IButton.java

/*
 *  This file is part of the Haven & Hearth game client.
 *  Copyright (C) 2009 Fredrik Tolf <fredrik@dolda2000.com>, and
 *                     Björn Johannessen <johannessen.bjorn@gmail.com>
 *
 *  Redistribution and/or modification of this file is subject to the
 *  terms of the GNU Lesser General Public License, version 3, as
 *  published by the Free Software Foundation.
 *
 *  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.
 *
 *  Other parts of this source tree adhere to other copying
 *  rights. Please see the file `COPYING' in the root directory of the
 *  source tree for details.
 *
 *  A copy the GNU Lesser General Public License is distributed along
 *  with the source tree of which this file is a part in the file
 *  `doc/LPGL-3'. If it is missing for any reason, please see the Free
 *  Software Foundation's website at <http://www.fsf.org/>, or write
 *  to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
 *  Boston, MA 02111-1307 USA
 */

package haven;

import java.awt.Graphics;
import java.awt.image.BufferedImage;

public class IButton extends SSWidget {
	BufferedImage up, down, hover;
	boolean a = false, h = false;
	public boolean recthit = false;

	static {
		Widget.addtype("ibtn", new WidgetFactory() {
			public Widget create(Coord c, Widget parent, Object[] args) {
				return (new IButton(c, parent, Resource.loadimg((String) args[0]), Resource.loadimg((String) args[1])));
			}
		});
	}

	public IButton(Coord c, Widget parent, BufferedImage up, BufferedImage down, BufferedImage hover) {
		super(c, Utils.imgsz(up), parent);
		this.up = up;
		this.down = down;
		this.hover = hover;
		render();
	}

	public IButton(Coord c, Widget parent, BufferedImage up, BufferedImage down) {
		this(c, parent, up, down, up);
	}

	public void render() {
		clear();
		Graphics g = graphics();
		if (a)
			g.drawImage(down, 0, 0, null);
		else if (h)
			g.drawImage(hover, 0, 0, null);
		else
			g.drawImage(up, 0, 0, null);
		update();
	}

	public boolean checkhit(Coord c) {
		if (recthit)
			return true;
		int cl = up.getRGB(c.x, c.y);
		return (Utils.rgbm.getAlpha(cl) >= 128);
	}

	public void click() {
		wdgmsg("activate");
	}

	public boolean mousedown(Coord c, int button) {
		if (button != 1)
			return (false);
		if (!checkhit(c))
			return (false);
		a = true;
		ui.grabmouse(this);
		render();
		return (true);
	}

	public boolean mouseup(Coord c, int button) {
		if (a && button == 1) {
			a = false;
			ui.grabmouse(null);
			if (c.isect(new Coord(0, 0), sz) && checkhit(c))
				click();
			render();
			return (true);
		}
		return (false);
	}

	public void mousemove(Coord c) {
		boolean h = c.isect(Coord.z, sz);
		if (h != this.h) {
			this.h = h;
			render();
		}
	}
}