/*******************************************************************************
 * This file is part of logisim-evolution.
 *
 *   logisim-evolution 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.
 *
 *   logisim-evolution 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 logisim-evolution.  If not, see <http://www.gnu.org/licenses/>.
 *
 *   Original code by Carl Burch (http://www.cburch.com), 2011.
 *   Subsequent modifications by :
 *     + Haute École Spécialisée Bernoise
 *       http://www.bfh.ch
 *     + Haute École du paysage, d'ingénierie et d'architecture de Genève
 *       http://hepia.hesge.ch/
 *     + Haute École d'Ingénierie et de Gestion du Canton de Vaud
 *       http://www.heig-vd.ch/
 *   The project is currently maintained by :
 *     + REDS Institute - HEIG-VD
 *       Yverdon-les-Bains, Switzerland
 *       http://reds.heig-vd.ch
 *******************************************************************************/

package com.cburch.logisim.util;

import java.awt.Component;
import java.awt.Graphics;
import java.awt.Graphics2D;

import javax.swing.Icon;
import javax.swing.ImageIcon;

import com.cburch.logisim.data.Direction;

public class Icons {
	public static ImageIcon getIcon(String name) {
		java.net.URL url = Icons.class.getClassLoader().getResource(
				path + "/" + name);
		if (url == null)
			return null;
		return new ImageIcon(url);
	}

	public static void paintRotated(Graphics g, int x, int y, Direction dir,
			Icon icon, Component dest) {
		if (!(g instanceof Graphics2D) || dir == Direction.EAST) {
			icon.paintIcon(dest, g, x, y);
			return;
		}

		Graphics2D g2 = (Graphics2D) g.create();
		double cx = x + icon.getIconWidth() / 2.0;
		double cy = y + icon.getIconHeight() / 2.0;
		if (dir == Direction.WEST) {
			g2.rotate(Math.PI, cx, cy);
		} else if (dir == Direction.NORTH) {
			g2.rotate(-Math.PI / 2.0, cx, cy);
		} else if (dir == Direction.SOUTH) {
			g2.rotate(Math.PI / 2.0, cx, cy);
		} else {
			g2.translate(-x, -y);
		}
		icon.paintIcon(dest, g2, x, y);
		g2.dispose();
	}

	private static final String path = "resources/logisim/icons";

	private Icons() {
	}
}