Ico::loadFile() - Code Metrics - Inspection of "Merge pull request #1 from lordelph/refactor" - lordelph/icofileloader - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Branch — master (99fd1f)

by Paul

created 2017-01-20 14:29 UTC

Ico::loadFile() A

↳ Parent: Ico

Complexity

Conditions	3
Paths	3

Size

Total Lines	15
Code Lines	9

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	8
CRAP Score	3.0123

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
c	1
b	0
f	0
dl	0
loc	15
ccs	8
cts	9
cp	0.8889
rs	9.4285
cc	3
eloc	9
nc	3
nop	1
crap	3.0123

<?php

namespace Elphin\IcoFileLoader;

/**
 * Open ICO files and extract any size/depth to PNG format.
 */
class Ico
{
    /**
     * Background color on icon extraction.
     * @var array(R, G, B) = array(255, 255, 255)
     */
    public $bgcolor = [255, 255, 255];

    /**
     * @var bool Is background color transparent?
     */
    public $bgcolorTransparent = false;

    private $filename;
    private $ico;
    private $formats;

    /**
     * Constructor
     *
     * @param string $path optional path to ICO file
     */
    public function __construct($path = '')
    {
        if (strlen($path) > 0) {
            $this->loadFile($path);
        }
    }

    /**
     * Load an ICO file (don't need to call this is if fill the
     * parameter in the class constructor).
     *
     * @param string $path Path to ICO file
     *
     * @return bool Success
     */
    public function loadFile($path)
    {
        $this->filename = $path;
        if (($fp = @fopen($path, 'rb')) !== false) {
            $data = '';
            while (!feof($fp)) {
                $data .= fread($fp, 4096);
            }
            fclose($fp);

            return $this->loadData($data);
        }

        return false;
    }

    /**
     * Load an ICO data. If you prefer to open the file
     * and return the binary data you can use this function
     * directly. Otherwise use loadFile() instead.
     *
     * @param string $data Binary data of ICO file
     *
     * @return bool Success
     */
    private function loadData($data)
    {
        $this->formats = [];

        /**
         * ICO header.
         **/
        $icodata = unpack('SReserved/SType/SCount', $data);
        $this->ico = $icodata;
        $data = substr($data, 6);

        /*
         * Extract each icon header
         **/
        for ($i = 0; $i < $this->ico['Count']; ++$i) {
            $icodata = unpack('CWidth/CHeight/CColorCount/CReserved/SPlanes/SBitCount/LSizeInBytes/LFileOffset', $data);
            $icodata['FileOffset'] -= ($this->ico['Count'] * 16) + 6;
            if ($icodata['ColorCount'] == 0) {
                $icodata['ColorCount'] = 256;
            }
            $this->formats[] = $icodata;

            $data = substr($data, 16);
        }

        /*
         * Extract aditional headers for each extracted icon header
         **/
        $formatCount = count($this->formats);
        for ($i = 0; $i < $formatCount; ++$i) {
            $icodata = unpack(
                'LSize/LWidth/LHeight/SPlanes/SBitCount/LCompression/LImageSize/' .
                'LXpixelsPerM/LYpixelsPerM/LColorsUsed/LColorsImportant',
                substr($data, $this->formats[$i]['FileOffset'])
            );

            $this->formats[$i]['header'] = $icodata;
            $this->formats[$i]['colors'] = [];

            $this->formats[$i]['BitCount'] = $this->formats[$i]['header']['BitCount'];

            switch ($this->formats[$i]['BitCount']) {
                case 32:
                case 24:
                    $length = $this->formats[$i]['header']['Width'] *
                        $this->formats[$i]['header']['Height'] *
                        ($this->formats[$i]['BitCount'] / 8);
                    $this->formats[$i]['data'] = substr(
                        $data,
                        $this->formats[$i]['FileOffset'] + $this->formats[$i]['header']['Size'],
                        $length
                    );
                    break;
                case 8:
                case 4:
                    $icodata = substr(
                        $data,
                        $this->formats[$i]['FileOffset'] + $icodata['Size'],
                        $this->formats[$i]['ColorCount'] * 4
                    );
                    $offset = 0;
                    for ($j = 0; $j < $this->formats[$i]['ColorCount']; ++$j) {
                        $this->formats[$i]['colors'][] = [
                            'blue' => ord($icodata[$offset]),
                            'green' => ord($icodata[$offset + 1]),
                            'red' => ord($icodata[$offset + 2]),
                            'reserved' => ord($icodata[$offset + 3]),
                        ];
                        $offset += 4;
                    }
                    $length = $this->formats[$i]['header']['Width'] *
                        $this->formats[$i]['header']['Height'] *
                        (1 + $this->formats[$i]['BitCount']) / $this->formats[$i]['BitCount'];
                    $this->formats[$i]['data'] = substr(
                        $data,
                        $this->formats[$i]['FileOffset'] +
                        ($this->formats[$i]['ColorCount'] * 4) +
                        $this->formats[$i]['header']['Size'],
                        $length
                    );
                    break;
                case 1:
                    $icodata = substr(
                        $data,
                        $this->formats[$i]['FileOffset'] + $icodata['Size'],
                        $this->formats[$i]['ColorCount'] * 4
                    );

                    $this->formats[$i]['colors'][] = [
                        'blue' => ord($icodata[0]),
                        'green' => ord($icodata[1]),
                        'red' => ord($icodata[2]),
                        'reserved' => ord($icodata[3]),
                    ];
                    $this->formats[$i]['colors'][] = [
                        'blue' => ord($icodata[4]),
                        'green' => ord($icodata[5]),
                        'red' => ord($icodata[6]),
                        'reserved' => ord($icodata[7]),
                    ];

                    $length = $this->formats[$i]['header']['Width'] * $this->formats[$i]['header']['Height'] / 8;
                    $this->formats[$i]['data'] = substr(
                        $data,
                        $this->formats[$i]['FileOffset'] + $this->formats[$i]['header']['Size'] + 8,
                        $length
                    );
                    break;
            }
            $this->formats[$i]['data_length'] = strlen($this->formats[$i]['data']);
        }

        return true;
    }

    /**
     * Return the total icons extracted at the moment.
     *
     * @return int Total icons
     */
    public function getTotalIcons()
    {
        return count($this->formats);
    }

    /**
     * Return the icon header corresponding to that index.
     *
     * @param int $index Icon index
     *
     * @return resource|bool Icon header or false
     */
    public function getIconInfo($index)
    {
        if (isset($this->formats[$index])) {
            return $this->formats[$index];
        }

        return false;
    }

    /**
     * Changes background color of extraction. You can set
     * the 3 color components or set $red = '#xxxxxx' (HTML format)
     * and leave all other blanks.
     *
     * @param int $red Red component
     * @param int $green Green component
     * @param int $blue Blue component
     */
    public function setBackground($red = 255, $green = 255, $blue = 255)
    {
        if (is_string($red) && preg_match('/^\#[0-9a-f]{6}$/', $red)) {
            $green = hexdec($red[3] . $red[4]);
            $blue = hexdec($red[5] . $red[6]);
            $red = hexdec($red[1] . $red[2]);
        }

        $this->bgcolor = [$red, $green, $blue];
    }

    /**
     * Set background color to be saved as transparent.
     *
     * @param bool $transparent Is Transparent or not
     *
     * @return bool Is Transparent or not
     */
    public function setBackgroundTransparent($transparent = true)
    {
        return $this->bgcolorTransparent = $transparent;
    }

    /**
     * Return an image resource with the icon stored
     * on the $index position of the ICO file.
     *
     * @param int $index Position of the icon inside ICO
     *
     * @return resource|bool Image resource
     **/
    public function getImage($index)
    {
        if (!isset($this->formats[$index])) {
            return false;
        }

        // create image filled with desired background color
        $im = imagecreatetruecolor($this->formats[$index]['Width'], $this->formats[$index]['Height']);
        $bgcolor = $this->allocateColor($im, $this->bgcolor[0], $this->bgcolor[1], $this->bgcolor[2]);
        imagefilledrectangle($im, 0, 0, $this->formats[$index]['Width'], $this->formats[$index]['Height'], $bgcolor);

        if ($this->bgcolorTransparent) {
            imagecolortransparent($im, $bgcolor);
        }

        //we may build a string of 1/0 to represent the XOR mask
        $maskBits = '';
        //we may build a palette for 8 bit images
        $palette = [];

        // allocate palette and get XOR image
        if (in_array($this->formats[$index]['BitCount'], [1, 4, 8, 24])) {
            if ($this->formats[$index]['BitCount'] != 24) {
                $palette = [];
                for ($i = 0; $i < $this->formats[$index]['ColorCount']; ++$i) {
                    $palette[$i] = $this->allocateColor(
                        $im,
                        $this->formats[$index]['colors'][$i]['red'],
                        $this->formats[$index]['colors'][$i]['green'],
                        $this->formats[$index]['colors'][$i]['blue'],
                        round($this->formats[$index]['colors'][$i]['reserved'] / 255 * 127)
                    );
                }
            }

            // build XOR mask bits
            $width = $this->formats[$index]['Width'];
            if (($width % 32) > 0) {
                $width += (32 - ($this->formats[$index]['Width'] % 32));
            }
            $offset = $this->formats[$index]['Width'] *
                $this->formats[$index]['Height'] *
                $this->formats[$index]['BitCount'] / 8;
            $total_bytes = ($width * $this->formats[$index]['Height']) / 8;
            $maskBits = '';
            $bytes = 0;
            $bytes_per_line = ($this->formats[$index]['Width'] / 8);
            $bytes_to_remove = (($width - $this->formats[$index]['Width']) / 8);
            for ($i = 0; $i < $total_bytes; ++$i) {
                $maskBits .= str_pad(decbin(ord($this->formats[$index]['data'][$offset + $i])), 8, '0', STR_PAD_LEFT);
                ++$bytes;
                if ($bytes == $bytes_per_line) {
                    $i += $bytes_to_remove;
                    $bytes = 0;
                }
            }
        }

        // now paint pixels based on bit count
        switch ($this->formats[$index]['BitCount']) {
            case 32:
                /**
                 * 32 bits: 4 bytes per pixel [ B | G | R | ALPHA ].
                 **/
                $offset = 0;
                for ($i = $this->formats[$index]['Height'] - 1; $i >= 0; --$i) {
                    for ($j = 0; $j < $this->formats[$index]['Width']; ++$j) {
                        $color = substr($this->formats[$index]['data'], $offset, 4);
                        if (ord($color[3]) > 0) {
                            $palette = $this->allocateColor(
                                $im,
                                ord($color[2]),
                                ord($color[1]),
                                ord($color[0]),
                                127 - round(ord($color[3]) / 255 * 127)
                            );
                            imagesetpixel($im, $j, $i, $palette);
                        }
                        $offset += 4;
                    }
                }
                break;
            case 24:
                /**
                 * 24 bits: 3 bytes per pixel [ B | G | R ].
                 **/
                $offset = 0;
                $bitoffset = 0;
                for ($i = $this->formats[$index]['Height'] - 1; $i >= 0; --$i) {
                    for ($j = 0; $j < $this->formats[$index]['Width']; ++$j) {
                        if ($maskBits[$bitoffset] == 0) {
                            $color = substr($this->formats[$index]['data'], $offset, 3);
                            $palette = $this->allocateColor($im, ord($color[2]), ord($color[1]), ord($color[0]));
                            imagesetpixel($im, $j, $i, $palette);
                        }
                        $offset += 3;
                        ++$bitoffset;
                    }
                }
                break;
            case 8:
                /**
                 * 8 bits: 1 byte per pixel [ COLOR INDEX ].
                 **/
                $offset = 0;
                for ($i = $this->formats[$index]['Height'] - 1; $i >= 0; --$i) {
                    for ($j = 0; $j < $this->formats[$index]['Width']; ++$j) {
                        if ($maskBits[$offset] == 0) {
                            $color = ord(substr($this->formats[$index]['data'], $offset, 1));
                            imagesetpixel($im, $j, $i, $palette[$color]);
                        }
                        ++$offset;
                    }
                }
                break;
            case 4:
                /**
                 * 4 bits: half byte/nibble per pixel [ COLOR INDEX ].
                 **/
                $offset = 0;
                $maskoffset = 0;
                for ($i = $this->formats[$index]['Height'] - 1; $i >= 0; --$i) {
                    for ($j = 0; $j < $this->formats[$index]['Width']; $j += 2) {
                        $colorByte = ord($this->formats[$index]['data'][$offset]);
                        $lowNibble = $colorByte & 0x0f;
                        $highNibble = ($colorByte & 0xf0) >> 4;

                        if ($maskBits[$maskoffset++] == 0) {
                            imagesetpixel($im, $j, $i, $palette[$highNibble]);
                        }

                        if ($maskBits[$maskoffset++] == 0) {
                            imagesetpixel($im, $j + 1, $i, $palette[$lowNibble]);
                        }
                        $offset++;
                    }
                }
                break;
            case 1:
                /**
                 * 1 bit: 1 bit per pixel (2 colors, usually black&white) [ COLOR INDEX ].
                 **/
                $colorbits = '';
                $total = strlen($this->formats[$index]['data']);
                for ($i = 0; $i < $total; ++$i) {
                    $colorbits .= str_pad(decbin(ord($this->formats[$index]['data'][$i])), 8, '0', STR_PAD_LEFT);
                }

                $offset = 0;
                for ($i = $this->formats[$index]['Height'] - 1; $i >= 0; --$i) {
                    for ($j = 0; $j < $this->formats[$index]['Width']; ++$j) {
                        if ($maskBits[$offset] == 0) {
                            imagesetpixel($im, $j, $i, $palette[$colorbits[$offset]]);
                        }
                        ++$offset;
                    }
                }
                break;
        }

        return $im;
    }

    /**
     * Allocate a color on $im resource. This function prevents
     * from allocating same colors on the same pallete. Instead
     * if it finds that the color is already allocated, it only
     * returns the index to that color.
     * It supports alpha channel.
     *
     * @param resource $im Image resource
     * @param int $red Red component
     * @param int $green Green component
     * @param int $blue Blue component
     * @param int $alpha Alpha channel
     *
     * @return int Color index
     */
    private function allocateColor(&$im, $red, $green, $blue, $alpha = 0)
    {
        $c = imagecolorexactalpha($im, $red, $green, $blue, $alpha);
        if ($c >= 0) {
            return $c;
        }

        return imagecolorallocatealpha($im, $red, $green, $blue, $alpha);
    }
}


1		<?php
2
3		namespace Elphin\IcoFileLoader;
4
5		/**
6		* Open ICO files and extract any size/depth to PNG format.
7		*/
8		class Ico
9		{
10		/**
11		* Background color on icon extraction.
12		* @var array(R, G, B) = array(255, 255, 255)
13		*/
14		public $bgcolor = [255, 255, 255];
15
16		/**
17		* @var bool Is background color transparent?
18		*/
19		public $bgcolorTransparent = false;
20
21		private $filename;
22		private $ico;
23		private $formats;
24
25		/**
26		* Constructor
27		*
28		* @param string $path optional path to ICO file
29		*/
30	5	public function __construct($path = '')
31		{
32	5	if (strlen($path) > 0) {
33	4	$this->loadFile($path);
34		}
35	5	}
36
37		/**
38		* Load an ICO file (don't need to call this is if fill the
39		* parameter in the class constructor).
40		*
41		* @param string $path Path to ICO file
42		*
43		* @return bool Success
44		*/
45	5	public function loadFile($path)
46		{
47	5	$this->filename = $path;
48	5	if (($fp = @fopen($path, 'rb')) !== false) {
49	5	$data = '';
50	5	while (!feof($fp)) {
51	5	$data .= fread($fp, 4096);
52		}
53	5	fclose($fp);
54
55	5	return $this->loadData($data);
56		}
57
58		return false;
59		}
60
61		/**
62		* Load an ICO data. If you prefer to open the file
63		* and return the binary data you can use this function
64		* directly. Otherwise use loadFile() instead.
65		*
66		* @param string $data Binary data of ICO file
67		*
68		* @return bool Success
69		*/
70	5	private function loadData($data)
71		{
72	5	$this->formats = [];
73
74		/**
75		* ICO header.
76		**/
77	5	$icodata = unpack('SReserved/SType/SCount', $data);
78	5	$this->ico = $icodata;
79	5	$data = substr($data, 6);
80
81		/*
82		* Extract each icon header
83		**/
84	5	for ($i = 0; $i < $this->ico['Count']; ++$i) {
85	5	$icodata = unpack('CWidth/CHeight/CColorCount/CReserved/SPlanes/SBitCount/LSizeInBytes/LFileOffset', $data);
86	5	$icodata['FileOffset'] -= ($this->ico['Count'] * 16) + 6;
87	5	if ($icodata['ColorCount'] == 0) {
88	3	$icodata['ColorCount'] = 256;
89		}
90	5	$this->formats[] = $icodata;
91
92	5	$data = substr($data, 16);
93		}
94
95		/*
96		* Extract aditional headers for each extracted icon header
97		**/
98	5	$formatCount = count($this->formats);
99	5	for ($i = 0; $i < $formatCount; ++$i) {
100	5	$icodata = unpack(
101		'LSize/LWidth/LHeight/SPlanes/SBitCount/LCompression/LImageSize/' .
102	5	'LXpixelsPerM/LYpixelsPerM/LColorsUsed/LColorsImportant',
103	5	substr($data, $this->formats[$i]['FileOffset'])
104		);
105
106	5	$this->formats[$i]['header'] = $icodata;
107	5	$this->formats[$i]['colors'] = [];
108
109	5	$this->formats[$i]['BitCount'] = $this->formats[$i]['header']['BitCount'];
110
111	5	switch ($this->formats[$i]['BitCount']) {
112	5	case 32:
113	4	case 24:
114	2	$length = $this->formats[$i]['header']['Width'] *
115	2	$this->formats[$i]['header']['Height'] *
116	2	($this->formats[$i]['BitCount'] / 8);
117	2	$this->formats[$i]['data'] = substr(
118		$data,
119	2	$this->formats[$i]['FileOffset'] + $this->formats[$i]['header']['Size'],
120		$length
121		);
122	2	break;
123	3	case 8:
124	3	case 4:
125	2	$icodata = substr(
126		$data,
127	2	$this->formats[$i]['FileOffset'] + $icodata['Size'],
128	2	$this->formats[$i]['ColorCount'] * 4
129		);
130	2	$offset = 0;
131	2	for ($j = 0; $j < $this->formats[$i]['ColorCount']; ++$j) {
132	2	$this->formats[$i]['colors'][] = [
133	2	'blue' => ord($icodata[$offset]),
134	2	'green' => ord($icodata[$offset + 1]),
135	2	'red' => ord($icodata[$offset + 2]),
136	2	'reserved' => ord($icodata[$offset + 3]),
137		];
138	2	$offset += 4;
139		}
140	2	$length = $this->formats[$i]['header']['Width'] *
141	2	$this->formats[$i]['header']['Height'] *
142	2	(1 + $this->formats[$i]['BitCount']) / $this->formats[$i]['BitCount'];
143	2	$this->formats[$i]['data'] = substr(
144		$data,
145	2	$this->formats[$i]['FileOffset'] +
146	2	($this->formats[$i]['ColorCount'] * 4) +
147	2	$this->formats[$i]['header']['Size'],
148		$length
149		);
150	2	break;
151	1	case 1:
152	1	$icodata = substr(
153		$data,
154	1	$this->formats[$i]['FileOffset'] + $icodata['Size'],
155	1	$this->formats[$i]['ColorCount'] * 4
156		);
157
158	1	$this->formats[$i]['colors'][] = [
159	1	'blue' => ord($icodata[0]),
160	1	'green' => ord($icodata[1]),
161	1	'red' => ord($icodata[2]),
162	1	'reserved' => ord($icodata[3]),
163		];
164	1	$this->formats[$i]['colors'][] = [
165	1	'blue' => ord($icodata[4]),
166	1	'green' => ord($icodata[5]),
167	1	'red' => ord($icodata[6]),
168	1	'reserved' => ord($icodata[7]),
169		];
170
171	1	$length = $this->formats[$i]['header']['Width'] * $this->formats[$i]['header']['Height'] / 8;
172	1	$this->formats[$i]['data'] = substr(
173		$data,
174	1	$this->formats[$i]['FileOffset'] + $this->formats[$i]['header']['Size'] + 8,
175		$length
176		);
177	1	break;
178		}
179	5	$this->formats[$i]['data_length'] = strlen($this->formats[$i]['data']);
180		}
181
182	5	return true;
183		}
184
185		/**
186		* Return the total icons extracted at the moment.
187		*
188		* @return int Total icons
189		*/
190	5	public function getTotalIcons()
191		{
192	5	return count($this->formats);
193		}
194
195		/**
196		* Return the icon header corresponding to that index.
197		*
198		* @param int $index Icon index
199		*
200		* @return resource\|bool Icon header or false
201		*/
202	5	public function getIconInfo($index)
203		{
204	5	if (isset($this->formats[$index])) {
205	5	return $this->formats[$index];
206		}
207
208	1	return false;
209		}
210
211		/**
212		* Changes background color of extraction. You can set
213		* the 3 color components or set $red = '#xxxxxx' (HTML format)
214		* and leave all other blanks.
215		*
216		* @param int $red Red component
217		* @param int $green Green component
218		* @param int $blue Blue component
219		*/
220	5	public function setBackground($red = 255, $green = 255, $blue = 255)
221		{
222	5	if (is_string($red) && preg_match('/^\#[0-9a-f]{6}$/', $red)) {
223	5	$green = hexdec($red[3] . $red[4]);
224	5	$blue = hexdec($red[5] . $red[6]);
225	5	$red = hexdec($red[1] . $red[2]);
226		}
227
228	5	$this->bgcolor = [$red, $green, $blue];
229	5	}
230
231		/**
232		* Set background color to be saved as transparent.
233		*
234		* @param bool $transparent Is Transparent or not
235		*
236		* @return bool Is Transparent or not
237		*/
238		public function setBackgroundTransparent($transparent = true)
239		{
240		return $this->bgcolorTransparent = $transparent;
241		}
242
243		/**
244		* Return an image resource with the icon stored
245		* on the $index position of the ICO file.
246		*
247		* @param int $index Position of the icon inside ICO
248		*
249		* @return resource\|bool Image resource
250		**/
251	5	public function getImage($index)
252		{
253	5	if (!isset($this->formats[$index])) {
254		return false;
255		}
256
257		// create image filled with desired background color
258	5	$im = imagecreatetruecolor($this->formats[$index]['Width'], $this->formats[$index]['Height']);
259	5	$bgcolor = $this->allocateColor($im, $this->bgcolor[0], $this->bgcolor[1], $this->bgcolor[2]);
260	5	imagefilledrectangle($im, 0, 0, $this->formats[$index]['Width'], $this->formats[$index]['Height'], $bgcolor);
261
262	5	if ($this->bgcolorTransparent) {
263		imagecolortransparent($im, $bgcolor);
264		}
265
266		//we may build a string of 1/0 to represent the XOR mask
267	5	$maskBits = '';
268		//we may build a palette for 8 bit images
269	5	$palette = [];
270
271		// allocate palette and get XOR image
272	5	if (in_array($this->formats[$index]['BitCount'], [1, 4, 8, 24])) {
273	4	if ($this->formats[$index]['BitCount'] != 24) {
274	3	$palette = [];
275	3	for ($i = 0; $i < $this->formats[$index]['ColorCount']; ++$i) {
276	3	$palette[$i] = $this->allocateColor(
277		$im,
278	3	$this->formats[$index]['colors'][$i]['red'],
279	3	$this->formats[$index]['colors'][$i]['green'],
280	3	$this->formats[$index]['colors'][$i]['blue'],
281	3	round($this->formats[$index]['colors'][$i]['reserved'] / 255 * 127)
282		);
283		}
284		}
285
286		// build XOR mask bits
287	4	$width = $this->formats[$index]['Width'];
288	4	if (($width % 32) > 0) {
289		$width += (32 - ($this->formats[$index]['Width'] % 32));
290		}
291	4	$offset = $this->formats[$index]['Width'] *
292	4	$this->formats[$index]['Height'] *
293	4	$this->formats[$index]['BitCount'] / 8;
294	4	$total_bytes = ($width * $this->formats[$index]['Height']) / 8;
295	4	$maskBits = '';
296	4	$bytes = 0;
297	4	$bytes_per_line = ($this->formats[$index]['Width'] / 8);
298	4	$bytes_to_remove = (($width - $this->formats[$index]['Width']) / 8);
299	4	for ($i = 0; $i < $total_bytes; ++$i) {
300	4	$maskBits .= str_pad(decbin(ord($this->formats[$index]['data'][$offset + $i])), 8, '0', STR_PAD_LEFT);
301	4	++$bytes;
302	4	if ($bytes == $bytes_per_line) {
303	4	$i += $bytes_to_remove;
304	4	$bytes = 0;
305		}
306		}
307		}
308
309		// now paint pixels based on bit count
310	5	switch ($this->formats[$index]['BitCount']) {
311	5	case 32:
312		/**
313		* 32 bits: 4 bytes per pixel [ B \| G \| R \| ALPHA ].
314		**/
315	1	$offset = 0;
316	1	for ($i = $this->formats[$index]['Height'] - 1; $i >= 0; --$i) {
317	1	for ($j = 0; $j < $this->formats[$index]['Width']; ++$j) {
318	1	$color = substr($this->formats[$index]['data'], $offset, 4);
319	1	if (ord($color[3]) > 0) {
320	1	$palette = $this->allocateColor(
321		$im,
322	1	ord($color[2]),
323	1	ord($color[1]),
324	1	ord($color[0]),
325	1	127 - round(ord($color[3]) / 255 * 127)
326		);
327	1	imagesetpixel($im, $j, $i, $palette);
328		}
329	1	$offset += 4;
330		}
331		}
332	1	break;
333	4	case 24:
334		/**
335		* 24 bits: 3 bytes per pixel [ B \| G \| R ].
336		**/
337	1	$offset = 0;
338	1	$bitoffset = 0;
339	1	for ($i = $this->formats[$index]['Height'] - 1; $i >= 0; --$i) {
340	1	for ($j = 0; $j < $this->formats[$index]['Width']; ++$j) {
341	1	if ($maskBits[$bitoffset] == 0) {
342	1	$color = substr($this->formats[$index]['data'], $offset, 3);
343	1	$palette = $this->allocateColor($im, ord($color[2]), ord($color[1]), ord($color[0]));
344	1	imagesetpixel($im, $j, $i, $palette);
345		}
346	1	$offset += 3;
347	1	++$bitoffset;
348		}
349		}
350	1	break;
351	3	case 8:
352		/**
353		* 8 bits: 1 byte per pixel [ COLOR INDEX ].
354		**/
355	1	$offset = 0;
356	1	for ($i = $this->formats[$index]['Height'] - 1; $i >= 0; --$i) {
357	1	for ($j = 0; $j < $this->formats[$index]['Width']; ++$j) {
358	1	if ($maskBits[$offset] == 0) {
359	1	$color = ord(substr($this->formats[$index]['data'], $offset, 1));
360	1	imagesetpixel($im, $j, $i, $palette[$color]);
361		}
362	1	++$offset;
363		}
364		}
365	1	break;
366	2	case 4:
367		/**
368		* 4 bits: half byte/nibble per pixel [ COLOR INDEX ].
369		**/
370	1	$offset = 0;
371	1	$maskoffset = 0;
372	1	for ($i = $this->formats[$index]['Height'] - 1; $i >= 0; --$i) {
373	1	for ($j = 0; $j < $this->formats[$index]['Width']; $j += 2) {
374	1	$colorByte = ord($this->formats[$index]['data'][$offset]);
375	1	$lowNibble = $colorByte & 0x0f;
376	1	$highNibble = ($colorByte & 0xf0) >> 4;
377
378	1	if ($maskBits[$maskoffset++] == 0) {
379	1	imagesetpixel($im, $j, $i, $palette[$highNibble]);
380		}
381
382	1	if ($maskBits[$maskoffset++] == 0) {
383	1	imagesetpixel($im, $j + 1, $i, $palette[$lowNibble]);
384		}
385	1	$offset++;
386		}
387		}
388	1	break;
389	1	case 1:
390		/**
391		* 1 bit: 1 bit per pixel (2 colors, usually black&white) [ COLOR INDEX ].
392		**/
393	1	$colorbits = '';
394	1	$total = strlen($this->formats[$index]['data']);
395	1	for ($i = 0; $i < $total; ++$i) {
396	1	$colorbits .= str_pad(decbin(ord($this->formats[$index]['data'][$i])), 8, '0', STR_PAD_LEFT);
397		}
398
399	1	$offset = 0;
400	1	for ($i = $this->formats[$index]['Height'] - 1; $i >= 0; --$i) {
401	1	for ($j = 0; $j < $this->formats[$index]['Width']; ++$j) {
402	1	if ($maskBits[$offset] == 0) {
403	1	imagesetpixel($im, $j, $i, $palette[$colorbits[$offset]]);
404		}
405	1	++$offset;
406		}
407		}
408	1	break;
409		}
410
411	5	return $im;
412		}
413
414		/**
415		* Allocate a color on $im resource. This function prevents
416		* from allocating same colors on the same pallete. Instead
417		* if it finds that the color is already allocated, it only
418		* returns the index to that color.
419		* It supports alpha channel.
420		*
421		* @param resource $im Image resource
422		* @param int $red Red component
423		* @param int $green Green component
424		* @param int $blue Blue component
425		* @param int $alpha Alpha channel
426		*
427		* @return int Color index
428		*/
429	5	private function allocateColor(&$im, $red, $green, $blue, $alpha = 0)
430		{
431	5	$c = imagecolorexactalpha($im, $red, $green, $blue, $alpha);
432	5	if ($c >= 0) {
433	5	return $c;
434		}
435
436		return imagecolorallocatealpha($im, $red, $green, $blue, $alpha);
437		}
438		}
439

lordelph / icofileloader

Branch — master (99fd1f)

Ico::loadFile() A

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