QuaquaLionScrollBarThumbBorder.java

/*
 * @(#)QuaquaLionScrollBarThumbBorder.java  1.0  2011-08-05
 * 
 * Copyright (c) 2011 Werner Randelshofer, Immensee, Switzerland.
 * All rights reserved.
 * 
 * You may not use, copy or modify this file, except in compliance with the
 * license agreement you entered into with Werner Randelshofer.
 * For details see accompanying license terms.
 */
package ch.randelshofer.quaqua.lion;

import ch.randelshofer.quaqua.QuaquaUtilities;
import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Insets;
import javax.swing.JScrollBar;
import javax.swing.SwingConstants;
import javax.swing.UIManager;
import javax.swing.border.Border;
import javax.swing.plaf.UIResource;

/**
 * {@code QuaquaLionScrollBarThumbBorder}.
 *
 * @author Werner Randelshofer
 * @version 1.0 2011-08-05 Created.
 */
public class QuaquaLionScrollBarThumbBorder implements Border, UIResource {

    private final static Color activeThumbColor = new Color(0x74747474, false);
    private final static Color thumbColor = new Color(0xc3c3c3c3, false);

    public void paintBorder(Component c, Graphics gr, int x, int y, int width, int height) {
        JScrollBar sb = (JScrollBar) c;
        Graphics2D g = (Graphics2D) gr;
        Object oldHints = QuaquaUtilities.beginGraphics(g);
        Dimension ps = sb.getUI().getPreferredSize(sb);

        boolean isActive = sb.getValueIsAdjusting();
        QuaquaUtilities.SizeVariant sv = QuaquaUtilities.getSizeVariant(c);
        Insets ins;
        switch (sv) {
            default:
            case REGULAR:
                ins = UIManager.getInsets("ScrollBar.thumbInsets");
                break;
            case SMALL:
                ins = UIManager.getInsets("ScrollBar.thumbInsets.small");
                break;
            case MINI:
                ins = UIManager.getInsets("ScrollBar.thumbInsets.mini");
                break;
        }
        g.setColor(isActive ? activeThumbColor : thumbColor);

        if (sb.getOrientation() == SwingConstants.HORIZONTAL) {
            height = Math.min(ps.height, height);
//            g.fillRoundRect(x + 2, y + 4, width - 4, height - 7, height -7, height - 6);
            g.fillRoundRect(
                    x + ins.top, y + ins.left, 
                    width - ins.top - ins.bottom, height - ins.left - ins.right, 
                    height - ins.left - ins.right, height - ins.left - ins.right);
        } else {
            width = Math.min(ps.width, width);
//            g.fillRoundRect(x + 4, y + 2, width - 7, height - 4, width - 7, width - 7);
            g.fillRoundRect(
                    x + ins.left, y + ins.top,
                    width - ins.left - ins.right, height - ins.top - ins.bottom,
                    width - ins.left - ins.right, width - ins.left - ins.right);
        }
        QuaquaUtilities.endGraphics(g, oldHints);
    }

    public Insets getBorderInsets(Component c) {
        return new Insets(2, 2, 2, 2);
    }

    public boolean isBorderOpaque() {
        return false;
    }
}