|
1 /* |
|
2 * Copyright 2002-2006 Sun Microsystems, Inc. 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. Sun designates this |
|
8 * particular file as subject to the "Classpath" exception as provided |
|
9 * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
|
22 * CA 95054 USA or visit www.sun.com if you need additional information or |
|
23 * have any questions. |
|
24 */ |
|
25 |
|
26 package sun.awt.X11; |
|
27 |
|
28 import java.awt.*; |
|
29 import java.awt.event.*; |
|
30 import java.awt.peer.*; |
|
31 import java.util.logging.*; |
|
32 |
|
33 class XScrollbarPeer extends XComponentPeer implements ScrollbarPeer, XScrollbarClient { |
|
34 private final static Logger log = Logger.getLogger("sun.awt.X11.XScrollbarPeer"); |
|
35 |
|
36 private static final int DEFAULT_LENGTH = 50; |
|
37 private static final int DEFAULT_WIDTH_SOLARIS = 19; |
|
38 private static final int DEFAULT_WIDTH_LINUX; |
|
39 |
|
40 XScrollbar tsb; |
|
41 |
|
42 static { |
|
43 DEFAULT_WIDTH_LINUX = XToolkit.getUIDefaults().getInt("ScrollBar.defaultWidth"); |
|
44 } |
|
45 |
|
46 public void preInit(XCreateWindowParams params) { |
|
47 super.preInit(params); |
|
48 Scrollbar target = (Scrollbar) this.target; |
|
49 if (target.getOrientation() == Scrollbar.VERTICAL) { |
|
50 tsb = new XVerticalScrollbar(this); |
|
51 } else { |
|
52 tsb = new XHorizontalScrollbar(this); |
|
53 } |
|
54 int min = target.getMinimum(); |
|
55 int max = target.getMaximum(); |
|
56 int vis = target.getVisibleAmount(); |
|
57 int val = target.getValue(); |
|
58 int line = target.getLineIncrement(); |
|
59 int page = target.getPageIncrement(); |
|
60 tsb.setValues(val, vis, min, max, line, page); |
|
61 } |
|
62 |
|
63 /** |
|
64 * Create a scrollbar. |
|
65 */ |
|
66 XScrollbarPeer(Scrollbar target) { |
|
67 super(target); |
|
68 this.target = target; |
|
69 xSetVisible(true); |
|
70 } |
|
71 |
|
72 /** |
|
73 * Returns default size of scrollbar on the platform |
|
74 * Currently uses hardcoded values |
|
75 */ |
|
76 private int getDefaultDimension() { |
|
77 if (System.getProperty("os.name").equals("Linux")) { |
|
78 return DEFAULT_WIDTH_LINUX; |
|
79 } else { |
|
80 return DEFAULT_WIDTH_SOLARIS; |
|
81 } |
|
82 } |
|
83 |
|
84 /** |
|
85 * Compute the minimum size for the scrollbar. |
|
86 */ |
|
87 public Dimension getMinimumSize() { |
|
88 Scrollbar sb = (Scrollbar)target; |
|
89 return (sb.getOrientation() == Scrollbar.VERTICAL) |
|
90 ? new Dimension(getDefaultDimension(), DEFAULT_LENGTH) |
|
91 : new Dimension(DEFAULT_LENGTH, getDefaultDimension()); |
|
92 } |
|
93 |
|
94 public void repaint() { |
|
95 Graphics g = getGraphics(); |
|
96 if (g != null) paint(g); |
|
97 } |
|
98 |
|
99 /** |
|
100 * Paint the scrollbar. |
|
101 */ |
|
102 public void paint(Graphics g) { |
|
103 Scrollbar sb = (Scrollbar)target; |
|
104 Color colors[] = getGUIcolors(); |
|
105 g.setColor(colors[BACKGROUND_COLOR]); |
|
106 tsb.paint(g, colors, true); |
|
107 // paint the whole scrollbar |
|
108 } |
|
109 |
|
110 public void repaintScrollbarRequest(XScrollbar sb) { |
|
111 repaint(); |
|
112 } |
|
113 |
|
114 /** |
|
115 * The value has changed. |
|
116 */ |
|
117 public void notifyValue(XScrollbar obj, int type, int value, boolean isAdjusting) { |
|
118 Scrollbar sb = (Scrollbar)target; |
|
119 sb.setValue(value); |
|
120 postEvent( new AdjustmentEvent(sb, AdjustmentEvent.ADJUSTMENT_VALUE_CHANGED, type, value, isAdjusting)); |
|
121 } |
|
122 |
|
123 /** |
|
124 * |
|
125 * @see java.awt.event.MouseEvent |
|
126 * MouseEvent.MOUSE_CLICKED |
|
127 * MouseEvent.MOUSE_PRESSED |
|
128 * MouseEvent.MOUSE_RELEASED |
|
129 * MouseEvent.MOUSE_MOVED |
|
130 * MouseEvent.MOUSE_ENTERED |
|
131 * MouseEvent.MOUSE_EXITED |
|
132 * MouseEvent.MOUSE_DRAGGED |
|
133 */ |
|
134 public void handleJavaMouseEvent( MouseEvent mouseEvent ) { |
|
135 super.handleJavaMouseEvent(mouseEvent); |
|
136 |
|
137 int x = mouseEvent.getX(); |
|
138 int y = mouseEvent.getY(); |
|
139 int modifiers = mouseEvent.getModifiers(); |
|
140 int id = mouseEvent.getID(); |
|
141 |
|
142 |
|
143 if ((mouseEvent.getModifiers() & InputEvent.BUTTON1_MASK) == 0) { |
|
144 return; |
|
145 } |
|
146 |
|
147 switch (mouseEvent.getID()) { |
|
148 case MouseEvent.MOUSE_PRESSED: |
|
149 target.requestFocus(); |
|
150 tsb.handleMouseEvent(id, modifiers,x,y); |
|
151 break; |
|
152 |
|
153 case MouseEvent.MOUSE_RELEASED: |
|
154 tsb.handleMouseEvent(id, modifiers,x,y); |
|
155 break; |
|
156 |
|
157 case MouseEvent.MOUSE_DRAGGED: |
|
158 tsb.handleMouseEvent(id, modifiers,x,y); |
|
159 break; |
|
160 } |
|
161 } |
|
162 |
|
163 public void handleJavaKeyEvent(KeyEvent event) { |
|
164 super.handleJavaKeyEvent(event); |
|
165 if (log.isLoggable(Level.FINEST)) log.finer("KeyEvent on scrollbar: " + event); |
|
166 if (!(event.isConsumed()) && event.getID() == KeyEvent.KEY_RELEASED) { |
|
167 switch(event.getKeyCode()) { |
|
168 case KeyEvent.VK_UP: |
|
169 log.finer("Scrolling up"); |
|
170 tsb.notifyValue(tsb.getValue() - tsb.getUnitIncrement()); |
|
171 break; |
|
172 case KeyEvent.VK_DOWN: |
|
173 log.finer("Scrolling down"); |
|
174 tsb.notifyValue(tsb.getValue() + tsb.getUnitIncrement()); |
|
175 break; |
|
176 case KeyEvent.VK_LEFT: |
|
177 log.finer("Scrolling up"); |
|
178 tsb.notifyValue(tsb.getValue() - tsb.getUnitIncrement()); |
|
179 break; |
|
180 case KeyEvent.VK_RIGHT: |
|
181 log.finer("Scrolling down"); |
|
182 tsb.notifyValue(tsb.getValue() + tsb.getUnitIncrement()); |
|
183 break; |
|
184 case KeyEvent.VK_PAGE_UP: |
|
185 log.finer("Scrolling page up"); |
|
186 tsb.notifyValue(tsb.getValue() - tsb.getBlockIncrement()); |
|
187 break; |
|
188 case KeyEvent.VK_PAGE_DOWN: |
|
189 log.finer("Scrolling page down"); |
|
190 tsb.notifyValue(tsb.getValue() + tsb.getBlockIncrement()); |
|
191 break; |
|
192 case KeyEvent.VK_HOME: |
|
193 log.finer("Scrolling to home"); |
|
194 tsb.notifyValue(0); |
|
195 break; |
|
196 case KeyEvent.VK_END: |
|
197 log.finer("Scrolling to end"); |
|
198 tsb.notifyValue(tsb.getMaximum()); |
|
199 break; |
|
200 } |
|
201 } |
|
202 } |
|
203 |
|
204 public void setValue(int value) { |
|
205 tsb.setValue(value); |
|
206 repaint(); |
|
207 } |
|
208 |
|
209 public void setValues(int value, int visible, int minimum, int maximum) { |
|
210 |
|
211 tsb.setValues(value, visible, minimum, maximum); |
|
212 repaint(); |
|
213 } |
|
214 |
|
215 public void setLineIncrement(int l) { |
|
216 tsb.setUnitIncrement(l); |
|
217 } |
|
218 |
|
219 public void setPageIncrement(int p) { |
|
220 tsb.setBlockIncrement(p); |
|
221 } |
|
222 |
|
223 public void layout() { |
|
224 super.layout(); |
|
225 tsb.setSize(width, height); |
|
226 } |
|
227 } |