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1 | /* |
2 | * Copyright © 2008 Red Hat, Inc. | |
3 | * | |
4 | * Permission is hereby granted, free of charge, to any person obtaining a | |
5 | * copy of this software and associated documentation files (the "Software"), | |
6 | * to deal in the Software without restriction, including without limitation | |
7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
8 | * and/or sell copies of the Software, and to permit persons to whom the | |
9 | * Software is furnished to do so, subject to the following conditions: | |
10 | * | |
11 | * The above copyright notice and this permission notice (including the next | |
12 | * paragraph) shall be included in all copies or substantial portions of the | |
13 | * Software. | |
14 | * | |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | |
20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER | |
21 | * DEALINGS IN THE SOFTWARE. | |
22 | * | |
23 | * Authors: Peter Hutterer | |
24 | * | |
25 | */ | |
26 | ||
27 | #ifdef HAVE_DIX_CONFIG_H | |
28 | #include <dix-config.h> | |
29 | #endif | |
30 | ||
31 | #include <X11/X.h> | |
32 | #include <X11/extensions/XI2.h> | |
33 | #include <X11/extensions/XIproto.h> | |
34 | #include <X11/extensions/XI2proto.h> | |
35 | #include "inputstr.h" | |
36 | #include "windowstr.h" | |
37 | #include "scrnintstr.h" | |
38 | #include "exglobals.h" | |
39 | #include "enterleave.h" | |
40 | #include "eventconvert.h" | |
41 | #include "xkbsrv.h" | |
42 | #include "inpututils.h" | |
43 | ||
44 | /** | |
45 | * @file | |
46 | * This file describes the model for sending core enter/leave events and | |
47 | * focus in/out in the case of multiple pointers/keyboard foci. | |
48 | * | |
49 | * Since we can't send more than one Enter or Leave/Focus in or out event per | |
50 | * window to a core client without confusing it, this is a rather complicated | |
51 | * approach. | |
52 | * | |
53 | * For a full description of the enter/leave model from a window's | |
54 | * perspective, see | |
55 | * http://lists.freedesktop.org/archives/xorg/2008-August/037606.html | |
56 | * | |
57 | * For a full description of the focus in/out model from a window's | |
58 | * perspective, see | |
59 | * http://lists.freedesktop.org/archives/xorg/2008-December/041740.html | |
60 | * | |
61 | * Additional notes: | |
62 | * - The core protocol spec says that "In a LeaveNotify event, if a child of the | |
63 | * event window contains the initial position of the pointer, then the child | |
64 | * component is set to that child. Otherwise, it is None. For an EnterNotify | |
65 | * event, if a child of the event window contains the final pointer position, | |
66 | * then the child component is set to that child. Otherwise, it is None." | |
67 | * | |
68 | * By inference, this means that only NotifyVirtual or NotifyNonlinearVirtual | |
69 | * events may have a subwindow set to other than None. | |
70 | * | |
71 | * - NotifyPointer events may be sent if the focus changes from window A to | |
72 | * B. The assumption used in this model is that NotifyPointer events are only | |
73 | * sent for the pointer paired with the keyboard that is involved in the focus | |
74 | * events. For example, if F(W) changes because of keyboard 2, then | |
75 | * NotifyPointer events are only sent for pointer 2. | |
76 | */ | |
77 | ||
78 | static WindowPtr PointerWindows[MAXDEVICES]; | |
79 | static WindowPtr FocusWindows[MAXDEVICES]; | |
80 | ||
81 | /** | |
82 | * Return TRUE if 'win' has a pointer within its boundaries, excluding child | |
83 | * window. | |
84 | */ | |
85 | static BOOL | |
86 | HasPointer(DeviceIntPtr dev, WindowPtr win) | |
87 | { | |
88 | int i; | |
89 | ||
90 | /* FIXME: The enter/leave model does not cater for grabbed devices. For | |
91 | * now, a quickfix: if the device about to send an enter/leave event to | |
92 | * a window is grabbed, assume there is no pointer in that window. | |
93 | * Fixes fdo 27804. | |
94 | * There isn't enough beer in my fridge to fix this properly. | |
95 | */ | |
96 | if (dev->deviceGrab.grab) | |
97 | return FALSE; | |
98 | ||
99 | for (i = 0; i < MAXDEVICES; i++) | |
100 | if (PointerWindows[i] == win) | |
101 | return TRUE; | |
102 | ||
103 | return FALSE; | |
104 | } | |
105 | ||
106 | /** | |
107 | * Return TRUE if at least one keyboard focus is set to 'win' (excluding | |
108 | * descendants of win). | |
109 | */ | |
110 | static BOOL | |
111 | HasFocus(WindowPtr win) | |
112 | { | |
113 | int i; | |
114 | ||
115 | for (i = 0; i < MAXDEVICES; i++) | |
116 | if (FocusWindows[i] == win) | |
117 | return TRUE; | |
118 | ||
119 | return FALSE; | |
120 | } | |
121 | ||
122 | /** | |
123 | * Return the window the device dev is currently on. | |
124 | */ | |
125 | static WindowPtr | |
126 | PointerWin(DeviceIntPtr dev) | |
127 | { | |
128 | return PointerWindows[dev->id]; | |
129 | } | |
130 | ||
131 | /** | |
132 | * Search for the first window below 'win' that has a pointer directly within | |
133 | * it's boundaries (excluding boundaries of its own descendants). | |
134 | * | |
135 | * @return The child window that has the pointer within its boundaries or | |
136 | * NULL. | |
137 | */ | |
138 | static WindowPtr | |
139 | FirstPointerChild(WindowPtr win) | |
140 | { | |
141 | int i; | |
142 | ||
143 | for (i = 0; i < MAXDEVICES; i++) { | |
144 | if (PointerWindows[i] && IsParent(win, PointerWindows[i])) | |
145 | return PointerWindows[i]; | |
146 | } | |
147 | ||
148 | return NULL; | |
149 | } | |
150 | ||
151 | /** | |
152 | * Search for the first window below 'win' that has a focus directly within | |
153 | * it's boundaries (excluding boundaries of its own descendants). | |
154 | * | |
155 | * @return The child window that has the pointer within its boundaries or | |
156 | * NULL. | |
157 | */ | |
158 | static WindowPtr | |
159 | FirstFocusChild(WindowPtr win) | |
160 | { | |
161 | int i; | |
162 | ||
163 | for (i = 0; i < MAXDEVICES; i++) { | |
164 | if (FocusWindows[i] && FocusWindows[i] != PointerRootWin && | |
165 | IsParent(win, FocusWindows[i])) | |
166 | return FocusWindows[i]; | |
167 | } | |
168 | ||
169 | return NULL; | |
170 | } | |
171 | ||
172 | /** | |
173 | * Set the presence flag for dev to mark that it is now in 'win'. | |
174 | */ | |
175 | void | |
176 | EnterWindow(DeviceIntPtr dev, WindowPtr win, int mode) | |
177 | { | |
178 | PointerWindows[dev->id] = win; | |
179 | } | |
180 | ||
181 | /** | |
182 | * Unset the presence flag for dev to mark that it is not in 'win' anymore. | |
183 | */ | |
184 | void | |
185 | LeaveWindow(DeviceIntPtr dev) | |
186 | { | |
187 | PointerWindows[dev->id] = NULL; | |
188 | } | |
189 | ||
190 | /** | |
191 | * Set the presence flag for dev to mark that it is now in 'win'. | |
192 | */ | |
193 | void | |
194 | SetFocusIn(DeviceIntPtr dev, WindowPtr win) | |
195 | { | |
196 | FocusWindows[dev->id] = win; | |
197 | } | |
198 | ||
199 | /** | |
200 | * Unset the presence flag for dev to mark that it is not in 'win' anymore. | |
201 | */ | |
202 | void | |
203 | SetFocusOut(DeviceIntPtr dev) | |
204 | { | |
205 | FocusWindows[dev->id] = NULL; | |
206 | } | |
207 | ||
208 | /** | |
209 | * Return the common ancestor of 'a' and 'b' (if one exists). | |
210 | * @param a A window with the same ancestor as b. | |
211 | * @param b A window with the same ancestor as a. | |
212 | * @return The window that is the first ancestor of both 'a' and 'b', or the | |
213 | * NullWindow if they do not have a common ancestor. | |
214 | */ | |
215 | WindowPtr | |
216 | CommonAncestor(WindowPtr a, WindowPtr b) | |
217 | { | |
218 | for (b = b->parent; b; b = b->parent) | |
219 | if (IsParent(b, a)) | |
220 | return b; | |
221 | return NullWindow; | |
222 | } | |
223 | ||
224 | /** | |
225 | * Send enter notifies to all windows between 'ancestor' and 'child' (excluding | |
226 | * both). Events are sent running up the window hierarchy. This function | |
227 | * recurses. | |
228 | */ | |
229 | static void | |
230 | DeviceEnterNotifies(DeviceIntPtr dev, | |
231 | int sourceid, | |
232 | WindowPtr ancestor, WindowPtr child, int mode, int detail) | |
233 | { | |
234 | WindowPtr parent = child->parent; | |
235 | ||
236 | if (ancestor == parent) | |
237 | return; | |
238 | DeviceEnterNotifies(dev, sourceid, ancestor, parent, mode, detail); | |
239 | DeviceEnterLeaveEvent(dev, sourceid, XI_Enter, mode, detail, parent, | |
240 | child->drawable.id); | |
241 | } | |
242 | ||
243 | /** | |
244 | * Send enter notifies to all windows between 'ancestor' and 'child' (excluding | |
245 | * both). Events are sent running down the window hierarchy. This function | |
246 | * recurses. | |
247 | */ | |
248 | static void | |
249 | CoreEnterNotifies(DeviceIntPtr dev, | |
250 | WindowPtr ancestor, WindowPtr child, int mode, int detail) | |
251 | { | |
252 | WindowPtr parent = child->parent; | |
253 | ||
254 | if (ancestor == parent) | |
255 | return; | |
256 | CoreEnterNotifies(dev, ancestor, parent, mode, detail); | |
257 | ||
258 | /* Case 3: | |
259 | A is above W, B is a descendant | |
260 | ||
261 | Classically: The move generates an EnterNotify on W with a detail of | |
262 | Virtual or NonlinearVirtual | |
263 | ||
264 | MPX: | |
265 | Case 3A: There is at least one other pointer on W itself | |
266 | P(W) doesn't change, so the event should be suppressed | |
267 | Case 3B: Otherwise, if there is at least one other pointer in a | |
268 | descendant | |
269 | P(W) stays on the same descendant, or changes to a different | |
270 | descendant. The event should be suppressed. | |
271 | Case 3C: Otherwise: | |
272 | P(W) moves from a window above W to a descendant. The subwindow | |
273 | field is set to the child containing the descendant. The detail | |
274 | may need to be changed from Virtual to NonlinearVirtual depending | |
275 | on the previous P(W). */ | |
276 | ||
277 | if (!HasPointer(dev, parent) && !FirstPointerChild(parent)) | |
278 | CoreEnterLeaveEvent(dev, EnterNotify, mode, detail, parent, | |
279 | child->drawable.id); | |
280 | } | |
281 | ||
282 | static void | |
283 | CoreLeaveNotifies(DeviceIntPtr dev, | |
284 | WindowPtr child, WindowPtr ancestor, int mode, int detail) | |
285 | { | |
286 | WindowPtr win; | |
287 | ||
288 | if (ancestor == child) | |
289 | return; | |
290 | ||
291 | for (win = child->parent; win != ancestor; win = win->parent) { | |
292 | /*Case 7: | |
293 | A is a descendant of W, B is above W | |
294 | ||
295 | Classically: A LeaveNotify is generated on W with a detail of Virtual | |
296 | or NonlinearVirtual. | |
297 | ||
298 | MPX: | |
299 | Case 3A: There is at least one other pointer on W itself | |
300 | P(W) doesn't change, the event should be suppressed. | |
301 | Case 3B: Otherwise, if there is at least one other pointer in a | |
302 | descendant | |
303 | P(W) stays on the same descendant, or changes to a different | |
304 | descendant. The event should be suppressed. | |
305 | Case 3C: Otherwise: | |
306 | P(W) changes from the descendant of W to a window above W. | |
307 | The detail may need to be changed from Virtual to NonlinearVirtual | |
308 | or vice-versa depending on the new P(W). */ | |
309 | ||
310 | /* If one window has a pointer or a child with a pointer, skip some | |
311 | * work and exit. */ | |
312 | if (HasPointer(dev, win) || FirstPointerChild(win)) | |
313 | return; | |
314 | ||
315 | CoreEnterLeaveEvent(dev, LeaveNotify, mode, detail, win, | |
316 | child->drawable.id); | |
317 | ||
318 | child = win; | |
319 | } | |
320 | } | |
321 | ||
322 | /** | |
323 | * Send leave notifies to all windows between 'child' and 'ancestor'. | |
324 | * Events are sent running up the hierarchy. | |
325 | */ | |
326 | static void | |
327 | DeviceLeaveNotifies(DeviceIntPtr dev, | |
328 | int sourceid, | |
329 | WindowPtr child, WindowPtr ancestor, int mode, int detail) | |
330 | { | |
331 | WindowPtr win; | |
332 | ||
333 | if (ancestor == child) | |
334 | return; | |
335 | for (win = child->parent; win != ancestor; win = win->parent) { | |
336 | DeviceEnterLeaveEvent(dev, sourceid, XI_Leave, mode, detail, win, | |
337 | child->drawable.id); | |
338 | child = win; | |
339 | } | |
340 | } | |
341 | ||
342 | /** | |
343 | * Pointer dev moves from A to B and A neither a descendant of B nor is | |
344 | * B a descendant of A. | |
345 | */ | |
346 | static void | |
347 | CoreEnterLeaveNonLinear(DeviceIntPtr dev, WindowPtr A, WindowPtr B, int mode) | |
348 | { | |
349 | WindowPtr X = CommonAncestor(A, B); | |
350 | ||
351 | /* Case 4: | |
352 | A is W, B is above W | |
353 | ||
354 | Classically: The move generates a LeaveNotify on W with a detail of | |
355 | Ancestor or Nonlinear | |
356 | ||
357 | MPX: | |
358 | Case 3A: There is at least one other pointer on W itself | |
359 | P(W) doesn't change, the event should be suppressed | |
360 | Case 3B: Otherwise, if there is at least one other pointer in a | |
361 | descendant of W | |
362 | P(W) changes from W to a descendant of W. The subwindow field | |
363 | is set to the child containing the new P(W), the detail field | |
364 | is set to Inferior | |
365 | Case 3C: Otherwise: | |
366 | The pointer window moves from W to a window above W. | |
367 | The detail may need to be changed from Ancestor to Nonlinear or | |
368 | vice versa depending on the the new P(W) | |
369 | */ | |
370 | ||
371 | if (!HasPointer(dev, A)) { | |
372 | WindowPtr child = FirstPointerChild(A); | |
373 | ||
374 | if (child) | |
375 | CoreEnterLeaveEvent(dev, LeaveNotify, mode, NotifyInferior, A, | |
376 | None); | |
377 | else | |
378 | CoreEnterLeaveEvent(dev, LeaveNotify, mode, NotifyNonlinear, A, | |
379 | None); | |
380 | } | |
381 | ||
382 | CoreLeaveNotifies(dev, A, X, mode, NotifyNonlinearVirtual); | |
383 | ||
384 | /* | |
385 | Case 9: | |
386 | A is a descendant of W, B is a descendant of W | |
387 | ||
388 | Classically: No events are generated on W | |
389 | MPX: The pointer window stays the same or moves to a different | |
390 | descendant of W. No events should be generated on W. | |
391 | ||
392 | Therefore, no event to X. | |
393 | */ | |
394 | ||
395 | CoreEnterNotifies(dev, X, B, mode, NotifyNonlinearVirtual); | |
396 | ||
397 | /* Case 2: | |
398 | A is above W, B=W | |
399 | ||
400 | Classically: The move generates an EnterNotify on W with a detail of | |
401 | Ancestor or Nonlinear | |
402 | ||
403 | MPX: | |
404 | Case 2A: There is at least one other pointer on W itself | |
405 | P(W) doesn't change, so the event should be suppressed | |
406 | Case 2B: Otherwise, if there is at least one other pointer in a | |
407 | descendant | |
408 | P(W) moves from a descendant to W. detail is changed to Inferior, | |
409 | subwindow is set to the child containing the previous P(W) | |
410 | Case 2C: Otherwise: | |
411 | P(W) changes from a window above W to W itself. | |
412 | The detail may need to be changed from Ancestor to Nonlinear | |
413 | or vice-versa depending on the previous P(W). */ | |
414 | ||
415 | if (!HasPointer(dev, B)) { | |
416 | WindowPtr child = FirstPointerChild(B); | |
417 | ||
418 | if (child) | |
419 | CoreEnterLeaveEvent(dev, EnterNotify, mode, NotifyInferior, B, | |
420 | None); | |
421 | else | |
422 | CoreEnterLeaveEvent(dev, EnterNotify, mode, NotifyNonlinear, B, | |
423 | None); | |
424 | } | |
425 | } | |
426 | ||
427 | /** | |
428 | * Pointer dev moves from A to B and A is a descendant of B. | |
429 | */ | |
430 | static void | |
431 | CoreEnterLeaveToAncestor(DeviceIntPtr dev, WindowPtr A, WindowPtr B, int mode) | |
432 | { | |
433 | /* Case 4: | |
434 | A is W, B is above W | |
435 | ||
436 | Classically: The move generates a LeaveNotify on W with a detail of | |
437 | Ancestor or Nonlinear | |
438 | ||
439 | MPX: | |
440 | Case 3A: There is at least one other pointer on W itself | |
441 | P(W) doesn't change, the event should be suppressed | |
442 | Case 3B: Otherwise, if there is at least one other pointer in a | |
443 | descendant of W | |
444 | P(W) changes from W to a descendant of W. The subwindow field | |
445 | is set to the child containing the new P(W), the detail field | |
446 | is set to Inferior | |
447 | Case 3C: Otherwise: | |
448 | The pointer window moves from W to a window above W. | |
449 | The detail may need to be changed from Ancestor to Nonlinear or | |
450 | vice versa depending on the the new P(W) | |
451 | */ | |
452 | if (!HasPointer(dev, A)) { | |
453 | WindowPtr child = FirstPointerChild(A); | |
454 | ||
455 | if (child) | |
456 | CoreEnterLeaveEvent(dev, LeaveNotify, mode, NotifyInferior, A, | |
457 | None); | |
458 | else | |
459 | CoreEnterLeaveEvent(dev, LeaveNotify, mode, NotifyAncestor, A, | |
460 | None); | |
461 | } | |
462 | ||
463 | CoreLeaveNotifies(dev, A, B, mode, NotifyVirtual); | |
464 | ||
465 | /* Case 8: | |
466 | A is a descendant of W, B is W | |
467 | ||
468 | Classically: A EnterNotify is generated on W with a detail of | |
469 | NotifyInferior | |
470 | ||
471 | MPX: | |
472 | Case 3A: There is at least one other pointer on W itself | |
473 | P(W) doesn't change, the event should be suppressed | |
474 | Case 3B: Otherwise: | |
475 | P(W) changes from a descendant to W itself. The subwindow | |
476 | field should be set to the child containing the old P(W) <<< WRONG */ | |
477 | ||
478 | if (!HasPointer(dev, B)) | |
479 | CoreEnterLeaveEvent(dev, EnterNotify, mode, NotifyInferior, B, None); | |
480 | ||
481 | } | |
482 | ||
483 | /** | |
484 | * Pointer dev moves from A to B and B is a descendant of A. | |
485 | */ | |
486 | static void | |
487 | CoreEnterLeaveToDescendant(DeviceIntPtr dev, WindowPtr A, WindowPtr B, int mode) | |
488 | { | |
489 | /* Case 6: | |
490 | A is W, B is a descendant of W | |
491 | ||
492 | Classically: A LeaveNotify is generated on W with a detail of | |
493 | NotifyInferior | |
494 | ||
495 | MPX: | |
496 | Case 3A: There is at least one other pointer on W itself | |
497 | P(W) doesn't change, the event should be suppressed | |
498 | Case 3B: Otherwise: | |
499 | P(W) changes from W to a descendant of W. The subwindow field | |
500 | is set to the child containing the new P(W) <<< THIS IS WRONG */ | |
501 | ||
502 | if (!HasPointer(dev, A)) | |
503 | CoreEnterLeaveEvent(dev, LeaveNotify, mode, NotifyInferior, A, None); | |
504 | ||
505 | CoreEnterNotifies(dev, A, B, mode, NotifyVirtual); | |
506 | ||
507 | /* Case 2: | |
508 | A is above W, B=W | |
509 | ||
510 | Classically: The move generates an EnterNotify on W with a detail of | |
511 | Ancestor or Nonlinear | |
512 | ||
513 | MPX: | |
514 | Case 2A: There is at least one other pointer on W itself | |
515 | P(W) doesn't change, so the event should be suppressed | |
516 | Case 2B: Otherwise, if there is at least one other pointer in a | |
517 | descendant | |
518 | P(W) moves from a descendant to W. detail is changed to Inferior, | |
519 | subwindow is set to the child containing the previous P(W) | |
520 | Case 2C: Otherwise: | |
521 | P(W) changes from a window above W to W itself. | |
522 | The detail may need to be changed from Ancestor to Nonlinear | |
523 | or vice-versa depending on the previous P(W). */ | |
524 | ||
525 | if (!HasPointer(dev, B)) { | |
526 | WindowPtr child = FirstPointerChild(B); | |
527 | ||
528 | if (child) | |
529 | CoreEnterLeaveEvent(dev, EnterNotify, mode, NotifyInferior, B, | |
530 | None); | |
531 | else | |
532 | CoreEnterLeaveEvent(dev, EnterNotify, mode, NotifyAncestor, B, | |
533 | None); | |
534 | } | |
535 | } | |
536 | ||
537 | static void | |
538 | CoreEnterLeaveEvents(DeviceIntPtr dev, WindowPtr from, WindowPtr to, int mode) | |
539 | { | |
540 | if (!IsMaster(dev)) | |
541 | return; | |
542 | ||
543 | LeaveWindow(dev); | |
544 | ||
545 | if (IsParent(from, to)) | |
546 | CoreEnterLeaveToDescendant(dev, from, to, mode); | |
547 | else if (IsParent(to, from)) | |
548 | CoreEnterLeaveToAncestor(dev, from, to, mode); | |
549 | else | |
550 | CoreEnterLeaveNonLinear(dev, from, to, mode); | |
551 | ||
552 | EnterWindow(dev, to, mode); | |
553 | } | |
554 | ||
555 | static void | |
556 | DeviceEnterLeaveEvents(DeviceIntPtr dev, | |
557 | int sourceid, WindowPtr from, WindowPtr to, int mode) | |
558 | { | |
559 | if (IsParent(from, to)) { | |
560 | DeviceEnterLeaveEvent(dev, sourceid, XI_Leave, mode, NotifyInferior, | |
561 | from, None); | |
562 | DeviceEnterNotifies(dev, sourceid, from, to, mode, NotifyVirtual); | |
563 | DeviceEnterLeaveEvent(dev, sourceid, XI_Enter, mode, NotifyAncestor, to, | |
564 | None); | |
565 | } | |
566 | else if (IsParent(to, from)) { | |
567 | DeviceEnterLeaveEvent(dev, sourceid, XI_Leave, mode, NotifyAncestor, | |
568 | from, None); | |
569 | DeviceLeaveNotifies(dev, sourceid, from, to, mode, NotifyVirtual); | |
570 | DeviceEnterLeaveEvent(dev, sourceid, XI_Enter, mode, NotifyInferior, to, | |
571 | None); | |
572 | } | |
573 | else { /* neither from nor to is descendent of the other */ | |
574 | WindowPtr common = CommonAncestor(to, from); | |
575 | ||
576 | /* common == NullWindow ==> different screens */ | |
577 | DeviceEnterLeaveEvent(dev, sourceid, XI_Leave, mode, NotifyNonlinear, | |
578 | from, None); | |
579 | DeviceLeaveNotifies(dev, sourceid, from, common, mode, | |
580 | NotifyNonlinearVirtual); | |
581 | DeviceEnterNotifies(dev, sourceid, common, to, mode, | |
582 | NotifyNonlinearVirtual); | |
583 | DeviceEnterLeaveEvent(dev, sourceid, XI_Enter, mode, NotifyNonlinear, | |
584 | to, None); | |
585 | } | |
586 | } | |
587 | ||
588 | /** | |
589 | * Figure out if enter/leave events are necessary and send them to the | |
590 | * appropriate windows. | |
591 | * | |
592 | * @param fromWin Window the sprite moved out of. | |
593 | * @param toWin Window the sprite moved into. | |
594 | */ | |
595 | void | |
596 | DoEnterLeaveEvents(DeviceIntPtr pDev, | |
597 | int sourceid, WindowPtr fromWin, WindowPtr toWin, int mode) | |
598 | { | |
599 | if (!IsPointerDevice(pDev)) | |
600 | return; | |
601 | ||
602 | if (fromWin == toWin) | |
603 | return; | |
604 | ||
605 | if (mode != XINotifyPassiveGrab && mode != XINotifyPassiveUngrab) | |
606 | CoreEnterLeaveEvents(pDev, fromWin, toWin, mode); | |
607 | DeviceEnterLeaveEvents(pDev, sourceid, fromWin, toWin, mode); | |
608 | } | |
609 | ||
610 | static void | |
611 | FixDeviceValuator(DeviceIntPtr dev, deviceValuator * ev, ValuatorClassPtr v, | |
612 | int first) | |
613 | { | |
614 | int nval = v->numAxes - first; | |
615 | ||
616 | ev->type = DeviceValuator; | |
617 | ev->deviceid = dev->id; | |
618 | ev->num_valuators = nval < 3 ? nval : 3; | |
619 | ev->first_valuator = first; | |
620 | switch (ev->num_valuators) { | |
621 | case 3: | |
622 | ev->valuator2 = v->axisVal[first + 2]; | |
623 | case 2: | |
624 | ev->valuator1 = v->axisVal[first + 1]; | |
625 | case 1: | |
626 | ev->valuator0 = v->axisVal[first]; | |
627 | break; | |
628 | } | |
629 | first += ev->num_valuators; | |
630 | } | |
631 | ||
632 | static void | |
633 | FixDeviceStateNotify(DeviceIntPtr dev, deviceStateNotify * ev, KeyClassPtr k, | |
634 | ButtonClassPtr b, ValuatorClassPtr v, int first) | |
635 | { | |
636 | ev->type = DeviceStateNotify; | |
637 | ev->deviceid = dev->id; | |
638 | ev->time = currentTime.milliseconds; | |
639 | ev->classes_reported = 0; | |
640 | ev->num_keys = 0; | |
641 | ev->num_buttons = 0; | |
642 | ev->num_valuators = 0; | |
643 | ||
644 | if (b) { | |
645 | ev->classes_reported |= (1 << ButtonClass); | |
646 | ev->num_buttons = b->numButtons; | |
647 | memcpy((char *) ev->buttons, (char *) b->down, 4); | |
648 | } | |
649 | else if (k) { | |
650 | ev->classes_reported |= (1 << KeyClass); | |
651 | ev->num_keys = k->xkbInfo->desc->max_key_code - | |
652 | k->xkbInfo->desc->min_key_code; | |
653 | memmove((char *) &ev->keys[0], (char *) k->down, 4); | |
654 | } | |
655 | if (v) { | |
656 | int nval = v->numAxes - first; | |
657 | ||
658 | ev->classes_reported |= (1 << ValuatorClass); | |
659 | ev->classes_reported |= valuator_get_mode(dev, 0) << ModeBitsShift; | |
660 | ev->num_valuators = nval < 3 ? nval : 3; | |
661 | switch (ev->num_valuators) { | |
662 | case 3: | |
663 | ev->valuator2 = v->axisVal[first + 2]; | |
664 | case 2: | |
665 | ev->valuator1 = v->axisVal[first + 1]; | |
666 | case 1: | |
667 | ev->valuator0 = v->axisVal[first]; | |
668 | break; | |
669 | } | |
670 | } | |
671 | } | |
672 | ||
673 | ||
674 | static void | |
675 | DeliverStateNotifyEvent(DeviceIntPtr dev, WindowPtr win) | |
676 | { | |
677 | int evcount = 1; | |
678 | deviceStateNotify *ev, *sev; | |
679 | deviceKeyStateNotify *kev; | |
680 | deviceButtonStateNotify *bev; | |
681 | ||
682 | KeyClassPtr k; | |
683 | ButtonClassPtr b; | |
684 | ValuatorClassPtr v; | |
685 | int nval = 0, nkeys = 0, nbuttons = 0, first = 0; | |
686 | ||
687 | if (!(wOtherInputMasks(win)) || | |
688 | !(wOtherInputMasks(win)->inputEvents[dev->id] & DeviceStateNotifyMask)) | |
689 | return; | |
690 | ||
691 | if ((b = dev->button) != NULL) { | |
692 | nbuttons = b->numButtons; | |
693 | if (nbuttons > 32) | |
694 | evcount++; | |
695 | } | |
696 | if ((k = dev->key) != NULL) { | |
697 | nkeys = k->xkbInfo->desc->max_key_code - k->xkbInfo->desc->min_key_code; | |
698 | if (nkeys > 32) | |
699 | evcount++; | |
700 | if (nbuttons > 0) { | |
701 | evcount++; | |
702 | } | |
703 | } | |
704 | if ((v = dev->valuator) != NULL) { | |
705 | nval = v->numAxes; | |
706 | ||
707 | if (nval > 3) | |
708 | evcount++; | |
709 | if (nval > 6) { | |
710 | if (!(k && b)) | |
711 | evcount++; | |
712 | if (nval > 9) | |
713 | evcount += ((nval - 7) / 3); | |
714 | } | |
715 | } | |
716 | ||
717 | sev = ev = (deviceStateNotify *) malloc(evcount * sizeof(xEvent)); | |
718 | FixDeviceStateNotify(dev, ev, NULL, NULL, NULL, first); | |
719 | ||
720 | if (b != NULL) { | |
721 | FixDeviceStateNotify(dev, ev++, NULL, b, v, first); | |
722 | first += 3; | |
723 | nval -= 3; | |
724 | if (nbuttons > 32) { | |
725 | (ev - 1)->deviceid |= MORE_EVENTS; | |
726 | bev = (deviceButtonStateNotify *) ev++; | |
727 | bev->type = DeviceButtonStateNotify; | |
728 | bev->deviceid = dev->id; | |
729 | memcpy((char *) &bev->buttons[4], (char *) &b->down[4], | |
730 | DOWN_LENGTH - 4); | |
731 | } | |
732 | if (nval > 0) { | |
733 | (ev - 1)->deviceid |= MORE_EVENTS; | |
734 | FixDeviceValuator(dev, (deviceValuator *) ev++, v, first); | |
735 | first += 3; | |
736 | nval -= 3; | |
737 | } | |
738 | } | |
739 | ||
740 | if (k != NULL) { | |
741 | FixDeviceStateNotify(dev, ev++, k, NULL, v, first); | |
742 | first += 3; | |
743 | nval -= 3; | |
744 | if (nkeys > 32) { | |
745 | (ev - 1)->deviceid |= MORE_EVENTS; | |
746 | kev = (deviceKeyStateNotify *) ev++; | |
747 | kev->type = DeviceKeyStateNotify; | |
748 | kev->deviceid = dev->id; | |
749 | memmove((char *) &kev->keys[0], (char *) &k->down[4], 28); | |
750 | } | |
751 | if (nval > 0) { | |
752 | (ev - 1)->deviceid |= MORE_EVENTS; | |
753 | FixDeviceValuator(dev, (deviceValuator *) ev++, v, first); | |
754 | first += 3; | |
755 | nval -= 3; | |
756 | } | |
757 | } | |
758 | ||
759 | while (nval > 0) { | |
760 | FixDeviceStateNotify(dev, ev++, NULL, NULL, v, first); | |
761 | first += 3; | |
762 | nval -= 3; | |
763 | if (nval > 0) { | |
764 | (ev - 1)->deviceid |= MORE_EVENTS; | |
765 | FixDeviceValuator(dev, (deviceValuator *) ev++, v, first); | |
766 | first += 3; | |
767 | nval -= 3; | |
768 | } | |
769 | } | |
770 | ||
771 | DeliverEventsToWindow(dev, win, (xEvent *) sev, evcount, | |
772 | DeviceStateNotifyMask, NullGrab); | |
773 | free(sev); | |
774 | } | |
775 | ||
776 | void | |
777 | DeviceFocusEvent(DeviceIntPtr dev, int type, int mode, int detail, | |
778 | WindowPtr pWin) | |
779 | { | |
780 | deviceFocus event; | |
781 | xXIFocusInEvent *xi2event; | |
782 | DeviceIntPtr mouse; | |
783 | int btlen, len, i; | |
784 | ||
785 | mouse = IsFloating(dev) ? dev : GetMaster(dev, MASTER_POINTER); | |
786 | ||
787 | /* XI 2 event */ | |
788 | btlen = (mouse->button) ? bits_to_bytes(mouse->button->numButtons) : 0; | |
789 | btlen = bytes_to_int32(btlen); | |
790 | len = sizeof(xXIFocusInEvent) + btlen * 4; | |
791 | ||
792 | xi2event = calloc(1, len); | |
793 | xi2event->type = GenericEvent; | |
794 | xi2event->extension = IReqCode; | |
795 | xi2event->evtype = type; | |
796 | xi2event->length = bytes_to_int32(len - sizeof(xEvent)); | |
797 | xi2event->buttons_len = btlen; | |
798 | xi2event->detail = detail; | |
799 | xi2event->time = currentTime.milliseconds; | |
800 | xi2event->deviceid = dev->id; | |
801 | xi2event->sourceid = dev->id; /* a device doesn't change focus by itself */ | |
802 | xi2event->mode = mode; | |
803 | xi2event->root_x = double_to_fp1616(mouse->spriteInfo->sprite->hot.x); | |
804 | xi2event->root_y = double_to_fp1616(mouse->spriteInfo->sprite->hot.y); | |
805 | ||
806 | for (i = 0; mouse && mouse->button && i < mouse->button->numButtons; i++) | |
807 | if (BitIsOn(mouse->button->down, i)) | |
808 | SetBit(&xi2event[1], mouse->button->map[i]); | |
809 | ||
810 | if (dev->key) { | |
811 | xi2event->mods.base_mods = dev->key->xkbInfo->state.base_mods; | |
812 | xi2event->mods.latched_mods = dev->key->xkbInfo->state.latched_mods; | |
813 | xi2event->mods.locked_mods = dev->key->xkbInfo->state.locked_mods; | |
814 | xi2event->mods.effective_mods = dev->key->xkbInfo->state.mods; | |
815 | ||
816 | xi2event->group.base_group = dev->key->xkbInfo->state.base_group; | |
817 | xi2event->group.latched_group = dev->key->xkbInfo->state.latched_group; | |
818 | xi2event->group.locked_group = dev->key->xkbInfo->state.locked_group; | |
819 | xi2event->group.effective_group = dev->key->xkbInfo->state.group; | |
820 | } | |
821 | ||
822 | FixUpEventFromWindow(dev->spriteInfo->sprite, (xEvent *) xi2event, pWin, | |
823 | None, FALSE); | |
824 | ||
825 | DeliverEventsToWindow(dev, pWin, (xEvent *) xi2event, 1, | |
826 | GetEventFilter(dev, (xEvent *) xi2event), NullGrab); | |
827 | ||
828 | free(xi2event); | |
829 | ||
830 | /* XI 1.x event */ | |
831 | event = (deviceFocus) { | |
832 | .deviceid = dev->id, | |
833 | .mode = mode, | |
834 | .type = (type == XI_FocusIn) ? DeviceFocusIn : DeviceFocusOut, | |
835 | .detail = detail, | |
836 | .window = pWin->drawable.id, | |
837 | .time = currentTime.milliseconds | |
838 | }; | |
839 | ||
840 | DeliverEventsToWindow(dev, pWin, (xEvent *) &event, 1, | |
841 | DeviceFocusChangeMask, NullGrab); | |
842 | ||
843 | if (event.type == DeviceFocusIn) | |
844 | DeliverStateNotifyEvent(dev, pWin); | |
845 | } | |
846 | ||
847 | /** | |
848 | * Send focus out events to all windows between 'child' and 'ancestor'. | |
849 | * Events are sent running up the hierarchy. | |
850 | */ | |
851 | static void | |
852 | DeviceFocusOutEvents(DeviceIntPtr dev, | |
853 | WindowPtr child, WindowPtr ancestor, int mode, int detail) | |
854 | { | |
855 | WindowPtr win; | |
856 | ||
857 | if (ancestor == child) | |
858 | return; | |
859 | for (win = child->parent; win != ancestor; win = win->parent) | |
860 | DeviceFocusEvent(dev, XI_FocusOut, mode, detail, win); | |
861 | } | |
862 | ||
863 | /** | |
864 | * Send enter notifies to all windows between 'ancestor' and 'child' (excluding | |
865 | * both). Events are sent running up the window hierarchy. This function | |
866 | * recurses. | |
867 | */ | |
868 | static void | |
869 | DeviceFocusInEvents(DeviceIntPtr dev, | |
870 | WindowPtr ancestor, WindowPtr child, int mode, int detail) | |
871 | { | |
872 | WindowPtr parent = child->parent; | |
873 | ||
874 | if (ancestor == parent || !parent) | |
875 | return; | |
876 | DeviceFocusInEvents(dev, ancestor, parent, mode, detail); | |
877 | DeviceFocusEvent(dev, XI_FocusIn, mode, detail, parent); | |
878 | } | |
879 | ||
880 | /** | |
881 | * Send FocusIn events to all windows between 'ancestor' and 'child' (excluding | |
882 | * both). Events are sent running down the window hierarchy. This function | |
883 | * recurses. | |
884 | */ | |
885 | static void | |
886 | CoreFocusInEvents(DeviceIntPtr dev, | |
887 | WindowPtr ancestor, WindowPtr child, int mode, int detail) | |
888 | { | |
889 | WindowPtr parent = child->parent; | |
890 | ||
891 | if (ancestor == parent) | |
892 | return; | |
893 | CoreFocusInEvents(dev, ancestor, parent, mode, detail); | |
894 | ||
895 | /* Case 3: | |
896 | A is above W, B is a descendant | |
897 | ||
898 | Classically: The move generates an FocusIn on W with a detail of | |
899 | Virtual or NonlinearVirtual | |
900 | ||
901 | MPX: | |
902 | Case 3A: There is at least one other focus on W itself | |
903 | F(W) doesn't change, so the event should be suppressed | |
904 | Case 3B: Otherwise, if there is at least one other focus in a | |
905 | descendant | |
906 | F(W) stays on the same descendant, or changes to a different | |
907 | descendant. The event should be suppressed. | |
908 | Case 3C: Otherwise: | |
909 | F(W) moves from a window above W to a descendant. The detail may | |
910 | need to be changed from Virtual to NonlinearVirtual depending | |
911 | on the previous F(W). */ | |
912 | ||
913 | if (!HasFocus(parent) && !FirstFocusChild(parent)) | |
914 | CoreFocusEvent(dev, FocusIn, mode, detail, parent); | |
915 | } | |
916 | ||
917 | static void | |
918 | CoreFocusOutEvents(DeviceIntPtr dev, | |
919 | WindowPtr child, WindowPtr ancestor, int mode, int detail) | |
920 | { | |
921 | WindowPtr win; | |
922 | ||
923 | if (ancestor == child) | |
924 | return; | |
925 | ||
926 | for (win = child->parent; win != ancestor; win = win->parent) { | |
927 | /*Case 7: | |
928 | A is a descendant of W, B is above W | |
929 | ||
930 | Classically: A FocusOut is generated on W with a detail of Virtual | |
931 | or NonlinearVirtual. | |
932 | ||
933 | MPX: | |
934 | Case 3A: There is at least one other focus on W itself | |
935 | F(W) doesn't change, the event should be suppressed. | |
936 | Case 3B: Otherwise, if there is at least one other focus in a | |
937 | descendant | |
938 | F(W) stays on the same descendant, or changes to a different | |
939 | descendant. The event should be suppressed. | |
940 | Case 3C: Otherwise: | |
941 | F(W) changes from the descendant of W to a window above W. | |
942 | The detail may need to be changed from Virtual to NonlinearVirtual | |
943 | or vice-versa depending on the new P(W). */ | |
944 | ||
945 | /* If one window has a focus or a child with a focuspointer, skip some | |
946 | * work and exit. */ | |
947 | if (HasFocus(win) || FirstFocusChild(win)) | |
948 | return; | |
949 | ||
950 | CoreFocusEvent(dev, FocusOut, mode, detail, win); | |
951 | } | |
952 | } | |
953 | ||
954 | /** | |
955 | * Send FocusOut(NotifyPointer) events from the current pointer window (which | |
956 | * is a descendant of pwin_parent) up to (excluding) pwin_parent. | |
957 | * | |
958 | * NotifyPointer events are only sent for the device paired with dev. | |
959 | * | |
960 | * If the current pointer window is a descendant of 'exclude' or an ancestor of | |
961 | * 'exclude', no events are sent. If the current pointer IS 'exclude', events | |
962 | * are sent! | |
963 | */ | |
964 | static void | |
965 | CoreFocusOutNotifyPointerEvents(DeviceIntPtr dev, | |
966 | WindowPtr pwin_parent, | |
967 | WindowPtr exclude, int mode, int inclusive) | |
968 | { | |
969 | WindowPtr P, stopAt; | |
970 | ||
971 | P = PointerWin(GetMaster(dev, POINTER_OR_FLOAT)); | |
972 | ||
973 | if (!P) | |
974 | return; | |
975 | if (!IsParent(pwin_parent, P)) | |
976 | if (!(pwin_parent == P && inclusive)) | |
977 | return; | |
978 | ||
979 | if (exclude != None && exclude != PointerRootWin && | |
980 | (IsParent(exclude, P) || IsParent(P, exclude))) | |
981 | return; | |
982 | ||
983 | stopAt = (inclusive) ? pwin_parent->parent : pwin_parent; | |
984 | ||
985 | for (; P && P != stopAt; P = P->parent) | |
986 | CoreFocusEvent(dev, FocusOut, mode, NotifyPointer, P); | |
987 | } | |
988 | ||
989 | /** | |
990 | * DO NOT CALL DIRECTLY. | |
991 | * Recursion helper for CoreFocusInNotifyPointerEvents. | |
992 | */ | |
993 | static void | |
994 | CoreFocusInRecurse(DeviceIntPtr dev, | |
995 | WindowPtr win, WindowPtr stopAt, int mode, int inclusive) | |
996 | { | |
997 | if ((!inclusive && win == stopAt) || !win) | |
998 | return; | |
999 | ||
1000 | CoreFocusInRecurse(dev, win->parent, stopAt, mode, inclusive); | |
1001 | CoreFocusEvent(dev, FocusIn, mode, NotifyPointer, win); | |
1002 | } | |
1003 | ||
1004 | /** | |
1005 | * Send FocusIn(NotifyPointer) events from pwin_parent down to | |
1006 | * including the current pointer window (which is a descendant of pwin_parent). | |
1007 | * | |
1008 | * @param pwin The pointer window. | |
1009 | * @param exclude If the pointer window is a child of 'exclude', no events are | |
1010 | * sent. | |
1011 | * @param inclusive If TRUE, pwin_parent will receive the event too. | |
1012 | */ | |
1013 | static void | |
1014 | CoreFocusInNotifyPointerEvents(DeviceIntPtr dev, | |
1015 | WindowPtr pwin_parent, | |
1016 | WindowPtr exclude, int mode, int inclusive) | |
1017 | { | |
1018 | WindowPtr P; | |
1019 | ||
1020 | P = PointerWin(GetMaster(dev, POINTER_OR_FLOAT)); | |
1021 | ||
1022 | if (!P || P == exclude || (pwin_parent != P && !IsParent(pwin_parent, P))) | |
1023 | return; | |
1024 | ||
1025 | if (exclude != None && (IsParent(exclude, P) || IsParent(P, exclude))) | |
1026 | return; | |
1027 | ||
1028 | CoreFocusInRecurse(dev, P, pwin_parent, mode, inclusive); | |
1029 | } | |
1030 | ||
1031 | /** | |
1032 | * Focus of dev moves from A to B and A neither a descendant of B nor is | |
1033 | * B a descendant of A. | |
1034 | */ | |
1035 | static void | |
1036 | CoreFocusNonLinear(DeviceIntPtr dev, WindowPtr A, WindowPtr B, int mode) | |
1037 | { | |
1038 | WindowPtr X = CommonAncestor(A, B); | |
1039 | ||
1040 | /* Case 4: | |
1041 | A is W, B is above W | |
1042 | ||
1043 | Classically: The change generates a FocusOut on W with a detail of | |
1044 | Ancestor or Nonlinear | |
1045 | ||
1046 | MPX: | |
1047 | Case 3A: There is at least one other focus on W itself | |
1048 | F(W) doesn't change, the event should be suppressed | |
1049 | Case 3B: Otherwise, if there is at least one other focus in a | |
1050 | descendant of W | |
1051 | F(W) changes from W to a descendant of W. The detail field | |
1052 | is set to Inferior | |
1053 | Case 3C: Otherwise: | |
1054 | The focus window moves from W to a window above W. | |
1055 | The detail may need to be changed from Ancestor to Nonlinear or | |
1056 | vice versa depending on the the new F(W) | |
1057 | */ | |
1058 | ||
1059 | if (!HasFocus(A)) { | |
1060 | WindowPtr child = FirstFocusChild(A); | |
1061 | ||
1062 | if (child) { | |
1063 | /* NotifyPointer P-A unless P is child or below */ | |
1064 | CoreFocusOutNotifyPointerEvents(dev, A, child, mode, FALSE); | |
1065 | CoreFocusEvent(dev, FocusOut, mode, NotifyInferior, A); | |
1066 | } | |
1067 | else { | |
1068 | /* NotifyPointer P-A */ | |
1069 | CoreFocusOutNotifyPointerEvents(dev, A, None, mode, FALSE); | |
1070 | CoreFocusEvent(dev, FocusOut, mode, NotifyNonlinear, A); | |
1071 | } | |
1072 | } | |
1073 | ||
1074 | CoreFocusOutEvents(dev, A, X, mode, NotifyNonlinearVirtual); | |
1075 | ||
1076 | /* | |
1077 | Case 9: | |
1078 | A is a descendant of W, B is a descendant of W | |
1079 | ||
1080 | Classically: No events are generated on W | |
1081 | MPX: The focus window stays the same or moves to a different | |
1082 | descendant of W. No events should be generated on W. | |
1083 | ||
1084 | Therefore, no event to X. | |
1085 | */ | |
1086 | ||
1087 | CoreFocusInEvents(dev, X, B, mode, NotifyNonlinearVirtual); | |
1088 | ||
1089 | /* Case 2: | |
1090 | A is above W, B=W | |
1091 | ||
1092 | Classically: The move generates an EnterNotify on W with a detail of | |
1093 | Ancestor or Nonlinear | |
1094 | ||
1095 | MPX: | |
1096 | Case 2A: There is at least one other focus on W itself | |
1097 | F(W) doesn't change, so the event should be suppressed | |
1098 | Case 2B: Otherwise, if there is at least one other focus in a | |
1099 | descendant | |
1100 | F(W) moves from a descendant to W. detail is changed to Inferior. | |
1101 | Case 2C: Otherwise: | |
1102 | F(W) changes from a window above W to W itself. | |
1103 | The detail may need to be changed from Ancestor to Nonlinear | |
1104 | or vice-versa depending on the previous F(W). */ | |
1105 | ||
1106 | if (!HasFocus(B)) { | |
1107 | WindowPtr child = FirstFocusChild(B); | |
1108 | ||
1109 | if (child) { | |
1110 | CoreFocusEvent(dev, FocusIn, mode, NotifyInferior, B); | |
1111 | /* NotifyPointer B-P unless P is child or below. */ | |
1112 | CoreFocusInNotifyPointerEvents(dev, B, child, mode, FALSE); | |
1113 | } | |
1114 | else { | |
1115 | CoreFocusEvent(dev, FocusIn, mode, NotifyNonlinear, B); | |
1116 | /* NotifyPointer B-P unless P is child or below. */ | |
1117 | CoreFocusInNotifyPointerEvents(dev, B, None, mode, FALSE); | |
1118 | } | |
1119 | } | |
1120 | } | |
1121 | ||
1122 | /** | |
1123 | * Focus of dev moves from A to B and A is a descendant of B. | |
1124 | */ | |
1125 | static void | |
1126 | CoreFocusToAncestor(DeviceIntPtr dev, WindowPtr A, WindowPtr B, int mode) | |
1127 | { | |
1128 | /* Case 4: | |
1129 | A is W, B is above W | |
1130 | ||
1131 | Classically: The change generates a FocusOut on W with a detail of | |
1132 | Ancestor or Nonlinear | |
1133 | ||
1134 | MPX: | |
1135 | Case 3A: There is at least one other focus on W itself | |
1136 | F(W) doesn't change, the event should be suppressed | |
1137 | Case 3B: Otherwise, if there is at least one other focus in a | |
1138 | descendant of W | |
1139 | F(W) changes from W to a descendant of W. The detail field | |
1140 | is set to Inferior | |
1141 | Case 3C: Otherwise: | |
1142 | The focus window moves from W to a window above W. | |
1143 | The detail may need to be changed from Ancestor to Nonlinear or | |
1144 | vice versa depending on the the new F(W) | |
1145 | */ | |
1146 | if (!HasFocus(A)) { | |
1147 | WindowPtr child = FirstFocusChild(A); | |
1148 | ||
1149 | if (child) { | |
1150 | /* NotifyPointer P-A unless P is child or below */ | |
1151 | CoreFocusOutNotifyPointerEvents(dev, A, child, mode, FALSE); | |
1152 | CoreFocusEvent(dev, FocusOut, mode, NotifyInferior, A); | |
1153 | } | |
1154 | else | |
1155 | CoreFocusEvent(dev, FocusOut, mode, NotifyAncestor, A); | |
1156 | } | |
1157 | ||
1158 | CoreFocusOutEvents(dev, A, B, mode, NotifyVirtual); | |
1159 | ||
1160 | /* Case 8: | |
1161 | A is a descendant of W, B is W | |
1162 | ||
1163 | Classically: A FocusOut is generated on W with a detail of | |
1164 | NotifyInferior | |
1165 | ||
1166 | MPX: | |
1167 | Case 3A: There is at least one other focus on W itself | |
1168 | F(W) doesn't change, the event should be suppressed | |
1169 | Case 3B: Otherwise: | |
1170 | F(W) changes from a descendant to W itself. */ | |
1171 | ||
1172 | if (!HasFocus(B)) { | |
1173 | CoreFocusEvent(dev, FocusIn, mode, NotifyInferior, B); | |
1174 | /* NotifyPointer B-P unless P is A or below. */ | |
1175 | CoreFocusInNotifyPointerEvents(dev, B, A, mode, FALSE); | |
1176 | } | |
1177 | } | |
1178 | ||
1179 | /** | |
1180 | * Focus of dev moves from A to B and B is a descendant of A. | |
1181 | */ | |
1182 | static void | |
1183 | CoreFocusToDescendant(DeviceIntPtr dev, WindowPtr A, WindowPtr B, int mode) | |
1184 | { | |
1185 | /* Case 6: | |
1186 | A is W, B is a descendant of W | |
1187 | ||
1188 | Classically: A FocusOut is generated on W with a detail of | |
1189 | NotifyInferior | |
1190 | ||
1191 | MPX: | |
1192 | Case 3A: There is at least one other focus on W itself | |
1193 | F(W) doesn't change, the event should be suppressed | |
1194 | Case 3B: Otherwise: | |
1195 | F(W) changes from W to a descendant of W. */ | |
1196 | ||
1197 | if (!HasFocus(A)) { | |
1198 | /* NotifyPointer P-A unless P is B or below */ | |
1199 | CoreFocusOutNotifyPointerEvents(dev, A, B, mode, FALSE); | |
1200 | CoreFocusEvent(dev, FocusOut, mode, NotifyInferior, A); | |
1201 | } | |
1202 | ||
1203 | CoreFocusInEvents(dev, A, B, mode, NotifyVirtual); | |
1204 | ||
1205 | /* Case 2: | |
1206 | A is above W, B=W | |
1207 | ||
1208 | Classically: The move generates an FocusIn on W with a detail of | |
1209 | Ancestor or Nonlinear | |
1210 | ||
1211 | MPX: | |
1212 | Case 2A: There is at least one other focus on W itself | |
1213 | F(W) doesn't change, so the event should be suppressed | |
1214 | Case 2B: Otherwise, if there is at least one other focus in a | |
1215 | descendant | |
1216 | F(W) moves from a descendant to W. detail is changed to Inferior. | |
1217 | Case 2C: Otherwise: | |
1218 | F(W) changes from a window above W to W itself. | |
1219 | The detail may need to be changed from Ancestor to Nonlinear | |
1220 | or vice-versa depending on the previous F(W). */ | |
1221 | ||
1222 | if (!HasFocus(B)) { | |
1223 | WindowPtr child = FirstFocusChild(B); | |
1224 | ||
1225 | if (child) { | |
1226 | CoreFocusEvent(dev, FocusIn, mode, NotifyInferior, B); | |
1227 | /* NotifyPointer B-P unless P is child or below. */ | |
1228 | CoreFocusInNotifyPointerEvents(dev, B, child, mode, FALSE); | |
1229 | } | |
1230 | else | |
1231 | CoreFocusEvent(dev, FocusIn, mode, NotifyAncestor, B); | |
1232 | } | |
1233 | } | |
1234 | ||
1235 | static BOOL | |
1236 | HasOtherPointer(WindowPtr win, DeviceIntPtr exclude) | |
1237 | { | |
1238 | int i; | |
1239 | ||
1240 | for (i = 0; i < MAXDEVICES; i++) | |
1241 | if (i != exclude->id && PointerWindows[i] == win) | |
1242 | return TRUE; | |
1243 | ||
1244 | return FALSE; | |
1245 | } | |
1246 | ||
1247 | /** | |
1248 | * Focus moves from PointerRoot to None or from None to PointerRoot. | |
1249 | * Assumption: Neither A nor B are valid windows. | |
1250 | */ | |
1251 | static void | |
1252 | CoreFocusPointerRootNoneSwitch(DeviceIntPtr dev, | |
1253 | WindowPtr A, /* PointerRootWin or NoneWin */ | |
1254 | WindowPtr B, /* NoneWin or PointerRootWin */ | |
1255 | int mode) | |
1256 | { | |
1257 | WindowPtr root; | |
1258 | int i; | |
1259 | int nscreens = screenInfo.numScreens; | |
1260 | ||
1261 | #ifdef PANORAMIX | |
1262 | if (!noPanoramiXExtension) | |
1263 | nscreens = 1; | |
1264 | #endif | |
1265 | ||
1266 | for (i = 0; i < nscreens; i++) { | |
1267 | root = screenInfo.screens[i]->root; | |
1268 | if (!HasOtherPointer(root, GetMaster(dev, POINTER_OR_FLOAT)) && | |
1269 | !FirstFocusChild(root)) { | |
1270 | /* If pointer was on PointerRootWin and changes to NoneWin, and | |
1271 | * the pointer paired with dev is below the current root window, | |
1272 | * do a NotifyPointer run. */ | |
1273 | if (dev->focus && dev->focus->win == PointerRootWin && | |
1274 | B != PointerRootWin) { | |
1275 | WindowPtr ptrwin = PointerWin(GetMaster(dev, POINTER_OR_FLOAT)); | |
1276 | ||
1277 | if (ptrwin && IsParent(root, ptrwin)) | |
1278 | CoreFocusOutNotifyPointerEvents(dev, root, None, mode, | |
1279 | TRUE); | |
1280 | } | |
1281 | CoreFocusEvent(dev, FocusOut, mode, | |
1282 | A ? NotifyPointerRoot : NotifyDetailNone, root); | |
1283 | CoreFocusEvent(dev, FocusIn, mode, | |
1284 | B ? NotifyPointerRoot : NotifyDetailNone, root); | |
1285 | if (B == PointerRootWin) | |
1286 | CoreFocusInNotifyPointerEvents(dev, root, None, mode, TRUE); | |
1287 | } | |
1288 | ||
1289 | } | |
1290 | } | |
1291 | ||
1292 | /** | |
1293 | * Focus moves from window A to PointerRoot or to None. | |
1294 | * Assumption: A is a valid window and not PointerRoot or None. | |
1295 | */ | |
1296 | static void | |
1297 | CoreFocusToPointerRootOrNone(DeviceIntPtr dev, WindowPtr A, | |
1298 | WindowPtr B, /* PointerRootWin or NoneWin */ | |
1299 | int mode) | |
1300 | { | |
1301 | WindowPtr root; | |
1302 | int i; | |
1303 | int nscreens = screenInfo.numScreens; | |
1304 | ||
1305 | #ifdef PANORAMIX | |
1306 | if (!noPanoramiXExtension) | |
1307 | nscreens = 1; | |
1308 | #endif | |
1309 | ||
1310 | if (!HasFocus(A)) { | |
1311 | WindowPtr child = FirstFocusChild(A); | |
1312 | ||
1313 | if (child) { | |
1314 | /* NotifyPointer P-A unless P is B or below */ | |
1315 | CoreFocusOutNotifyPointerEvents(dev, A, B, mode, FALSE); | |
1316 | CoreFocusEvent(dev, FocusOut, mode, NotifyInferior, A); | |
1317 | } | |
1318 | else { | |
1319 | /* NotifyPointer P-A */ | |
1320 | CoreFocusOutNotifyPointerEvents(dev, A, None, mode, FALSE); | |
1321 | CoreFocusEvent(dev, FocusOut, mode, NotifyNonlinear, A); | |
1322 | } | |
1323 | } | |
1324 | ||
1325 | /* NullWindow means we include the root window */ | |
1326 | CoreFocusOutEvents(dev, A, NullWindow, mode, NotifyNonlinearVirtual); | |
1327 | ||
1328 | for (i = 0; i < nscreens; i++) { | |
1329 | root = screenInfo.screens[i]->root; | |
1330 | if (!HasFocus(root) && !FirstFocusChild(root)) { | |
1331 | CoreFocusEvent(dev, FocusIn, mode, | |
1332 | B ? NotifyPointerRoot : NotifyDetailNone, root); | |
1333 | if (B == PointerRootWin) | |
1334 | CoreFocusInNotifyPointerEvents(dev, root, None, mode, TRUE); | |
1335 | } | |
1336 | } | |
1337 | } | |
1338 | ||
1339 | /** | |
1340 | * Focus moves from PointerRoot or None to a window B. | |
1341 | * Assumption: B is a valid window and not PointerRoot or None. | |
1342 | */ | |
1343 | static void | |
1344 | CoreFocusFromPointerRootOrNone(DeviceIntPtr dev, | |
1345 | WindowPtr A, /* PointerRootWin or NoneWin */ | |
1346 | WindowPtr B, int mode) | |
1347 | { | |
1348 | WindowPtr root; | |
1349 | int i; | |
1350 | int nscreens = screenInfo.numScreens; | |
1351 | ||
1352 | #ifdef PANORAMIX | |
1353 | if (!noPanoramiXExtension) | |
1354 | nscreens = 1; | |
1355 | #endif | |
1356 | ||
1357 | for (i = 0; i < nscreens; i++) { | |
1358 | root = screenInfo.screens[i]->root; | |
1359 | if (!HasFocus(root) && !FirstFocusChild(root)) { | |
1360 | /* If pointer was on PointerRootWin and changes to NoneWin, and | |
1361 | * the pointer paired with dev is below the current root window, | |
1362 | * do a NotifyPointer run. */ | |
1363 | if (dev->focus && dev->focus->win == PointerRootWin && | |
1364 | B != PointerRootWin) { | |
1365 | WindowPtr ptrwin = PointerWin(GetMaster(dev, POINTER_OR_FLOAT)); | |
1366 | ||
1367 | if (ptrwin) | |
1368 | CoreFocusOutNotifyPointerEvents(dev, root, None, mode, | |
1369 | TRUE); | |
1370 | } | |
1371 | CoreFocusEvent(dev, FocusOut, mode, | |
1372 | A ? NotifyPointerRoot : NotifyDetailNone, root); | |
1373 | } | |
1374 | } | |
1375 | ||
1376 | root = B; /* get B's root window */ | |
1377 | while (root->parent) | |
1378 | root = root->parent; | |
1379 | ||
1380 | if (B != root) { | |
1381 | CoreFocusEvent(dev, FocusIn, mode, NotifyNonlinearVirtual, root); | |
1382 | CoreFocusInEvents(dev, root, B, mode, NotifyNonlinearVirtual); | |
1383 | } | |
1384 | ||
1385 | if (!HasFocus(B)) { | |
1386 | WindowPtr child = FirstFocusChild(B); | |
1387 | ||
1388 | if (child) { | |
1389 | CoreFocusEvent(dev, FocusIn, mode, NotifyInferior, B); | |
1390 | /* NotifyPointer B-P unless P is child or below. */ | |
1391 | CoreFocusInNotifyPointerEvents(dev, B, child, mode, FALSE); | |
1392 | } | |
1393 | else { | |
1394 | CoreFocusEvent(dev, FocusIn, mode, NotifyNonlinear, B); | |
1395 | /* NotifyPointer B-P unless P is child or below. */ | |
1396 | CoreFocusInNotifyPointerEvents(dev, B, None, mode, FALSE); | |
1397 | } | |
1398 | } | |
1399 | ||
1400 | } | |
1401 | ||
1402 | static void | |
1403 | CoreFocusEvents(DeviceIntPtr dev, WindowPtr from, WindowPtr to, int mode) | |
1404 | { | |
1405 | if (!IsMaster(dev)) | |
1406 | return; | |
1407 | ||
1408 | SetFocusOut(dev); | |
1409 | ||
1410 | if (((to == NullWindow) || (to == PointerRootWin)) && | |
1411 | ((from == NullWindow) || (from == PointerRootWin))) | |
1412 | CoreFocusPointerRootNoneSwitch(dev, from, to, mode); | |
1413 | else if ((to == NullWindow) || (to == PointerRootWin)) | |
1414 | CoreFocusToPointerRootOrNone(dev, from, to, mode); | |
1415 | else if ((from == NullWindow) || (from == PointerRootWin)) | |
1416 | CoreFocusFromPointerRootOrNone(dev, from, to, mode); | |
1417 | else if (IsParent(from, to)) | |
1418 | CoreFocusToDescendant(dev, from, to, mode); | |
1419 | else if (IsParent(to, from)) | |
1420 | CoreFocusToAncestor(dev, from, to, mode); | |
1421 | else | |
1422 | CoreFocusNonLinear(dev, from, to, mode); | |
1423 | ||
1424 | SetFocusIn(dev, to); | |
1425 | } | |
1426 | ||
1427 | static void | |
1428 | DeviceFocusEvents(DeviceIntPtr dev, WindowPtr from, WindowPtr to, int mode) | |
1429 | { | |
1430 | int out, in; /* for holding details for to/from | |
1431 | PointerRoot/None */ | |
1432 | int i; | |
1433 | int nscreens = screenInfo.numScreens; | |
1434 | SpritePtr sprite = dev->spriteInfo->sprite; | |
1435 | ||
1436 | if (from == to) | |
1437 | return; | |
1438 | out = (from == NoneWin) ? NotifyDetailNone : NotifyPointerRoot; | |
1439 | in = (to == NoneWin) ? NotifyDetailNone : NotifyPointerRoot; | |
1440 | /* wrong values if neither, but then not referenced */ | |
1441 | ||
1442 | #ifdef PANORAMIX | |
1443 | if (!noPanoramiXExtension) | |
1444 | nscreens = 1; | |
1445 | #endif | |
1446 | ||
1447 | if ((to == NullWindow) || (to == PointerRootWin)) { | |
1448 | if ((from == NullWindow) || (from == PointerRootWin)) { | |
1449 | if (from == PointerRootWin) | |
1450 | DeviceFocusOutEvents(dev, sprite->win, | |
1451 | GetCurrentRootWindow(dev), mode, | |
1452 | NotifyPointer); | |
1453 | /* Notify all the roots */ | |
1454 | for (i = 0; i < nscreens; i++) | |
1455 | DeviceFocusEvent(dev, XI_FocusOut, mode, out, | |
1456 | screenInfo.screens[i]->root); | |
1457 | } | |
1458 | else { | |
1459 | if (IsParent(from, sprite->win)) | |
1460 | DeviceFocusOutEvents(dev, sprite->win, from, mode, | |
1461 | NotifyPointer); | |
1462 | DeviceFocusEvent(dev, XI_FocusOut, mode, NotifyNonlinear, from); | |
1463 | /* next call catches the root too, if the screen changed */ | |
1464 | DeviceFocusOutEvents(dev, from, NullWindow, mode, | |
1465 | NotifyNonlinearVirtual); | |
1466 | } | |
1467 | /* Notify all the roots */ | |
1468 | for (i = 0; i < nscreens; i++) | |
1469 | DeviceFocusEvent(dev, XI_FocusIn, mode, in, | |
1470 | screenInfo.screens[i]->root); | |
1471 | if (to == PointerRootWin) { | |
1472 | DeviceFocusInEvents(dev, GetCurrentRootWindow(dev), sprite->win, | |
1473 | mode, NotifyPointer); | |
1474 | DeviceFocusEvent(dev, XI_FocusIn, mode, NotifyPointer, sprite->win); | |
1475 | } | |
1476 | } | |
1477 | else { | |
1478 | if ((from == NullWindow) || (from == PointerRootWin)) { | |
1479 | if (from == PointerRootWin) | |
1480 | DeviceFocusOutEvents(dev, sprite->win, | |
1481 | GetCurrentRootWindow(dev), mode, | |
1482 | NotifyPointer); | |
1483 | for (i = 0; i < nscreens; i++) | |
1484 | DeviceFocusEvent(dev, XI_FocusOut, mode, out, | |
1485 | screenInfo.screens[i]->root); | |
1486 | if (to->parent != NullWindow) | |
1487 | DeviceFocusInEvents(dev, GetCurrentRootWindow(dev), to, mode, | |
1488 | NotifyNonlinearVirtual); | |
1489 | DeviceFocusEvent(dev, XI_FocusIn, mode, NotifyNonlinear, to); | |
1490 | if (IsParent(to, sprite->win)) | |
1491 | DeviceFocusInEvents(dev, to, sprite->win, mode, NotifyPointer); | |
1492 | } | |
1493 | else { | |
1494 | if (IsParent(to, from)) { | |
1495 | DeviceFocusEvent(dev, XI_FocusOut, mode, NotifyAncestor, from); | |
1496 | DeviceFocusOutEvents(dev, from, to, mode, NotifyVirtual); | |
1497 | DeviceFocusEvent(dev, XI_FocusIn, mode, NotifyInferior, to); | |
1498 | if ((IsParent(to, sprite->win)) && | |
1499 | (sprite->win != from) && | |
1500 | (!IsParent(from, sprite->win)) && | |
1501 | (!IsParent(sprite->win, from))) | |
1502 | DeviceFocusInEvents(dev, to, sprite->win, mode, | |
1503 | NotifyPointer); | |
1504 | } | |
1505 | else if (IsParent(from, to)) { | |
1506 | if ((IsParent(from, sprite->win)) && | |
1507 | (sprite->win != from) && | |
1508 | (!IsParent(to, sprite->win)) && | |
1509 | (!IsParent(sprite->win, to))) | |
1510 | DeviceFocusOutEvents(dev, sprite->win, from, mode, | |
1511 | NotifyPointer); | |
1512 | DeviceFocusEvent(dev, XI_FocusOut, mode, NotifyInferior, from); | |
1513 | DeviceFocusInEvents(dev, from, to, mode, NotifyVirtual); | |
1514 | DeviceFocusEvent(dev, XI_FocusIn, mode, NotifyAncestor, to); | |
1515 | } | |
1516 | else { | |
1517 | /* neither from or to is child of other */ | |
1518 | WindowPtr common = CommonAncestor(to, from); | |
1519 | ||
1520 | /* common == NullWindow ==> different screens */ | |
1521 | if (IsParent(from, sprite->win)) | |
1522 | DeviceFocusOutEvents(dev, sprite->win, from, mode, | |
1523 | NotifyPointer); | |
1524 | DeviceFocusEvent(dev, XI_FocusOut, mode, NotifyNonlinear, from); | |
1525 | if (from->parent != NullWindow) | |
1526 | DeviceFocusOutEvents(dev, from, common, mode, | |
1527 | NotifyNonlinearVirtual); | |
1528 | if (to->parent != NullWindow) | |
1529 | DeviceFocusInEvents(dev, common, to, mode, | |
1530 | NotifyNonlinearVirtual); | |
1531 | DeviceFocusEvent(dev, XI_FocusIn, mode, NotifyNonlinear, to); | |
1532 | if (IsParent(to, sprite->win)) | |
1533 | DeviceFocusInEvents(dev, to, sprite->win, mode, | |
1534 | NotifyPointer); | |
1535 | } | |
1536 | } | |
1537 | } | |
1538 | } | |
1539 | ||
1540 | /** | |
1541 | * Figure out if focus events are necessary and send them to the | |
1542 | * appropriate windows. | |
1543 | * | |
1544 | * @param from Window the focus moved out of. | |
1545 | * @param to Window the focus moved into. | |
1546 | */ | |
1547 | void | |
1548 | DoFocusEvents(DeviceIntPtr pDev, WindowPtr from, WindowPtr to, int mode) | |
1549 | { | |
1550 | if (!IsKeyboardDevice(pDev)) | |
1551 | return; | |
1552 | ||
1553 | if (from == to) | |
1554 | return; | |
1555 | ||
1556 | CoreFocusEvents(pDev, from, to, mode); | |
1557 | DeviceFocusEvents(pDev, from, to, mode); | |
1558 | } |