1 /*
2 * Copyright 2003-2009 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
27 package sun.awt.X11;
28
29 import java.awt.Frame;
30 import java.util.logging.Level;
31 import java.util.logging.Logger;
32
33 final class XNETProtocol extends XProtocol implements XStateProtocol, XLayerProtocol
34 {
35 private final static Logger log = Logger.getLogger("sun.awt.X11.XNETProtocol");
36 private final static Logger iconLog = Logger.getLogger("sun.awt.X11.icon.XNETProtocol");
37 private static Logger stateLog = Logger.getLogger("sun.awt.X11.states.XNETProtocol");
38
39 /**
40 * XStateProtocol
41 */
42 public boolean supportsState(int state) {
43 return doStateProtocol() ; // TODO - check for Frame constants
44 }
45
46 public void setState(XWindowPeer window, int state) {
47 if (log.isLoggable(Level.FINE)) log.fine("Setting state of " + window + " to " + state);
48 if (window.isShowing()) {
49 requestState(window, state);
50 } else {
51 setInitialState(window, state);
52 }
53 }
54
55 private void setInitialState(XWindowPeer window, int state) {
56 XAtomList old_state = window.getNETWMState();
57 log.log(Level.FINE, "Current state of the window {0} is {1}", new Object[] {window, old_state});
58 if ((state & Frame.MAXIMIZED_VERT) != 0) {
59 old_state.add(XA_NET_WM_STATE_MAXIMIZED_VERT);
60 } else {
61 old_state.remove(XA_NET_WM_STATE_MAXIMIZED_VERT);
62 }
63 if ((state & Frame.MAXIMIZED_HORIZ) != 0) {
64 old_state.add(XA_NET_WM_STATE_MAXIMIZED_HORZ);
65 } else {
66 old_state.remove(XA_NET_WM_STATE_MAXIMIZED_HORZ);
67 }
68 log.log(Level.FINE, "Setting initial state of the window {0} to {1}", new Object[] {window, old_state});
69 window.setNETWMState(old_state);
70 }
71
72 private void requestState(XWindowPeer window, int state) {
73 /*
74 * We have to use toggle for maximization because of transitions
75 * from maximization in one direction only to maximization in the
76 * other direction only.
77 */
78 int old_net_state = getState(window);
79 int max_changed = (state ^ old_net_state) & (Frame.MAXIMIZED_BOTH);
80
81 XClientMessageEvent req = new XClientMessageEvent();
82 try {
83 switch(max_changed) {
84 case 0:
85 return;
86 case Frame.MAXIMIZED_HORIZ:
87 req.set_data(1, XA_NET_WM_STATE_MAXIMIZED_HORZ.getAtom());
88 req.set_data(2, 0);
89 break;
90 case Frame.MAXIMIZED_VERT:
91 req.set_data(1, XA_NET_WM_STATE_MAXIMIZED_VERT.getAtom());
92 req.set_data(2, 0);
93 break;
94 case Frame.MAXIMIZED_BOTH:
95 req.set_data(1, XA_NET_WM_STATE_MAXIMIZED_HORZ.getAtom());
96 req.set_data(2, XA_NET_WM_STATE_MAXIMIZED_VERT.getAtom());
97 break;
98 default:
99 return;
100 }
101 if (log.isLoggable(Level.FINE)) log.fine("Requesting state on " + window + " for " + state);
102 req.set_type((int)XConstants.ClientMessage);
103 req.set_window(window.getWindow());
104 req.set_message_type(XA_NET_WM_STATE.getAtom());
105 req.set_format(32);
106 req.set_data(0, _NET_WM_STATE_TOGGLE);
107 XToolkit.awtLock();
108 try {
109 XlibWrapper.XSendEvent(XToolkit.getDisplay(),
110 XlibWrapper.RootWindow(XToolkit.getDisplay(), window.getScreenNumber()),
111 false,
112 XConstants.SubstructureRedirectMask | XConstants.SubstructureNotifyMask,
113 req.pData);
114 }
115 finally {
116 XToolkit.awtUnlock();
117 }
118 } finally {
119 req.dispose();
120 }
121 }
122
123 public int getState(XWindowPeer window) {
124 return getStateImpl(window);
125 }
126
127 /*
128 * New "NET" WM spec: _NET_WM_STATE/Atom[]
129 */
130 int getStateImpl(XWindowPeer window) {
131 XAtomList net_wm_state = window.getNETWMState();
132 if (net_wm_state.size() == 0) {
133 return Frame.NORMAL;
134 }
135 int java_state = Frame.NORMAL;
136 if (net_wm_state.contains(XA_NET_WM_STATE_MAXIMIZED_VERT)) {
137 java_state |= Frame.MAXIMIZED_VERT;
138 }
139 if (net_wm_state.contains(XA_NET_WM_STATE_MAXIMIZED_HORZ)) {
140 java_state |= Frame.MAXIMIZED_HORIZ;
141 }
142 return java_state;
143 }
144
145 public boolean isStateChange(XPropertyEvent e) {
146 boolean res = doStateProtocol() && (e.get_atom() == XA_NET_WM_STATE.getAtom()) ;
147
148 if (res) {
149 // Since state change happened, reset our cached state. It will be re-read by getState
150 XWindowPeer wpeer = (XWindowPeer)XToolkit.windowToXWindow(e.get_window());
151 wpeer.setNETWMState(null);
152 }
153 return res;
154 }
155
156 /*
157 * Work around for 4775545.
158 */
159 public void unshadeKludge(XWindowPeer window) {
160 XAtomList net_wm_state = window.getNETWMState();
161 net_wm_state.remove(XA_NET_WM_STATE_SHADED);
162 window.setNETWMState(net_wm_state);
163 }
164
165 /**
166 * XLayerProtocol
167 */
168 public boolean supportsLayer(int layer) {
169 return ((layer == LAYER_ALWAYS_ON_TOP) || (layer == LAYER_NORMAL)) && doLayerProtocol();
170 }
171
172 public void requestState(XWindow window, XAtom state, boolean isAdd) {
173 XClientMessageEvent req = new XClientMessageEvent();
174 try {
175 req.set_type((int)XConstants.ClientMessage);
176 req.set_window(window.getWindow());
177 req.set_message_type(XA_NET_WM_STATE.getAtom());
178 req.set_format(32);
179 req.set_data(0, isAdd ? _NET_WM_STATE_ADD : _NET_WM_STATE_REMOVE);
180 req.set_data(1, state.getAtom());
181 // Fix for 6735584: req.data[2] must be set to 0 when only one property is changed
182 req.set_data(2, 0);
183 log.log(Level.FINE, "Setting _NET_STATE atom {0} on {1} for {2}", new Object[] {state, window, Boolean.valueOf(isAdd)});
184 XToolkit.awtLock();
185 try {
186 XlibWrapper.XSendEvent(XToolkit.getDisplay(),
187 XlibWrapper.RootWindow(XToolkit.getDisplay(), window.getScreenNumber()),
188 false,
189 XConstants.SubstructureRedirectMask | XConstants.SubstructureNotifyMask,
190 req.pData);
191 }
192 finally {
193 XToolkit.awtUnlock();
194 }
195 } finally {
196 req.dispose();
197 }
198 }
199
200 /**
201 * Helper function to set/reset one state in NET_WM_STATE
202 * If window is showing then it uses ClientMessage, otherwise adjusts NET_WM_STATE list
203 * @param window Window which NET_WM_STATE property is being modified
204 * @param state State atom to be set/reset
205 * @param reset Indicates operation, 'set' if false, 'reset' if true
206 */
207 private void setStateHelper(XWindowPeer window, XAtom state, boolean set) {
208 log.log(Level.FINER, "Window visibility is: withdrawn={0}, visible={1}, mapped={2} showing={3}",
209 new Object[] {Boolean.valueOf(window.isWithdrawn()), Boolean.valueOf(window.isVisible()),
210 Boolean.valueOf(window.isMapped()), Boolean.valueOf(window.isShowing())});
211 if (window.isShowing()) {
212 requestState(window, state, set);
213 } else {
214 XAtomList net_wm_state = window.getNETWMState();
215 log.log(Level.FINE, "Current state on {0} is {1}", new Object[] {window, net_wm_state});
216 if (!set) {
217 net_wm_state.remove(state);
218 } else {
219 net_wm_state.add(state);
220 }
221 log.log(Level.FINE, "Setting states on {0} to {1}", new Object[] {window, net_wm_state});
222 window.setNETWMState(net_wm_state);
223 }
224 XToolkit.XSync();
225 }
226
227 public void setLayer(XWindowPeer window, int layer) {
228 setStateHelper(window, XA_NET_WM_STATE_ABOVE, layer == LAYER_ALWAYS_ON_TOP);
229 }
230
231 /* New "netwm" spec from www.freedesktop.org */
232 XAtom XA_UTF8_STRING = XAtom.get("UTF8_STRING"); /* like STRING but encoding is UTF-8 */
233 XAtom XA_NET_SUPPORTING_WM_CHECK = XAtom.get("_NET_SUPPORTING_WM_CHECK");
234 XAtom XA_NET_SUPPORTED = XAtom.get("_NET_SUPPORTED"); /* list of protocols (property of root) */
235 XAtom XA_NET_WM_NAME = XAtom.get("_NET_WM_NAME"); /* window property */
236 XAtom XA_NET_WM_STATE = XAtom.get("_NET_WM_STATE");/* both window property and request */
237
238 /*
239 * _NET_WM_STATE is a list of atoms.
240 * NB: Standard spelling is "HORZ" (yes, without an 'I'), but KDE2
241 * uses misspelled "HORIZ" (see KDE bug #20229). This was fixed in
242 * KDE 2.2. Under earlier versions of KDE2 horizontal and full
243 * maximization doesn't work .
244 */
245 XAtom XA_NET_WM_STATE_MAXIMIZED_HORZ = XAtom.get("_NET_WM_STATE_MAXIMIZED_HORZ");
246 XAtom XA_NET_WM_STATE_MAXIMIZED_VERT = XAtom.get("_NET_WM_STATE_MAXIMIZED_VERT");
247 XAtom XA_NET_WM_STATE_SHADED = XAtom.get("_NET_WM_STATE_SHADED");
248 XAtom XA_NET_WM_STATE_ABOVE = XAtom.get("_NET_WM_STATE_ABOVE");
249 XAtom XA_NET_WM_STATE_MODAL = XAtom.get("_NET_WM_STATE_MODAL");
250 XAtom XA_NET_WM_STATE_FULLSCREEN = XAtom.get("_NET_WM_STATE_FULLSCREEN");
251 XAtom XA_NET_WM_STATE_BELOW = XAtom.get("_NET_WM_STATE_BELOW");
252 XAtom XA_NET_WM_STATE_HIDDEN = XAtom.get("_NET_WM_STATE_HIDDEN");
253 XAtom XA_NET_WM_STATE_SKIP_TASKBAR = XAtom.get("_NET_WM_STATE_SKIP_TASKBAR");
254 XAtom XA_NET_WM_STATE_SKIP_PAGER = XAtom.get("_NET_WM_STATE_SKIP_PAGER");
255
256 XAtom XA_NET_WM_WINDOW_TYPE = XAtom.get("_NET_WM_WINDOW_TYPE");
257 XAtom XA_NET_WM_WINDOW_TYPE_DIALOG = XAtom.get("_NET_WM_WINDOW_TYPE_DIALOG");
258
259 XAtom XA_NET_WM_WINDOW_OPACITY = XAtom.get("_NET_WM_WINDOW_OPACITY");
260
261 /* For _NET_WM_STATE ClientMessage requests */
262 final static int _NET_WM_STATE_REMOVE =0; /* remove/unset property */
263 final static int _NET_WM_STATE_ADD =1; /* add/set property */
264 final static int _NET_WM_STATE_TOGGLE =2; /* toggle property */
265
266 boolean supportChecked = false;
267 long NetWindow = 0;
268 void detect() {
269 if (supportChecked) {
270 // TODO: How about detecting WM-restart or exit?
271 return;
272 }
273 NetWindow = checkAnchor(XA_NET_SUPPORTING_WM_CHECK, XAtom.XA_WINDOW);
274 supportChecked = true;
275 if (log.isLoggable(Level.FINE)) log.fine("### " + this + " is active: " + (NetWindow != 0));
276 }
277
278 boolean active() {
279 detect();
280 return NetWindow != 0;
281 }
282
283 boolean doStateProtocol() {
284 boolean res = active() && checkProtocol(XA_NET_SUPPORTED, XA_NET_WM_STATE);
285 stateLog.finer("doStateProtocol() returns " + res);
286 return res;
287 }
288
289 boolean doLayerProtocol() {
290 boolean res = active() && checkProtocol(XA_NET_SUPPORTED, XA_NET_WM_STATE_ABOVE);
291 return res;
292 }
293
294 boolean doModalityProtocol() {
295 boolean res = active() && checkProtocol(XA_NET_SUPPORTED, XA_NET_WM_STATE_MODAL);
296 return res;
297 }
298
299 boolean doOpacityProtocol() {
300 boolean res = active() && checkProtocol(XA_NET_SUPPORTED, XA_NET_WM_WINDOW_OPACITY);
301 return res;
302 }
303
304 boolean isWMName(String name) {
305 if (!active()) {
306 return false;
307 }
308 String net_wm_name_string = getWMName();
309 if (net_wm_name_string == null) {
310 return false;
311 }
312 if (log.isLoggable(Level.FINE)) log.fine("### WM_NAME = " + net_wm_name_string);
313 return net_wm_name_string.startsWith(name);
314 }
315
316 String net_wm_name_cache;
317 public String getWMName() {
318 if (!active()) {
319 return null;
320 }
321
322 if (net_wm_name_cache != null) {
323 return net_wm_name_cache;
324 }
325
326 /*
327 * Check both UTF8_STRING and STRING. We only call this function
328 * with ASCII names and UTF8 preserves ASCII bit-wise. wm-spec
329 * mandates UTF8_STRING for _NET_WM_NAME but at least sawfish-1.0
330 * still uses STRING. (mmm, moving targets...).
331 */
332 String charSet = "UTF8";
333 byte[] net_wm_name = XA_NET_WM_NAME.getByteArrayProperty(NetWindow, XA_UTF8_STRING.getAtom());
334 if (net_wm_name == null) {
335 net_wm_name = XA_NET_WM_NAME.getByteArrayProperty(NetWindow, XAtom.XA_STRING);
336 charSet = "ASCII";
337 }
338
339 if (net_wm_name == null) {
340 return null;
341 }
342 try {
343 net_wm_name_cache = new String(net_wm_name, charSet);
344 return net_wm_name_cache;
345 } catch (java.io.UnsupportedEncodingException uex) {
346 return null;
347 }
348 }
349
350 /**
351 * Sets _NET_WM_ICON property on the window using the List of XIconInfo
352 * If icons is null or empty list, removes _NET_WM_ICON property
353 */
354 public void setWMIcons(XWindowPeer window, java.util.List<XIconInfo> icons) {
355 if (window == null) return;
356
357 XAtom iconsAtom = XAtom.get("_NET_WM_ICON");
358 if (icons == null) {
359 iconsAtom.DeleteProperty(window);
360 return;
361 }
362
363 int length = 0;
364 for (XIconInfo ii : icons) {
365 length += ii.getRawLength();
366 }
367 int cardinalSize = (XlibWrapper.dataModel == 32) ? 4 : 8;
368 int bufferSize = length * cardinalSize;
369
370 if (bufferSize != 0) {
371 long buffer = XlibWrapper.unsafe.allocateMemory(bufferSize);
372 try {
373 long ptr = buffer;
374 for (XIconInfo ii : icons) {
375 int size = ii.getRawLength() * cardinalSize;
376 if (XlibWrapper.dataModel == 32) {
377 XlibWrapper.copyIntArray(ptr, ii.getIntData(), size);
378 } else {
379 XlibWrapper.copyLongArray(ptr, ii.getLongData(), size);
380 }
381 ptr += size;
382 }
383 iconsAtom.setAtomData(window.getWindow(), XAtom.XA_CARDINAL, buffer, bufferSize/Native.getCard32Size());
384 } finally {
385 XlibWrapper.unsafe.freeMemory(buffer);
386 }
387 } else {
388 iconsAtom.DeleteProperty(window);
389 }
390 }
391
392 public boolean isWMStateNetHidden(XWindowPeer window) {
393 if (!doStateProtocol()) {
394 return false;
395 }
396 XAtomList state = window.getNETWMState();
397 return (state != null && state.size() != 0 && state.contains(XA_NET_WM_STATE_HIDDEN));
398 }
399 }