[3019] | 1 | <?php |
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| 2 | /** |
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| 3 | * DOMPDF - PHP5 HTML to PDF renderer |
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| 4 | * |
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| 5 | * File: $RCSfile: renderer.cls.php,v $ |
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| 6 | * Created on: 2004-06-03 |
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| 7 | * |
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| 8 | * Copyright (c) 2004 - Benj Carson <benjcarson@digitaljunkies.ca> |
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| 9 | * |
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| 10 | * This library is free software; you can redistribute it and/or |
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| 11 | * modify it under the terms of the GNU Lesser General Public |
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| 12 | * License as published by the Free Software Foundation; either |
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| 13 | * version 2.1 of the License, or (at your option) any later version. |
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| 14 | * |
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| 15 | * This library is distributed in the hope that it will be useful, |
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| 16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 18 | * Lesser General Public License for more details. |
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| 19 | * |
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| 20 | * You should have received a copy of the GNU Lesser General Public License |
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| 21 | * along with this library in the file LICENSE.LGPL; if not, write to the |
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| 22 | * Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
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| 23 | * 02111-1307 USA |
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| 24 | * |
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| 25 | * Alternatively, you may distribute this software under the terms of the |
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| 26 | * PHP License, version 3.0 or later. A copy of this license should have |
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| 27 | * been distributed with this file in the file LICENSE.PHP . If this is not |
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| 28 | * the case, you can obtain a copy at http://www.php.net/license/3_0.txt. |
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| 29 | * |
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| 30 | * The latest version of DOMPDF might be available at: |
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| 31 | * http://www.digitaljunkies.ca/dompdf |
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| 32 | * |
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| 33 | * @link http://www.digitaljunkies.ca/dompdf |
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| 34 | * @copyright 2004 Benj Carson |
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| 35 | * @author Benj Carson <benjcarson@digitaljunkies.ca> |
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| 36 | * @package dompdf |
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| 37 | * @version 0.5.1 |
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| 38 | */ |
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| 39 | |
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| 40 | /* $Id: renderer.cls.php 186 2009-10-19 22:42:06Z eclecticgeek@gmail.com $ */ |
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| 41 | |
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| 42 | /** |
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| 43 | * Concrete renderer |
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| 44 | * |
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| 45 | * Instantiates several specific renderers in order to render any given |
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| 46 | * frame. |
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| 47 | * |
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| 48 | * @access private |
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| 49 | * @package dompdf |
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| 50 | */ |
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| 51 | class Renderer extends Abstract_Renderer { |
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| 52 | |
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| 53 | /** |
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| 54 | * Array of renderers for specific frame types |
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| 55 | * |
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| 56 | * @var array |
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| 57 | */ |
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| 58 | protected $_renderers; |
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| 59 | |
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| 60 | /** |
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| 61 | * Cache of the callbacks array |
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| 62 | * |
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| 63 | * @var array |
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| 64 | */ |
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| 65 | private $_callbacks; |
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| 66 | |
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| 67 | /** |
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| 68 | * Advance the canvas to the next page |
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| 69 | */ |
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| 70 | function new_page() { |
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| 71 | $this->_canvas->new_page(); |
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| 72 | } |
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| 73 | |
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| 74 | /** |
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| 75 | * Render frames recursively |
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| 76 | * |
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| 77 | * @param Frame $frame the frame to render |
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| 78 | */ |
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| 79 | function render(Frame $frame) { |
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| 80 | global $_dompdf_debug; |
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| 81 | |
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| 82 | if ( $_dompdf_debug ) { |
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| 83 | echo $frame; |
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| 84 | flush(); |
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| 85 | } |
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| 86 | |
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| 87 | $display = $frame->get_style()->display; |
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| 88 | |
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| 89 | switch ($display) { |
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| 90 | |
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| 91 | case "block": |
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| 92 | case "list-item": |
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| 93 | case "inline-block": |
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| 94 | case "table": |
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| 95 | case "table-row-group": |
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| 96 | case "table-header-group": |
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| 97 | case "table-footer-group": |
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| 98 | case "inline-table": |
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| 99 | $this->_render_frame("block", $frame); |
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| 100 | break; |
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| 101 | |
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| 102 | case "inline": |
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| 103 | if ( $frame->get_node()->nodeName == "#text" ) |
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| 104 | $this->_render_frame("text", $frame); |
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| 105 | else |
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| 106 | $this->_render_frame("inline", $frame); |
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| 107 | break; |
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| 108 | |
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| 109 | case "table-cell": |
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| 110 | $this->_render_frame("table-cell", $frame); |
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| 111 | break; |
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| 112 | |
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| 113 | case "-dompdf-list-bullet": |
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| 114 | $this->_render_frame("list-bullet", $frame); |
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| 115 | break; |
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| 116 | |
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| 117 | case "-dompdf-image": |
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| 118 | $this->_render_frame("image", $frame); |
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| 119 | break; |
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| 120 | |
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| 121 | case "none": |
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| 122 | $node = $frame->get_node(); |
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| 123 | |
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| 124 | if ( $node->nodeName == "script" && |
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| 125 | ( $node->getAttribute("type") == "text/php" || |
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| 126 | $node->getAttribute("language") == "php" ) ) { |
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| 127 | // Evaluate embedded php scripts |
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| 128 | $this->_render_frame("php", $frame); |
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| 129 | } |
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| 130 | |
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| 131 | // Don't render children, so skip to next iter |
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| 132 | return; |
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| 133 | |
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| 134 | default: |
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| 135 | break; |
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| 136 | |
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| 137 | } |
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| 138 | |
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| 139 | // Check for begin frame callback |
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| 140 | $this->_check_callbacks("begin_frame", $frame); |
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| 141 | |
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| 142 | foreach ($frame->get_children() as $child) |
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| 143 | $this->render($child); |
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| 144 | |
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| 145 | // Check for end frame callback |
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| 146 | $this->_check_callbacks("end_frame", $frame); |
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| 147 | |
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| 148 | } |
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| 149 | |
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| 150 | /** |
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| 151 | * Check for callbacks that need to be performed when a given event |
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| 152 | * gets triggered on a frame |
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| 153 | * |
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| 154 | * @param string $event the type of event |
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| 155 | * @param Frame $frame the frame that event is triggered on |
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| 156 | */ |
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| 157 | protected function _check_callbacks($event, $frame) { |
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| 158 | if (!isset($this->_callbacks)) { |
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| 159 | $this->_callbacks = $this->_dompdf->get_callbacks(); |
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| 160 | } |
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| 161 | |
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| 162 | if (is_array($this->_callbacks) && isset($this->_callbacks[$event])) { |
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| 163 | $info = array(0 => $this->_canvas, "canvas" => $this->_canvas, |
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| 164 | 1 => $frame, "frame" => $frame); |
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| 165 | $fs = $this->_callbacks[$event]; |
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| 166 | foreach ($fs as $f) { |
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| 167 | if (is_callable($f)) { |
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| 168 | if (is_array($f)) { |
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| 169 | $f[0]->$f[1]($info); |
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| 170 | } else { |
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| 171 | $f($info); |
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| 172 | } |
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| 173 | } |
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| 174 | } |
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| 175 | } |
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| 176 | } |
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| 177 | |
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| 178 | /** |
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| 179 | * Render a single frame |
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| 180 | * |
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| 181 | * Creates Renderer objects on demand |
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| 182 | * |
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| 183 | * @param string $type type of renderer to use |
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| 184 | * @param Frame $frame the frame to render |
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| 185 | */ |
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| 186 | protected function _render_frame($type, $frame) { |
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| 187 | |
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| 188 | if ( !isset($this->_renderers[$type]) ) { |
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| 189 | |
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| 190 | switch ($type) { |
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| 191 | case "block": |
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| 192 | $this->_renderers["block"] = new Block_Renderer($this->_dompdf); |
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| 193 | break; |
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| 194 | |
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| 195 | case "inline": |
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| 196 | $this->_renderers["inline"] = new Inline_Renderer($this->_dompdf); |
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| 197 | break; |
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| 198 | |
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| 199 | case "text": |
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| 200 | $this->_renderers["text"] = new Text_Renderer($this->_dompdf); |
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| 201 | break; |
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| 202 | |
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| 203 | case "image": |
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| 204 | $this->_renderers["image"] = new Image_Renderer($this->_dompdf); |
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| 205 | break; |
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| 206 | |
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| 207 | case "table-cell": |
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| 208 | $this->_renderers["table-cell"] = new Table_Cell_Renderer($this->_dompdf); |
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| 209 | break; |
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| 210 | |
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| 211 | case "list-bullet": |
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| 212 | $this->_renderers["list-bullet"] = new List_Bullet_Renderer($this->_dompdf); |
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| 213 | break; |
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| 214 | |
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| 215 | case "php": |
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| 216 | $this->_renderers["php"] = new PHP_Evaluator($this->_canvas); |
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| 217 | break; |
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| 218 | |
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| 219 | } |
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| 220 | } |
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| 221 | |
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| 222 | $this->_renderers[$type]->render($frame); |
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| 223 | |
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| 224 | } |
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| 225 | } |
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| 226 | |
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| 227 | ?> |
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