layermenuitem.java

JaNet: Java Neural Network Toolkit resume: A well documented toolkit for designing and training, a

////////////////////////////////////////////////////////////////////////////////////  
//  
//  Copyright (C) 1996 L.  Patocchi & W.Gander
//
//  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., 675 Mass
//  Ave, Cambridge, MA 02139, USA.
//
//  Contacts:
//  
//    Project Supervisor
//      W.Hett       [e-mail]
//  
//    Authors
//      W.Gander     [e-mail]
//      L.Patocchi   [e-mail]
//
//  Documentation can be found at:
//
//      http://www.isbiel.ch/Projects/janet/index.html
//
////////////////////////////////////////////////////////////////////////////////////
//
// File : layerMenuItem.java
//
package jaNet.backprop.gui;

import java.awt.*;

public class layerMenuItem extends MenuComponent{

	public static final int SEPARATOR 	= 0;
	public static final int BUTTON		= 1;
	
	private boolean 	enabled, selected;
	private String 		labelItem;
	private int			itemKind;
	private int			yOffset, height;
	private int 		verticalInset = 2;
 
	// set label -> create a BUTTON
	public layerMenuItem(String label){
		labelItem = label;
		
		itemKind = BUTTON;
		
		enabled = true;
		selected = false;
		
		height = 20;

	}
	
	// no label -> create a SEPARATOR
	public layerMenuItem(){
		labelItem = null;

		itemKind = SEPARATOR;		
		
		height	= 3;
		
		enabled = true;
		selected = false;
	}

	public int drawMenuItem(Graphics g, int yoffset, int width){
		yOffset = yoffset;
	
		g.setColor(Color.lightGray);
		g.fill3DRect(0, yoffset, width,height, !selected);
		
		if (itemKind == SEPARATOR){
			g.fill3DRect(0, yoffset, width, height, true);
		}else{
			height = getStringHeight(g) + 2*verticalInset +2;
			if(height < 20) height = 20;
			
			if (enabled){
				g.setColor(Color.black);
			}else{
				g.setColor(Color.gray);
			}
			g.drawString(labelItem, (width-getLabelWidth(g))/2,yoffset + height-2 - verticalInset);
		}
		
		return height;
	}

	public String getLabel(){
		return labelItem;
	}
	public int getHeight(){
		return height;
	}

	public void setLabel(String label){
		if(itemKind != SEPARATOR) labelItem = label;
	}

	public boolean isSelectable(int y){
		return (y>yOffset && y<(yOffset + height));
	}
	public boolean isSelected(){
		return selected;
	}
	public void select(){
		if (itemKind != SEPARATOR) selected = true;
	}
	public void deselect(){
		selected = false;
	}
	public boolean isEnabled(){
		return enabled;
	}
	public void enable(){
		enabled = true;
	}
	public void enable(boolean cond){
		enabled = cond;
	}
	public void disable(){
		enabled = false;
	}

	public String paramString(){
		return "label=" + labelItem;
	}
	
	public int getLabelWidth(Graphics g){
		if(itemKind == SEPARATOR) return 50;
		FontMetrics fm = g.getFontMetrics(g.getFont());
        return fm.stringWidth(labelItem);
	}
	public int getStringHeight(Graphics g){
		FontMetrics fm = g.getFontMetrics(g.getFont());
        return fm.getHeight();
	}

}