<?php
/*
*	Pt (PHP Toolkit)
*	Copyright (C) 2008  Dinu Florin
*
*	Pt is free software: you can redistribute it and/or modify
*	it under the terms of the GNU Lesser General Public License as published by
*	the Free Software Foundation, either version 3 of the License, or
*	any later version.
*
*	Pt is distributed in the hope that it will be useful,
*	but WITHOUT ANY WARRANTY; without even the implied warranty of
*	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
*	GNU Lesser General Public License for more details.
*
*	You should have received a copy of the GNU Lesser General Public License
*	along with Pt.  If not, see <http://www.gnu.org/licenses/>.
*/
/**
*	This file contains the Merge filter class.
*	
*	@author		Dinu Florin <contact@florindinu.ro>
*	@package	Modules
*	@subpackage	Images
*/

/**
*	Image merge filter class.
*
*	@author		Dinu Florin	<contact@florindinu.ro>
*	@package	Modules
*	@subpackage	Images
*/
class MergeWithImage extends AbstractImageFilter
{
	protected $image;
	protected $pct;

	/**
	*	Constructor.
	*
	*	@param	Image	$image	The image to use for the merge.
	*	@param	number	$s		The merge "strength", 0 to 100
	*/
	public function __construct(Image $image, $s=100)
	{
		$this->image	= $image;
		$this->pct		= $s;
	}

	/**
	*	Apply to an image
	*
	*	@param	Image	$image	The image to apply the filter to
	*/
	public function applyTo(Image $image)
	{
		$overlay = $this->image->getResource();
		$base = $image->getResource();

		
        imagealphablending($base, true);
        imagesavealpha($base, true);
        
        imagecopy($base, $overlay, 0, 0, 0, 0, $this->image->width, $this->image->height);
		$image->setResource($base);
	}
}
?>