imageeditor.php

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				return false;
			}
		}
		else
		{
			//save the file.
			$img->save($newFullpath);
			$img->free();
		}

		// when uploaded was resized and saved, remove original
		if ($action == "replace" && $percentage > 0)
		{
			unlink($fullpath);
		}

		//get the image information
		$imgInfo = @getimagesize($newFullpath);

		$image['src'] = $newURL;
		$image['dimensions'] = $imgInfo[3];
		$image['width'] = $imgInfo[0];
		$image['height'] = $imgInfo[1];
		$image['file'] = $newRelative;
		$image['fullpath'] = $newFullpath;


		Return $image;
	
	}



	/**
	 * Get the file name base on the save name
	 * and the save type.
	 * @param string $type image type, 'jpeg', 'png', or 'gif'
	 * @return string the filename according to save type
	 */
	function getSaveFileName($type) 
	{
		if(!isset($_GET['file']))
			Return null;

		$filename = Files::escape(rawurldecode($_GET['file']));
		$index = strrpos($filename,'.');
		$base = substr($filename,0,$index);
		$ext = strtolower(substr($filename,$index+1,strlen($filename)));

		if($type == 'jpeg' && !($ext=='jpeg' || $ext=='jpg'))
		{
			Return $base.'.jpeg';
		}
		if($type=='png' && $ext != 'png')
			Return $base.'.png';
		if($type=='gif' && $ext != 'gif')
			Return $base.'.gif';

		Return $filename;
	}

	/**
	 * Get the default save file name, used by editor.php.
	 * @return string a suggestive filename, this should be unique
	 */
	function getDefaultSaveFile() 
	{
		if(isset($_GET['img']))
			$relative = rawurldecode($_GET['img']);
		else
			Return null;

		Return $this->getUniqueFilename($relative);
	}

	/**
	 * Get a unique filename. If the file exists, the filename
	 * base is appended with an increasing integer.
	 * @param string $relative the relative filename to the base_dir
	 * @return string a unique filename in the current path
	 */
	function getUniqueFilename($relative) 
	{
		$fullpath = $this->manager->getFullPath($relative);
		
		$pathinfo = pathinfo($fullpath);

		$path = Files::fixPath($pathinfo['dirname']);
		$file = Files::escape($pathinfo['basename']);
		
		$filename = $file;

		$dotIndex = strrpos($file, '.');
		$ext = '';

		if(is_int($dotIndex)) 
		{
			$ext = substr($file, $dotIndex);
			$base = substr($file, 0, $dotIndex);
		}

		$counter = 0;
		while(is_file($path.$filename)) 
		{
			$counter++;
			$filename = $base.'_'.$counter.$ext;
		}
		
		Return $filename;
		
	}

	/**
	 * Specifiy the original relative path, a new filename
	 * and return the new filename with relative path.
	 * i.e. $pathA (-filename) + $file
	 * @param string $pathA the relative file
	 * @param string $file the new filename
	 * @return string relative path with the new filename
	 */
	function makeRelative($pathA, $file) 
	{
		$index = strrpos($pathA,'/');
		if(!is_int($index))
			Return $file;

		$path = substr($pathA, 0, $index);
		Return Files::fixPath($path).$file;
	}

	/**
	 * Get the action GET parameter
	 * @return string action parameter
	 */
	function getAction() 
	{
		$action = null;
		if(isset($_GET['action']))
			$action = $_GET['action'];
		Return $action;
	}

	/**
	 * Generate a unique string based on md5(microtime()).
	 * Well not so uniqe, as it is limited to 6 characters
	 * @return string unique string.
	 */
    function uniqueStr()
    {
      return substr(md5(microtime()),0,6);
    }

	/**
	 * Create unique tmp image file name.
	 * The filename is based on the tmp file prefix
	 * specified in config.inc.php plus 
	 * the UID (basically a md5 of the remote IP)
	 * and some random 6 character string.
	 * This function also calls to clean up the tmp files.
	 * @param string $file the fullpath to a file
	 * @return string a unique filename for that path
	 * NOTE: it only returns the filename, path no included.
	 */
	function createUnique($file) 
	{
		$pathinfo = pathinfo($file);
		$path = Files::fixPath($pathinfo['dirname']);
		$imgType = $this->getImageType($file);

		$unique_str = $this->manager->getTmpPrefix().$this->_uid.'_'.$this->uniqueStr().".".$imgType;

	   //make sure the the unique temp file does not exists
        while (file_exists($path.$unique_str))
        {
            $unique_str = $this->manager->getTmpPrefix().$this->_uid.'_'.$this->uniqueStr().".".$imgType;
        }

		$this->cleanUp($path,$pathinfo['basename']);

		Return $unique_str;
	}

	/**
	 * Delete any tmp image files.
	 * @param string $path the full path 
	 * where the clean should take place.
	 */
	function cleanUp($path,$file) 
	{
		$path = Files::fixPath($path);

		if(!is_dir($path))
			Return false;

		$d = @dir($path);
		
		$tmp = $this->manager->getTmpPrefix();
		$tmpLen = strlen($tmp);

		$prefix = $tmp.$this->_uid;
		$len = strlen($prefix);

		while (false !== ($entry = $d->read())) 
		{
			//echo $entry."<br>";
			if(is_file($path.$entry) && $this->manager->isTmpFile($entry))
			{
				if(substr($entry,0,$len)==$prefix && $entry != $file)
					Files::delFile($path.$entry);
				else if(substr($entry,0,$tmpLen)==$tmp && $entry != $file)
				{
					if(filemtime($path.$entry)+$this->lapse_time < time())
						Files::delFile($path.$entry);
				}
			}
		}
		$d->close();
	}

	/**
	 * Get the image type base on an image file.
	 * @param string $file the full path to the image file.
	 * @return string of either 'gif', 'jpeg', 'png' or 'bmp'
	 * otherwise it will return null.
	 */
	function getImageType($file) 
	{
		$imageInfo = @getImageSize($file);

		if(!is_array($imageInfo))
			Return null;

		switch($imageInfo[2]) 
		{
			case 1:
				Return 'gif';
			case 2:
				Return 'jpeg';
			case 3:
				Return 'png';
			case 6:
				Return 'bmp';
		}

		Return null;
	}

	/**
	 * Check if the specified image can be edit by GD
	 * mainly to check that GD can read and save GIFs
	 * @return int 0 if it is not a GIF file, 1 is GIF is editable, -1 if not editable.
	 */
	function isGDEditable() 
	{
		if(isset($_GET['img']))
			$relative = rawurldecode($_GET['img']);
		else
			Return 0;
		if(IMAGE_CLASS != 'GD')
			Return 0;

		$fullpath = $this->manager->getFullPath($relative);

		$type = $this->getImageType($fullpath);
		if($type != 'gif')
			Return 0;

		if(function_exists('ImageCreateFrom'+$type)
			&& function_exists('image'+$type))
			Return 1;
		else
			Return -1;
	}

	/**
	 * Check if GIF can be edit by GD.
	 * @return int 0 if it is not using the GD library, 1 is GIF is editable, -1 if not editable.
	 */
	function isGDGIFAble() 
	{
		if(IMAGE_CLASS != 'GD')
			Return 0;

		if(function_exists('ImageCreateFromGif')
			&& function_exists('imagegif'))
			Return 1;
		else
			Return -1;
	}
}

?>