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   1  <?php
   2  /**
   3   * DOMPDF - PHP5 HTML to PDF renderer
   4   *
   5   * File: $RCSfile: renderer.cls.php,v $
   6   * Created on: 2004-06-03
   7   *
   8   * Copyright (c) 2004 - Benj Carson <benjcarson@digitaljunkies.ca>
   9   *
  10   * This library is free software; you can redistribute it and/or
  11   * modify it under the terms of the GNU Lesser General Public
  12   * License as published by the Free Software Foundation; either
  13   * version 2.1 of the License, or (at your option) any later version.
  14   *
  15   * This library is distributed in the hope that it will be useful,
  16   * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18   * Lesser General Public License for more details.
  19   *
  20   * You should have received a copy of the GNU Lesser General Public License
  21   * along with this library in the file LICENSE.LGPL; if not, write to the
  22   * Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  23   * 02111-1307 USA
  24   *
  25   * Alternatively, you may distribute this software under the terms of the
  26   * PHP License, version 3.0 or later.  A copy of this license should have
  27   * been distributed with this file in the file LICENSE.PHP .  If this is not
  28   * the case, you can obtain a copy at http://www.php.net/license/3_0.txt.
  29   *
  30   * The latest version of DOMPDF might be available at:
  31   * http://www.digitaljunkies.ca/dompdf
  32   *
  33   * @link http://www.digitaljunkies.ca/dompdf
  34   * @copyright 2004 Benj Carson
  35   * @author Benj Carson <benjcarson@digitaljunkies.ca>
  36   * @package dompdf
  37   * @version 0.3
  38   */
  39  
  40  /* $Id: renderer.cls.php,v 1.6 2006/04/06 19:30:46 benjcarson Exp $ */
  41  
  42  /**
  43   * Concrete renderer
  44   *
  45   * Instantiates several specific renderers in order to render any given
  46   * frame.
  47   *
  48   * @access private
  49   * @package dompdf
  50   */
  51  class Renderer extends Abstract_Renderer {
  52  
  53    /**
  54     * Array of renderers for specific frame types
  55     *
  56     * @var array
  57     */
  58    protected $_renderers;
  59      
  60    /**
  61     * Advance the canvas to the next page
  62     */  
  63    function new_page() {
  64      $this->_canvas->new_page();
  65    }
  66  
  67    /**
  68     * Render frames recursively
  69     *
  70     * @param Frame $frame the frame to render
  71     */
  72    function render(Frame $frame) {    
  73      global $_dompdf_debug;
  74  
  75      if ( $_dompdf_debug ) {
  76        echo $frame;
  77        flush();
  78      }                      
  79  
  80      $display = $frame->get_style()->display;
  81      
  82      switch ($display) {
  83        
  84      case "block":
  85      case "inline-block":
  86      case "table":
  87      case "table-row-group":
  88      case "table-header-group":
  89      case "table-footer-group":
  90      case "inline-table":
  91        $this->_render_frame("block", $frame);
  92        break;
  93  
  94      case "inline":
  95        if ( $frame->get_node()->nodeName == "#text" )
  96          $this->_render_frame("text", $frame);
  97        else
  98          $this->_render_frame("inline", $frame);
  99        break;
 100  
 101      case "table-cell":
 102        $this->_render_frame("table-cell", $frame);
 103        break;
 104  
 105      case "-dompdf-list-bullet":
 106        $this->_render_frame("list-bullet", $frame);
 107        break;
 108  
 109      case "-dompdf-image":
 110        $this->_render_frame("image", $frame);
 111        break;
 112        
 113      case "none":
 114        $node = $frame->get_node();
 115            
 116        if ( $node->nodeName == "script" &&
 117             ( $node->getAttribute("type") == "text/php" ||
 118               $node->getAttribute("language") == "php" ) ) {
 119          // Evaluate embedded php scripts
 120          $this->_render_frame("php", $frame);
 121        }
 122  
 123        // Don't render children, so skip to next iter
 124        return;
 125        
 126      default:
 127        break;
 128  
 129      }
 130  
 131      foreach ($frame->get_children() as $child)
 132        $this->render($child);
 133  
 134    }
 135  
 136    /**
 137     * Render a single frame
 138     *
 139     * Creates Renderer objects on demand
 140     *
 141     * @param string $type type of renderer to use
 142     * @param Frame $frame the frame to render
 143     */
 144    protected function _render_frame($type, $frame) {
 145  
 146      if ( !isset($this->_renderers[$type]) ) {
 147        
 148        switch ($type) {
 149        case "block":
 150          $this->_renderers["block"] = new Block_Renderer($this->_dompdf);
 151          break;
 152  
 153        case "inline":
 154          $this->_renderers["inline"] = new Inline_Renderer($this->_dompdf);
 155          break;
 156  
 157        case "text":
 158          $this->_renderers["text"] = new Text_Renderer($this->_dompdf);
 159          break;
 160  
 161        case "image":
 162          $this->_renderers["image"] = new Image_Renderer($this->_dompdf);
 163          break;
 164        
 165        case "table-cell":
 166          $this->_renderers["table-cell"] = new Table_Cell_Renderer($this->_dompdf);
 167          break;
 168  
 169        case "list-bullet":
 170          $this->_renderers["list-bullet"] = new List_Bullet_Renderer($this->_dompdf);
 171          break;
 172  
 173        case "php":
 174          $this->_renderers["php"] = new PHP_Evaluator($this->_canvas);
 175          break;
 176  
 177        }
 178      }
 179      
 180      $this->_renderers[$type]->render($frame);
 181  
 182    }
 183  }
 184  
 185  ?>