/**
* Creates an instance defining the cache directory
*
* @param string $file file to be handled
* @param int $w image width
* @param int $h imege height
*
* @return ImageHandler
*/
private function _createInstance($file, $w = null, $h = null)
{
$full_file_path = $this->_public_dir . $file;
$image = new ImageHandler($full_file_path, $w, $h);
$image->setCacheDir($this->_cache_dir);
$image->setFileCallback(function ($full_file_path) {
$relative_file_path = str_replace($this->_public_dir, '', $full_file_path);
return $relative_file_path;
});
return $image;
}
