File: | dix/touch.c |
Location: | line 847, column 9 |
Description: | Access to field 'inputClients' results in a dereference of a null pointer (loaded from variable 'inputMasks') |
1 | /* | |||||
2 | * Copyright © 2011 Collabra Ltd. | |||||
3 | * Copyright © 2011 Red Hat, Inc. | |||||
4 | * | |||||
5 | * Permission is hereby granted, free of charge, to any person obtaining a | |||||
6 | * copy of this software and associated documentation files (the "Software"), | |||||
7 | * to deal in the Software without restriction, including without limitation | |||||
8 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |||||
9 | * and/or sell copies of the Software, and to permit persons to whom the | |||||
10 | * Software is furnished to do so, subject to the following conditions: | |||||
11 | * | |||||
12 | * The above copyright notice and this permission notice (including the next | |||||
13 | * paragraph) shall be included in all copies or substantial portions of the | |||||
14 | * Software. | |||||
15 | * | |||||
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |||||
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |||||
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |||||
19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |||||
20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | |||||
21 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER | |||||
22 | * DEALINGS IN THE SOFTWARE. | |||||
23 | * | |||||
24 | * Author: Daniel Stone <daniel@fooishbar.org> | |||||
25 | */ | |||||
26 | ||||||
27 | #ifdef HAVE_DIX_CONFIG_H1 | |||||
28 | #include <dix-config.h> | |||||
29 | #endif | |||||
30 | ||||||
31 | #include "inputstr.h" | |||||
32 | #include "scrnintstr.h" | |||||
33 | #include "dixgrabs.h" | |||||
34 | ||||||
35 | #include "eventstr.h" | |||||
36 | #include "exevents.h" | |||||
37 | #include "exglobals.h" | |||||
38 | #include "inpututils.h" | |||||
39 | #include "eventconvert.h" | |||||
40 | #include "windowstr.h" | |||||
41 | #include "mi.h" | |||||
42 | ||||||
43 | #define TOUCH_HISTORY_SIZE100 100 | |||||
44 | ||||||
45 | /* If a touch queue resize is needed, the device id's bit is set. */ | |||||
46 | static unsigned char resize_waiting[(MAXDEVICES40 + 7) / 8]; | |||||
47 | ||||||
48 | /** | |||||
49 | * Some documentation about touch points: | |||||
50 | * The driver submits touch events with it's own (unique) touch point ID. | |||||
51 | * The driver may re-use those IDs, the DDX doesn't care. It just passes on | |||||
52 | * the data to the DIX. In the server, the driver's ID is referred to as the | |||||
53 | * DDX id anyway. | |||||
54 | * | |||||
55 | * On a TouchBegin, we create a DDXTouchPointInfo that contains the DDX id | |||||
56 | * and the client ID that this touchpoint will have. The client ID is the | |||||
57 | * one visible on the protocol. | |||||
58 | * | |||||
59 | * TouchUpdate and TouchEnd will only be processed if there is an active | |||||
60 | * touchpoint with the same DDX id. | |||||
61 | * | |||||
62 | * The DDXTouchPointInfo struct is stored dev->last.touches. When the event | |||||
63 | * being processed, it becomes a TouchPointInfo in dev->touch-touches which | |||||
64 | * contains amongst other things the sprite trace and delivery information. | |||||
65 | */ | |||||
66 | ||||||
67 | /** | |||||
68 | * Check which devices need a bigger touch event queue and grow their | |||||
69 | * last.touches by half it's current size. | |||||
70 | * | |||||
71 | * @param client Always the serverClient | |||||
72 | * @param closure Always NULL | |||||
73 | * | |||||
74 | * @return Always True. If we fail to grow we probably will topple over soon | |||||
75 | * anyway and re-executing this won't help. | |||||
76 | */ | |||||
77 | static Bool | |||||
78 | TouchResizeQueue(ClientPtr client, void *closure) | |||||
79 | { | |||||
80 | int i; | |||||
81 | ||||||
82 | OsBlockSignals(); | |||||
83 | ||||||
84 | /* first two ids are reserved */ | |||||
85 | for (i = 2; i < MAXDEVICES40; i++) { | |||||
86 | DeviceIntPtr dev; | |||||
87 | DDXTouchPointInfoPtr tmp; | |||||
88 | size_t size; | |||||
89 | ||||||
90 | if (!BitIsOn(resize_waiting, i)(!!(((const BYTE *) (resize_waiting))[(i)>>3] & (1 << ((i) & 7))))) | |||||
91 | continue; | |||||
92 | ||||||
93 | ClearBit(resize_waiting, i)(((BYTE *)(resize_waiting))[(i)>>3] &= ~(1 << ((i) & 7))); | |||||
94 | ||||||
95 | /* device may have disappeared by now */ | |||||
96 | dixLookupDevice(&dev, i, serverClient, DixWriteAccess(1<<1)); | |||||
97 | if (!dev) | |||||
98 | continue; | |||||
99 | ||||||
100 | /* Need to grow the queue means dropping events. Grow sufficiently so we | |||||
101 | * don't need to do it often */ | |||||
102 | size = dev->last.num_touches + dev->last.num_touches / 2 + 1; | |||||
103 | ||||||
104 | tmp = realloc(dev->last.touches, size * sizeof(*dev->last.touches)); | |||||
105 | if (tmp) { | |||||
106 | int j; | |||||
107 | ||||||
108 | dev->last.touches = tmp; | |||||
109 | for (j = dev->last.num_touches; j < size; j++) | |||||
110 | TouchInitDDXTouchPoint(dev, &dev->last.touches[j]); | |||||
111 | dev->last.num_touches = size; | |||||
112 | } | |||||
113 | ||||||
114 | } | |||||
115 | OsReleaseSignals(); | |||||
116 | ||||||
117 | return TRUE1; | |||||
118 | } | |||||
119 | ||||||
120 | /** | |||||
121 | * Given the DDX-facing ID (which is _not_ DeviceEvent::detail.touch), find the | |||||
122 | * associated DDXTouchPointInfoRec. | |||||
123 | * | |||||
124 | * @param dev The device to create the touch point for | |||||
125 | * @param ddx_id Touch id assigned by the driver/ddx | |||||
126 | * @param create Create the touchpoint if it cannot be found | |||||
127 | */ | |||||
128 | DDXTouchPointInfoPtr | |||||
129 | TouchFindByDDXID(DeviceIntPtr dev, uint32_t ddx_id, Bool create) | |||||
130 | { | |||||
131 | DDXTouchPointInfoPtr ti; | |||||
132 | int i; | |||||
133 | ||||||
134 | if (!dev->touch) | |||||
135 | return NULL((void*)0); | |||||
136 | ||||||
137 | for (i = 0; i < dev->last.num_touches; i++) { | |||||
138 | ti = &dev->last.touches[i]; | |||||
139 | if (ti->active && ti->ddx_id == ddx_id) | |||||
140 | return ti; | |||||
141 | } | |||||
142 | ||||||
143 | return create ? TouchBeginDDXTouch(dev, ddx_id) : NULL((void*)0); | |||||
144 | } | |||||
145 | ||||||
146 | /** | |||||
147 | * Given a unique DDX ID for a touchpoint, create a touchpoint record and | |||||
148 | * return it. | |||||
149 | * | |||||
150 | * If no other touch points are active, mark new touchpoint for pointer | |||||
151 | * emulation. | |||||
152 | * | |||||
153 | * Returns NULL on failure (i.e. if another touch with that ID is already active, | |||||
154 | * allocation failure). | |||||
155 | */ | |||||
156 | DDXTouchPointInfoPtr | |||||
157 | TouchBeginDDXTouch(DeviceIntPtr dev, uint32_t ddx_id) | |||||
158 | { | |||||
159 | static int next_client_id = 1; | |||||
160 | int i; | |||||
161 | TouchClassPtr t = dev->touch; | |||||
162 | DDXTouchPointInfoPtr ti = NULL((void*)0); | |||||
163 | Bool emulate_pointer; | |||||
164 | ||||||
165 | if (!t) | |||||
166 | return NULL((void*)0); | |||||
167 | ||||||
168 | emulate_pointer = (t->mode == XIDirectTouch1); | |||||
169 | ||||||
170 | /* Look for another active touchpoint with the same DDX ID. DDX | |||||
171 | * touchpoints must be unique. */ | |||||
172 | if (TouchFindByDDXID(dev, ddx_id, FALSE0)) | |||||
173 | return NULL((void*)0); | |||||
174 | ||||||
175 | for (i = 0; i < dev->last.num_touches; i++) { | |||||
176 | /* Only emulate pointer events on the first touch */ | |||||
177 | if (dev->last.touches[i].active) | |||||
178 | emulate_pointer = FALSE0; | |||||
179 | else if (!ti) /* ti is now first non-active touch rec */ | |||||
180 | ti = &dev->last.touches[i]; | |||||
181 | ||||||
182 | if (!emulate_pointer && ti) | |||||
183 | break; | |||||
184 | } | |||||
185 | ||||||
186 | if (ti) { | |||||
187 | int client_id; | |||||
188 | ||||||
189 | ti->active = TRUE1; | |||||
190 | ti->ddx_id = ddx_id; | |||||
191 | client_id = next_client_id; | |||||
192 | next_client_id++; | |||||
193 | if (next_client_id == 0) | |||||
194 | next_client_id = 1; | |||||
195 | ti->client_id = client_id; | |||||
196 | ti->emulate_pointer = emulate_pointer; | |||||
197 | return ti; | |||||
198 | } | |||||
199 | ||||||
200 | /* If we get here, then we've run out of touches and we need to drop the | |||||
201 | * event (we're inside the SIGIO handler here) schedule a WorkProc to | |||||
202 | * grow the queue for us for next time. */ | |||||
203 | ErrorFSigSafe("%s: not enough space for touch events (max %u touchpoints). " | |||||
204 | "Dropping this event.\n", dev->name, dev->last.num_touches); | |||||
205 | ||||||
206 | if (!BitIsOn(resize_waiting, dev->id)(!!(((const BYTE *) (resize_waiting))[(dev->id)>>3] & (1 << ((dev->id) & 7))))) { | |||||
207 | SetBit(resize_waiting, dev->id)(((BYTE *) (resize_waiting))[(dev->id)>>3] |= (1 << ((dev->id) & 7))); | |||||
208 | QueueWorkProc(TouchResizeQueue, serverClient, NULL((void*)0)); | |||||
209 | } | |||||
210 | ||||||
211 | return NULL((void*)0); | |||||
212 | } | |||||
213 | ||||||
214 | void | |||||
215 | TouchEndDDXTouch(DeviceIntPtr dev, DDXTouchPointInfoPtr ti) | |||||
216 | { | |||||
217 | TouchClassPtr t = dev->touch; | |||||
218 | ||||||
219 | if (!t) | |||||
220 | return; | |||||
221 | ||||||
222 | ti->active = FALSE0; | |||||
223 | } | |||||
224 | ||||||
225 | void | |||||
226 | TouchInitDDXTouchPoint(DeviceIntPtr dev, DDXTouchPointInfoPtr ddxtouch) | |||||
227 | { | |||||
228 | memset(ddxtouch, 0, sizeof(*ddxtouch))__builtin___memset_chk (ddxtouch, 0, sizeof(*ddxtouch), __builtin_object_size (ddxtouch, 0)); | |||||
229 | ddxtouch->valuators = valuator_mask_new(dev->valuator->numAxes); | |||||
230 | } | |||||
231 | ||||||
232 | Bool | |||||
233 | TouchInitTouchPoint(TouchClassPtr t, ValuatorClassPtr v, int index) | |||||
234 | { | |||||
235 | TouchPointInfoPtr ti; | |||||
236 | ||||||
237 | if (index >= t->num_touches) | |||||
238 | return FALSE0; | |||||
239 | ti = &t->touches[index]; | |||||
240 | ||||||
241 | memset(ti, 0, sizeof(*ti))__builtin___memset_chk (ti, 0, sizeof(*ti), __builtin_object_size (ti, 0)); | |||||
242 | ||||||
243 | ti->valuators = valuator_mask_new(v->numAxes); | |||||
244 | if (!ti->valuators) | |||||
245 | return FALSE0; | |||||
246 | ||||||
247 | ti->sprite.spriteTrace = calloc(32, sizeof(*ti->sprite.spriteTrace)); | |||||
248 | if (!ti->sprite.spriteTrace) { | |||||
249 | valuator_mask_free(&ti->valuators); | |||||
250 | return FALSE0; | |||||
251 | } | |||||
252 | ti->sprite.spriteTraceSize = 32; | |||||
253 | ti->sprite.spriteTrace[0] = screenInfo.screens[0]->root; | |||||
254 | ti->sprite.hot.pScreen = screenInfo.screens[0]; | |||||
255 | ti->sprite.hotPhys.pScreen = screenInfo.screens[0]; | |||||
256 | ||||||
257 | ti->client_id = -1; | |||||
258 | ||||||
259 | return TRUE1; | |||||
260 | } | |||||
261 | ||||||
262 | void | |||||
263 | TouchFreeTouchPoint(DeviceIntPtr device, int index) | |||||
264 | { | |||||
265 | TouchPointInfoPtr ti; | |||||
266 | int i; | |||||
267 | ||||||
268 | if (!device->touch || index >= device->touch->num_touches) | |||||
269 | return; | |||||
270 | ti = &device->touch->touches[index]; | |||||
271 | ||||||
272 | if (ti->active) | |||||
273 | TouchEndTouch(device, ti); | |||||
274 | ||||||
275 | for (i = 0; i < ti->num_listeners; i++) | |||||
276 | TouchRemoveListener(ti, ti->listeners[0].listener); | |||||
277 | ||||||
278 | valuator_mask_free(&ti->valuators); | |||||
279 | free(ti->sprite.spriteTrace); | |||||
280 | ti->sprite.spriteTrace = NULL((void*)0); | |||||
281 | free(ti->listeners); | |||||
282 | ti->listeners = NULL((void*)0); | |||||
283 | free(ti->history); | |||||
284 | ti->history = NULL((void*)0); | |||||
285 | ti->history_size = 0; | |||||
286 | ti->history_elements = 0; | |||||
287 | } | |||||
288 | ||||||
289 | /** | |||||
290 | * Given a client-facing ID (e.g. DeviceEvent::detail.touch), find the | |||||
291 | * associated TouchPointInfoRec. | |||||
292 | */ | |||||
293 | TouchPointInfoPtr | |||||
294 | TouchFindByClientID(DeviceIntPtr dev, uint32_t client_id) | |||||
295 | { | |||||
296 | TouchClassPtr t = dev->touch; | |||||
297 | TouchPointInfoPtr ti; | |||||
298 | int i; | |||||
299 | ||||||
300 | if (!t) | |||||
301 | return NULL((void*)0); | |||||
302 | ||||||
303 | for (i = 0; i < t->num_touches; i++) { | |||||
304 | ti = &t->touches[i]; | |||||
305 | if (ti->active && ti->client_id == client_id) | |||||
306 | return ti; | |||||
307 | } | |||||
308 | ||||||
309 | return NULL((void*)0); | |||||
310 | } | |||||
311 | ||||||
312 | /** | |||||
313 | * Given a unique ID for a touchpoint, create a touchpoint record in the | |||||
314 | * server. | |||||
315 | * | |||||
316 | * Returns NULL on failure (i.e. if another touch with that ID is already active, | |||||
317 | * allocation failure). | |||||
318 | */ | |||||
319 | TouchPointInfoPtr | |||||
320 | TouchBeginTouch(DeviceIntPtr dev, int sourceid, uint32_t touchid, | |||||
321 | Bool emulate_pointer) | |||||
322 | { | |||||
323 | int i; | |||||
324 | TouchClassPtr t = dev->touch; | |||||
325 | TouchPointInfoPtr ti; | |||||
326 | void *tmp; | |||||
327 | ||||||
328 | if (!t) | |||||
329 | return NULL((void*)0); | |||||
330 | ||||||
331 | /* Look for another active touchpoint with the same client ID. It's | |||||
332 | * technically legitimate for a touchpoint to still exist with the same | |||||
333 | * ID but only once the 32 bits wrap over and you've used up 4 billion | |||||
334 | * touch ids without lifting that one finger off once. In which case | |||||
335 | * you deserve a medal or something, but not error handling code. */ | |||||
336 | if (TouchFindByClientID(dev, touchid)) | |||||
337 | return NULL((void*)0); | |||||
338 | ||||||
339 | try_find_touch: | |||||
340 | for (i = 0; i < t->num_touches; i++) { | |||||
341 | ti = &t->touches[i]; | |||||
342 | if (!ti->active) { | |||||
343 | ti->active = TRUE1; | |||||
344 | ti->client_id = touchid; | |||||
345 | ti->sourceid = sourceid; | |||||
346 | ti->emulate_pointer = emulate_pointer; | |||||
347 | return ti; | |||||
348 | } | |||||
349 | } | |||||
350 | ||||||
351 | /* If we get here, then we've run out of touches: enlarge dev->touch and | |||||
352 | * try again. */ | |||||
353 | tmp = realloc(t->touches, (t->num_touches + 1) * sizeof(*ti)); | |||||
354 | if (tmp) { | |||||
355 | t->touches = tmp; | |||||
356 | t->num_touches++; | |||||
357 | if (TouchInitTouchPoint(t, dev->valuator, t->num_touches - 1)) | |||||
358 | goto try_find_touch; | |||||
359 | } | |||||
360 | ||||||
361 | return NULL((void*)0); | |||||
362 | } | |||||
363 | ||||||
364 | /** | |||||
365 | * Releases a touchpoint for use: this must only be called after all events | |||||
366 | * related to that touchpoint have been sent and finalised. Called from | |||||
367 | * ProcessTouchEvent and friends. Not by you. | |||||
368 | */ | |||||
369 | void | |||||
370 | TouchEndTouch(DeviceIntPtr dev, TouchPointInfoPtr ti) | |||||
371 | { | |||||
372 | int i; | |||||
373 | ||||||
374 | if (ti->emulate_pointer) { | |||||
375 | GrabPtr grab; | |||||
376 | ||||||
377 | if ((grab = dev->deviceGrab.grab)) { | |||||
378 | if (dev->deviceGrab.fromPassiveGrab && | |||||
379 | !dev->button->buttonsDown && | |||||
380 | !dev->touch->buttonsDown && GrabIsPointerGrab(grab)) | |||||
381 | (*dev->deviceGrab.DeactivateGrab) (dev); | |||||
382 | } | |||||
383 | } | |||||
384 | ||||||
385 | for (i = 0; i < ti->num_listeners; i++) | |||||
386 | TouchRemoveListener(ti, ti->listeners[0].listener); | |||||
387 | ||||||
388 | ti->active = FALSE0; | |||||
389 | ti->pending_finish = FALSE0; | |||||
390 | ti->sprite.spriteTraceGood = 0; | |||||
391 | free(ti->listeners); | |||||
392 | ti->listeners = NULL((void*)0); | |||||
393 | ti->num_listeners = 0; | |||||
394 | ti->num_grabs = 0; | |||||
395 | ti->client_id = 0; | |||||
396 | ||||||
397 | TouchEventHistoryFree(ti); | |||||
398 | ||||||
399 | valuator_mask_zero(ti->valuators); | |||||
400 | } | |||||
401 | ||||||
402 | /** | |||||
403 | * Allocate the event history for this touch pointer. Calling this on a | |||||
404 | * touchpoint that already has an event history does nothing but counts as | |||||
405 | * as success. | |||||
406 | * | |||||
407 | * @return TRUE on success, FALSE on allocation errors | |||||
408 | */ | |||||
409 | Bool | |||||
410 | TouchEventHistoryAllocate(TouchPointInfoPtr ti) | |||||
411 | { | |||||
412 | if (ti->history) | |||||
413 | return TRUE1; | |||||
414 | ||||||
415 | ti->history = calloc(TOUCH_HISTORY_SIZE100, sizeof(*ti->history)); | |||||
416 | ti->history_elements = 0; | |||||
417 | if (ti->history) | |||||
418 | ti->history_size = TOUCH_HISTORY_SIZE100; | |||||
419 | return ti->history != NULL((void*)0); | |||||
420 | } | |||||
421 | ||||||
422 | void | |||||
423 | TouchEventHistoryFree(TouchPointInfoPtr ti) | |||||
424 | { | |||||
425 | free(ti->history); | |||||
426 | ti->history = NULL((void*)0); | |||||
427 | ti->history_size = 0; | |||||
428 | ti->history_elements = 0; | |||||
429 | } | |||||
430 | ||||||
431 | /** | |||||
432 | * Store the given event on the event history (if one exists) | |||||
433 | * A touch event history consists of one TouchBegin and several TouchUpdate | |||||
434 | * events (if applicable) but no TouchEnd event. | |||||
435 | * If more than one TouchBegin is pushed onto the stack, the push is | |||||
436 | * ignored, calling this function multiple times for the TouchBegin is | |||||
437 | * valid. | |||||
438 | */ | |||||
439 | void | |||||
440 | TouchEventHistoryPush(TouchPointInfoPtr ti, const DeviceEvent *ev) | |||||
441 | { | |||||
442 | if (!ti->history) | |||||
443 | return; | |||||
444 | ||||||
445 | switch (ev->type) { | |||||
446 | case ET_TouchBegin: | |||||
447 | /* don't store the same touchbegin twice */ | |||||
448 | if (ti->history_elements > 0) | |||||
449 | return; | |||||
450 | break; | |||||
451 | case ET_TouchUpdate: | |||||
452 | break; | |||||
453 | case ET_TouchEnd: | |||||
454 | return; /* no TouchEnd events in the history */ | |||||
455 | default: | |||||
456 | return; | |||||
457 | } | |||||
458 | ||||||
459 | /* We only store real events in the history */ | |||||
460 | if (ev->flags & (TOUCH_CLIENT_ID(1 << 3) | TOUCH_REPLAYING(1 << 4))) | |||||
461 | return; | |||||
462 | ||||||
463 | ti->history[ti->history_elements++] = *ev; | |||||
464 | /* FIXME: proper overflow fixes */ | |||||
465 | if (ti->history_elements > ti->history_size - 1) { | |||||
466 | ti->history_elements = ti->history_size - 1; | |||||
467 | DebugF("source device %d: history size %d overflowing for touch %u\n", | |||||
468 | ti->sourceid, ti->history_size, ti->client_id); | |||||
469 | } | |||||
470 | } | |||||
471 | ||||||
472 | void | |||||
473 | TouchEventHistoryReplay(TouchPointInfoPtr ti, DeviceIntPtr dev, XID resource) | |||||
474 | { | |||||
475 | int i; | |||||
476 | ||||||
477 | if (!ti->history) | |||||
478 | return; | |||||
479 | ||||||
480 | TouchDeliverDeviceClassesChangedEvent(ti, ti->history[0].time, resource); | |||||
481 | ||||||
482 | for (i = 0; i < ti->history_elements; i++) { | |||||
483 | DeviceEvent *ev = &ti->history[i]; | |||||
484 | ||||||
485 | ev->flags |= TOUCH_REPLAYING(1 << 4); | |||||
486 | ev->resource = resource; | |||||
487 | /* FIXME: | |||||
488 | We're replaying ti->history which contains the TouchBegin + | |||||
489 | all TouchUpdates for ti. This needs to be passed on to the next | |||||
490 | listener. If that is a touch listener, everything is dandy. | |||||
491 | If the TouchBegin however triggers a sync passive grab, the | |||||
492 | TouchUpdate events must be sent to EnqueueEvent so the events end | |||||
493 | up in syncEvents.pending to be forwarded correctly in a | |||||
494 | subsequent ComputeFreeze(). | |||||
495 | ||||||
496 | However, if we just send them to EnqueueEvent the sync'ing device | |||||
497 | prevents handling of touch events for ownership listeners who | |||||
498 | want the events right here, right now. | |||||
499 | */ | |||||
500 | dev->public.processInputProc((InternalEvent*)ev, dev); | |||||
501 | } | |||||
502 | } | |||||
503 | ||||||
504 | void | |||||
505 | TouchDeliverDeviceClassesChangedEvent(TouchPointInfoPtr ti, Time time, | |||||
506 | XID resource) | |||||
507 | { | |||||
508 | DeviceIntPtr dev; | |||||
509 | int num_events = 0; | |||||
510 | InternalEvent dcce; | |||||
511 | ||||||
512 | dixLookupDevice(&dev, ti->sourceid, serverClient, DixWriteAccess(1<<1)); | |||||
513 | ||||||
514 | if (!dev) | |||||
515 | return; | |||||
516 | ||||||
517 | /* UpdateFromMaster generates at most one event */ | |||||
518 | UpdateFromMaster(&dcce, dev, DEVCHANGE_POINTER_EVENT0x4, &num_events); | |||||
519 | BUG_WARN(num_events > 1)do { if (num_events > 1) { ErrorFSigSafe("BUG: triggered 'if (" "num_events > 1" ")'\n"); ErrorFSigSafe("BUG: %s:%u in %s()\n" , "touch.c", 519, __func__); if (0) ErrorFSigSafe(((void*)0)) ; xorg_backtrace(); } } while(0); | |||||
520 | ||||||
521 | if (num_events) { | |||||
522 | dcce.any.time = time; | |||||
523 | /* FIXME: This doesn't do anything */ | |||||
524 | dev->public.processInputProc(&dcce, dev); | |||||
525 | } | |||||
526 | } | |||||
527 | ||||||
528 | Bool | |||||
529 | TouchBuildDependentSpriteTrace(DeviceIntPtr dev, SpritePtr sprite) | |||||
530 | { | |||||
531 | int i; | |||||
532 | TouchClassPtr t = dev->touch; | |||||
533 | WindowPtr *trace; | |||||
534 | SpritePtr srcsprite; | |||||
535 | ||||||
536 | /* All touches should have the same sprite trace, so find and reuse an | |||||
537 | * existing touch's sprite if possible, else use the device's sprite. */ | |||||
538 | for (i = 0; i < t->num_touches; i++) | |||||
539 | if (!t->touches[i].pending_finish && | |||||
540 | t->touches[i].sprite.spriteTraceGood > 0) | |||||
541 | break; | |||||
542 | if (i < t->num_touches) | |||||
543 | srcsprite = &t->touches[i].sprite; | |||||
544 | else if (dev->spriteInfo->sprite) | |||||
545 | srcsprite = dev->spriteInfo->sprite; | |||||
546 | else | |||||
547 | return FALSE0; | |||||
548 | ||||||
549 | if (srcsprite->spriteTraceGood > sprite->spriteTraceSize) { | |||||
550 | trace = realloc(sprite->spriteTrace, | |||||
551 | srcsprite->spriteTraceSize * sizeof(*trace)); | |||||
552 | if (!trace) { | |||||
553 | sprite->spriteTraceGood = 0; | |||||
554 | return FALSE0; | |||||
555 | } | |||||
556 | sprite->spriteTrace = trace; | |||||
557 | sprite->spriteTraceSize = srcsprite->spriteTraceGood; | |||||
558 | } | |||||
559 | memcpy(sprite->spriteTrace, srcsprite->spriteTrace,__builtin___memcpy_chk (sprite->spriteTrace, srcsprite-> spriteTrace, srcsprite->spriteTraceGood * sizeof(*trace), __builtin_object_size (sprite->spriteTrace, 0)) | |||||
560 | srcsprite->spriteTraceGood * sizeof(*trace))__builtin___memcpy_chk (sprite->spriteTrace, srcsprite-> spriteTrace, srcsprite->spriteTraceGood * sizeof(*trace), __builtin_object_size (sprite->spriteTrace, 0)); | |||||
561 | sprite->spriteTraceGood = srcsprite->spriteTraceGood; | |||||
562 | ||||||
563 | return TRUE1; | |||||
564 | } | |||||
565 | ||||||
566 | /** | |||||
567 | * Ensure a window trace is present in ti->sprite, constructing one for | |||||
568 | * TouchBegin events. | |||||
569 | */ | |||||
570 | Bool | |||||
571 | TouchBuildSprite(DeviceIntPtr sourcedev, TouchPointInfoPtr ti, | |||||
572 | InternalEvent *ev) | |||||
573 | { | |||||
574 | TouchClassPtr t = sourcedev->touch; | |||||
575 | SpritePtr sprite = &ti->sprite; | |||||
576 | ||||||
577 | if (t->mode == XIDirectTouch1) { | |||||
578 | /* Focus immediately under the touchpoint in direct touch mode. | |||||
579 | * XXX: Do we need to handle crossing screens here? */ | |||||
580 | sprite->spriteTrace[0] = | |||||
581 | sourcedev->spriteInfo->sprite->hotPhys.pScreen->root; | |||||
582 | XYToWindow(sprite, ev->device_event.root_x, ev->device_event.root_y); | |||||
583 | } | |||||
584 | else if (!TouchBuildDependentSpriteTrace(sourcedev, sprite)) | |||||
585 | return FALSE0; | |||||
586 | ||||||
587 | if (sprite->spriteTraceGood <= 0) | |||||
588 | return FALSE0; | |||||
589 | ||||||
590 | /* Mark which grabs/event selections we're delivering to: max one grab per | |||||
591 | * window plus the bottom-most event selection, plus any active grab. */ | |||||
592 | ti->listeners = calloc(sprite->spriteTraceGood + 2, sizeof(*ti->listeners)); | |||||
593 | if (!ti->listeners) { | |||||
594 | sprite->spriteTraceGood = 0; | |||||
595 | return FALSE0; | |||||
596 | } | |||||
597 | ti->num_listeners = 0; | |||||
598 | ||||||
599 | return TRUE1; | |||||
600 | } | |||||
601 | ||||||
602 | /** | |||||
603 | * Copy the touch event into the pointer_event, switching the required | |||||
604 | * fields to make it a correct pointer event. | |||||
605 | * | |||||
606 | * @param event The original touch event | |||||
607 | * @param[in] motion_event The respective motion event | |||||
608 | * @param[in] button_event The respective button event (if any) | |||||
609 | * | |||||
610 | * @returns The number of converted events. | |||||
611 | * @retval 0 An error occured | |||||
612 | * @retval 1 only the motion event is valid | |||||
613 | * @retval 2 motion and button event are valid | |||||
614 | */ | |||||
615 | int | |||||
616 | TouchConvertToPointerEvent(const InternalEvent *event, | |||||
617 | InternalEvent *motion_event, | |||||
618 | InternalEvent *button_event) | |||||
619 | { | |||||
620 | int ptrtype; | |||||
621 | int nevents = 0; | |||||
622 | ||||||
623 | BUG_RETURN_VAL(!event, 0)do { if (!event) { do { if (!event) { ErrorFSigSafe("BUG: triggered 'if (" "!event" ")'\n"); ErrorFSigSafe("BUG: %s:%u in %s()\n", "touch.c" , 623, __func__); if (0) ErrorFSigSafe(((void*)0)); xorg_backtrace (); } } while(0); return (0); } } while(0); | |||||
624 | BUG_RETURN_VAL(!motion_event, 0)do { if (!motion_event) { do { if (!motion_event) { ErrorFSigSafe ("BUG: triggered 'if (" "!motion_event" ")'\n"); ErrorFSigSafe ("BUG: %s:%u in %s()\n", "touch.c", 624, __func__); if (0) ErrorFSigSafe (((void*)0)); xorg_backtrace(); } } while(0); return (0); } } while(0); | |||||
625 | ||||||
626 | switch (event->any.type) { | |||||
627 | case ET_TouchUpdate: | |||||
628 | nevents = 1; | |||||
629 | break; | |||||
630 | case ET_TouchBegin: | |||||
631 | nevents = 2; /* motion + press */ | |||||
632 | ptrtype = ET_ButtonPress; | |||||
633 | break; | |||||
634 | case ET_TouchEnd: | |||||
635 | nevents = 2; /* motion + release */ | |||||
636 | ptrtype = ET_ButtonRelease; | |||||
637 | break; | |||||
638 | default: | |||||
639 | BUG_WARN_MSG(1, "Invalid event type %d\n", event->any.type)do { if (1) { ErrorFSigSafe("BUG: triggered 'if (" "1" ")'\n" ); ErrorFSigSafe("BUG: %s:%u in %s()\n", "touch.c", 639, __func__ ); if (1) ErrorFSigSafe("Invalid event type %d\n", event-> any.type); xorg_backtrace(); } } while(0); | |||||
640 | return 0; | |||||
641 | } | |||||
642 | ||||||
643 | BUG_WARN_MSG(!(event->device_event.flags & TOUCH_POINTER_EMULATED),do { if (!(event->device_event.flags & (1 << 5)) ) { ErrorFSigSafe("BUG: triggered 'if (" "!(event->device_event.flags & (1 << 5))" ")'\n"); ErrorFSigSafe("BUG: %s:%u in %s()\n", "touch.c", 644 , __func__); if (1) ErrorFSigSafe("Non-emulating touch event\n" ); xorg_backtrace(); } } while(0) | |||||
644 | "Non-emulating touch event\n")do { if (!(event->device_event.flags & (1 << 5)) ) { ErrorFSigSafe("BUG: triggered 'if (" "!(event->device_event.flags & (1 << 5))" ")'\n"); ErrorFSigSafe("BUG: %s:%u in %s()\n", "touch.c", 644 , __func__); if (1) ErrorFSigSafe("Non-emulating touch event\n" ); xorg_backtrace(); } } while(0); | |||||
645 | ||||||
646 | motion_event->device_event = event->device_event; | |||||
647 | motion_event->any.type = ET_Motion; | |||||
648 | motion_event->device_event.detail.button = 0; | |||||
649 | motion_event->device_event.flags = XIPointerEmulated(1 << 16); | |||||
650 | ||||||
651 | if (nevents > 1) { | |||||
652 | BUG_RETURN_VAL(!button_event, 0)do { if (!button_event) { do { if (!button_event) { ErrorFSigSafe ("BUG: triggered 'if (" "!button_event" ")'\n"); ErrorFSigSafe ("BUG: %s:%u in %s()\n", "touch.c", 652, __func__); if (0) ErrorFSigSafe (((void*)0)); xorg_backtrace(); } } while(0); return (0); } } while(0); | |||||
653 | button_event->device_event = event->device_event; | |||||
654 | button_event->any.type = ptrtype; | |||||
655 | button_event->device_event.flags = XIPointerEmulated(1 << 16); | |||||
656 | /* detail is already correct */ | |||||
657 | } | |||||
658 | ||||||
659 | return nevents; | |||||
660 | } | |||||
661 | ||||||
662 | /** | |||||
663 | * Return the corresponding pointer emulation internal event type for the given | |||||
664 | * touch event or 0 if no such event type exists. | |||||
665 | */ | |||||
666 | int | |||||
667 | TouchGetPointerEventType(const InternalEvent *event) | |||||
668 | { | |||||
669 | int type = 0; | |||||
670 | ||||||
671 | switch (event->any.type) { | |||||
672 | case ET_TouchBegin: | |||||
673 | type = ET_ButtonPress; | |||||
674 | break; | |||||
675 | case ET_TouchUpdate: | |||||
676 | type = ET_Motion; | |||||
677 | break; | |||||
678 | case ET_TouchEnd: | |||||
679 | type = ET_ButtonRelease; | |||||
680 | break; | |||||
681 | default: | |||||
682 | break; | |||||
683 | } | |||||
684 | return type; | |||||
685 | } | |||||
686 | ||||||
687 | /** | |||||
688 | * @returns TRUE if the specified grab or selection is the current owner of | |||||
689 | * the touch sequence. | |||||
690 | */ | |||||
691 | Bool | |||||
692 | TouchResourceIsOwner(TouchPointInfoPtr ti, XID resource) | |||||
693 | { | |||||
694 | return (ti->listeners[0].listener == resource); | |||||
695 | } | |||||
696 | ||||||
697 | /** | |||||
698 | * Add the resource to this touch's listeners. | |||||
699 | */ | |||||
700 | void | |||||
701 | TouchAddListener(TouchPointInfoPtr ti, XID resource, int resource_type, | |||||
702 | enum InputLevel level, enum TouchListenerType type, | |||||
703 | enum TouchListenerState state, WindowPtr window, | |||||
704 | const GrabPtr grab) | |||||
705 | { | |||||
706 | GrabPtr g = NULL((void*)0); | |||||
707 | ||||||
708 | /* We need a copy of the grab, not the grab itself since that may be | |||||
709 | * deleted by a UngrabButton request and leaves us with a dangling | |||||
710 | * pointer */ | |||||
711 | if (grab) | |||||
712 | g = AllocGrab(grab); | |||||
713 | ||||||
714 | ti->listeners[ti->num_listeners].listener = resource; | |||||
715 | ti->listeners[ti->num_listeners].resource_type = resource_type; | |||||
716 | ti->listeners[ti->num_listeners].level = level; | |||||
717 | ti->listeners[ti->num_listeners].state = state; | |||||
718 | ti->listeners[ti->num_listeners].type = type; | |||||
719 | ti->listeners[ti->num_listeners].window = window; | |||||
720 | ti->listeners[ti->num_listeners].grab = g; | |||||
721 | if (grab) | |||||
722 | ti->num_grabs++; | |||||
723 | ti->num_listeners++; | |||||
724 | } | |||||
725 | ||||||
726 | /** | |||||
727 | * Remove the resource from this touch's listeners. | |||||
728 | * | |||||
729 | * @return TRUE if the resource was removed, FALSE if the resource was not | |||||
730 | * in the list | |||||
731 | */ | |||||
732 | Bool | |||||
733 | TouchRemoveListener(TouchPointInfoPtr ti, XID resource) | |||||
734 | { | |||||
735 | int i; | |||||
736 | ||||||
737 | for (i = 0; i < ti->num_listeners; i++) { | |||||
738 | int j; | |||||
739 | TouchListener *listener = &ti->listeners[i]; | |||||
740 | ||||||
741 | if (listener->listener != resource) | |||||
742 | continue; | |||||
743 | ||||||
744 | if (listener->grab) { | |||||
745 | FreeGrab(listener->grab); | |||||
746 | listener->grab = NULL((void*)0); | |||||
747 | ti->num_grabs--; | |||||
748 | } | |||||
749 | ||||||
750 | for (j = i; j < ti->num_listeners - 1; j++) | |||||
751 | ti->listeners[j] = ti->listeners[j + 1]; | |||||
752 | ti->num_listeners--; | |||||
753 | ti->listeners[ti->num_listeners].listener = 0; | |||||
754 | ti->listeners[ti->num_listeners].state = LISTENER_AWAITING_BEGIN; | |||||
755 | ||||||
756 | return TRUE1; | |||||
757 | } | |||||
758 | return FALSE0; | |||||
759 | } | |||||
760 | ||||||
761 | static void | |||||
762 | TouchAddGrabListener(DeviceIntPtr dev, TouchPointInfoPtr ti, | |||||
763 | InternalEvent *ev, GrabPtr grab) | |||||
764 | { | |||||
765 | enum TouchListenerType type = LISTENER_GRAB; | |||||
766 | ||||||
767 | /* FIXME: owner_events */ | |||||
768 | ||||||
769 | if (grab->grabtype == XI2) { | |||||
770 | if (!xi2mask_isset(grab->xi2mask, dev, XI_TouchOwnership21)) | |||||
771 | TouchEventHistoryAllocate(ti); | |||||
772 | if (!xi2mask_isset(grab->xi2mask, dev, XI_TouchBegin18)) | |||||
773 | type = LISTENER_POINTER_GRAB; | |||||
774 | } | |||||
775 | else if (grab->grabtype == XI || grab->grabtype == CORE) { | |||||
776 | TouchEventHistoryAllocate(ti); | |||||
777 | type = LISTENER_POINTER_GRAB; | |||||
778 | } | |||||
779 | ||||||
780 | /* grab listeners are always RT_NONE since we keep the grab pointer */ | |||||
781 | TouchAddListener(ti, grab->resource, RT_NONE((RESTYPE)0), grab->grabtype, | |||||
782 | type, LISTENER_AWAITING_BEGIN, grab->window, grab); | |||||
783 | } | |||||
784 | ||||||
785 | /** | |||||
786 | * Add one listener if there is a grab on the given window. | |||||
787 | */ | |||||
788 | static void | |||||
789 | TouchAddPassiveGrabListener(DeviceIntPtr dev, TouchPointInfoPtr ti, | |||||
790 | WindowPtr win, InternalEvent *ev) | |||||
791 | { | |||||
792 | GrabPtr grab; | |||||
793 | Bool check_core = IsMaster(dev) && ti->emulate_pointer; | |||||
794 | ||||||
795 | /* FIXME: make CheckPassiveGrabsOnWindow only trigger on TouchBegin */ | |||||
796 | grab = CheckPassiveGrabsOnWindow(win, dev, ev, check_core, FALSE0); | |||||
797 | if (!grab) | |||||
798 | return; | |||||
799 | ||||||
800 | TouchAddGrabListener(dev, ti, ev, grab); | |||||
801 | } | |||||
802 | ||||||
803 | static Bool | |||||
804 | TouchAddRegularListener(DeviceIntPtr dev, TouchPointInfoPtr ti, | |||||
805 | WindowPtr win, InternalEvent *ev) | |||||
806 | { | |||||
807 | InputClients *iclients = NULL((void*)0); | |||||
808 | OtherInputMasks *inputMasks = NULL((void*)0); | |||||
809 | uint16_t evtype = 0; /* may be event type or emulated event type */ | |||||
810 | enum TouchListenerType type = LISTENER_REGULAR; | |||||
811 | int mask; | |||||
812 | ||||||
813 | evtype = GetXI2Type(ev->any.type); | |||||
814 | mask = EventIsDeliverable(dev, ev->any.type, win); | |||||
815 | if (!mask && !ti->emulate_pointer) | |||||
816 | return FALSE0; | |||||
817 | else if (!mask) { /* now try for pointer event */ | |||||
818 | mask = EventIsDeliverable(dev, TouchGetPointerEventType(ev), win); | |||||
819 | if (mask) { | |||||
820 | evtype = GetXI2Type(TouchGetPointerEventType(ev)); | |||||
821 | type = LISTENER_POINTER_REGULAR; | |||||
822 | } | |||||
823 | } | |||||
824 | if (!mask) | |||||
825 | return FALSE0; | |||||
826 | ||||||
827 | inputMasks = wOtherInputMasks(win)((win)->optional ? (win)->optional->inputMasks : ((void *)0)); | |||||
828 | ||||||
829 | if (mask & EVENT_XI2_MASK(1 << 3)) { | |||||
830 | nt_list_for_each_entry(iclients, inputMasks->inputClients, next)for (iclients = inputMasks->inputClients; iclients; iclients = (iclients)->next) { | |||||
831 | if (!xi2mask_isset(iclients->xi2mask, dev, evtype)) | |||||
832 | continue; | |||||
833 | ||||||
834 | if (!xi2mask_isset(iclients->xi2mask, dev, XI_TouchOwnership21)) | |||||
835 | TouchEventHistoryAllocate(ti); | |||||
836 | ||||||
837 | TouchAddListener(ti, iclients->resource, RT_INPUTCLIENT, XI2, | |||||
838 | type, LISTENER_AWAITING_BEGIN, win, NULL((void*)0)); | |||||
839 | return TRUE1; | |||||
840 | } | |||||
841 | } | |||||
842 | ||||||
843 | if (mask & EVENT_XI1_MASK(1 << 0)) { | |||||
844 | int xitype = GetXIType(TouchGetPointerEventType(ev)); | |||||
845 | Mask xi_filter = event_get_filter_from_type(dev, xitype); | |||||
846 | ||||||
847 | nt_list_for_each_entry(iclients, inputMasks->inputClients, next)for (iclients = inputMasks->inputClients; iclients; iclients = (iclients)->next) { | |||||
| ||||||
848 | if (!(iclients->mask[dev->id] & xi_filter)) | |||||
849 | continue; | |||||
850 | ||||||
851 | TouchEventHistoryAllocate(ti); | |||||
852 | TouchAddListener(ti, iclients->resource, RT_INPUTCLIENT, XI, | |||||
853 | LISTENER_POINTER_REGULAR, LISTENER_AWAITING_BEGIN, | |||||
854 | win, NULL((void*)0)); | |||||
855 | return TRUE1; | |||||
856 | } | |||||
857 | } | |||||
858 | ||||||
859 | if (mask & EVENT_CORE_MASK(1 << 1)) { | |||||
860 | int coretype = GetCoreType(TouchGetPointerEventType(ev)); | |||||
861 | Mask core_filter = event_get_filter_from_type(dev, coretype); | |||||
862 | OtherClients *oclients; | |||||
863 | ||||||
864 | /* window owner */ | |||||
865 | if (IsMaster(dev) && (win->eventMask & core_filter)) { | |||||
866 | TouchEventHistoryAllocate(ti); | |||||
867 | TouchAddListener(ti, win->drawable.id, RT_WINDOW((RESTYPE)1|((RESTYPE)1<<30)), CORE, | |||||
868 | LISTENER_POINTER_REGULAR, LISTENER_AWAITING_BEGIN, | |||||
869 | win, NULL((void*)0)); | |||||
870 | return TRUE1; | |||||
871 | } | |||||
872 | ||||||
873 | /* all others */ | |||||
874 | nt_list_for_each_entry(oclients, wOtherClients(win), next)for (oclients = ((win)->optional ? (win)->optional-> otherClients : ((void*)0)); oclients; oclients = (oclients)-> next) { | |||||
875 | if (!(oclients->mask & core_filter)) | |||||
876 | continue; | |||||
877 | ||||||
878 | TouchEventHistoryAllocate(ti); | |||||
879 | TouchAddListener(ti, oclients->resource, RT_OTHERCLIENT((RESTYPE)8|((RESTYPE)1<<29)), CORE, | |||||
880 | type, LISTENER_AWAITING_BEGIN, win, NULL((void*)0)); | |||||
881 | return TRUE1; | |||||
882 | } | |||||
883 | } | |||||
884 | ||||||
885 | return FALSE0; | |||||
886 | } | |||||
887 | ||||||
888 | static void | |||||
889 | TouchAddActiveGrabListener(DeviceIntPtr dev, TouchPointInfoPtr ti, | |||||
890 | InternalEvent *ev, GrabPtr grab) | |||||
891 | { | |||||
892 | if (!ti->emulate_pointer && | |||||
893 | (grab->grabtype == CORE || grab->grabtype == XI)) | |||||
894 | return; | |||||
895 | ||||||
896 | if (!ti->emulate_pointer && | |||||
897 | grab->grabtype == XI2 && | |||||
898 | !xi2mask_isset(grab->xi2mask, dev, XI_TouchBegin18)) | |||||
899 | return; | |||||
900 | ||||||
901 | TouchAddGrabListener(dev, ti, ev, grab); | |||||
902 | } | |||||
903 | ||||||
904 | void | |||||
905 | TouchSetupListeners(DeviceIntPtr dev, TouchPointInfoPtr ti, InternalEvent *ev) | |||||
906 | { | |||||
907 | int i; | |||||
908 | SpritePtr sprite = &ti->sprite; | |||||
909 | WindowPtr win; | |||||
910 | ||||||
911 | if (dev->deviceGrab.grab && !dev->deviceGrab.fromPassiveGrab) | |||||
912 | TouchAddActiveGrabListener(dev, ti, ev, dev->deviceGrab.grab); | |||||
913 | ||||||
914 | /* We set up an active touch listener for existing touches, but not any | |||||
915 | * passive grab or regular listeners. */ | |||||
916 | if (ev->any.type != ET_TouchBegin) | |||||
| ||||||
917 | return; | |||||
918 | ||||||
919 | /* First, find all grabbing clients from the root window down | |||||
920 | * to the deepest child window. */ | |||||
921 | for (i = 0; i < sprite->spriteTraceGood; i++) { | |||||
922 | win = sprite->spriteTrace[i]; | |||||
923 | TouchAddPassiveGrabListener(dev, ti, win, ev); | |||||
924 | } | |||||
925 | ||||||
926 | /* Find the first client with an applicable event selection, | |||||
927 | * going from deepest child window back up to the root window. */ | |||||
928 | for (i = sprite->spriteTraceGood - 1; i >= 0; i--) { | |||||
929 | Bool delivered; | |||||
930 | ||||||
931 | win = sprite->spriteTrace[i]; | |||||
932 | delivered = TouchAddRegularListener(dev, ti, win, ev); | |||||
933 | if (delivered) | |||||
934 | return; | |||||
935 | } | |||||
936 | } | |||||
937 | ||||||
938 | /** | |||||
939 | * Remove the touch pointer grab from the device. Called from | |||||
940 | * DeactivatePointerGrab() | |||||
941 | */ | |||||
942 | void | |||||
943 | TouchRemovePointerGrab(DeviceIntPtr dev) | |||||
944 | { | |||||
945 | TouchPointInfoPtr ti; | |||||
946 | GrabPtr grab; | |||||
947 | DeviceEvent *ev; | |||||
948 | ||||||
949 | if (!dev->touch) | |||||
950 | return; | |||||
951 | ||||||
952 | grab = dev->deviceGrab.grab; | |||||
953 | if (!grab) | |||||
954 | return; | |||||
955 | ||||||
956 | ev = dev->deviceGrab.sync.event; | |||||
957 | if (!IsTouchEvent((InternalEvent *) ev)) | |||||
958 | return; | |||||
959 | ||||||
960 | ti = TouchFindByClientID(dev, ev->touchid); | |||||
961 | if (!ti) | |||||
962 | return; | |||||
963 | ||||||
964 | /* FIXME: missing a bit of code here... */ | |||||
965 | } | |||||
966 | ||||||
967 | /* As touch grabs don't turn into active grabs with their own resources, we | |||||
968 | * need to walk all the touches and remove this grab from any delivery | |||||
969 | * lists. */ | |||||
970 | void | |||||
971 | TouchListenerGone(XID resource) | |||||
972 | { | |||||
973 | TouchPointInfoPtr ti; | |||||
974 | DeviceIntPtr dev; | |||||
975 | InternalEvent *events = InitEventList(GetMaximumEventsNum()); | |||||
976 | int i, j, k, nev; | |||||
977 | ||||||
978 | if (!events) | |||||
979 | FatalError("TouchListenerGone: couldn't allocate events\n"); | |||||
980 | ||||||
981 | for (dev = inputInfo.devices; dev; dev = dev->next) { | |||||
982 | if (!dev->touch) | |||||
983 | continue; | |||||
984 | ||||||
985 | for (i = 0; i < dev->touch->num_touches; i++) { | |||||
986 | ti = &dev->touch->touches[i]; | |||||
987 | if (!ti->active) | |||||
988 | continue; | |||||
989 | ||||||
990 | for (j = 0; j < ti->num_listeners; j++) { | |||||
991 | if (CLIENT_BITS(ti->listeners[j].listener)((ti->listeners[j].listener) & (((1 << 8) - 1) << (29 - 8))) != resource) | |||||
992 | continue; | |||||
993 | ||||||
994 | nev = GetTouchOwnershipEvents(events, dev, ti, XIRejectTouch7, | |||||
995 | ti->listeners[j].listener, 0); | |||||
996 | for (k = 0; k < nev; k++) | |||||
997 | mieqProcessDeviceEvent(dev, events + k, NULL((void*)0)); | |||||
998 | ||||||
999 | break; | |||||
1000 | } | |||||
1001 | } | |||||
1002 | } | |||||
1003 | ||||||
1004 | FreeEventList(events, GetMaximumEventsNum()); | |||||
1005 | } | |||||
1006 | ||||||
1007 | int | |||||
1008 | TouchListenerAcceptReject(DeviceIntPtr dev, TouchPointInfoPtr ti, int listener, | |||||
1009 | int mode) | |||||
1010 | { | |||||
1011 | InternalEvent *events; | |||||
1012 | int nev; | |||||
1013 | int i; | |||||
1014 | ||||||
1015 | BUG_RETURN_VAL(listener < 0, BadMatch)do { if (listener < 0) { do { if (listener < 0) { ErrorFSigSafe ("BUG: triggered 'if (" "listener < 0" ")'\n"); ErrorFSigSafe ("BUG: %s:%u in %s()\n", "touch.c", 1015, __func__); if (0) ErrorFSigSafe (((void*)0)); xorg_backtrace(); } } while(0); return (8); } } while(0); | |||||
1016 | BUG_RETURN_VAL(listener >= ti->num_listeners, BadMatch)do { if (listener >= ti->num_listeners) { do { if (listener >= ti->num_listeners) { ErrorFSigSafe("BUG: triggered 'if (" "listener >= ti->num_listeners" ")'\n"); ErrorFSigSafe ("BUG: %s:%u in %s()\n", "touch.c", 1016, __func__); if (0) ErrorFSigSafe (((void*)0)); xorg_backtrace(); } } while(0); return (8); } } while(0); | |||||
1017 | ||||||
1018 | if (listener > 0) { | |||||
1019 | if (mode == XIRejectTouch7) | |||||
1020 | TouchRejected(dev, ti, ti->listeners[listener].listener, NULL((void*)0)); | |||||
1021 | else | |||||
1022 | ti->listeners[listener].state = LISTENER_EARLY_ACCEPT; | |||||
1023 | ||||||
1024 | return Success0; | |||||
1025 | } | |||||
1026 | ||||||
1027 | events = InitEventList(GetMaximumEventsNum()); | |||||
1028 | BUG_RETURN_VAL_MSG(!events, BadAlloc, "Failed to allocate touch ownership events\n")do { if (!events) { do { if (!events) { ErrorFSigSafe("BUG: triggered 'if (" "!events" ")'\n"); ErrorFSigSafe("BUG: %s:%u in %s()\n", "touch.c" , 1028, __func__); if (1) ErrorFSigSafe("Failed to allocate touch ownership events\n" ); xorg_backtrace(); } } while(0); return (11); } } while(0); | |||||
1029 | ||||||
1030 | nev = GetTouchOwnershipEvents(events, dev, ti, mode, | |||||
1031 | ti->listeners[0].listener, 0); | |||||
1032 | BUG_WARN_MSG(nev == 0, "Failed to get touch ownership events\n")do { if (nev == 0) { ErrorFSigSafe("BUG: triggered 'if (" "nev == 0" ")'\n"); ErrorFSigSafe("BUG: %s:%u in %s()\n", "touch.c", 1032 , __func__); if (1) ErrorFSigSafe("Failed to get touch ownership events\n" ); xorg_backtrace(); } } while(0); | |||||
1033 | ||||||
1034 | for (i = 0; i < nev; i++) | |||||
1035 | mieqProcessDeviceEvent(dev, events + i, NULL((void*)0)); | |||||
1036 | ||||||
1037 | FreeEventList(events, GetMaximumEventsNum()); | |||||
1038 | ||||||
1039 | return nev ? Success0 : BadMatch8; | |||||
1040 | } | |||||
1041 | ||||||
1042 | int | |||||
1043 | TouchAcceptReject(ClientPtr client, DeviceIntPtr dev, int mode, | |||||
1044 | uint32_t touchid, Window grab_window, XID *error) | |||||
1045 | { | |||||
1046 | TouchPointInfoPtr ti; | |||||
1047 | int i; | |||||
1048 | ||||||
1049 | if (!dev->touch) { | |||||
1050 | *error = dev->id; | |||||
1051 | return BadDevice; | |||||
1052 | } | |||||
1053 | ||||||
1054 | ti = TouchFindByClientID(dev, touchid); | |||||
1055 | if (!ti) { | |||||
1056 | *error = touchid; | |||||
1057 | return BadValue2; | |||||
1058 | } | |||||
1059 | ||||||
1060 | for (i = 0; i < ti->num_listeners; i++) { | |||||
1061 | if (CLIENT_ID(ti->listeners[i].listener)((int)(((ti->listeners[i].listener) & (((1 << 8) - 1) << (29 - 8))) >> (29 - 8))) == client->index && | |||||
1062 | ti->listeners[i].window->drawable.id == grab_window) | |||||
1063 | break; | |||||
1064 | } | |||||
1065 | if (i == ti->num_listeners) | |||||
1066 | return BadAccess10; | |||||
1067 | ||||||
1068 | return TouchListenerAcceptReject(dev, ti, i, mode); | |||||
1069 | } | |||||
1070 | ||||||
1071 | /** | |||||
1072 | * End physically active touches for a device. | |||||
1073 | */ | |||||
1074 | void | |||||
1075 | TouchEndPhysicallyActiveTouches(DeviceIntPtr dev) | |||||
1076 | { | |||||
1077 | InternalEvent *eventlist = InitEventList(GetMaximumEventsNum()); | |||||
1078 | int i; | |||||
1079 | ||||||
1080 | OsBlockSignals(); | |||||
1081 | mieqProcessInputEvents(); | |||||
1082 | for (i = 0; i < dev->last.num_touches; i++) { | |||||
1083 | DDXTouchPointInfoPtr ddxti = dev->last.touches + i; | |||||
1084 | ||||||
1085 | if (ddxti->active) { | |||||
1086 | int j; | |||||
1087 | int nevents = GetTouchEvents(eventlist, dev, ddxti->ddx_id, | |||||
1088 | XI_TouchEnd20, 0, NULL((void*)0)); | |||||
1089 | ||||||
1090 | for (j = 0; j < nevents; j++) | |||||
1091 | mieqProcessDeviceEvent(dev, eventlist + j, NULL((void*)0)); | |||||
1092 | } | |||||
1093 | } | |||||
1094 | OsReleaseSignals(); | |||||
1095 | ||||||
1096 | FreeEventList(eventlist, GetMaximumEventsNum()); | |||||
1097 | } | |||||
1098 | ||||||
1099 | /** | |||||
1100 | * Generate and deliver a TouchEnd event. | |||||
1101 | * | |||||
1102 | * @param dev The device to deliver the event for. | |||||
1103 | * @param ti The touch point record to deliver the event for. | |||||
1104 | * @param flags Internal event flags. The called does not need to provide | |||||
1105 | * TOUCH_CLIENT_ID and TOUCH_POINTER_EMULATED, this function will ensure | |||||
1106 | * they are set appropriately. | |||||
1107 | * @param resource The client resource to deliver to, or 0 for all clients. | |||||
1108 | */ | |||||
1109 | void | |||||
1110 | TouchEmitTouchEnd(DeviceIntPtr dev, TouchPointInfoPtr ti, int flags, XID resource) | |||||
1111 | { | |||||
1112 | InternalEvent event; | |||||
1113 | ||||||
1114 | /* We're not processing a touch end for a frozen device */ | |||||
1115 | if (dev->deviceGrab.sync.frozen) | |||||
1116 | return; | |||||
1117 | ||||||
1118 | flags |= TOUCH_CLIENT_ID(1 << 3); | |||||
1119 | if (ti->emulate_pointer) | |||||
1120 | flags |= TOUCH_POINTER_EMULATED(1 << 5); | |||||
1121 | TouchDeliverDeviceClassesChangedEvent(ti, GetTimeInMillis(), resource); | |||||
1122 | GetDixTouchEnd(&event, dev, ti, flags); | |||||
1123 | DeliverTouchEvents(dev, ti, &event, resource); | |||||
1124 | if (ti->num_grabs == 0) | |||||
1125 | UpdateDeviceState(dev, &event.device_event); | |||||
1126 | } | |||||
1127 | ||||||
1128 | void | |||||
1129 | TouchAcceptAndEnd(DeviceIntPtr dev, int touchid) | |||||
1130 | { | |||||
1131 | TouchPointInfoPtr ti = TouchFindByClientID(dev, touchid); | |||||
1132 | if (!ti) | |||||
1133 | return; | |||||
1134 | ||||||
1135 | TouchListenerAcceptReject(dev, ti, 0, XIAcceptTouch6); | |||||
1136 | if (ti->pending_finish) | |||||
1137 | TouchEmitTouchEnd(dev, ti, 0, 0); | |||||
1138 | if (ti->num_listeners <= 1) | |||||
1139 | TouchEndTouch(dev, ti); | |||||
1140 | } |