1 /*
2 * Copyright 1997-2003 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 javax.swing.plaf.basic;
27
28 import java.awt;
29 import java.awt.event;
30 import javax.swing;
31 import javax.swing.event;
32 import javax.swing.border;
33 import javax.swing.plaf;
34 import java.beans;
35 import java.util.EventListener;
36 import java.io.Serializable;
37
38
39 /**
40 * Basic L&F for a minimized window on a desktop.
41 *
42 * @author David Kloba
43 * @author Steve Wilson
44 * @author Rich Schiavi
45 */
46 public class BasicDesktopIconUI extends DesktopIconUI {
47
48 protected JInternalFrame.JDesktopIcon desktopIcon;
49 protected JInternalFrame frame;
50
51 /**
52 * The title pane component used in the desktop icon.
53 *
54 * @since 1.5
55 */
56 protected JComponent iconPane;
57 MouseInputListener mouseInputListener;
58
59
60
61 public static ComponentUI createUI(JComponent c) {
62 return new BasicDesktopIconUI();
63 }
64
65 public BasicDesktopIconUI() {
66 }
67
68 public void installUI(JComponent c) {
69 desktopIcon = (JInternalFrame.JDesktopIcon)c;
70 frame = desktopIcon.getInternalFrame();
71 installDefaults();
72 installComponents();
73
74 // Update icon layout if frame is already iconified
75 JInternalFrame f = desktopIcon.getInternalFrame();
76 if (f.isIcon() && f.getParent() == null) {
77 JDesktopPane desktop = desktopIcon.getDesktopPane();
78 if (desktop != null) {
79 DesktopManager desktopManager = desktop.getDesktopManager();
80 if (desktopManager instanceof DefaultDesktopManager) {
81 desktopManager.iconifyFrame(f);
82 }
83 }
84 }
85
86 installListeners();
87 JLayeredPane.putLayer(desktopIcon, JLayeredPane.getLayer(frame));
88 }
89
90 public void uninstallUI(JComponent c) {
91 uninstallDefaults();
92 uninstallComponents();
93
94 // Force future UI to relayout icon
95 JInternalFrame f = desktopIcon.getInternalFrame();
96 if (f.isIcon()) {
97 JDesktopPane desktop = desktopIcon.getDesktopPane();
98 if (desktop != null) {
99 DesktopManager desktopManager = desktop.getDesktopManager();
100 if (desktopManager instanceof DefaultDesktopManager) {
101 // This will cause DefaultDesktopManager to layout the icon
102 f.putClientProperty("wasIconOnce", null);
103 // Move aside to allow fresh layout of all icons
104 desktopIcon.setLocation(Integer.MIN_VALUE, 0);
105 }
106 }
107 }
108
109 uninstallListeners();
110 frame = null;
111 desktopIcon = null;
112 }
113
114 protected void installComponents() {
115 iconPane = new BasicInternalFrameTitlePane(frame);
116 desktopIcon.setLayout(new BorderLayout());
117 desktopIcon.add(iconPane, BorderLayout.CENTER);
118 }
119
120 protected void uninstallComponents() {
121 desktopIcon.remove(iconPane);
122 desktopIcon.setLayout(null);
123 iconPane = null;
124 }
125
126 protected void installListeners() {
127 mouseInputListener = createMouseInputListener();
128 desktopIcon.addMouseMotionListener(mouseInputListener);
129 desktopIcon.addMouseListener(mouseInputListener);
130 }
131
132 protected void uninstallListeners() {
133 desktopIcon.removeMouseMotionListener(mouseInputListener);
134 desktopIcon.removeMouseListener(mouseInputListener);
135 mouseInputListener = null;
136 }
137
138 protected void installDefaults() {
139 LookAndFeel.installBorder(desktopIcon, "DesktopIcon.border");
140 LookAndFeel.installProperty(desktopIcon, "opaque", Boolean.TRUE);
141 }
142
143 protected void uninstallDefaults() {
144 LookAndFeel.uninstallBorder(desktopIcon);
145 }
146
147 protected MouseInputListener createMouseInputListener() {
148 return new MouseInputHandler();
149 }
150
151 public Dimension getPreferredSize(JComponent c) {
152 return desktopIcon.getLayout().preferredLayoutSize(desktopIcon);
153 }
154
155 public Dimension getMinimumSize(JComponent c) {
156 Dimension dim = new Dimension(iconPane.getMinimumSize());
157 Border border = frame.getBorder();
158
159 if (border != null) {
160 dim.height += border.getBorderInsets(frame).bottom +
161 border.getBorderInsets(frame).top;
162 }
163 return dim;
164 }
165
166 /**
167 * Desktop icons can not be resized. Therefore, we should always
168 * return the minimum size of the desktop icon.
169 *
170 * @see #getMinimumSize
171 */
172 public Dimension getMaximumSize(JComponent c){
173 return iconPane.getMaximumSize();
174 }
175
176 public Insets getInsets(JComponent c) {
177 JInternalFrame iframe = desktopIcon.getInternalFrame();
178 Border border = iframe.getBorder();
179 if(border != null)
180 return border.getBorderInsets(iframe);
181
182 return new Insets(0,0,0,0);
183 }
184
185 public void deiconize() {
186 try { frame.setIcon(false); } catch (PropertyVetoException e2) { }
187 }
188
189 /**
190 * Listens for mouse movements and acts on them.
191 *
192 * This inner class is marked "public" due to a compiler bug.
193 * This class should be treated as a "protected" inner class.
194 * Instantiate it only within subclasses of <Foo>.
195 */
196 public class MouseInputHandler extends MouseInputAdapter
197 {
198 // _x & _y are the mousePressed location in absolute coordinate system
199 int _x, _y;
200 // __x & __y are the mousePressed location in source view's coordinate system
201 int __x, __y;
202 Rectangle startingBounds;
203
204 public void mouseReleased(MouseEvent e) {
205 _x = 0;
206 _y = 0;
207 __x = 0;
208 __y = 0;
209 startingBounds = null;
210
211 JDesktopPane d;
212 if((d = desktopIcon.getDesktopPane()) != null) {
213 DesktopManager dm = d.getDesktopManager();
214 dm.endDraggingFrame(desktopIcon);
215 }
216
217 }
218
219 public void mousePressed(MouseEvent e) {
220 Point p = SwingUtilities.convertPoint((Component)e.getSource(),
221 e.getX(), e.getY(), null);
222 __x = e.getX();
223 __y = e.getY();
224 _x = p.x;
225 _y = p.y;
226 startingBounds = desktopIcon.getBounds();
227
228 JDesktopPane d;
229 if((d = desktopIcon.getDesktopPane()) != null) {
230 DesktopManager dm = d.getDesktopManager();
231 dm.beginDraggingFrame(desktopIcon);
232 }
233
234 try { frame.setSelected(true); } catch (PropertyVetoException e1) { }
235 if(desktopIcon.getParent() instanceof JLayeredPane) {
236 ((JLayeredPane)desktopIcon.getParent()).moveToFront(desktopIcon);
237 }
238
239 if(e.getClickCount() > 1) {
240 if(frame.isIconifiable() && frame.isIcon()) {
241 deiconize();
242 }
243 }
244
245 }
246
247 public void mouseMoved(MouseEvent e) {}
248
249 public void mouseDragged(MouseEvent e) {
250 Point p;
251 int newX, newY, newW, newH;
252 int deltaX;
253 int deltaY;
254 Dimension min;
255 Dimension max;
256 p = SwingUtilities.convertPoint((Component)e.getSource(),
257 e.getX(), e.getY(), null);
258
259 Insets i = desktopIcon.getInsets();
260 int pWidth, pHeight;
261 pWidth = ((JComponent)desktopIcon.getParent()).getWidth();
262 pHeight = ((JComponent)desktopIcon.getParent()).getHeight();
263
264 if (startingBounds == null) {
265 // (STEVE) Yucky work around for bug ID 4106552
266 return;
267 }
268 newX = startingBounds.x - (_x - p.x);
269 newY = startingBounds.y - (_y - p.y);
270 // Make sure we stay in-bounds
271 if(newX + i.left <= -__x)
272 newX = -__x - i.left;
273 if(newY + i.top <= -__y)
274 newY = -__y - i.top;
275 if(newX + __x + i.right > pWidth)
276 newX = pWidth - __x - i.right;
277 if(newY + __y + i.bottom > pHeight)
278 newY = pHeight - __y - i.bottom;
279
280 JDesktopPane d;
281 if((d = desktopIcon.getDesktopPane()) != null) {
282 DesktopManager dm = d.getDesktopManager();
283 dm.dragFrame(desktopIcon, newX, newY);
284 } else {
285 moveAndRepaint(desktopIcon, newX, newY,
286 desktopIcon.getWidth(), desktopIcon.getHeight());
287 }
288 return;
289 }
290
291 public void moveAndRepaint(JComponent f, int newX, int newY,
292 int newWidth, int newHeight) {
293 Rectangle r = f.getBounds();
294 f.setBounds(newX, newY, newWidth, newHeight);
295 SwingUtilities.computeUnion(newX, newY, newWidth, newHeight, r);
296 f.getParent().repaint(r.x, r.y, r.width, r.height);
297 }
298 }; /// End MotionListener
299
300 }
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