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
|
<?php
// EasyGiant, a web software to build a community of people that want to share their hardware information.
// Copyright (C) 2009 - 2010 Antonio Gallo (h-source-copyright.txt)
//
// This file is part of EasyGiant
//
// EasyGiant is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// EasyGiant is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with EasyGiant. If not, see <http://www.gnu.org/licenses/>.
if (!defined('EG')) die('Direct access not allowed!');
//class to create a thumbnail
class Image_Gd_Thumbnail
{
const DS = DIRECTORY_SEPARATOR;
private $params = array(); //parameters of the object
private $basePath = null; //the path of the folder inside which the images are saved
public function __construct($basePath,$params = null)
{
$finalChar = $basePath[strlen($basePath) - 1];
if (strcmp($finalChar,self::DS) !== 0) $basePath .= self::DS;
$this->basePath = $basePath;
$defaultParams = array(
'imgWidth' => 100,
'imgHeight' => 100,
'defaultImage' => null,
'cropImage' => 'no',
'horizAlign' => 'left',
'vertAlign' => 'top',
'resample' => 'yes',
'function' => 'none',
);
//set the $this->scaffold->params array
if (is_array($params))
{
foreach ($params as $key => $value)
{
$defaultParams[$key] = $value;
}
}
$this->params = $defaultParams;
}
//create the thumbnail
//$imageName: the name of the file inside $this->basePath
public function render($imageFile)
{
$imagePath = $this->basePath . basename($imageFile);
if (!file_exists($imagePath) and isset($this->params['defaultImage'])) $imagePath = $this->params['defaultImage'];
$img = null;
$ext = strtolower(end(explode('.', $imagePath)));
if (strcmp($ext,'jpg') === 0 or strcmp($ext,'jpeg') === 0) {
$img = @imagecreatefromjpeg($imagePath);
} else if (strcmp($ext,'png') === 0) {
$img = @imagecreatefrompng($imagePath);
} else if (strcmp($ext,'gif') === 0) {
$img = @imagecreatefromgif($imagePath);
}
//If an image was successfully loaded, test the image for size
if ($img) {
//image size
$width = imagesx($img);
$height = imagesy($img);
if ($this->params['cropImage'] === 'no')
{
$scale = min($this->params['imgWidth']/$width, $this->params['imgHeight']/$height);
}
else if ($this->params['cropImage'] === 'yes')
{
$scale = max($this->params['imgWidth']/$width, $this->params['imgHeight']/$height);
}
if ($scale < 1) {
$xSrc = 0;
$ySrc = 0;
if ($this->params['cropImage'] === 'no')
{
$newWidth = floor($scale*$width);
$newHeight = floor($scale*$height);
}
else if ($this->params['cropImage'] === 'yes')
{
$newWidth = $this->params['imgWidth'];
$newHeight = $this->params['imgHeight'];
$oldWidth = $width;
$oldHeight = $height;
$width = floor($newWidth/$scale);
$height = floor($newHeight/$scale);
switch ($this->params['horizAlign'])
{
case 'left':
$xSrc = 0;
break;
case 'right':
$xSrc = floor(($oldWidth-$width));
break;
case 'center':
$xSrc = floor(($oldWidth-$width)/2);
break;
default:
$xSrc = $this->params['horizAlign'];
}
switch ($this->params['vertAlign'])
{
case 'top':
$ySrc = 0;
break;
case 'bottom':
$ySrc = floor(($oldHeight-$height));
break;
case 'center':
$ySrc = floor(($oldHeight-$height)/2);
break;
default:
$ySrc = $this->params['vertAlign'];
}
}
//temp image
$tmpImg = imagecreatetruecolor($newWidth, $newHeight);
if ($this->params['resample'] === 'yes')
{
//copy and resample
imagecopyresampled($tmpImg, $img, 0, 0, $xSrc, $ySrc,$newWidth, $newHeight, $width, $height);
}
else
{
//copy and resize
imagecopyresized($tmpImg, $img, 0, 0, $xSrc, $ySrc,$newWidth, $newHeight, $width, $height);
}
imagedestroy($img);
$img = $tmpImg;
if (!function_exists($this->params['function'])) {
throw new Exception('Error in <b>'.__METHOD__.'</b>: function <b>'.$this->params['function']. '</b> does not exist');
}
$img = call_user_func($this->params['function'],$img);
}
}
if (!$img) {
$img = imagecreate($this->params['imgWidth'], $this->params['imgHeight']);
imagecolorallocate($img,200,200,200);
}
//print the image
header("Content-type: image/jpeg");
imagejpeg($img,null,90);
}
}
|
