1: <?php
 2: /**
 3:  * ImageGenerator to create a square thumbnail.
 4:  *
 5:  * Copyright 2010-2012 Horde LLC (http://www.horde.org/)
 6:  *
 7:  * See the enclosed file COPYING for license information (GPL). If you
 8:  * did not receive this file, see http://www.horde.org/licenses/gpl.
 9:  *
10:  * @author Michael J. Rubinsky <mrubinsk@horde.org>
11:  * @package Ansel
12:  */
13: class Ansel_ImageGenerator_SquareThumb extends Ansel_ImageGenerator
14: {
15:     public function __construct($params)
16:     {
17:         parent::__construct($params);
18:         $this->title = _("Square Thumbnails");
19:         if (empty($this->_params['width'])) {
20:             $this->_params['width'] = $this->_style->width;
21:         }
22:         if (empty($this->_params['height'])) {
23:             $this->_params['height'] = $this->_style->height;
24:         }
25:     }
26: 
27:     /**
28:      *
29:      * @return Horde_Image
30:      */
31:     protected function _create()
32:     {
33:         // Take the largest requested dimension
34:         if (empty($this->_params['width'])) {
35:             $size = min($GLOBALS['conf']['thumbnail']['height'], $GLOBALS['conf']['thumbnail']['width']);
36:         } else {
37:             $size = min($this->_params['width'], $this->_params['height']);
38:         }
39: 
40:         // Use smartcrop algorithm if we have it, otherwise a plain center crop.
41:         if (Ansel::isAvailable('SmartCrop') && $GLOBALS['conf']['image']['smartcrop']) {
42:             $this->_image->addEffect('SmartCrop', array('width' => $size, 'height' => $size));
43:         } else {
44:             $this->_image->addEffect('CenterCrop', array('width' => $size, 'height' => $size));
45:         }
46:         $this->_image->applyEffects();
47: 
48:         if ($GLOBALS['conf']['thumbnail']['unsharp'] && Ansel::isAvailable('Unsharpmask')) {
49:             try {
50:                 $this->_image->addEffect('Unsharpmask',
51:                                          array('radius' => $GLOBALS['conf']['thumbnail']['radius'],
52:                                                'threshold' => $GLOBALS['conf']['thumbnail']['threshold'],
53:                                                'amount' => $GLOBALS['conf']['thumbnail']['amount']));
54:                 $this->_image->applyEffects();
55:             } catch (Horde_Image_Exception $e) {
56:                 throw new Ansel_Exception($e);
57:             }
58:         }
59: 
60:         return $this->_image->getHordeImage();
61:     }
62: 
63: }
64: