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A LookAndFeel library for swing
There is a newer version: 1.6.13
/*
* 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.bernstein;

import com.jtattoo.plaf.*;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Insets;
import javax.swing.*;
import javax.swing.plaf.ColorUIResource;
import javax.swing.plaf.ComponentUI;

/**
 * @author Michael Hagen
 */
public class BernsteinButtonUI extends BaseButtonUI {

    public static ComponentUI createUI(JComponent c) {
        return new BernsteinButtonUI();
    }

    protected void paintBackground(Graphics g, AbstractButton b) {
        if (!b.isContentAreaFilled() || (b.getParent() instanceof JMenuBar)) {
            return;
        }

        int width = b.getWidth();
        int height = b.getHeight();
        
        ButtonModel model = b.getModel();
        Color colors[] = AbstractLookAndFeel.getTheme().getButtonColors();
        if (b.isEnabled()) {
            Color background = b.getBackground();
            if (background instanceof ColorUIResource) {
                if (model.isPressed() && model.isArmed()) {
                    colors = AbstractLookAndFeel.getTheme().getPressedColors();
                } else if (b.isRolloverEnabled() && model.isRollover()) {
                    colors = AbstractLookAndFeel.getTheme().getRolloverColors();
                } else if (AbstractLookAndFeel.getTheme().doShowFocusFrame() && b.hasFocus()) {
                    colors = AbstractLookAndFeel.getTheme().getFocusColors();
                } else if (JTattooUtilities.isFrameActive(b) 
                        && (b.getRootPane() != null) 
                        && (b.equals(b.getRootPane().getDefaultButton()))) {
                    colors = AbstractLookAndFeel.getTheme().getSelectedColors();
                }
            } else {
                if (model.isPressed() && model.isArmed()) {
                    colors = ColorHelper.createColorArr(ColorHelper.darker(background, 30), ColorHelper.darker(background, 10), 20);
                } else {
                    if (b.isRolloverEnabled() && model.isRollover()) {
                        colors = ColorHelper.createColorArr(ColorHelper.brighter(background, 50), ColorHelper.brighter(background, 10), 20);
                    } else {
                        colors = ColorHelper.createColorArr(ColorHelper.brighter(background, 30), ColorHelper.darker(background, 10), 20);
                    }
                }
            }
        } else { // disabled
            colors = AbstractLookAndFeel.getTheme().getDisabledColors();
        }
        
        if (b.isBorderPainted() && (b.getBorder() != null)) {
            Insets insets = b.getBorder().getBorderInsets(b);
            int x = insets.left > 0 ? 1 : 0;
            int y = insets.top > 0 ? 1 : 0;
            int w = insets.right > 0 ? width - 1 : width;
            int h = insets.bottom > 0 ? height - 1 : height;
            JTattooUtilities.fillHorGradient(g, colors, x, y, w - x, h - y);
        } else {
            JTattooUtilities.fillHorGradient(g, colors, 0, 0, width, height);
        }
    }
    
}