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A LookAndFeel library for swing
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/*
* 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.hifi;

import com.jtattoo.plaf.*;
import java.awt.*;
import java.awt.geom.Area;
import java.awt.geom.Rectangle2D;
import javax.swing.*;
import javax.swing.plaf.ColorUIResource;
import javax.swing.plaf.ComponentUI;
import javax.swing.plaf.UIResource;

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

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

    @Override
    protected void paintBackground(Graphics g, AbstractButton b) {
        if (!b.isContentAreaFilled() || (b.getParent() instanceof JMenuBar)) {
            return;
        }
        int width = b.getWidth();
        int height = b.getHeight();
        Graphics2D g2D = (Graphics2D) g;
        Shape savedClip = g.getClip();
        if ((b.getBorder() != null) && b.isBorderPainted() && (b.getBorder() instanceof UIResource)) {
            Area clipArea = new Area(new Rectangle2D.Double(1, 1, width - 2, height - 2));
            if (savedClip != null) {
                clipArea.intersect(new Area(savedClip));
            }
            g2D.setClip(clipArea);
        }
        super.paintBackground(g, b);
        g2D.setClip(savedClip);
    }

    @Override
    protected void paintText(Graphics g, AbstractButton b, Rectangle textRect, String text) {
        ButtonModel model = b.getModel();
        FontMetrics fm = JTattooUtilities.getFontMetrics(b, g, b.getFont());
        int mnemIndex = b.getDisplayedMnemonicIndex();
        int offs = 0;
        if (model.isArmed() && model.isPressed()) {
            offs = 1;
        }

        Graphics2D g2D = (Graphics2D) g;
        Composite composite = g2D.getComposite();
        AlphaComposite alpha = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.6f);
        g2D.setComposite(alpha);
        Color foreground = b.getForeground();
        Color background = b.getBackground();
        if (background instanceof ColorUIResource) {
            if (model.isPressed() && model.isArmed()) {
                foreground = AbstractLookAndFeel.getTheme().getSelectionForegroundColor();
            } else if (model.isRollover()) {
                foreground = AbstractLookAndFeel.getTheme().getRolloverForegroundColor();
            }
        }
        if (!model.isEnabled()) {
            foreground = AbstractLookAndFeel.getTheme().getDisabledForegroundColor();
        }
        if (ColorHelper.getGrayValue(foreground) > 64) {
            g2D.setColor(Color.black);
        } else {
            g2D.setColor(Color.white);
        }
        JTattooUtilities.drawStringUnderlineCharAt(b, g, text, mnemIndex, textRect.x + offs + 1, textRect.y + offs + fm.getAscent() + 1);
        g2D.setComposite(composite);
        g2D.setColor(foreground);
        JTattooUtilities.drawStringUnderlineCharAt(b, g, text, mnemIndex, textRect.x + offs, textRect.y + offs + fm.getAscent());
    }
    
} // end of class HiFiButtonUI