1 |
/* -*- c-basic-offset: 8 -*- |
2 |
rdesktop: A Remote Desktop Protocol client. |
3 |
|
4 |
Support functions for Extended Window Manager Hints, |
5 |
http://www.freedesktop.org/wiki/Standards_2fwm_2dspec |
6 |
|
7 |
Copyright 2005 Peter Astrand <astrand@cendio.se> for Cendio AB |
8 |
Copyright 2007 Pierre Ossman <ossman@cendio.se> for Cendio AB |
9 |
|
10 |
This program is free software; you can redistribute it and/or modify |
11 |
it under the terms of the GNU General Public License as published by |
12 |
the Free Software Foundation; either version 2 of the License, or |
13 |
(at your option) any later version. |
14 |
|
15 |
This program is distributed in the hope that it will be useful, |
16 |
but WITHOUT ANY WARRANTY; without even the implied warranty of |
17 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
18 |
GNU General Public License for more details. |
19 |
|
20 |
You should have received a copy of the GNU General Public License |
21 |
along with this program; if not, write to the Free Software |
22 |
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
23 |
*/ |
24 |
|
25 |
#include <X11/Xlib.h> |
26 |
#include <X11/Xatom.h> |
27 |
#include <X11/Xutil.h> |
28 |
#include "rdesktop.h" |
29 |
|
30 |
#define _NET_WM_STATE_REMOVE 0 /* remove/unset property */ |
31 |
#define _NET_WM_STATE_ADD 1 /* add/set property */ |
32 |
#define _NET_WM_STATE_TOGGLE 2 /* toggle property */ |
33 |
|
34 |
extern Display *g_display; |
35 |
|
36 |
static Atom g_net_wm_state_maximized_vert_atom, g_net_wm_state_maximized_horz_atom, |
37 |
g_net_wm_state_hidden_atom, g_net_wm_name_atom, g_utf8_string_atom, |
38 |
g_net_wm_state_skip_taskbar_atom, g_net_wm_state_skip_pager_atom, |
39 |
g_net_wm_state_modal_atom, g_net_wm_icon_atom, g_net_wm_state_above_atom; |
40 |
|
41 |
Atom g_net_wm_state_atom, g_net_wm_desktop_atom; |
42 |
|
43 |
/* |
44 |
Get window property value (32 bit format) |
45 |
Returns zero on success, -1 on error |
46 |
*/ |
47 |
static int |
48 |
get_property_value(Window wnd, char *propname, long max_length, |
49 |
unsigned long *nitems_return, unsigned char **prop_return, int nowarn) |
50 |
{ |
51 |
int result; |
52 |
Atom property; |
53 |
Atom actual_type_return; |
54 |
int actual_format_return; |
55 |
unsigned long bytes_after_return; |
56 |
|
57 |
property = XInternAtom(g_display, propname, True); |
58 |
if (property == None) |
59 |
{ |
60 |
fprintf(stderr, "Atom %s does not exist\n", propname); |
61 |
return (-1); |
62 |
} |
63 |
|
64 |
result = XGetWindowProperty(g_display, wnd, property, 0, /* long_offset */ |
65 |
max_length, /* long_length */ |
66 |
False, /* delete */ |
67 |
AnyPropertyType, /* req_type */ |
68 |
&actual_type_return, |
69 |
&actual_format_return, |
70 |
nitems_return, &bytes_after_return, prop_return); |
71 |
|
72 |
if (result != Success) |
73 |
{ |
74 |
fprintf(stderr, "XGetWindowProperty failed\n"); |
75 |
return (-1); |
76 |
} |
77 |
|
78 |
if (actual_type_return == None || actual_format_return == 0) |
79 |
{ |
80 |
if (!nowarn) |
81 |
fprintf(stderr, "Window is missing property %s\n", propname); |
82 |
return (-1); |
83 |
} |
84 |
|
85 |
if (bytes_after_return) |
86 |
{ |
87 |
fprintf(stderr, "%s is too big for me\n", propname); |
88 |
return (-1); |
89 |
} |
90 |
|
91 |
if (actual_format_return != 32) |
92 |
{ |
93 |
fprintf(stderr, "%s has bad format\n", propname); |
94 |
return (-1); |
95 |
} |
96 |
|
97 |
return (0); |
98 |
} |
99 |
|
100 |
/* |
101 |
Get current desktop number |
102 |
Returns -1 on error |
103 |
*/ |
104 |
static int |
105 |
get_current_desktop(void) |
106 |
{ |
107 |
unsigned long nitems_return; |
108 |
unsigned char *prop_return; |
109 |
int current_desktop; |
110 |
|
111 |
if (get_property_value |
112 |
(DefaultRootWindow(g_display), "_NET_CURRENT_DESKTOP", 1, &nitems_return, |
113 |
&prop_return, 0) < 0) |
114 |
return (-1); |
115 |
|
116 |
if (nitems_return != 1) |
117 |
{ |
118 |
fprintf(stderr, "_NET_CURRENT_DESKTOP has bad length\n"); |
119 |
return (-1); |
120 |
} |
121 |
|
122 |
current_desktop = *prop_return; |
123 |
XFree(prop_return); |
124 |
return current_desktop; |
125 |
} |
126 |
|
127 |
/* |
128 |
Get workarea geometry |
129 |
Returns zero on success, -1 on error |
130 |
*/ |
131 |
|
132 |
int |
133 |
get_current_workarea(uint32 * x, uint32 * y, uint32 * width, uint32 * height) |
134 |
{ |
135 |
int current_desktop; |
136 |
unsigned long nitems_return; |
137 |
unsigned char *prop_return; |
138 |
uint32 *return_words; |
139 |
const uint32 net_workarea_x_offset = 0; |
140 |
const uint32 net_workarea_y_offset = 1; |
141 |
const uint32 net_workarea_width_offset = 2; |
142 |
const uint32 net_workarea_height_offset = 3; |
143 |
const uint32 max_prop_length = 32 * 4; /* Max 32 desktops */ |
144 |
|
145 |
if (get_property_value |
146 |
(DefaultRootWindow(g_display), "_NET_WORKAREA", max_prop_length, &nitems_return, |
147 |
&prop_return, 0) < 0) |
148 |
return (-1); |
149 |
|
150 |
if (nitems_return % 4) |
151 |
{ |
152 |
fprintf(stderr, "_NET_WORKAREA has odd length\n"); |
153 |
return (-1); |
154 |
} |
155 |
|
156 |
current_desktop = get_current_desktop(); |
157 |
|
158 |
if (current_desktop < 0) |
159 |
return -1; |
160 |
|
161 |
return_words = (uint32 *) prop_return; |
162 |
|
163 |
*x = return_words[current_desktop * 4 + net_workarea_x_offset]; |
164 |
*y = return_words[current_desktop * 4 + net_workarea_y_offset]; |
165 |
*width = return_words[current_desktop * 4 + net_workarea_width_offset]; |
166 |
*height = return_words[current_desktop * 4 + net_workarea_height_offset]; |
167 |
|
168 |
XFree(prop_return); |
169 |
|
170 |
return (0); |
171 |
|
172 |
} |
173 |
|
174 |
|
175 |
|
176 |
void |
177 |
ewmh_init() |
178 |
{ |
179 |
/* FIXME: Use XInternAtoms */ |
180 |
g_net_wm_state_maximized_vert_atom = |
181 |
XInternAtom(g_display, "_NET_WM_STATE_MAXIMIZED_VERT", False); |
182 |
g_net_wm_state_maximized_horz_atom = |
183 |
XInternAtom(g_display, "_NET_WM_STATE_MAXIMIZED_HORZ", False); |
184 |
g_net_wm_state_hidden_atom = XInternAtom(g_display, "_NET_WM_STATE_HIDDEN", False); |
185 |
g_net_wm_state_skip_taskbar_atom = |
186 |
XInternAtom(g_display, "_NET_WM_STATE_SKIP_TASKBAR", False); |
187 |
g_net_wm_state_skip_pager_atom = XInternAtom(g_display, "_NET_WM_STATE_SKIP_PAGER", False); |
188 |
g_net_wm_state_modal_atom = XInternAtom(g_display, "_NET_WM_STATE_MODAL", False); |
189 |
g_net_wm_state_above_atom = XInternAtom(g_display, "_NET_WM_STATE_ABOVE", False); |
190 |
g_net_wm_state_atom = XInternAtom(g_display, "_NET_WM_STATE", False); |
191 |
g_net_wm_desktop_atom = XInternAtom(g_display, "_NET_WM_DESKTOP", False); |
192 |
g_net_wm_name_atom = XInternAtom(g_display, "_NET_WM_NAME", False); |
193 |
g_net_wm_icon_atom = XInternAtom(g_display, "_NET_WM_ICON", False); |
194 |
g_utf8_string_atom = XInternAtom(g_display, "UTF8_STRING", False); |
195 |
} |
196 |
|
197 |
|
198 |
/* |
199 |
Get the window state: normal/minimized/maximized. |
200 |
*/ |
201 |
#ifndef MAKE_PROTO |
202 |
int |
203 |
ewmh_get_window_state(Window w) |
204 |
{ |
205 |
unsigned long nitems_return; |
206 |
unsigned char *prop_return; |
207 |
uint32 *return_words; |
208 |
unsigned long item; |
209 |
RD_BOOL maximized_vert, maximized_horz, hidden; |
210 |
|
211 |
maximized_vert = maximized_horz = hidden = False; |
212 |
|
213 |
if (get_property_value(w, "_NET_WM_STATE", 64, &nitems_return, &prop_return, 0) < 0) |
214 |
return SEAMLESSRDP_NORMAL; |
215 |
|
216 |
return_words = (uint32 *) prop_return; |
217 |
|
218 |
for (item = 0; item < nitems_return; item++) |
219 |
{ |
220 |
if (return_words[item] == g_net_wm_state_maximized_vert_atom) |
221 |
maximized_vert = True; |
222 |
if (return_words[item] == g_net_wm_state_maximized_horz_atom) |
223 |
maximized_horz = True; |
224 |
if (return_words[item] == g_net_wm_state_hidden_atom) |
225 |
hidden = True; |
226 |
} |
227 |
|
228 |
XFree(prop_return); |
229 |
|
230 |
if (maximized_vert && maximized_horz) |
231 |
return SEAMLESSRDP_MAXIMIZED; |
232 |
else if (hidden) |
233 |
return SEAMLESSRDP_MINIMIZED; |
234 |
else |
235 |
return SEAMLESSRDP_NORMAL; |
236 |
} |
237 |
|
238 |
static int |
239 |
ewmh_modify_state(Window wnd, int add, Atom atom1, Atom atom2) |
240 |
{ |
241 |
Status status; |
242 |
XEvent xevent; |
243 |
|
244 |
int result; |
245 |
unsigned long nitems; |
246 |
unsigned char *props; |
247 |
uint32 state = WithdrawnState; |
248 |
|
249 |
/* The spec states that the window manager must respect any |
250 |
_NET_WM_STATE attributes on a withdrawn window. In order words, we |
251 |
modify the attributes directly for withdrawn windows and ask the WM |
252 |
to do it for active windows. */ |
253 |
result = get_property_value(wnd, "WM_STATE", 64, &nitems, &props, 1); |
254 |
if ((result >= 0) && nitems) |
255 |
{ |
256 |
state = *(uint32 *) props; |
257 |
XFree(props); |
258 |
} |
259 |
|
260 |
if (state == WithdrawnState) |
261 |
{ |
262 |
if (add) |
263 |
{ |
264 |
Atom atoms[2]; |
265 |
|
266 |
atoms[0] = atom1; |
267 |
nitems = 1; |
268 |
if (atom2) |
269 |
{ |
270 |
atoms[1] = atom2; |
271 |
nitems = 2; |
272 |
} |
273 |
|
274 |
XChangeProperty(g_display, wnd, g_net_wm_state_atom, XA_ATOM, |
275 |
32, PropModeAppend, (unsigned char *) atoms, nitems); |
276 |
} |
277 |
else |
278 |
{ |
279 |
Atom *atoms; |
280 |
int i; |
281 |
|
282 |
if (get_property_value(wnd, "_NET_WM_STATE", 64, &nitems, &props, 1) < 0) |
283 |
return 0; |
284 |
|
285 |
atoms = (Atom *) props; |
286 |
|
287 |
for (i = 0; i < nitems; i++) |
288 |
{ |
289 |
if ((atoms[i] == atom1) || (atom2 && (atoms[i] == atom2))) |
290 |
{ |
291 |
if (i != (nitems - 1)) |
292 |
memmove(&atoms[i], &atoms[i + 1], |
293 |
sizeof(Atom) * (nitems - i - 1)); |
294 |
nitems--; |
295 |
i--; |
296 |
} |
297 |
} |
298 |
|
299 |
XChangeProperty(g_display, wnd, g_net_wm_state_atom, XA_ATOM, |
300 |
32, PropModeReplace, (unsigned char *) atoms, nitems); |
301 |
|
302 |
XFree(props); |
303 |
} |
304 |
|
305 |
return 0; |
306 |
} |
307 |
|
308 |
xevent.type = ClientMessage; |
309 |
xevent.xclient.window = wnd; |
310 |
xevent.xclient.message_type = g_net_wm_state_atom; |
311 |
xevent.xclient.format = 32; |
312 |
if (add) |
313 |
xevent.xclient.data.l[0] = _NET_WM_STATE_ADD; |
314 |
else |
315 |
xevent.xclient.data.l[0] = _NET_WM_STATE_REMOVE; |
316 |
xevent.xclient.data.l[1] = atom1; |
317 |
xevent.xclient.data.l[2] = atom2; |
318 |
xevent.xclient.data.l[3] = 0; |
319 |
xevent.xclient.data.l[4] = 0; |
320 |
status = XSendEvent(g_display, DefaultRootWindow(g_display), False, |
321 |
SubstructureNotifyMask | SubstructureRedirectMask, &xevent); |
322 |
if (!status) |
323 |
return -1; |
324 |
|
325 |
return 0; |
326 |
} |
327 |
|
328 |
/* |
329 |
Set the window state: normal/minimized/maximized. |
330 |
Returns -1 on failure. |
331 |
*/ |
332 |
int |
333 |
ewmh_change_state(Window wnd, int state) |
334 |
{ |
335 |
/* |
336 |
* Deal with the max atoms |
337 |
*/ |
338 |
if (state == SEAMLESSRDP_MAXIMIZED) |
339 |
{ |
340 |
if (ewmh_modify_state |
341 |
(wnd, 1, g_net_wm_state_maximized_vert_atom, |
342 |
g_net_wm_state_maximized_horz_atom) < 0) |
343 |
return -1; |
344 |
} |
345 |
else |
346 |
{ |
347 |
if (ewmh_modify_state |
348 |
(wnd, 0, g_net_wm_state_maximized_vert_atom, |
349 |
g_net_wm_state_maximized_horz_atom) < 0) |
350 |
return -1; |
351 |
} |
352 |
|
353 |
return 0; |
354 |
} |
355 |
|
356 |
|
357 |
int |
358 |
ewmh_get_window_desktop(Window wnd) |
359 |
{ |
360 |
unsigned long nitems_return; |
361 |
unsigned char *prop_return; |
362 |
int desktop; |
363 |
|
364 |
if (get_property_value(wnd, "_NET_WM_DESKTOP", 1, &nitems_return, &prop_return, 0) < 0) |
365 |
return (-1); |
366 |
|
367 |
if (nitems_return != 1) |
368 |
{ |
369 |
fprintf(stderr, "_NET_WM_DESKTOP has bad length\n"); |
370 |
return (-1); |
371 |
} |
372 |
|
373 |
desktop = *prop_return; |
374 |
XFree(prop_return); |
375 |
return desktop; |
376 |
} |
377 |
|
378 |
|
379 |
int |
380 |
ewmh_move_to_desktop(Window wnd, unsigned int desktop) |
381 |
{ |
382 |
Status status; |
383 |
XEvent xevent; |
384 |
|
385 |
xevent.type = ClientMessage; |
386 |
xevent.xclient.window = wnd; |
387 |
xevent.xclient.message_type = g_net_wm_desktop_atom; |
388 |
xevent.xclient.format = 32; |
389 |
xevent.xclient.data.l[0] = desktop; |
390 |
xevent.xclient.data.l[1] = 0; |
391 |
xevent.xclient.data.l[2] = 0; |
392 |
xevent.xclient.data.l[3] = 0; |
393 |
xevent.xclient.data.l[4] = 0; |
394 |
status = XSendEvent(g_display, DefaultRootWindow(g_display), False, |
395 |
SubstructureNotifyMask | SubstructureRedirectMask, &xevent); |
396 |
if (!status) |
397 |
return -1; |
398 |
|
399 |
return 0; |
400 |
} |
401 |
|
402 |
void |
403 |
ewmh_set_wm_name(Window wnd, const char *title) |
404 |
{ |
405 |
int len; |
406 |
|
407 |
len = strlen(title); |
408 |
XChangeProperty(g_display, wnd, g_net_wm_name_atom, g_utf8_string_atom, |
409 |
8, PropModeReplace, (unsigned char *) title, len); |
410 |
} |
411 |
|
412 |
|
413 |
int |
414 |
ewmh_set_window_popup(Window wnd) |
415 |
{ |
416 |
if (ewmh_modify_state |
417 |
(wnd, 1, g_net_wm_state_skip_taskbar_atom, g_net_wm_state_skip_pager_atom) < 0) |
418 |
return -1; |
419 |
return 0; |
420 |
} |
421 |
|
422 |
int |
423 |
ewmh_set_window_modal(Window wnd) |
424 |
{ |
425 |
if (ewmh_modify_state(wnd, 1, g_net_wm_state_modal_atom, 0) < 0) |
426 |
return -1; |
427 |
return 0; |
428 |
} |
429 |
|
430 |
void |
431 |
ewmh_set_icon(Window wnd, int width, int height, const char *rgba_data) |
432 |
{ |
433 |
unsigned long nitems, i; |
434 |
unsigned char *props; |
435 |
uint32 *cur_set, *new_set; |
436 |
uint32 *icon; |
437 |
|
438 |
cur_set = NULL; |
439 |
new_set = NULL; |
440 |
|
441 |
if (get_property_value(wnd, "_NET_WM_ICON", 10000, &nitems, &props, 1) >= 0) |
442 |
{ |
443 |
cur_set = (uint32 *) props; |
444 |
|
445 |
for (i = 0; i < nitems;) |
446 |
{ |
447 |
if (cur_set[i] == width && cur_set[i + 1] == height) |
448 |
break; |
449 |
|
450 |
i += 2 + cur_set[i] * cur_set[i + 1]; |
451 |
} |
452 |
|
453 |
if (i != nitems) |
454 |
icon = cur_set + i; |
455 |
else |
456 |
{ |
457 |
new_set = xmalloc((nitems + width * height + 2) * 4); |
458 |
memcpy(new_set, cur_set, nitems * 4); |
459 |
icon = new_set + nitems; |
460 |
nitems += width * height + 2; |
461 |
} |
462 |
} |
463 |
else |
464 |
{ |
465 |
new_set = xmalloc((width * height + 2) * 4); |
466 |
icon = new_set; |
467 |
nitems = width * height + 2; |
468 |
} |
469 |
|
470 |
icon[0] = width; |
471 |
icon[1] = height; |
472 |
|
473 |
/* Convert RGBA -> ARGB */ |
474 |
for (i = 0; i < width * height; i++) |
475 |
{ |
476 |
icon[i + 2] = |
477 |
rgba_data[i * 4 + 3] << 24 | |
478 |
((rgba_data[i * 4 + 0] << 16) & 0x00FF0000) | |
479 |
((rgba_data[i * 4 + 1] << 8) & 0x0000FF00) | |
480 |
((rgba_data[i * 4 + 2] << 0) & 0x000000FF); |
481 |
} |
482 |
|
483 |
XChangeProperty(g_display, wnd, g_net_wm_icon_atom, XA_CARDINAL, 32, |
484 |
PropModeReplace, (unsigned char *) (new_set ? new_set : cur_set), nitems); |
485 |
|
486 |
if (cur_set) |
487 |
XFree(cur_set); |
488 |
if (new_set) |
489 |
xfree(new_set); |
490 |
} |
491 |
|
492 |
void |
493 |
ewmh_del_icon(Window wnd, int width, int height) |
494 |
{ |
495 |
unsigned long nitems, i, icon_size; |
496 |
unsigned char *props; |
497 |
uint32 *cur_set, *new_set; |
498 |
|
499 |
cur_set = NULL; |
500 |
new_set = NULL; |
501 |
|
502 |
if (get_property_value(wnd, "_NET_WM_ICON", 10000, &nitems, &props, 1) < 0) |
503 |
return; |
504 |
|
505 |
cur_set = (uint32 *) props; |
506 |
|
507 |
for (i = 0; i < nitems;) |
508 |
{ |
509 |
if (cur_set[i] == width && cur_set[i + 1] == height) |
510 |
break; |
511 |
|
512 |
i += 2 + cur_set[i] * cur_set[i + 1]; |
513 |
} |
514 |
|
515 |
if (i == nitems) |
516 |
goto out; |
517 |
|
518 |
icon_size = width * height + 2; |
519 |
new_set = xmalloc((nitems - icon_size) * 4); |
520 |
|
521 |
if (i != 0) |
522 |
memcpy(new_set, cur_set, i * 4); |
523 |
if (i != nitems - icon_size) |
524 |
memcpy(new_set + i * 4, cur_set + i * 4 + icon_size, nitems - icon_size); |
525 |
|
526 |
nitems -= icon_size; |
527 |
|
528 |
XChangeProperty(g_display, wnd, g_net_wm_icon_atom, XA_CARDINAL, 32, |
529 |
PropModeReplace, (unsigned char *) new_set, nitems); |
530 |
|
531 |
xfree(new_set); |
532 |
|
533 |
out: |
534 |
XFree(cur_set); |
535 |
} |
536 |
|
537 |
int |
538 |
ewmh_set_window_above(Window wnd) |
539 |
{ |
540 |
if (ewmh_modify_state(wnd, 1, g_net_wm_state_above_atom, 0) < 0) |
541 |
return -1; |
542 |
return 0; |
543 |
} |
544 |
|
545 |
#endif /* MAKE_PROTO */ |
546 |
|
547 |
|
548 |
#if 0 |
549 |
|
550 |
/* FIXME: _NET_MOVERESIZE_WINDOW is for pagers, not for |
551 |
applications. We should implement _NET_WM_MOVERESIZE instead */ |
552 |
|
553 |
int |
554 |
ewmh_net_moveresize_window(Window wnd, int x, int y, int width, int height) |
555 |
{ |
556 |
Status status; |
557 |
XEvent xevent; |
558 |
Atom moveresize; |
559 |
|
560 |
moveresize = XInternAtom(g_display, "_NET_MOVERESIZE_WINDOW", False); |
561 |
if (!moveresize) |
562 |
{ |
563 |
return -1; |
564 |
} |
565 |
|
566 |
xevent.type = ClientMessage; |
567 |
xevent.xclient.window = wnd; |
568 |
xevent.xclient.message_type = moveresize; |
569 |
xevent.xclient.format = 32; |
570 |
xevent.xclient.data.l[0] = StaticGravity | (1 << 8) | (1 << 9) | (1 << 10) | (1 << 11); |
571 |
xevent.xclient.data.l[1] = x; |
572 |
xevent.xclient.data.l[2] = y; |
573 |
xevent.xclient.data.l[3] = width; |
574 |
xevent.xclient.data.l[4] = height; |
575 |
|
576 |
status = XSendEvent(g_display, DefaultRootWindow(g_display), False, |
577 |
SubstructureNotifyMask | SubstructureRedirectMask, &xevent); |
578 |
if (!status) |
579 |
return -1; |
580 |
return 0; |
581 |
} |
582 |
|
583 |
#endif |