-
Notifications
You must be signed in to change notification settings - Fork 7
/
Copy pathImage_lib.php
1825 lines (1580 loc) · 41.7 KB
/
Image_lib.php
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
<?php
/**
* CodeIgniter
*
* An open source application development framework for PHP
*
* This content is released under the MIT License (MIT)
*
* Copyright (c) 2014 - 2016, British Columbia Institute of Technology
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
* @package CodeIgniter
* @author EllisLab Dev Team
* @copyright Copyright (c) 2008 - 2014, EllisLab, Inc. (https://ellislab.com/)
* @copyright Copyright (c) 2014 - 2016, British Columbia Institute of Technology (http://bcit.ca/)
* @license http://opensource.org/licenses/MIT MIT License
* @link https://codeigniter.com
* @since Version 1.0.0
* @filesource
*/
defined('BASEPATH') OR exit('No direct script access allowed');
/**
* Image Manipulation class
*
* @package CodeIgniter
* @subpackage Libraries
* @category Image_lib
* @author EllisLab Dev Team
* @link https://codeigniter.com/user_guide/libraries/image_lib.html
*/
class CI_Image_lib {
/**
* PHP extension/library to use for image manipulation
* Can be: imagemagick, netpbm, gd, gd2
*
* @var string
*/
public $image_library = 'gd2';
/**
* Path to the graphic library (if applicable)
*
* @var string
*/
public $library_path = '';
/**
* Whether to send to browser or write to disk
*
* @var bool
*/
public $dynamic_output = FALSE;
/**
* Path to original image
*
* @var string
*/
public $source_image = '';
/**
* Path to the modified image
*
* @var string
*/
public $new_image = '';
/**
* Image width
*
* @var int
*/
public $width = '';
/**
* Image height
*
* @var int
*/
public $height = '';
/**
* Quality percentage of new image
*
* @var int
*/
public $quality = 90;
/**
* Whether to create a thumbnail
*
* @var bool
*/
public $create_thumb = FALSE;
/**
* String to add to thumbnail version of image
*
* @var string
*/
public $thumb_marker = '_thumb';
/**
* Whether to maintain aspect ratio when resizing or use hard values
*
* @var bool
*/
public $maintain_ratio = TRUE;
/**
* auto, height, or width. Determines what to use as the master dimension
*
* @var string
*/
public $master_dim = 'auto';
/**
* Angle at to rotate image
*
* @var string
*/
public $rotation_angle = '';
/**
* X Coordinate for manipulation of the current image
*
* @var int
*/
public $x_axis = '';
/**
* Y Coordinate for manipulation of the current image
*
* @var int
*/
public $y_axis = '';
// --------------------------------------------------------------------------
// Watermark Vars
// --------------------------------------------------------------------------
/**
* Watermark text if graphic is not used
*
* @var string
*/
public $wm_text = '';
/**
* Type of watermarking. Options: text/overlay
*
* @var string
*/
public $wm_type = 'text';
/**
* Default transparency for watermark
*
* @var int
*/
public $wm_x_transp = 4;
/**
* Default transparency for watermark
*
* @var int
*/
public $wm_y_transp = 4;
/**
* Watermark image path
*
* @var string
*/
public $wm_overlay_path = '';
/**
* TT font
*
* @var string
*/
public $wm_font_path = '';
/**
* Font size (different versions of GD will either use points or pixels)
*
* @var int
*/
public $wm_font_size = 17;
/**
* Vertical alignment: T M B
*
* @var string
*/
public $wm_vrt_alignment = 'B';
/**
* Horizontal alignment: L R C
*
* @var string
*/
public $wm_hor_alignment = 'C';
/**
* Padding around text
*
* @var int
*/
public $wm_padding = 0;
/**
* Lets you push text to the right
*
* @var int
*/
public $wm_hor_offset = 0;
/**
* Lets you push text down
*
* @var int
*/
public $wm_vrt_offset = 0;
/**
* Text color
*
* @var string
*/
protected $wm_font_color = '#ffffff';
/**
* Dropshadow color
*
* @var string
*/
protected $wm_shadow_color = '';
/**
* Dropshadow distance
*
* @var int
*/
public $wm_shadow_distance = 2;
/**
* Image opacity: 1 - 100 Only works with image
*
* @var int
*/
public $wm_opacity = 50;
// --------------------------------------------------------------------------
// Private Vars
// --------------------------------------------------------------------------
/**
* Source image folder
*
* @var string
*/
public $source_folder = '';
/**
* Destination image folder
*
* @var string
*/
public $dest_folder = '';
/**
* Image mime-type
*
* @var string
*/
public $mime_type = '';
/**
* Original image width
*
* @var int
*/
public $orig_width = '';
/**
* Original image height
*
* @var int
*/
public $orig_height = '';
/**
* Image format
*
* @var string
*/
public $image_type = '';
/**
* Size of current image
*
* @var string
*/
public $size_str = '';
/**
* Full path to source image
*
* @var string
*/
public $full_src_path = '';
/**
* Full path to destination image
*
* @var string
*/
public $full_dst_path = '';
/**
* File permissions
*
* @var int
*/
public $file_permissions = 0644;
/**
* Name of function to create image
*
* @var string
*/
public $create_fnc = 'imagecreatetruecolor';
/**
* Name of function to copy image
*
* @var string
*/
public $copy_fnc = 'imagecopyresampled';
/**
* Error messages
*
* @var array
*/
public $error_msg = array();
/**
* Whether to have a drop shadow on watermark
*
* @var bool
*/
protected $wm_use_drop_shadow = FALSE;
/**
* Whether to use truetype fonts
*
* @var bool
*/
public $wm_use_truetype = FALSE;
/**
* Initialize Image Library
*
* @param array $props
* @return void
*/
public function __construct($props = array())
{
if (count($props) > 0)
{
$this->initialize($props);
}
log_message('info', 'Image Lib Class Initialized');
}
// --------------------------------------------------------------------
/**
* Initialize image properties
*
* Resets values in case this class is used in a loop
*
* @return void
*/
public function clear()
{
$props = array('thumb_marker', 'library_path', 'source_image', 'new_image', 'width', 'height', 'rotation_angle', 'x_axis', 'y_axis', 'wm_text', 'wm_overlay_path', 'wm_font_path', 'wm_shadow_color', 'source_folder', 'dest_folder', 'mime_type', 'orig_width', 'orig_height', 'image_type', 'size_str', 'full_src_path', 'full_dst_path');
foreach ($props as $val)
{
$this->$val = '';
}
$this->image_library = 'gd2';
$this->dynamic_output = FALSE;
$this->quality = 90;
$this->create_thumb = FALSE;
$this->thumb_marker = '_thumb';
$this->maintain_ratio = TRUE;
$this->master_dim = 'auto';
$this->wm_type = 'text';
$this->wm_x_transp = 4;
$this->wm_y_transp = 4;
$this->wm_font_size = 17;
$this->wm_vrt_alignment = 'B';
$this->wm_hor_alignment = 'C';
$this->wm_padding = 0;
$this->wm_hor_offset = 0;
$this->wm_vrt_offset = 0;
$this->wm_font_color = '#ffffff';
$this->wm_shadow_distance = 2;
$this->wm_opacity = 50;
$this->create_fnc = 'imagecreatetruecolor';
$this->copy_fnc = 'imagecopyresampled';
$this->error_msg = array();
$this->wm_use_drop_shadow = FALSE;
$this->wm_use_truetype = FALSE;
}
// --------------------------------------------------------------------
/**
* initialize image preferences
*
* @param array
* @return bool
*/
public function initialize($props = array())
{
// Convert array elements into class variables
if (count($props) > 0)
{
foreach ($props as $key => $val)
{
if (property_exists($this, $key))
{
if (in_array($key, array('wm_font_color', 'wm_shadow_color')))
{
if (preg_match('/^#?([0-9a-f]{3}|[0-9a-f]{6})$/i', $val, $matches))
{
/* $matches[1] contains our hex color value, but it might be
* both in the full 6-length format or the shortened 3-length
* value.
* We'll later need the full version, so we keep it if it's
* already there and if not - we'll convert to it. We can
* access string characters by their index as in an array,
* so we'll do that and use concatenation to form the final
* value:
*/
$val = (strlen($matches[1]) === 6)
? '#'.$matches[1]
: '#'.$matches[1][0].$matches[1][0].$matches[1][1].$matches[1][1].$matches[1][2].$matches[1][2];
}
else
{
continue;
}
}
$this->$key = $val;
}
}
}
// Is there a source image? If not, there's no reason to continue
if ($this->source_image === '')
{
$this->set_error('imglib_source_image_required');
return FALSE;
}
/* Is getimagesize() available?
*
* We use it to determine the image properties (width/height).
* Note: We need to figure out how to determine image
* properties using ImageMagick and NetPBM
*/
if ( ! function_exists('getimagesize'))
{
$this->set_error('imglib_gd_required_for_props');
return FALSE;
}
$this->image_library = strtolower($this->image_library);
/* Set the full server path
*
* The source image may or may not contain a path.
* Either way, we'll try use realpath to generate the
* full server path in order to more reliably read it.
*/
if (($full_source_path = realpath($this->source_image)) !== FALSE)
{
$full_source_path = str_replace('\\', '/', $full_source_path);
}
else
{
$full_source_path = $this->source_image;
}
$x = explode('/', $full_source_path);
$this->source_image = end($x);
$this->source_folder = str_replace($this->source_image, '', $full_source_path);
// Set the Image Properties
if ( ! $this->get_image_properties($this->source_folder.$this->source_image))
{
return FALSE;
}
/*
* Assign the "new" image name/path
*
* If the user has set a "new_image" name it means
* we are making a copy of the source image. If not
* it means we are altering the original. We'll
* set the destination filename and path accordingly.
*/
if ($this->new_image === '')
{
$this->dest_image = $this->source_image;
$this->dest_folder = $this->source_folder;
}
elseif (strpos($this->new_image, '/') === FALSE)
{
$this->dest_folder = $this->source_folder;
$this->dest_image = $this->new_image;
}
else
{
if (strpos($this->new_image, '/') === FALSE && strpos($this->new_image, '\\') === FALSE)
{
$full_dest_path = str_replace('\\', '/', realpath($this->new_image));
}
else
{
$full_dest_path = $this->new_image;
}
// Is there a file name?
if ( ! preg_match('#\.(jpg|jpeg|gif|png)$#i', $full_dest_path))
{
$this->dest_folder = $full_dest_path.'/';
$this->dest_image = $this->source_image;
}
else
{
$x = explode('/', $full_dest_path);
$this->dest_image = end($x);
$this->dest_folder = str_replace($this->dest_image, '', $full_dest_path);
}
}
/* Compile the finalized filenames/paths
*
* We'll create two master strings containing the
* full server path to the source image and the
* full server path to the destination image.
* We'll also split the destination image name
* so we can insert the thumbnail marker if needed.
*/
if ($this->create_thumb === FALSE OR $this->thumb_marker === '')
{
$this->thumb_marker = '';
}
$xp = $this->explode_name($this->dest_image);
$filename = $xp['name'];
$file_ext = $xp['ext'];
$this->full_src_path = $this->source_folder.$this->source_image;
$this->full_dst_path = $this->dest_folder.$filename.$this->thumb_marker.$file_ext;
/* Should we maintain image proportions?
*
* When creating thumbs or copies, the target width/height
* might not be in correct proportion with the source
* image's width/height. We'll recalculate it here.
*/
if ($this->maintain_ratio === TRUE && ($this->width !== 0 OR $this->height !== 0))
{
$this->image_reproportion();
}
/* Was a width and height specified?
*
* If the destination width/height was not submitted we
* will use the values from the actual file
*/
if ($this->width === '')
{
$this->width = $this->orig_width;
}
if ($this->height === '')
{
$this->height = $this->orig_height;
}
// Set the quality
$this->quality = trim(str_replace('%', '', $this->quality));
if ($this->quality === '' OR $this->quality === 0 OR ! ctype_digit($this->quality))
{
$this->quality = 90;
}
// Set the x/y coordinates
is_numeric($this->x_axis) OR $this->x_axis = 0;
is_numeric($this->y_axis) OR $this->y_axis = 0;
// Watermark-related Stuff...
if ($this->wm_overlay_path !== '')
{
$this->wm_overlay_path = str_replace('\\', '/', realpath($this->wm_overlay_path));
}
if ($this->wm_shadow_color !== '')
{
$this->wm_use_drop_shadow = TRUE;
}
elseif ($this->wm_use_drop_shadow === TRUE && $this->wm_shadow_color === '')
{
$this->wm_use_drop_shadow = FALSE;
}
if ($this->wm_font_path !== '')
{
$this->wm_use_truetype = TRUE;
}
return TRUE;
}
// --------------------------------------------------------------------
/**
* Image Resize
*
* This is a wrapper function that chooses the proper
* resize function based on the protocol specified
*
* @return bool
*/
public function resize()
{
$protocol = ($this->image_library === 'gd2') ? 'image_process_gd' : 'image_process_'.$this->image_library;
return $this->$protocol('resize');
}
// --------------------------------------------------------------------
/**
* Image Crop
*
* This is a wrapper function that chooses the proper
* cropping function based on the protocol specified
*
* @return bool
*/
public function crop()
{
$protocol = ($this->image_library === 'gd2') ? 'image_process_gd' : 'image_process_'.$this->image_library;
return $this->$protocol('crop');
}
// --------------------------------------------------------------------
/**
* Image Rotate
*
* This is a wrapper function that chooses the proper
* rotation function based on the protocol specified
*
* @return bool
*/
public function rotate()
{
// Allowed rotation values
$degs = array(90, 180, 270, 'vrt', 'hor');
if ($this->rotation_angle === '' OR ! in_array($this->rotation_angle, $degs))
{
$this->set_error('imglib_rotation_angle_required');
return FALSE;
}
// Reassign the width and height
if ($this->rotation_angle === 90 OR $this->rotation_angle === 270)
{
$this->width = $this->orig_height;
$this->height = $this->orig_width;
}
else
{
$this->width = $this->orig_width;
$this->height = $this->orig_height;
}
// Choose resizing function
if ($this->image_library === 'imagemagick' OR $this->image_library === 'netpbm')
{
$protocol = 'image_process_'.$this->image_library;
return $this->$protocol('rotate');
}
return ($this->rotation_angle === 'hor' OR $this->rotation_angle === 'vrt')
? $this->image_mirror_gd()
: $this->image_rotate_gd();
}
// --------------------------------------------------------------------
/**
* Image Process Using GD/GD2
*
* This function will resize or crop
*
* @param string
* @return bool
*/
public function image_process_gd($action = 'resize')
{
$v2_override = FALSE;
// If the target width/height match the source, AND if the new file name is not equal to the old file name
// we'll simply make a copy of the original with the new name... assuming dynamic rendering is off.
if ($this->dynamic_output === FALSE && $this->orig_width === $this->width && $this->orig_height === $this->height)
{
if ($this->source_image !== $this->new_image && @copy($this->full_src_path, $this->full_dst_path))
{
chmod($this->full_dst_path, $this->file_permissions);
}
return TRUE;
}
// Let's set up our values based on the action
if ($action === 'crop')
{
// Reassign the source width/height if cropping
$this->orig_width = $this->width;
$this->orig_height = $this->height;
// GD 2.0 has a cropping bug so we'll test for it
if ($this->gd_version() !== FALSE)
{
$gd_version = str_replace('0', '', $this->gd_version());
$v2_override = ($gd_version == 2);
}
}
else
{
// If resizing the x/y axis must be zero
$this->x_axis = 0;
$this->y_axis = 0;
}
// Create the image handle
if ( ! ($src_img = $this->image_create_gd()))
{
return FALSE;
}
/* Create the image
*
* Old conditional which users report cause problems with shared GD libs who report themselves as "2.0 or greater"
* it appears that this is no longer the issue that it was in 2004, so we've removed it, retaining it in the comment
* below should that ever prove inaccurate.
*
* if ($this->image_library === 'gd2' && function_exists('imagecreatetruecolor') && $v2_override === FALSE)
*/
if ($this->image_library === 'gd2' && function_exists('imagecreatetruecolor'))
{
$create = 'imagecreatetruecolor';
$copy = 'imagecopyresampled';
}
else
{
$create = 'imagecreate';
$copy = 'imagecopyresized';
}
$dst_img = $create($this->width, $this->height);
if ($this->image_type === 3) // png we can actually preserve transparency
{
imagealphablending($dst_img, FALSE);
imagesavealpha($dst_img, TRUE);
}
$copy($dst_img, $src_img, 0, 0, $this->x_axis, $this->y_axis, $this->width, $this->height, $this->orig_width, $this->orig_height);
// Show the image
if ($this->dynamic_output === TRUE)
{
$this->image_display_gd($dst_img);
}
elseif ( ! $this->image_save_gd($dst_img)) // Or save it
{
return FALSE;
}
// Kill the file handles
imagedestroy($dst_img);
imagedestroy($src_img);
chmod($this->full_dst_path, $this->file_permissions);
return TRUE;
}
// --------------------------------------------------------------------
/**
* Image Process Using ImageMagick
*
* This function will resize, crop or rotate
*
* @param string
* @return bool
*/
public function image_process_imagemagick($action = 'resize')
{
// Do we have a vaild library path?
if ($this->library_path === '')
{
$this->set_error('imglib_libpath_invalid');
return FALSE;
}
if ( ! preg_match('/convert$/i', $this->library_path))
{
$this->library_path = rtrim($this->library_path, '/').'/convert';
}
// Execute the command
$cmd = $this->library_path.' -quality '.$this->quality;
if ($action === 'crop')
{
$cmd .= ' -crop '.$this->width.'x'.$this->height.'+'.$this->x_axis.'+'.$this->y_axis.' "'.$this->full_src_path.'" "'.$this->full_dst_path .'" 2>&1';
}
elseif ($action === 'rotate')
{
$angle = ($this->rotation_angle === 'hor' OR $this->rotation_angle === 'vrt')
? '-flop' : '-rotate '.$this->rotation_angle;
$cmd .= ' '.$angle.' "'.$this->full_src_path.'" "'.$this->full_dst_path.'" 2>&1';
}
else // Resize
{
if($this->maintain_ratio === TRUE)
{
$cmd .= ' -resize '.$this->width.'x'.$this->height.' "'.$this->full_src_path.'" "'.$this->full_dst_path.'" 2>&1';
}
else
{
$cmd .= ' -resize '.$this->width.'x'.$this->height.'\! "'.$this->full_src_path.'" "'.$this->full_dst_path.'" 2>&1';
}
}
$retval = 1;
// exec() might be disabled
if (function_usable('exec'))
{
@exec($cmd, $output, $retval);
}
// Did it work?
if ($retval > 0)
{
$this->set_error('imglib_image_process_failed');
return FALSE;
}
chmod($this->full_dst_path, $this->file_permissions);
return TRUE;
}
// --------------------------------------------------------------------
/**
* Image Process Using NetPBM
*
* This function will resize, crop or rotate
*
* @param string
* @return bool
*/
public function image_process_netpbm($action = 'resize')
{
if ($this->library_path === '')
{
$this->set_error('imglib_libpath_invalid');
return FALSE;
}
// Build the resizing command
switch ($this->image_type)
{
case 1 :
$cmd_in = 'giftopnm';
$cmd_out = 'ppmtogif';
break;
case 2 :
$cmd_in = 'jpegtopnm';
$cmd_out = 'ppmtojpeg';
break;
case 3 :
$cmd_in = 'pngtopnm';
$cmd_out = 'ppmtopng';
break;
}
if ($action === 'crop')
{
$cmd_inner = 'pnmcut -left '.$this->x_axis.' -top '.$this->y_axis.' -width '.$this->width.' -height '.$this->height;
}
elseif ($action === 'rotate')
{
switch ($this->rotation_angle)
{
case 90: $angle = 'r270';
break;
case 180: $angle = 'r180';
break;
case 270: $angle = 'r90';
break;
case 'vrt': $angle = 'tb';
break;
case 'hor': $angle = 'lr';
break;
}
$cmd_inner = 'pnmflip -'.$angle.' ';
}
else // Resize
{
$cmd_inner = 'pnmscale -xysize '.$this->width.' '.$this->height;
}
$cmd = $this->library_path.$cmd_in.' '.$this->full_src_path.' | '.$cmd_inner.' | '.$cmd_out.' > '.$this->dest_folder.'netpbm.tmp';
$retval = 1;
// exec() might be disabled
if (function_usable('exec'))
{
@exec($cmd, $output, $retval);
}
// Did it work?
if ($retval > 0)
{
$this->set_error('imglib_image_process_failed');
return FALSE;
}
// With NetPBM we have to create a temporary image.
// If you try manipulating the original it fails so
// we have to rename the temp file.
copy($this->dest_folder.'netpbm.tmp', $this->full_dst_path);
unlink($this->dest_folder.'netpbm.tmp');
chmod($this->full_dst_path, $this->file_permissions);
return TRUE;
}
// --------------------------------------------------------------------
/**
* Image Rotate Using GD
*
* @return bool
*/
public function image_rotate_gd()