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<?php |
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declare(strict_types=1); |
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/** |
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* StreamObject class. |
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* |
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* @package YetiForcePDF\Objects\Basic |
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* |
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* @copyright YetiForce Sp. z o.o |
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* @license MIT |
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* @author Rafal Pospiech <[email protected]> |
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*/ |
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namespace YetiForcePDF\Objects\Basic; |
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/** |
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* Class StreamObject. |
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*/ |
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class StreamObject extends \YetiForcePDF\Objects\PdfObject |
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{ |
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/** |
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* Basic object type (integer, string, boolean, dictionary etc..). |
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* |
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* @var string |
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*/ |
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protected $basicType = 'Stream'; |
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/** |
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* Object name. |
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* |
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* @var string |
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*/ |
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protected $name = 'Stream'; |
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/** |
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* Content of the stream as string instructions. |
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* |
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* @var string[] |
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*/ |
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protected $content = []; |
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/** |
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* Filter used to decode stream. |
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* |
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* @var string|null |
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*/ |
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protected $filter; |
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/** |
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* Initialisation. |
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* |
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* @return $this |
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*/ |
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public function init() |
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{ |
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parent::init(); |
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$this->id = $this->document->getActualId(); |
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return $this; |
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} |
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/** |
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* Add raw content instructions as string. |
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* |
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* @param string $content |
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* @param string $filter |
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* |
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* @return \YetiForcePDF\Objects\Basic\StreamObject |
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*/ |
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public function addRawContent(string $content, string $filter = ''): self |
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{ |
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$this->content[] = $content; |
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if ($filter) { |
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$this->filter = $filter; |
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} |
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return $this; |
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} |
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/** |
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* Set filter. |
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* |
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* @param string $filter |
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* |
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* @return $this |
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*/ |
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public function setFilter(string $filter) |
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{ |
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$this->filter = $filter; |
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return $this; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function render(): string |
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{ |
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$stream = trim(implode("\n", $this->content), "\n"); |
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$sizeBefore = mb_strlen($stream, '8bit'); |
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if ('FlateDecode' === $this->filter) { |
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$stream = gzcompress($stream); |
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} |
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$filter = $this->filter ? '/Filter /' . $this->filter : ''; |
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return implode("\n", [ |
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$this->getRawId() . ' obj', |
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'<</Length ' . mb_strlen($stream, '8bit') . '/Lenght1 ' . $sizeBefore . $filter . '>>stream', |
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$stream, |
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'endstream', |
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'endobj', |
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]); |
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} |
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} |
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YetiForceCompany /
YetiForcePDF
