/*
 * Copyright 2005 MH-Software-Entwicklung. All rights reserved.
 * Use is subject to license terms.
 */
package com.jtattoo.plaf.acryl;

import java.awt.*;
import javax.swing.*;
import javax.swing.plaf.*;

import com.jtattoo.plaf.*;

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

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

    protected JButton createDecreaseButton(int orientation) {
        return new BaseScrollButton(orientation, scrollBarWidth);
    }

    protected JButton createIncreaseButton(int orientation) {
        return new BaseScrollButton(orientation, scrollBarWidth);
    }

    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);

            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);

            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);
    }
}