1 /*
2 * Copyright (c) 2011, 2012, 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.apple.laf;
27
28 import java.awt.*;
29 import java.beans.PropertyChangeEvent;
30
31 import javax.swing.*;
32 import javax.swing.border.Border;
33 import javax.swing.plaf.basic.BasicSplitPaneDivider;
34
35 import apple.laf.*;
36 import apple.laf.JRSUIConstants.State;
37
38 import com.apple.laf.AquaUtils.LazyKeyedSingleton;
39 import com.apple.laf.AquaUtils.RecyclableSingleton;
40 import com.apple.laf.AquaUtils.RecyclableSingletonFromDefaultConstructor;
41
42 public class AquaSplitPaneDividerUI extends BasicSplitPaneDivider {
43 final AquaPainter<JRSUIState> painter = AquaPainter.create(JRSUIStateFactory.getSplitPaneDivider());
44
45 public AquaSplitPaneDividerUI(final AquaSplitPaneUI ui) {
46 super(ui);
47 setLayout(new AquaSplitPaneDividerUI.DividerLayout());
48 }
49
50 /**
51 * Property change event, presumably from the JSplitPane, will message
52 * updateOrientation if necessary.
53 */
54 public void propertyChange(final PropertyChangeEvent e) {
55 if (e.getSource() == splitPane) {
56 final String propName = e.getPropertyName();
57 if ("enabled".equals(propName)) {
58 final boolean enabled = splitPane.isEnabled();
59 if (leftButton != null) leftButton.setEnabled(enabled);
60 if (rightButton != null) rightButton.setEnabled(enabled);
61 } else if (JSplitPane.ORIENTATION_PROPERTY.equals(propName)) {
62 // need to regenerate the buttons, since we bake the orientation into them
63 if (rightButton != null) {
64 remove(rightButton); rightButton = null;
65 }
66 if (leftButton != null) {
67 remove(leftButton); leftButton = null;
68 }
69 oneTouchExpandableChanged();
70 }
71 }
72 super.propertyChange(e);
73 }
74
75 public int getMaxDividerSize() {
76 return 10;
77 }
78
79 /**
80 * Paints the divider.
81 */
82 public void paint(final Graphics g) {
83 final Dimension size = getSize();
84 int x = 0;
85 int y = 0;
86
87 final boolean horizontal = splitPane.getOrientation() == SwingConstants.HORIZONTAL;
88 //System.err.println("Size = " + size + " orientation horiz = " + horizontal);
89 // size determines orientation
90 final int maxSize = getMaxDividerSize();
91 boolean doPaint = true;
92 if (horizontal) {
93 if (size.height > maxSize) {
94 final int diff = size.height - maxSize;
95 y = diff / 2;
96 size.height = maxSize;
97 }
98 if (size.height < 4) doPaint = false;
99 } else {
100 if (size.width > maxSize) {
101 final int diff = size.width - maxSize;
102 x = diff / 2;
103 size.width = maxSize;
104 }
105 if (size.width < 4) doPaint = false;
106 }
107
108 if (doPaint) {
109 painter.state.set(getState());
110 painter.paint(g, splitPane, x, y, size.width, size.height);
111 }
112
113 super.paint(g); // Ends up at Container.paint, which paints our JButton children
114 }
115
116 protected State getState() {
117 return splitPane.isEnabled() ? State.ACTIVE : State.DISABLED;
118 }
119
120 protected JButton createLeftOneTouchButton() {
121 return createButtonForDirection(getDirection(true));
122 }
123
124 protected JButton createRightOneTouchButton() {
125 return createButtonForDirection(getDirection(false));
126 }
127
128 static final LazyKeyedSingleton<Integer, Image> directionArrows = new LazyKeyedSingleton<Integer, Image>() {
129 protected Image getInstance(final Integer direction) {
130 final Image arrowImage = AquaImageFactory.getArrowImageForDirection(direction);
131 final int h = (arrowImage.getHeight(null) * 5) / 7;
132 final int w = (arrowImage.getWidth(null) * 5) / 7;
133 return AquaUtils.generateLightenedImage(arrowImage.getScaledInstance(w, h, Image.SCALE_SMOOTH), 50);
134 }
135 };
136
137 // separate static, because the divider needs to be serializable
138 // see <rdar://problem/7590946> JSplitPane is not serializable when using Aqua look and feel
139 static JButton createButtonForDirection(final int direction) {
140 final JButton button = new JButton(new ImageIcon(directionArrows.get(Integer.valueOf(direction))));
141 button.setCursor(Cursor.getPredefinedCursor(Cursor.DEFAULT_CURSOR));
142 button.setFocusPainted(false);
143 button.setRequestFocusEnabled(false);
144 button.setFocusable(false);
145 button.setBorder(BorderFactory.createEmptyBorder(1, 1, 1, 1));
146 return button;
147 }
148
149 int getDirection(final boolean isLeft) {
150 if (splitPane.getOrientation() == JSplitPane.HORIZONTAL_SPLIT) {
151 return isLeft ? SwingConstants.WEST : SwingConstants.EAST;
152 }
153
154 return isLeft ? SwingConstants.NORTH : SwingConstants.SOUTH;
155 }
156
157 static final int kMaxPopupArrowSize = 9;
158 protected class DividerLayout extends BasicSplitPaneDivider.DividerLayout {
159 public void layoutContainer(final Container c) {
160 final int maxSize = getMaxDividerSize();
161 final Dimension size = getSize();
162
163 if (leftButton == null || rightButton == null || c != AquaSplitPaneDividerUI.this) return;
164
165 if (!splitPane.isOneTouchExpandable()) {
166 leftButton.setBounds(-5, -5, 1, 1);
167 rightButton.setBounds(-5, -5, 1, 1);
168 return;
169 }
170
171 final int blockSize = Math.min(getDividerSize(), kMaxPopupArrowSize); // make it 1 less than divider, or kMaxPopupArrowSize
172
173 // put them at the right or the bottom
174 if (orientation == JSplitPane.VERTICAL_SPLIT) {
175 int yPosition = 0;
176 if (size.height > maxSize) {
177 final int diff = size.height - maxSize;
178 yPosition = diff / 2;
179 }
180 int xPosition = kMaxPopupArrowSize + ONE_TOUCH_OFFSET;
181
182 rightButton.setBounds(xPosition, yPosition, kMaxPopupArrowSize, blockSize);
183
184 xPosition -= (kMaxPopupArrowSize + ONE_TOUCH_OFFSET);
185 leftButton.setBounds(xPosition, yPosition, kMaxPopupArrowSize, blockSize);
186 } else {
187 int xPosition = 0;
188 if (size.width > maxSize) {
189 final int diff = size.width - maxSize;
190 xPosition = diff / 2;
191 }
192 int yPosition = kMaxPopupArrowSize + ONE_TOUCH_OFFSET;
193
194 rightButton.setBounds(xPosition, yPosition, blockSize, kMaxPopupArrowSize);
195
196 yPosition -= (kMaxPopupArrowSize + ONE_TOUCH_OFFSET);
197 leftButton.setBounds(xPosition, yPosition, blockSize, kMaxPopupArrowSize);
198 }
199 }
200 }
201
202 public static Border getHorizontalSplitDividerGradientVariant() {
203 return HorizontalSplitDividerGradientPainter.instance();
204 }
205
206 static class HorizontalSplitDividerGradientPainter implements Border {
207 private static final RecyclableSingleton<HorizontalSplitDividerGradientPainter> instance = new RecyclableSingletonFromDefaultConstructor<HorizontalSplitDividerGradientPainter>(HorizontalSplitDividerGradientPainter.class);
208 static HorizontalSplitDividerGradientPainter instance() {
209 return instance.get();
210 }
211
212 final Color startColor = Color.white;
213 final Color endColor = new Color(217, 217, 217);
214 final Color borderLines = Color.lightGray;
215
216 public Insets getBorderInsets(final Component c) {
217 return new Insets(0, 0, 0, 0);
218 }
219
220 public boolean isBorderOpaque() {
221 return true;
222 }
223
224 public void paintBorder(final Component c, final Graphics g, final int x, final int y, final int width, final int height) {
225 if (!(g instanceof Graphics2D)) return;
226
227 final Graphics2D g2d = (Graphics2D)g;
228 final Color oldColor = g2d.getColor();
229
230 g2d.setPaint(new GradientPaint(0, 0, startColor, 0, height, endColor));
231 g2d.fillRect(x, y, width, height);
232 g2d.setColor(borderLines);
233 g2d.drawLine(x, y, x + width, y);
234 g2d.drawLine(x, y + height - 1, x + width, y + height - 1);
235
236 g2d.setColor(oldColor);
237 }
238 }
239 }