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/webroot/js/tiny_mce/plugins/images/connector/php/Image_Toolbox.class.php

https://bitbucket.org/fancymedia/cms
PHP | 1408 lines | 964 code | 93 blank | 351 comment | 199 complexity | b909a3322795e25c18b3eb461e73f0b4 MD5 | raw file
Possible License(s): LGPL-2.1

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  1. <?php

    2. 

  2. 

    3. 

  3. /**

    4. 

  4.  * Image_Toolbox.class.php -- PHP image manipulation class

    5. 

  5.  *

    6. 

  6.  * Copyright (C) 2003 Martin Theimer <pappkamerad@decoded.net>

    7. 

  7.  * 

    8. 

  8.  * This program is free software; you can redistribute it and/or modify

    9. 

  9.  * it under the terms of the GNU General Public License as published by

    10. 

  10.  * the Free Software Foundation; either version 2 of the License, or

    11. 

  11.  * (at your option) any later version.

    12. 

  12.  * This program is distributed in the hope that it will be useful,

    13. 

  13.  * but WITHOUT ANY WARRANTY; without even the implied warranty of

    14. 

  14.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

    15. 

  15.  * GNU General Public License <http://www.opensource.org/gpl-license.html>

    16. 

  16.  * for more details..

    17. 

  17.  *

    18. 

  18.  * The latest version of Image_Toolbox can be obtained from:

    19. 

  19.  * http://sourceforge.net/projects/image-toolbox

    20. 

  20.  * http://www.phpclasses.org/image_toolbox

    21. 

  21.  *

    22. 

  22.  * @author Martin Theimer <pappkamerad@decoded.net>

    23. 

  23.  * @copyright Copyright (C) 2003 Martin Theimer

    24. 

  24.  * @version 1.1.0

    25. 

  25.  * @package Image_Toolbox

    26. 

  26.  * @link http://sourceforge.net/projects/image-toolbox

    27. 

  27.  */

    28. 

  28. // $Id: Image_Toolbox.class.php,v 1.9 2003/12/05 19:34:01 pappkamerad Exp $

    29. 

  29. 

    30. 

  30. if (!defined('IMAGE_TOOLBOX_DEFAULT_JPEG_QUALITY')) {

    31. 

  31.     define('IMAGE_TOOLBOX_DEFAULT_JPEG_QUALITY', 75);

    32. 

  32. }

    33. 

  33. if (!defined('IMAGE_TOOLBOX_DEFAULT_8BIT_COLORS')) {

    34. 

  34.     define('IMAGE_TOOLBOX_DEFAULT_8BIT_COLORS', 256);

    35. 

  35. }

    36. 

  36. if (!defined('IMAGE_TOOLBOX_BIAS_HORIZONTAL')) {

    37. 

  37.     define('IMAGE_TOOLBOX_BIAS_HORIZONTAL', 1);

    38. 

  38. }

    39. 

  39. if (!defined('IMAGE_TOOLBOX_BIAS_VERTICAL')) {

    40. 

  40.     define('IMAGE_TOOLBOX_BIAS_VERTICAL', 0);

    41. 

  41. }

    42. 

  42. if (!defined('IMAGE_TOOLBOX_BLEND_COPY')) {

    43. 

  43.     define('IMAGE_TOOLBOX_BLEND_COPY', 1);

    44. 

  44. }

    45. 

  45. if (!defined('IMAGE_TOOLBOX_BLEND_MULTIPLY')) {

    46. 

  46.     define('IMAGE_TOOLBOX_BLEND_MULTIPLY', 2);

    47. 

  47. }

    48. 

  48. if (!defined('IMAGE_TOOLBOX_BLEND_SCREEN')) {

    49. 

  49.     define('IMAGE_TOOLBOX_BLEND_SCREEN', 3);

    50. 

  50. }

    51. 

  51. if (!defined('IMAGE_TOOLBOX_BLEND_DIFFERENCE')) {

    52. 

  52.     define('IMAGE_TOOLBOX_BLEND_DIFFERENCE', 4);

    53. 

  53. }

    54. 

  54. if (!defined('IMAGE_TOOLBOX_BLEND_NEGATION')) {

    55. 

  55.     define('IMAGE_TOOLBOX_BLEND_NEGATION', 5);

    56. 

  56. }

    57. 

  57. if (!defined('IMAGE_TOOLBOX_BLEND_EXCLUTION')) {

    58. 

  58.     define('IMAGE_TOOLBOX_BLEND_EXCLUSION', 6);

    59. 

  59. }

    60. 

  60. if (!defined('IMAGE_TOOLBOX_BLEND_OVERLAY')) {

    61. 

  61.     define('IMAGE_TOOLBOX_BLEND_OVERLAY', 7);

    62. 

  62. }

    63. 

  63. 

    64. 

  64. /**

    65. 

  65.  * PHP image manipulation class

    66. 

  66.  *

    67. 

  67.  * This class provides an easy to use library to the PHP GD-based imagefunctions

    68. 

  68.  *

    69. 

  69.  * @author Martin Theimer <pappkamerad@decoded.net>

    70. 

  70.  * @copyright 2003, Martin Theimer

    71. 

  71.  * @package Image_Toolbox

    72. 

  72.  * @link http://sourceforge.net/projects/image-toolbox

    73. 

  73.  * @version 1.1.0

    74. 

  74.  */

    75. 

  75. class Image_Toolbox {

    76. 

  76. 

    77. 

  77.     /**

    78. 

  78.      * The prefix for every error message

    79. 

  79.      * 

    80. 

  80.      * @access private

    81. 

  81.      * @var string

    82. 

  82.      */

    83. 

  83.     var $_error_prefix = 'Image: ';

    84. 

  84. 

    85. 

  85.     /**

    86. 

  86.      * Defines imagetypes and how they are supported by the server

    87. 

  87.      * 

    88. 

  88.      * @access private

    89. 

  89.      * @var array

    90. 

  90.      */

    91. 

  91.     var $_types = array(

    92. 

  92.         1 => array(

    93. 

  93.             'ext' => 'gif',

    94. 

  94.             'mime' => 'image/gif',

    95. 

  95.             'supported' => 0

    96. 

  96.         ),

    97. 

  97.         2 => array(

    98. 

  98.             'ext' => 'jpg',

    99. 

  99.             'mime' => 'image/jpeg',

    100. 

  100.             'supported' => 0

    101. 

  101.         ),

    102. 

  102.         3 => array(

    103. 

  103.             'ext' => 'png',

    104. 

  104.             'mime' => 'image/png',

    105. 

  105.             'supported' => 0

    106. 

  106.         )

    107. 

  107.     );

    108. 

  108. 

    109. 

  109.     /**

    110. 

  110.      * Which PHP image resize function to be used

    111. 

  111.      * imagecopyresampled only supported with GD >= 2.0

    112. 

  112.      * 

    113. 

  113.      * @access private

    114. 

  114.      * @var string

    115. 

  115.      */

    116. 

  116.     var $_resize_function = 'imagecopyresampled';

    117. 

  117. 

    118. 

  118.     /**

    119. 

  119.      * Stores all image resource data

    120. 

  120.      * 

    121. 

  121.      * @access private

    122. 

  122.      * @var array

    123. 

  123.      */

    124. 

  124.     var $_img = array(

    125. 

  125.         'main' => array(

    126. 

  126.             'resource' => 0,

    127. 

  127.             'width' => 0,

    128. 

  128.             'height' => 0,

    129. 

  129.             'bias' => 0,

    130. 

  130.             'aspectratio' => 0,

    131. 

  131.             'type' => 0,

    132. 

  132.             'output_type' => 0,

    133. 

  133.             'indexedcolors' => 0,

    134. 

  134.             'color' => -1

    135. 

  135.         )

    136. 

  136.     );

    137. 

  137. 

    138. 

  138.     /**

    139. 

  139.      * Which PHP image create function to be used

    140. 

  140.      * imagecreatetruecolor only supported with GD >= 2.0

    141. 

  141.      * 

    142. 

  142.      * @access private

    143. 

  143.      * @var string

    144. 

  144.      */

    145. 

  145.     var $_imagecreatefunction = '';

    146. 

  146. 

    147. 

  147.     /**

    148. 

  148.      * The class constructor.

    149. 

  149.      *

    150. 

  150.      * Determines the image features of the server and sets the according values.<br>

    151. 

  151.      * Additionally you can specify a image to be created/loaded. like {@link addImage() addImage}.

    152. 

  152.      * 

    153. 

  153.      * If no parameter is given, no image resource will be generated<br>

    154. 

  154.      * Or:<br>

    155. 

  155.      * <i>string</i> <b>$file</b> imagefile to load<br>

    156. 

  156.      * Or:<br>

    157. 

  157.      * <i>integer</i> <b>$width</b> imagewidth of new image to be created<br>

    158. 

  158.      * <i>integer</i> <b>$height</b> imageheight of new image to be created<br>

    159. 

  159.      * <i>string</i> <b>$fillcolor</b> optional fill the new image with this color (hexformat, e.g. '#FF0000')<br>

    160. 

  160.      */

    161. 

  161.     function Image_Toolbox() {

    162. 

  162.         $args = func_get_args();

    163. 

  163.         $argc = func_num_args();

    164. 

  164. 

    165. 

  165.         //get GD information. see what types we can handle

    166. 

  166.         $gd_info = function_exists('gd_info') ? gd_info() : $this->_gd_info();

    167. 

  167.         preg_match("/\A[\D]*([\d+\.]*)[\D]*\Z/", $gd_info['GD Version'], $matches);

    168. 

  168.         list($this->_gd_version_string, $this->_gd_version_number) = $matches;

    169. 

  169.         $this->_gd_version = substr($this->_gd_version_number, 0, strpos($this->_gd_version_number, '.'));

    170. 

  170.         if ($this->_gd_version >= 2) {

    171. 

  171.             $this->_imagecreatefunction = 'imagecreatetruecolor';

    172. 

  172.             $this->_resize_function = 'imagecopyresampled';

    173. 

  173.         } else {

    174. 

  174.             $this->_imagecreatefunction = 'imagecreate';

    175. 

  175.             $this->_resize_function = 'imagecopyresized';

    176. 

  176.         }

    177. 

  177. 

    178. 

  178.         $this->_gd_ttf = $gd_info['FreeType Support'];

    179. 

  179.         $this->_gd_ps = $gd_info['T1Lib Support'];

    180. 

  180.         if ($gd_info['GIF Read Support']) {

    181. 

  181.             $this->_types[1]['supported'] = 1;

    182. 

  182.             if ($gd_info['GIF Create Support']) {

    183. 

  183.                 $this->_types[1]['supported'] = 2;

    184. 

  184.             }

    185. 

  185.         }

    186. 

  186. 

    187. 

  187.         if ((isset($gd_info['JPG Support']) && $gd_info['JPG Support']) || (isset($gd_info['JPEG Support']) && $gd_info['JPEG Support'])) {

    188. 

  188.             $this->_types[2]['supported'] = 2;

    189. 

  189.         }

    190. 

  190.         if ($gd_info['PNG Support']) {

    191. 

  191.             $this->_types[3]['supported'] = 2;

    192. 

  192.         }

    193. 

  193. 

    194. 

  194.         //load or create main image

    195. 

  195.         if ($argc == 0) {

    196. 

  196.             return true;

    197. 

  197.         } else {

    198. 

  198.             if ($this->_addImage($argc, $args)) {

    199. 

  199.                 foreach ($this->_img['operator'] as $key => $value) {

    200. 

  200.                     $this->_img['main'][$key] = $value;

    201. 

  201.                 }

    202. 

  202.                 $this->_img['main']['output_type'] = $this->_img['main']['type'];

    203. 

  203.                 unset($this->_img['operator']);

    204. 

  204.                 return true;

    205. 

  205.             } else {

    206. 

  206.                 trigger_error($this->_error_prefix . 'No appropriate constructor found.', E_USER_ERROR);

    207. 

  207.                 return null;

    208. 

  208.             }

    209. 

  209.         }

    210. 

  210.     }

    211. 

  211. 

    212. 

  212.     /**

    213. 

  213.      * Returns an assocative array with information about the image features of this server

    214. 

  214.      *

    215. 

  215.      * Array values:

    216. 

  216.      * <ul>

    217. 

  217.      * <li>'gd_version' -> what GD version is installed on this server (e.g. 2.0)</li>

    218. 

  218.      * <li>'gif' -> 0 = not supported, 1 = reading is supported, 2 = creating is supported</li>

    219. 

  219.      * <li>'jpg' -> 0 = not supported, 1 = reading is supported, 2 = creating is supported</li>

    220. 

  220.      * <li>'png' -> 0 = not supported, 1 = reading is supported, 2 = creating is supported</li>

    221. 

  221.      * <li>'ttf' -> TTF text creation. true = supported, false = not supported

    222. 

  222.      * </ul>

    223. 

  223.      *

    224. 

  224.      * @return array

    225. 

  225.      */

    226. 

  226.     function getServerFeatures() {

    227. 

  227.         $features = array();

    228. 

  228.         $features['gd_version'] = $this->_gd_version_number;

    229. 

  229.         $features['gif'] = $this->_types[1]['supported'];

    230. 

  230.         $features['jpg'] = $this->_types[2]['supported'];

    231. 

  231.         $features['png'] = $this->_types[3]['supported'];

    232. 

  232.         $features['ttf'] = $this->_gd_ttf;

    233. 

  233.         return $features;

    234. 

  234.     }

    235. 

  235. 

    236. 

  236.     /**

    237. 

  237.      * Flush all image resources and init a new one

    238. 

  238.      *

    239. 

  239.      * Parameter:<br>

    240. 

  240.      * <i>string</i> <b>$file</b> imagefile to load<br>

    241. 

  241.      * Or:<br>

    242. 

  242.      * <i>integer</i> <b>$width</b> imagewidth of new image to be created<br>

    243. 

  243.      * <i>integer</i> <b>$height</b> imageheight of new image to be created<br>

    244. 

  244.      * <i>string</i> <b>$fillcolor</b> optional fill the new image with this color (hexformat, e.g. '#FF0000')<br>

    245. 

  245.      */

    246. 

  246.     function newImage() {

    247. 

  247.         $args = func_get_args();

    248. 

  248.         $argc = func_num_args();

    249. 

  249. 

    250. 

  250.         if ($this->_addImage($argc, $args)) {

    251. 

  251.             foreach ($this->_img['operator'] as $key => $value) {

    252. 

  252.                 $this->_img['main'][$key] = $value;

    253. 

  253.             }

    254. 

  254.             $this->_img['main']['output_type'] = $this->_img['main']['type'];

    255. 

  255.             unset($this->_img['operator']);

    256. 

  256.             return true;

    257. 

  257.         } else {

    258. 

  258.             trigger_error($this->_error_prefix . 'No appropriate constructor found.', E_USER_ERROR);

    259. 

  259.             return null;

    260. 

  260.         }

    261. 

  261.     }

    262. 

  262. 

    263. 

  263.     /**

    264. 

  264.      * Reimplements the original PHP {@link gd_info()} function for older PHP versions

    265. 

  265.      * 

    266. 

  266.      * @access private

    267. 

  267.      * @return array associative array with info about the GD library of the server

    268. 

  268.      */

    269. 

  269.     function _gd_info() {

    270. 

  270.         $array = array(

    271. 

  271.             "GD Version" => "",

    272. 

  272.             "FreeType Support" => false,

    273. 

  273.             "FreeType Linkage" => "",

    274. 

  274.             "T1Lib Support" => false,

    275. 

  275.             "GIF Read Support" => false,

    276. 

  276.             "GIF Create Support" => false,

    277. 

  277.             "JPG Support" => false,

    278. 

  278.             "PNG Support" => false,

    279. 

  279.             "WBMP Support" => false,

    280. 

  280.             "XBM Support" => false

    281. 

  281.         );

    282. 

  282. 

    283. 

  283.         $gif_support = 0;

    284. 

  284.         ob_start();

    285. 

  285.         eval("phpinfo();");

    286. 

  286.         $info = ob_get_contents();

    287. 

  287.         ob_end_clean();

    288. 

  288. 

    289. 

  289.         foreach (explode("\n", $info) as $line) {

    290. 

  290.             if (strpos($line, "GD Version") !== false)

    291. 

  291.                 $array["GD Version"] = trim(str_replace("GD Version", "", strip_tags($line)));

    292. 

  292.             if (strpos($line, "FreeType Support") !== false)

    293. 

  293.                 $array["FreeType Support"] = trim(str_replace("FreeType Support", "", strip_tags($line)));

    294. 

  294.             if (strpos($line, "FreeType Linkage") !== false)

    295. 

  295.                 $array["FreeType Linkage"] = trim(str_replace("FreeType Linkage", "", strip_tags($line)));

    296. 

  296.             if (strpos($line, "T1Lib Support") !== false)

    297. 

  297.                 $array["T1Lib Support"] = trim(str_replace("T1Lib Support", "", strip_tags($line)));

    298. 

  298.             if (strpos($line, "GIF Read Support") !== false)

    299. 

  299.                 $array["GIF Read Support"] = trim(str_replace("GIF Read Support", "", strip_tags($line)));

    300. 

  300.             if (strpos($line, "GIF Create Support") !== false)

    301. 

  301.                 $array["GIF Create Support"] = trim(str_replace("GIF Create Support", "", strip_tags($line)));

    302. 

  302.             if (strpos($line, "GIF Support") !== false)

    303. 

  303.                 $gif_support = trim(str_replace("GIF Support", "", strip_tags($line)));

    304. 

  304.             if (strpos($line, "JPG Support") !== false)

    305. 

  305.                 $array["JPG Support"] = trim(str_replace("JPG Support", "", strip_tags($line)));

    306. 

  306.             if (strpos($line, "PNG Support") !== false)

    307. 

  307.                 $array["PNG Support"] = trim(str_replace("PNG Support", "", strip_tags($line)));

    308. 

  308.             if (strpos($line, "WBMP Support") !== false)

    309. 

  309.                 $array["WBMP Support"] = trim(str_replace("WBMP Support", "", strip_tags($line)));

    310. 

  310.             if (strpos($line, "XBM Support") !== false)

    311. 

  311.                 $array["XBM Support"] = trim(str_replace("XBM Support", "", strip_tags($line)));

    312. 

  312.         }

    313. 

  313. 

    314. 

  314.         if ($gif_support === "enabled") {

    315. 

  315.             $array["GIF Read Support"] = true;

    316. 

  316.             $array["GIF Create Support"] = true;

    317. 

  317.         }

    318. 

  318. 

    319. 

  319.         if ($array["FreeType Support"] === "enabled") {

    320. 

  320.             $array["FreeType Support"] = true;

    321. 

  321.         }

    322. 

  322. 

    323. 

  323.         if ($array["T1Lib Support"] === "enabled") {

    324. 

  324.             $array["T1Lib Support"] = true;

    325. 

  325.         }

    326. 

  326. 

    327. 

  327.         if ($array["GIF Read Support"] === "enabled") {

    328. 

  328.             $array["GIF Read Support"] = true;

    329. 

  329.         }

    330. 

  330. 

    331. 

  331.         if ($array["GIF Create Support"] === "enabled") {

    332. 

  332.             $array["GIF Create Support"] = true;

    333. 

  333.         }

    334. 

  334. 

    335. 

  335.         if ($array["JPG Support"] === "enabled") {

    336. 

  336.             $array["JPG Support"] = true;

    337. 

  337.         }

    338. 

  338. 

    339. 

  339.         if ($array["PNG Support"] === "enabled") {

    340. 

  340.             $array["PNG Support"] = true;

    341. 

  341.         }

    342. 

  342. 

    343. 

  343.         if ($array["WBMP Support"] === "enabled") {

    344. 

  344.             $array["WBMP Support"] = true;

    345. 

  345.         }

    346. 

  346. 

    347. 

  347.         if ($array["XBM Support"] === "enabled") {

    348. 

  348.             $array["XBM Support"] = true;

    349. 

  349.         }

    350. 

  350. 

    351. 

  351.         return $array;

    352. 

  352.     }

    353. 

  353. 

    354. 

  354.     /**

    355. 

  355.      * Convert a color defined in hexvalues to the PHP color format

    356. 

  356.      * 

    357. 

  357.      * @access private

    358. 

  358.      * @param string $hex color value in hexformat (e.g. '#FF0000')

    359. 

  359.      * @return integer color value in PHP format

    360. 

  360.      */

    361. 

  361.     function _hexToPHPColor($hex) {

    362. 

  362.         $length = strlen($hex);

    363. 

  363.         $dr = hexdec(substr($hex, $length - 6, 2));

    364. 

  364.         $dg = hexdec(substr($hex, $length - 4, 2));

    365. 

  365.         $db = hexdec(substr($hex, $length - 2, 2));

    366. 

  366.         $color = ($dr << 16) + ($dg << 8) + $db;

    367. 

  367.         return $color;

    368. 

  368.     }

    369. 

  369. 

    370. 

  370.     /**

    371. 

  371.      * Convert a color defined in hexvalues to corresponding dezimal values

    372. 

  372.      * 

    373. 

  373.      * @access private

    374. 

  374.      * @param string $hex color value in hexformat (e.g. '#FF0000')

    375. 

  375.      * @return array associative array with color values in dezimal format (fields: 'red', 'green', 'blue')

    376. 

  376.      */

    377. 

  377.     function _hexToDecColor($hex) {

    378. 

  378.         $length = strlen($hex);

    379. 

  379.         $color['red'] = hexdec(substr($hex, $length - 6, 2));

    380. 

  380.         $color['green'] = hexdec(substr($hex, $length - 4, 2));

    381. 

  381.         $color['blue'] = hexdec(substr($hex, $length - 2, 2));

    382. 

  382.         return $color;

    383. 

  383.     }

    384. 

  384. 

    385. 

  385.     /**

    386. 

  386.      * Generate a new image resource based on the given parameters

    387. 

  387.      *

    388. 

  388.      * Parameter:

    389. 

  389.      * <i>string</i> <b>$file</b> imagefile to load<br>

    390. 

  390.      * Or:<br>

    391. 

  391.      * <i>integer</i> <b>$width</b> imagewidth of new image to be created<br>

    392. 

  392.      * <i>integer</i> <b>$height</b> imageheight of new image to be created<br>

    393. 

  393.      * <i>string</i> <b>$fillcolor</b> optional fill the new image with this color (hexformat, e.g. '#FF0000')<br>

    394. 

  394.      *

    395. 

  395.      * @access private

    396. 

  396.      */

    397. 

  397.     function _addImage($argc, $args) {

    398. 

  398.         if (($argc == 2 || $argc == 3) && is_int($args[0]) && is_int($args[1]) && (is_string($args[2]) || !isset($args[2]))) {

    399. 

  399.             //neues leeres bild mit width und height (fillcolor optional)

    400. 

  400.             $this->_img['operator']['width'] = $args[0];

    401. 

  401.             $this->_img['operator']['height'] = $args[1];

    402. 

  402.             ($this->_img['operator']['width'] >= $this->_img['operator']['height']) ? ($this->_img['operator']['bias'] = IMAGE_TOOLBOX_BIAS_HORIZONTAL) : ($this->_img['operator']['bias'] = IMAGE_TOOLBOX_BIAS_VERTICAL);

    403. 

  403.             $this->_img['operator']['aspectratio'] = $this->_img['operator']['width'] / $this->_img['operator']['height'];

    404. 

  404.             $this->_img['operator']['indexedcolors'] = 0;

    405. 

  405.             $functionname = $this->_imagecreatefunction;

    406. 

  406.             $this->_img['operator']['resource'] = $functionname($this->_img['operator']['width'], $this->_img['operator']['height']);

    407. 

  407.             // set default type jpg.

    408. 

  408.             $this->_img['operator']['type'] = 2;

    409. 

  409.             if (isset($args[2]) && is_string($args[2])) {

    410. 

  410.                 //neues bild mit farbe f�llen

    411. 

  411.                 $fillcolor = $this->_hexToPHPColor($args[2]);

    412. 

  412.                 imagefill($this->_img['operator']['resource'], 0, 0, $fillcolor);

    413. 

  413.                 $this->_img['operator']['color'] = $fillcolor;

    414. 

  414.             } else {

    415. 

  415.                 $this->_img['operator']['color'] = 0;

    416. 

  416.             }

    417. 

  417.         } elseif ($argc == 1 && is_string($args[0])) {

    418. 

  418.             //bild aus datei laden. width und height original gr�sse

    419. 

  419.             $this->_img['operator'] = $this->_loadFile($args[0]);

    420. 

  420.             $this->_img['operator']['indexedcolors'] = imagecolorstotal($this->_img['operator']['resource']);

    421. 

  421.             $this->_img['operator']['color'] = -1;

    422. 

  422.         } else {

    423. 

  423.             return false;

    424. 

  424.         }

    425. 

  425.         return true;

    426. 

  426.     }

    427. 

  427. 

    428. 

  428.     /**

    429. 

  429.      * Loads a image file

    430. 

  430.      *

    431. 

  431.      * @access private

    432. 

  432.      * @param string $filename imagefile to load

    433. 

  433.      * @return array associative array with the loaded filedata

    434. 

  434.      */

    435. 

  435.     function _loadFile($filename) {

    436. 

  436.         if (file_exists($filename)) {

    437. 

  437.             $info = getimagesize($filename);

    438. 

  438. 

    439. 

  439.             if (!$info) {

    440. 

  440.                 trigger_error($this->_error_prefix . 'Not an image (' . $filename . ').', E_USER_ERROR);

    441. 

  441.                 return null;

    442. 

  442.             }

    443. 

  443. 

    444. 

  444.             $filedata['width'] = $info[0];

    445. 

  445.             $filedata['height'] = $info[1];

    446. 

  446.             ($filedata['width'] >= $filedata['height']) ? ($filedata['bias'] = IMAGE_TOOLBOX_BIAS_HORIZONTAL) : ($filedata['bias'] = IMAGE_TOOLBOX_BIAS_VERTICAL);

    447. 

  447.             $filedata['aspectratio'] = $filedata['width'] / $filedata['height'];

    448. 

  448.             $filedata['type'] = $info[2];

    449. 

  449. 

    450. 

  450.             if ($this->_types[$filedata['type']]['supported'] < 1) {

    451. 

  451.                 trigger_error($this->_error_prefix . 'Imagetype (' . $this->_types[$filedata['type']]['ext'] . ') not supported for reading.', E_USER_ERROR);

    452. 

  452.                 return null;

    453. 

  453.             }

    454. 

  454.             switch ($filedata['type']) {

    455. 

  455.                 case 1:

    456. 

  456.                     $dummy = imagecreatefromgif($filename);

    457. 

  457.                     $functionname = $this->_imagecreatefunction;

    458. 

  458.                     $filedata['resource'] = $functionname($filedata['width'], $filedata['height']);

    459. 

  459.                     imagecopy($filedata['resource'], $dummy, 0, 0, 0, 0, $filedata['width'], $filedata['height']);

    460. 

  460.                     imagedestroy($dummy);

    461. 

  461.                     break;

    462. 

  462. 

    463. 

  463.                 case 2:

    464. 

  464.                     $filedata['resource'] = imagecreatefromjpeg($filename);

    465. 

  465.                     break;

    466. 

  466. 

    467. 

  467.                 case 3:

    468. 

  468.                     $dummy = imagecreatefrompng($filename);

    469. 

  469.                     if (imagecolorstotal($dummy) != 0) {

    470. 

  470.                         $functionname = $this->_imagecreatefunction;

    471. 

  471.                         $filedata['resource'] = $functionname($filedata['width'], $filedata['height']);

    472. 

  472.                         imagecopy($filedata['resource'], $dummy, 0, 0, 0, 0, $filedata['width'], $filedata['height']);

    473. 

  473.                     } else {

    474. 

  474.                         $filedata['resource'] = $dummy;

    475. 

  475.                     }

    476. 

  476.                     unset($dummy);

    477. 

  477.                     break;

    478. 

  478. 

    479. 

  479.                 default:

    480. 

  480.                     trigger_error($this->_error_prefix . 'Imagetype not supported.', E_USER_ERROR);

    481. 

  481.                     return null;

    482. 

  482.             }

    483. 

  483.             return $filedata;

    484. 

  484.         } else {

    485. 

  485.             trigger_error($this->_error_prefix . 'Imagefile (' . $filename . ') does not exist.', E_USER_ERROR);

    486. 

  486.             return null;

    487. 

  487.         }

    488. 

  488.     }

    489. 

  489. 

    490. 

  490.     /**

    491. 

  491.      * Output a image to the browser

    492. 

  492.      *

    493. 

  493.      * $output_type can be one of the following:<br>

    494. 

  494.      * <ul>

    495. 

  495.      * <li>'gif' -> gif image (if supported) (8-bit indexed colors)</li>

    496. 

  496.      * <li>'png' -> png image (if supported) (truecolor)</li>

    497. 

  497.      * <li>'png8' -> png image (if supported) (8-bit indexed colors)</li>

    498. 

  498.      * <li>'jpg' -> jpeg image (if supported) (truecolor)</li>

    499. 

  499.      * </ul>

    500. 

  500.      * (default: same as original)

    501. 

  501.      *

    502. 

  502.      * $dither:<br>

    503. 

  503.      * If this is true than dither is used on the conversion from truecolor to 8-bit indexed imageformats (png8, gif)<br>

    504. 

  504.      * (default = false)

    505. 

  505.      *

    506. 

  506.      * @param string|integer $output_type type of outputted image

    507. 

  507.      * @param integer $output_quality jpeg quality of outputted image (default: IMAGE_TOOLBOX_DEFAULT_JPEG_QUALITY)

    508. 

  508.      * @param bool $dither use dither

    509. 

  509.      * @return bool true on success, otherwise false

    510. 

  510.      */

    511. 

  511.     function output($output_type = false, $output_quality = false, $dither = false) {

    512. 

  512.         if ($output_type === false) {

    513. 

  513.             $output_type = $this->_img['main']['output_type'];

    514. 

  514.         }

    515. 

  515.         switch ($output_type) {

    516. 

  516.             case 1:

    517. 

  517.             case 'gif':

    518. 

  518.             case 'GIF':

    519. 

  519.                 if ($this->_types[1]['supported'] < 2) {

    520. 

  520.                     trigger_error($this->_error_prefix . 'Imagetype (' . $this->_types[$output_type]['ext'] . ') not supported for creating/writing.', E_USER_ERROR);

    521. 

  521.                     return null;

    522. 

  522.                 }

    523. 

  523.                 header('Content-type: ' . $this->_types[$output_type]['mime']);

    524. 

  524.                 if ($this->_gd_version >= 2) {

    525. 

  525.                     if ($this->_img['main']['indexedcolors'] == 0) {

    526. 

  526.                         $dummy = imagecreatetruecolor($this->_img['main']['width'], $this->_img['main']['height']);

    527. 

  527.                         imagecopy($dummy, $this->_img['main']['resource'], 0, 0, 0, 0, $this->_img['main']['width'], $this->_img['main']['height']);

    528. 

  528.                         if ($output_quality === false) {

    529. 

  529.                             $output_quality = IMAGE_TOOLBOX_DEFAULT_8BIT_COLORS;

    530. 

  530.                         }

    531. 

  531.                         imagetruecolortopalette($dummy, $dither, $output_quality);

    532. 

  532.                     }

    533. 

  533.                     imagegif($dummy);

    534. 

  534.                     imagedestroy($dummy);

    535. 

  535.                 } else {

    536. 

  536.                     imagegif($this->_img['main']['resource']);

    537. 

  537.                 }

    538. 

  538.                 break;

    539. 

  539. 

    540. 

  540.             case 2:

    541. 

  541.             case '2':

    542. 

  542.             case 'jpg':

    543. 

  543.             case 'jpeg':

    544. 

  544.             case 'JPG':

    545. 

  545.             case 'JPEG':

    546. 

  546.                 if ($this->_types[2]['supported'] < 2) {

    547. 

  547.                     trigger_error($this->_error_prefix . 'Imagetype (' . $this->_types[$output_type]['ext'] . ') not supported for creating/writing.', E_USER_ERROR);

    548. 

  548.                     return null;

    549. 

  549.                 }

    550. 

  550.                 header('Content-type: ' . $this->_types[$output_type]['mime']);

    551. 

  551.                 if ($output_quality === false) {

    552. 

  552.                     $output_quality = IMAGE_TOOLBOX_DEFAULT_JPEG_QUALITY;

    553. 

  553.                 }

    554. 

  554.                 imagejpeg($this->_img['main']['resource'], '', $output_quality);

    555. 

  555.                 break;

    556. 

  556. 

    557. 

  557.             case 3:

    558. 

  558.             case '3':

    559. 

  559.             case 'png':

    560. 

  560.             case 'PNG':

    561. 

  561.             case 'png24':

    562. 

  562.             case 'PNG24':

    563. 

  563.                 if ($this->_types[3]['supported'] < 2) {

    564. 

  564.                     trigger_error($this->_error_prefix . 'Imagetype (' . $this->_types[$output_type]['ext'] . ') not supported for creating/writing.', E_USER_ERROR);

    565. 

  565.                     return null;

    566. 

  566.                 }

    567. 

  567.                 header('Content-type: ' . $this->_types[$output_type]['mime']);

    568. 

  568.                 imagepng($this->_img['main']['resource']);

    569. 

  569.                 break;

    570. 

  570. 

    571. 

  571.             case 4:

    572. 

  572.             case '4':

    573. 

  573.             case 'png8':

    574. 

  574.             case 'PNG8':

    575. 

  575.                 if ($this->_types[3]['supported'] < 2) {

    576. 

  576.                     trigger_error($this->_error_prefix . 'Imagetype (' . $this->_types[$output_type]['ext'] . ') not supported for creating/writing.', E_USER_ERROR);

    577. 

  577.                     return null;

    578. 

  578.                 }

    579. 

  579.                 header('Content-type: ' . $this->_types[$output_type]['mime']);

    580. 

  580.                 if ($this->_gd_version >= 2) {

    581. 

  581.                     if ($this->_img['main']['indexedcolors'] == 0) {

    582. 

  582.                         $dummy = imagecreatetruecolor($this->_img['main']['width'], $this->_img['main']['height']);

    583. 

  583.                         imagecopy($dummy, $this->_img['main']['resource'], 0, 0, 0, 0, $this->_img['main']['width'], $this->_img['main']['height']);

    584. 

  584.                         if ($output_quality === false) {

    585. 

  585.                             $output_quality = IMAGE_TOOLBOX_DEFAULT_8BIT_COLORS;

    586. 

  586.                         }

    587. 

  587.                         imagetruecolortopalette($dummy, $dither, $output_quality);

    588. 

  588.                     }

    589. 

  589.                     imagepng($dummy);

    590. 

  590.                     imagedestroy($dummy);

    591. 

  591.                 } else {

    592. 

  592.                     imagepng($this->_img['main']['resource']);

    593. 

  593.                 }

    594. 

  594.                 break;

    595. 

  595. 

    596. 

  596.             default:

    597. 

  597.                 trigger_error($this->_error_prefix . 'Output-Imagetype not supported.', E_USER_ERROR);

    598. 

  598.                 return null;

    599. 

  599.         }

    600. 

  600.         return true;

    601. 

  601.     }

    602. 

  602. 

    603. 

  603.     /**

    604. 

  604.      * Save a image to disk

    605. 

  605.      *

    606. 

  606.      * $output_type can be one of the following:<br>

    607. 

  607.      * <ul>

    608. 

  608.      * <li>'gif' -> gif image (if supported) (8-bit indexed colors)</li>

    609. 

  609.      * <li>'png' -> png image (if supported) (truecolor)</li>

    610. 

  610.      * <li>'png8' -> png image (if supported) (8-bit indexed colors)</li>

    611. 

  611.      * <li>'jpg' -> jpeg image (if supported) (truecolor)</li>

    612. 

  612.      * </ul>

    613. 

  613.      * (default: same as original)

    614. 

  614.      *

    615. 

  615.      * $dither:<br>

    616. 

  616.      * If this is true than dither is used on the conversion from truecolor to 8-bit indexed imageformats (png8, gif)<br>

    617. 

  617.      * (default = false)

    618. 

  618.      *

    619. 

  619.      * @param string $filename filename of saved image

    620. 

  620.      * @param string|integer $output_type type of saved image

    621. 

  621.      * @param integer $output_quality jpeg quality of saved image (default: IMAGE_TOOLBOX_DEFAULT_JPEG_QUALITY)

    622. 

  622.      * @param bool $dither use dither

    623. 

  623.      * @return bool true on success, otherwise false

    624. 

  624.      */

    625. 

  625.     function save($filename, $output_type = false, $output_quality = false, $dither = false) {

    626. 

  626.         if ($output_type === false) {

    627. 

  627.             $output_type = $this->_img['main']['output_type'];

    628. 

  628.         }

    629. 

  629.         switch ($output_type) {

    630. 

  630.             case 1:

    631. 

  631.             case 'gif':

    632. 

  632.             case 'GIF':

    633. 

  633.                 if ($this->_types[1]['supported'] < 2) {

    634. 

  634.                     trigger_error($this->_error_prefix . 'Imagetype (' . $this->_types[$output_type]['ext'] . ') not supported for creating/writing.', E_USER_ERROR);

    635. 

  635.                     return null;

    636. 

  636.                 }

    637. 

  637.                 if ($this->_gd_version >= 2) {

    638. 

  638.                     if ($this->_img['main']['indexedcolors'] == 0) {

    639. 

  639.                         $dummy = imagecreatetruecolor($this->_img['main']['width'], $this->_img['main']['height']);

    640. 

  640.                         imagecopy($dummy, $this->_img['main']['resource'], 0, 0, 0, 0, $this->_img['main']['width'], $this->_img['main']['height']);

    641. 

  641.                         if ($output_quality === false) {

    642. 

  642.                             $output_quality = IMAGE_TOOLBOX_DEFAULT_8BIT_COLORS;

    643. 

  643.                         }

    644. 

  644.                         imagetruecolortopalette($dummy, $dither, $output_quality);

    645. 

  645.                     }

    646. 

  646.                     imagegif($dummy, $filename);

    647. 

  647.                     imagedestroy($dummy);

    648. 

  648.                 } else {

    649. 

  649.                     imagegif($this->_img['main']['resource']);

    650. 

  650.                 }

    651. 

  651.                 break;

    652. 

  652. 

    653. 

  653.             case 2:

    654. 

  654.             case '2':

    655. 

  655.             case 'jpg':

    656. 

  656.             case 'jpeg':

    657. 

  657.             case 'JPG':

    658. 

  658.             case 'JPEG':

    659. 

  659.                 if ($this->_types[2]['supported'] < 2) {

    660. 

  660.                     trigger_error($this->_error_prefix . 'Imagetype (' . $this->_types[$output_type]['ext'] . ') not supported for creating/writing.', E_USER_ERROR);

    661. 

  661.                     return null;

    662. 

  662.                 }

    663. 

  663.                 if ($output_quality === false) {

    664. 

  664.                     $output_quality = IMAGE_TOOLBOX_DEFAULT_JPEG_QUALITY;

    665. 

  665.                 }

    666. 

  666.                 imagejpeg($this->_img['main']['resource'], $filename, $output_quality);

    667. 

  667.                 break;

    668. 

  668. 

    669. 

  669.             case 3:

    670. 

  670.             case '3':

    671. 

  671.             case 'png':

    672. 

  672.             case 'PNG':

    673. 

  673.             case 'png24':

    674. 

  674.             case 'PNG24':

    675. 

  675.                 if ($this->_types[3]['supported'] < 2) {

    676. 

  676.                     trigger_error($this->_error_prefix . 'Imagetype (' . $this->_types[$output_type]['ext'] . ') not supported for creating/writing.', E_USER_ERROR);

    677. 

  677.                     return null;

    678. 

  678.                 }

    679. 

  679.                 header('Content-type: ' . $this->_types[$output_type]['mime']);

    680. 

  680.                 imagepng($this->_img['main']['resource'], $filename);

    681. 

  681.                 break;

    682. 

  682. 

    683. 

  683.             case 4:

    684. 

  684.             case '4':

    685. 

  685.             case 'png8':

    686. 

  686.             case 'PNG8':

    687. 

  687.                 if ($this->_types[3]['supported'] < 2) {

    688. 

  688.                     trigger_error($this->_error_prefix . 'Imagetype (' . $this->_types[$output_type]['ext'] . ') not supported for creating/writing.', E_USER_ERROR);

    689. 

  689.                     return null;

    690. 

  690.                 }

    691. 

  691.                 if ($this->_gd_version >= 2) {

    692. 

  692.                     if ($this->_img['main']['indexedcolors'] == 0) {

    693. 

  693.                         $dummy = imagecreatetruecolor($this->_img['main']['width'], $this->_img['main']['height']);

    694. 

  694.                         imagecopy($dummy, $this->_img['main']['resource'], 0, 0, 0, 0, $this->_img['main']['width'], $this->_img['main']['height']);

    695. 

  695.                         if ($output_quality === false) {

    696. 

  696.                             $output_quality = IMAGE_TOOLBOX_DEFAULT_8BIT_COLORS;

    697. 

  697.                         }

    698. 

  698.                         imagetruecolortopalette($dummy, $dither, $output_quality);

    699. 

  699.                     }

    700. 

  700.                     imagepng($dummy, $filename);

    701. 

  701.                     imagedestroy($dummy);

    702. 

  702.                 } else {

    703. 

  703.                     imagepng($this->_img['main']['resource'], $filename);

    704. 

  704.                 }

    705. 

  705.                 break;

    706. 

  706. 

    707. 

  707.             default:

    708. 

  708.                 trigger_error($this->_error_prefix . 'Output-Imagetype not supported.', E_USER_ERROR);

    709. 

  709.                 return null;

    710. 

  710.         }

    711. 

  711.         return true;

    712. 

  712.     }

    713. 

  713. 

    714. 

  714.     /**

    715. 

  715.      * Sets the resize method of choice

    716. 

  716.      * 

    717. 

  717.      * $method can be one of the following:<br>

    718. 

  718.      * <ul>

    719. 

  719.      * <li>'resize' -> supported by every version of GD (fast but ugly resize of image)</li>

    720. 

  720.      * <li>'resample' -> only supported by GD version >= 2.0 (slower but antialiased resize of image)</li>

    721. 

  721.      * <li>'workaround' -> supported by every version of GD (workaround function for bicubic resizing, downsizing, VERY slow!, taken from php.net comments)</li>

    722. 

  722.      * <li>'workaround2' -> supported by every version of GD (alternative workaround function for bicubic resizing, down- and upsizing, VERY VERY slow!, taken from php.net comments)</li>

    723. 

  723.      * </ul>

    724. 

  724.      *

    725. 

  725.      * @param string|integer $method resize method

    726. 

  726.      * @return bool true on success, otherwise false

    727. 

  727.      */

    728. 

  728.     function setResizeMethod($method) {

    729. 

  729.         switch ($method) {

    730. 

  730.             case 1:

    731. 

  731.             case '1':

    732. 

  732.             case 'resize':

    733. 

  733.                 $this->_resize_function = 'imagecopyresized';

    734. 

  734.                 break;

    735. 

  735. 

    736. 

  736.             case 2:

    737. 

  737.             case '2':

    738. 

  738.             case 'resample':

    739. 

  739.                 if (!function_exists('imagecopyresampled')) {

    740. 

  740.                     // no error message. just return false.

    741. 

  741.                     return null;

    742. 

  742.                 }

    743. 

  743.                 $this->_resize_function = 'imagecopyresampled';

    744. 

  744.                 break;

    745. 

  745. 

    746. 

  746.             case 3:

    747. 

  747.             case '3':

    748. 

  748.             case 'resample_workaround':

    749. 

  749.             case 'workaround':

    750. 

  750.             case 'bicubic':

    751. 

  751.                 $this->_resize_function = '$this->_imageCopyResampledWorkaround';

    752. 

  752.                 break;

    753. 

  753. 

    754. 

  754.             case 4:

    755. 

  755.             case '4':

    756. 

  756.             case 'resample_workaround2':

    757. 

  757.             case 'workaround2':

    758. 

  758.             case 'bicubic2':

    759. 

  759.                 $this->_resize_function = '$this->_imageCopyResampledWorkaround2';

    760. 

  760.                 break;

    761. 

  761. 

    762. 

  762.             default:

    763. 

  763.                 trigger_error($this->_error_prefix . 'Resizemethod not supported.', E_USER_ERROR);

    764. 

  764.                 return null;

    765. 

  765.         }

    766. 

  766.         return true;

    767. 

  767.     }

    768. 

  768. 

    769. 

  769.     /**

    770. 

  770.      * Resize the current image

    771. 

  771.      * 

    772. 

  772.      * if $width = 0 the new width will be calculated from the $height value preserving the correct aspectratio.<br>

    773. 

  773.      *

    774. 

  774.      * if $height = 0 the new height will be calculated from the $width value preserving the correct aspectratio.<br>

    775. 

  775.      *

    776. 

  776.      * $mode can be one of the following:<br>

    777. 

  777.      * <ul>

    778. 

  778.      * <li>0 -> image will be resized to the new output size, regardless of the original aspectratio. (default)</li>

    779. 

  779.      * <li>1 -> image will be cropped if necessary to preserve the aspectratio and avoid image distortions.</li>

    780. 

  780.      * <li>2 -> image will be resized preserving its original aspectratio. differences to the new outputsize will be filled with $bgcolor</li>

    781. 

  781.      * </ul>

    782. 

  782.      *

    783. 

  783.      * if $autorotate is set to true the given $width and $height values may "change place" if the given image bias is different from the original one.<br>

    784. 

  784.      * if either $width or $height is 0, the new size will be applied to either the new width or the new height based on the bias value of the original image.<br>

    785. 

  785.      * (default = false)

    786. 

  786.      *

    787. 

  787.      * @param integer $width new width of image

    788. 

  788.      * @param integer $height new height of image

    789. 

  789.      * @param integer $mode resize mode

    790. 

  790.      * @param bool $autorotate use autorotating

    791. 

  791.      * @param string $bgcolor background fillcolor (hexformat, e.g. '#FF0000')

    792. 

  792.      * @return bool true on success, otherwise false

    793. 

  793.      */

    794. 

  794.     function newOutputSize($width, $height, $mode = 0, $autorotate = false, $bgcolor = '#000000') {

    795. 

  795.         if ($width > 0 && $height > 0 && is_int($width) && is_int($height)) {

    796. 

  796.             //ignore aspectratio

    797. 

  797.             if (!$mode) {

    798. 

  798.                 //do not crop to get correct aspectratio

    799. 

  799.                 ($width >= $height) ? ($this->_img['target']['bias'] = IMAGE_TOOLBOX_BIAS_HORIZONTAL) : ($this->_img['target']['bias'] = IMAGE_TOOLBOX_BIAS_VERTICAL);

    800. 

  800.                 if ($this->_img['main']['bias'] == $this->_img['target']['bias'] || !$autorotate) {

    801. 

  801.                     $this->_img['target']['width'] = $width;

    802. 

  802.                     $this->_img['target']['height'] = $height;

    803. 

  803.                 } else {

    804. 

  804.                     $this->_img['target']['width'] = $height;

    805. 

  805.                     $this->_img['target']['height'] = $width;

    806. 

  806.                 }

    807. 

  807.                 $this->_img['target']['aspectratio'] = $this->_img['target']['width'] / $this->_img['target']['height'];

    808. 

  808. 

    809. 

  809.                 $cpy_w = $this->_img['main']['width'];

    810. 

  810.                 $cpy_h = $this->_img['main']['height'];

    811. 

  811.                 $cpy_w_offset = 0;

    812. 

  812.                 $cpy_h_offset = 0;

    813. 

  813.             } elseif ($mode == 1) {

    814. 

  814.                 //crop to get correct aspectratio

    815. 

  815.                 ($width >= $height) ? ($this->_img['target']['bias'] = IMAGE_TOOLBOX_BIAS_HORIZONTAL) : ($this->_img['target']['bias'] = IMAGE_TOOLBOX_BIAS_VERTICAL);

    816. 

  816.                 if ($this->_img['main']['bias'] == $this->_img['target']['bias'] || !$autorotate) {

    817. 

  817.                     $this->_img['target']['width'] = $width;

    818. 

  818.                     $this->_img['target']['height'] = $height;

    819. 

  819.                 } else {

    820. 

  820.                     $this->_img['target']['width'] = $height;

    821. 

  821.                     $this->_img['target']['height'] = $width;

    822. 

  822.                 }

    823. 

  823.                 $this->_img['target']['aspectratio'] = $this->_img['target']['width'] / $this->_img['target']['height'];

    824. 

  824. 

    825. 

  825.                 if ($this->_img['main']['width'] / $this->_img['target']['width'] >= $this->_img['main']['height'] / $this->_img['target']['height']) {

    826. 

  826.                     $cpy_h = $this->_img['main']['height'];

    827. 

  827.                     $cpy_w = (integer) $this->_img['main']['height'] * $this->_img['target']['aspectratio'];

    828. 

  828.                     $cpy_w_offset = (integer) ($this->_img['main']['width'] - $cpy_w) / 2;

    829. 

  829.                     $cpy_h_offset = 0;

    830. 

  830.                 } else {

    831. 

  831.                     $cpy_w = $this->_img['main']['width'];

    832. 

  832.                     $cpy_h = (integer) $this->_img['main']['width'] / $this->_img['target']['aspectratio'];

    833. 

  833.                     $cpy_h_offset = (integer) ($this->_img['main']['height'] - $cpy_h) / 2;

    834. 

  834.                     $cpy_w_offset = 0;

    835. 

  835.                 }

    836. 

  836.             } elseif ($mode == 2) {

    837. 

  837.                 //fill remaining background with a color to keep aspectratio

    838. 

  838.                 $final_aspectratio = $width / $height;

    839. 

  839.                 if ($final_aspectratio < $this->_img['main']['aspectratio']) {

    840. 

  840.                     $this->_img['target']['width'] = $width;

    841. 

  841.                     $this->_img['target']['height'] = (integer) $width / $this->_img['main']['aspectratio'];

    842. 

  842.                     $cpy_w_offset2 = 0;

    843. 

  843.                     $cpy_h_offset2 = (integer) (($height - $this->_img['target']['height']) / 2);

    844. 

  844.                 } else {

    845. 

  845.                     $this->_img['target']['height'] = $height;

    846. 

  846.                     $this->_img['target']['width'] = (integer) $height * $this->_img['main']['aspectratio'];

    847. 

  847.                     $cpy_h_offset2 = 0;

    848. 

  848.                     $cpy_w_offset2 = (integer) (($width - $this->_img['target']['width']) / 2);

    849. 

  849.                 }

    850. 

  850.                 $this->_img['target']['aspectratio'] = $this->_img['main']['aspectratio'];

    851. 

  851.                 $cpy_w = $this->_img['main']['width'];

    852. 

  852.                 $cpy_h = $this->_img['main']['height'];

    853. 

  853.                 $cpy_w_offset = 0;

    854. 

  854.                 $cpy_h_offset = 0;

    855. 

  855.             }

    856. 

  856.         } elseif (($width == 0 && $height > 0) || ($width > 0 && $height == 0) && is_int($width) && is_int($height)) {

    857. 

  857.             //keep aspectratio

    858. 

  858.             if ($autorotate == true) {

    859. 

  859.                 if ($this->_img['main']['bias'] == IMAGE_TOOLBOX_BIAS_HORIZONTAL && $width > 0) {

    860. 

  860.                     $height = $width;

    861. 

  861.                     $width = 0;

    862. 

  862.                 } elseif ($this->_img['main']['bias'] == IMAGE_TOOLBOX_BIAS_VERTICAL && $height > 0) {

    863. 

  863.                     $width = $height;

    864. 

  864.                     $height = 0;

    865. 

  865.                 }

    866. 

  866.             }

    867. 

  867.             ($width >= $height) ? ($this->_img['target']['bias'] = IMAGE_TOOLBOX_BIAS_HORIZONTAL) : ($this->_img['target']['bias'] = IMAGE_TOOLBOX_BIAS_VERTICAL);

    868. 

  868.             if ($width != 0) {

    869. 

  869.                 $this->_img['target']['width'] = $width;

    870. 

  870.                 $this->_img['target']['height'] = (integer) $width / $this->_img['main']['aspectratio'];

    871. 

  871.             } else {

    872. 

  872.                 $this->_img['target']['height'] = $height;

    873. 

  873.                 $this->_img['target']['width'] = (integer) $height * $this->_img['main']['aspectratio'];

    874. 

  874.             }

    875. 

  875.             $this->_img['target']['aspectratio'] = $this->_img['main']['aspectratio'];

    876. 

  876. 

    877. 

  877.             $cpy_w = $this->_img['main']['width'];

    878. 

  878.             $cpy_h = $this->_img['main']['height'];

    879. 

  879.             $cpy_w_offset = 0;

    880. 

  880.             $cpy_h_offset = 0;

    881. 

  881.         } else {

    882. 

  882.             trigger_error($this->_error_prefix . 'Outputwidth and -height must be integers greater zero.', E_USER_ERROR);

    883. 

  883.             return null;

    884. 

  884.         }

    885. 

  885. 

    886. 

  886.         //create resized picture

    887. 

  887.         $functionname = $this->_imagecreatefunction;

    888. 

  888.         $dummy = $functionname($this->_img['target']['width'] + 1, $this->_img['target']['height'] + 1);

    889. 

  889.         eval($this->_resize_function . '($dummy, $this->_img["main"]["resource"], 0, 0, $cpy_w_offset, $cpy_h_offset, $this->_img["target"]["width"], $this->_img["target"]["height"], $cpy_w, $cpy_h);');

    890. 

  890.         if ($mode == 2) {

    891. 

  891.             $this->_img['target']['resource'] = $functionname($width, $height);

    892. 

  892.             $fillcolor = $this->_hexToPHPColor($bgcolor);

    893. 

  893.             imagefill($this->_img['target']['resource'], 0, 0, $fillcolor);

    894. 

  894.         } else {

    895. 

  895.             $this->_img['target']['resource'] = $functionname($this->_img['target']['width'], $this->_img['target']['height']);

    896. 

  896.             $cpy_w_offset2 = 0;

    897. 

  897.             $cpy_h_offset2 = 0;

    898. 

  898.         }

    899. 

  899.         imagecopy($this->_img['target']['resource'], $dummy, $cpy_w_offset2, $cpy_h_offset2, 0, 0, $this->_img['target']['width'], $this->_img['target']['height']);

    900. 

  900.         imagedestroy($dummy);

    901. 

  901. 

    902. 

  902.         if ($mode == 2) {

    903. 

  903.             $this->_img['target']['width'] = $width;

    904. 

  904.             $this->_img['target']['height'] = $height;

    905. 

  905.         }

    906. 

  906.         //update _img['main'] with new data

    907. 

  907.         foreach ($this->_img['target'] as $key => $value) {

    908. 

  908.             $this->_img['main'][$key] = $value;

    909. 

  909.         }

    910. 

  910.         unset($this->_img['target']);

    911. 

  911. 

    912. 

  912.         return true;

    913. 

  913.     }

    914. 

  914. 

    915. 

  915.     /**

    916. 

  916.      * Adds a new image resource based on the given parameters.

    917. 

  917.      *

    918. 

  918.      * It does not overwrite the existing image resource.<br>

    919. 

  919.      * Instead it is used to load a second image to merge with the existing image.

    920. 

  920.      *

    921. 

  921.      * Parameter:<br>

    922. 

  922.      * <i>string</i> <b>$file</b> imagefile to load<br>

    923. 

  923.      * Or:<br>

    924. 

  924.      * <i>integer</i> <b>$width</b> imagewidth of new image to be created<br>

    925. 

  925.      * <i>integer</i> <b>$height</b> imageheight of new image to be created<br>

    926. 

  926.      * <i>string</i> <b>$fillcolor</b> optional fill the new image with this color (hexformat, e.g. '#FF0000')<br>

    927. 

  927.      */

    928. 

  928.     function addImage() {

    929. 

  929.         $args = func_get_args();

    930. 

  930.         $argc = func_num_args();

    931. 

  931. 

    932. 

  932.         if ($this->_addImage($argc, $args)) {

    933. 

  933.             return true;

    934. 

  934.         } else {

    935. 

  935.             trigger_error($this->_error_prefix . 'failed to add image.', E_USER_ERROR);

    936. 

  936.             return false;

    937. 

  937.         }

    938. 

  938.     }

    939. 

  939. 

    940. 

  940.     /**

    941. 

  941.      * Blend two images.

    942. 

  942.      *

    943. 

  943.      * Original image and the image loaded with {@link addImage() addImage}<br>

    944. 

  944.      * NOTE: This operation can take very long and is not intended for realtime use.

    945. 

  945.      * (but of course depends on the power of your server :) )

    946. 

  946.      *

    947. 

  947.      * IMPORTANT: {@link imagecopymerge() imagecopymerged} doesn't work with PHP 4.3.2. Bug ID: {@link http://bugs.php.net/bug.php?id=24816 24816}<br>

    948. 

  948.      *

    949. 

  949.      * $x:<br>

    950. 

  950.      * negative values are possible.<br>

    951. 

  951.      * You can also use the following keywords ('left', 'center' or 'middle', 'right').<br>

    952. 

  952.      * Additionally you can specify an offset in pixel with the keywords like this 'left +10'.<br>

    953. 

  953.      * (default = 0)

    954. 

  954.      *

    955. 

  955.      * $y:<br>

    956. 

  956.      * negative values are possible.<br>

    957. 

  957.      * You can also use the following keywords ('top', 'center' or 'middle', 'bottom').<br>

    958. 

  958.      * Additionally you can specify an offset in pixel with the keywords like this 'bottom -10'.<br>

    959. 

  959.      * (default = 0)

    960. 

  960.      *

    961. 

  961.      * Possible values for $mode:

    962. 

  962.      * <ul>

    963. 

  963.      *  <li>IMAGE_TOOLBOX_BLEND_COPY</li>

    964. 

  964.      *  <li>IMAGE_TOOLBOX_BLEND_MULTIPLY</li>

    965. 

  965.      *  <li>IMAGE_TOOLBOX_BLEND_SCREEN</li>

    966. 

  966.      *  <li>IMAGE_TOOLBOX_BLEND_DIFFERENCE</li>

    967. 

  967.      *  <li>IMAGE_TOOLBOX_BLEND_EXCLUSION</li>

    968. 

  968.      *  <li>IMAGE_TOOLBOX_BLEND_OVERLAY</li>

    969. 

  969.      * </ul>

    970. 

  970.      *

    971. 

  971.      * $percent:<br>

    972. 

  972.      * alpha value in percent of blend effect (0 - 100)<br>

    973. 

  973.      * (default = 100)

    974. 

  974.      *

    975. 

  975.      * @param string|integer $x Horizontal position of second image. 

    976. 

  976.      * @param integer $y Vertical position of second image. negative values are possible.

    977. 

  977.      * @param integer $mode blend mode.

    978. 

  978.      * @param integer $percent alpha value

    979. 

  979.      */

    980. 

  980.     function blend($x = 0, $y = 0, $mode = IMAGE_TOOLBOX_BLEND_COPY, $percent = 100) {

    981. 

  981.         if (is_string($x) || is_string($y)) {

    982. 

  982.             list($xalign, $xalign_offset) = explode(" ", $x);

    983. 

  983.             list($yalign, $yalign_offset) = explode(" ", $y);

    984. 

  984.         }

    985. 

  985.         if (is_string($x)) {

    986. 

  986.             switch ($xalign) {

    987. 

  987.                 case 'left':

    988. 

  988.                     $dst_x = 0 + $xalign_offset;

    989. 

  989.                     $src_x = 0;

    990. 

  990.                     $src_w = $this->_img['operator']['width'];

    991. 

  991.                     break;

    992. 

  992. 

    993. 

  993.                 case 'right':

    994. 

  994.                     $dst_x = ($this->_img['main']['width'] - $this->_img['operator']['width']) + $xalign_offset;

    995. 

  995.                     $src_x = 0;

    996. 

  996.                     $src_w = $this->_img['operator']['width'];

    997. 

  997.                     break;

    998. 

  998. 

    999. 

  999.                 case 'middle':

    1000. 

  1000.                 case 'center':

    1001. 

  1001.                     $dst_x = (($this->_img['main']['width'] / 2) - ($this->_img['operator']['width'] / 2)) + $yalign_offset;

    1002. 

  1002.                     $src_x = 0;

    1003. 

  1003.                     $src_w = $this->_img['operator']['width'];

    1004. 

  1004.                     break;

    1005. 

  1005.             }

    1006. 

  1006.         } else {

    1007. 

  1007.             if ($x >= 0) {

    1008. 

  1008.                 $dst_x = $x;

    1009. 

  1009.                 $src_x = 0;

    1010. 

  1010.                 $src_w = $this->_img['operator']['width'];

    1011. 

  1011.             } else {

    1012. 

  1012.                 $dst_x = 0;

    1013. 

  1013.                 $src_x = abs($x);

    1014. 

  1014.                 $src_w = $this->_img['operator']['width'] - $src_x;

    1015. 

  1015.             }

    1016. 

  1016.         }

    1017. 

  1017.         if (is_string($y)) {

    1018. 

  1018.             switch ($yalign) {

    1019. 

  1019.                 case 'top':

    1020. 

  1020.                     $dst_y = 0 + $yalign_offset;

    1021. 

  1021.                     $src_y = 0;

    1022. 

  1022.                     $src_h = $this->_img['operator']['height'];

    1023. 

  1023.                     break;

    1024. 

  1024. 

    1025. 

  1025.                 case 'bottom':

    1026. 

  1026.                     $dst_y = ($this->_img['main']['height'] - $this->_img['operator']['height']) + $yalign_offset;

    1027. 

  1027.                     $src_y = 0;

    1028. 

  1028.                     $src_h = $this->_img['operator']['height'];

    1029. 

  1029.                     break;

    1030. 

  1030. 

    1031. 

  1031.                 case 'middle':

    1032. 

  1032.                 case 'center':

    1033. 

  1033.                     $dst_y = (($this->_img['main']['height'] / 2) - ($this->_img['operator']['height'] / 2)) + $yalign_offset;

    1034. 

  1034.                     $src_y = 0;

    1035. 

  1035.                     $src_h = $this->_img['operator']['height'];

    1036. 

  1036.                     break;

    1037. 

  1037.             }

    1038. 

  1038.         } else {

    1039. 

  1039.             if ($y >= 0) {

    1040. 

  1040.                 $dst_y = $y;

    1041. 

  1041.                 $src_y = 0;

    1042. 

  1042.                 $src_h = $this->_img['operator']['height'];

    1043. 

  1043.             } else {

    1044. 

  1044.                 $dst_y = 0;

    1045. 

  1045.                 $src_y = abs($y);

    1046. 

  1046.                 $src_h = $this->_img['operator']['height'] - $src_y;

    1047. 

  1047.             }

    1048. 

  1048.         }

    1049. 

  1049.         $this->_imageBlend($mode, $dst_x, $dst_y, $src_x, $src_y, $src_w, $src_h, $percent);

    1050. 

  1050.         return true;

    1051. 

  1051.     }

    1052. 

  1052. 

    1053. 

  1053.     /**

    1054. 

  1054.      * Blend two images.

    1055. 

  1055.      *

    1056. 

  1056.      * @access private

    1057. 

  1057.      */

    1058. 

  1058.     function _imageBlend($mode, $dst_x, $dst_y, $src_x, $src_y, $src_w, $src_h, $percent) {

    1059. 

  1059.         if ($mode == IMAGE_TOOLBOX_BLEND_COPY) {

    1060. 

  1060.             if ($percent == 100) {

    1061. 

  1061.                 imagecopy($this->_img['main']['resource'], $this->_img['operator']['resource'], $dst_x, $dst_y, $src_x, $src_y, $src_w, $src_h);

    1062. 

  1062.             } else {

    1063. 

  1063.                 imagecopymerge($this->_img['main']['resource'], $this->_img['operator']['resource'], $dst_x, $dst_y, $src_x, $src_y, $src_w, $src_h, $percent);

    1064. 

  1064.             }

    1065. 

  1065.         } else {

    1066. 

  1066.             $functionname = $this->_imagecreatefunction;

    1067. 

  1067.             $dummy = $functionname($src_w, $src_h);

    1068. 

  1068.             for ($y = 0; $y < $src_h; $y++) {

    1069. 

  1069.                 for ($x = 0; $x < $src_w; $x++) {

    1070. 

  1070.                     $colorindex = imagecolorat($this->_img['main']['resource'], $dst_x + $x, $dst_y + $y);

    1071. 

  1071.                     $colorrgb1 = imagecolorsforindex($this->_img['main']['resource'], $colorindex);

    1072. 

  1072.                     $colorindex = imagecolorat($this->_img['operator']['resource'], $src_x + $x, $src_y + $y);

    1073. 

  1073.                     $colorrgb2 = imagecolorsforindex($this->_img['operator']['resource'], $colorindex);

    1074. 

  1074.                     $colorblend = $this->_calculateBlendvalue($mode, $colorrgb1, $colorrgb2);

    1075. 

  1075.                     $newcolor = imagecolorallocate($dummy, $colorblend['red'], $colorblend['green'], $colorblend['blue']);

    1076. 

  1076.                     imagesetpixel($dummy, $x, $y, $newcolor);

    1077. 

  1077.                 }

    1078. 

  1078.             }

    1079. 

  1079. 

    1080. 

  1080.             $this->_img['target']['resource'] = $functionname($this->_img['main']['width'], $this->_img['main']['height']);

    1081. 

  1081.             imagecopy($this->_img['target']['resource'], $this->_img['main']['resource'], 0, 0, 0, 0, $this->_img['main']['width'], $this->_img['main']['height']);

    1082. 

  1082.             imagecopymerge($this->_img['target']['resource'], $dummy, $dst_x, $dst_y, $src_x, $src_y, $src_w, $src_h, $percent);

    1083. 

  1083. 

    1084. 

  1084.             $this->_img['main']['resource'] = $this->_img['target']['resource'];

    1085. 

  1085.             unset($this->_img['target']);

    1086. 

  1086.         }

    1087. 

  1087.     }

    1088. 

  1088. 

    1089. 

  1089.     /**

    1090. 

  1090.      * Calculate blend values for given blend mode

    1091. 

  1091.      *

    1092. 

  1092.      * @access private

    1093. 

  1093.      */

    1094. 

  1094.     function _calculateBlendvalue($mode, $colorrgb1, $colorrgb2) {

    1095. 

  1095.         switch ($mode) {

    1096. 

  1096.             case IMAGE_TOOLBOX_BLEND_MULTIPLY:

    1097. 

  1097.                 $c['red'] = ($colorrgb1['red'] * $colorrgb2['red']) >> 8;

    1098. 

  1098.                 $c['green'] = ($colorrgb1['green'] * $colorrgb2['green']) >> 8;

    1099. 

  1099.                 $c['blue'] = ($colorrgb1['blue'] * $colorrgb2['blue']) >> 8;

    1100. 

  1100.                 break;

    1101. 

  1101. 

    1102. 

  1102.             case IMAGE_TOOLBOX_BLEND_SCREEN:

    1103. 

  1103.                 $c['red'] = 255 - ((255 - $colorrgb1['red']) * (255 - $colorrgb2['red']) >> 8);

    1104. 

  1104.                 $c['green'] = 255 - ((255 - $colorrgb1['green']) * (255 - $colorrgb2['green']) >> 8);

    1105. 

  1105.                 $c['blue'] = 255 - ((255 - $colorrgb1['blue']) * (255 - $colorrgb2['blue']) >> 8);

    1106. 

  1106.                 break;

    1107. 

  1107. 

    1108. 

  1108.             case IMAGE_TOOLBOX_BLEND_DIFFERENCE:

    1109. 

  1109.                 $c['red'] = abs($colorrgb1['red'] - $colorrgb2['red']);

    1110. 

  1110.                 $c['green'] = abs($colorrgb1['green'] - $colorrgb2['green']);

    1111. 

  1111.                 $c['blue'] = abs($colorrgb1['blue'] - $colorrgb2['blue']);

    1112. 

  1112.                 break;

    1113. 

  1113. 

    1114. 

  1114.             case IMAGE_TOOLBOX_BLEND_NEGATION:

    1115. 

  1115.                 $c['red'] = 255 - abs(255 - $colorrgb1['red'] - $colorrgb2['red']);

    1116. 

  1116.                 $c['green'] = 255 - abs(255 - $colorrgb1['green'] - $colorrgb2['green']);

    1117. 

  1117.                 $c['blue'] = 255 - abs(255 - $colorrgb1['blue'] - $colorrgb2['blue']);

    1118. 

  1118.                 break;

    1119. 

  1119. 

    1120. 

  1120.             case IMAGE_TOOLBOX_BLEND_EXCLUTION:

    1121. 

  1121.                 $c['red'] = $colorrgb1['red'] + $colorrgb2['red'] - (($colorrgb1['red'] * $colorrgb2['red']) >> 7);

    1122. 

  1122.                 $c['green'] = $colorrgb1['green'] + $colorrgb2['green'] - (($colorrgb1['green'] * $colorrgb2['green']) >> 7);

    1123. 

  1123.                 $c['blue'] = $colorrgb1['blue'] + $colorrgb2['blue'] - (($colorrgb1['blue'] * $colorrgb2['blue']) >> 7);

    1124. 

  1124.                 break;

    1125. 

  1125. 

    1126. 

  1126.             case IMAGE_TOOLBOX_BLEND_OVERLAY:

    1127. 

  1127.                 if ($colorrgb1['red'] < 128) {

    1128. 

  1128.                     $c['red'] = ($colorr…
    1129.

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