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<?php
App::uses('FileStorage', 'FileStorage.Model');
App::uses('Folder', 'Utility');
/**
* Image
*
* @author Florian Kr�mer
* @copyright 2012 Florian Kr�mer
* @license MIT
*/
class ImageStorage extends FileStorage {
/**
* Table to use
*
* @var mixed
*/
public $useTable = 'file_storage';
/**
* Behaviours
*
* @var array
*/
public $actsAs = array(
'Imagine.Imagine',
'FileStorage.UploadValidator' => array(
'localFile' => true,
'validate' => false,
'allowedExtensions' => array('jpg', 'jpeg', 'png', 'gif')
),
);
/**
* Getter
*
* @param string $name
* @return void
*/
public function __get($name) {
if ($name === 'createVersions') {
throw new \RuntimeException(__d('file_storage', 'createVersions was removed, see the change log'));
}
}
/**
* beforeSave callback
*
* @param array $options
* @return boolean true on success
*/
public function beforeSave($options = array()) {
if (!parent::beforeSave($options)) {
return false;
}
$Event = new CakeEvent('ImageStorage.beforeSave', $this, array(
'record' => $this->data));
CakeEventManager::instance()->dispatch($Event);
if ($Event->isStopped()) {
return false;
}
return true;
}
/**
* afterSave callback
*
* Does not call the parent to avoid that the regular file storage event listener saves the image already
*
* @param boolean
* @return void
*/
public function afterSave($created) {
if ($created) {
$this->data[$this->alias][$this->primaryKey] = $this->getLastInsertId();
$Event = new CakeEvent('ImageStorage.afterSave', $this, array(
'created' => $created,
'storage' => StorageManager::adapter($this->data[$this->alias]['adapter']),
'record' => $this->data));
CakeEventManager::instance()->dispatch($Event);
}
}
/**
* Get a copy of the actual record before we delete it to have it present in afterDelete
*
* @param boolean $cascade
* @return boolean
*/
public function beforeDelete($cascade = true) {
if (!parent::beforeDelete($cascade)) {
return false;
}
$Event = new CakeEvent('ImageStorage.beforeDelete', $this, array(
'record' => $this->record,
'storage' => StorageManager::adapter($this->record[$this->alias]['adapter'])));
CakeEventManager::instance()->dispatch($Event);
if ($Event->isStopped()) {
return false;
}
return true;
}
/**
* After the main file was deleted remove the the thumbnails
*
* Note that we do not call the parent::afterDelete(), we just want to trigger the ImageStorage.afterDelete event but not the FileStorage.afterDelete at the same time!
*
* @return void
*/
public function afterDelete() {
$Event = new CakeEvent('ImageStorage.afterDelete', $this, array(
'record' => $this->record,
'storage' => StorageManager::adapter($this->record[$this->alias]['adapter'])));
CakeEventManager::instance()->dispatch($Event);
}
/**
* Serializes and then hashes an array of operations that are applied to an image
*
* @param array $operations
* @return array
*/
public function hashOperations($operations) {
$this->ksortRecursive($operations);
return substr(md5(serialize($operations)), 0, 8);
}
/**
* Generate hashes
*
* @param string
* @return void
*/
public function generateHashes($configPath = 'Media') {
$imageSizes = Configure::read($configPath . '.imageSizes');
$this->ksortRecursive($imageSizes);
foreach ($imageSizes as $model => $version) {
foreach ($version as $name => $operations) {
Configure::write($configPath . '.imageHashes.' . $model . '.' . $name, $this->hashOperations($operations));
}
}
}
/**
* @deperacted This has been replaced by Events
* @throws InternalErrorException
*/
public function createVersions($data = array(), $format = 'jpg') {
throw new InternalErrorException(__('file_storage', 'ImageStorage::createVersions is deprecated use the event system.'));
}
/**
* Recursive ksort() implementation
*
* @param array $array
* @param integer
* @return void
* @link https://gist.github.com/601849
*/
public function ksortRecursive(&$array, $sortFlags = SORT_REGULAR) {
if (!is_array($array)) return false;
ksort($array, $sortFlags);
foreach ($array as &$arr) {
$this->ksortRecursive($arr, $sortFlags);
}
return true;
}
/**
* Image size validation method
*
* @param mixed $check
* @param array $options is an array with key width or height and a value of array
* with two options, operator and value. For example:
* array('height' => array('==', 100)) will only be true if the image has a
* height of exactly 100px. See the CakePHP core class and method
* Validation::comparison for all operators.
* @return boolean true
* @see Validation::comparison()
* @throws \InvalidArgumentException
*/
public function validateImageSize($check, $options) {
if (!isset($options['height']) && !isset($options['width'])) {
throw new \InvalidArgumentException(__d('file_storage', 'Invalid image size validation parameters'));
}
if (is_string($check)) {
$imageFile = $check;
} else {
$check = array_values($check);
$check = $check[0];
if (is_array($check) && isset($check['tmp_name'])) {
$imageFile = $check['tmp_name'];
} else {
$imageFile = $check;
}
}
$imageSizes = $this->getImageSize($imageFile);
if (isset($options['height'])) {
$height = Validation::comparison($imageSizes[1], $options['height'][0], $options['height'][1]);
} else {
$height = true;
}
if (isset($options['width'])) {
$width = Validation::comparison($imageSizes[0], $options['width'][0], $options['width'][1]);
} else {
$width = true;
}
if ($height === false || $width === false) {
return false;
}
return true;
}
}