Basic implementation event signup
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59
lib/dompdf/src/CanvasFactory.php
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59
lib/dompdf/src/CanvasFactory.php
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<?php
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/**
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* @package dompdf
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* @link http://dompdf.github.com/
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* @author Benj Carson <benjcarson@digitaljunkies.ca>
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* @license http://www.gnu.org/copyleft/lesser.html GNU Lesser General Public License
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*/
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namespace Dompdf;
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/**
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* Create canvas instances
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*
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* The canvas factory creates canvas instances based on the
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* availability of rendering backends and config options.
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*
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* @package dompdf
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*/
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class CanvasFactory
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{
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/**
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* Constructor is private: this is a static class
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*/
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private function __construct()
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{
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}
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/**
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* @param Dompdf $dompdf
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* @param string|array $paper
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* @param string $orientation
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* @param string $class
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*
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* @return Canvas
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*/
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static function get_instance(Dompdf $dompdf, $paper = null, $orientation = null, $class = null)
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{
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$backend = strtolower($dompdf->getOptions()->getPdfBackend());
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if (isset($class) && class_exists($class, false)) {
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$class .= "_Adapter";
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} else {
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if (($backend === "auto" || $backend === "pdflib") &&
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class_exists("PDFLib", false)
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) {
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$class = "Dompdf\\Adapter\\PDFLib";
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}
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else {
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if ($backend === "gd") {
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$class = "Dompdf\\Adapter\\GD";
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} else {
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$class = "Dompdf\\Adapter\\CPDF";
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}
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}
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}
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return new $class($paper, $orientation, $dompdf);
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}
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}
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