1: <?php
  2: /**
  3:  * Magento
  4:  *
  5:  * NOTICE OF LICENSE
  6:  *
  7:  * This source file is subject to the Open Software License (OSL 3.0)
  8:  * that is bundled with this package in the file LICENSE.txt.
  9:  * It is also available through the world-wide-web at this URL:
 10:  * http://opensource.org/licenses/osl-3.0.php
 11:  * If you did not receive a copy of the license and are unable to
 12:  * obtain it through the world-wide-web, please send an email
 13:  * to license@magentocommerce.com so we can send you a copy immediately.
 14:  *
 15:  * DISCLAIMER
 16:  *
 17:  * Do not edit or add to this file if you wish to upgrade Magento to newer
 18:  * versions in the future. If you wish to customize Magento for your
 19:  * needs please refer to http://www.magentocommerce.com for more information.
 20:  *
 21:  * @category    Mage
 22:  * @package     Mage_Media
 23:  * @copyright   Copyright (c) 2012 Magento Inc. (http://www.magentocommerce.com)
 24:  * @license     http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
 25:  */
 26: 
 27: 
 28: /**
 29:  * Media library file image resource model
 30:  *
 31:  * @category   Mage
 32:  * @package    Mage_Media
 33:  * @author      Magento Core Team <core@magentocommerce.com>
 34:  */
 35: class Mage_Media_Model_File_Image extends Mage_Core_Model_Resource_Abstract
 36: {
 37:     /**
 38:      * Resource initialization
 39:      */
 40:     protected function _construct()
 41:     {
 42:         return $this;
 43:     }
 44: 
 45:     /**
 46:      * Retrieve connection for read data
 47:      */
 48:     protected function _getReadAdapter()
 49:     {
 50:         return false;
 51:     }
 52: 
 53:     /**
 54:      * Retrieve connection for write data
 55:      */
 56:     protected function _getWriteAdapter()
 57:     {
 58:         return false;
 59:     }
 60: 
 61:     public function load(Mage_Media_Model_Image $object, $file, $field=null)
 62:     {
 63:         // Do some implementation
 64:         return $this;
 65:     }
 66: 
 67:     public function save(Mage_Media_Model_Image $object)
 68:     {
 69:         // Do some implementation
 70:         return $this;
 71:     }
 72: 
 73:     public function delete(Mage_Media_Model_Image $object)
 74:     {
 75:         return $this;
 76:     }
 77: 
 78:     /**
 79:      * Create image resource for operation from file
 80:      *
 81:      * @param Mage_Media_Model_Image $object
 82:      * @return Mage_Media_Model_File_Image
 83:      */
 84:     public function getImage(Mage_Media_Model_Image $object)
 85:     {
 86:         $resource = false;
 87:         switch(strtolower($object->getExtension())) {
 88:             case 'jpg':
 89:             case 'jpeg':
 90:                 $resource = imagecreatefromjpeg($object->getFilePath());
 91:                 break;
 92: 
 93:             case 'gif':
 94:                 $resource = imagecreatefromgif($object->getFilePath());
 95:                 break;
 96: 
 97:             case 'png':
 98:                 $resource = imagecreatefrompng($object->getFilePath());
 99:                 break;
100:         }
101: 
102:         if(!$resource) {
103:             Mage::throwException(Mage::helper('media')->__('The image does not exist or is invalid.'));
104:         }
105: 
106: 
107:         return $resource;
108:     }
109: 
110:     /**
111:      * Create tmp image resource for operations
112:      *
113:      * @param Mage_Media_Model_Image $object
114:      * @return Mage_Media_Model_File_Image
115:      */
116:     public function getTmpImage(Mage_Media_Model_Image $object)
117:     {
118:         $resource = imagecreatetruecolor($object->getDestanationDimensions()->getWidth(), $object->getDestanationDimensions()->getHeight());
119:         return $resource;
120:     }
121: 
122:     /**
123:      * Resize image
124:      *
125:      * @param Mage_Media_Model_Image $object
126:      * @return Mage_Media_Model_File_Image
127:      */
128:     public function resize(Mage_Media_Model_Image $object)
129:     {
130:         $tmpImage = $object->getTmpImage();
131:         $sourceImage = $object->getImage();
132: 
133:         imagecopyresampled(
134:             $tmpImage,
135:             $sourceImage,
136:             0, 0, 0, 0,
137:             $object->getDestanationDimensions()->getWidth(),
138:             $object->getDestanationDimensions()->getHeight(),
139:             $object->getDimensions()->getWidth(),
140:             $object->getDimensions()->getHeight()
141:         );
142: 
143:         return $this;
144:     }
145: 
146:     /**
147:      * Add watermark for image
148:      *
149:      * @param Mage_Media_Model_Image $object
150:      * @return Mage_Media_Model_File_Image
151:      */
152:     public function watermark(Mage_Media_Model_Image $object)
153:     {
154:         return $this;
155:     }
156: 
157:     /**
158:      * Creates image
159:      *
160:      * @param Mage_Media_Model_Image $object
161:      * @param string|null $extension
162:      * @return Mage_Media_Model_File_Image
163:      */
164:     public function saveAs(Mage_Media_Model_Image $object, $extension=null)
165:     {
166:         if(is_null($extension)) {
167:             $extension = $object->getExtension();
168:         }
169: 
170:         $result = false;
171:         switch (strtolower($extension)) {
172:             case 'jpg':
173:             case 'jpeg':
174:                 $result = imagejpeg($object->getTmpImage(), $object->getFilePath(true), 80);
175:                 break;
176:             case 'gif':
177:                 $result = imagegif($object->getTmpImage(), $object->getFilePath(true));
178:                 break;
179:             case 'png':
180:                 $result = imagepng($object->getTmpImage(), $object->getFilePath(true));
181:                 break;
182:         }
183: 
184:         if(!$result) {
185:             Mage::throwException(Mage::helper('media')->__('An error occurred while creating the image.'));
186:         }
187: 
188:         return $this;
189:     }
190: 
191:     /**
192:      * Retrive image dimensions
193:      *
194:      * @param Mage_Media_Model_Image $object
195:      * @return Varien_Object
196:      */
197:     public function getDimensions(Mage_Media_Model_Image $object)
198:     {
199:         $info = @getimagesize($object->getFilePath());
200:         if(!$info) {
201:             Mage::throwException(Mage::helper('media')->__('The image does not exist or is invalid.'));
202:         }
203: 
204:         $info = array('width'=>$info[0], 'height'=>$info[1], 'type'=>$info[2]);
205:         return new Varien_Object($info);
206:     }
207: 
208:     /**
209:      * Destroys resource object
210:      *
211:      * @param resource $resource
212:      */
213:     public function destroyResource(&$resource)
214:     {
215:         imagedestroy($resource);
216:         return $this;
217:     }
218: 
219:     /**
220:      * Destroys resource object
221:      *
222:      * @param resource $resource
223:      */
224:     public function hasSpecialImage(Mage_Media_Model_Image $object)
225:     {
226:         if(file_exists($object->getFilePath(true))) {
227:             return true;
228:         }
229: 
230:         return false;
231:     }
232: 
233: 
234: }
235: