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PHP Cross Reference of phpwcms V1.5.0 _r431 (28.01.12) |
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1 <?php 2 /************************************************************************************* 3 Copyright notice 4 5 (c) 2002-2012 Oliver Georgi <oliver@phpwcms.de> // All rights reserved. 6 7 This script is part of PHPWCMS. The PHPWCMS web content management system is 8 free software; you can redistribute it and/or modify it under the terms of 9 the GNU General Public License as published by the Free Software Foundation; 10 either version 2 of the License, or (at your option) any later version. 11 12 The GNU General Public License can be found at http://www.gnu.org/copyleft/gpl.html 13 A copy is found in the textfile GPL.txt and important notices to the license 14 from the author is found in LICENSE.txt distributed with these scripts. 15 16 This script is distributed in the hope that it will be useful, but WITHOUT ANY 17 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A 18 PARTICULAR PURPOSE. See the GNU General Public License for more details. 19 20 This file incorporates work covered by the following copyright and 21 license notice: 22 23 Copyright (c) 2008 - 2012, EllisLab, Inc. (http://ellislab.com/) 24 25 Parts of this source file is subject to the Open Software License (OSL 3.0). 26 It is also available through the world wide web at this URL: 27 http://opensource.org/licenses/OSL-3.0 28 29 This copyright notice MUST APPEAR in all copies of the script! 30 31 *************************************************************************************/ 32 33 // ---------------------------------------------------------------- 34 // obligate check for phpwcms constants 35 if (!defined('PHPWCMS_ROOT')) { 36 die("You Cannot Access This Script Directly, Have a Nice Day."); 37 } 38 // ---------------------------------------------------------------- 39 40 /** 41 * Image Manipulation class 42 * 43 * Taken from CodeIgniter and adopted for use in phpwcms. 44 * 45 * @author EllisLab Dev Team 46 * @copyright Copyright (c) 2008 - 2011, EllisLab, Inc. (http://ellislab.com/) 47 * @author Oliver Georgi <oliver@phpwcms.de> 48 * @copyright Copyright (c) 2011, Oliver Georgi (http://phpwcms.de/) 49 */ 50 class Phpwcms_Image_lib { 51 52 var $image_library = 'gd2'; // Can be: imagemagick, netpbm, gd, gd2 53 var $library_path = ''; 54 var $dynamic_output = FALSE; // Whether to send to browser or write to disk 55 var $source_image = ''; 56 var $new_image = ''; 57 var $width = ''; 58 var $height = ''; 59 var $quality = '90'; 60 var $create_thumb = FALSE; 61 var $thumb_marker = '_thumb'; 62 var $maintain_ratio = TRUE; // Whether to maintain aspect ratio when resizing or use hard values 63 var $master_dim = 'auto'; // auto, height, or width. Determines what to use as the master dimension 64 var $rotation_angle = ''; 65 var $x_axis = ''; 66 var $y_axis = ''; 67 var $sharpen = FALSE; 68 var $target_ext = 'jpg'; 69 70 // Watermark Vars 71 var $wm_text = ''; // Watermark text if graphic is not used 72 var $wm_type = 'text'; // Type of watermarking. Options: text/overlay 73 var $wm_x_transp = 4; 74 var $wm_y_transp = 4; 75 var $wm_overlay_path = ''; // Watermark image path 76 var $wm_font_path = ''; // TT font 77 var $wm_font_size = 17; // Font size (different versions of GD will either use points or pixels) 78 var $wm_vrt_alignment = 'B'; // Vertical alignment: T M B 79 var $wm_hor_alignment = 'C'; // Horizontal alignment: L R C 80 var $wm_padding = 0; // Padding around text 81 var $wm_hor_offset = 0; // Lets you push text to the right 82 var $wm_vrt_offset = 0; // Lets you push text down 83 var $wm_font_color = '#ffffff'; // Text color 84 var $wm_shadow_color = ''; // Dropshadow color 85 var $wm_shadow_distance = 2; // Dropshadow distance 86 var $wm_opacity = 50; // Image opacity: 1 - 100 Only works with image 87 88 // Private Vars 89 var $source_folder = ''; 90 var $dest_folder = ''; 91 var $mime_type = ''; 92 var $orig_width = ''; 93 var $orig_height = ''; 94 var $source_ext = ''; 95 var $image_type = ''; 96 var $size_str = ''; 97 var $full_src_path = ''; 98 var $full_dst_path = ''; 99 var $create_fnc = 'imagecreatetruecolor'; 100 var $copy_fnc = 'imagecopyresampled'; 101 var $error_msg = array(); 102 var $wm_use_drop_shadow = FALSE; 103 var $wm_use_truetype = FALSE; 104 var $image_cache = array(); 105 var $image_current_vals = array(); 106 107 // Language strings 108 var $lang = array( 109 'imglib_source_image_required' => "You must specify a source image in your preferences.", 110 'imglib_gd_required' => "The GD image library is required for this feature.", 111 'imglib_gd_required_for_props' => "Your server must support the GD image library in order to determine the image properties.", 112 'imglib_unsupported_imagecreate' => "Your server does not support the GD function required to process this type of image.", 113 'imglib_gif_not_supported' => "GIF images are often not supported due to licensing restrictions. You may have to use JPG or PNG images instead.", 114 'imglib_jpg_not_supported' => "JPG images are not supported.", 115 'imglib_png_not_supported' => "PNG images are not supported.", 116 'imglib_jpg_or_png_required' => "The image resize protocol specified in your preferences only works with JPEG or PNG image types.", 117 'imglib_copy_error' => "An error was encountered while attempting to replace the file. Please make sure your file directory is writable.", 118 'imglib_rotate_unsupported' => "Image rotation does not appear to be supported by your server.", 119 'imglib_libpath_invalid' => "The path to your image library is not correct. Please set the correct path in your image preferences.", 120 'imglib_image_process_failed' => "Image processing failed. Please verify that your server supports the chosen protocol and that the path to your image library is correct.", 121 'imglib_rotation_angle_required' => "An angle of rotation is required to rotate the image.", 122 'imglib_writing_failed_gif' => "GIF image.", 123 'imglib_invalid_path' => "The path to the image is not correct.", 124 'imglib_copy_failed' => "The image copy routine failed.", 125 'imglib_missing_font' => "Unable to find a font to use.", 126 'imglib_save_failed' => "Unable to save the image. Please make sure the image and file directory are writable." 127 ); 128 var $lang_localized = FALSE; // set to TRUE if overwritten once 129 130 /** 131 * Constructor 132 * 133 * @param string 134 * @return void 135 */ 136 public function __construct($props = array()) 137 { 138 if (count($props) > 0) 139 { 140 $this->initialize($props); 141 } 142 } 143 144 // -------------------------------------------------------------------- 145 146 /** 147 * Initialize image properties 148 * 149 * Resets values in case this class is used in a loop. 150 * 151 * @return void 152 */ 153 function clear() 154 { 155 $props = array( 156 'library_path', 157 'source_image', 158 'new_image', 159 'width', 160 'height', 161 'rotation_angle', 162 'x_axis', 163 'y_axis', 164 'wm_text', 165 'wm_overlay_path', 166 'wm_font_path', 167 'wm_shadow_color', 168 'source_folder', 169 'dest_folder', 170 'mime_type', 171 'orig_width', 172 'orig_height', 173 'image_type', 174 'size_str', 175 'full_src_path', 176 'full_dst_path' 177 ); 178 179 foreach ($props as $val) 180 { 181 $this->$val = ''; 182 } 183 184 $this->image_library = 'gd2'; 185 $this->dynamic_output = FALSE; 186 $this->quality = '90'; 187 $this->create_thumb = FALSE; 188 $this->thumb_marker = '_thumb'; 189 $this->maintain_ratio = TRUE; 190 $this->master_dim = 'auto'; 191 $this->wm_type = 'text'; 192 $this->wm_x_transp = 4; 193 $this->wm_y_transp = 4; 194 $this->wm_font_size = 17; 195 $this->wm_vrt_alignment = 'B'; 196 $this->wm_hor_alignment = 'C'; 197 $this->wm_padding = 0; 198 $this->wm_hor_offset = 0; 199 $this->wm_vrt_offset = 0; 200 $this->wm_font_color = '#ffffff'; 201 $this->wm_shadow_distance = 2; 202 $this->wm_opacity = 50; 203 $this->create_fnc = 'imagecreatetruecolor'; 204 $this->copy_fnc = 'imagecopyresampled'; 205 $this->error_msg = array(); 206 $this->wm_use_drop_shadow = FALSE; 207 $this->wm_use_truetype = FALSE; 208 $this->sharpen = FALSE; 209 } 210 211 // -------------------------------------------------------------------- 212 213 /** 214 * initialize image preferences 215 * 216 * @param array 217 * @return bool 218 */ 219 function initialize($props = array()) 220 { 221 /* 222 * Convert array elements into class variables 223 */ 224 if (count($props) > 0) 225 { 226 foreach ($props as $key => $val) 227 { 228 if (property_exists($this, $key)) 229 { 230 if ($key === 'wm_font_color' || $key === 'wm_shadow_color') 231 { 232 if (preg_match('/^#?([0-9a-f]{3}|[0-9a-f]{6})$/i', $val, $matches)) 233 { 234 /* $matches[1] contains our hex color value, but it might be 235 * both in the full 6-length format or the shortened 3-length 236 * value. 237 * We'll later need the full version, so we keep it if it's 238 * already there and if not - we'll convert to it. We can 239 * access string characters by their index as in an array, 240 * so we'll do that and use concatenation to form the final 241 * value: 242 */ 243 $val = (strlen($matches[1]) === 6) 244 ? '#'.$matches[1] 245 : '#'.$matches[1][0].$matches[1][0].$matches[1][1].$matches[1][1].$matches[1][2].$matches[1][2]; 246 } 247 else 248 { 249 continue; 250 } 251 } 252 253 $this->$key = $val; 254 } 255 } 256 } 257 258 /* 259 * Is there a source image? 260 * 261 * If not, there's no reason to continue 262 * 263 */ 264 if ($this->source_image == '') 265 { 266 $this->set_error('imglib_source_image_required'); 267 return FALSE; 268 } 269 270 /* 271 * Is getimagesize() Available? 272 * 273 * We use it to determine the image properties (width/height). 274 * Note: We need to figure out how to determine image 275 * properties using ImageMagick and NetPBM 276 * 277 */ 278 if ( ! function_exists('getimagesize')) 279 { 280 $this->set_error('imglib_gd_required_for_props'); 281 return FALSE; 282 } 283 284 $this->image_library = strtolower($this->image_library); 285 286 /* 287 * Set the full server path 288 * 289 * The source image may or may not contain a path. 290 * Either way, we'll try use realpath to generate the 291 * full server path in order to more reliably read it. 292 * 293 */ 294 if (function_exists('realpath') AND @realpath($this->source_image) !== FALSE) 295 { 296 $full_source_path = str_replace("\\", "/", realpath($this->source_image)); 297 } 298 else 299 { 300 $full_source_path = $this->source_image; 301 } 302 303 $x = explode('/', $full_source_path); 304 $this->source_image = end($x); 305 $this->source_folder = str_replace($this->source_image, '', $full_source_path); 306 307 // Set the Image Properties 308 if ( ! $this->get_image_properties($this->source_folder.$this->source_image)) 309 { 310 return FALSE; 311 } 312 313 $this->source_ext = $this->explode_name($this->source_image, TRUE); 314 315 /* 316 * Assign the "new" image name/path 317 * 318 * If the user has set a "new_image" name it means 319 * we are making a copy of the source image. If not 320 * it means we are altering the original. We'll 321 * set the destination filename and path accordingly. 322 * 323 */ 324 if ($this->new_image == '') 325 { 326 $this->dest_image = $this->source_image; 327 $this->dest_folder = $this->source_folder; 328 } 329 else 330 { 331 if (strpos($this->new_image, '/') === FALSE) 332 { 333 $this->dest_folder = $this->source_folder; 334 $this->dest_image = $this->new_image; 335 } 336 else 337 { 338 if (function_exists('realpath') AND @realpath($this->new_image) !== FALSE) 339 { 340 $full_dest_path = str_replace("\\", "/", realpath($this->new_image)); 341 } 342 else 343 { 344 $full_dest_path = $this->new_image; 345 } 346 347 // Is there a file name? 348 if ( ! preg_match("#\.(jpg|jpeg|gif|png)$#i", $full_dest_path)) 349 { 350 $this->dest_folder = $full_dest_path.'/'; 351 $this->dest_image = $this->source_image; 352 } 353 else 354 { 355 $x = explode('/', $full_dest_path); 356 $this->dest_image = end($x); 357 $this->dest_folder = str_replace($this->dest_image, '', $full_dest_path); 358 } 359 } 360 } 361 362 /* 363 * Compile the finalized filenames/paths 364 * 365 * We'll create two master strings containing the 366 * full server path to the source image and the 367 * full server path to the destination image. 368 * We'll also split the destination image name 369 * so we can insert the thumbnail marker if needed. 370 * 371 */ 372 if ($this->create_thumb === FALSE OR $this->thumb_marker == '') 373 { 374 $this->thumb_marker = ''; 375 } 376 377 $xp = $this->explode_name($this->dest_image); 378 379 $filename = $xp['name']; 380 $file_ext = $xp['ext']; 381 382 $this->full_src_path = $this->source_folder.$this->source_image; 383 $this->full_dst_path = $this->dest_folder.$filename.$this->thumb_marker.$file_ext; 384 385 /* 386 * Should we maintain image proportions? 387 * 388 * When creating thumbs or copies, the target width/height 389 * might not be in correct proportion with the source 390 * image's width/height. We'll recalculate it here. 391 * 392 */ 393 if ($this->maintain_ratio === TRUE && ($this->width != '' AND $this->height != '')) 394 { 395 $this->image_reproportion(); 396 } 397 398 /* 399 * Was a width and height specified? 400 * 401 * If the destination width/height was 402 * not submitted we will use the values 403 * from the actual file 404 * 405 */ 406 if ($this->width == '') 407 $this->width = $this->orig_width; 408 409 if ($this->height == '') 410 $this->height = $this->orig_height; 411 412 // Set the quality 413 $this->quality = trim(str_replace("%", "", $this->quality)); 414 415 if ($this->quality == '' OR $this->quality == 0 OR ! is_numeric($this->quality)) 416 $this->quality = 90; 417 418 // Set the x/y coordinates 419 $this->x_axis = ($this->x_axis == '' OR ! is_numeric($this->x_axis)) ? 0 : $this->x_axis; 420 $this->y_axis = ($this->y_axis == '' OR ! is_numeric($this->y_axis)) ? 0 : $this->y_axis; 421 422 // Watermark-related Stuff... 423 if ($this->wm_overlay_path != '') 424 { 425 $this->wm_overlay_path = str_replace("\\", "/", realpath($this->wm_overlay_path)); 426 } 427 428 if ($this->wm_shadow_color != '') 429 { 430 $this->wm_use_drop_shadow = TRUE; 431 } 432 elseif ($this->wm_use_drop_shadow == TRUE AND $this->wm_shadow_color == '') 433 { 434 $this->wm_use_drop_shadow = FALSE; 435 } 436 437 if ($this->wm_font_path != '') 438 { 439 $this->wm_use_truetype = TRUE; 440 } 441 442 return TRUE; 443 } 444 445 // -------------------------------------------------------------------- 446 447 /** 448 * Image Resize 449 * 450 * This is a wrapper function that chooses the proper 451 * resize function based on the protocol specified 452 * 453 * @return bool 454 */ 455 function resize() 456 { 457 $protocol = 'image_process_' . ( $this->image_library == 'gd2' ? 'gd' : $this->image_library ); 458 459 return $this->$protocol('resize'); 460 } 461 462 /** 463 * Image Centered Crop and Resize 464 * 465 * This is a wrapper function that chooses the proper 466 * cropping and resize function based on the protocol specified 467 * but only available for ImageMagick 468 * 469 * @return bool 470 */ 471 function crop_centered_resize() 472 { 473 $protocol = 'image_process_' . ( $this->image_library == 'gd2' ? 'gd' : $this->image_library ); 474 $action = $this->image_library == 'imagemagick' ? 'crop-resize-center' : 'crop'; 475 476 return $this->$protocol($action); 477 } 478 479 // -------------------------------------------------------------------- 480 481 /** 482 * Image Crop 483 * 484 * This is a wrapper function that chooses the proper 485 * cropping function based on the protocol specified 486 * 487 * @return bool 488 */ 489 function crop() 490 { 491 $protocol = 'image_process_' . ( $this->image_library == 'gd2' ? 'gd' : $this->image_library ); 492 493 return $this->$protocol('crop'); 494 } 495 496 // -------------------------------------------------------------------- 497 498 /** 499 * Image Rotate 500 * 501 * This is a wrapper function that chooses the proper 502 * rotation function based on the protocol specified 503 * 504 * @return bool 505 */ 506 function rotate() 507 { 508 // Allowed rotation values 509 $degs = array(90, 180, 270, 'vrt', 'hor'); 510 511 if ($this->rotation_angle == '' OR ! in_array($this->rotation_angle, $degs)) 512 { 513 $this->set_error('imglib_rotation_angle_required'); 514 return FALSE; 515 } 516 517 // Reassign the width and height 518 if ($this->rotation_angle == 90 OR $this->rotation_angle == 270) 519 { 520 $this->width = $this->orig_height; 521 $this->height = $this->orig_width; 522 } 523 else 524 { 525 $this->width = $this->orig_width; 526 $this->height = $this->orig_height; 527 } 528 529 530 // Choose resizing function 531 if ($this->image_library == 'imagemagick' OR $this->image_library == 'netpbm') 532 { 533 $protocol = 'image_process_'.$this->image_library; 534 535 return $this->$protocol('rotate'); 536 } 537 538 if ($this->rotation_angle == 'hor' OR $this->rotation_angle == 'vrt') 539 { 540 return $this->image_mirror_gd(); 541 } 542 else 543 { 544 return $this->image_rotate_gd(); 545 } 546 } 547 548 // -------------------------------------------------------------------- 549 550 /** 551 * Image Process Using GD/GD2 552 * 553 * This function will resize or crop 554 * 555 * @param string 556 * @return bool 557 */ 558 function image_process_gd($action = 'resize') 559 { 560 $v2_override = FALSE; 561 562 // If the target width/height match the source, AND if the new file name is not equal to the old file name 563 // we'll simply make a copy of the original with the new name... assuming dynamic rendering is off. 564 if ($this->dynamic_output === FALSE AND $this->orig_width == $this->width AND $this->orig_height == $this->height) 565 { 566 if ($this->source_image != $this->new_image AND @copy($this->full_src_path, $this->full_dst_path)) 567 { 568 @chmod($this->full_dst_path, 0666); 569 } 570 571 return TRUE; 572 } 573 574 // Let's set up our values based on the action 575 if ($action == 'crop') 576 { 577 // Reassign the source width/height if cropping 578 $this->orig_width = $this->width; 579 $this->orig_height = $this->height; 580 581 // GD 2.0 has a cropping bug so we'll test for it 582 if ($this->gd_version() !== FALSE) 583 { 584 $gd_version = str_replace('0', '', $this->gd_version()); 585 $v2_override = ($gd_version == 2) ? TRUE : FALSE; 586 } 587 } 588 else 589 { 590 // If resizing the x/y axis must be zero 591 $this->x_axis = 0; 592 $this->y_axis = 0; 593 } 594 595 // Create the image handle 596 if ( ! ($src_img = $this->image_create_gd())) 597 { 598 return FALSE; 599 } 600 601 // Create The Image 602 // 603 // old conditional which users report cause problems with shared GD libs who report themselves as "2.0 or greater" 604 // it appears that this is no longer the issue that it was in 2004, so we've removed it, retaining it in the comment 605 // below should that ever prove inaccurate. 606 // 607 // if ($this->image_library == 'gd2' AND function_exists('imagecreatetruecolor') AND $v2_override == FALSE) 608 if ($this->image_library == 'gd2' AND function_exists('imagecreatetruecolor')) 609 { 610 $create = 'imagecreatetruecolor'; 611 $copy = 'imagecopyresampled'; 612 } 613 else 614 { 615 $create = 'imagecreate'; 616 $copy = 'imagecopyresized'; 617 } 618 619 $dst_img = $create($this->width, $this->height); 620 621 if ($this->image_type == 3) // png we can actually preserve transparency 622 { 623 imagealphablending($dst_img, FALSE); 624 imagesavealpha($dst_img, TRUE); 625 } 626 627 $copy($dst_img, $src_img, 0, 0, $this->x_axis, $this->y_axis, $this->width, $this->height, $this->orig_width, $this->orig_height); 628 629 // Show the image 630 if ($this->dynamic_output == TRUE) 631 { 632 $this->image_display_gd($dst_img); 633 } 634 else 635 { 636 // Or save it 637 if ( ! $this->image_save_gd($dst_img)) 638 { 639 return FALSE; 640 } 641 } 642 643 // Kill the file handles 644 imagedestroy($dst_img); 645 imagedestroy($src_img); 646 647 // Set the file to 777 648 @chmod($this->full_dst_path, 0666); 649 650 return TRUE; 651 } 652 653 // -------------------------------------------------------------------- 654 655 /** 656 * Image Process Using ImageMagick 657 * 658 * This function will resize, crop or rotate 659 * 660 * @param string 661 * @return bool 662 */ 663 function image_process_imagemagick($action = 'resize') 664 { 665 // Do we have a vaild library path? 666 if ($this->library_path == '') 667 { 668 $this->set_error('imglib_libpath_invalid'); 669 return FALSE; 670 } 671 672 if ( ! preg_match("/convert$/i", $this->library_path)) 673 { 674 $this->library_path = rtrim($this->library_path, '/').'/convert'; 675 } 676 677 // Execute the command 678 $cmd = $this->library_path; 679 if($this->target_ext == 'jpg') 680 { 681 $cmd .= ' -colorspace RGB -type TrueColor'; 682 } 683 elseif($this->target_ext == 'png') 684 { 685 $cmd .= ' -colorspace RGB'; 686 } 687 elseif($this->target_ext == 'gif') 688 { 689 $cmd .= ' -colors 256'; 690 } 691 $cmd .= ' -quality '.$this->quality; 692 if($this->source_ext == 'pdf') { 693 $cmd .= ' -define pdf:use-cropbox=true'; 694 } 695 $cmd .= ' -antialias'; 696 697 if($this->sharpen) 698 { 699 //Sharpen Level 700 switch($this->sharpen) 701 { 702 case 1: $cmd .= ' -sharpen 1x10'; break; 703 case 2: $cmd .= ' -sharpen 3x10'; break; 704 case 3: $cmd .= ' -sharpen 5x10'; break; 705 case 4: $cmd .= ' -sharpen 7x10'; break; 706 case 5: $cmd .= ' -sharpen 9x10'; break; 707 } 708 } 709 710 if ($action == 'crop') 711 { 712 $cmd .= ' -crop '.$this->width.'x'.$this->height.'+'.$this->x_axis.'+'.$this->y_axis.' ' . escapeshellarg($this->full_src_path.'[0]') . ' -strip ' . escapeshellarg($this->full_dst_path) . ' 2>&1'; 713 } 714 elseif($action == 'crop-resize-center') 715 { 716 // combined centered crop and resize 717 $cmd .= ' -resize x'.($this->height*2) . " -resize '" . ($this->width*2) . "x<' -resize 50% -gravity center "; 718 $cmd .= ' -crop '.$this->width.'x'.$this->height.'+0+0 +repage ' . escapeshellarg($this->full_src_path.'[0]') . ' -strip ' . escapeshellarg($this->full_dst_path) . ' 2>&1'; 719 } 720 elseif ($action == 'rotate') 721 { 722 switch ($this->rotation_angle) 723 { 724 case 'hor' : $angle = '-flop'; 725 break; 726 case 'vrt' : $angle = '-flip'; 727 break; 728 default : $angle = '-rotate '.$this->rotation_angle; 729 break; 730 } 731 732 $cmd .= ' '.$angle.' ' . escapeshellarg($this->full_src_path.'[0]') . ' -strip ' . escapeshellarg($this->full_dst_path) . ' 2>&1'; 733 } 734 else // Resize 735 { 736 $cmd .= ' -resize '.$this->width.'x'.$this->height.' ' . escapeshellarg($this->full_src_path.'[0]') . ' -strip ' . escapeshellarg($this->full_dst_path) . ' 2>&1'; 737 } 738 739 $retval = 1; 740 741 // debug commands 742 //write_textfile(PHPWCMS_TEMP.'imagemagick.log', date('Y-m-d H:i:s').' - '.$cmd.LF, 'a'); 743 744 @exec($cmd, $output, $retval); 745 746 // Did it work? 747 if ($retval > 0) 748 { 749 $this->set_error('imglib_image_process_failed'); 750 return FALSE; 751 } 752 753 // Set the file to 777 754 @chmod($this->full_dst_path, 0666); 755 756 return TRUE; 757 } 758 759 // -------------------------------------------------------------------- 760 761 /** 762 * Image Process Using NetPBM 763 * 764 * This function will resize, crop or rotate 765 * 766 * @param string 767 * @return bool 768 */ 769 function image_process_netpbm($action = 'resize') 770 { 771 if ($this->library_path == '') 772 { 773 $this->set_error('imglib_libpath_invalid'); 774 return FALSE; 775 } 776 777 // Build the resizing command 778 switch ($this->image_type) 779 { 780 case 1 : 781 $cmd_in = 'giftopnm'; 782 $cmd_out = 'ppmtogif'; 783 break; 784 case 2 : 785 $cmd_in = 'jpegtopnm'; 786 $cmd_out = 'ppmtojpeg'; 787 break; 788 case 3 : 789 $cmd_in = 'pngtopnm'; 790 $cmd_out = 'ppmtopng'; 791 break; 792 } 793 794 if ($action == 'crop') 795 { 796 $cmd_inner = 'pnmcut -left '.$this->x_axis.' -top '.$this->y_axis.' -width '.$this->width.' -height '.$this->height; 797 } 798 elseif ($action == 'rotate') 799 { 800 switch ($this->rotation_angle) 801 { 802 case 90 : $angle = 'r270'; 803 break; 804 case 180 : $angle = 'r180'; 805 break; 806 case 270 : $angle = 'r90'; 807 break; 808 case 'vrt' : $angle = 'tb'; 809 break; 810 case 'hor' : $angle = 'lr'; 811 break; 812 } 813 814 $cmd_inner = 'pnmflip -'.$angle.' '; 815 } 816 else // Resize 817 { 818 $cmd_inner = 'pnmscale -xysize '.$this->width.' '.$this->height; 819 } 820 821 $cmd = $this->library_path.$cmd_in.' '.$this->full_src_path.' | '.$cmd_inner.' | '.$cmd_out.' > '.$this->dest_folder.'netpbm.tmp'; 822 823 $retval = 1; 824 825 @exec($cmd, $output, $retval); 826 827 // Did it work? 828 if ($retval > 0) 829 { 830 $this->set_error('imglib_image_process_failed'); 831 return FALSE; 832 } 833 834 // With NetPBM we have to create a temporary image. 835 // If you try manipulating the original it fails so 836 // we have to rename the temp file. 837 copy ($this->dest_folder.'netpbm.tmp', $this->full_dst_path); 838 unlink ($this->dest_folder.'netpbm.tmp'); 839 @chmod($this->full_dst_path, 0666); 840 841 return TRUE; 842 } 843 844 // -------------------------------------------------------------------- 845 846 /** 847 * Image Rotate Using GD 848 * 849 * @return bool 850 */ 851 function image_rotate_gd() 852 { 853 // Create the image handle 854 if ( ! ($src_img = $this->image_create_gd())) 855 { 856 return FALSE; 857 } 858 859 // Set the background color 860 // This won't work with transparent PNG files so we are 861 // going to have to figure out how to determine the color 862 // of the alpha channel in a future release. 863 864 $white = imagecolorallocate($src_img, 255, 255, 255); 865 866 // Rotate it! 867 $dst_img = imagerotate($src_img, $this->rotation_angle, $white); 868 869 // Save the Image 870 if ($this->dynamic_output == TRUE) 871 { 872 $this->image_display_gd($dst_img); 873 } 874 else 875 { 876 // Or save it 877 if ( ! $this->image_save_gd($dst_img)) 878 { 879 return FALSE; 880 } 881 } 882 883 // Kill the file handles 884 imagedestroy($dst_img); 885 imagedestroy($src_img); 886 887 // Set the file to 777 888 889 @chmod($this->full_dst_path, 0666); 890 891 return TRUE; 892 } 893 894 // -------------------------------------------------------------------- 895 896 /** 897 * Create Mirror Image using GD 898 * 899 * This function will flip horizontal or vertical 900 * 901 * @return bool 902 */ 903 function image_mirror_gd() 904 { 905 if ( ! $src_img = $this->image_create_gd()) 906 { 907 return FALSE; 908 } 909 910 $width = $this->orig_width; 911 $height = $this->orig_height; 912 913 if ($this->rotation_angle == 'hor') 914 { 915 for ($i = 0; $i < $height; $i++, $left = 0, $right = $width-1) 916 { 917 while ($left < $right) 918 { 919 $cl = imagecolorat($src_img, $left, $i); 920 $cr = imagecolorat($src_img, $right, $i); 921 922 imagesetpixel($src_img, $left, $i, $cr); 923 imagesetpixel($src_img, $right, $i, $cl); 924 925 $left++; 926 $right--; 927 } 928 } 929 } 930 else 931 { 932 for ($i = 0; $i < $width; $i++, $top = 0, $bot = $height-1) 933 { 934 while ($top < $bot) 935 { 936 $ct = imagecolorat($src_img, $i, $top); 937 $cb = imagecolorat($src_img, $i, $bot); 938 939 imagesetpixel($src_img, $i, $top, $cb); 940 imagesetpixel($src_img, $i, $bot, $ct); 941 942 $top++; 943 $bot--; 944 } 945 } 946 } 947 948 // Show the image 949 if ($this->dynamic_output == TRUE) 950 { 951 $this->image_display_gd($src_img); 952 } 953 else 954 { 955 // Or save it 956 if ( ! $this->image_save_gd($src_img)) 957 { 958 return FALSE; 959 } 960 } 961 962 // Kill the file handles 963 imagedestroy($src_img); 964 965 // Set the file to 777 966 @chmod($this->full_dst_path, 0666); 967 968 return TRUE; 969 } 970 971 // -------------------------------------------------------------------- 972 973 /** 974 * Image Watermark 975 * 976 * This is a wrapper function that chooses the type 977 * of watermarking based on the specified preference. 978 * 979 * @param string 980 * @return bool 981 */ 982 function watermark() 983 { 984 if ($this->wm_type == 'overlay') 985 { 986 return $this->overlay_watermark(); 987 } 988 else 989 { 990 return $this->text_watermark(); 991 } 992 } 993 994 // -------------------------------------------------------------------- 995 996 /** 997 * Watermark - Graphic Version 998 * 999 * @return bool 1000 */ 1001 function overlay_watermark() 1002 { 1003 if ( ! function_exists('imagecolortransparent')) 1004 { 1005 $this->set_error('imglib_gd_required'); 1006 return FALSE; 1007 } 1008 1009 // Fetch source image properties 1010 $this->get_image_properties(); 1011 1012 // Fetch watermark image properties 1013 $props = $this->get_image_properties($this->wm_overlay_path, TRUE); 1014 $wm_img_type = $props['image_type']; 1015 $wm_width = $props['width']; 1016 $wm_height = $props['height']; 1017 1018 // Create two image resources 1019 $wm_img = $this->image_create_gd($this->wm_overlay_path, $wm_img_type); 1020 $src_img = $this->image_create_gd($this->full_src_path); 1021 1022 // Reverse the offset if necessary 1023 // When the image is positioned at the bottom 1024 // we don't want the vertical offset to push it 1025 // further down. We want the reverse, so we'll 1026 // invert the offset. Same with the horizontal 1027 // offset when the image is at the right 1028 1029 $this->wm_vrt_alignment = strtoupper(substr($this->wm_vrt_alignment, 0, 1)); 1030 $this->wm_hor_alignment = strtoupper(substr($this->wm_hor_alignment, 0, 1)); 1031 1032 if ($this->wm_vrt_alignment == 'B') 1033 $this->wm_vrt_offset = $this->wm_vrt_offset * -1; 1034 1035 if ($this->wm_hor_alignment == 'R') 1036 $this->wm_hor_offset = $this->wm_hor_offset * -1; 1037 1038 // Set the base x and y axis values 1039 $x_axis = $this->wm_hor_offset + $this->wm_padding; 1040 $y_axis = $this->wm_vrt_offset + $this->wm_padding; 1041 1042 // Set the vertical position 1043 switch ($this->wm_vrt_alignment) 1044 { 1045 case 'T': 1046 break; 1047 case 'M': $y_axis += ($this->orig_height / 2) - ($wm_height / 2); 1048 break; 1049 case 'B': $y_axis += $this->orig_height - $wm_height; 1050 break; 1051 } 1052 1053 // Set the horizontal position 1054 switch ($this->wm_hor_alignment) 1055 { 1056 case 'L': 1057 break; 1058 case 'C': $x_axis += ($this->orig_width / 2) - ($wm_width / 2); 1059 break; 1060 case 'R': $x_axis += $this->orig_width - $wm_width; 1061 break; 1062 } 1063 1064 // Build the finalized image 1065 if ($wm_img_type == 3 AND function_exists('imagealphablending')) 1066 { 1067 @imagealphablending($src_img, TRUE); 1068 } 1069 1070 // Set RGB values for text and shadow 1071 $rgba = imagecolorat($wm_img, $this->wm_x_transp, $this->wm_y_transp); 1072 $alpha = ($rgba & 0x7F000000) >> 24; 1073 1074 // make a best guess as to whether we're dealing with an image with alpha transparency or no/binary transparency 1075 if ($alpha > 0) 1076 { 1077 // copy the image directly, the image's alpha transparency being the sole determinant of blending 1078 imagecopy($src_img, $wm_img, $x_axis, $y_axis, 0, 0, $wm_width, $wm_height); 1079 } 1080 else 1081 { 1082 // set our RGB value from above to be transparent and merge the images with the specified opacity 1083 imagecolortransparent($wm_img, imagecolorat($wm_img, $this->wm_x_transp, $this->wm_y_transp)); 1084 imagecopymerge($src_img, $wm_img, $x_axis, $y_axis, 0, 0, $wm_width, $wm_height, $this->wm_opacity); 1085 } 1086 1087 // Output the image 1088 if ($this->dynamic_output == TRUE) 1089 { 1090 $this->image_display_gd($src_img); 1091 } 1092 elseif ( ! $this->image_save_gd($src_img)) 1093 { 1094 return FALSE; 1095 } 1096 1097 imagedestroy($src_img); 1098 imagedestroy($wm_img); 1099 1100 return TRUE; 1101 } 1102 1103 // -------------------------------------------------------------------- 1104 1105 /** 1106 * Watermark - Text Version 1107 * 1108 * @return bool 1109 */ 1110 function text_watermark() 1111 { 1112 if ( ! ($src_img = $this->image_create_gd())) 1113 { 1114 return FALSE; 1115 } 1116 1117 if ($this->wm_use_truetype == TRUE AND ! file_exists($this->wm_font_path)) 1118 { 1119 $this->set_error('imglib_missing_font'); 1120 return FALSE; 1121 } 1122 1123 // Fetch source image properties 1124 $this->get_image_properties(); 1125 1126 // Reverse the vertical offset 1127 // When the image is positioned at the bottom 1128 // we don't want the vertical offset to push it 1129 // further down. We want the reverse, so we'll 1130 // invert the offset. Note: The horizontal 1131 // offset flips itself automatically 1132 1133 if ($this->wm_vrt_alignment == 'B') 1134 $this->wm_vrt_offset = $this->wm_vrt_offset * -1; 1135 1136 if ($this->wm_hor_alignment == 'R') 1137 $this->wm_hor_offset = $this->wm_hor_offset * -1; 1138 1139 // Set font width and height 1140 // These are calculated differently depending on 1141 // whether we are using the true type font or not 1142 if ($this->wm_use_truetype == TRUE) 1143 { 1144 if ($this->wm_font_size == '') 1145 { 1146 $this->wm_font_size = 17; 1147 } 1148 1149 $fontwidth = $this->wm_font_size-($this->wm_font_size/4); 1150 $fontheight = $this->wm_font_size; 1151 $this->wm_vrt_offset += $this->wm_font_size; 1152 } 1153 else 1154 { 1155 $fontwidth = imagefontwidth($this->wm_font_size); 1156 $fontheight = imagefontheight($this->wm_font_size); 1157 } 1158 1159 // Set base X and Y axis values 1160 $x_axis = $this->wm_hor_offset + $this->wm_padding; 1161 $y_axis = $this->wm_vrt_offset + $this->wm_padding; 1162 1163 // Set verticle alignment 1164 if ($this->wm_use_drop_shadow == FALSE) 1165 $this->wm_shadow_distance = 0; 1166 1167 $this->wm_vrt_alignment = strtoupper(substr($this->wm_vrt_alignment, 0, 1)); 1168 $this->wm_hor_alignment = strtoupper(substr($this->wm_hor_alignment, 0, 1)); 1169 1170 switch ($this->wm_vrt_alignment) 1171 { 1172 case 'T': 1173 break; 1174 case 'M': $y_axis += ($this->orig_height/2)+($fontheight/2); 1175 break; 1176 case 'B': $y_axis += ($this->orig_height - $fontheight - $this->wm_shadow_distance - ($fontheight/2)); 1177 break; 1178 } 1179 1180 $x_shad = $x_axis + $this->wm_shadow_distance; 1181 $y_shad = $y_axis + $this->wm_shadow_distance; 1182 1183 // Set horizontal alignment 1184 switch ($this->wm_hor_alignment) 1185 { 1186 case 'L': 1187 break; 1188 case 'R': 1189 if ($this->wm_use_drop_shadow) 1190 { 1191 $x_shad += ($this->orig_width - $fontwidth*strlen($this->wm_text)); 1192 $x_axis += ($this->orig_width - $fontwidth*strlen($this->wm_text)); 1193 } 1194 break; 1195 case 'C': 1196 if ($this->wm_use_drop_shadow) 1197 { 1198 $x_shad += floor(($this->orig_width - $fontwidth*strlen($this->wm_text))/2); 1199 $x_axis += floor(($this->orig_width - $fontwidth*strlen($this->wm_text))/2); 1200 } 1201 break; 1202 } 1203 1204 if ($this->wm_use_drop_shadow) 1205 { 1206 /* Set RGB values for text and shadow 1207 * 1208 * First character is #, so we don't really need it. 1209 * Get the rest of the string and split it into 2-length 1210 * hex values: 1211 */ 1212 $txt_color = str_split(substr($this->wm_font_color, 1, 6), 2); 1213 $txt_color = imagecolorclosest($src_img, hexdec($txt_color[0]), hexdec($txt_color[1]), hexdec($txt_color[2])); 1214 $drp_color = str_split(substr($this->wm_shadow_color, 1, 6), 2); 1215 $drp_color = imagecolorclosest($src_img, hexdec($drp_color[0]), hexdec($drp_color[1]), hexdec($drp_color[2])); 1216 1217 // Add the text to the source image 1218 if ($this->wm_use_truetype) 1219 { 1220 imagettftext($src_img, $this->wm_font_size, 0, $x_shad, $y_shad, $drp_color, $this->wm_font_path, $this->wm_text); 1221 imagettftext($src_img, $this->wm_font_size, 0, $x_axis, $y_axis, $txt_color, $this->wm_font_path, $this->wm_text); 1222 } 1223 else 1224 { 1225 imagestring($src_img, $this->wm_font_size, $x_shad, $y_shad, $this->wm_text, $drp_color); 1226 imagestring($src_img, $this->wm_font_size, $x_axis, $y_axis, $this->wm_text, $txt_color); 1227 } 1228 } 1229 1230 // Output the final image 1231 if ($this->dynamic_output == TRUE) 1232 { 1233 $this->image_display_gd($src_img); 1234 } 1235 else 1236 { 1237 $this->image_save_gd($src_img); 1238 } 1239 1240 imagedestroy($src_img); 1241 1242 return TRUE; 1243 } 1244 1245 // -------------------------------------------------------------------- 1246 1247 /** 1248 * Create Image - GD 1249 * 1250 * This simply creates an image resource handle 1251 * based on the type of image being processed 1252 * 1253 * @param string 1254 * @return resource 1255 */ 1256 function image_create_gd($path = '', $image_type = '') 1257 { 1258 if ($path == '') 1259 $path = $this->full_src_path; 1260 1261 if ($image_type == '') 1262 $image_type = $this->image_type; 1263 1264 1265 switch ($image_type) 1266 { 1267 case 1 : 1268 if ( ! function_exists('imagecreatefromgif')) 1269 { 1270 $this->set_error(array('imglib_unsupported_imagecreate', 'imglib_gif_not_supported')); 1271 return FALSE; 1272 } 1273 1274 return imagecreatefromgif($path); 1275 break; 1276 case 2 : 1277 if ( ! function_exists('imagecreatefromjpeg')) 1278 { 1279 $this->set_error(array('imglib_unsupported_imagecreate', 'imglib_jpg_not_supported')); 1280 return FALSE; 1281 } 1282 1283 return imagecreatefromjpeg($path); 1284 break; 1285 case 3 : 1286 if ( ! function_exists('imagecreatefrompng')) 1287 { 1288 $this->set_error(array('imglib_unsupported_imagecreate', 'imglib_png_not_supported')); 1289 return FALSE; 1290 } 1291 1292 return imagecreatefrompng($path); 1293 break; 1294 1295 } 1296 1297 $this->set_error(array('imglib_unsupported_imagecreate')); 1298 return FALSE; 1299 } 1300 1301 // -------------------------------------------------------------------- 1302 1303 /** 1304 * Write image file to disk - GD 1305 * 1306 * Takes an image resource as input and writes the file 1307 * to the specified destination 1308 * 1309 * @param resource 1310 * @return bool 1311 */ 1312 function image_save_gd($resource) 1313 { 1314 switch ($this->image_type) 1315 { 1316 case 1 : 1317 if ( ! function_exists('imagegif')) 1318 { 1319 $this->set_error(array('imglib_unsupported_imagecreate', 'imglib_gif_not_supported')); 1320 return FALSE; 1321 } 1322 1323 if ( ! @imagegif($resource, $this->full_dst_path)) 1324 { 1325 $this->set_error('imglib_save_failed'); 1326 return FALSE; 1327 } 1328 break; 1329 case 2 : 1330 if ( ! function_exists('imagejpeg')) 1331 { 1332 $this->set_error(array('imglib_unsupported_imagecreate', 'imglib_jpg_not_supported')); 1333 return FALSE; 1334 } 1335 1336 if ( ! @imagejpeg($resource, $this->full_dst_path, $this->quality)) 1337 { 1338 $this->set_error('imglib_save_failed'); 1339 return FALSE; 1340 } 1341 break; 1342 case 3 : 1343 if ( ! function_exists('imagepng')) 1344 { 1345 $this->set_error(array('imglib_unsupported_imagecreate', 'imglib_png_not_supported')); 1346 return FALSE; 1347 } 1348 1349 if ( ! @imagepng($resource, $this->full_dst_path)) 1350 { 1351 $this->set_error('imglib_save_failed'); 1352 return FALSE; 1353 } 1354 break; 1355 default : 1356 $this->set_error('imglib_unsupported_imagecreate'); 1357 return FALSE; 1358 break; 1359 } 1360 1361 return TRUE; 1362 } 1363 1364 // -------------------------------------------------------------------- 1365 1366 /** 1367 * Dynamically outputs an image 1368 * 1369 * @param resource 1370 * @return void 1371 */ 1372 function image_display_gd($resource) 1373 { 1374 header("Content-Disposition: filename={$this->source_image};"); 1375 header("Content-Type: {$this->mime_type}"); 1376 header('Content-Transfer-Encoding: binary'); 1377 header('Last-Modified: '.gmdate('D, d M Y H:i:s', time()).' GMT'); 1378 1379 switch ($this->image_type) 1380 { 1381 case 1 : imagegif($resource); 1382 break; 1383 case 2 : imagejpeg($resource, '', $this->quality); 1384 break; 1385 case 3 : imagepng($resource); 1386 break; 1387 default : echo 'Unable to display the image'; 1388 break; 1389 } 1390 } 1391 1392 // -------------------------------------------------------------------- 1393 1394 /** 1395 * Re-proportion Image Width/Height 1396 * 1397 * When creating thumbs, the desired width/height 1398 * can end up warping the image due to an incorrect 1399 * ratio between the full-sized image and the thumb. 1400 * 1401 * This function lets us re-proportion the width/height 1402 * if users choose to maintain the aspect ratio when resizing. 1403 * 1404 * @return void 1405 */ 1406 function image_reproportion() 1407 { 1408 if ( ! is_numeric($this->width) OR ! is_numeric($this->height) OR $this->width == 0 OR $this->height == 0) 1409 return; 1410 1411 if ( ! is_numeric($this->orig_width) OR ! is_numeric($this->orig_height) OR $this->orig_width == 0 OR $this->orig_height == 0) 1412 return; 1413 1414 $new_width = ceil($this->orig_width*$this->height/$this->orig_height); 1415 $new_height = ceil($this->width*$this->orig_height/$this->orig_width); 1416 1417 $ratio = (($this->orig_height/$this->orig_width) - ($this->height/$this->width)); 1418 1419 if ($this->master_dim != 'width' AND $this->master_dim != 'height') 1420 { 1421 $this->master_dim = ($ratio < 0) ? 'width' : 'height'; 1422 } 1423 1424 if (($this->width != $new_width) AND ($this->height != $new_height)) 1425 { 1426 if ($this->master_dim == 'height') 1427 { 1428 $this->width = $new_width; 1429 } 1430 else 1431 { 1432 $this->height = $new_height; 1433 } 1434 } 1435 } 1436 1437 // -------------------------------------------------------------------- 1438 1439 /** 1440 * Get image properties 1441 * 1442 * A helper function that gets info about the file 1443 * 1444 * @param string 1445 * @return mixed 1446 */ 1447 function get_image_properties($path = '', $return = FALSE) 1448 { 1449 // For now we require GD but we should 1450 // find a way to determine this using IM or NetPBM 1451 1452 if ($path == '') 1453 $path = $this->full_src_path; 1454 1455 if ( ! file_exists($path)) 1456 { 1457 $this->set_error('imglib_invalid_path'); 1458 return FALSE; 1459 } 1460 1461 $cache = md5($path); 1462 1463 if (!isset($this->image_cache[$cache])) 1464 { 1465 1466 $vals = getimagesize($path); 1467 $types = array(1 => 'gif', 2 => 'jpeg', 3 => 'png'); 1468 $mime = (isset($types[$vals[2]])) ? 'image/'.$types[$vals[2]] : 'image/jpg'; 1469 1470 $this->image_current_vals = $vals; 1471 1472 $this->image_cache[$cache] = array( 1473 'orig_width' => $vals[0], 1474 'orig_height' => $vals[1], 1475 'image_type' => $vals[2], 1476 'size_str' => $vals[3], 1477 'mime_type' => $mime 1478 ); 1479 1480 1481 } 1482 1483 if ($return == TRUE) 1484 { 1485 return $this->image_cache[$cache]; 1486 } 1487 1488 $this->orig_width = $this->image_cache[$cache]['orig_width']; 1489 $this->orig_height = $this->image_cache[$cache]['orig_height']; 1490 $this->image_type = $this->image_cache[$cache]['image_type']; 1491 $this->size_str = $this->image_cache[$cache]['size_str']; 1492 $this->mime_type = $this->image_cache[$cache]['mime_type']; 1493 1494 return TRUE; 1495 } 1496 1497 // -------------------------------------------------------------------- 1498 1499 /** 1500 * Size calculator 1501 * 1502 * This function takes a known width x height and 1503 * recalculates it to a new size. Only one 1504 * new variable needs to be known 1505 * 1506 * $props = array( 1507 * 'width' => $width, 1508 * 'height' => $height, 1509 * 'new_width' => 40, 1510 * 'new_height' => '' 1511 * ); 1512 * 1513 * @param array 1514 * @return array 1515 */ 1516 function size_calculator($vals) 1517 { 1518 if ( ! is_array($vals)) 1519 { 1520 return; 1521 } 1522 1523 $allowed = array('new_width', 'new_height', 'width', 'height'); 1524 1525 foreach ($allowed as $item) 1526 { 1527 if ( ! isset($vals[$item]) OR $vals[$item] == '') 1528 $vals[$item] = 0; 1529 } 1530 1531 if ($vals['width'] == 0 OR $vals['height'] == 0) 1532 { 1533 return $vals; 1534 } 1535 1536 if ($vals['new_width'] == 0) 1537 { 1538 $vals['new_width'] = ceil($vals['width']*$vals['new_height']/$vals['height']); 1539 } 1540 elseif ($vals['new_height'] == 0) 1541 { 1542 $vals['new_height'] = ceil($vals['new_width']*$vals['height']/$vals['width']); 1543 } 1544 1545 return $vals; 1546 } 1547 1548 // -------------------------------------------------------------------- 1549 1550 /** 1551 * Explode source_image 1552 * 1553 * This is a helper function that extracts the extension 1554 * from the source_image. This function lets us deal with 1555 * source_images with multiple periods, like: my.cool.jpg 1556 * It returns an associative array with two elements: 1557 * $array['ext'] = '.jpg'; 1558 * $array['name'] = 'my.cool'; 1559 * 1560 * @param string 1561 * @param bool 1562 * @return array 1563 */ 1564 function explode_name($source_image, $ext_only=FALSE) 1565 { 1566 $ext = strrchr($source_image, '.'); 1567 $name = ($ext === FALSE) ? $source_image : substr($source_image, 0, -strlen($ext)); 1568 1569 return $ext_only ? strtolower(trim($ext, '.')) : array('ext' => $ext, 'name' => $name); 1570 } 1571 1572 // -------------------------------------------------------------------- 1573 1574 /** 1575 * Is GD Installed? 1576 * 1577 * @return bool 1578 */ 1579 function gd_loaded() 1580 { 1581 if ( ! extension_loaded('gd')) 1582 { 1583 /* As it is stated in the PHP manual, dl() is not always available 1584 * and even if so - it could generate an E_WARNING message on failure 1585 */ 1586 return (function_exists('dl') AND @dl('gd.so')); 1587 } 1588 1589 return TRUE; 1590 } 1591 1592 // -------------------------------------------------------------------- 1593 1594 /** 1595 * Get GD version 1596 * 1597 * @access public 1598 * @return mixed 1599 */ 1600 function gd_version() 1601 { 1602 if (function_exists('gd_info')) 1603 { 1604 $gd_version = @gd_info(); 1605 $gd_version = preg_replace("/\D/", "", $gd_version['GD Version']); 1606 1607 return $gd_version; 1608 } 1609 1610 return FALSE; 1611 } 1612 1613 // -------------------------------------------------------------------- 1614 1615 /** 1616 * Set error message 1617 * 1618 * @param string 1619 * @return void 1620 */ 1621 function set_error($msg) 1622 { 1623 if(!$this->lang_localized) { 1624 $local_lang = strtolower( isset($_SESSION["wcs_user_lang"]) ? $_SESSION["wcs_user_lang"] : $GLOBALS['phpwcms']['DOCTYPE_LANG'] ); 1625 if($local_lang && is_file(PHPWCMS_ROOT.'/include/inc_lang/image/image.'.$local_lang.'.php')) { 1626 include(PHPWCMS_ROOT.'/include/inc_lang/image/image.'.$local_lang.'.php'); 1627 $this->lang = array_merge($this->lang, $ci_lang); 1628 $this->lang_localized = TRUE; 1629 } 1630 } 1631 1632 if (is_array($msg)) 1633 { 1634 foreach ($msg as $val) 1635 { 1636 $msg = ($this->lang[$val] == FALSE) ? $val : $this->lang[$val]; 1637 $this->error_msg[] = $msg; 1638 } 1639 } 1640 else 1641 { 1642 $msg = ($this->lang[$msg] == FALSE) ? $msg : $this->lang[$msg]; 1643 $this->error_msg[] = $msg; 1644 } 1645 } 1646 1647 // -------------------------------------------------------------------- 1648 1649 /** 1650 * Show error messages 1651 * 1652 * @param string 1653 * @return string 1654 */ 1655 function display_errors($open = '<p>', $close = '</p>', $wrap_open='', $wrap_close='') 1656 { 1657 return (count($this->error_msg) > 0) ? $wrap_open . $open . implode($close . $open, $this->error_msg) . $close . $wrap_close : ''; 1658 } 1659 1660 } 1661 // END Image_lib Class 1662 1663 /* End of file Image_lib.php */ 1664 /* Location: ./system/libraries/Image_lib.php */
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| Generated: Sun Jan 29 16:31:14 2012 | Cross-referenced by PHPXref 0.7.1 |