1/*
2 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.  Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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23 * questions.
24 */
25package com.sun.java.swing.plaf.motif;
26
27import java.awt.Dimension;
28import java.awt.Graphics;
29import java.awt.Insets;
30import java.awt.Rectangle;
31
32import javax.swing.JButton;
33import javax.swing.JComponent;
34import javax.swing.JScrollBar;
35import javax.swing.plaf.ComponentUI;
36import javax.swing.plaf.basic.BasicScrollBarUI;
37
38import static sun.swing.SwingUtilities2.drawHLine;
39import static sun.swing.SwingUtilities2.drawVLine;
40
41
42/**
43 * Implementation of ScrollBarUI for the Motif Look and Feel
44 * <p>
45 * <strong>Warning:</strong>
46 * Serialized objects of this class will not be compatible with
47 * future Swing releases.  The current serialization support is appropriate
48 * for short term storage or RMI between applications running the same
49 * version of Swing.  A future release of Swing will provide support for
50 * long term persistence.
51 *
52 * @author Rich Schiavi
53 * @author Hans Muller
54 */
55public class MotifScrollBarUI extends BasicScrollBarUI
56{
57
58    public static ComponentUI createUI(JComponent c) {
59        return new MotifScrollBarUI();
60    }
61
62    public Dimension getPreferredSize(JComponent c) {
63        Insets insets = c.getInsets();
64        int dx = insets.left + insets.right;
65        int dy = insets.top + insets.bottom;
66        return (scrollbar.getOrientation() == JScrollBar.VERTICAL)
67            ? new Dimension(dx + 11, dy + 33)
68            : new Dimension(dx + 33, dy + 11);
69    }
70
71    protected JButton createDecreaseButton(int orientation) {
72        return new MotifScrollBarButton(orientation);
73    }
74
75    protected JButton createIncreaseButton(int orientation) {
76        return new MotifScrollBarButton(orientation);
77    }
78
79    public void paintTrack(Graphics g, JComponent c, Rectangle trackBounds)  {
80        g.setColor(trackColor);
81        g.fillRect(trackBounds.x, trackBounds.y, trackBounds.width, trackBounds.height);
82    }
83
84    public void paintThumb(Graphics g, JComponent c, Rectangle thumbBounds) {
85        if (thumbBounds.isEmpty() || !scrollbar.isEnabled()) {
86            return;
87        }
88
89        int w = thumbBounds.width;
90        int h = thumbBounds.height;
91
92        g.translate(thumbBounds.x, thumbBounds.y);
93        g.setColor(thumbColor);
94        g.fillRect(0, 0, w - 1, h - 1);
95
96        g.setColor(thumbHighlightColor);
97        drawVLine(g, 0, 0, h - 1);
98        drawHLine(g, 1, w - 1, 0);
99
100        g.setColor(thumbLightShadowColor);
101        drawHLine(g, 1, w - 1, h - 1);
102        drawVLine(g, w - 1, 1, h - 2);
103
104        g.translate(-thumbBounds.x, -thumbBounds.y);
105    }
106}
107