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;
	
    @RName("ibtn")
    public static class $_ implements Factory {
	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(!c.isect(Coord.z, sz))
	    return(false);
	if(recthit)return true;
	if(up.getRaster().getNumBands() < 4)
	    return(true);
	return(up.getRaster().getSample(c.x, c.y, 3) >= 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(checkhit(c))
		click();
	    render();
	    return(true);
	}
	return(false);
    }
	
    public void mousemove(Coord c) {
	boolean h = checkhit(c);
	if(h != this.h) {
	    this.h = h;
	    render();
	}
    }
}