BaseTitleButton.java

/*
* Copyright (c) 2002 and later by MH Software-Entwicklung. All Rights Reserved.
*  
* JTattoo is multiple licensed. If your are an open source developer you can use
* it under the terms and conditions of the GNU General Public License version 2.0
* or later as published by the Free Software Foundation.
*  
* see: gpl-2.0.txt
* 
* If you pay for a license you will become a registered user who could use the
* software under the terms and conditions of the GNU Lesser General Public License
* version 2.0 or later with classpath exception as published by the Free Software
* Foundation.
* 
* see: lgpl-2.0.txt
* see: classpath-exception.txt
* 
* Registered users could also use JTattoo under the terms and conditions of the 
* Apache License, Version 2.0 as published by the Apache Software Foundation.
*  
* see: APACHE-LICENSE-2.0.txt
*/

package com.jtattoo.plaf;

import java.awt.*;
import javax.swing.Action;
import javax.swing.Icon;

/**
 * @author  Michael Hagen
 */
public class BaseTitleButton extends NoFocusButton {

    private float alpha = 1.0f;

    public BaseTitleButton(Action action, String accessibleName, Icon icon, float alpha) {
        setContentAreaFilled(false);
        setBorderPainted(false);
        setAction(action);
        setText(null);
        setIcon(icon);
        putClientProperty("paintActive", Boolean.TRUE);
        getAccessibleContext().setAccessibleName(accessibleName);
        this.alpha = Math.max(0.2f, alpha);
    }

    public void paint(Graphics g) {
        if (JTattooUtilities.isActive(this) || (alpha >= 1.0)) {
            super.paint(g);
        } else {
            Graphics2D g2D = (Graphics2D) g;
            Composite savedComposite = g2D.getComposite();
            AlphaComposite alphaComposite = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, alpha);
            g2D.setComposite(alphaComposite);
            super.paint(g);
            g2D.setComposite(savedComposite);
        }
    }

}