-
Notifications
You must be signed in to change notification settings - Fork 1
/
imageclass.php
133 lines (98 loc) · 3.97 KB
/
imageclass.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
<?php
require_once($CFG->libdir . '/gdlib.php');
define('THUMBNAIL_WIDTH', 120);
define('THUMBNAIL_HEIGHT', 105);
class lightboxgallery_edit_image {
var $filename;
var $image;
var $width;
var $height;
var $type;
function error($text) {
debugging($text, DEBUG_DEVELOPER);
return false;
}
function lightboxgallery_edit_image($filename) {
$this->filename = $filename;
if (file_exists($filename)) {
$info = getimagesize($filename);
$supportedtypes = array(IMAGETYPE_GIF => 'gif', IMAGETYPE_JPEG => 'jpeg', IMAGETYPE_PNG => 'png');
$this->width = $info[0];
$this->height = $info[1];
if (in_array($info[2], array_keys($supportedtypes))) {
$this->type = $supportedtypes[$info[2]];
} else {
$this->type = '';
}
$function = 'imagecreatefrom' . $this->type;
if (function_exists($function)) {
if (! $this->image = $function($filename)) {
$this->error("Couldn't create image");
}
}
} else {
$this->error("Input file doesn't exist");
}
}
function create_new_image($width, $height) {
global $CFG;
if (function_exists('imagecreatetruecolor') && $CFG->gdversion >= 2) {
return imagecreatetruecolor($width, $height);
} else {
return imagecreate($width, $height);
}
}
function resize($width, $height, $offsetx = 0, $offsety = 0, $return = false) {
$resized = $this->create_new_image($width, $height);
$cx = $this->width / 2;
$cy = $this->height / 2;
$ratiow = $width / $this->width;
$ratioh = $height / $this->height;
if ($ratiow < $ratioh) {
$srcw = floor($width / $ratioh);
$srch = $this->height;
$srcx = floor($cx - ($srcw / 2)) + $offsetx;
$srcy = $offsety;
} else {
$srcw = $this->width;
$srch = floor($height / $ratiow);
$srcx = $offsetx;
$srcy = floor($cy - ($srch / 2)) + $offsety;
}
imagecopybicubic($resized, $this->image, 0, 0, $srcx, $srcy, $width, $height, $srcw, $srch);
return ($return ? $resized : $this->save_image($resized));
}
function create_thumbnail($offsetx = 0, $offsety = 0) {
global $CFG;
$thumbdir = dirname($this->filename) . '/_thumb/';
$thumbfile = $thumbdir . basename($this->filename) . '.jpg';
umask(0000);
if (! file_exists($thumbdir) && ! @mkdir($thumbdir, $CFG->directorypermissions)) {
return $this->error("Couldn't create thumbnail directory");
}
if (! @touch($thumbfile)) {
return $this->error("Couldn't create thumbnail image");
}
$thumb = $this->resize(THUMBNAIL_WIDTH, THUMBNAIL_HEIGHT, $offsetx, $offsety, true);
if ($result = $this->save_image($thumb, $thumbfile, 'jpeg')) {
@chmod($thumbfile, 0666);
}
return $result;
}
function save_image($image, $filename = '', $type = '') {
if (empty($filename)) {
$filename = $this->filename;
}
if (empty($type)) {
$type = $this->type;
}
$function = 'image' . $type;
if (function_exists($function) && @$function($image, $filename, ($type == 'png' ? 9 : 100))) {
imagedestroy($image);
return true;
} else {
return $this->error("Couldn't write image");
}
}
}
?>