<?php
	/* Libchart - PHP chart library
	 * Copyright (C) 2005-2007 Jean-Marc Trémeaux (jm.tremeaux at gmail.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 3 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, see <http://www.gnu.org/licenses/>.
	 *
	 */

	defined('FULL_PATH') or die('restricted access!');

	/**
	 * Graphic primitives, extends GD with chart related primitives.
	 *
	 * @author Jean-Marc Trémeaux (jm.tremeaux at gmail.com)
	 */
	class LibchartPrimitive {
		private $img;

		/**
		 * Creates a new primitive object
		 *
		 * @param	resource	GD image resource
		 */
		public function __construct($img) {
			$this->img = $img;
		}

		/**
		 * Draws a straight line.
		 *
		 * @param integer line start (X)
		 * @param integer line start (Y)
		 * @param integer line end (X)
		 * @param integer line end (Y)
		 * @param Color line color
		 */
		public function line($x1, $y1, $x2, $y2, $color, $width = 1) {
			imagefilledpolygon($this->img, array($x1, $y1 - $width / 2, $x1, $y1 + $width / 2, $x2, $y2 + $width / 2, $x2, $y2 - $width / 2), 4, $color->getColor($this->img));
			// imageline($this->img, $x1, $y1, $x2, $y2, $color->getColor($this->img));
		}

		/**
		 * Draw a filled gray box with thick borders and darker corners.
		 *
		 * @param integer top left coordinate (x)
		 * @param integer top left coordinate (y)
		 * @param integer bottom right coordinate (x)
		 * @param integer bottom right coordinate (y)
		 * @param Color edge color
		 * @param Color corner color
		 */
		public function outlinedBox($x1, $y1, $x2, $y2, $color0, $color1) {
			imagefilledrectangle($this->img, $x1, $y1, $x2, $y2, $color0->getColor($this->img));
			imagerectangle($this->img, $x1, $y1, $x1 + 1, $y1 + 1, $color1->getColor($this->img));
			imagerectangle($this->img, $x2 - 1, $y1, $x2, $y1 + 1, $color1->getColor($this->img));
			imagerectangle($this->img, $x1, $y2 - 1, $x1 + 1, $y2, $color1->getColor($this->img));
			imagerectangle($this->img, $x2 - 1, $y2 - 1, $x2, $y2, $color1->getColor($this->img));
		}

	}