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: image_frame_reflower.cls.php,v $ |
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6 | * Created on: 2004-08-08 |
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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 | * @contributor Helmut Tischer <htischer@weihenstephan.org> |
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37 | * @package dompdf |
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38 | * @version 0.5.1 |
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39 | * |
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40 | * Changes |
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41 | * @contributor Helmut Tischer <htischer@weihenstephan.org> |
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42 | * @version 0.5.1.htischer.20090507 |
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43 | * - Fix image size as percent of wrapping box |
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44 | * - Fix arithmetic rounding of image size |
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45 | * - Time consuming additional image file scan only when really needed |
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46 | */ |
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47 | |
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48 | /* $Id: image_frame_reflower.cls.php 186 2009-10-19 22:42:06Z eclecticgeek@gmail.com $ */ |
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49 | |
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50 | /** |
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51 | * Image reflower class |
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52 | * |
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53 | * @access private |
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54 | * @package dompdf |
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55 | */ |
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56 | class Image_Frame_Reflower extends Frame_Reflower { |
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57 | |
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58 | function __construct(Image_Frame_Decorator $frame) { |
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59 | parent::__construct($frame); |
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60 | } |
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61 | |
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62 | function reflow() { |
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63 | |
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64 | // Set the frame's width |
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65 | $this->get_min_max_width(); |
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66 | |
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67 | } |
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68 | |
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69 | function get_min_max_width() { |
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70 | |
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71 | if (DEBUGPNG) { |
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72 | // Determine the image's size. Time consuming. Only when really needed? |
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73 | list($img_width, $img_height) = getimagesize($this->_frame->get_image_url()); |
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74 | print "get_min_max_width() ". |
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75 | $this->_frame->get_style()->width.' '. |
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76 | $this->_frame->get_style()->height.';'. |
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77 | $this->_frame->get_parent()->get_style()->width." ". |
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78 | $this->_frame->get_parent()->get_style()->height.";". |
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79 | $this->_frame->get_parent()->get_parent()->get_style()->width.' '. |
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80 | $this->_frame->get_parent()->get_parent()->get_style()->height.';'. |
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81 | $img_width. ' '. |
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82 | $img_height.'|' ; |
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83 | } |
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84 | |
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85 | // We need to grab our *parent's* style because images are wrapped... |
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86 | $style = $this->_frame->get_parent()->get_style(); |
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87 | |
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88 | //own style auto or invalid value: use natural size in px |
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89 | //own style value: ignore suffix text including unit, use given number as px |
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90 | //own style %: walk up parent chain until found available space in pt; fill available space |
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91 | // |
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92 | //special ignored unit: e.g. 10ex: e treated as exponent; x ignored; 10e completely invalid ->like auto |
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93 | |
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94 | $width = $this->_frame->get_style()->width; |
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95 | if ( is_percent($width) ) { |
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96 | $t = 0.0; |
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97 | for ($f = $this->_frame->get_parent(); $f; $f = $f->get_parent()) { |
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98 | $t = (float)($f->get_style()->width); //always in pt |
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99 | if ((float)$t != 0) { |
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100 | break; |
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101 | } |
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102 | } |
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103 | $width = ((float)rtrim($width,"%") * $t)/100; //maybe 0 |
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104 | } else { |
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105 | // Don't set image original size if "%" branch was 0 or size not given. |
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106 | // Otherwise aspect changed on %/auto combination for width/height |
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107 | // Resample according to px per inch |
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108 | // See also List_Bullet_Image_Frame_Decorator::__construct |
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109 | $width = (float)($width * 72) / DOMPDF_DPI; |
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110 | } |
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111 | |
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112 | $height = $this->_frame->get_style()->height; |
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113 | if ( is_percent($height) ) { |
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114 | $t = 0.0; |
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115 | for ($f = $this->_frame->get_parent(); $f; $f = $f->get_parent()) { |
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116 | $t = (float)($f->get_style()->height); //always in pt |
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117 | if ((float)$t != 0) { |
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118 | break; |
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119 | } |
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120 | } |
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121 | $height = ((float)rtrim($height,"%") * $t)/100; //maybe 0 |
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122 | } else { |
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123 | // Don't set image original size if "%" branch was 0 or size not given. |
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124 | // Otherwise aspect changed on %/auto combination for width/height |
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125 | // Resample according to px per inch |
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126 | // See also List_Bullet_Image_Frame_Decorator::__construct |
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127 | $height = (float)($height * 72) / DOMPDF_DPI; |
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128 | } |
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129 | |
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130 | if ($width == 0 && $height == 0) { |
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131 | // Determine the image's size. Time consuming. Only when really needed! |
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132 | list($img_width, $img_height) = getimagesize($this->_frame->get_image_url()); |
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133 | // don't treat 0 as error. Can be downscaled or can be catched elsewhere if image not readable. |
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134 | // Resample according to px per inch |
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135 | // See also List_Bullet_Image_Frame_Decorator::__construct |
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136 | $width = (float)($img_width * 72) / DOMPDF_DPI; |
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137 | $height = (float)($img_height * 72) / DOMPDF_DPI; |
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138 | } else if ($height == 0) { |
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139 | list($img_width, $img_height) = getimagesize($this->_frame->get_image_url()); |
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140 | //On error don't divide by 0 |
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141 | if ($img_width == 0) { |
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142 | throw new DOMPDF_Exception('Image width not detected: '.$this->_frame->get_image_url()); |
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143 | } |
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144 | $height = ($width / $img_width) * $img_height; //keep aspect ratio |
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145 | } else if ($width == 0) { |
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146 | list($img_width, $img_height) = getimagesize($this->_frame->get_image_url()); |
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147 | if ($img_height == 0) { |
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148 | throw new DOMPDF_Exception('Image height not detected: '.$this->_frame->get_image_url()); |
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149 | } |
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150 | $width = ($height / $img_height) * $img_width; //keep aspect ratio |
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151 | } |
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152 | |
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153 | if (DEBUGPNG) print $width.' '.$height.';'; |
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154 | |
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155 | // Synchronize the styles |
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156 | $inner_style = $this->_frame->get_style(); |
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157 | $inner_style->width = $style->width = $width . "pt"; |
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158 | $inner_style->height = $style->height = $height . "pt"; |
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159 | |
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160 | $inner_style->padding_top = $style->padding_top; |
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161 | $inner_style->padding_right = $style->padding_right; |
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162 | $inner_style->padding_bottom = $style->padding_bottom; |
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163 | $inner_style->padding_left = $style->padding_left; |
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164 | |
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165 | $inner_style->border_top_width = $style->border_top_width; |
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166 | $inner_style->border_right_width = $style->border_right_width; |
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167 | $inner_style->border_bottom_width = $style->border_bottom_width; |
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168 | $inner_style->border_left_width = $style->border_left_width; |
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169 | |
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170 | $inner_style->border_top_style = $style->border_top_style; |
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171 | $inner_style->border_right_style = $style->border_right_style; |
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172 | $inner_style->border_bottom_style = $style->border_bottom_style; |
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173 | $inner_style->border_left_style = $style->border_left_style; |
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174 | |
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175 | $inner_style->margin_top = $style->margin_top; |
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176 | $inner_style->margin_right = $style->margin_right; |
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177 | $inner_style->margin_bottom = $style->margin_bottom; |
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178 | $inner_style->margin_left = $style->margin_left; |
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179 | |
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180 | return array( $width, $width, "min" => $width, "max" => $width); |
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181 | |
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182 | } |
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183 | } |
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184 | ?> |
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