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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.acryl;

import com.jtattoo.plaf.*;
import java.awt.*;
import javax.swing.*;
import javax.swing.plaf.ComponentUI;

/**
 *
 * @author  Michael Hagen
 */
public class AcrylScrollBarUI extends BaseScrollBarUI {

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

    @Override
    protected void paintThumb(Graphics g, JComponent c, Rectangle thumbBounds) {
        if (!c.isEnabled()) {
            return;
        }

        g.translate(thumbBounds.x, thumbBounds.y);

        Color colors[] = getThumbColors();
        Color frameColor = AbstractLookAndFeel.getFrameColor();
        if (!JTattooUtilities.isActive(scrollbar)) {
            frameColor = ColorHelper.brighter(frameColor, 80);
        }
        if (isRollover || isDragging) {
            frameColor = AbstractLookAndFeel.getTheme().getRolloverColorDark();
        }

        if (scrollbar.getOrientation() == JScrollBar.VERTICAL) {
            JTattooUtilities.fillVerGradient(g, colors, 1, 1, thumbBounds.width - 1, thumbBounds.height - 1);

            JTattooUtilities.draw3DBorder(g, frameColor, ColorHelper.darker(frameColor, 15), 0, 0, thumbBounds.width, thumbBounds.height);

            Graphics2D g2D = (Graphics2D) g;
            Composite composite = g2D.getComposite();
            AlphaComposite alpha = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.4f);
            g2D.setComposite(alpha);

            if (!AbstractLookAndFeel.getTheme().isMacStyleScrollBarOn()) {
                int dx = 5;
                int dy = thumbBounds.height / 2 - 3;
                int dw = thumbBounds.width - 11;

                Color c1 = Color.white;
                Color c2 = Color.darkGray;

                for (int i = 0; i < 4; i++) {
                    g.setColor(c1);
                    g.drawLine(dx, dy, dx + dw, dy);
                    dy++;
                    g.setColor(c2);
                    g.drawLine(dx, dy, dx + dw, dy);
                    dy++;
                }
            }
            g2D.setComposite(composite);
        } else { // HORIZONTAL
            JTattooUtilities.fillHorGradient(g, colors, 1, 1, thumbBounds.width - 1, thumbBounds.height - 1);
            JTattooUtilities.draw3DBorder(g, frameColor, ColorHelper.darker(frameColor, 10), 0, 0, thumbBounds.width, thumbBounds.height);

            int dx = thumbBounds.width / 2 - 3;
            int dy = 5;
            int dh = thumbBounds.height - 11;

            Graphics2D g2D = (Graphics2D) g;
            Composite composite = g2D.getComposite();
            AlphaComposite alpha = AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.4f);
            g2D.setComposite(alpha);

            if (!AbstractLookAndFeel.getTheme().isMacStyleScrollBarOn()) {
                Color c1 = Color.white;
                Color c2 = Color.darkGray;

                for (int i = 0; i < 4; i++) {
                    g.setColor(c1);
                    g.drawLine(dx, dy, dx, dy + dh);
                    dx++;
                    g.setColor(c2);
                    g.drawLine(dx, dy, dx, dy + dh);
                    dx++;
                }
            }
            g2D.setComposite(composite);
        }

        g.translate(-thumbBounds.x, -thumbBounds.y);
    }
    
} // end of class AcrylScrollBarUI