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