1 /*
2 * Copyright (c) 1997, 1998, 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
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package com.sun.java.swing.plaf.motif;
27
28 import javax.swing.*;
29 import javax.swing.event.*;
30 import javax.swing.plaf.*;
31 import javax.swing.plaf.basic.BasicArrowButton;
32
33 import java.awt.*;
34 import java.awt.event.*;
35
36 /**
37 * Motif scroll bar button.
38 * <p>
39 * <strong>Warning:</strong>
40 * Serialized objects of this class will not be compatible with
41 * future Swing releases. The current serialization support is appropriate
42 * for short term storage or RMI between applications running the same
43 * version of Swing. A future release of Swing will provide support for
44 * long term persistence.
45 */
46 public class MotifScrollBarButton extends BasicArrowButton
47 {
48 private Color darkShadow = UIManager.getColor("controlShadow");
49 private Color lightShadow = UIManager.getColor("controlLtHighlight");
50
51
52 public MotifScrollBarButton(int direction)
53 {
54 super(direction);
55
56 switch (direction) {
57 case NORTH:
58 case SOUTH:
59 case EAST:
60 case WEST:
61 this.direction = direction;
62 break;
63 default:
64 throw new IllegalArgumentException("invalid direction");
65 }
66
67 setRequestFocusEnabled(false);
68 setOpaque(true);
69 setBackground(UIManager.getColor("ScrollBar.background"));
70 setForeground(UIManager.getColor("ScrollBar.foreground"));
71 }
72
73
74 public Dimension getPreferredSize() {
75 switch (direction) {
76 case NORTH:
77 case SOUTH:
78 return new Dimension(11, 12);
79 case EAST:
80 case WEST:
81 default:
82 return new Dimension(12, 11);
83 }
84 }
85
86 public Dimension getMinimumSize() {
87 return getPreferredSize();
88 }
89
90 public Dimension getMaximumSize() {
91 return getPreferredSize();
92 }
93
94 public boolean isFocusTraversable() {
95 return false;
96 }
97
98 public void paint(Graphics g)
99 {
100 int w = getWidth();
101 int h = getHeight();
102
103 if (isOpaque()) {
104 g.setColor(getBackground());
105 g.fillRect(0, 0, w, h);
106 }
107
108 boolean isPressed = getModel().isPressed();
109 Color lead = (isPressed) ? darkShadow : lightShadow;
110 Color trail = (isPressed) ? lightShadow : darkShadow;
111 Color fill = getBackground();
112
113 int cx = w / 2;
114 int cy = h / 2;
115 int s = Math.min(w, h);
116
117 switch (direction) {
118 case NORTH:
119 g.setColor(lead);
120 g.drawLine(cx, 0, cx, 0);
121 for (int x = cx - 1, y = 1, dx = 1; y <= s - 2; y += 2) {
122 g.setColor(lead);
123 g.drawLine(x, y, x, y);
124 if (y >= (s - 2)) {
125 g.drawLine(x, y + 1, x, y + 1);
126 }
127 g.setColor(fill);
128 g.drawLine(x + 1, y, x + dx, y);
129 if (y < (s - 2)) {
130 g.drawLine(x, y + 1, x + dx + 1, y + 1);
131 }
132 g.setColor(trail);
133 g.drawLine(x + dx + 1, y, x + dx + 1, y);
134 if (y >= (s - 2)) {
135 g.drawLine(x + 1, y + 1, x + dx + 1, y + 1);
136 }
137 dx += 2;
138 x -= 1;
139 }
140 break;
141
142 case SOUTH:
143 g.setColor(trail);
144 g.drawLine(cx, s, cx, s);
145 for (int x = cx - 1, y = s - 1, dx = 1; y >= 1; y -= 2) {
146 g.setColor(lead);
147 g.drawLine(x, y, x, y);
148 if (y <= 2) {
149 g.drawLine(x, y - 1, x + dx + 1, y - 1);
150 }
151 g.setColor(fill);
152 g.drawLine(x + 1, y, x + dx, y);
153 if (y > 2) {
154 g.drawLine(x, y - 1, x + dx + 1, y - 1);
155 }
156 g.setColor(trail);
157 g.drawLine(x + dx + 1, y, x + dx + 1, y);
158
159 dx += 2;
160 x -= 1;
161 }
162 break;
163
164 case EAST:
165 g.setColor(lead);
166 g.drawLine(s, cy, s, cy);
167 for (int y = cy - 1, x = s - 1, dy = 1; x >= 1; x -= 2) {
168 g.setColor(lead);
169 g.drawLine(x, y, x, y);
170 if (x <= 2) {
171 g.drawLine(x - 1, y, x - 1, y + dy + 1);
172 }
173 g.setColor(fill);
174 g.drawLine(x, y + 1, x, y + dy);
175 if (x > 2) {
176 g.drawLine(x - 1, y, x - 1, y + dy + 1);
177 }
178 g.setColor(trail);
179 g.drawLine(x, y + dy + 1, x, y + dy + 1);
180
181 dy += 2;
182 y -= 1;
183 }
184 break;
185
186 case WEST:
187 g.setColor(trail);
188 g.drawLine(0, cy, 0, cy);
189 for (int y = cy - 1, x = 1, dy = 1; x <= s - 2; x += 2) {
190 g.setColor(lead);
191 g.drawLine(x, y, x, y);
192 if (x >= (s - 2)) {
193 g.drawLine(x + 1, y, x + 1, y);
194 }
195 g.setColor(fill);
196 g.drawLine(x, y + 1, x, y + dy);
197 if (x < (s - 2)) {
198 g.drawLine(x + 1, y, x + 1, y + dy + 1);
199 }
200 g.setColor(trail);
201 g.drawLine(x, y + dy + 1, x, y + dy + 1);
202 if (x >= (s - 2)) {
203 g.drawLine(x + 1, y + 1, x + 1, y + dy + 1);
204 }
205 dy += 2;
206 y -= 1;
207 }
208 break;
209 }
210 }
211 }