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1 <?php 2 3 /** This file is part of KCFinder project 4 * 5 * @desc GD extension class 6 * @package KCFinder 7 * @version 2.21 8 * @author Pavel Tzonkov <[email protected]> 9 * @copyright 2010 KCFinder Project 10 * @license http://www.opensource.org/licenses/gpl-2.0.php GPLv2 11 * @license http://www.opensource.org/licenses/lgpl-2.1.php LGPLv2 12 * @link http://kcfinder.sunhater.com 13 */ 14 15 class gd { 16 17 /** GD resource 18 * @var resource */ 19 protected $image; 20 21 /** Image width 22 * @var integer */ 23 protected $width; 24 25 /** Image height 26 * @var integer */ 27 protected $height; 28 29 /** Init error 30 * @var bool */ 31 public $init_error = false; 32 33 /** Last builded image type constant (IMAGETYPE_XXX) 34 * @var integer */ 35 public $type; 36 37 /** Returns an array. Element 0 - GD resource. Element 1 - width. Element 2 - height. 38 * Returns FALSE on failure. The only one parameter $image can be an instance of this class, 39 * a GD resource, an array(width, height) or path to image file. 40 * @param mixed $image 41 * @return array */ 42 43 protected function build_image($image) { 44 45 if ($image instanceof gd) { 46 $width = $image->get_width(); 47 $height = $image->get_height(); 48 $image = $image->get_image(); 49 50 } elseif (is_resource($image) && (get_resource_type($image) == "gd")) { 51 $width = @imagesx($image); 52 $height = @imagesy($image); 53 54 } elseif (is_array($image)) { 55 list($key, $width) = each($image); 56 list($key, $height) = each($image); 57 $image = imagecreatetruecolor($width, $height); 58 59 } elseif (false !== (list($width, $height, $type) = @getimagesize($image))) { 60 $image = 61 ($type == IMAGETYPE_GIF) ? @imagecreatefromgif($image) : ( 62 ($type == IMAGETYPE_WBMP) ? @imagecreatefromwbmp($image) : ( 63 ($type == IMAGETYPE_JPEG) ? @imagecreatefromjpeg($image) : ( 64 ($type == IMAGETYPE_JPEG2000) ? @imagecreatefromjpeg($image) : ( 65 ($type == IMAGETYPE_PNG) ? imagecreatefrompng($image) : ( 66 ($type == IMAGETYPE_XBM) ? @imagecreatefromxbm($image) : false 67 ))))); 68 69 if ($type == IMAGETYPE_PNG) 70 imagealphablending($image, false); 71 } 72 73 $return = ( 74 is_resource($image) && 75 (get_resource_type($image) == "gd") && 76 isset($width) && 77 isset($height) && 78 (preg_match('/^[1-9][0-9]*$/', $width) !== false) && 79 (preg_match('/^[1-9][0-9]*$/', $height) !== false) 80 ) 81 ? array($image, $width, $height) 82 : false; 83 84 if (($return !== false) && isset($type)) 85 $this->type = $type; 86 87 return $return; 88 } 89 90 /** Parameter $image can be: 91 * 1. An instance of this class (copy instance). 92 * 2. A GD resource. 93 * 3. An array with two elements. First - width, second - height. Create a blank image. 94 * 4. A filename string. Get image form file. 95 * The non-required parameter $bigger_size is the bigger dimension (width or height) the image 96 * will be resized to. The other dimension (height or width) will be calculated autamaticaly 97 * @param mixed $image 98 * @param integer $bigger_size 99 * @return gd */ 100 101 public function __construct($image, $bigger_size=null) { 102 $this->image = $this->width = $this->height = null; 103 104 $image_details = $this->build_image($image); 105 106 if ($image_details !== false) 107 list($this->image, $this->width, $this->height) = $image_details; 108 else 109 $this->init_error = true; 110 111 if (!is_null($this->image) && 112 !is_null($bigger_size) && 113 (preg_match('/^[1-9][0-9]*$/', $bigger_size) !== false) 114 ) { 115 $image = $this->image; 116 list($width, $height) = $this->get_prop_size($bigger_size); 117 $this->image = imagecreatetruecolor($width, $height); 118 if ($this->type == IMAGETYPE_PNG) { 119 imagealphablending($this->image, false); 120 imagesavealpha($this->image, true); 121 } 122 $this->width = $width; 123 $this->height = $height; 124 $this->imagecopyresampled($image); 125 } 126 } 127 128 /** Returns the GD resource 129 * @return resource */ 130 131 public function get_image() { 132 return $this->image; 133 } 134 135 /** Returns the image width 136 * @return integer */ 137 138 public function get_width() { 139 return $this->width; 140 } 141 142 /** Returns the image height 143 * @return integer */ 144 145 public function get_height() { 146 return $this->height; 147 } 148 149 /** Returns calculated proportional width from the given height 150 * @param integer $resized_height 151 * @return integer */ 152 153 public function get_prop_width($resized_height) { 154 return intval(($this->width * $resized_height) / $this->height); 155 } 156 157 /** Returns calculated proportional height from the given width 158 * @param integer $resized_width 159 * @return integer */ 160 161 public function get_prop_height($resized_width) { 162 return intval(($this->height * $resized_width) / $this->width); 163 } 164 165 /** Returns an array with calculated proportional width & height. 166 * The parameter $bigger_size is the bigger dimension (width or height) of calculated sizes. 167 * The other dimension (height or width) will be calculated autamaticaly 168 * @param integer $bigger_size 169 * @return array */ 170 171 public function get_prop_size($bigger_size) { 172 173 if ($this->width > $this->height) { 174 $width = $bigger_size; 175 $height = $this->get_prop_height($width); 176 177 } elseif ($this->height > $this->width) { 178 $height = $bigger_size; 179 $width = $this->get_prop_width($height); 180 181 } else 182 $width = $height = $bigger_size; 183 184 return array($width, $height); 185 } 186 187 /** Resize image. Returns TRUE on success or FALSE on failure 188 * @param integer $width 189 * @param integer $height 190 * @return bool */ 191 192 public function resize($width, $height) { 193 if (!$width) $width = 1; 194 if (!$height) $height = 1; 195 return ( 196 (false !== ($img = new gd(array($width, $height)))) && 197 $img->imagecopyresampled($this) && 198 (false !== ($this->image = $img->get_image())) && 199 (false !== ($this->width = $img->get_width())) && 200 (false !== ($this->height = $img->get_height())) 201 ); 202 } 203 204 /** Resize the given image source (GD, gd object or image file path) to fit in the own image. 205 * The outside ares will be cropped out. Returns TRUE on success or FALSE on failure 206 * @param mixed $src 207 * @return bool */ 208 209 public function resize_crop($src) { 210 $image_details = $this->build_image($src); 211 212 if ($image_details !== false) { 213 list($src, $src_width, $src_height) = $image_details; 214 215 if (($src_width / $src_height) > ($this->width / $this->height)) { 216 $src_w = $this->get_prop_width($src_height); 217 $src_h = $src_height; 218 $src_x = intval(($src_width - $src_w) / 2); 219 $src_y = 0; 220 221 } else { 222 $src_w = $src_width; 223 $src_h = $this->get_prop_height($src_width); 224 $src_x = 0; 225 $src_y = intval(($src_height - $src_h) / 2); 226 } 227 228 return imagecopyresampled($this->image, $src, 0, 0, $src_x, $src_y, $this->width, $this->height, $src_w, $src_h); 229 230 } else 231 return false; 232 } 233 234 /** Resize image to fit in given resolution. Returns TRUE on success or FALSE on failure 235 * @param integer $width 236 * @param integer $height 237 * @return bool */ 238 239 public function resize_fit($width, $height) { 240 if ((!$width && !$height) || (($width == $this->width) && ($height == $this->height))) 241 return true; 242 if (!$width || (($width / $height) > ($this->width / $this->height))) 243 $width = intval(($this->width * $height) / $this->height); 244 elseif (!$height || (($width / $height) < ($this->width / $this->height))) 245 $height = intval(($this->height * $width) / $this->width); 246 return $this->resize($width, $height); 247 } 248 249 /** Neka si predstavim vyobrazhaem pravoygylnik s razmeri $width i $height. 250 * Izobrazhenieto shte se preorazmeri taka che to shte izliza ot tozi pravoygylnik, 251 * no samo po edno (x ili y) izmerenie 252 * @param integer $width 253 * @param integer $height 254 * @return bool */ 255 256 public function resize_overflow($width, $height) { 257 258 $big = (($this->width / $this->height) > ($width / $height)) 259 ? ($this->width * $height) / $this->height 260 : ($this->height * $width) / $this->width; 261 $big = intval($big); 262 263 $return = ($img = new gd($this->image, $big)); 264 265 if ($return) { 266 $this->image = $img->get_image(); 267 $this->width = $img->get_width(); 268 $this->height = $img->get_height(); 269 } 270 271 return $return; 272 } 273 274 public function gd_color() { 275 $args = func_get_args(); 276 277 $expr_rgb = '/^rgb\(\s*(\d{1,3})\s*\,\s*(\d{1,3})\s*\,\s*(\d{1,3})\s*\)$/i'; 278 $expr_hex1 = '/^\#?([0-9a-f]{2})([0-9a-f]{2})([0-9a-f]{2})$/i'; 279 $expr_hex2 = '/^\#?([0-9a-f])([0-9a-f])([0-9a-f])$/i'; 280 $expr_byte = '/^([01]?\d?\d|2[0-4]\d|25[0-5])$/'; 281 282 if (!isset($args[0])) 283 return false; 284 285 if (count($args[0]) == 3) { 286 list($r, $g, $b) = $args[0]; 287 288 } elseif (preg_match($expr_rgb, $args[0])) { 289 list($r, $g, $b) = explode(" ", preg_replace($expr_rgb, "$1 $2 $3", $args[0])); 290 291 } elseif (preg_match($expr_hex1, $args[0])) { 292 list($r, $g, $b) = explode(" ", preg_replace($expr_hex1, "$1 $2 $3", $args[0])); 293 $r = hexdec($r); 294 $g = hexdec($g); 295 $b = hexdec($b); 296 297 } elseif (preg_match($expr_hex2, $args[0])) { 298 list($r, $g, $b) = explode(" ", preg_replace($expr_hex2, "$1$1 $2$2 $3$3", $args[0])); 299 $r = hexdec($r); 300 $g = hexdec($g); 301 $b = hexdec($b); 302 303 } elseif ((count($args) == 3) && 304 preg_match($expr_byte, $args[0]) && 305 preg_match($expr_byte, $args[1]) && 306 preg_match($expr_byte, $args[2]) 307 ) { 308 list($r, $g, $b) = $args; 309 310 } else 311 return false; 312 313 return imagecolorallocate($this->image, $r, $g, $b); 314 } 315 316 public function fill_color($color) { 317 return $this->imagefilledrectangle(0, 0, $this->width - 1, $this->height - 1, $color); 318 } 319 320 321 /* G D M E T H O D S */ 322 323 public function imagecopy( 324 $src, 325 $dst_x=0, $dst_y=0, 326 $src_x=0, $src_y=0, 327 $dst_w=null, $dst_h=null, 328 $src_w=null, $src_h=null 329 ) { 330 $image_details = $this->build_image($src); 331 332 if ($image_details !== false) { 333 list($src, $src_width, $src_height) = $image_details; 334 335 if (is_null($dst_w)) $dst_w = $this->width - $dst_x; 336 if (is_null($dst_h)) $dst_h = $this->height - $dst_y; 337 if (is_null($src_w)) $src_w = $src_width - $src_x; 338 if (is_null($src_h)) $src_h = $src_height - $src_y; 339 return imagecopy($this->image, $src, $dst_x, $dst_y, $src_x, $src_y, $src_w, $src_h); 340 341 } else 342 return false; 343 } 344 345 public function imagecopyresampled( 346 $src, 347 $dst_x=0, $dst_y=0, 348 $src_x=0, $src_y=0, 349 $dst_w=null, $dst_h=null, 350 $src_w=null, $src_h=null 351 ) { 352 $image_details = $this->build_image($src); 353 354 if ($image_details !== false) { 355 list($src, $src_width, $src_height) = $image_details; 356 357 if (is_null($dst_w)) $dst_w = $this->width - $dst_x; 358 if (is_null($dst_h)) $dst_h = $this->height - $dst_y; 359 if (is_null($src_w)) $src_w = $src_width - $src_x; 360 if (is_null($src_h)) $src_h = $src_height - $src_y; 361 return imagecopyresampled($this->image, $src, $dst_x, $dst_y, $src_x, $src_y, $dst_w, $dst_h, $src_w, $src_h); 362 363 } else 364 return false; 365 } 366 367 public function imagefilledrectangle($x1, $y1, $x2, $y2, $color) { 368 $color = $this->gd_color($color); 369 if ($color === false) return false; 370 return imagefilledrectangle($this->image, $x1, $y1, $x2, $y2, $color); 371 } 372 373 public function imagepng($filename=null, $quality=null, $filters=null) { 374 if (is_null($filename) && !headers_sent()) 375 header("Content-Type: image/png"); 376 @imagesavealpha($this->image, true); 377 return imagepng($this->image, $filename, $quality, $filters); 378 } 379 380 public function imagejpeg($filename=null, $quality=75) { 381 if (is_null($filename) && !headers_sent()) 382 header("Content-Type: image/jpeg"); 383 return imagejpeg($this->image, $filename, $quality); 384 } 385 386 public function imagegif($filename=null) { 387 if (is_null($filename) && !headers_sent()) 388 header("Content-Type: image/gif"); 389 return imagegif($this->image, $filename); 390 } 391 } 392 393 ?>
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| Generated: Fri Nov 28 20:08:37 2014 | Cross-referenced by PHPXref 0.7.1 |