canvas_factory.cls.php
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<?php
/**
* DOMPDF - PHP5 HTML to PDF renderer
*
* File: $RCSfile: canvas_factory.cls.php,v $
* Created on: 2004-06-02
*
* Copyright (c) 2004 - Benj Carson <benjcarson@digitaljunkies.ca>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library in the file LICENSE.LGPL; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
* 02111-1307 USA
*
* Alternatively, you may distribute this software under the terms of the
* PHP License, version 3.0 or later. A copy of this license should have
* been distributed with this file in the file LICENSE.PHP . If this is not
* the case, you can obtain a copy at http://www.php.net/license/3_0.txt.
*
* The latest version of DOMPDF might be available at:
* http://www.dompdf.com/
*
* @link http://www.dompdf.com/
* @copyright 2004 Benj Carson
* @author Benj Carson <benjcarson@digitaljunkies.ca>
* @package dompdf
*/
/* $Id: canvas_factory.cls.php 216 2010-03-11 22:49:18Z ryan.masten $ */
/**
* Create canvas instances
*
* The canvas factory creates canvas instances based on the
* availability of rendering backends and config options.
*
* @package dompdf
*/
class Canvas_Factory {
/**
* Constructor is private: this is a static class
*/
private function __construct() { }
static function get_instance($paper = null, $orientation = null, $class = null) {
$backend = strtolower(DOMPDF_PDF_BACKEND);
if ( isset($class) && class_exists($class, false) )
$class .= "_Adapter";
else if ( (DOMPDF_PDF_BACKEND === "auto" || $backend === "pdflib" ) &&
class_exists("PDFLib", false) )
$class = "PDFLib_Adapter";
else if ( (DOMPDF_PDF_BACKEND === "auto" || $backend === "cpdf") )
$class = "CPDF_Adapter";
else if ( ( $backend === "tcpdf") )
$class = "TCPDF_Adapter";
else if ( $backend === "gd" )
$class = "GD_Adapter";
else
$class = "CPDF_Adapter";
return new $class($paper, $orientation);
}
}