<?php 
  /** 
   * @package Related News 
   * @version 2.5 
   * @licensehttp://www.gnu.org/licenses/gpl-2.0.html GNU/GPL 
   * @copyright (c) 2012 YouTech Company. All Rights Reserved. 
   * @author YouTech Companyhttp://www.smartaddons.com 
   * 
   */ 
  defined('_JEXEC') or die; 
   
  class ImageHelper{ 
  	protected static $instances = array(); 
  	protected static $defaults = array( 
  			'type' => null, 
  			'width' => null, 
  			'height' => null, 
  			'quality' => 90, 
  			'function' => null, 
  			'function_mode' => null, 
  			'transparency' => true, 
  			'background' => array('r'=>255, 'g'=>255, 'b'=>255), 
  			'cache' => null, 
  			'cache_url' => null 
  	); 
  	public static $supports = array( 
  			IMAGETYPE_PNG, 
  			IMAGETYPE_GIF, 
  			IMAGETYPE_JPEG 
  	); 
  	public static $functions = array( 
  			'resize', 
  			'crop', 
  			'rotate', 
  			'flip_horizontal', 
  			'flip_vertical' 
  	); 
  	public static $modes = array( 
  			'center', 
  			'fill', 
  			'fit', 
  			'stretch' 
  	); 
   
  	protected $image = null; 
  	protected $in = null; 
  	protected $out = null; 
  	protected $errors = array(); 
  	protected $options = null; 
  	protected $_process = 1; 
  	protected $debug = false; 
  	/** 
  	 * 
  	 * @param mixed $image 
  	 * @param array $options 
  	 * @return ImageHelper 
  	 */ 
  	public static function init($image, $options = array()){ 
  		$cacheid = count(self::$instances); 
  		if (!isset(self::$instances[$cacheid])){ 
  			self::$instances[$cacheid] = new ImageHelper($image, $options); 
  		} 
  		return self::$instances[$cacheid]; 
  	} 
   
  	/** 
  	 * ImageHelper constructor 
  	 * @param unknown_type $image 
  	 * @param unknown_type $options 
  	 */ 
  	public function __construct($image = null, $options = array()){ 
  		!is_null($image) && $this->image = $image; 
   
  		// defaults 
  		foreach (ImageHelper::$defaults as $name => $value){ 
  			$this->options[$name] = array_key_exists($name, $options) ? $options[$name] : $value; 
  		} 
  		$this->in = array( 
  				'type'=>null, 
  				'src' =>null 
  		); 
  		$this->out = array(); 
  		$this->debug && JFactory::getApplication()->enqueueMessage('ImageHelper::__construct'); 
  	} 
   
  	public static function setDefault($_params = null){ 
  		self::$defaults = array( 
  				'type' => null, 
  				'width' => null, 
  				'height' => null, 
  				'quality' => 90, 
  				'function' => null, 
  				'function_mode' => null, 
  				'transparency' => true, 
  				'background' => array('r'=>255, 'g'=>255, 'b'=>255), 
  				'cache' => null, 
  				'cache_url' => null 
  		); 
   
  		if ($_params instanceof JRegistry){ 
  			$opts = array(); 
   
  			// output type ? 
  			$imgcfg_type = $_params->get('imgcfg_type', 0); 
  			if (in_array($imgcfg_type, array(IMAGETYPE_JPEG, IMAGETYPE_PNG, IMAGETYPE_GIF))){ 
  				$opts['type'] = $imgcfg_type; 
  			} 
   
  			// function ? 
  			$imgcfg_fn = $_params->get('imgcfg_function', 'none_resize'); 
  			$imgcfg_fn = explode('_', $imgcfg_fn); 
  			if ( in_array($imgcfg_fn[0], self::$functions) ){ 
  				$opts['function'] = $imgcfg_fn[0]; 
  				if ($imgcfg_fn[0] == 'resize'){ 
  					if ( isset($imgcfg_fn[1]) && in_array($imgcfg_fn[1], self::$modes) ){ 
  						$opts['function_mode'] = $imgcfg_fn[1]; 
  					} else { 
  						$opts['function_mode'] = self::$modes[2]; 
  					} 
  				} 
   
  			} 
   
  			// background 
  			$imgcfg_background = $_params->get('imgcfg_background', null); 
  			if (!is_null($imgcfg_background)){ 
  				$opts['background'] = $imgcfg_background; 
  			} 
   
  			// quality 
  			$imgcfg_quality = $_params->get('imgcfg_quality', null); 
  			if ( $imgcfg_quality != null && intval($imgcfg_quality) > 0 && intval($imgcfg_quality) < 100 ){ 
  				$opts['quality'] = intval($imgcfg_quality); 
  			} 
   
  			// transparency 
  			$imgcfg_transparency = $_params->get('imgcfg_transparency', 1); 
  			if ( $imgcfg_transparency != null){ 
  				$opts['transparency'] = $imgcfg_transparency ? true : false; 
  			} 
   
  			// dimension ? 
  			$imgcfg_w = $_params->get('imgcfg_width', 0); 
  			$imgcfg_h = $_params->get('imgcfg_height', 0); 
  			if ( intval($imgcfg_w) > 0 ){ 
  				$opts['width'] = $imgcfg_w; 
  			} 
  			if ( intval($imgcfg_h) > 0 ){ 
  				$opts['height'] = $imgcfg_h; 
  			} 
   
  			// cache ? 
  			if ( defined('JPATH_CACHE') ){ 
  				$cache_path_default = JPATH_CACHE.'/resized'; 
  				$cache_path_url_default = 'cache/resized/'; 
  			} else { 
  				$cache_path_default = null; 
  				$cache_path_url_default = null; 
  			} 
  			$cache_path = $_params->get('imgcfg_cache', $cache_path_default); 
  			$cache_url  = $_params->get('imgcfg_cache_url', $cache_path_url_default); 
  			if ($cache_path) $opts['cache'] = $cache_path; 
  			if ($cache_url) $opts['cache_url'] = $cache_url; 
   
  		} 
  		self::$defaults = array_merge(self::$defaults, $opts); 
  	} 
   
  	public static function testDefault(){ 
  		echo 'ImageHelper::$defaults'.'<br>'; 
  		var_dump(self::$defaults); 
  	} 
   
  	/** 
  	 * Get image type for input url or path of file. 
  	 * @return mixed 
  	 */ 
  	protected function getInputType(){ 
  		if ( !isset($this->in['type']) ){ 
  			$this->debug && JFactory::getApplication()->enqueueMessage('ImageHelper::getInputType'); 
  			if (is_string($this->image)){ 
  				$path = $this->image; 
  			} else { 
  				$path = @$this->image['src']; 
  			} 
   
  			if (is_string($path)){ 
  				$ps = JString::parse_url($path); 
  				if ( array_key_exists('path', $ps) && !empty($ps['path']) ){ 
  					$isHttp = isset($ps['scheme']) && in_array($ps['scheme'], array('http', 'https')); 
  					if (!$isHttp || JURI::isInternal($path)){ 
  						$path = $ps['path']; 
  					} else { 
  						// is extenal url. 
  						$this->in['type'] = 'url'; 
  						$this->in['src'] = $path; 
  						return $this->in['type']; 
  					} 
  				} 
  			} else if (!$path){ 
  				$this->errors[] = 'Image path must be string or stored in array_argument[src]!'; 
  			} 
  			//var_dump('Path: ', $path); 
  			if ( !file_exists($path) ){ 
  				$this->errors[] = 'Image path is not exists!'; 
  			} else { 
  				//var_dump('EXISTS'); 
  				$this->in['src'] = realpath($path); 
  				$infor = array(); 
  				if ( !function_exists('exif_imagetype') ){ 
  	$intype = exif_imagetype($path); 
  } else { 
  	$infor = getimagesize($path); 
  	$intype= @$infor[2]; 
  } 
  				} 
  				switch ($intype){ 
  					case IMAGETYPE_PNG: 
  						$this->in['type'] = IMAGETYPE_PNG; 
  						break; 
  					case IMAGETYPE_GIF: 
  						$this->in['type'] = IMAGETYPE_GIF; 
  						break; 
  					case IMAGETYPE_JPEG: 
  						$this->in['type'] = IMAGETYPE_JPEG; 
  						break; 
  					default: 
  				} 
  			} 
  		} 
  		return $this->in['type']; 
  	} 
   
  	protected function getInputResource(){ 
  		$this->debug && JFactory::getApplication()->enqueueMessage('ImageHelper::getInputResource'); 
  		//var_dump('getInputResource: '.$this->in['src']); 
  		if ( !isset($this->in['image']) ){ 
  			$intype = $this->getInputType(); 
  			switch ($intype){ 
  				case IMAGETYPE_PNG: 
  					$this->in['image'] = imagecreatefrompng($this->in['src']); 
  					break; 
  				case IMAGETYPE_GIF: 
  					$this->in['image'] = imagecreatefromgif($this->in['src']); 
  					break; 
  				case IMAGETYPE_JPEG: 
  					$this->in['image'] = imagecreatefromjpeg($this->in['src']); 
  					break; 
  				default: 
  					$this->in['image'] = null; 
  					return false; 
  			} 
  		} 
  		return is_resource($this->in['image']) ? $this->in['image'] : null; 
  	} 
   
  	protected function validOptions(){ 
  		$this->debug && JFactory::getApplication()->enqueueMessage('ImageHelper::validOptions'); 
  		// TODO: validate input 
  		$type = $this->getInputType(); 
  		$input_type_ok = ($type=='url') || in_array($type, ImageHelper::$supports); 
  		if ( !$input_type_ok ){ 
  			$this->errors[] = 'Input type is not supported!'; 
  			$this->_process = 0; 
  		} else if ($type=='url'){ 
  			$this->_process = 0; 
  		} 
   
  		// required options 
  		$output_type_ok = !is_null($this->options['type']) && in_array($this->options['type'], ImageHelper::$supports); 
  		if ( !$output_type_ok ){ 
  			if ( $input_type_ok ){ 
  				$this->options['type'] = $type; 
  			} 
  		} 
   
  		if ( !($this->options['width']>0 || $this->options['height']>0) ){ 
  			$this->errors[] = 'Output width or height must be greater than zero (>0)!'; 
  			$this->_process = 0; 
  		} 
   
  		if ( in_array($this->options['function'], ImageHelper::$functions) ){ 
  			if ($this->options['function'] == 'resize' && !in_array($this->options['function_mode'], ImageHelper::$modes)){ 
  				$this->errors[] = 'Resize mode is not valid! should be in ['.implode(', ', ImageHelper::$modes).']'; 
  				$this->_process = 0; 
  			} 
  		} else { 
  			$this->errors[] = 'Output function is not valid! should be in ['.implode(', ', ImageHelper::$functions).']'; 
  			$this->_process = 0; 
  		} 
   
  		// auto parse options 
  		if ( !isset($this->options['quality']) || !is_numeric($this->options['quality']) || $this->options['quality']==0 ){ 
  			$this->options['quality'] = 90; 
  		} else { 
  			if ($this->options['quality'] < 10){ 
  				$this->options['quality'] = 10; 
  			} 
  			if ($this->options['quality'] > 100){ 
  				$this->options['quality'] = 100; 
  			} 
  		} 
   
  		$c = &$this->options['background']; 
  		if ( is_string($this->options['background']) ){ 
  			if ( preg_match('/^#?([a-fA-F0-9]{3}|[a-fA-F0-9]{6})$/i', $this->options['background'], $m) ){ 
  				$hex = isset($m[1]) ? $m[1] : null; 
  				if (strlen($hex)==3){ 
  					$hex = $hex[0].$hex[0].$hex[1].$hex[1].$hex[2].$hex[2]; 
  				} 
  				if ($hex){ 
  					$dec = hexdec($hex); 
  					$this->options['background'] = array( 
  							'r' => 0xFF & ($dec >> 0x10), 
  							'g' => 0xFF & ($dec >> 0x8), 
  							'b' => 0xFF & $dec 
  					); 
  				} else { 
  					$this->options['background'] = null; 
  				} 
  			} else { 
  				$this->options['background'] = null; 
  			} 
  		} 
  		if ( !is_array($this->options['background']) ){ 
  			$this->options['background'] = null; 
  		} else { 
  			$valid = 1; 
  			$bg = $this->options['background']; 
  			foreach (array('r', 'g', 'b') as $e){ 
  				if ( !array_key_exists($e, $bg) || ($bg[$e]<0) || ($bg[$e]>255) ){ 
  					$valid = 0; 
  					break; 
  				} 
  			} 
  			if (!$valid){ 
  				$this->options['background'] = null; 
  			} 
  		} 
   
  		if ( !is_null($this->options['cache']) ){ 
  			if ( !@is_dir($this->options['cache']) && !@mkdir($this->options['cache']) ){ 
  				$this->options['cache'] = __DIR__.'/resized'; 
  			} 
  		} else { 
  			$this->options['cache'] = __DIR__.'/resized'; 
  		} 
  		if ( !file_exists($this->options['cache']) && !@mkdir($this->options['cache'], 0755, true) ){ 
  			$this->errors[] = 'Cache is not created!'; 
  			$this->_process = 0; 
  		} else { 
  			$this->options['cache'] = realpath($this->options['cache']); 
  		} 
   
  		return count($this->errors) == 0; 
  	} 
   
  	protected function getOutputFile(){ 
  		if ( !array_key_exists('src', $this->out) || is_null($this->out['src']) ){ 
  			$this->debug && JFactory::getApplication()->enqueueMessage('ImageHelper::getOutputFile'); 
  			$hash = md5( serialize( array($this->options, $this->in['src'], $this->in['type']) ) ); 
  			if (defined('DEBUG') && 0){ 
  				$hash = basename($this->in['src'], '.jpg'); 
  				$w = isset($this->options['width']) ? $this->options['width'] : 0; 
  				$h = isset($this->options['height']) ? $this->options['height'] : 0; 
  				$hash .= '-'.$w.'x'.$h; 
  				$hash .= '-'.$this->options['function']; 
  				$hash .= '-'.$this->options['function_mode']; 
  				$hash .= '-'.$this->options['quality']; 
  			} 
  			switch ($this->options['type']){ 
  				case IMAGETYPE_PNG: 
  					$ext = '.png'; 
  					break; 
  				case IMAGETYPE_GIF: 
  					$ext = '.gif'; 
  					break; 
  				case IMAGETYPE_JPEG: 
  					$ext = '.jpg'; 
  					break; 
  				default: 
  					$ext = image_type_to_extension($this->options['type'], true); 
  			} 
  			$this->out['src'] = $this->options['cache'].'/'.$hash.$ext; 
  			$this->debug && JFactory::getApplication()->enqueueMessage('ImageHelper::getOutputFile::::'.$this->out['src']); 
  		} 
  		return $this->out['src']; 
  	} 
   
  	protected function getOutputUrl(){ 
  		if (!isset($this->out['url'])){ 
  			$this->debug && JFactory::getApplication()->enqueueMessage('ImageHelper::getOutputUrl'); 
  			if ( $this->validOptions() && in_array($this->options['type'], ImageHelper::$supports) ){ 
  				$this->out['url'] = $this->options['cache_url'].basename( $this->getOutputFile() ); 
  			} else { 
  				$this->out['url'] = is_string($this->image) ? $this->image : @$this->image['src']; 
  				$this->debug && JFactory::getApplication()->enqueueMessage('Not validOptions::'.$this->out['url']); 
  			} 
  		} 
  		return $this->out['url']; 
  	} 
   
  	/** 
  	 * @return mixed 
  	 */ 
  	public function output(){ 
  		if ( $this->validOptions() && $this->getInputResource()){ 
  			$this->debug && JFactory::getApplication()->enqueueMessage('ImageHelper::output'); 
  			$this->process(); 
  			if (is_resource($this->out['image'])){ 
  				$oImage = &$this->out['image']; 
  				switch( $this->options['type'] ){ 
  					case IMAGETYPE_JPEG: 
  						imagejpeg($oImage, $this->getOutputFile(), $this->options['quality']); 
  						break; 
  					case IMAGETYPE_GIF: 
  						imagegif($oImage, $this->getOutputFile()); 
  						break; 
  					case IMAGETYPE_PNG: 
  						imagepng($oImage, $this->getOutputFile(), 10 - round($this->options['quality']/10.0)); 
  						break; 
  				} 
  			} 
  		} 
  	} 
   
  	/** 
  	 *@return string 
  	 */ 
  	public function tag(){ 
  		$this->debug && JFactory::getApplication()->enqueueMessage('ImageHelper::tag'); 
  		if (!$this->getOutputUrl()){ 
  			return ''; 
  		} 
  		$tag = array(); 
  		if (is_array($this->image)){ 
  			foreach ($this->image as $att => $val){ 
  				if ($att == 'src'){ 
  					$tag[] = 'src="'.$this->getOutputUrl().'"'; 
  				} else { 
  					$tag[] = $att.'="'.$val.'"'; 
  				} 
  			} 
  			if (!array_key_exists('alt', $this->image)){ 
  				$tag[] = 'alt="'.$this->getOutputUrl().'"'; 
  			} 
  		} else { 
  			$tag[] = 'src="'.$this->getOutputUrl().'"'; 
  			$tag[] = 'alt="'.$this->getOutputUrl().'"'; 
  		} 
  		return count($tag) ? '<img '.implode(' ', $tag).'/>' : ''; 
  	} 
   
  	/** 
  	 * @return string 
  	 */ 
  	public function path(){ 
  		$this->debug && JFactory::getApplication()->enqueueMessage('ImageHelper::path'); 
  		return $this->__toString(); 
  	} 
   
  	public function src(){ 
  		$this->debug && JFactory::getApplication()->enqueueMessage('ImageHelper::src'); 
  		return $this->getOutputUrl(); 
  	} 
   
   
  	/** 
  	 * @return string 
  	 */ 
  	public function error(){ 
  		$this->debug && JFactory::getApplication()->enqueueMessage('ImageHelper::error'); 
  		return $this->errors; 
  	} 
   
   
  	/** 
  	 * Resize input image by size 
  	 * @param int $w 
  	 * @param int $h 
  	 * @return ImageHelper 
  	 */ 
   
  	public function resize($w = 0, $h = 0){ 
  		$this->debug && JFactory::getApplication()->enqueueMessage('ImageHelper::resize'); 
  		if ($w > 0) $this->options['width'] = $w; 
  		if ($h > 0) $this->options['height'] = $h; 
  		return $this; 
  	} 
   
  	protected function actionPerformed(){ 
  		$this->debug && JFactory::getApplication()->enqueueMessage('ImageHelper::actionPerformed'); 
  		$sImage = $this->getInputResource(); 
  		if ( !is_resource($sImage) ) return; 
  		$sw = imagesx($sImage); 
  		$sh = imagesy($sImage); 
  		if ( $this->options['function']=='resize' ){ 
  			$ow = is_null($this->options['width']) ? 0 : intval($this->options['width']); 
  			$oh = is_null($this->options['height']) ? 0 : intval($this->options['height']); 
  			if ( $ow==0 && $oh==0 ){ 
  				//die('thoi khoi resize'); 
  			} else if ($ow == 0){ 
  				// resize by height. 
  				$this->options['function_mode'] = ImageHelper::$modes[3]; 
  				$ow = $this->options['width'] = round($oh * $sw/$sh); 
  			} else if ($oh == 0){ 
  				$this->options['function_mode'] = ImageHelper::$modes[3]; 
  				$oh = $this->options['height'] = (int)round($ow * $sh/$sw); 
  				// resize by width 
  			} else if ( abs($oh-round($ow*$sh/$sw)) <= 1 ){ 
  				// resize by ca hai 
  				$this->options['function_mode'] = ImageHelper::$modes[3]; 
  				$oh = $this->options['height'] = round($ow*$sh/$sw); 
  			} 
  			$oImage = $this->getCanvas(); 
  			// build agrs 
  			$sx = $sy = 0; 
  			$dx = $dy = 0; 
  			$dw = $sw; 
  			$dh = $sh; 
  			switch($this->options['function_mode']){ 
  				case ImageHelper::$modes[0]: 
  					if ($ow > $dw) { 
  						$dx = ($ow-$dw)/2; 
  					} 
  					if ($oh > $dh) { 
  						$dy = ($oh-$dh)/2; 
  					} 
  					if ($sw > $ow){ 
  						$sx = ($sw-$ow)/2; 
  					} 
  					if ($sh > $oh){ 
  						$sy = ($sh-$oh)/2; 
  					} 
  					break; 
  				case ImageHelper::$modes[1]: 
  					$or = 1.0*$sw/$sh; 
  					if ($ow < $oh*$or){ 
  						$dw = round($oh*$or); 
  						$dh = $oh; 
  						$dx = ($ow-$dw)/2; 
  						$dy = 0; 
  					} else { 
  						$dw = $ow; 
  						$dh = round($ow/$or); 
  						$dx = 0; 
  						$dy = ($oh-$dh)/2; 
  					} 
  					break; 
  				case ImageHelper::$modes[2]: 
  					$or = 1.0*$sw/$sh; 
  					if ($ow > $oh*$or){ 
  						$dw = round($oh*$or); 
  						$dh = $oh; 
  						$dx = ($ow-$dw)/2; 
  						$dy = 0; 
  					} else { 
  						$dw = $ow; 
  						$dh = round($ow/$or); 
  						$dx = 0; 
  						$dy = ($oh-$dh)/2; 
  					} 
  					break; 
  				default: 
  				case ImageHelper::$modes[3]: 
  					$dw = $ow; 
  					$dh = $oh; 
  					break; 
  			} 
   
  			imagecopyresampled( 
  			$oImage, 
  			$sImage, 
  			$dx, $dy, $sx, $sy, 
  			$dw, $dh, $sw, $sh 
  			); 
   
  			$this->out['image'] = $oImage; 
  		} 
  		return 1; 
  	} 
   
  	public function __destruct(){ 
  		$this->save2f(); 
  		$this->debug && JFactory::getApplication()->enqueueMessage('ImageHelper::__destruct'); 
  	} 
   
  	protected function save2f(){ 
  		$this->debug && JFactory::getApplication()->enqueueMessage('ImageHelper::save2f'); 
  		if ($this->_process && ($of = $this->getOutputFile()) && !file_exists($of)){ 
  			$this->actionPerformed(); 
  			if ( array_key_exists('image', $this->out) && is_resource($this->out['image'])){ 
  				$oImage = &$this->out['image']; 
  				switch( $this->options['type'] ){ 
  					case IMAGETYPE_JPEG: 
  						imagejpeg($oImage, $of, $this->options['quality']); 
  						break; 
  					case IMAGETYPE_GIF: 
  						imagegif($oImage, $of); 
  						break; 
  					case IMAGETYPE_PNG: 
  						imagepng($oImage, $of, 10 - round($this->options['quality']/10.0)); 
  						break; 
  				} 
  			} 
  		} 
  	} 
   
  	protected function getCanvas(){ 
  		if ( !isset($this->out['image']) ){ 
  			$this->debug && JFactory::getApplication()->enqueueMessage('ImageHelper::getCanvas'); 
  			$oImage = imagecreatetruecolor($this->options['width'], $this->options['height']); 
  			if ($this->options['transparency'] && in_array($this->options['type'], array(IMAGETYPE_GIF, IMAGETYPE_PNG))){ 
  				if (IMAGETYPE_GIF == $this->in['type']){ 
  					$trans_index = imagecolortransparent($this->in['image']); 
  					if ($trans_index >= 0) { 
  						$trans_color = imagecolorsforindex($this->in['image'], $trans_index); 
  						$trans_index = imagecolorallocate($oImage, $trans_color['red'], $trans_color['green'], $trans_color['blue']); 
  						imagefill($oImage, 0, 0, $trans_index); 
  						imagecolortransparent($oImage, $trans_index); 
  					} 
  				} else if (IMAGETYPE_PNG == $this->in['type']){ 
  					$png_alpha = ((ord(file_get_contents($this->in['src'], false, null, 25, 1)) & 6) & 4) == 4; 
  					if ($png_alpha){ 
  						imagealphablending($oImage, true); 
  						$transparent = imagecolorallocatealpha($oImage, 0, 0, 0, 127); 
  						imagefilledrectangle($oImage, 0, 0, $this->options['width'], $this->options['height'], $transparent); 
  						imagealphablending($oImage, false); 
  						imagesavealpha($oImage, true); 
  					} 
  				} 
  			} else if ( !is_null($this->options['background']) 
  			 
  					&& $this->options['function']==ImageHelper::$functions[0] 
  					&& in_array($this->options['function_mode'], array(ImageHelper::$modes[0], ImageHelper::$modes[2]))){ 
  				$bgc = imagecolorallocate( 
  						$oImage, 
  						$this->options['background']['r'], 
  						$this->options['background']['g'], 
  						$this->options['background']['b'] 
  				); 
  				imagefilledrectangle($oImage, 0, 0, $this->options['width'], $this->options['height'], $bgc); 
  			} 
  			$this->out['image'] = $oImage; 
  		} 
  		return $this->out['image']; 
  	} 
   
  	public function __toString(){ 
  		$this->debug && JFactory::getApplication()->enqueueMessage('ImageHelper::__toString'); 
  		$f = $this->getOutputFile(); 
  		return is_null($f) ? '' : $f; 
  	} 
   
   
   
   
  }