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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