin' => $this->currentLineStyle
+			];
+		}
+
+		$this->save();
+	}
+
+	/**
+	 * restore a previously saved state
+	 *
+	 * @param int $pageEnd
+	 */
+	function restoreState($pageEnd = 0)
+	{
+		if (!$pageEnd) {
+			$n = $this->nStateStack;
+			$this->currentColor = $this->stateStack[$n]['col'];
+			$this->currentStrokeColor = $this->stateStack[$n]['str'];
+			$this->addContent("\n" . $this->stateStack[$n]['lin']);
+			$this->currentLineStyle = $this->stateStack[$n]['lin'];
+			$this->stateStack[$n] = null;
+			unset($this->stateStack[$n]);
+			$this->nStateStack--;
+		}
+
+		$this->restore();
+	}
+
+	/**
+	 * make a loose object, the output will go into this object, until it is closed, then will revert to
+	 * the current one.
+	 * this object will not appear until it is included within a page.
+	 * the function will return the object number
+	 *
+	 * @return int
+	 */
+	function openObject()
+	{
+		$this->nStack++;
+		$this->stack[$this->nStack] = ['c' => $this->currentContents, 'p' => $this->currentPage];
+		// add a new object of the content type, to hold the data flow
+		$this->numObj++;
+		$this->o_contents($this->numObj, 'new');
+		$this->currentContents = $this->numObj;
+		$this->looseObjects[$this->numObj] = 1;
+
+		return $this->numObj;
+	}
+
+	/**
+	 * open an existing object for editing
+	 *
+	 * @param $id
+	 */
+	function reopenObject($id)
+	{
+		$this->nStack++;
+		$this->stack[$this->nStack] = ['c' => $this->currentContents, 'p' => $this->currentPage];
+		$this->currentContents = $id;
+
+		// also if this object is the primary contents for a page, then set the current page to its parent
+		if (isset($this->objects[$id]['onPage'])) {
+			$this->currentPage = $this->objects[$id]['onPage'];
+		}
+	}
+
+	/**
+	 * close an object
+	 */
+	function closeObject()
+	{
+		// close the object, as long as there was one open in the first place, which will be indicated by
+		// an objectId on the stack.
+		if ($this->nStack > 0) {
+			$this->currentContents = $this->stack[$this->nStack]['c'];
+			$this->currentPage = $this->stack[$this->nStack]['p'];
+			$this->nStack--;
+			// easier to probably not worry about removing the old entries, they will be overwritten
+			// if there are new ones.
+		}
+	}
+
+	/**
+	 * stop an object from appearing on pages from this point on
+	 *
+	 * @param $id
+	 */
+	function stopObject($id)
+	{
+		// if an object has been appearing on pages up to now, then stop it, this page will
+		// be the last one that could contain it.
+		if (isset($this->addLooseObjects[$id])) {
+			$this->addLooseObjects[$id] = '';
+		}
+	}
+
+	/**
+	 * after an object has been created, it wil only show if it has been added, using this function.
+	 *
+	 * @param $id
+	 * @param string $options
+	 */
+	function addObject($id, $options = 'add')
+	{
+		// add the specified object to the page
+		if (isset($this->looseObjects[$id]) && $this->currentContents != $id) {
+			// then it is a valid object, and it is not being added to itself
+			switch ($options) {
+				case 'all':
+					// then this object is to be added to this page (done in the next block) and
+					// all future new pages.
+					$this->addLooseObjects[$id] = 'all';
+
+				case 'add':
+					if (isset($this->objects[$this->currentContents]['onPage'])) {
+						// then the destination contents is the primary for the page
+						// (though this object is actually added to that page)
+						$this->o_page($this->objects[$this->currentContents]['onPage'], 'content', $id);
+					}
+					break;
+
+				case 'even':
+					$this->addLooseObjects[$id] = 'even';
+					$pageObjectId = $this->objects[$this->currentContents]['onPage'];
+					if ($this->objects[$pageObjectId]['info']['pageNum'] % 2 == 0) {
+						$this->addObject($id);
+						// hacky huh :)
+					}
+					break;
+
+				case 'odd':
+					$this->addLooseObjects[$id] = 'odd';
+					$pageObjectId = $this->objects[$this->currentContents]['onPage'];
+					if ($this->objects[$pageObjectId]['info']['pageNum'] % 2 == 1) {
+						$this->addObject($id);
+						// hacky huh :)
+					}
+					break;
+
+				case 'next':
+					$this->addLooseObjects[$id] = 'all';
+					break;
+
+				case 'nexteven':
+					$this->addLooseObjects[$id] = 'even';
+					break;
+
+				case 'nextodd':
+					$this->addLooseObjects[$id] = 'odd';
+					break;
+			}
+		}
+	}
+
+	/**
+	 * return a storable representation of a specific object
+	 *
+	 * @param $id
+	 * @return string|null
+	 */
+	function serializeObject($id)
+	{
+		if (array_key_exists($id, $this->objects)) {
+			return serialize($this->objects[$id]);
+		}
+
+		return null;
+	}
+
+	/**
+	 * restore an object from its stored representation. Returns its new object id.
+	 *
+	 * @param $obj
+	 * @return int
+	 */
+	function restoreSerializedObject($obj)
+	{
+		$obj_id = $this->openObject();
+		$this->objects[$obj_id] = unserialize($obj);
+		$this->closeObject();
+
+		return $obj_id;
+	}
+
+	/**
+	 * Embeds a file inside the PDF
+	 *
+	 * @param string $filepath path to the file to store inside the PDF
+	 * @param string $embeddedFilename the filename displayed in the list of embedded files
+	 * @param string $description a description in the list of embedded files
+	 */
+	public function addEmbeddedFile(string $filepath, string $embeddedFilename, string $description): void
+	{
+		$this->numObj++;
+		$this->o_embedded_file_dictionary(
+			$this->numObj,
+			'new',
+			[
+				'filepath' => $filepath,
+				'filename' => $embeddedFilename,
+				'description' => $description
+			]
+		);
+	}
+
+	/**
+	 * Add content to the documents info object
+	 *
+	 * @param string|array $label
+	 * @param string       $value
+	 */
+	public function addInfo($label, string $value = ""): void
+	{
+		// this will only work if the label is one of the valid ones.
+		// modify this so that arrays can be passed as well.
+		// if $label is an array then assume that it is key => value pairs
+		// else assume that they are both scalar, anything else will probably error
+		if (is_array($label)) {
+			foreach ($label as $l => $v) {
+				$this->o_info($this->infoObject, $l, (string) $v);
+			}
+		} else {
+			$this->o_info($this->infoObject, $label, $value);
+		}
+	}
+
+	/**
+	 * set the viewer preferences of the document, it is up to the browser to obey these.
+	 *
+	 * @param $label
+	 * @param int $value
+	 */
+	function setPreferences($label, $value = 0)
+	{
+		// this will only work if the label is one of the valid ones.
+		if (is_array($label)) {
+			foreach ($label as $l => $v) {
+				$this->o_catalog($this->catalogId, 'viewerPreferences', [$l => $v]);
+			}
+		} else {
+			$this->o_catalog($this->catalogId, 'viewerPreferences', [$label => $value]);
+		}
+	}
+
+	/**
+	 * extract an integer from a position in a byte stream
+	 *
+	 * @param $data
+	 * @param $pos
+	 * @param $num
+	 * @return int
+	 */
+	private function getBytes(&$data, $pos, $num)
+	{
+		// return the integer represented by $num bytes from $pos within $data
+		$ret = 0;
+		for ($i = 0; $i < $num; $i++) {
+			$ret *= 256;
+			$ret += ord($data[$pos + $i]);
+		}
+
+		return $ret;
+	}
+
+	/**
+	 * Check if image already added to pdf image directory.
+	 * If yes, need not to create again (pass empty data)
+	 *
+	 * @param string $imgname
+	 * @return bool
+	 */
+	function image_iscached($imgname)
+	{
+		return isset($this->imagelist[$imgname]);
+	}
+
+	/**
+	 * add a PNG image into the document, from a GD object
+	 * this should work with remote files
+	 *
+	 * @param \GdImage|resource $img A GD resource
+	 * @param string $file The PNG file
+	 * @param float $x X position
+	 * @param float $y Y position
+	 * @param float $w Width
+	 * @param float $h Height
+	 * @param bool $is_mask true if the image is a mask
+	 * @param bool $mask true if the image is masked
+	 * @throws Exception
+	 */
+	function addImagePng(&$img, $file, $x, $y, $w = 0.0, $h = 0.0, $is_mask = false, $mask = null)
+	{
+		if (!function_exists("imagepng")) {
+			throw new \Exception("The PHP GD extension is required, but is not installed.");
+		}
+
+		//if already cached, need not to read again
+		if (isset($this->imagelist[$file])) {
+			$data = null;
+		} else {
+			// Example for transparency handling on new image. Retain for current image
+			// $tIndex = imagecolortransparent($img);
+			// if ($tIndex > 0) {
+			//   $tColor    = imagecolorsforindex($img, $tIndex);
+			//   $new_tIndex    = imagecolorallocate($new_img, $tColor['red'], $tColor['green'], $tColor['blue']);
+			//   imagefill($new_img, 0, 0, $new_tIndex);
+			//   imagecolortransparent($new_img, $new_tIndex);
+			// }
+			// blending mode (literal/blending) on drawing into current image. not relevant when not saved or not drawn
+			//imagealphablending($img, true);
+
+			//default, but explicitely set to ensure pdf compatibility
+			imagesavealpha($img, false/*!$is_mask && !$mask*/);
+
+			$error = 0;
+			//DEBUG_IMG_TEMP
+			//debugpng
+			if (defined("DEBUGPNG") && DEBUGPNG) {
+				print '[addImagePng ' . $file . ']';
+			}
+
+			ob_start();
+			@imagepng($img);
+			$data = ob_get_clean();
+
+			if ($data == '') {
+				$error = 1;
+				$errormsg = 'trouble writing file from GD';
+				//DEBUG_IMG_TEMP
+				//debugpng
+				if (defined("DEBUGPNG") && DEBUGPNG) {
+					print 'trouble writing file from GD';
+				}
+			}
+
+			if ($error) {
+				$this->addMessage('PNG error - (' . $file . ') ' . $errormsg);
+
+				return;
+			}
+		}  //End isset($this->imagelist[$file]) (png Duplicate removal)
+
+		$this->addPngFromBuf($data, $file, $x, $y, $w, $h, $is_mask, $mask);
+	}
+
+	/**
+	 * @param $file
+	 * @param $x
+	 * @param $y
+	 * @param $w
+	 * @param $h
+	 * @param $byte
+	 */
+	protected function addImagePngAlpha($file, $x, $y, $w, $h, $byte)
+	{
+		// generate images
+		$img = @imagecreatefrompng($file);
+
+		if ($img === false) {
+			return;
+		}
+
+		// FIXME The pixel transformation doesn't work well with 8bit PNGs
+		$eight_bit = ($byte & 4) !== 4;
+
+		$wpx = imagesx($img);
+		$hpx = imagesy($img);
+
+		imagesavealpha($img, false);
+
+		// create temp alpha file
+		$tempfile_alpha = @tempnam($this->tmp, "cpdf_img_");
+		@unlink($tempfile_alpha);
+		$tempfile_alpha = "$tempfile_alpha.png";
+
+		// create temp plain file
+		$tempfile_plain = @tempnam($this->tmp, "cpdf_img_");
+		@unlink($tempfile_plain);
+		$tempfile_plain = "$tempfile_plain.png";
+
+		$imgalpha = imagecreate($wpx, $hpx);
+		imagesavealpha($imgalpha, false);
+
+		// generate gray scale palette (0 -> 255)
+		for ($c = 0; $c < 256; ++$c) {
+			imagecolorallocate($imgalpha, $c, $c, $c);
+		}
+
+		// Use PECL gmagick + Graphics Magic to process transparent PNG images
+		if (extension_loaded("gmagick")) {
+			$gmagick = new \Gmagick($file);
+			$gmagick->setimageformat('png');
+
+			// Get opacity channel (negative of alpha channel)
+			$alpha_channel_neg = clone $gmagick;
+			$alpha_channel_neg->separateimagechannel(\Gmagick::CHANNEL_OPACITY);
+
+			// Negate opacity channel
+			$alpha_channel = new \Gmagick();
+			$alpha_channel->newimage($wpx, $hpx, "#FFFFFF", "png");
+			$alpha_channel->compositeimage($alpha_channel_neg, \Gmagick::COMPOSITE_DIFFERENCE, 0, 0);
+			$alpha_channel->separateimagechannel(\Gmagick::CHANNEL_RED);
+			$alpha_channel->writeimage($tempfile_alpha);
+
+			// Cast to 8bit+palette
+			$imgalpha_ = @imagecreatefrompng($tempfile_alpha);
+			imagecopy($imgalpha, $imgalpha_, 0, 0, 0, 0, $wpx, $hpx);
+			imagedestroy($imgalpha_);
+			imagepng($imgalpha, $tempfile_alpha);
+
+			// Make opaque image
+			$color_channels = new \Gmagick();
+			$color_channels->newimage($wpx, $hpx, "#FFFFFF", "png");
+			$color_channels->compositeimage($gmagick, \Gmagick::COMPOSITE_COPYRED, 0, 0);
+			$color_channels->compositeimage($gmagick, \Gmagick::COMPOSITE_COPYGREEN, 0, 0);
+			$color_channels->compositeimage($gmagick, \Gmagick::COMPOSITE_COPYBLUE, 0, 0);
+			$color_channels->writeimage($tempfile_plain);
+
+			$imgplain = @imagecreatefrompng($tempfile_plain);
+		}
+		// Use PECL imagick + ImageMagic to process transparent PNG images
+		elseif (extension_loaded("imagick")) {
+			// Native cloning was added to pecl-imagick in svn commit 263814
+			// the first version containing it was 3.0.1RC1
+			static $imagickClonable = null;
+			if ($imagickClonable === null) {
+				$imagickClonable = true;
+				if (defined('Imagick::IMAGICK_EXTVER')) {
+					$imagickVersion = \Imagick::IMAGICK_EXTVER;
+				} else {
+					$imagickVersion = '0';
+				}
+				if (version_compare($imagickVersion, '0.0.1', '>=')) {
+					$imagickClonable = version_compare($imagickVersion, '3.0.1rc1', '>=');
+				}
+			}
+
+			$imagick = new \Imagick($file);
+			$imagick->setFormat('png');
+
+			// Get opacity channel (negative of alpha channel)
+			if ($imagick->getImageAlphaChannel()) {
+				$alpha_channel = $imagickClonable ? clone $imagick : $imagick->clone();
+				$alpha_channel->separateImageChannel(\Imagick::CHANNEL_ALPHA);
+				// Since ImageMagick7 negate invert transparency as default
+				if (\Imagick::getVersion()['versionNumber'] < 1800) {
+					$alpha_channel->negateImage(true);
+				}
+				$alpha_channel->writeImage($tempfile_alpha);
+
+				// Cast to 8bit+palette
+				$imgalpha_ = @imagecreatefrompng($tempfile_alpha);
+				imagecopy($imgalpha, $imgalpha_, 0, 0, 0, 0, $wpx, $hpx);
+				imagedestroy($imgalpha_);
+				imagepng($imgalpha, $tempfile_alpha);
+			} else {
+				$tempfile_alpha = null;
+			}
+
+			// Make opaque image
+			$color_channels = new \Imagick();
+			$color_channels->newImage($wpx, $hpx, "#FFFFFF", "png");
+			$color_channels->compositeImage($imagick, \Imagick::COMPOSITE_COPYRED, 0, 0);
+			$color_channels->compositeImage($imagick, \Imagick::COMPOSITE_COPYGREEN, 0, 0);
+			$color_channels->compositeImage($imagick, \Imagick::COMPOSITE_COPYBLUE, 0, 0);
+			$color_channels->writeImage($tempfile_plain);
+
+			$imgplain = @imagecreatefrompng($tempfile_plain);
+		} else {
+			// allocated colors cache
+			$allocated_colors = [];
+
+			// extract alpha channel
+			for ($xpx = 0; $xpx < $wpx; ++$xpx) {
+				for ($ypx = 0; $ypx < $hpx; ++$ypx) {
+					$color = imagecolorat($img, $xpx, $ypx);
+					$col = imagecolorsforindex($img, $color);
+					$alpha = $col['alpha'];
+
+					if ($eight_bit) {
+						// with gamma correction
+						$gammacorr = 2.2;
+						$pixel = round(pow((((127 - $alpha) * 255 / 127) / 255), $gammacorr) * 255);
+					} else {
+						// without gamma correction
+						$pixel = (127 - $alpha) * 2;
+
+						$key = $col['red'] . $col['green'] . $col['blue'];
+
+						if (!isset($allocated_colors[$key])) {
+							$pixel_img = imagecolorallocate($img, $col['red'], $col['green'], $col['blue']);
+							$allocated_colors[$key] = $pixel_img;
+						} else {
+							$pixel_img = $allocated_colors[$key];
+						}
+
+						imagesetpixel($img, $xpx, $ypx, $pixel_img);
+					}
+
+					imagesetpixel($imgalpha, $xpx, $ypx, $pixel);
+				}
+			}
+
+			// extract image without alpha channel
+			$imgplain = imagecreatetruecolor($wpx, $hpx);
+			imagecopy($imgplain, $img, 0, 0, 0, 0, $wpx, $hpx);
+			imagedestroy($img);
+
+			imagepng($imgalpha, $tempfile_alpha);
+			imagepng($imgplain, $tempfile_plain);
+		}
+
+		$this->imageAlphaList[$file] = [$tempfile_alpha, $tempfile_plain];
+
+		// embed mask image
+		if ($tempfile_alpha) {
+			$this->addImagePng($imgalpha, $tempfile_alpha, $x, $y, $w, $h, true);
+			imagedestroy($imgalpha);
+			$this->imageCache[] = $tempfile_alpha;
+		}
+
+		// embed image, masked with previously embedded mask
+		$this->addImagePng($imgplain, $tempfile_plain, $x, $y, $w, $h, false, ($tempfile_alpha !== null));
+		imagedestroy($imgplain);
+		$this->imageCache[] = $tempfile_plain;
+	}
+
+	/**
+	 * add a PNG image into the document, from a file
+	 * this should work with remote files
+	 *
+	 * @param $file
+	 * @param $x
+	 * @param $y
+	 * @param int $w
+	 * @param int $h
+	 * @throws Exception
+	 */
+	function addPngFromFile($file, $x, $y, $w = 0, $h = 0)
+	{
+		if (!function_exists("imagecreatefrompng")) {
+			throw new \Exception("The PHP GD extension is required, but is not installed.");
+		}
+
+		if (isset($this->imageAlphaList[$file])) {
+			[$alphaFile, $plainFile] = $this->imageAlphaList[$file];
+
+			if ($alphaFile) {
+				$img = null;
+				$this->addImagePng($img, $alphaFile, $x, $y, $w, $h, true);
+			}
+
+			$img = null;
+			$this->addImagePng($img, $plainFile, $x, $y, $w, $h, false, ($plainFile !== null));
+			return;
+		}
+
+		//if already cached, need not to read again
+		if (isset($this->imagelist[$file])) {
+			$img = null;
+		} else {
+			$info = file_get_contents($file, false, null, 24, 5);
+			$meta = unpack("CbitDepth/CcolorType/CcompressionMethod/CfilterMethod/CinterlaceMethod", $info);
+			$bit_depth = $meta["bitDepth"];
+			$color_type = $meta["colorType"];
+
+			// http://www.w3.org/TR/PNG/#11IHDR
+			// 3 => indexed
+			// 4 => greyscale with alpha
+			// 6 => fullcolor with alpha
+			$is_alpha = in_array($color_type, [4, 6]) || ($color_type == 3 && $bit_depth != 4);
+
+			if ($is_alpha) { // exclude grayscale alpha
+				$this->addImagePngAlpha($file, $x, $y, $w, $h, $color_type);
+				return;
+			}
+
+			//png files typically contain an alpha channel.
+			//pdf file format or class.pdf does not support alpha blending.
+			//on alpha blended images, more transparent areas have a color near black.
+			//This appears in the result on not storing the alpha channel.
+			//Correct would be the box background image or its parent when transparent.
+			//But this would make the image dependent on the background.
+			//Therefore create an image with white background and copy in
+			//A more natural background than black is white.
+			//Therefore create an empty image with white background and merge the
+			//image in with alpha blending.
+			$imgtmp = @imagecreatefrompng($file);
+			if (!$imgtmp) {
+				return;
+			}
+			$sx = imagesx($imgtmp);
+			$sy = imagesy($imgtmp);
+			$img = imagecreatetruecolor($sx, $sy);
+			imagealphablending($img, true);
+
+			// @todo is it still needed ??
+			$ti = imagecolortransparent($imgtmp);
+			if ($ti >= 0) {
+				$tc = imagecolorsforindex($imgtmp, $ti);
+				$ti = imagecolorallocate($img, $tc['red'], $tc['green'], $tc['blue']);
+				imagefill($img, 0, 0, $ti);
+				imagecolortransparent($img, $ti);
+			} else {
+				imagefill($img, 1, 1, imagecolorallocate($img, 255, 255, 255));
+			}
+
+			imagecopy($img, $imgtmp, 0, 0, 0, 0, $sx, $sy);
+			imagedestroy($imgtmp);
+		}
+		$this->addImagePng($img, $file, $x, $y, $w, $h);
+
+		if ($img) {
+			imagedestroy($img);
+		}
+	}
+
+	/**
+	 * add a PNG image into the document, from a memory buffer of the file
+	 *
+	 * @param $data
+	 * @param $file
+	 * @param $x
+	 * @param $y
+	 * @param float $w
+	 * @param float $h
+	 * @param bool $is_mask
+	 * @param null $mask
+	 */
+	function addPngFromBuf(&$data, $file, $x, $y, $w = 0.0, $h = 0.0, $is_mask = false, $mask = null)
+	{
+		if (isset($this->imagelist[$file])) {
+			$data = null;
+			$info['width'] = $this->imagelist[$file]['w'];
+			$info['height'] = $this->imagelist[$file]['h'];
+			$label = $this->imagelist[$file]['label'];
+		} else {
+			if ($data == null) {
+				$this->addMessage('addPngFromBuf error - data not present!');
+
+				return;
+			}
+
+			$error = 0;
+
+			if (!$error) {
+				$header = chr(137) . chr(80) . chr(78) . chr(71) . chr(13) . chr(10) . chr(26) . chr(10);
+
+				if (mb_substr($data, 0, 8, '8bit') != $header) {
+					$error = 1;
+
+					if (defined("DEBUGPNG") && DEBUGPNG) {
+						print '[addPngFromFile this file does not have a valid header ' . $file . ']';
+					}
+
+					$errormsg = 'this file does not have a valid header';
+				}
+			}
+
+			if (!$error) {
+				// set pointer
+				$p = 8;
+				$len = mb_strlen($data, '8bit');
+
+				// cycle through the file, identifying chunks
+				$haveHeader = 0;
+				$info = [];
+				$idata = '';
+				$pdata = '';
+
+				while ($p < $len) {
+					$chunkLen = $this->getBytes($data, $p, 4);
+					$chunkType = mb_substr($data, $p + 4, 4, '8bit');
+
+					switch ($chunkType) {
+						case 'IHDR':
+							// this is where all the file information comes from
+							$info['width'] = $this->getBytes($data, $p + 8, 4);
+							$info['height'] = $this->getBytes($data, $p + 12, 4);
+							$info['bitDepth'] = ord($data[$p + 16]);
+							$info['colorType'] = ord($data[$p + 17]);
+							$info['compressionMethod'] = ord($data[$p + 18]);
+							$info['filterMethod'] = ord($data[$p + 19]);
+							$info['interlaceMethod'] = ord($data[$p + 20]);
+
+							//print_r($info);
+							$haveHeader = 1;
+							if ($info['compressionMethod'] != 0) {
+								$error = 1;
+
+								//debugpng
+								if (defined("DEBUGPNG") && DEBUGPNG) {
+									print '[addPngFromFile unsupported compression method ' . $file . ']';
+								}
+
+								$errormsg = 'unsupported compression method';
+							}
+
+							if ($info['filterMethod'] != 0) {
+								$error = 1;
+
+								//debugpng
+								if (defined("DEBUGPNG") && DEBUGPNG) {
+									print '[addPngFromFile unsupported filter method ' . $file . ']';
+								}
+
+								$errormsg = 'unsupported filter method';
+							}
+							break;
+
+						case 'PLTE':
+							$pdata .= mb_substr($data, $p + 8, $chunkLen, '8bit');
+							break;
+
+						case 'IDAT':
+							$idata .= mb_substr($data, $p + 8, $chunkLen, '8bit');
+							break;
+
+						case 'tRNS':
+							//this chunk can only occur once and it must occur after the PLTE chunk and before IDAT chunk
+							//print "tRNS found, color type = ".$info['colorType']."\n";
+							$transparency = [];
+
+							switch ($info['colorType']) {
+								// indexed color, rbg
+								case 3:
+									/* corresponding to entries in the plte chunk
                                      Alpha for palette index 0: 1 byte
                                      Alpha for palette index 1: 1 byte
                                      ...etc...
                                     */
-                                    // there will be one entry for each palette entry. up until the last non-opaque entry.
-                                    // set up an array, stretching over all palette entries which will be o (opaque) or 1 (transparent)
-                                    $transparency['type'] = 'indexed';
-                                    $trans = 0;
-
-                                    for ($i = $chunkLen; $i >= 0; $i--) {
-                                        if (ord($data[$p + 8 + $i]) == 0) {
-                                            $trans = $i;
-                                        }
-                                    }
-
-                                    $transparency['data'] = $trans;
-                                    break;
-
-                                // grayscale
-                                case 0:
-                                    /* corresponding to entries in the plte chunk
+									// there will be one entry for each palette entry. up until the last non-opaque entry.
+									// set up an array, stretching over all palette entries which will be o (opaque) or 1 (transparent)
+									$transparency['type'] = 'indexed';
+									$trans = 0;
+
+									for ($i = $chunkLen; $i >= 0; $i--) {
+										if (ord($data[$p + 8 + $i]) == 0) {
+											$trans = $i;
+										}
+									}
+
+									$transparency['data'] = $trans;
+									break;
+
+								// grayscale
+								case 0:
+									/* corresponding to entries in the plte chunk
                                      Gray: 2 bytes, range 0 .. (2^bitdepth)-1
                                     */
-                                    //            $transparency['grayscale'] = $this->PRVT_getBytes($data,$p+8,2); // g = grayscale
-                                    $transparency['type'] = 'indexed';
-                                    $transparency['data'] = ord($data[$p + 8 + 1]);
-                                    break;
-
-                                // truecolor
-                                case 2:
-                                    /* corresponding to entries in the plte chunk
+									//            $transparency['grayscale'] = $this->PRVT_getBytes($data,$p+8,2); // g = grayscale
+									$transparency['type'] = 'indexed';
+									$transparency['data'] = ord($data[$p + 8 + 1]);
+									break;
+
+								// truecolor
+								case 2:
+									/* corresponding to entries in the plte chunk
                                      Red: 2 bytes, range 0 .. (2^bitdepth)-1
                                      Green: 2 bytes, range 0 .. (2^bitdepth)-1
                                      Blue: 2 bytes, range 0 .. (2^bitdepth)-1
                                     */
-                                    $transparency['r'] = $this->getBytes($data, $p + 8, 2);
-                                    // r from truecolor
-                                    $transparency['g'] = $this->getBytes($data, $p + 10, 2);
-                                    // g from truecolor
-                                    $transparency['b'] = $this->getBytes($data, $p + 12, 2);
-                                    // b from truecolor
-
-                                    $transparency['type'] = 'color-key';
-                                    break;
-
-                                //unsupported transparency type
-                                default:
-                                    if (defined("DEBUGPNG") && DEBUGPNG) {
-                                        print '[addPngFromFile unsupported transparency type ' . $file . ']';
-                                    }
-                                    break;
-                            }
-
-                            // KS End new code
-                            break;
-
-                        default:
-                            break;
-                    }
-
-                    $p += $chunkLen + 12;
-                }
-
-                if (!$haveHeader) {
-                    $error = 1;
-
-                    //debugpng
-                    if (defined("DEBUGPNG") && DEBUGPNG) {
-                        print '[addPngFromFile information header is missing ' . $file . ']';
-                    }
-
-                    $errormsg = 'information header is missing';
-                }
-
-                if (isset($info['interlaceMethod']) && $info['interlaceMethod']) {
-                    $error = 1;
-
-                    //debugpng
-                    if (defined("DEBUGPNG") && DEBUGPNG) {
-                        print '[addPngFromFile no support for interlaced images in pdf ' . $file . ']';
-                    }
-
-                    $errormsg = 'There appears to be no support for interlaced images in pdf.';
-                }
-            }
-
-            if (!$error && $info['bitDepth'] > 8) {
-                $error = 1;
-
-                //debugpng
-                if (defined("DEBUGPNG") && DEBUGPNG) {
-                    print '[addPngFromFile bit depth of 8 or less is supported ' . $file . ']';
-                }
-
-                $errormsg = 'only bit depth of 8 or less is supported';
-            }
-
-            if (!$error) {
-                switch ($info['colorType']) {
-                    case 3:
-                        $color = 'DeviceRGB';
-                        $ncolor = 1;
-                        break;
-
-                    case 2:
-                        $color = 'DeviceRGB';
-                        $ncolor = 3;
-                        break;
-
-                    case 0:
-                        $color = 'DeviceGray';
-                        $ncolor = 1;
-                        break;
-
-                    default:
-                        $error = 1;
-
-                        //debugpng
-                        if (defined("DEBUGPNG") && DEBUGPNG) {
-                            print '[addPngFromFile alpha channel not supported: ' . $info['colorType'] . ' ' . $file . ']';
-                        }
-
-                        $errormsg = 'transparency alpha channel not supported, transparency only supported for palette images.';
-                }
-            }
-
-            if ($error) {
-                $this->addMessage('PNG error - (' . $file . ') ' . $errormsg);
-
-                return;
-            }
-
-            //print_r($info);
-            // so this image is ok... add it in.
-            $this->numImages++;
-            $im = $this->numImages;
-            $label = "I$im";
-            $this->numObj++;
-
-            //  $this->o_image($this->numObj,'new',array('label' => $label,'data' => $idata,'iw' => $w,'ih' => $h,'type' => 'png','ic' => $info['width']));
-            $options = [
-                'label'            => $label,
-                'data'             => $idata,
-                'bitsPerComponent' => $info['bitDepth'],
-                'pdata'            => $pdata,
-                'iw'               => $info['width'],
-                'ih'               => $info['height'],
-                'type'             => 'png',
-                'color'            => $color,
-                'ncolor'           => $ncolor,
-                'masked'           => $mask,
-                'isMask'           => $is_mask
-            ];
-
-            if (isset($transparency)) {
-                $options['transparency'] = $transparency;
-            }
-
-            $this->o_image($this->numObj, 'new', $options);
-            $this->imagelist[$file] = ['label' => $label, 'w' => $info['width'], 'h' => $info['height']];
-        }
-
-        if ($is_mask) {
-            return;
-        }
-
-        if ($w <= 0 && $h <= 0) {
-            $w = $info['width'];
-            $h = $info['height'];
-        }
-
-        if ($w <= 0) {
-            $w = $h / $info['height'] * $info['width'];
-        }
-
-        if ($h <= 0) {
-            $h = $w * $info['height'] / $info['width'];
-        }
-
-        $this->addContent(sprintf("\nq\n%.3F 0 0 %.3F %.3F %.3F cm /%s Do\nQ", $w, $h, $x, $y, $label));
-    }
-
-    /**
-     * add a JPEG image into the document, from a file
-     *
-     * @param $img
-     * @param $x
-     * @param $y
-     * @param int $w
-     * @param int $h
-     */
-    function addJpegFromFile($img, $x, $y, $w = 0, $h = 0)
-    {
-        // attempt to add a jpeg image straight from a file, using no GD commands
-        // note that this function is unable to operate on a remote file.
-
-        if (!file_exists($img)) {
-            return;
-        }
-
-        if ($this->image_iscached($img)) {
-            $data = null;
-            $imageWidth = $this->imagelist[$img]['w'];
-            $imageHeight = $this->imagelist[$img]['h'];
-            $channels = $this->imagelist[$img]['c'];
-        } else {
-            $tmp = getimagesize($img);
-            $imageWidth = $tmp[0];
-            $imageHeight = $tmp[1];
-
-            if (isset($tmp['channels'])) {
-                $channels = $tmp['channels'];
-            } else {
-                $channels = 3;
-            }
-
-            $data = file_get_contents($img);
-        }
-
-        if ($w <= 0 && $h <= 0) {
-            $w = $imageWidth;
-        }
-
-        if ($w == 0) {
-            $w = $h / $imageHeight * $imageWidth;
-        }
-
-        if ($h == 0) {
-            $h = $w * $imageHeight / $imageWidth;
-        }
-
-        $this->addJpegImage_common($data, $img, $imageWidth, $imageHeight, $x, $y, $w, $h, $channels);
-    }
-
-    /**
-     * common code used by the two JPEG adding functions
-     * @param $data
-     * @param $imgname
-     * @param $imageWidth
-     * @param $imageHeight
-     * @param $x
-     * @param $y
-     * @param int $w
-     * @param int $h
-     * @param int $channels
-     */
-    private function addJpegImage_common(
-        &$data,
-        $imgname,
-        $imageWidth,
-        $imageHeight,
-        $x,
-        $y,
-        $w = 0,
-        $h = 0,
-        $channels = 3
-    ) {
-        if ($this->image_iscached($imgname)) {
-            $label = $this->imagelist[$imgname]['label'];
-            //debugpng
-            //if (DEBUGPNG) print '[addJpegImage_common Duplicate '.$imgname.']';
-
-        } else {
-            if ($data == null) {
-                $this->addMessage('addJpegImage_common error - (' . $imgname . ') data not present!');
-
-                return;
-            }
-
-            // note that this function is not to be called externally
-            // it is just the common code between the GD and the file options
-            $this->numImages++;
-            $im = $this->numImages;
-            $label = "I$im";
-            $this->numObj++;
-
-            $this->o_image(
-                $this->numObj,
-                'new',
-                [
-                    'label'    => $label,
-                    'data'     => &$data,
-                    'iw'       => $imageWidth,
-                    'ih'       => $imageHeight,
-                    'channels' => $channels
-                ]
-            );
-
-            $this->imagelist[$imgname] = [
-                'label' => $label,
-                'w'     => $imageWidth,
-                'h'     => $imageHeight,
-                'c'     => $channels
-            ];
-        }
-
-        $this->addContent(sprintf("\nq\n%.3F 0 0 %.3F %.3F %.3F cm /%s Do\nQ ", $w, $h, $x, $y, $label));
-    }
-
-    /**
-     * specify where the document should open when it first starts
-     *
-     * @param $style
-     * @param int $a
-     * @param int $b
-     * @param int $c
-     */
-    function openHere($style, $a = 0, $b = 0, $c = 0)
-    {
-        // this function will open the document at a specified page, in a specified style
-        // the values for style, and the required parameters are:
-        // 'XYZ'  left, top, zoom
-        // 'Fit'
-        // 'FitH' top
-        // 'FitV' left
-        // 'FitR' left,bottom,right
-        // 'FitB'
-        // 'FitBH' top
-        // 'FitBV' left
-        $this->numObj++;
-        $this->o_destination(
-            $this->numObj,
-            'new',
-            ['page' => $this->currentPage, 'type' => $style, 'p1' => $a, 'p2' => $b, 'p3' => $c]
-        );
-        $id = $this->catalogId;
-        $this->o_catalog($id, 'openHere', $this->numObj);
-    }
-
-    /**
-     * Add JavaScript code to the PDF document
-     *
-     * @param string $code
-     */
-    function addJavascript($code)
-    {
-        $this->javascript .= $code;
-    }
-
-    /**
-     * create a labelled destination within the document
-     *
-     * @param $label
-     * @param $style
-     * @param int $a
-     * @param int $b
-     * @param int $c
-     */
-    function addDestination($label, $style, $a = 0, $b = 0, $c = 0)
-    {
-        // associates the given label with the destination, it is done this way so that a destination can be specified after
-        // it has been linked to
-        // styles are the same as the 'openHere' function
-        $this->numObj++;
-        $this->o_destination(
-            $this->numObj,
-            'new',
-            ['page' => $this->currentPage, 'type' => $style, 'p1' => $a, 'p2' => $b, 'p3' => $c]
-        );
-        $id = $this->numObj;
-
-        // store the label->idf relationship, note that this means that labels can be used only once
-        $this->destinations["$label"] = $id;
-    }
-
-    /**
-     * define font families, this is used to initialize the font families for the default fonts
-     * and for the user to add new ones for their fonts. The default bahavious can be overridden should
-     * that be desired.
-     *
-     * @param $family
-     * @param string $options
-     */
-    function setFontFamily($family, $options = '')
-    {
-        if (!is_array($options)) {
-            if ($family === 'init') {
-                // set the known family groups
-                // these font families will be used to enable bold and italic markers to be included
-                // within text streams. html forms will be used... <b></b> <i></i>
-                $this->fontFamilies['Helvetica.afm'] =
-                    [
-                        'b'  => 'Helvetica-Bold.afm',
-                        'i'  => 'Helvetica-Oblique.afm',
-                        'bi' => 'Helvetica-BoldOblique.afm',
-                        'ib' => 'Helvetica-BoldOblique.afm'
-                    ];
-
-                $this->fontFamilies['Courier.afm'] =
-                    [
-                        'b'  => 'Courier-Bold.afm',
-                        'i'  => 'Courier-Oblique.afm',
-                        'bi' => 'Courier-BoldOblique.afm',
-                        'ib' => 'Courier-BoldOblique.afm'
-                    ];
-
-                $this->fontFamilies['Times-Roman.afm'] =
-                    [
-                        'b'  => 'Times-Bold.afm',
-                        'i'  => 'Times-Italic.afm',
-                        'bi' => 'Times-BoldItalic.afm',
-                        'ib' => 'Times-BoldItalic.afm'
-                    ];
-            }
-        } else {
-
-            // the user is trying to set a font family
-            // note that this can also be used to set the base ones to something else
-            if (mb_strlen($family)) {
-                $this->fontFamilies[$family] = $options;
-            }
-        }
-    }
-
-    /**
-     * used to add messages for use in debugging
-     *
-     * @param $message
-     */
-    function addMessage($message)
-    {
-        $this->messages .= $message . "\n";
-    }
-
-    /**
-     * a few functions which should allow the document to be treated transactionally.
-     *
-     * @param $action
-     */
-    function transaction($action)
-    {
-        switch ($action) {
-            case 'start':
-                // store all the data away into the checkpoint variable
-                $data = get_object_vars($this);
-                $this->checkpoint = $data;
-                unset($data);
-                break;
-
-            case 'commit':
-                if (is_array($this->checkpoint) && isset($this->checkpoint['checkpoint'])) {
-                    $tmp = $this->checkpoint['checkpoint'];
-                    $this->checkpoint = $tmp;
-                    unset($tmp);
-                } else {
-                    $this->checkpoint = '';
-                }
-                break;
-
-            case 'rewind':
-                // do not destroy the current checkpoint, but move us back to the state then, so that we can try again
-                if (is_array($this->checkpoint)) {
-                    // can only abort if were inside a checkpoint
-                    $tmp = $this->checkpoint;
-
-                    foreach ($tmp as $k => $v) {
-                        if ($k !== 'checkpoint') {
-                            $this->$k = $v;
-                        }
-                    }
-                    unset($tmp);
-                }
-                break;
-
-            case 'abort':
-                if (is_array($this->checkpoint)) {
-                    // can only abort if were inside a checkpoint
-                    $tmp = $this->checkpoint;
-                    foreach ($tmp as $k => $v) {
-                        $this->$k = $v;
-                    }
-                    unset($tmp);
-                }
-                break;
-        }
-    }
+									$transparency['r'] = $this->getBytes($data, $p + 8, 2);
+									// r from truecolor
+									$transparency['g'] = $this->getBytes($data, $p + 10, 2);
+									// g from truecolor
+									$transparency['b'] = $this->getBytes($data, $p + 12, 2);
+									// b from truecolor
+
+									$transparency['type'] = 'color-key';
+									break;
+
+								//unsupported transparency type
+								default:
+									if (defined("DEBUGPNG") && DEBUGPNG) {
+										print '[addPngFromFile unsupported transparency type ' . $file . ']';
+									}
+									break;
+							}
+
+							// KS End new code
+							break;
+
+						default:
+							break;
+					}
+
+					$p += $chunkLen + 12;
+				}
+
+				if (!$haveHeader) {
+					$error = 1;
+
+					//debugpng
+					if (defined("DEBUGPNG") && DEBUGPNG) {
+						print '[addPngFromFile information header is missing ' . $file . ']';
+					}
+
+					$errormsg = 'information header is missing';
+				}
+
+				if (isset($info['interlaceMethod']) && $info['interlaceMethod']) {
+					$error = 1;
+
+					//debugpng
+					if (defined("DEBUGPNG") && DEBUGPNG) {
+						print '[addPngFromFile no support for interlaced images in pdf ' . $file . ']';
+					}
+
+					$errormsg = 'There appears to be no support for interlaced images in pdf.';
+				}
+			}
+
+			if (!$error && $info['bitDepth'] > 8) {
+				$error = 1;
+
+				//debugpng
+				if (defined("DEBUGPNG") && DEBUGPNG) {
+					print '[addPngFromFile bit depth of 8 or less is supported ' . $file . ']';
+				}
+
+				$errormsg = 'only bit depth of 8 or less is supported';
+			}
+
+			if (!$error) {
+				switch ($info['colorType']) {
+					case 3:
+						$color = 'DeviceRGB';
+						$ncolor = 1;
+						break;
+
+					case 2:
+						$color = 'DeviceRGB';
+						$ncolor = 3;
+						break;
+
+					case 0:
+						$color = 'DeviceGray';
+						$ncolor = 1;
+						break;
+
+					default:
+						$error = 1;
+
+						//debugpng
+						if (defined("DEBUGPNG") && DEBUGPNG) {
+							print '[addPngFromFile alpha channel not supported: ' . $info['colorType'] . ' ' . $file . ']';
+						}
+
+						$errormsg = 'transparency alpha channel not supported, transparency only supported for palette images.';
+				}
+			}
+
+			if ($error) {
+				$this->addMessage('PNG error - (' . $file . ') ' . $errormsg);
+
+				return;
+			}
+
+			//print_r($info);
+			// so this image is ok... add it in.
+			$this->numImages++;
+			$im = $this->numImages;
+			$label = "I$im";
+			$this->numObj++;
+
+			//  $this->o_image($this->numObj,'new',array('label' => $label,'data' => $idata,'iw' => $w,'ih' => $h,'type' => 'png','ic' => $info['width']));
+			$options = [
+				'label'            => $label,
+				'data'             => $idata,
+				'bitsPerComponent' => $info['bitDepth'],
+				'pdata'            => $pdata,
+				'iw'               => $info['width'],
+				'ih'               => $info['height'],
+				'type'             => 'png',
+				'color'            => $color,
+				'ncolor'           => $ncolor,
+				'masked'           => $mask,
+				'isMask'           => $is_mask
+			];
+
+			if (isset($transparency)) {
+				$options['transparency'] = $transparency;
+			}
+
+			$this->o_image($this->numObj, 'new', $options);
+			$this->imagelist[$file] = ['label' => $label, 'w' => $info['width'], 'h' => $info['height']];
+		}
+
+		if ($is_mask) {
+			return;
+		}
+
+		if ($w <= 0 && $h <= 0) {
+			$w = $info['width'];
+			$h = $info['height'];
+		}
+
+		if ($w <= 0) {
+			$w = $h / $info['height'] * $info['width'];
+		}
+
+		if ($h <= 0) {
+			$h = $w * $info['height'] / $info['width'];
+		}
+
+		$this->addContent(sprintf("\nq\n%.3F 0 0 %.3F %.3F %.3F cm /%s Do\nQ", $w, $h, $x, $y, $label));
+	}
+
+	/**
+	 * add a JPEG image into the document, from a file
+	 *
+	 * @param $img
+	 * @param $x
+	 * @param $y
+	 * @param int $w
+	 * @param int $h
+	 */
+	function addJpegFromFile($img, $x, $y, $w = 0, $h = 0)
+	{
+		// attempt to add a jpeg image straight from a file, using no GD commands
+		// note that this function is unable to operate on a remote file.
+
+		if (!file_exists($img)) {
+			return;
+		}
+
+		if ($this->image_iscached($img)) {
+			$data = null;
+			$imageWidth = $this->imagelist[$img]['w'];
+			$imageHeight = $this->imagelist[$img]['h'];
+			$channels = $this->imagelist[$img]['c'];
+		} else {
+			$tmp = getimagesize($img);
+			$imageWidth = $tmp[0];
+			$imageHeight = $tmp[1];
+
+			if (isset($tmp['channels'])) {
+				$channels = $tmp['channels'];
+			} else {
+				$channels = 3;
+			}
+
+			$data = file_get_contents($img);
+		}
+
+		if ($w <= 0 && $h <= 0) {
+			$w = $imageWidth;
+		}
+
+		if ($w == 0) {
+			$w = $h / $imageHeight * $imageWidth;
+		}
+
+		if ($h == 0) {
+			$h = $w * $imageHeight / $imageWidth;
+		}
+
+		$this->addJpegImage_common($data, $img, $imageWidth, $imageHeight, $x, $y, $w, $h, $channels);
+	}
+
+	/**
+	 * common code used by the two JPEG adding functions
+	 * @param $data
+	 * @param $imgname
+	 * @param $imageWidth
+	 * @param $imageHeight
+	 * @param $x
+	 * @param $y
+	 * @param int $w
+	 * @param int $h
+	 * @param int $channels
+	 */
+	private function addJpegImage_common(
+		&$data,
+		$imgname,
+		$imageWidth,
+		$imageHeight,
+		$x,
+		$y,
+		$w = 0,
+		$h = 0,
+		$channels = 3
+	) {
+		if ($this->image_iscached($imgname)) {
+			$label = $this->imagelist[$imgname]['label'];
+			//debugpng
+			//if (DEBUGPNG) print '[addJpegImage_common Duplicate '.$imgname.']';
+
+		} else {
+			if ($data == null) {
+				$this->addMessage('addJpegImage_common error - (' . $imgname . ') data not present!');
+
+				return;
+			}
+
+			// note that this function is not to be called externally
+			// it is just the common code between the GD and the file options
+			$this->numImages++;
+			$im = $this->numImages;
+			$label = "I$im";
+			$this->numObj++;
+
+			$this->o_image(
+				$this->numObj,
+				'new',
+				[
+					'label'    => $label,
+					'data'     => &$data,
+					'iw'       => $imageWidth,
+					'ih'       => $imageHeight,
+					'channels' => $channels
+				]
+			);
+
+			$this->imagelist[$imgname] = [
+				'label' => $label,
+				'w'     => $imageWidth,
+				'h'     => $imageHeight,
+				'c'     => $channels
+			];
+		}
+
+		$this->addContent(sprintf("\nq\n%.3F 0 0 %.3F %.3F %.3F cm /%s Do\nQ ", $w, $h, $x, $y, $label));
+	}
+
+	/**
+	 * specify where the document should open when it first starts
+	 *
+	 * @param $style
+	 * @param int $a
+	 * @param int $b
+	 * @param int $c
+	 */
+	function openHere($style, $a = 0, $b = 0, $c = 0)
+	{
+		// this function will open the document at a specified page, in a specified style
+		// the values for style, and the required parameters are:
+		// 'XYZ'  left, top, zoom
+		// 'Fit'
+		// 'FitH' top
+		// 'FitV' left
+		// 'FitR' left,bottom,right
+		// 'FitB'
+		// 'FitBH' top
+		// 'FitBV' left
+		$this->numObj++;
+		$this->o_destination(
+			$this->numObj,
+			'new',
+			['page' => $this->currentPage, 'type' => $style, 'p1' => $a, 'p2' => $b, 'p3' => $c]
+		);
+		$id = $this->catalogId;
+		$this->o_catalog($id, 'openHere', $this->numObj);
+	}
+
+	/**
+	 * Add JavaScript code to the PDF document
+	 *
+	 * @param string $code
+	 */
+	function addJavascript($code)
+	{
+		$this->javascript .= $code;
+	}
+
+	/**
+	 * create a labelled destination within the document
+	 *
+	 * @param $label
+	 * @param $style
+	 * @param int $a
+	 * @param int $b
+	 * @param int $c
+	 */
+	function addDestination($label, $style, $a = 0, $b = 0, $c = 0)
+	{
+		// associates the given label with the destination, it is done this way so that a destination can be specified after
+		// it has been linked to
+		// styles are the same as the 'openHere' function
+		$this->numObj++;
+		$this->o_destination(
+			$this->numObj,
+			'new',
+			['page' => $this->currentPage, 'type' => $style, 'p1' => $a, 'p2' => $b, 'p3' => $c]
+		);
+		$id = $this->numObj;
+
+		// store the label->idf relationship, note that this means that labels can be used only once
+		$this->destinations["$label"] = $id;
+	}
+
+	/**
+	 * define font families, this is used to initialize the font families for the default fonts
+	 * and for the user to add new ones for their fonts. The default bahavious can be overridden should
+	 * that be desired.
+	 *
+	 * @param $family
+	 * @param string $options
+	 */
+	function setFontFamily($family, $options = '')
+	{
+		if (!is_array($options)) {
+			if ($family === 'init') {
+				// set the known family groups
+				// these font families will be used to enable bold and italic markers to be included
+				// within text streams. html forms will be used... <b></b> <i></i>
+				$this->fontFamilies['Helvetica.afm'] =
+					[
+						'b'  => 'Helvetica-Bold.afm',
+						'i'  => 'Helvetica-Oblique.afm',
+						'bi' => 'Helvetica-BoldOblique.afm',
+						'ib' => 'Helvetica-BoldOblique.afm'
+					];
+
+				$this->fontFamilies['Courier.afm'] =
+					[
+						'b'  => 'Courier-Bold.afm',
+						'i'  => 'Courier-Oblique.afm',
+						'bi' => 'Courier-BoldOblique.afm',
+						'ib' => 'Courier-BoldOblique.afm'
+					];
+
+				$this->fontFamilies['Times-Roman.afm'] =
+					[
+						'b'  => 'Times-Bold.afm',
+						'i'  => 'Times-Italic.afm',
+						'bi' => 'Times-BoldItalic.afm',
+						'ib' => 'Times-BoldItalic.afm'
+					];
+			}
+		} else {
+
+			// the user is trying to set a font family
+			// note that this can also be used to set the base ones to something else
+			if (mb_strlen($family)) {
+				$this->fontFamilies[$family] = $options;
+			}
+		}
+	}
+
+	/**
+	 * used to add messages for use in debugging
+	 *
+	 * @param $message
+	 */
+	function addMessage($message)
+	{
+		$this->messages .= $message . "\n";
+	}
+
+	/**
+	 * a few functions which should allow the document to be treated transactionally.
+	 *
+	 * @param $action
+	 */
+	function transaction($action)
+	{
+		switch ($action) {
+			case 'start':
+				// store all the data away into the checkpoint variable
+				$data = get_object_vars($this);
+				$this->checkpoint = $data;
+				unset($data);
+				break;
+
+			case 'commit':
+				if (is_array($this->checkpoint) && isset($this->checkpoint['checkpoint'])) {
+					$tmp = $this->checkpoint['checkpoint'];
+					$this->checkpoint = $tmp;
+					unset($tmp);
+				} else {
+					$this->checkpoint = '';
+				}
+				break;
+
+			case 'rewind':
+				// do not destroy the current checkpoint, but move us back to the state then, so that we can try again
+				if (is_array($this->checkpoint)) {
+					// can only abort if were inside a checkpoint
+					$tmp = $this->checkpoint;
+
+					foreach ($tmp as $k => $v) {
+						if ($k !== 'checkpoint') {
+							$this->$k = $v;
+						}
+					}
+					unset($tmp);
+				}
+				break;
+
+			case 'abort':
+				if (is_array($this->checkpoint)) {
+					// can only abort if were inside a checkpoint
+					$tmp = $this->checkpoint;
+					foreach ($tmp as $k => $v) {
+						$this->$k = $v;
+					}
+					unset($tmp);
+				}
+				break;
+		}
+	}
 }

Spacing +231 added lines, -231 removed lines

@@ -23,24 +23,24 @@ 
     const PDF_VERSION = '1.7';
 
     const ACROFORM_SIG_SIGNATURESEXISTS = 0x0001;
-    const ACROFORM_SIG_APPENDONLY =       0x0002;
+    const ACROFORM_SIG_APPENDONLY = 0x0002;
 
-    const ACROFORM_FIELD_BUTTON =   'Btn';
-    const ACROFORM_FIELD_TEXT =     'Tx';
-    const ACROFORM_FIELD_CHOICE =   'Ch';
-    const ACROFORM_FIELD_SIG =      'Sig';
+    const ACROFORM_FIELD_BUTTON = 'Btn';
+    const ACROFORM_FIELD_TEXT = 'Tx';
+    const ACROFORM_FIELD_CHOICE = 'Ch';
+    const ACROFORM_FIELD_SIG = 'Sig';
 
-    const ACROFORM_FIELD_READONLY =               0x0001;
-    const ACROFORM_FIELD_REQUIRED =               0x0002;
+    const ACROFORM_FIELD_READONLY = 0x0001;
+    const ACROFORM_FIELD_REQUIRED = 0x0002;
 
-    const ACROFORM_FIELD_TEXT_MULTILINE =         0x1000;
-    const ACROFORM_FIELD_TEXT_PASSWORD =          0x2000;
-    const ACROFORM_FIELD_TEXT_RICHTEXT =         0x10000;
+    const ACROFORM_FIELD_TEXT_MULTILINE = 0x1000;
+    const ACROFORM_FIELD_TEXT_PASSWORD = 0x2000;
+    const ACROFORM_FIELD_TEXT_RICHTEXT = 0x10000;
 
-    const ACROFORM_FIELD_CHOICE_COMBO =          0x20000;
-    const ACROFORM_FIELD_CHOICE_EDIT =           0x40000;
-    const ACROFORM_FIELD_CHOICE_SORT =           0x80000;
-    const ACROFORM_FIELD_CHOICE_MULTISELECT =   0x200000;
+    const ACROFORM_FIELD_CHOICE_COMBO = 0x20000;
+    const ACROFORM_FIELD_CHOICE_EDIT = 0x40000;
+    const ACROFORM_FIELD_CHOICE_SORT = 0x80000;
+    const ACROFORM_FIELD_CHOICE_MULTISELECT = 0x200000;
 
     const XOBJECT_SUBTYPE_FORM = 'Form';
 
@@ -459,16 +459,16 @@ 
                     case 'XYZ':
                     /** @noinspection PhpMissingBreakStatementInspection */
                     case 'FitR':
-                        $tmp = ' ' . $options['p3'] . $tmp;
+                        $tmp = ' '.$options['p3'].$tmp;
                     case 'FitH':
                     case 'FitV':
                     case 'FitBH':
                     /** @noinspection PhpMissingBreakStatementInspection */
                     case 'FitBV':
-                        $tmp = ' ' . $options['p1'] . ' ' . $options['p2'] . $tmp;
+                        $tmp = ' '.$options['p1'].' '.$options['p2'].$tmp;
                     case 'Fit':
                     case 'FitB':
-                        $tmp = $options['type'] . $tmp;
+                        $tmp = $options['type'].$tmp;
                         $this->objects[$id]['info']['string'] = $tmp;
                         $this->objects[$id]['info']['page'] = $options['page'];
                 }
@@ -478,7 +478,7 @@ 
                 $o = &$this->objects[$id];
 
                 $tmp = $o['info'];
-                $res = "\n$id 0 obj\n" . '[' . $tmp['page'] . ' 0 R /' . $tmp['string'] . "]\nendobj";
+                $res = "\n$id 0 obj\n".'['.$tmp['page'].' 0 R /'.$tmp['string']."]\nendobj";
 
                 return $res;
         }
@@ -514,12 +514,12 @@ 
                         case 'CenterWindow':
                         case 'DisplayDocTitle':
                         case 'PickTrayByPDFSize':
-                            $o['info'][$k] = (bool)$v;
+                            $o['info'][$k] = (bool) $v;
                             break;
 
                         // Integer keys
                         case 'NumCopies':
-                            $o['info'][$k] = (int)$v;
+                            $o['info'][$k] = (int) $v;
                             break;
 
                         // Name keys
@@ -527,33 +527,33 @@ 
                         case 'ViewClip':
                         case 'PrintClip':
                         case 'PrintArea':
-                            $o['info'][$k] = (string)$v;
+                            $o['info'][$k] = (string) $v;
                             break;
 
                         // Named with limited valid values
                         case 'NonFullScreenPageMode':
-                            if (!in_array($v, ['UseNone', 'UseOutlines', 'UseThumbs', 'UseOC'])) {
+                            if ( ! in_array($v, ['UseNone', 'UseOutlines', 'UseThumbs', 'UseOC'])) {
                                 break;
                             }
                             $o['info'][$k] = $v;
                             break;
 
                         case 'Direction':
-                            if (!in_array($v, ['L2R', 'R2L'])) {
+                            if ( ! in_array($v, ['L2R', 'R2L'])) {
                                 break;
                             }
                             $o['info'][$k] = $v;
                             break;
 
                         case 'PrintScaling':
-                            if (!in_array($v, ['None', 'AppDefault'])) {
+                            if ( ! in_array($v, ['None', 'AppDefault'])) {
                                 break;
                             }
                             $o['info'][$k] = $v;
                             break;
 
                         case 'Duplex':
-                            if (!in_array($v, ['None', 'Simplex', 'DuplexFlipShortEdge', 'DuplexFlipLongEdge'])) {
+                            if ( ! in_array($v, ['None', 'Simplex', 'DuplexFlipShortEdge', 'DuplexFlipLongEdge'])) {
                                 break;
                             }
                             $o['info'][$k] = $v;
@@ -563,7 +563,7 @@ 
                         case 'PrintPageRange':
                             // Cast to integer array
                             foreach ($v as $vK => $vV) {
-                                $v[$vK] = (int)$vV;
+                                $v[$vK] = (int) $vV;
                             }
                             $o['info'][$k] = array_values($v);
                             break;
@@ -577,13 +577,13 @@ 
 
                 foreach ($o['info'] as $k => $v) {
                     if (is_string($v)) {
-                        $v = '/' . $v;
+                        $v = '/'.$v;
                     } elseif (is_int($v)) {
                         $v = (string) $v;
                     } elseif (is_bool($v)) {
                         $v = ($v ? 'true' : 'false');
                     } elseif (is_array($v)) {
-                        $v = '[' . implode(' ', $v) . ']';
+                        $v = '['.implode(' ', $v).']';
                     }
                     $res .= "\n/$k $v";
                 }
@@ -624,7 +624,7 @@ 
                 break;
 
             case 'viewerPreferences':
-                if (!isset($o['info']['viewerPreferences'])) {
+                if ( ! isset($o['info']['viewerPreferences'])) {
                     $this->numObj++;
                     $this->o_viewerPreferences($this->numObj, 'new');
                     $o['info']['viewerPreferences'] = $this->numObj;
@@ -695,7 +695,7 @@ 
                 break;
 
             case 'page':
-                if (!is_array($options)) {
+                if ( ! is_array($options)) {
                     // then it will just be the id of the new page
                     $o['info']['pages'][] = $options;
                 } else {
@@ -762,7 +762,7 @@ 
                         $res .= "$v 0 R\n";
                     }
 
-                    $res .= "]\n/Count " . count($this->objects[$id]['info']['pages']);
+                    $res .= "]\n/Count ".count($this->objects[$id]['info']['pages']);
 
                     if ((isset($o['info']['fonts']) && count($o['info']['fonts'])) ||
                         isset($o['info']['procset']) ||
@@ -771,13 +771,13 @@ 
                         $res .= "\n/Resources <<";
 
                         if (isset($o['info']['procset'])) {
-                            $res .= "\n/ProcSet " . $o['info']['procset'] . " 0 R";
+                            $res .= "\n/ProcSet ".$o['info']['procset']." 0 R";
                         }
 
                         if (isset($o['info']['fonts']) && count($o['info']['fonts'])) {
                             $res .= "\n/Font << ";
                             foreach ($o['info']['fonts'] as $finfo) {
-                                $res .= "\n/F" . $finfo['fontNum'] . " " . $finfo['objNum'] . " 0 R";
+                                $res .= "\n/F".$finfo['fontNum']." ".$finfo['objNum']." 0 R";
                             }
                             $res .= "\n>>";
                         }
@@ -785,7 +785,7 @@ 
                         if (isset($o['info']['xObjects']) && count($o['info']['xObjects'])) {
                             $res .= "\n/XObject << ";
                             foreach ($o['info']['xObjects'] as $finfo) {
-                                $res .= "\n/" . $finfo['label'] . " " . $finfo['objNum'] . " 0 R";
+                                $res .= "\n/".$finfo['label']." ".$finfo['objNum']." 0 R";
                             }
                             $res .= "\n>>";
                         }
@@ -793,7 +793,7 @@ 
                         if (isset($o['info']['extGStates']) && count($o['info']['extGStates'])) {
                             $res .= "\n/ExtGState << ";
                             foreach ($o['info']['extGStates'] as $gstate) {
-                                $res .= "\n/GS" . $gstate['stateNum'] . " " . $gstate['objNum'] . " 0 R";
+                                $res .= "\n/GS".$gstate['stateNum']." ".$gstate['objNum']." 0 R";
                             }
                             $res .= "\n>>";
                         }
@@ -801,13 +801,13 @@ 
                         $res .= "\n>>";
                         if (isset($o['info']['mediaBox'])) {
                             $tmp = $o['info']['mediaBox'];
-                            $res .= "\n/MediaBox [" . sprintf(
+                            $res .= "\n/MediaBox [".sprintf(
                                     '%.3F %.3F %.3F %.3F',
                                     $tmp[0],
                                     $tmp[1],
                                     $tmp[2],
                                     $tmp[3]
-                                ) . ']';
+                                ).']';
                         }
                     }
 
@@ -853,7 +853,7 @@ 
                         $res .= "$v 0 R ";
                     }
 
-                    $res .= "] /Count " . count($o['info']['outlines']) . " >>\nendobj";
+                    $res .= "] /Count ".count($o['info']['outlines'])." >>\nendobj";
                 } else {
                     $res = "\n$id 0 obj\n<< /Type /Outlines /Count 0 >>\nendobj";
                 }
@@ -957,7 +957,7 @@ 
                             case 'Widths':
                             case 'FontDescriptor':
                             case 'SubType':
-                                $this->addMessage('o_font ' . $k . " : " . $v);
+                                $this->addMessage('o_font '.$k." : ".$v);
                                 $o['info'][$k] = $v;
                                 break;
                         }
@@ -981,44 +981,44 @@ 
                     // transform FPDF to TCPDF (http://tcpdf.sourceforge.net/)
 
                     $res = "\n$id 0 obj\n<</Type /Font\n/Subtype /Type0\n";
-                    $res .= "/BaseFont /" . $o['info']['name'] . "\n";
+                    $res .= "/BaseFont /".$o['info']['name']."\n";
 
                     // The horizontal identity mapping for 2-byte CIDs; may be used
                     // with CIDFonts using any Registry, Ordering, and Supplement values.
                     $res .= "/Encoding /Identity-H\n";
-                    $res .= "/DescendantFonts [" . $o['info']['cidFont'] . " 0 R]\n";
-                    $res .= "/ToUnicode " . $o['info']['toUnicode'] . " 0 R\n";
+                    $res .= "/DescendantFonts [".$o['info']['cidFont']." 0 R]\n";
+                    $res .= "/ToUnicode ".$o['info']['toUnicode']." 0 R\n";
                     $res .= ">>\n";
                     $res .= "endobj";
                 } else {
-                    $res = "\n$id 0 obj\n<< /Type /Font\n/Subtype /" . $o['info']['SubType'] . "\n";
-                    $res .= "/Name /F" . $o['info']['fontNum'] . "\n";
-                    $res .= "/BaseFont /" . $o['info']['name'] . "\n";
+                    $res = "\n$id 0 obj\n<< /Type /Font\n/Subtype /".$o['info']['SubType']."\n";
+                    $res .= "/Name /F".$o['info']['fontNum']."\n";
+                    $res .= "/BaseFont /".$o['info']['name']."\n";
 
                     if (isset($o['info']['encodingDictionary'])) {
                         // then place a reference to the dictionary
-                        $res .= "/Encoding " . $o['info']['encodingDictionary'] . " 0 R\n";
+                        $res .= "/Encoding ".$o['info']['encodingDictionary']." 0 R\n";
                     } else {
                         if (isset($o['info']['encoding'])) {
                             // use the specified encoding
-                            $res .= "/Encoding /" . $o['info']['encoding'] . "\n";
+                            $res .= "/Encoding /".$o['info']['encoding']."\n";
                         }
                     }
 
                     if (isset($o['info']['FirstChar'])) {
-                        $res .= "/FirstChar " . $o['info']['FirstChar'] . "\n";
+                        $res .= "/FirstChar ".$o['info']['FirstChar']."\n";
                     }
 
                     if (isset($o['info']['LastChar'])) {
-                        $res .= "/LastChar " . $o['info']['LastChar'] . "\n";
+                        $res .= "/LastChar ".$o['info']['LastChar']."\n";
                     }
 
                     if (isset($o['info']['Widths'])) {
-                        $res .= "/Widths " . $o['info']['Widths'] . " 0 R\n";
+                        $res .= "/Widths ".$o['info']['Widths']." 0 R\n";
                     }
 
                     if (isset($o['info']['FontDescriptor'])) {
-                        $res .= "/FontDescriptor " . $o['info']['FontDescriptor'] . " 0 R\n";
+                        $res .= "/FontDescriptor ".$o['info']['FontDescriptor']." 0 R\n";
                     }
 
                     $res .= ">>\n";
@@ -1044,7 +1044,7 @@ 
             }
         }
 
-        return 'SUB' . str_pad($base_26, 3, 'A', STR_PAD_LEFT);
+        return 'SUB'.str_pad($base_26, 3, 'A', STR_PAD_LEFT);
     }
 
     /**
@@ -1056,7 +1056,7 @@ 
     private function processFont(int $fontObjId, array $object_info)
     {
         $fontFileName = $object_info['fontFileName'];
-        if (!isset($this->fonts[$fontFileName])) {
+        if ( ! isset($this->fonts[$fontFileName])) {
             return false;
         }
 
@@ -1068,9 +1068,9 @@ 
         $isTtfFont = $fileSuffixLower === 'ttf';
         $isPfbFont = $fileSuffixLower === 'pfb';
 
-        $this->addMessage('selectFont: checking for - ' . $fbfile);
+        $this->addMessage('selectFont: checking for - '.$fbfile);
 
-        if (!$fileSuffix) {
+        if ( ! $fileSuffix) {
             $this->addMessage(
                 'selectFont: pfb or ttf file not found, ok if this is one of the 14 standard fonts'
             );
@@ -1089,7 +1089,7 @@ 
 
             foreach ($font['C'] as $num => $d) {
                 if (intval($num) > 0 || $num == '0') {
-                    if (!$font['isUnicode']) {
+                    if ( ! $font['isUnicode']) {
                         // With Unicode, widths array isn't used
                         if ($lastChar > 0 && $num > $lastChar + 1) {
                             for ($i = $lastChar + 1; $i < $num; $i++) {
@@ -1116,7 +1116,7 @@ 
             if (isset($object['differences'])) {
                 foreach ($object['differences'] as $charNum => $charName) {
                     if ($charNum > $lastChar) {
-                        if (!$object['isUnicode']) {
+                        if ( ! $object['isUnicode']) {
                             // With Unicode, widths array isn't used
                             for ($i = $lastChar + 1; $i <= $charNum; $i++) {
                                 $widths[] = 0;
@@ -1139,17 +1139,17 @@ 
                 $font['CIDWidths'] = $cid_widths;
             }
 
-            $this->addMessage('selectFont: FirstChar = ' . $firstChar);
-            $this->addMessage('selectFont: LastChar = ' . $lastChar);
+            $this->addMessage('selectFont: FirstChar = '.$firstChar);
+            $this->addMessage('selectFont: LastChar = '.$lastChar);
 
             $widthid = -1;
 
-            if (!$font['isUnicode']) {
+            if ( ! $font['isUnicode']) {
                 // With Unicode, widths array isn't used
 
                 $this->numObj++;
                 $this->o_contents($this->numObj, 'new', 'raw');
-                $this->objects[$this->numObj]['c'] .= '[' . implode(' ', $widths) . ']';
+                $this->objects[$this->numObj]['c'] .= '['.implode(' ', $widths).']';
                 $widthid = $this->numObj;
             }
 
@@ -1313,8 +1313,8 @@ 
 EOT;
 
                 $res = "\n$id 0 obj\n";
-                $res .= "<</Length " . mb_strlen($stream, '8bit') . " >>\n";
-                $res .= "stream\n" . $stream . "\nendstream" . "\nendobj";
+                $res .= "<</Length ".mb_strlen($stream, '8bit')." >>\n";
+                $res .= "stream\n".$stream."\nendstream"."\nendobj";
 
                 return $res;
         }
@@ -1409,12 +1409,12 @@ 
 
             case 'out':
                 $res = "\n$id 0 obj\n<< /Type /Encoding\n";
-                if (!isset($o['info']['encoding'])) {
+                if ( ! isset($o['info']['encoding'])) {
                     $o['info']['encoding'] = 'WinAnsiEncoding';
                 }
 
                 if ($o['info']['encoding'] !== 'none') {
-                    $res .= "/BaseEncoding /" . $o['info']['encoding'] . "\n";
+                    $res .= "/BaseEncoding /".$o['info']['encoding']."\n";
                 }
 
                 $res .= "/Differences \n[";
@@ -1495,8 +1495,8 @@ 
                 $res = "\n$id 0 obj\n";
                 $res .= "<</Type /Font\n";
                 $res .= "/Subtype /CIDFontType2\n";
-                $res .= "/BaseFont /" . $o['info']['name'] . "\n";
-                $res .= "/CIDSystemInfo " . $o['info']['cidSystemInfo'] . " 0 R\n";
+                $res .= "/BaseFont /".$o['info']['name']."\n";
+                $res .= "/CIDSystemInfo ".$o['info']['cidSystemInfo']." 0 R\n";
                 //      if (isset($o['info']['FirstChar'])) {
                 //        $res.= "/FirstChar ".$o['info']['FirstChar']."\n";
                 //      }
@@ -1505,11 +1505,11 @@ 
                 //        $res.= "/LastChar ".$o['info']['LastChar']."\n";
                 //      }
                 if (isset($o['info']['FontDescriptor'])) {
-                    $res .= "/FontDescriptor " . $o['info']['FontDescriptor'] . " 0 R\n";
+                    $res .= "/FontDescriptor ".$o['info']['FontDescriptor']." 0 R\n";
                 }
 
                 if (isset($o['info']['MissingWidth'])) {
-                    $res .= "/DW " . $o['info']['MissingWidth'] . "\n";
+                    $res .= "/DW ".$o['info']['MissingWidth']."\n";
                 }
 
                 if (isset($o['info']['fontFileName']) && isset($this->fonts[$o['info']['fontFileName']]['CIDWidths'])) {
@@ -1521,7 +1521,7 @@ 
                     $res .= "/W [$w]\n";
                 }
 
-                $res .= "/CIDToGIDMap " . $o['info']['cidToGidMap'] . " 0 R\n";
+                $res .= "/CIDToGIDMap ".$o['info']['cidToGidMap']." 0 R\n";
                 $res .= ">>\n";
                 $res .= "endobj";
 
@@ -1561,8 +1561,8 @@ 
 
                 $res = "\n$id 0 obj\n";
 
-                $res .= '<</Registry (' . $registry . ")\n"; // A string identifying an issuer of character collections
-                $res .= '/Ordering (' . $ordering . ")\n"; // A string that uniquely names a character collection issued by a specific registry
+                $res .= '<</Registry ('.$registry.")\n"; // A string identifying an issuer of character collections
+                $res .= '/Ordering ('.$ordering.")\n"; // A string that uniquely names a character collection issued by a specific registry
                 $res .= "/Supplement 0\n"; // The supplement number of the character collection.
                 $res .= ">>";
 
@@ -1601,12 +1601,12 @@ 
                 $compressed = isset($this->fonts[$fontFileName]['CIDtoGID_Compressed']) &&
                     $this->fonts[$fontFileName]['CIDtoGID_Compressed'];
 
-                if (!$compressed && isset($o['raw'])) {
+                if ( ! $compressed && isset($o['raw'])) {
                     $res .= $tmp;
                 } else {
                     $res .= "<<";
 
-                    if (!$compressed && $this->compressionReady && $this->options['compression']) {
+                    if ( ! $compressed && $this->compressionReady && $this->options['compression']) {
                         // then implement ZLIB based compression on this content stream
                         $compressed = true;
                         $tmp = gzcompress($tmp, 6);
@@ -1620,7 +1620,7 @@ 
                         $tmp = $this->ARC4($tmp);
                     }
 
-                    $res .= "\n/Length " . mb_strlen($tmp, '8bit') . ">>\nstream\n$tmp\nendstream";
+                    $res .= "\n/Length ".mb_strlen($tmp, '8bit').">>\nstream\n$tmp\nendstream";
                 }
 
                 $res .= "\nendobj";
@@ -1690,7 +1690,7 @@ 
         switch ($action) {
             case 'new':
                 $this->infoObject = $id;
-                $date = 'D:' . @date('Ymd');
+                $date = 'D:'.@date('Ymd');
                 $this->objects[$id] = [
                     't'    => 'info',
                     'info' => [
@@ -1775,12 +1775,12 @@ 
                 $res = "\n$id 0 obj\n<< /Type /Action";
                 switch ($o['type']) {
                     case 'ilink':
-                        if (!isset($this->destinations[(string)$o['info']['label']])) {
+                        if ( ! isset($this->destinations[(string) $o['info']['label']])) {
                             break;
                         }
 
                         // there will be an 'label' setting, this is the name of the destination
-                        $res .= "\n/S /GoTo\n/D " . $this->destinations[(string)$o['info']['label']] . " 0 R";
+                        $res .= "\n/S /GoTo\n/D ".$this->destinations[(string) $o['info']['label']]." 0 R";
                         break;
 
                     case 'URI':
@@ -1852,7 +1852,7 @@ 
                         $res .= "\n/Subtype /Link";
                         break;
                 }
-                $res .= "\n/A " . $o['info']['actionId'] . " 0 R";
+                $res .= "\n/A ".$o['info']['actionId']." 0 R";
                 $res .= "\n/Border [0 0 0]";
                 $res .= "\n/H /I";
                 $res .= "\n/Rect [ ";
@@ -1926,7 +1926,7 @@ 
 
             case 'annot':
                 // add an annotation to this page
-                if (!isset($o['info']['annot'])) {
+                if ( ! isset($o['info']['annot'])) {
                     $o['info']['annot'] = [];
                 }
 
@@ -1938,15 +1938,15 @@ 
                 $res = "\n$id 0 obj\n<< /Type /Page";
                 if (isset($o['info']['mediaBox'])) {
                     $tmp = $o['info']['mediaBox'];
-                    $res .= "\n/MediaBox [" . sprintf(
+                    $res .= "\n/MediaBox [".sprintf(
                             '%.3F %.3F %.3F %.3F',
                             $tmp[0],
                             $tmp[1],
                             $tmp[2],
                             $tmp[3]
-                        ) . ']';
+                        ).']';
                 }
-                $res .= "\n/Parent " . $o['info']['parent'] . " 0 R";
+                $res .= "\n/Parent ".$o['info']['parent']." 0 R";
 
                 if (isset($o['info']['annot'])) {
                     $res .= "\n/Annots [";
@@ -1958,7 +1958,7 @@ 
 
                 $count = count($o['info']['contents']);
                 if ($count == 1) {
-                    $res .= "\n/Contents " . $o['info']['contents'][0] . " 0 R";
+                    $res .= "\n/Contents ".$o['info']['contents'][0]." 0 R";
                 } else {
                     if ($count > 1) {
                         $res .= "\n/Contents [\n";
@@ -2038,7 +2038,7 @@ 
                         $res .= "\n/$k $v";
                     }
 
-                    $res .= "\n/Length " . mb_strlen($tmp, '8bit') . " >>\nstream\n$tmp\nendstream";
+                    $res .= "\n/Length ".mb_strlen($tmp, '8bit')." >>\nstream\n$tmp\nendstream";
                 }
 
                 $res .= "\nendobj";
@@ -2061,7 +2061,7 @@ 
                 $this->objects[$id] = [
                     't'    => 'embedjs',
                     'info' => [
-                        'Names' => '[(EmbeddedJS) ' . ($id + 1) . ' 0 R]'
+                        'Names' => '[(EmbeddedJS) '.($id + 1).' 0 R]'
                     ]
                 ];
                 break;
@@ -2094,7 +2094,7 @@ 
                     't'    => 'javascript',
                     'info' => [
                         'S'  => '/JavaScript',
-                        'JS' => '(' . $this->filterText($code, true, false) . ')',
+                        'JS' => '('.$this->filterText($code, true, false).')',
                     ]
                 ];
                 break;
@@ -2129,7 +2129,7 @@ 
                 // make the new object
                 $this->objects[$id] = ['t' => 'image', 'data' => &$options['data'], 'info' => []];
 
-                $info =& $this->objects[$id]['info'];
+                $info = & $this->objects[$id]['info'];
 
                 $info['Type'] = '/XObject';
                 $info['Subtype'] = '/Image';
@@ -2137,11 +2137,11 @@ 
                 $info['Height'] = $options['ih'];
 
                 if (isset($options['masked']) && $options['masked']) {
-                    $info['SMask'] = ($this->numObj - 1) . ' 0 R';
+                    $info['SMask'] = ($this->numObj - 1).' 0 R';
                 }
 
-                if (!isset($options['type']) || $options['type'] === 'jpg') {
-                    if (!isset($options['channels'])) {
+                if ( ! isset($options['type']) || $options['type'] === 'jpg') {
+                    if ( ! isset($options['channels'])) {
                         $options['channels'] = 3;
                     }
 
@@ -2166,17 +2166,17 @@ 
                 } else {
                     if ($options['type'] === 'png') {
                         $info['Filter'] = '/FlateDecode';
-                        $info['DecodeParms'] = '<< /Predictor 15 /Colors ' . $options['ncolor'] . ' /Columns ' . $options['iw'] . ' /BitsPerComponent ' . $options['bitsPerComponent'] . '>>';
+                        $info['DecodeParms'] = '<< /Predictor 15 /Colors '.$options['ncolor'].' /Columns '.$options['iw'].' /BitsPerComponent '.$options['bitsPerComponent'].'>>';
 
                         if ($options['isMask']) {
                             $info['ColorSpace'] = '/DeviceGray';
                         } else {
                             if (mb_strlen($options['pdata'], '8bit')) {
-                                $tmp = ' [ /Indexed /DeviceRGB ' . (mb_strlen($options['pdata'], '8bit') / 3 - 1) . ' ';
+                                $tmp = ' [ /Indexed /DeviceRGB '.(mb_strlen($options['pdata'], '8bit') / 3 - 1).' ';
                                 $this->numObj++;
                                 $this->o_contents($this->numObj, 'new');
                                 $this->objects[$this->numObj]['c'] = $options['pdata'];
-                                $tmp .= $this->numObj . ' 0 R';
+                                $tmp .= $this->numObj.' 0 R';
                                 $tmp .= ' ]';
                                 $info['ColorSpace'] = $tmp;
 
@@ -2184,15 +2184,15 @@ 
                                     $transparency = $options['transparency'];
                                     switch ($transparency['type']) {
                                         case 'indexed':
-                                            $tmp = ' [ ' . $transparency['data'] . ' ' . $transparency['data'] . '] ';
+                                            $tmp = ' [ '.$transparency['data'].' '.$transparency['data'].'] ';
                                             $info['Mask'] = $tmp;
                                             break;
 
                                         case 'color-key':
-                                            $tmp = ' [ ' .
-                                                $transparency['r'] . ' ' . $transparency['r'] .
-                                                $transparency['g'] . ' ' . $transparency['g'] .
-                                                $transparency['b'] . ' ' . $transparency['b'] .
+                                            $tmp = ' [ '.
+                                                $transparency['r'].' '.$transparency['r'].
+                                                $transparency['g'].' '.$transparency['g'].
+                                                $transparency['b'].' '.$transparency['b'].
                                                 ' ] ';
                                             $info['Mask'] = $tmp;
                                             break;
@@ -2204,21 +2204,21 @@ 
 
                                     switch ($transparency['type']) {
                                         case 'indexed':
-                                            $tmp = ' [ ' . $transparency['data'] . ' ' . $transparency['data'] . '] ';
+                                            $tmp = ' [ '.$transparency['data'].' '.$transparency['data'].'] ';
                                             $info['Mask'] = $tmp;
                                             break;
 
                                         case 'color-key':
-                                            $tmp = ' [ ' .
-                                                $transparency['r'] . ' ' . $transparency['r'] . ' ' .
-                                                $transparency['g'] . ' ' . $transparency['g'] . ' ' .
-                                                $transparency['b'] . ' ' . $transparency['b'] .
+                                            $tmp = ' [ '.
+                                                $transparency['r'].' '.$transparency['r'].' '.
+                                                $transparency['g'].' '.$transparency['g'].' '.
+                                                $transparency['b'].' '.$transparency['b'].
                                                 ' ] ';
                                             $info['Mask'] = $tmp;
                                             break;
                                     }
                                 }
-                                $info['ColorSpace'] = '/' . $options['color'];
+                                $info['ColorSpace'] = '/'.$options['color'];
                             }
                         }
 
@@ -2248,7 +2248,7 @@ 
                     $tmp = $this->ARC4($tmp);
                 }
 
-                $res .= "\n/Length " . mb_strlen($tmp, '8bit') . ">>\nstream\n$tmp\nendstream\nendobj";
+                $res .= "\n/Length ".mb_strlen($tmp, '8bit').">>\nstream\n$tmp\nendstream\nendobj";
 
                 return $res;
         }
@@ -2309,7 +2309,7 @@ 
                 $res = "\n$id 0 obj\n<< /Type /ExtGState\n";
 
                 foreach ($o["info"] as $k => $v) {
-                    if (!in_array($k, $valid_params)) {
+                    if ( ! in_array($k, $valid_params)) {
                         continue;
                     }
                     $res .= "/$k $v\n";
@@ -2376,21 +2376,21 @@ 
 
                 $res .= "/Resources <<";
                 if (isset($o['procset'])) {
-                    $res .= "\n/ProcSet " . $o['procset'] . " 0 R";
+                    $res .= "\n/ProcSet ".$o['procset']." 0 R";
                 } else {
                     $res .= "\n/ProcSet [/PDF /Text /ImageB /ImageC /ImageI]";
                 }
                 if (isset($o['fonts']) && count($o['fonts'])) {
                     $res .= "\n/Font << ";
                     foreach ($o['fonts'] as $finfo) {
-                        $res .= "\n/F" . $finfo['fontNum'] . " " . $finfo['objNum'] . " 0 R";
+                        $res .= "\n/F".$finfo['fontNum']." ".$finfo['objNum']." 0 R";
                     }
                     $res .= "\n>>";
                 }
                 if (isset($o['xObjects']) && count($o['xObjects'])) {
                     $res .= "\n/XObject << ";
                     foreach ($o['xObjects'] as $finfo) {
-                        $res .= "\n/" . $finfo['label'] . " " . $finfo['objNum'] . " 0 R";
+                        $res .= "\n/".$finfo['label']." ".$finfo['objNum']." 0 R";
                     }
                     $res .= "\n>>";
                 }
@@ -2408,8 +2408,8 @@ 
                     $tmp = $this->ARC4($tmp);
                 }
 
-                $res .= "/Length " . mb_strlen($tmp, '8bit') . " >>\n";
-                $res .= "stream\n" . $tmp . "\nendstream" . "\nendobj";
+                $res .= "/Length ".mb_strlen($tmp, '8bit')." >>\n";
+                $res .= "stream\n".$tmp."\nendstream"."\nendobj";
 
                 return $res;
         }
@@ -2464,7 +2464,7 @@ 
                 if (isset($o['fonts']) && count($o['fonts'])) {
                     $res .= "/Font << \n";
                     foreach ($o['fonts'] as $finfo) {
-                        $res .= "/F" . $finfo['fontNum'] . " " . $finfo['objNum'] . " 0 R\n";
+                        $res .= "/F".$finfo['fontNum']." ".$finfo['objNum']." 0 R\n";
                     }
                     $res .= ">>\n";
                 }
@@ -2589,7 +2589,7 @@ 
 
             case 'byterange':
                 $o = &$this->objects[$id];
-                $content =& $options['content'];
+                $content = & $options['content'];
                 $content_len = strlen($content);
                 $pos = strpos($content, sprintf("/ByteRange [ %'.010d", $id));
                 $len = strlen('/ByteRange [ ********** ********** ********** ********** ]');
@@ -2597,8 +2597,8 @@ 
                 $content = substr_replace($content, str_pad(sprintf('/ByteRange [ 0 %u %u %u ]', $rangeStartPos, $rangeStartPos + $sign_maxlen + 2, $content_len - 2 - $sign_maxlen - $rangeStartPos), $len, ' ', STR_PAD_RIGHT), $pos, $len);
 
                 $fuid = uniqid();
-                $tmpInput = $this->tmp . "/pkcs7.tmp." . $fuid . '.in';
-                $tmpOutput = $this->tmp . "/pkcs7.tmp." . $fuid . '.out';
+                $tmpInput = $this->tmp."/pkcs7.tmp.".$fuid.'.in';
+                $tmpOutput = $this->tmp."/pkcs7.tmp.".$fuid.'.out';
 
                 if (file_put_contents($tmpInput, substr($content, 0, $rangeStartPos)) === false) {
                     throw new \Exception("Unable to write temporary file for signing.");
@@ -2643,12 +2643,12 @@ 
                     $this->encryptInit($id);
                 }
 
-                $res .= "/ByteRange " .sprintf("[ %'.010d ********** ********** ********** ]\n", $id);
-                $res .= "/Contents <" . str_pad('', $sign_maxlen, '0') . ">\n";
+                $res .= "/ByteRange ".sprintf("[ %'.010d ********** ********** ********** ]\n", $id);
+                $res .= "/Contents <".str_pad('', $sign_maxlen, '0').">\n";
                 $res .= "/Filter/Adobe.PPKLite\n"; //PPKMS \n";
                 $res .= "/Type/Sig/SubFilter/adbe.pkcs7.detached \n";
 
-                $date = "D:" . substr_replace(date('YmdHisO'), '\'', -2, 0) . '\'';
+                $date = "D:".substr_replace(date('YmdHisO'), '\'', -2, 0).'\'';
                 if ($encrypted) {
                     $date = $this->ARC4($date);
                 }
@@ -2664,8 +2664,8 @@ 
                         case 'Reason':
                         case 'ContactInfo':
                             if ($v !== null && $v !== '') {
-                                $res .= "/$k (" .
-                                  ($encrypted ? $this->filterText($this->ARC4($v), false, false) : $v) . ") \n";
+                                $res .= "/$k (".
+                                  ($encrypted ? $this->filterText($this->ARC4($v), false, false) : $v).") \n";
                             }
                             break;
                     }
@@ -2697,10 +2697,10 @@ 
 
             case 'keys':
                 // figure out the additional parameters required
-                $pad = chr(0x28) . chr(0xBF) . chr(0x4E) . chr(0x5E) . chr(0x4E) . chr(0x75) . chr(0x8A) . chr(0x41)
-                    . chr(0x64) . chr(0x00) . chr(0x4E) . chr(0x56) . chr(0xFF) . chr(0xFA) . chr(0x01) . chr(0x08)
-                    . chr(0x2E) . chr(0x2E) . chr(0x00) . chr(0xB6) . chr(0xD0) . chr(0x68) . chr(0x3E) . chr(0x80)
-                    . chr(0x2F) . chr(0x0C) . chr(0xA9) . chr(0xFE) . chr(0x64) . chr(0x53) . chr(0x69) . chr(0x7A);
+                $pad = chr(0x28).chr(0xBF).chr(0x4E).chr(0x5E).chr(0x4E).chr(0x75).chr(0x8A).chr(0x41)
+                    . chr(0x64).chr(0x00).chr(0x4E).chr(0x56).chr(0xFF).chr(0xFA).chr(0x01).chr(0x08)
+                    . chr(0x2E).chr(0x2E).chr(0x00).chr(0xB6).chr(0xD0).chr(0x68).chr(0x3E).chr(0x80)
+                    . chr(0x2F).chr(0x0C).chr(0xA9).chr(0xFE).chr(0x64).chr(0x53).chr(0x69).chr(0x7A);
 
                 $info = $this->objects[$id]['info'];
 
@@ -2710,7 +2710,7 @@ 
                     $owner = substr($info['owner'], 0, 32);
                 } else {
                     if ($len < 32) {
-                        $owner = $info['owner'] . substr($pad, 0, 32 - $len);
+                        $owner = $info['owner'].substr($pad, 0, 32 - $len);
                     } else {
                         $owner = $info['owner'];
                     }
@@ -2721,7 +2721,7 @@ 
                     $user = substr($info['user'], 0, 32);
                 } else {
                     if ($len < 32) {
-                        $user = $info['user'] . substr($pad, 0, 32 - $len);
+                        $user = $info['user'].substr($pad, 0, 32 - $len);
                     } else {
                         $user = $info['user'];
                     }
@@ -2735,7 +2735,7 @@ 
 
                 // now make the u value, phew.
                 $tmp = $this->md5_16(
-                    $user . $ovalue . chr($info['p']) . chr(255) . chr(255) . chr(255) . hex2bin($this->fileIdentifier)
+                    $user.$ovalue.chr($info['p']).chr(255).chr(255).chr(255).hex2bin($this->fileIdentifier)
                 );
 
                 $ukey = substr($tmp, 0, 5);
@@ -2754,11 +2754,11 @@ 
                 $res .= "\n/Filter /Standard";
                 $res .= "\n/V 1";
                 $res .= "\n/R 2";
-                $res .= "\n/O (" . $this->filterText($o['info']['O'], false, false) . ')';
-                $res .= "\n/U (" . $this->filterText($o['info']['U'], false, false) . ')';
+                $res .= "\n/O (".$this->filterText($o['info']['O'], false, false).')';
+                $res .= "\n/U (".$this->filterText($o['info']['U'], false, false).')';
                 // and the p-value needs to be converted to account for the twos-complement approach
                 $o['info']['p'] = (($o['info']['p'] ^ 255) + 1) * -1;
-                $res .= "\n/P " . ($o['info']['p']);
+                $res .= "\n/P ".($o['info']['p']);
                 $res .= "\n>>\nendobj";
 
                 return $res;
@@ -2826,7 +2826,7 @@ 
                             $filename = $entry['filename'];
                         }
 
-                        $res .= "($filename) " . $entry['dict_reference'] . " 0 R ";
+                        $res .= "($filename) ".$entry['dict_reference']." 0 R ";
                     }
 
                     $res .= "] >> endobj";
@@ -2863,7 +2863,7 @@ 
                 $description = $this->filterText($description, false, false);
 
                 $res = "\n$id 0 obj <</Type /Filespec /EF";
-                $res .= " <</F " . $info['embedded_reference'] . " 0 R >>";
+                $res .= " <</F ".$info['embedded_reference']." 0 R >>";
                 $res .= " /F ($filename) /UF ($filename) /Desc ($description)";
                 $res .= " >> endobj";
                 return $res;
@@ -2907,8 +2907,8 @@ 
                 }
                 $file_size_compressed = mb_strlen($file_content_compressed, '8bit');
 
-                $res = "\n$id 0 obj <</Params <</Size $file_size_uncompressed /CheckSum ($checksum) >>" .
-                    " /Type/EmbeddedFile /Filter/FlateDecode" .
+                $res = "\n$id 0 obj <</Params <</Size $file_size_uncompressed /CheckSum ($checksum) >>".
+                    " /Type/EmbeddedFile /Filter/FlateDecode".
                     " /Length $file_size_compressed >> stream\n$file_content_compressed\nendstream\nendobj";
 
                 return $res;
@@ -2949,7 +2949,7 @@ 
         $tmp = $this->encryptionKey;
         $hex = dechex($id);
         if (mb_strlen($hex, '8bit') < 6) {
-            $hex = substr('000000', 0, 6 - mb_strlen($hex, '8bit')) . $hex;
+            $hex = substr('000000', 0, 6 - mb_strlen($hex, '8bit')).$hex;
         }
         $tmp .= chr(hexdec(substr($hex, 4, 2)))
             . chr(hexdec(substr($hex, 2, 2)))
@@ -3128,7 +3128,7 @@ 
 
         if ($this->fileIdentifier === '') {
             $tmp = implode('', $this->objects[$this->infoObject]['info']);
-            $this->fileIdentifier = md5('DOMPDF' . __FILE__ . $tmp . microtime() . mt_rand());
+            $this->fileIdentifier = md5('DOMPDF'.__FILE__.$tmp.microtime().mt_rand());
         }
 
         if ($this->arc4_objnum) {
@@ -3139,7 +3139,7 @@ 
         $this->checkAllHere();
 
         $xref = [];
-        $content = '%PDF-' . self::PDF_VERSION;
+        $content = '%PDF-'.self::PDF_VERSION;
         $pos = mb_strlen($content, '8bit');
 
         // pre-process o_font objects before output of all objects
@@ -3150,31 +3150,31 @@ 
         }
 
         foreach ($this->objects as $k => $v) {
-            $tmp = 'o_' . $v['t'];
+            $tmp = 'o_'.$v['t'];
             $cont = $this->$tmp($k, 'out');
             $content .= $cont;
             $xref[] = $pos + 1; //+1 to account for \n at the start of each object
             $pos += mb_strlen($cont, '8bit');
         }
 
-        $content .= "\nxref\n0 " . (count($xref) + 1) . "\n0000000000 65535 f \n";
+        $content .= "\nxref\n0 ".(count($xref) + 1)."\n0000000000 65535 f \n";
 
         foreach ($xref as $p) {
-            $content .= str_pad($p, 10, "0", STR_PAD_LEFT) . " 00000 n \n";
+            $content .= str_pad($p, 10, "0", STR_PAD_LEFT)." 00000 n \n";
         }
 
-        $content .= "trailer\n<<\n" .
-            '/Size ' . (count($xref) + 1) . "\n" .
-            '/Root 1 0 R' . "\n" .
-            '/Info ' . $this->infoObject . " 0 R\n"
+        $content .= "trailer\n<<\n".
+            '/Size '.(count($xref) + 1)."\n".
+            '/Root 1 0 R'."\n".
+            '/Info '.$this->infoObject." 0 R\n"
         ;
 
         // if encryption has been applied to this document then add the marker for this dictionary
         if ($this->arc4_objnum > 0) {
-            $content .= '/Encrypt ' . $this->arc4_objnum . " 0 R\n";
+            $content .= '/Encrypt '.$this->arc4_objnum." 0 R\n";
         }
 
-        $content .= '/ID[<' . $this->fileIdentifier . '><' . $this->fileIdentifier . ">]\n";
+        $content .= '/ID[<'.$this->fileIdentifier.'><'.$this->fileIdentifier.">]\n";
 
         // account for \n added at start of xref table
         $pos++;
@@ -3183,7 +3183,7 @@ 
 
         if (count($this->byteRange) > 0) {
             foreach ($this->byteRange as $k => $v) {
-                $tmp = 'o_' . $v['t'];
+                $tmp = 'o_'.$v['t'];
                 $this->$tmp($k, 'byterange', ['content' => &$content]);
             }
         }
@@ -3257,7 +3257,7 @@ 
 
         $this->addMessage("openFont: $font - $name");
 
-        if (!$this->isUnicode || in_array(mb_strtolower(basename($name)), self::$coreFonts)) {
+        if ( ! $this->isUnicode || in_array(mb_strtolower(basename($name)), self::$coreFonts)) {
             $metrics_name = "$name.afm";
         } else {
             $metrics_name = "$name.ufm";
@@ -3266,17 +3266,17 @@ 
         $cache_name = "$metrics_name.json";
         $this->addMessage("metrics: $metrics_name, cache: $cache_name");
 
-        if (file_exists($fontcache . '/' . $cache_name)) {
+        if (file_exists($fontcache.'/'.$cache_name)) {
             $this->addMessage("openFont: json metrics file exists $fontcache/$cache_name");
-            $cached_font_info = json_decode(file_get_contents($fontcache . '/' . $cache_name), true);
-            if (!isset($cached_font_info['_version_']) || $cached_font_info['_version_'] != $this->fontcacheVersion) {
+            $cached_font_info = json_decode(file_get_contents($fontcache.'/'.$cache_name), true);
+            if ( ! isset($cached_font_info['_version_']) || $cached_font_info['_version_'] != $this->fontcacheVersion) {
                 $this->addMessage('openFont: font cache is out of date, regenerating');
             } else {
                 $this->fonts[$font] = $cached_font_info;
             }
         }
 
-        if (!isset($this->fonts[$font]) && file_exists("$dir/$metrics_name")) {
+        if ( ! isset($this->fonts[$font]) && file_exists("$dir/$metrics_name")) {
             // then rebuild the php_<font>.afm file from the <font>.afm file
             $this->addMessage("openFont: build php file from $dir/$metrics_name");
             $data = [];
@@ -3353,12 +3353,12 @@ 
                                 }
                             }
 
-                            $c = (int)$dtmp['C'];
+                            $c = (int) $dtmp['C'];
                             $n = $dtmp['N'];
                             $width = floatval($dtmp['WX']);
 
                             if ($c >= 0) {
-                                if (!ctype_xdigit($n) || $c != hexdec($n)) {
+                                if ( ! ctype_xdigit($n) || $c != hexdec($n)) {
                                     $data['codeToName'][$c] = $n;
                                 }
                                 $data['C'][$c] = $width;
@@ -3366,7 +3366,7 @@ 
                                 $data['C'][$n] = $width;
                             }
 
-                            if (!isset($data['MissingWidth']) && $c === -1 && $n === '.notdef') {
+                            if ( ! isset($data['MissingWidth']) && $c === -1 && $n === '.notdef') {
                                 $data['MissingWidth'] = $width;
                             }
 
@@ -3374,7 +3374,7 @@ 
 
                         // U 827 ; WX 0 ; N squaresubnosp ; G 675 ;
                         case 'U': // Found in UFM files
-                            if (!$data['isUnicode']) {
+                            if ( ! $data['isUnicode']) {
                                 break;
                             }
 
@@ -3399,7 +3399,7 @@ 
                                 }
                             }
 
-                            $c = (int)$dtmp['U'];
+                            $c = (int) $dtmp['U'];
                             $n = $dtmp['N'];
                             $glyph = $dtmp['G'];
                             $width = floatval($dtmp['WX']);
@@ -3411,7 +3411,7 @@ 
                                     $cidtogid[$c * 2 + 1] = chr($glyph & 0xFF);
                                 }
 
-                                if (!ctype_xdigit($n) || $c != hexdec($n)) {
+                                if ( ! ctype_xdigit($n) || $c != hexdec($n)) {
                                     $data['codeToName'][$c] = $n;
                                 }
                                 $data['C'][$c] = $width;
@@ -3419,7 +3419,7 @@ 
                                 $data['C'][$n] = $width;
                             }
 
-                            if (!isset($data['MissingWidth']) && $c === -1 && $n === '.notdef') {
+                            if ( ! isset($data['MissingWidth']) && $c === -1 && $n === '.notdef') {
                                 $data['MissingWidth'] = $width;
                             }
 
@@ -3452,7 +3452,7 @@ 
             $data = null;
         }
 
-        if (!isset($this->fonts[$font])) {
+        if ( ! isset($this->fonts[$font])) {
             $this->addMessage("openFont: no font file found for $font. Do you need to run load_font.php?");
         }
     }
@@ -3482,7 +3482,7 @@ 
             $fontName = substr($fontName, 0, mb_strlen($fontName) - 4);
         }
 
-        if (!isset($this->fonts[$fontName])) {
+        if ( ! isset($this->fonts[$fontName])) {
             $this->addMessage("selectFont: selecting - $fontName - $encoding, $set");
 
             // load the file
@@ -3619,7 +3619,7 @@ 
     {
         $new_color = [$color[0], $color[1], $color[2], isset($color[3]) ? $color[3] : null];
 
-        if (!$force && $this->currentColor == $new_color) {
+        if ( ! $force && $this->currentColor == $new_color) {
             return;
         }
 
@@ -3641,7 +3641,7 @@ 
      */
     function setFillRule($fillRule)
     {
-        if (!in_array($fillRule, ["nonzero", "evenodd"])) {
+        if ( ! in_array($fillRule, ["nonzero", "evenodd"])) {
             return;
         }
 
@@ -3658,7 +3658,7 @@ 
     {
         $new_color = [$color[0], $color[1], $color[2], isset($color[3]) ? $color[3] : null];
 
-        if (!$force && $this->currentStrokeColor == $new_color) {
+        if ( ! $force && $this->currentStrokeColor == $new_color) {
             return;
         }
 
@@ -3719,7 +3719,7 @@ 
             "Exclusion"
         ];
 
-        if (!in_array($mode, $blend_modes)) {
+        if ( ! in_array($mode, $blend_modes)) {
             $mode = "Normal";
         }
 
@@ -3739,7 +3739,7 @@ 
 
         $options = [
             "BM" => "/$mode",
-            "CA" => (float)$opacity
+            "CA" => (float) $opacity
         ];
 
         $this->setGraphicsState($options);
@@ -3774,7 +3774,7 @@ 
             "Exclusion"
         ];
 
-        if (!in_array($mode, $blend_modes)) {
+        if ( ! in_array($mode, $blend_modes)) {
             $mode = "Normal";
         }
 
@@ -3794,7 +3794,7 @@ 
 
         $options = [
             "BM" => "/$mode",
-            "ca" => (float)$opacity,
+            "ca" => (float) $opacity,
         ];
 
         $this->setGraphicsState($options);
@@ -3979,15 +3979,15 @@ 
             $nSeg = 2;
         }
 
-        $astart = deg2rad((float)$astart);
-        $afinish = deg2rad((float)$afinish);
+        $astart = deg2rad((float) $astart);
+        $afinish = deg2rad((float) $afinish);
         $totalAngle = $afinish - $astart;
 
         $dt = $totalAngle / $nSeg;
         $dtm = $dt / 3;
 
         if ($angle != 0) {
-            $a = -1 * deg2rad((float)$angle);
+            $a = -1 * deg2rad((float) $angle);
 
             $this->addContent(
                 sprintf("\n q %.3F %.3F %.3F %.3F %.3F %.3F cm", cos($a), -sin($a), sin($a), cos($a), $x0, $y0)
@@ -4003,7 +4003,7 @@ 
         $c0 = -$r1 * sin($t1);
         $d0 = $r2 * cos($t1);
 
-        if (!$incomplete) {
+        if ( ! $incomplete) {
             $this->addContent(sprintf("\n%.3F %.3F m ", $a0, $b0));
         }
 
@@ -4033,7 +4033,7 @@ 
             $d0 = $d1;
         }
 
-        if (!$incomplete) {
+        if ( ! $incomplete) {
             if ($fill) {
                 $this->addContent(' f');
             }
@@ -4093,7 +4093,7 @@ 
         }
 
         if (is_array($dash)) {
-            $string .= ' [ ' . implode(' ', $dash) . " ] $phase d";
+            $string .= ' [ '.implode(' ', $dash)." ] $phase d";
         }
 
         $this->currentLineStyle = $string;
@@ -4166,17 +4166,17 @@ 
 
     function stroke(bool $close = false)
     {
-        $this->addContent("\n" . ($close ? "s" : "S"));
+        $this->addContent("\n".($close ? "s" : "S"));
     }
 
     function fill()
     {
-        $this->addContent("\nf" . ($this->fillRule === "evenodd" ? "*" : ""));
+        $this->addContent("\nf".($this->fillRule === "evenodd" ? "*" : ""));
     }
 
     function fillStroke(bool $close = false)
     {
-        $this->addContent("\n" . ($close ? "b" : "B") . ($this->fillRule === "evenodd" ? "*" : ""));
+        $this->addContent("\n".($close ? "b" : "B").($this->fillRule === "evenodd" ? "*" : ""));
     }
 
     /**
@@ -4262,16 +4262,16 @@ 
      */
     public function addFormField($type, $name, $x0, $y0, $x1, $y1, $ff = 0, $size = 10.0, $color = [0, 0, 0])
     {
-        if (!$this->numFonts) {
+        if ( ! $this->numFonts) {
             $this->selectFont($this->defaultFont);
         }
 
-        $color = implode(' ', $color) . ' rg';
+        $color = implode(' ', $color).' rg';
 
         $currentFontNum = $this->currentFontNum;
         $font = array_filter(
             $this->objects[$this->currentNode]['info']['fonts'],
-            function ($item) use ($currentFontNum) { return $item['fontNum'] == $currentFontNum; }
+            function($item) use ($currentFontNum) { return $item['fontNum'] == $currentFontNum; }
         );
 
         $this->o_acroform($this->acroFormId, 'font',
@@ -4285,7 +4285,7 @@ 
           'T' => $name,
           'Ff' => $ff,
           'pageid' => $this->currentPage,
-          'da' => "$color /F$this->currentFontNum " . sprintf('%.1F Tf ', $size)
+          'da' => "$color /F$this->currentFontNum ".sprintf('%.1F Tf ', $size)
         ]);
 
         return $fieldId;
@@ -4652,17 +4652,17 @@ 
             die("Unable to stream pdf: headers already sent");
         }
 
-        if (!isset($options["compress"])) $options["compress"] = true;
-        if (!isset($options["Attachment"])) $options["Attachment"] = true;
+        if ( ! isset($options["compress"])) $options["compress"] = true;
+        if ( ! isset($options["Attachment"])) $options["Attachment"] = true;
 
-        $debug = !$options['compress'];
+        $debug = ! $options['compress'];
         $tmp = ltrim($this->output($debug));
 
         header("Cache-Control: private");
         header("Content-Type: application/pdf");
-        header("Content-Length: " . mb_strlen($tmp, "8bit"));
+        header("Content-Length: ".mb_strlen($tmp, "8bit"));
 
-        $filename = str_replace(["\n", "'"], "", basename($filename, ".pdf")) . ".pdf";
+        $filename = str_replace(["\n", "'"], "", basename($filename, ".pdf")).".pdf";
         $attachment = $options["Attachment"] ? "attachment" : "inline";
 
         $encoding = mb_detect_encoding($filename);
@@ -4689,7 +4689,7 @@ 
      */
     public function getFontHeight(float $size): float
     {
-        if (!$this->numFonts) {
+        if ( ! $this->numFonts) {
             $this->selectFont($this->defaultFont);
         }
 
@@ -4712,7 +4712,7 @@ 
             // Courier font.
             //
             // Both have been added manually to the .afm and .ufm files.
-            $h += (int)$font['FontHeightOffset'];
+            $h += (int) $font['FontHeightOffset'];
         }
 
         return $size * $h / 1000;
@@ -4725,7 +4725,7 @@ 
      */
     public function getFontXHeight(float $size): float
     {
-        if (!$this->numFonts) {
+        if ( ! $this->numFonts) {
             $this->selectFont($this->defaultFont);
         }
 
@@ -4753,7 +4753,7 @@ 
     public function getFontDescender(float $size): float
     {
         // note that this will most likely return a negative value
-        if (!$this->numFonts) {
+        if ( ! $this->numFonts) {
             $this->selectFont($this->defaultFont);
         }
 
@@ -4774,7 +4774,7 @@ 
      */
     function filterText($text, $bom = true, $convert_encoding = true)
     {
-        if (!$this->numFonts) {
+        if ( ! $this->numFonts) {
             $this->selectFont($this->defaultFont);
         }
 
@@ -4884,12 +4884,12 @@ 
             if ($c === 0xFFFD) {
                 $out .= "\xFF\xFD"; // replacement character
             } elseif ($c < 0x10000) {
-                $out .= chr($c >> 0x08) . chr($c & 0xFF);
+                $out .= chr($c >> 0x08).chr($c & 0xFF);
             } else {
                 $c -= 0x10000;
                 $w1 = 0xD800 | ($c >> 0x10);
                 $w2 = 0xDC00 | ($c & 0x3FF);
-                $out .= chr($w1 >> 0x08) . chr($w1 & 0xFF) . chr($w2 >> 0x08) . chr($w2 & 0xFF);
+                $out .= chr($w1 >> 0x08).chr($w1 & 0xFF).chr($w2 >> 0x08).chr($w2 & 0xFF);
             }
         }
 
@@ -4917,7 +4917,7 @@ 
         $words = explode(' ', $text);
         $nspaces = count($words) - 1;
         $w += $wa * $nspaces;
-        $a = deg2rad((float)$angle);
+        $a = deg2rad((float) $angle);
 
         return [cos($a) * $w + $x, -sin($a) * $w + $y];
     }
@@ -4952,11 +4952,11 @@ 
      */
     function registerText($font, $text)
     {
-        if (!$this->isUnicode || in_array(mb_strtolower(basename($font)), self::$coreFonts)) {
+        if ( ! $this->isUnicode || in_array(mb_strtolower(basename($font)), self::$coreFonts)) {
             return;
         }
 
-        if (!isset($this->stringSubsets[$font])) {
+        if ( ! isset($this->stringSubsets[$font])) {
             $base_subset = "\u{fffd}\u{fffe}\u{ffff}";
             $this->stringSubsets[$font] = $this->utf8toCodePointsArray($base_subset);
         }
@@ -4980,7 +4980,7 @@ 
      */
     function addText($x, $y, $size, $text, $angle = 0, $wordSpaceAdjust = 0, $charSpaceAdjust = 0, $smallCaps = false)
     {
-        if (!$this->numFonts) {
+        if ( ! $this->numFonts) {
             $this->selectFont($this->defaultFont);
         }
 
@@ -5021,7 +5021,7 @@ 
         if ($angle == 0) {
             $this->addContent(sprintf("\nBT %.3F %.3F Td", $x, $y));
         } else {
-            $a = deg2rad((float)$angle);
+            $a = deg2rad((float) $angle);
             $this->addContent(
                 sprintf("\nBT %.3F %.3F %.3F %.3F %.3F %.3F Tm", cos($a), -sin($a), sin($a), cos($a), $x, $y)
             );
@@ -5044,9 +5044,9 @@ 
             // modify unicode text so that extra word spacing is manually implemented (bug #)
             if ($this->fonts[$this->currentFont]['isUnicode'] && $wordSpaceAdjust != 0) {
                 $space_scale = 1000 / $size;
-                $place_text = str_replace("\x00\x20", "\x00\x20)\x00\x20" . (-round($space_scale * $wordSpaceAdjust)) . "\x00\x20(", $place_text);
+                $place_text = str_replace("\x00\x20", "\x00\x20)\x00\x20".(-round($space_scale * $wordSpaceAdjust))."\x00\x20(", $place_text);
             }
-            $this->addContent(" /F$this->currentFontNum " . sprintf('%.1F Tf ', $size));
+            $this->addContent(" /F$this->currentFontNum ".sprintf('%.1F Tf ', $size));
             $this->addContent(" [($place_text)] TJ");
         }
 
@@ -5105,7 +5105,7 @@ 
         // and put them back at the end.
         $store_currentTextState = $this->currentTextState;
 
-        if (!$this->numFonts) {
+        if ( ! $this->numFonts) {
             $this->selectFont($this->defaultFont);
         }
 
@@ -5206,7 +5206,7 @@ 
             // ok to use this as stack starts numbering at 1
             $this->setColor($opt['col'], true);
             $this->setStrokeColor($opt['str'], true);
-            $this->addContent("\n" . $opt['lin']);
+            $this->addContent("\n".$opt['lin']);
             //    $this->currentLineStyle = $opt['lin'];
         } else {
             $this->nStateStack++;
@@ -5227,11 +5227,11 @@ 
      */
     function restoreState($pageEnd = 0)
     {
-        if (!$pageEnd) {
+        if ( ! $pageEnd) {
             $n = $this->nStateStack;
             $this->currentColor = $this->stateStack[$n]['col'];
             $this->currentStrokeColor = $this->stateStack[$n]['str'];
-            $this->addContent("\n" . $this->stateStack[$n]['lin']);
+            $this->addContent("\n".$this->stateStack[$n]['lin']);
             $this->currentLineStyle = $this->stateStack[$n]['lin'];
             $this->stateStack[$n] = null;
             unset($this->stateStack[$n]);
@@ -5505,7 +5505,7 @@ 
      */
     function addImagePng(&$img, $file, $x, $y, $w = 0.0, $h = 0.0, $is_mask = false, $mask = null)
     {
-        if (!function_exists("imagepng")) {
+        if ( ! function_exists("imagepng")) {
             throw new \Exception("The PHP GD extension is required, but is not installed.");
         }
 
@@ -5531,7 +5531,7 @@ 
             //DEBUG_IMG_TEMP
             //debugpng
             if (defined("DEBUGPNG") && DEBUGPNG) {
-                print '[addImagePng ' . $file . ']';
+                print '[addImagePng '.$file.']';
             }
 
             ob_start();
@@ -5549,7 +5549,7 @@ 
             }
 
             if ($error) {
-                $this->addMessage('PNG error - (' . $file . ') ' . $errormsg);
+                $this->addMessage('PNG error - ('.$file.') '.$errormsg);
 
                 return;
             }
@@ -5700,9 +5700,9 @@ 
                         // without gamma correction
                         $pixel = (127 - $alpha) * 2;
 
-                        $key = $col['red'] . $col['green'] . $col['blue'];
+                        $key = $col['red'].$col['green'].$col['blue'];
 
-                        if (!isset($allocated_colors[$key])) {
+                        if ( ! isset($allocated_colors[$key])) {
                             $pixel_img = imagecolorallocate($img, $col['red'], $col['green'], $col['blue']);
                             $allocated_colors[$key] = $pixel_img;
                         } else {
@@ -5753,7 +5753,7 @@ 
      */
     function addPngFromFile($file, $x, $y, $w = 0, $h = 0)
     {
-        if (!function_exists("imagecreatefrompng")) {
+        if ( ! function_exists("imagecreatefrompng")) {
             throw new \Exception("The PHP GD extension is required, but is not installed.");
         }
 
@@ -5801,7 +5801,7 @@ 
             //Therefore create an empty image with white background and merge the
             //image in with alpha blending.
             $imgtmp = @imagecreatefrompng($file);
-            if (!$imgtmp) {
+            if ( ! $imgtmp) {
                 return;
             }
             $sx = imagesx($imgtmp);
@@ -5858,21 +5858,21 @@ 
 
             $error = 0;
 
-            if (!$error) {
-                $header = chr(137) . chr(80) . chr(78) . chr(71) . chr(13) . chr(10) . chr(26) . chr(10);
+            if ( ! $error) {
+                $header = chr(137).chr(80).chr(78).chr(71).chr(13).chr(10).chr(26).chr(10);
 
                 if (mb_substr($data, 0, 8, '8bit') != $header) {
                     $error = 1;
 
                     if (defined("DEBUGPNG") && DEBUGPNG) {
-                        print '[addPngFromFile this file does not have a valid header ' . $file . ']';
+                        print '[addPngFromFile this file does not have a valid header '.$file.']';
                     }
 
                     $errormsg = 'this file does not have a valid header';
                 }
             }
 
-            if (!$error) {
+            if ( ! $error) {
                 // set pointer
                 $p = 8;
                 $len = mb_strlen($data, '8bit');
@@ -5905,7 +5905,7 @@ 
 
                                 //debugpng
                                 if (defined("DEBUGPNG") && DEBUGPNG) {
-                                    print '[addPngFromFile unsupported compression method ' . $file . ']';
+                                    print '[addPngFromFile unsupported compression method '.$file.']';
                                 }
 
                                 $errormsg = 'unsupported compression method';
@@ -5916,7 +5916,7 @@ 
 
                                 //debugpng
                                 if (defined("DEBUGPNG") && DEBUGPNG) {
-                                    print '[addPngFromFile unsupported filter method ' . $file . ']';
+                                    print '[addPngFromFile unsupported filter method '.$file.']';
                                 }
 
                                 $errormsg = 'unsupported filter method';
@@ -5988,7 +5988,7 @@ 
                                 //unsupported transparency type
                                 default:
                                     if (defined("DEBUGPNG") && DEBUGPNG) {
-                                        print '[addPngFromFile unsupported transparency type ' . $file . ']';
+                                        print '[addPngFromFile unsupported transparency type '.$file.']';
                                     }
                                     break;
                             }
@@ -6003,12 +6003,12 @@ 
                     $p += $chunkLen + 12;
                 }
 
-                if (!$haveHeader) {
+                if ( ! $haveHeader) {
                     $error = 1;
 
                     //debugpng
                     if (defined("DEBUGPNG") && DEBUGPNG) {
-                        print '[addPngFromFile information header is missing ' . $file . ']';
+                        print '[addPngFromFile information header is missing '.$file.']';
                     }
 
                     $errormsg = 'information header is missing';
@@ -6019,25 +6019,25 @@ 
 
                     //debugpng
                     if (defined("DEBUGPNG") && DEBUGPNG) {
-                        print '[addPngFromFile no support for interlaced images in pdf ' . $file . ']';
+                        print '[addPngFromFile no support for interlaced images in pdf '.$file.']';
                     }
 
                     $errormsg = 'There appears to be no support for interlaced images in pdf.';
                 }
             }
 
-            if (!$error && $info['bitDepth'] > 8) {
+            if ( ! $error && $info['bitDepth'] > 8) {
                 $error = 1;
 
                 //debugpng
                 if (defined("DEBUGPNG") && DEBUGPNG) {
-                    print '[addPngFromFile bit depth of 8 or less is supported ' . $file . ']';
+                    print '[addPngFromFile bit depth of 8 or less is supported '.$file.']';
                 }
 
                 $errormsg = 'only bit depth of 8 or less is supported';
             }
 
-            if (!$error) {
+            if ( ! $error) {
                 switch ($info['colorType']) {
                     case 3:
                         $color = 'DeviceRGB';
@@ -6059,7 +6059,7 @@ 
 
                         //debugpng
                         if (defined("DEBUGPNG") && DEBUGPNG) {
-                            print '[addPngFromFile alpha channel not supported: ' . $info['colorType'] . ' ' . $file . ']';
+                            print '[addPngFromFile alpha channel not supported: '.$info['colorType'].' '.$file.']';
                         }
 
                         $errormsg = 'transparency alpha channel not supported, transparency only supported for palette images.';
@@ -6067,7 +6067,7 @@ 
             }
 
             if ($error) {
-                $this->addMessage('PNG error - (' . $file . ') ' . $errormsg);
+                $this->addMessage('PNG error - ('.$file.') '.$errormsg);
 
                 return;
             }
@@ -6136,7 +6136,7 @@ 
         // attempt to add a jpeg image straight from a file, using no GD commands
         // note that this function is unable to operate on a remote file.
 
-        if (!file_exists($img)) {
+        if ( ! file_exists($img)) {
             return;
         }
 
@@ -6204,7 +6204,7 @@ 
 
         } else {
             if ($data == null) {
-                $this->addMessage('addJpegImage_common error - (' . $imgname . ') data not present!');
+                $this->addMessage('addJpegImage_common error - ('.$imgname.') data not present!');
 
                 return;
             }
@@ -6315,7 +6315,7 @@ 
      */
     function setFontFamily($family, $options = '')
     {
-        if (!is_array($options)) {
+        if ( ! is_array($options)) {
             if ($family === 'init') {
                 // set the known family groups
                 // these font families will be used to enable bold and italic markers to be included
@@ -6361,7 +6361,7 @@ 
      */
     function addMessage($message)
     {
-        $this->messages .= $message . "\n";
+        $this->messages .= $message."\n";
     }
 
     /**

vendor/phenx/php-svg-lib/src/Svg/Gradient/Stop.php

Indentation +3 added lines, -3 removed lines

@@ -10,7 +10,7 @@
 
 class Stop
 {
-    public $offset;
-    public $color;
-    public $opacity = 1.0;
+	public $offset;
+	public $color;
+	public $opacity = 1.0;
 }