<?php
/*
SVG to dojox.gfx Parser
Copyright (C) 2009  Aaron Lindsay <aclindsay@aclindsay.com>

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program 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 General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
*/

require_once("objects/Gradient.php");

class LinearGradient extends Gradient {
	private $x1;
	private $y1;
	private $x2;
	private $y2;
	
	private $transformsApplied = false;

	public function __construct() {
		parent::__construct();
	}
	
	public function setX1($x) {
		$this->x1 = $x;
	}
	public function setY1($x) {
		$this->y1 = $x;
	}
	public function setX2($x) {
		$this->x2 = $x;
	}
	public function setY2($x) {
		$this->y2 = $x;
	}
	
	public function getX1() {
		return $this->x1;
	}
	public function getY1() {
		return $this->y1;
	}
	public function getX2() {
		return $this->x2;
	}
	public function getY2() {
		return $this->y2;
	}
	
	public function isValid() {
		if (!parent::isValid())
			return false;
		if (!isset($this->x1) || !isset($this->y1) || !isset($this->x2) || !isset($this->y2))
			return false;
		
		return true;
	}
	
	public function transformsApplied() {
		return $this->transformsApplied;
	}
	
	//apply all the transforms to the points in this gradient
	public function applyTransforms() {
		$transforms = $this->getTransforms();
		foreach($transforms as $transform) {
			$oldX1 = $this->x1;
			$oldY1 = $this->y1;
			$oldX2 = $this->x2;
			$oldY2 = $this->y2;
			$this->x1 = $transform->applyToX($oldX1, $oldY1);
			$this->y1 = $transform->applyToY($oldX1, $oldY1);
			$this->x2 = $transform->applyToX($oldX2, $oldY2);
			$this->y2 = $transform->applyToY($oldX2, $oldY2);
		}
		$this->transformsApplied = true;
	}
}
?>