1: <?php
 2: /**
 3:  * Wei Framework
 4:  *
 5:  * @copyright   Copyright (c) 2008-2013 Twin Huang
 6:  * @license     http://opensource.org/licenses/mit-license.php MIT License
 7:  */
 8: 
 9: namespace Wei\Validator;
10: 
11: /**
12:  * Check if the input is valid image
13:  *
14:  * @author      Twin Huang <twinhuang@qq.com>
15:  */
16: class Image extends File
17: {
18:     protected $notDetectedMessage = '%name% is not a valid image or the size of the image could not be detected';
19: 
20:     protected $widthTooBigMessage = '%name% width is too big (%width%px), allowed maximum width is %maxWidth%px';
21: 
22:     protected $widthTooSmallMessage = '%name% width is too small (%width%px), expected minimum width is %minWidth%px';
23: 
24:     protected $heightTooBigMessage = '%name% height is too big (%height%px), allowed maximum height is %maxHeight%px';
25: 
26:     protected $heightTooSmallMessage = '%name% height is too small (%height%px), expected minimum height is %minHeight%px';
27: 
28:     protected $maxWidth;
29: 
30:     protected $minWidth;
31: 
32:     protected $maxHeight;
33: 
34:     protected $minHeight;
35: 
36:     /**
37:      * The detected width of image
38:      *
39:      * @var int
40:      */
41:     protected $width;
42: 
43:     /**
44:      * The detected height of image
45:      *
46:      * @var int
47:      */
48:     protected $height;
49: 
50:     /**
51:      * {@inheritdoc}
52:      */
53:     protected function doValidate($input)
54:     {
55:         parent::doValidate($input);
56:         if ($this->hasError('notString') || $this->hasError('notFound')) {
57:             return false;
58:         }
59: 
60:         // Receive the real file path resolved by parent class
61:         $file = $this->file;
62: 
63:         $size = @getimagesize($file);
64:         if (false === $size) {
65:             $this->addError('notDetected');
66:             return false;
67:         }
68: 
69:         $this->width = $size[0];
70:         $this->height = $size[1];
71: 
72:         if ($this->maxWidth && $this->maxWidth < $this->width) {
73:             $this->addError('widthTooBig');
74:         }
75: 
76:         if ($this->minWidth && $this->minWidth > $this->width) {
77:             $this->addError('widthTooSmall');
78:         }
79: 
80:         if ($this->maxHeight && $this->maxHeight < $this->height) {
81:             $this->addError('heightTooBig');
82:         }
83: 
84:         if ($this->minHeight && $this->minHeight > $this->height) {
85:             $this->addError('heightTooSmall');
86:         }
87: 
88:         return !$this->errors;
89:     }
90: }
91: