| 1 | /* |
| 2 | |
| 3 | Copyright 1989, 1998 The Open Group |
| 4 | |
| 5 | Permission to use, copy, modify, distribute, and sell this software and its |
| 6 | documentation for any purpose is hereby granted without fee, provided that |
| 7 | the above copyright notice appear in all copies and that both that |
| 8 | copyright notice and this permission notice appear in supporting |
| 9 | documentation. |
| 10 | |
| 11 | The above copyright notice and this permission notice shall be included in |
| 12 | all copies or substantial portions of the Software. |
| 13 | |
| 14 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 15 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 16 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 17 | OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN |
| 18 | AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| 19 | CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| 20 | |
| 21 | Except as contained in this notice, the name of The Open Group shall not be |
| 22 | used in advertising or otherwise to promote the sale, use or other dealings |
| 23 | in this Software without prior written authorization from The Open Group. |
| 24 | */ |
| 25 | |
| 26 | /** |
| 27 | * @file |
| 28 | * This file contains functions to move the pointer on the screen and/or |
| 29 | * restrict its movement. These functions are divided into two sets: |
| 30 | * Screen-specific functions that are used as function pointers from other |
| 31 | * parts of the server (and end up heavily wrapped by e.g. animcur and |
| 32 | * xfixes): |
| 33 | * miPointerConstrainCursor |
| 34 | * miPointerCursorLimits |
| 35 | * miPointerDisplayCursor |
| 36 | * miPointerRealizeCursor |
| 37 | * miPointerUnrealizeCursor |
| 38 | * miPointerSetCursorPosition |
| 39 | * miRecolorCursor |
| 40 | * miPointerDeviceInitialize |
| 41 | * miPointerDeviceCleanup |
| 42 | * If wrapped, these are the last element in the wrapping chain. They may |
| 43 | * call into sprite-specific code through further function pointers though. |
| 44 | * |
| 45 | * The second type of functions are those that are directly called by the |
| 46 | * DIX, DDX and some drivers. |
| 47 | */ |
| 48 | |
| 49 | #ifdef HAVE_DIX_CONFIG_H |
| 50 | #include <dix-config.h> |
| 51 | #endif |
| 52 | |
| 53 | #include <X11/X.h> |
| 54 | #include <X11/Xmd.h> |
| 55 | #include <X11/Xproto.h> |
| 56 | #include "misc.h" |
| 57 | #include "windowstr.h" |
| 58 | #include "pixmapstr.h" |
| 59 | #include "mi.h" |
| 60 | #include "scrnintstr.h" |
| 61 | #include "mipointrst.h" |
| 62 | #include "cursorstr.h" |
| 63 | #include "dixstruct.h" |
| 64 | #include "inputstr.h" |
| 65 | #include "inpututils.h" |
| 66 | #include "eventstr.h" |
| 67 | |
| 68 | DevPrivateKeyRec miPointerScreenKeyRec; |
| 69 | |
| 70 | #define GetScreenPrivate(s) ((miPointerScreenPtr) \ |
| 71 | dixLookupPrivate(&(s)->devPrivates, miPointerScreenKey)) |
| 72 | #define SetupScreen(s) miPointerScreenPtr pScreenPriv = GetScreenPrivate(s) |
| 73 | |
| 74 | DevPrivateKeyRec miPointerPrivKeyRec; |
| 75 | |
| 76 | #define MIPOINTER(dev) \ |
| 77 | (IsFloating(dev) ? \ |
| 78 | (miPointerPtr)dixLookupPrivate(&(dev)->devPrivates, miPointerPrivKey): \ |
| 79 | (miPointerPtr)dixLookupPrivate(&(GetMaster(dev, MASTER_POINTER))->devPrivates, miPointerPrivKey)) |
| 80 | |
| 81 | static Bool miPointerRealizeCursor(DeviceIntPtr pDev, ScreenPtr pScreen, |
| 82 | CursorPtr pCursor); |
| 83 | static Bool miPointerUnrealizeCursor(DeviceIntPtr pDev, ScreenPtr pScreen, |
| 84 | CursorPtr pCursor); |
| 85 | static Bool miPointerDisplayCursor(DeviceIntPtr pDev, ScreenPtr pScreen, |
| 86 | CursorPtr pCursor); |
| 87 | static void miPointerConstrainCursor(DeviceIntPtr pDev, ScreenPtr pScreen, |
| 88 | BoxPtr pBox); |
| 89 | static void miPointerCursorLimits(DeviceIntPtr pDev, ScreenPtr pScreen, |
| 90 | CursorPtr pCursor, BoxPtr pHotBox, |
| 91 | BoxPtr pTopLeftBox); |
| 92 | static Bool miPointerSetCursorPosition(DeviceIntPtr pDev, ScreenPtr pScreen, |
| 93 | int x, int y, Bool generateEvent); |
| 94 | static Bool miPointerCloseScreen(ScreenPtr pScreen); |
| 95 | static void miPointerMove(DeviceIntPtr pDev, ScreenPtr pScreen, int x, int y); |
| 96 | static Bool miPointerDeviceInitialize(DeviceIntPtr pDev, ScreenPtr pScreen); |
| 97 | static void miPointerDeviceCleanup(DeviceIntPtr pDev, ScreenPtr pScreen); |
| 98 | static void miPointerMoveNoEvent(DeviceIntPtr pDev, ScreenPtr pScreen, int x, |
| 99 | int y); |
| 100 | |
| 101 | static InternalEvent *mipointermove_events; /* for WarpPointer MotionNotifies */ |
| 102 | |
| 103 | Bool |
| 104 | miPointerInitialize(ScreenPtr pScreen, |
| 105 | miPointerSpriteFuncPtr spriteFuncs, |
| 106 | miPointerScreenFuncPtr screenFuncs, Bool waitForUpdate) |
| 107 | { |
| 108 | miPointerScreenPtr pScreenPriv; |
| 109 | |
| 110 | if (!dixRegisterPrivateKey(&miPointerScreenKeyRec, PRIVATE_SCREEN, 0)) |
| 111 | return FALSE; |
| 112 | |
| 113 | if (!dixRegisterPrivateKey(&miPointerPrivKeyRec, PRIVATE_DEVICE, 0)) |
| 114 | return FALSE; |
| 115 | |
| 116 | pScreenPriv = malloc(sizeof(miPointerScreenRec)); |
| 117 | if (!pScreenPriv) |
| 118 | return FALSE; |
| 119 | pScreenPriv->spriteFuncs = spriteFuncs; |
| 120 | pScreenPriv->screenFuncs = screenFuncs; |
| 121 | pScreenPriv->waitForUpdate = waitForUpdate; |
| 122 | pScreenPriv->showTransparent = FALSE; |
| 123 | pScreenPriv->CloseScreen = pScreen->CloseScreen; |
| 124 | pScreen->CloseScreen = miPointerCloseScreen; |
| 125 | dixSetPrivate(&pScreen->devPrivates, miPointerScreenKey, pScreenPriv); |
| 126 | /* |
| 127 | * set up screen cursor method table |
| 128 | */ |
| 129 | pScreen->ConstrainCursor = miPointerConstrainCursor; |
| 130 | pScreen->CursorLimits = miPointerCursorLimits; |
| 131 | pScreen->DisplayCursor = miPointerDisplayCursor; |
| 132 | pScreen->RealizeCursor = miPointerRealizeCursor; |
| 133 | pScreen->UnrealizeCursor = miPointerUnrealizeCursor; |
| 134 | pScreen->SetCursorPosition = miPointerSetCursorPosition; |
| 135 | pScreen->RecolorCursor = miRecolorCursor; |
| 136 | pScreen->DeviceCursorInitialize = miPointerDeviceInitialize; |
| 137 | pScreen->DeviceCursorCleanup = miPointerDeviceCleanup; |
| 138 | |
| 139 | mipointermove_events = NULL; |
| 140 | return TRUE; |
| 141 | } |
| 142 | |
| 143 | /** |
| 144 | * Destroy screen-specific information. |
| 145 | * |
| 146 | * @param index Screen index of the screen in screenInfo.screens[] |
| 147 | * @param pScreen The actual screen pointer |
| 148 | */ |
| 149 | static Bool |
| 150 | miPointerCloseScreen(ScreenPtr pScreen) |
| 151 | { |
| 152 | SetupScreen(pScreen); |
| 153 | |
| 154 | pScreen->CloseScreen = pScreenPriv->CloseScreen; |
| 155 | free((pointer) pScreenPriv); |
| 156 | FreeEventList(mipointermove_events, GetMaximumEventsNum()); |
| 157 | mipointermove_events = NULL; |
| 158 | return (*pScreen->CloseScreen) (pScreen); |
| 159 | } |
| 160 | |
| 161 | /* |
| 162 | * DIX/DDX interface routines |
| 163 | */ |
| 164 | |
| 165 | static Bool |
| 166 | miPointerRealizeCursor(DeviceIntPtr pDev, ScreenPtr pScreen, CursorPtr pCursor) |
| 167 | { |
| 168 | SetupScreen(pScreen); |
| 169 | return (*pScreenPriv->spriteFuncs->RealizeCursor) (pDev, pScreen, pCursor); |
| 170 | } |
| 171 | |
| 172 | static Bool |
| 173 | miPointerUnrealizeCursor(DeviceIntPtr pDev, |
| 174 | ScreenPtr pScreen, CursorPtr pCursor) |
| 175 | { |
| 176 | SetupScreen(pScreen); |
| 177 | return (*pScreenPriv->spriteFuncs->UnrealizeCursor) (pDev, pScreen, |
| 178 | pCursor); |
| 179 | } |
| 180 | |
| 181 | static Bool |
| 182 | miPointerDisplayCursor(DeviceIntPtr pDev, ScreenPtr pScreen, CursorPtr pCursor) |
| 183 | { |
| 184 | miPointerPtr pPointer; |
| 185 | |
| 186 | /* return for keyboards */ |
| 187 | if (!IsPointerDevice(pDev)) |
| 188 | return FALSE; |
| 189 | |
| 190 | pPointer = MIPOINTER(pDev); |
| 191 | |
| 192 | pPointer->pCursor = pCursor; |
| 193 | pPointer->pScreen = pScreen; |
| 194 | miPointerUpdateSprite(pDev); |
| 195 | return TRUE; |
| 196 | } |
| 197 | |
| 198 | /** |
| 199 | * Set up the constraints for the given device. This function does not |
| 200 | * actually constrain the cursor but merely copies the given box to the |
| 201 | * internal constraint storage. |
| 202 | * |
| 203 | * @param pDev The device to constrain to the box |
| 204 | * @param pBox The rectangle to constrain the cursor to |
| 205 | * @param pScreen Used for copying screen confinement |
| 206 | */ |
| 207 | static void |
| 208 | miPointerConstrainCursor(DeviceIntPtr pDev, ScreenPtr pScreen, BoxPtr pBox) |
| 209 | { |
| 210 | miPointerPtr pPointer; |
| 211 | |
| 212 | pPointer = MIPOINTER(pDev); |
| 213 | |
| 214 | pPointer->limits = *pBox; |
| 215 | pPointer->confined = PointerConfinedToScreen(pDev); |
| 216 | } |
| 217 | |
| 218 | /** |
| 219 | * Should calculate the box for the given cursor, based on screen and the |
| 220 | * confinement given. But we assume that whatever box is passed in is valid |
| 221 | * anyway. |
| 222 | * |
| 223 | * @param pDev The device to calculate the cursor limits for |
| 224 | * @param pScreen The screen the confinement happens on |
| 225 | * @param pCursor The screen the confinement happens on |
| 226 | * @param pHotBox The confinement box for the cursor |
| 227 | * @param[out] pTopLeftBox The new confinement box, always *pHotBox. |
| 228 | */ |
| 229 | static void |
| 230 | miPointerCursorLimits(DeviceIntPtr pDev, ScreenPtr pScreen, CursorPtr pCursor, |
| 231 | BoxPtr pHotBox, BoxPtr pTopLeftBox) |
| 232 | { |
| 233 | *pTopLeftBox = *pHotBox; |
| 234 | } |
| 235 | |
| 236 | /** |
| 237 | * Set the device's cursor position to the x/y position on the given screen. |
| 238 | * Generates and event if required. |
| 239 | * |
| 240 | * This function is called from: |
| 241 | * - sprite init code to place onto initial position |
| 242 | * - the various WarpPointer implementations (core, XI, Xinerama, dmx,…) |
| 243 | * - during the cursor update path in CheckMotion |
| 244 | * - in the Xinerama part of NewCurrentScreen |
| 245 | * - when a RandR/RandR1.2 mode was applied (it may have moved the pointer, so |
| 246 | * it's set back to the original pos) |
| 247 | * |
| 248 | * @param pDev The device to move |
| 249 | * @param pScreen The screen the device is on |
| 250 | * @param x The x coordinate in per-screen coordinates |
| 251 | * @param y The y coordinate in per-screen coordinates |
| 252 | * @param generateEvent True if the pointer movement should generate an |
| 253 | * event. |
| 254 | * |
| 255 | * @return TRUE in all cases |
| 256 | */ |
| 257 | static Bool |
| 258 | miPointerSetCursorPosition(DeviceIntPtr pDev, ScreenPtr pScreen, |
| 259 | int x, int y, Bool generateEvent) |
| 260 | { |
| 261 | SetupScreen(pScreen); |
| 262 | miPointerPtr pPointer = MIPOINTER(pDev); |
| 263 | |
| 264 | pPointer->generateEvent = generateEvent; |
| 265 | |
| 266 | if (pScreen->ConstrainCursorHarder) |
| 267 | pScreen->ConstrainCursorHarder(pDev, pScreen, Absolute, &x, &y); |
| 268 | |
| 269 | /* device dependent - must pend signal and call miPointerWarpCursor */ |
| 270 | (*pScreenPriv->screenFuncs->WarpCursor) (pDev, pScreen, x, y); |
| 271 | if (!generateEvent) |
| 272 | miPointerUpdateSprite(pDev); |
| 273 | return TRUE; |
| 274 | } |
| 275 | |
| 276 | /** |
| 277 | * Set up sprite information for the device. |
| 278 | * This function will be called once for each device after it is initialized |
| 279 | * in the DIX. |
| 280 | * |
| 281 | * @param pDev The newly created device |
| 282 | * @param pScreen The initial sprite scree. |
| 283 | */ |
| 284 | static Bool |
| 285 | miPointerDeviceInitialize(DeviceIntPtr pDev, ScreenPtr pScreen) |
| 286 | { |
| 287 | miPointerPtr pPointer; |
| 288 | |
| 289 | SetupScreen(pScreen); |
| 290 | |
| 291 | pPointer = malloc(sizeof(miPointerRec)); |
| 292 | if (!pPointer) |
| 293 | return FALSE; |
| 294 | |
| 295 | pPointer->pScreen = NULL; |
| 296 | pPointer->pSpriteScreen = NULL; |
| 297 | pPointer->pCursor = NULL; |
| 298 | pPointer->pSpriteCursor = NULL; |
| 299 | pPointer->limits.x1 = 0; |
| 300 | pPointer->limits.x2 = 32767; |
| 301 | pPointer->limits.y1 = 0; |
| 302 | pPointer->limits.y2 = 32767; |
| 303 | pPointer->confined = FALSE; |
| 304 | pPointer->x = 0; |
| 305 | pPointer->y = 0; |
| 306 | pPointer->generateEvent = FALSE; |
| 307 | |
| 308 | if (!((*pScreenPriv->spriteFuncs->DeviceCursorInitialize) (pDev, pScreen))) { |
| 309 | free(pPointer); |
| 310 | return FALSE; |
| 311 | } |
| 312 | |
| 313 | dixSetPrivate(&pDev->devPrivates, miPointerPrivKey, pPointer); |
| 314 | return TRUE; |
| 315 | } |
| 316 | |
| 317 | /** |
| 318 | * Clean up after device. |
| 319 | * This function will be called once before the device is freed in the DIX |
| 320 | * |
| 321 | * @param pDev The device to be removed from the server |
| 322 | * @param pScreen Current screen of the device |
| 323 | */ |
| 324 | static void |
| 325 | miPointerDeviceCleanup(DeviceIntPtr pDev, ScreenPtr pScreen) |
| 326 | { |
| 327 | SetupScreen(pScreen); |
| 328 | |
| 329 | if (!IsMaster(pDev) && !IsFloating(pDev)) |
| 330 | return; |
| 331 | |
| 332 | (*pScreenPriv->spriteFuncs->DeviceCursorCleanup) (pDev, pScreen); |
| 333 | free(dixLookupPrivate(&pDev->devPrivates, miPointerPrivKey)); |
| 334 | dixSetPrivate(&pDev->devPrivates, miPointerPrivKey, NULL); |
| 335 | } |
| 336 | |
| 337 | /** |
| 338 | * Warp the pointer to the given position on the given screen. May generate |
| 339 | * an event, depending on whether we're coming from miPointerSetPosition. |
| 340 | * |
| 341 | * Once signals are ignored, the WarpCursor function can call this |
| 342 | * |
| 343 | * @param pDev The device to warp |
| 344 | * @param pScreen Screen to warp on |
| 345 | * @param x The x coordinate in per-screen coordinates |
| 346 | * @param y The y coordinate in per-screen coordinates |
| 347 | */ |
| 348 | |
| 349 | void |
| 350 | miPointerWarpCursor(DeviceIntPtr pDev, ScreenPtr pScreen, int x, int y) |
| 351 | { |
| 352 | miPointerPtr pPointer; |
| 353 | BOOL changedScreen = FALSE; |
| 354 | |
| 355 | SetupScreen(pScreen); |
| 356 | pPointer = MIPOINTER(pDev); |
| 357 | |
| 358 | if (pPointer->pScreen != pScreen) { |
| 359 | mieqSwitchScreen(pDev, pScreen, TRUE); |
| 360 | changedScreen = TRUE; |
| 361 | } |
| 362 | |
| 363 | if (pPointer->generateEvent) |
| 364 | miPointerMove(pDev, pScreen, x, y); |
| 365 | else |
| 366 | miPointerMoveNoEvent(pDev, pScreen, x, y); |
| 367 | |
| 368 | /* Don't call USFS if we use Xinerama, otherwise the root window is |
| 369 | * updated to the second screen, and we never receive any events. |
| 370 | * (FDO bug #18668) */ |
| 371 | if (changedScreen |
| 372 | #ifdef PANORAMIX |
| 373 | && noPanoramiXExtension |
| 374 | #endif |
| 375 | ) |
| 376 | UpdateSpriteForScreen(pDev, pScreen); |
| 377 | } |
| 378 | |
| 379 | /** |
| 380 | * Syncronize the sprite with the cursor. |
| 381 | * |
| 382 | * @param pDev The device to sync |
| 383 | */ |
| 384 | void |
| 385 | miPointerUpdateSprite(DeviceIntPtr pDev) |
| 386 | { |
| 387 | ScreenPtr pScreen; |
| 388 | miPointerScreenPtr pScreenPriv; |
| 389 | CursorPtr pCursor; |
| 390 | int x, y, devx, devy; |
| 391 | miPointerPtr pPointer; |
| 392 | |
| 393 | if (!pDev || !pDev->coreEvents) |
| 394 | return; |
| 395 | |
| 396 | pPointer = MIPOINTER(pDev); |
| 397 | |
| 398 | if (!pPointer) |
| 399 | return; |
| 400 | |
| 401 | pScreen = pPointer->pScreen; |
| 402 | if (!pScreen) |
| 403 | return; |
| 404 | |
| 405 | x = pPointer->x; |
| 406 | y = pPointer->y; |
| 407 | devx = pPointer->devx; |
| 408 | devy = pPointer->devy; |
| 409 | |
| 410 | pScreenPriv = GetScreenPrivate(pScreen); |
| 411 | /* |
| 412 | * if the cursor has switched screens, disable the sprite |
| 413 | * on the old screen |
| 414 | */ |
| 415 | if (pScreen != pPointer->pSpriteScreen) { |
| 416 | if (pPointer->pSpriteScreen) { |
| 417 | miPointerScreenPtr pOldPriv; |
| 418 | |
| 419 | pOldPriv = GetScreenPrivate(pPointer->pSpriteScreen); |
| 420 | if (pPointer->pCursor) { |
| 421 | (*pOldPriv->spriteFuncs->SetCursor) |
| 422 | (pDev, pPointer->pSpriteScreen, NullCursor, 0, 0); |
| 423 | } |
| 424 | (*pOldPriv->screenFuncs->CrossScreen) (pPointer->pSpriteScreen, |
| 425 | FALSE); |
| 426 | } |
| 427 | (*pScreenPriv->screenFuncs->CrossScreen) (pScreen, TRUE); |
| 428 | (*pScreenPriv->spriteFuncs->SetCursor) |
| 429 | (pDev, pScreen, pPointer->pCursor, x, y); |
| 430 | pPointer->devx = x; |
| 431 | pPointer->devy = y; |
| 432 | pPointer->pSpriteCursor = pPointer->pCursor; |
| 433 | pPointer->pSpriteScreen = pScreen; |
| 434 | } |
| 435 | /* |
| 436 | * if the cursor has changed, display the new one |
| 437 | */ |
| 438 | else if (pPointer->pCursor != pPointer->pSpriteCursor) { |
| 439 | pCursor = pPointer->pCursor; |
| 440 | if (!pCursor || |
| 441 | (pCursor->bits->emptyMask && !pScreenPriv->showTransparent)) |
| 442 | pCursor = NullCursor; |
| 443 | (*pScreenPriv->spriteFuncs->SetCursor) (pDev, pScreen, pCursor, x, y); |
| 444 | |
| 445 | pPointer->devx = x; |
| 446 | pPointer->devy = y; |
| 447 | pPointer->pSpriteCursor = pPointer->pCursor; |
| 448 | } |
| 449 | else if (x != devx || y != devy) { |
| 450 | pPointer->devx = x; |
| 451 | pPointer->devy = y; |
| 452 | if (pPointer->pCursor && !pPointer->pCursor->bits->emptyMask) |
| 453 | (*pScreenPriv->spriteFuncs->MoveCursor) (pDev, pScreen, x, y); |
| 454 | } |
| 455 | } |
| 456 | |
| 457 | /** |
| 458 | * Set the device to the coordinates on the given screen. |
| 459 | * |
| 460 | * @param pDev The device to move |
| 461 | * @param screen_no Index of the screen to move to |
| 462 | * @param x The x coordinate in per-screen coordinates |
| 463 | * @param y The y coordinate in per-screen coordinates |
| 464 | */ |
| 465 | void |
| 466 | miPointerSetScreen(DeviceIntPtr pDev, int screen_no, int x, int y) |
| 467 | { |
| 468 | miPointerScreenPtr pScreenPriv; |
| 469 | ScreenPtr pScreen; |
| 470 | miPointerPtr pPointer; |
| 471 | |
| 472 | pPointer = MIPOINTER(pDev); |
| 473 | |
| 474 | pScreen = screenInfo.screens[screen_no]; |
| 475 | pScreenPriv = GetScreenPrivate(pScreen); |
| 476 | mieqSwitchScreen(pDev, pScreen, FALSE); |
| 477 | NewCurrentScreen(pDev, pScreen, x, y); |
| 478 | |
| 479 | pPointer->limits.x2 = pScreen->width; |
| 480 | pPointer->limits.y2 = pScreen->height; |
| 481 | } |
| 482 | |
| 483 | /** |
| 484 | * @return The current screen of the given device or NULL. |
| 485 | */ |
| 486 | ScreenPtr |
| 487 | miPointerGetScreen(DeviceIntPtr pDev) |
| 488 | { |
| 489 | miPointerPtr pPointer = MIPOINTER(pDev); |
| 490 | |
| 491 | return (pPointer) ? pPointer->pScreen : NULL; |
| 492 | } |
| 493 | |
| 494 | /* Controls whether the cursor image should be updated immediately when |
| 495 | moved (FALSE) or if something else will be responsible for updating |
| 496 | it later (TRUE). Returns current setting. |
| 497 | Caller is responsible for calling OsBlockSignal first. |
| 498 | */ |
| 499 | Bool |
| 500 | miPointerSetWaitForUpdate(ScreenPtr pScreen, Bool wait) |
| 501 | { |
| 502 | SetupScreen(pScreen); |
| 503 | Bool prevWait = pScreenPriv->waitForUpdate; |
| 504 | |
| 505 | pScreenPriv->waitForUpdate = wait; |
| 506 | return prevWait; |
| 507 | } |
| 508 | |
| 509 | /* Move the pointer on the current screen, and update the sprite. */ |
| 510 | static void |
| 511 | miPointerMoveNoEvent(DeviceIntPtr pDev, ScreenPtr pScreen, int x, int y) |
| 512 | { |
| 513 | miPointerPtr pPointer; |
| 514 | |
| 515 | SetupScreen(pScreen); |
| 516 | |
| 517 | pPointer = MIPOINTER(pDev); |
| 518 | |
| 519 | /* Hack: We mustn't call into ->MoveCursor for anything but the |
| 520 | * VCP, as this may cause a non-HW rendered cursor to be rendered during |
| 521 | * SIGIO. This again leads to allocs during SIGIO which leads to SIGABRT. |
| 522 | */ |
| 523 | if (GetMaster(pDev, MASTER_POINTER) == inputInfo.pointer |
| 524 | &&!pScreenPriv->waitForUpdate && pScreen == pPointer->pSpriteScreen) { |
| 525 | pPointer->devx = x; |
| 526 | pPointer->devy = y; |
| 527 | if (pPointer->pCursor && !pPointer->pCursor->bits->emptyMask) |
| 528 | (*pScreenPriv->spriteFuncs->MoveCursor) (pDev, pScreen, x, y); |
| 529 | } |
| 530 | |
| 531 | pPointer->x = x; |
| 532 | pPointer->y = y; |
| 533 | pPointer->pScreen = pScreen; |
| 534 | } |
| 535 | |
| 536 | /** |
| 537 | * Set the devices' cursor position to the given x/y position. |
| 538 | * |
| 539 | * This function is called during the pointer update path in |
| 540 | * GetPointerEvents and friends (and the same in the xwin DDX). |
| 541 | * |
| 542 | * The coordinates provided are always absolute. The parameter mode whether |
| 543 | * it was relative or absolute movement that landed us at those coordinates. |
| 544 | * |
| 545 | * @param pDev The device to move |
| 546 | * @param mode Movement mode (Absolute or Relative) |
| 547 | * @param[in,out] screenx The x coordinate in desktop coordinates |
| 548 | * @param[in,out] screeny The y coordinate in desktop coordinates |
| 549 | */ |
| 550 | ScreenPtr |
| 551 | miPointerSetPosition(DeviceIntPtr pDev, int mode, double *screenx, |
| 552 | double *screeny, |
| 553 | int *nevents, InternalEvent* events) |
| 554 | { |
| 555 | miPointerScreenPtr pScreenPriv; |
| 556 | ScreenPtr pScreen; |
| 557 | ScreenPtr newScreen; |
| 558 | int x, y; |
| 559 | Bool switch_screen = FALSE; |
| 560 | Bool should_constrain_barriers = FALSE; |
| 561 | int i; |
| 562 | |
| 563 | miPointerPtr pPointer; |
| 564 | |
| 565 | pPointer = MIPOINTER(pDev); |
| 566 | pScreen = pPointer->pScreen; |
| 567 | |
| 568 | x = trunc(*screenx); |
| 569 | y = trunc(*screeny); |
| 570 | |
| 571 | switch_screen = !point_on_screen(pScreen, x, y); |
| 572 | |
| 573 | /* Switch to per-screen coordinates for CursorOffScreen and |
| 574 | * Pointer->limits */ |
| 575 | x -= pScreen->x; |
| 576 | y -= pScreen->y; |
| 577 | |
| 578 | should_constrain_barriers = (mode == Relative); |
| 579 | |
| 580 | if (should_constrain_barriers) { |
| 581 | /* coordinates after clamped to a barrier */ |
| 582 | int constrained_x, constrained_y; |
| 583 | int current_x, current_y; /* current position in per-screen coord */ |
| 584 | |
| 585 | current_x = MIPOINTER(pDev)->x - pScreen->y; |
| 586 | current_y = MIPOINTER(pDev)->y - pScreen->x; |
| 587 | |
| 588 | input_constrain_cursor(pDev, pScreen, |
| 589 | current_x, current_y, x, y, |
| 590 | &constrained_x, &constrained_y, |
| 591 | nevents, events); |
| 592 | |
| 593 | x = constrained_x; |
| 594 | y = constrained_y; |
| 595 | } |
| 596 | |
| 597 | if (switch_screen) { |
| 598 | pScreenPriv = GetScreenPrivate(pScreen); |
| 599 | if (!pPointer->confined) { |
| 600 | newScreen = pScreen; |
| 601 | (*pScreenPriv->screenFuncs->CursorOffScreen) (&newScreen, &x, &y); |
| 602 | if (newScreen != pScreen) { |
| 603 | pScreen = newScreen; |
| 604 | mieqSwitchScreen(pDev, pScreen, FALSE); |
| 605 | /* Smash the confine to the new screen */ |
| 606 | pPointer->limits.x2 = pScreen->width; |
| 607 | pPointer->limits.y2 = pScreen->height; |
| 608 | } |
| 609 | } |
| 610 | } |
| 611 | /* Constrain the sprite to the current limits. */ |
| 612 | if (x < pPointer->limits.x1) |
| 613 | x = pPointer->limits.x1; |
| 614 | if (x >= pPointer->limits.x2) |
| 615 | x = pPointer->limits.x2 - 1; |
| 616 | if (y < pPointer->limits.y1) |
| 617 | y = pPointer->limits.y1; |
| 618 | if (y >= pPointer->limits.y2) |
| 619 | y = pPointer->limits.y2 - 1; |
| 620 | |
| 621 | if (pScreen->ConstrainCursorHarder) |
| 622 | pScreen->ConstrainCursorHarder(pDev, pScreen, mode, &x, &y); |
| 623 | |
| 624 | if (pPointer->x != x || pPointer->y != y || pPointer->pScreen != pScreen) |
| 625 | miPointerMoveNoEvent(pDev, pScreen, x, y); |
| 626 | |
| 627 | /* check if we generated any barrier events and if so, update root x/y |
| 628 | * to the fully constrained coords */ |
| 629 | if (should_constrain_barriers) { |
| 630 | for (i = 0; i < *nevents; i++) { |
| 631 | if (events[i].any.type == ET_BarrierHit || |
| 632 | events[i].any.type == ET_BarrierLeave) { |
| 633 | events[i].barrier_event.root_x = x; |
| 634 | events[i].barrier_event.root_y = y; |
| 635 | } |
| 636 | } |
| 637 | } |
| 638 | |
| 639 | /* Convert to desktop coordinates again */ |
| 640 | x += pScreen->x; |
| 641 | y += pScreen->y; |
| 642 | |
| 643 | /* In the event we actually change screen or we get confined, we just |
| 644 | * drop the float component on the floor |
| 645 | * FIXME: only drop remainder for ConstrainCursorHarder, not for screen |
| 646 | * crossings */ |
| 647 | if (x != trunc(*screenx)) |
| 648 | *screenx = x; |
| 649 | if (y != trunc(*screeny)) |
| 650 | *screeny = y; |
| 651 | |
| 652 | return pScreen; |
| 653 | } |
| 654 | |
| 655 | /** |
| 656 | * Get the current position of the device in desktop coordinates. |
| 657 | * |
| 658 | * @param x Return value for the current x coordinate in desktop coordiates. |
| 659 | * @param y Return value for the current y coordinate in desktop coordiates. |
| 660 | */ |
| 661 | void |
| 662 | miPointerGetPosition(DeviceIntPtr pDev, int *x, int *y) |
| 663 | { |
| 664 | *x = MIPOINTER(pDev)->x; |
| 665 | *y = MIPOINTER(pDev)->y; |
| 666 | } |
| 667 | |
| 668 | #ifdef XQUARTZ |
| 669 | #include <pthread.h> |
| 670 | void darwinEvents_lock(void); |
| 671 | void darwinEvents_unlock(void); |
| 672 | #endif |
| 673 | |
| 674 | /** |
| 675 | * Move the device's pointer to the x/y coordinates on the given screen. |
| 676 | * This function generates and enqueues pointer events. |
| 677 | * |
| 678 | * @param pDev The device to move |
| 679 | * @param pScreen The screen the device is on |
| 680 | * @param x The x coordinate in per-screen coordinates |
| 681 | * @param y The y coordinate in per-screen coordinates |
| 682 | */ |
| 683 | void |
| 684 | miPointerMove(DeviceIntPtr pDev, ScreenPtr pScreen, int x, int y) |
| 685 | { |
| 686 | int i, nevents; |
| 687 | int valuators[2]; |
| 688 | ValuatorMask mask; |
| 689 | |
| 690 | miPointerMoveNoEvent(pDev, pScreen, x, y); |
| 691 | |
| 692 | /* generate motion notify */ |
| 693 | valuators[0] = x; |
| 694 | valuators[1] = y; |
| 695 | |
| 696 | if (!mipointermove_events) { |
| 697 | mipointermove_events = InitEventList(GetMaximumEventsNum()); |
| 698 | |
| 699 | if (!mipointermove_events) { |
| 700 | FatalError("Could not allocate event store.\n"); |
| 701 | return; |
| 702 | } |
| 703 | } |
| 704 | |
| 705 | valuator_mask_set_range(&mask, 0, 2, valuators); |
| 706 | nevents = GetPointerEvents(mipointermove_events, pDev, MotionNotify, 0, |
| 707 | POINTER_SCREEN | POINTER_ABSOLUTE | |
| 708 | POINTER_NORAW, &mask); |
| 709 | |
| 710 | OsBlockSignals(); |
| 711 | #ifdef XQUARTZ |
| 712 | darwinEvents_lock(); |
| 713 | #endif |
| 714 | for (i = 0; i < nevents; i++) |
| 715 | mieqEnqueue(pDev, &mipointermove_events[i]); |
| 716 | #ifdef XQUARTZ |
| 717 | darwinEvents_unlock(); |
| 718 | #endif |
| 719 | OsReleaseSignals(); |
| 720 | } |