| 1 | /* |
| 2 | * Copyright 2001-2004 Red Hat Inc., Durham, North Carolina. |
| 3 | * |
| 4 | * All Rights Reserved. |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining |
| 7 | * a copy of this software and associated documentation files (the |
| 8 | * "Software"), to deal in the Software without restriction, including |
| 9 | * without limitation on the rights to use, copy, modify, merge, |
| 10 | * publish, distribute, sublicense, and/or sell copies of the Software, |
| 11 | * and to permit persons to whom the Software is furnished to do so, |
| 12 | * subject to the following conditions: |
| 13 | * |
| 14 | * The above copyright notice and this permission notice (including the |
| 15 | * next paragraph) shall be included in all copies or substantial |
| 16 | * portions of the Software. |
| 17 | * |
| 18 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 19 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 20 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| 21 | * NON-INFRINGEMENT. IN NO EVENT SHALL RED HAT AND/OR THEIR SUPPLIERS |
| 22 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
| 23 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| 24 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 25 | * SOFTWARE. |
| 26 | */ |
| 27 | |
| 28 | /* |
| 29 | * Authors: |
| 30 | * David H. Dawes <dawes@xfree86.org> |
| 31 | * Kevin E. Martin <kem@redhat.com> |
| 32 | * Rickard E. (Rik) Faith <faith@redhat.com> |
| 33 | * |
| 34 | */ |
| 35 | |
| 36 | /** \file |
| 37 | * This file contains code than supports cursor movement, including the |
| 38 | * code that initializes and reinitializes the screen positions and |
| 39 | * computes screen overlap. |
| 40 | * |
| 41 | * "This code is based very closely on the XFree86 equivalent |
| 42 | * (xfree86/common/xf86Cursor.c)." --David Dawes. |
| 43 | * |
| 44 | * "This code was then extensively re-written, as explained here." |
| 45 | * --Rik Faith |
| 46 | * |
| 47 | * The code in xf86Cursor.c used edge lists to implement the |
| 48 | * CursorOffScreen function. The edge list computation was complex |
| 49 | * (especially in the face of arbitrarily overlapping screens) compared |
| 50 | * with the speed savings in the CursorOffScreen function. The new |
| 51 | * implementation has erred on the side of correctness, readability, and |
| 52 | * maintainability over efficiency. For the common (non-edge) case, the |
| 53 | * dmxCursorOffScreen function does avoid a loop over all the screens. |
| 54 | * When the cursor has left the screen, all the screens are searched, |
| 55 | * and the first screen (in dmxScreens order) containing the cursor will |
| 56 | * be returned. If run-time profiling shows that this routing is a |
| 57 | * performance bottle-neck, then an edge list may have to be |
| 58 | * reimplemented. An edge list algorithm is O(edges) whereas the new |
| 59 | * algorithm is O(dmxNumScreens). Since edges is usually 1-3 and |
| 60 | * dmxNumScreens may be 30-60 for large backend walls, this trade off |
| 61 | * may be compelling. |
| 62 | * |
| 63 | * The xf86InitOrigins routine uses bit masks during the computation and |
| 64 | * is therefore limited to the length of a word (e.g., 32 or 64 bits) |
| 65 | * screens. Because Xdmx is expected to be used with a large number of |
| 66 | * backend displays, this limitation was removed. The new |
| 67 | * implementation has erred on the side of readability over efficiency, |
| 68 | * using the dmxSL* routines to manage a screen list instead of a |
| 69 | * bitmap, and a function call to decrease the length of the main |
| 70 | * routine. Both algorithms are of the same order, and both are called |
| 71 | * only at server generation time, so trading clarity and long-term |
| 72 | * maintainability for efficiency does not seem justified in this case. |
| 73 | */ |
| 74 | |
| 75 | #ifdef HAVE_DMX_CONFIG_H |
| 76 | #include <dmx-config.h> |
| 77 | #endif |
| 78 | |
| 79 | #define DMX_CURSOR_DEBUG 0 |
| 80 | |
| 81 | #include "dmx.h" |
| 82 | #include "dmxsync.h" |
| 83 | #include "dmxcursor.h" |
| 84 | #include "dmxlog.h" |
| 85 | #include "dmxprop.h" |
| 86 | #include "dmxinput.h" |
| 87 | |
| 88 | #include "mipointer.h" |
| 89 | #include "windowstr.h" |
| 90 | #include "globals.h" |
| 91 | #include "cursorstr.h" |
| 92 | #include "dixevents.h" /* For GetSpriteCursor() */ |
| 93 | #include "inputstr.h" /* for inputInfo.pointer */ |
| 94 | |
| 95 | #if DMX_CURSOR_DEBUG |
| 96 | #define DMXDBG0(f) dmxLog(dmxDebug,f) |
| 97 | #define DMXDBG1(f,a) dmxLog(dmxDebug,f,a) |
| 98 | #define DMXDBG2(f,a,b) dmxLog(dmxDebug,f,a,b) |
| 99 | #define DMXDBG3(f,a,b,c) dmxLog(dmxDebug,f,a,b,c) |
| 100 | #define DMXDBG4(f,a,b,c,d) dmxLog(dmxDebug,f,a,b,c,d) |
| 101 | #define DMXDBG5(f,a,b,c,d,e) dmxLog(dmxDebug,f,a,b,c,d,e) |
| 102 | #define DMXDBG6(f,a,b,c,d,e,g) dmxLog(dmxDebug,f,a,b,c,d,e,g) |
| 103 | #define DMXDBG7(f,a,b,c,d,e,g,h) dmxLog(dmxDebug,f,a,b,c,d,e,g,h) |
| 104 | #else |
| 105 | #define DMXDBG0(f) |
| 106 | #define DMXDBG1(f,a) |
| 107 | #define DMXDBG2(f,a,b) |
| 108 | #define DMXDBG3(f,a,b,c) |
| 109 | #define DMXDBG4(f,a,b,c,d) |
| 110 | #define DMXDBG5(f,a,b,c,d,e) |
| 111 | #define DMXDBG6(f,a,b,c,d,e,g) |
| 112 | #define DMXDBG7(f,a,b,c,d,e,g,h) |
| 113 | #endif |
| 114 | |
| 115 | static int dmxCursorDoMultiCursors = 1; |
| 116 | |
| 117 | /** Turn off support for displaying multiple cursors on overlapped |
| 118 | back-end displays. See #dmxCursorDoMultiCursors. */ |
| 119 | void |
| 120 | dmxCursorNoMulti(void) |
| 121 | { |
| 122 | dmxCursorDoMultiCursors = 0; |
| 123 | } |
| 124 | |
| 125 | static Bool |
| 126 | dmxCursorOffScreen(ScreenPtr *ppScreen, int *x, int *y) |
| 127 | { |
| 128 | DMXScreenInfo *dmxScreen; |
| 129 | int i; |
| 130 | int localX = *x; |
| 131 | int localY = *y; |
| 132 | int globalX; |
| 133 | int globalY; |
| 134 | |
| 135 | if (screenInfo.numScreens == 1) |
| 136 | return FALSE; |
| 137 | |
| 138 | /* On current screen? */ |
| 139 | dmxScreen = &dmxScreens[(*ppScreen)->myNum]; |
| 140 | if (localX >= 0 |
| 141 | && localX < dmxScreen->rootWidth |
| 142 | && localY >= 0 && localY < dmxScreen->rootHeight) |
| 143 | return FALSE; |
| 144 | |
| 145 | /* Convert to global coordinate space */ |
| 146 | globalX = dmxScreen->rootXOrigin + localX; |
| 147 | globalY = dmxScreen->rootYOrigin + localY; |
| 148 | |
| 149 | /* Is cursor on the current screen? |
| 150 | * This efficiently exits this routine |
| 151 | * for the most common case. */ |
| 152 | if (ppScreen && *ppScreen) { |
| 153 | dmxScreen = &dmxScreens[(*ppScreen)->myNum]; |
| 154 | if (globalX >= dmxScreen->rootXOrigin |
| 155 | && globalX < dmxScreen->rootXOrigin + dmxScreen->rootWidth |
| 156 | && globalY >= dmxScreen->rootYOrigin |
| 157 | && globalY < dmxScreen->rootYOrigin + dmxScreen->rootHeight) |
| 158 | return FALSE; |
| 159 | } |
| 160 | |
| 161 | /* Find first screen cursor is on */ |
| 162 | for (i = 0; i < dmxNumScreens; i++) { |
| 163 | dmxScreen = &dmxScreens[i]; |
| 164 | if (globalX >= dmxScreen->rootXOrigin |
| 165 | && globalX < dmxScreen->rootXOrigin + dmxScreen->rootWidth |
| 166 | && globalY >= dmxScreen->rootYOrigin |
| 167 | && globalY < dmxScreen->rootYOrigin + dmxScreen->rootHeight) { |
| 168 | if (dmxScreen->index == (*ppScreen)->myNum) |
| 169 | return FALSE; |
| 170 | *ppScreen = screenInfo.screens[dmxScreen->index]; |
| 171 | *x = globalX - dmxScreen->rootXOrigin; |
| 172 | *y = globalY - dmxScreen->rootYOrigin; |
| 173 | return TRUE; |
| 174 | } |
| 175 | } |
| 176 | return FALSE; |
| 177 | } |
| 178 | |
| 179 | static void |
| 180 | dmxCrossScreen(ScreenPtr pScreen, Bool entering) |
| 181 | { |
| 182 | } |
| 183 | |
| 184 | static void |
| 185 | dmxWarpCursor(DeviceIntPtr pDev, ScreenPtr pScreen, int x, int y) |
| 186 | { |
| 187 | DMXDBG3("dmxWarpCursor(%d,%d,%d)\n", pScreen->myNum, x, y); |
| 188 | #if 11 /*BP*/ |
| 189 | /* This call is depracated. Replace with???? */ |
| 190 | miPointerWarpCursor(pDev, pScreen, x, y); |
| 191 | #else |
| 192 | pScreen->SetCursorPosition(pDev, pScreen, x, y, FALSE); |
| 193 | #endif |
| 194 | } |
| 195 | |
| 196 | miPointerScreenFuncRec dmxPointerCursorFuncs = { |
| 197 | dmxCursorOffScreen, |
| 198 | dmxCrossScreen, |
| 199 | dmxWarpCursor, |
| 200 | }; |
| 201 | |
| 202 | /** Create a list of screens that we'll manipulate. */ |
| 203 | static int * |
| 204 | dmxSLCreate(void) |
| 205 | { |
| 206 | int *list = malloc(dmxNumScreens * sizeof(*list)); |
| 207 | int i; |
| 208 | |
| 209 | for (i = 0; i < dmxNumScreens; i++) |
| 210 | list[i] = 1; |
| 211 | return list; |
| 212 | } |
| 213 | |
| 214 | /** Free list. */ |
| 215 | static void |
| 216 | dmxSLFree(int *list) |
| 217 | { |
| 218 | free(list); |
| 219 | } |
| 220 | |
| 221 | /** Find next uninitialized entry in list. */ |
| 222 | static int |
| 223 | dmxSLFindNext(int *list) |
| 224 | { |
| 225 | int i; |
| 226 | |
| 227 | for (i = 0; i < dmxNumScreens; i++) |
| 228 | if (list[i]) |
| 229 | return i; |
| 230 | return -1; |
| 231 | } |
| 232 | |
| 233 | /** Make one pass over all the screens and return the number updated. */ |
| 234 | static int |
| 235 | dmxTryComputeScreenOrigins(int *screensLeft) |
| 236 | { |
| 237 | ScreenPtr pScreen, refScreen; |
| 238 | DMXScreenInfo *screen; |
| 239 | int i, ref; |
| 240 | int changed = 0; |
| 241 | |
| 242 | for (i = 0; i < dmxNumScreens; i++) { |
| 243 | if (!screensLeft[i]) |
| 244 | continue; |
| 245 | screen = &dmxScreens[i]; |
| 246 | pScreen = screenInfo.screens[i]; |
| 247 | switch (screen->where) { |
| 248 | case PosAbsolute: |
| 249 | pScreen->x = screen->whereX; |
| 250 | pScreen->y = screen->whereY; |
| 251 | ++changed, screensLeft[i] = 0; |
| 252 | break; |
| 253 | case PosRelative: |
| 254 | ref = screen->whereRefScreen; |
| 255 | if (screensLeft[ref]) |
| 256 | break; |
| 257 | refScreen = screenInfo.screens[ref]; |
| 258 | pScreen->x = refScreen->x + screen->whereX; |
| 259 | pScreen->y = refScreen->y + screen->whereY; |
| 260 | ++changed, screensLeft[i] = 0; |
| 261 | break; |
| 262 | case PosRightOf: |
| 263 | ref = screen->whereRefScreen; |
| 264 | if (screensLeft[ref]) |
| 265 | break; |
| 266 | refScreen = screenInfo.screens[ref]; |
| 267 | pScreen->x = refScreen->x + refScreen->width; |
| 268 | pScreen->y = refScreen->y; |
| 269 | ++changed, screensLeft[i] = 0; |
| 270 | break; |
| 271 | case PosLeftOf: |
| 272 | ref = screen->whereRefScreen; |
| 273 | if (screensLeft[ref]) |
| 274 | break; |
| 275 | refScreen = screenInfo.screens[ref]; |
| 276 | pScreen->x = refScreen->x - pScreen->width; |
| 277 | pScreen->y = refScreen->y; |
| 278 | ++changed, screensLeft[i] = 0; |
| 279 | break; |
| 280 | case PosBelow: |
| 281 | ref = screen->whereRefScreen; |
| 282 | if (screensLeft[ref]) |
| 283 | break; |
| 284 | refScreen = screenInfo.screens[ref]; |
| 285 | pScreen->x = refScreen->x; |
| 286 | pScreen->y = refScreen->y + refScreen->height; |
| 287 | ++changed, screensLeft[i] = 0; |
| 288 | break; |
| 289 | case PosAbove: |
| 290 | ref = screen->whereRefScreen; |
| 291 | if (screensLeft[ref]) |
| 292 | break; |
| 293 | refScreen = screenInfo.screens[ref]; |
| 294 | pScreen->x = refScreen->x; |
| 295 | pScreen->y = refScreen->y - pScreen->height; |
| 296 | ++changed, screensLeft[i] = 0; |
| 297 | break; |
| 298 | case PosNone: |
| 299 | dmxLog(dmxFatal, "No position information for screen %d\n", i); |
| 300 | } |
| 301 | } |
| 302 | return changed; |
| 303 | } |
| 304 | |
| 305 | static void |
| 306 | dmxComputeScreenOrigins(void) |
| 307 | { |
| 308 | ScreenPtr pScreen; |
| 309 | int *screensLeft; |
| 310 | int i, ref; |
| 311 | int minX, minY; |
| 312 | |
| 313 | /* Compute origins based on |
| 314 | * configuration information. */ |
| 315 | screensLeft = dmxSLCreate(); |
| 316 | while ((i = dmxSLFindNext(screensLeft)) >= 0) { |
| 317 | while (dmxTryComputeScreenOrigins(screensLeft)); |
| 318 | if ((i = dmxSLFindNext(screensLeft)) >= 0) { |
| 319 | /* All of the remaining screens are referencing each other. |
| 320 | * Assign a value to one of them and go through again. This |
| 321 | * guarantees that we will eventually terminate. |
| 322 | */ |
| 323 | ref = dmxScreens[i].whereRefScreen; |
| 324 | pScreen = screenInfo.screens[ref]; |
| 325 | pScreen->x = pScreen->y = 0; |
| 326 | screensLeft[ref] = 0; |
| 327 | } |
| 328 | } |
| 329 | dmxSLFree(screensLeft); |
| 330 | |
| 331 | /* Justify the topmost and leftmost to |
| 332 | * (0,0). */ |
| 333 | minX = screenInfo.screens[0]->x; |
| 334 | minY = screenInfo.screens[0]->y; |
| 335 | for (i = 1; i < dmxNumScreens; i++) { /* Compute minX, minY */ |
| 336 | if (screenInfo.screens[i]->x < minX) |
| 337 | minX = screenInfo.screens[i]->x; |
| 338 | if (screenInfo.screens[i]->y < minY) |
| 339 | minY = screenInfo.screens[i]->y; |
| 340 | } |
| 341 | if (minX || minY) { |
| 342 | for (i = 0; i < dmxNumScreens; i++) { |
| 343 | screenInfo.screens[i]->x -= minX; |
| 344 | screenInfo.screens[i]->y -= minY; |
| 345 | } |
| 346 | } |
| 347 | |
| 348 | update_desktop_dimensions(); |
| 349 | } |
| 350 | |
| 351 | /** Recompute origin information in the #dmxScreens list. This is |
| 352 | * called from #dmxInitOrigins. */ |
| 353 | void |
| 354 | dmxReInitOrigins(void) |
| 355 | { |
| 356 | int i; |
| 357 | |
| 358 | if (dmxNumScreens > MAXSCREENS) |
| 359 | dmxLog(dmxFatal, "dmxNumScreens = %d > MAXSCREENS = %d\n", |
| 360 | dmxNumScreens, MAXSCREENS); |
| 361 | |
| 362 | for (i = 0; i < dmxNumScreens; i++) { |
| 363 | DMXScreenInfo *dmxScreen = &dmxScreens[i]; |
| 364 | |
| 365 | dmxLogOutput(dmxScreen, |
| 366 | "s=%dx%d%+d%+d r=%dx%d%+d%+d @%d,%d" |
| 367 | " (be=%dx%d depth=%d bpp=%d)\n", |
| 368 | dmxScreen->scrnWidth, dmxScreen->scrnHeight, |
| 369 | dmxScreen->scrnX, dmxScreen->scrnY, |
| 370 | dmxScreen->rootWidth, dmxScreen->rootHeight, |
| 371 | dmxScreen->rootX, dmxScreen->rootY, |
| 372 | dmxScreen->rootXOrigin, dmxScreen->rootYOrigin, |
| 373 | dmxScreen->beWidth, dmxScreen->beHeight, |
| 374 | dmxScreen->beDepth, dmxScreen->beBPP); |
| 375 | } |
| 376 | } |
| 377 | |
| 378 | /** Initialize screen origins (and relative position). This is called |
| 379 | * for each server generation. For dynamic reconfiguration, use |
| 380 | * #dmxReInitOrigins() instead. */ |
| 381 | void |
| 382 | dmxInitOrigins(void) |
| 383 | { |
| 384 | int i; |
| 385 | |
| 386 | if (dmxNumScreens > MAXSCREENS) |
| 387 | dmxLog(dmxFatal, "dmxNumScreens = %d > MAXSCREENS = %d\n", |
| 388 | dmxNumScreens, MAXSCREENS); |
| 389 | |
| 390 | for (i = 0; i < dmxNumScreens; i++) { |
| 391 | DMXScreenInfo *dmxScreen = &dmxScreens[i]; |
| 392 | |
| 393 | dmxLogOutput(dmxScreen, |
| 394 | "(request) s=%dx%d%+d%+d r=%dx%d%+d%+d @%d,%d (%d)" |
| 395 | " (be=%dx%d depth=%d bpp=%d)\n", |
| 396 | dmxScreen->scrnWidth, dmxScreen->scrnHeight, |
| 397 | dmxScreen->scrnX, dmxScreen->scrnY, |
| 398 | dmxScreen->rootWidth, dmxScreen->rootHeight, |
| 399 | dmxScreen->rootX, dmxScreen->rootY, |
| 400 | dmxScreen->whereX, dmxScreen->whereY, |
| 401 | dmxScreen->where, |
| 402 | dmxScreen->beWidth, dmxScreen->beHeight, |
| 403 | dmxScreen->beDepth, dmxScreen->beBPP); |
| 404 | } |
| 405 | |
| 406 | dmxComputeScreenOrigins(); |
| 407 | |
| 408 | for (i = 0; i < dmxNumScreens; i++) { |
| 409 | DMXScreenInfo *dmxScreen = &dmxScreens[i]; |
| 410 | |
| 411 | dmxScreen->rootXOrigin = screenInfo.screens[i]->x; |
| 412 | dmxScreen->rootYOrigin = screenInfo.screens[i]->y; |
| 413 | } |
| 414 | |
| 415 | dmxReInitOrigins(); |
| 416 | } |
| 417 | |
| 418 | /** Returns non-zero if the global \a x, \a y coordinate is on the |
| 419 | * screen window of the \a dmxScreen. */ |
| 420 | int |
| 421 | dmxOnScreen(int x, int y, DMXScreenInfo * dmxScreen) |
| 422 | { |
| 423 | #if DMX_CURSOR_DEBUG > 1 |
| 424 | dmxLog(dmxDebug, |
| 425 | "dmxOnScreen %d %d,%d (r=%dx%d%+d%+d@%d,%d s=%dx%d%+d%+d)\n", |
| 426 | dmxScreen->index, x, y, |
| 427 | dmxScreen->rootWidth, dmxScreen->rootHeight, |
| 428 | dmxScreen->rootX, dmxScreen->rootY, |
| 429 | dmxScreen->rootXOrigin, dmxScreen->rootYOrigin, |
| 430 | dmxScreen->scrnWidth, dmxScreen->scrnHeight, |
| 431 | dmxScreen->scrnX, dmxScreen->scrnY); |
| 432 | #endif |
| 433 | if (x >= dmxScreen->rootXOrigin |
| 434 | && x < dmxScreen->rootXOrigin + dmxScreen->rootWidth |
| 435 | && y >= dmxScreen->rootYOrigin |
| 436 | && y < dmxScreen->rootYOrigin + dmxScreen->rootHeight) |
| 437 | return 1; |
| 438 | return 0; |
| 439 | } |
| 440 | |
| 441 | /** Returns non-zero if \a a overlaps \a b. */ |
| 442 | static int |
| 443 | dmxDoesOverlap(DMXScreenInfo * a, DMXScreenInfo * b) |
| 444 | { |
| 445 | if (dmxOnScreen(a->rootXOrigin, a->rootYOrigin, b)) |
| 446 | return 1; |
| 447 | |
| 448 | if (dmxOnScreen(a->rootXOrigin, a->rootYOrigin + a->scrnWidth, b)) |
| 449 | return 1; |
| 450 | |
| 451 | if (dmxOnScreen(a->rootXOrigin + a->scrnHeight, a->rootYOrigin, b)) |
| 452 | return 1; |
| 453 | |
| 454 | if (dmxOnScreen(a->rootXOrigin + a->scrnHeight, |
| 455 | a->rootYOrigin + a->scrnWidth, b)) |
| 456 | return 1; |
| 457 | |
| 458 | if (dmxOnScreen(b->rootXOrigin, b->rootYOrigin, a)) |
| 459 | return 1; |
| 460 | |
| 461 | if (dmxOnScreen(b->rootXOrigin, b->rootYOrigin + b->scrnWidth, a)) |
| 462 | return 1; |
| 463 | |
| 464 | if (dmxOnScreen(b->rootXOrigin + b->scrnHeight, b->rootYOrigin, a)) |
| 465 | return 1; |
| 466 | |
| 467 | if (dmxOnScreen(b->rootXOrigin + b->scrnHeight, |
| 468 | b->rootYOrigin + b->scrnWidth, a)) |
| 469 | return 1; |
| 470 | |
| 471 | return 0; |
| 472 | } |
| 473 | |
| 474 | /** Used with \a dmxInterateOverlap to print out a list of screens which |
| 475 | * overlap each other. */ |
| 476 | static void * |
| 477 | dmxPrintOverlap(DMXScreenInfo * dmxScreen, void *closure) |
| 478 | { |
| 479 | DMXScreenInfo *a = closure; |
| 480 | |
| 481 | if (dmxScreen != a) { |
| 482 | if (dmxScreen->cursorNotShared) |
| 483 | dmxLogOutputCont(a, " [%d/%s]", dmxScreen->index, dmxScreen->name); |
| 484 | else |
| 485 | dmxLogOutputCont(a, " %d/%s", dmxScreen->index, dmxScreen->name); |
| 486 | } |
| 487 | return NULL; |
| 488 | } |
| 489 | |
| 490 | /** Iterate over the screens which overlap with the \a start screen, |
| 491 | * calling \a f with the \a closure for each argument. Often used with |
| 492 | * #dmxPrintOverlap. */ |
| 493 | static void * |
| 494 | dmxIterateOverlap(DMXScreenInfo * start, |
| 495 | void *(*f) (DMXScreenInfo * dmxScreen, void *), void *closure) |
| 496 | { |
| 497 | DMXScreenInfo *pt; |
| 498 | |
| 499 | if (!start->over) |
| 500 | return f(start, closure); |
| 501 | |
| 502 | for (pt = start->over; /* condition at end of loop */ ; pt = pt->over) { |
| 503 | void *retval; |
| 504 | |
| 505 | if ((retval = f(pt, closure))) |
| 506 | return retval; |
| 507 | if (pt == start) |
| 508 | break; |
| 509 | } |
| 510 | return NULL; |
| 511 | } |
| 512 | |
| 513 | /** Used with #dmxPropertyIterate to determine if screen \a a is the |
| 514 | * same as the screen \a closure. */ |
| 515 | static void * |
| 516 | dmxTestSameDisplay(DMXScreenInfo * a, void *closure) |
| 517 | { |
| 518 | DMXScreenInfo *b = closure; |
| 519 | |
| 520 | if (a == b) |
| 521 | return a; |
| 522 | return NULL; |
| 523 | } |
| 524 | |
| 525 | /** Detects overlapping dmxScreens and creates circular lists. This |
| 526 | * uses an O(dmxNumScreens^2) algorithm, but dmxNumScreens is < 100 and |
| 527 | * the computation only needs to be performed for every server |
| 528 | * generation or dynamic reconfiguration . */ |
| 529 | void |
| 530 | dmxInitOverlap(void) |
| 531 | { |
| 532 | int i, j; |
| 533 | DMXScreenInfo *a, *b, *pt; |
| 534 | |
| 535 | for (i = 0; i < dmxNumScreens; i++) |
| 536 | dmxScreens[i].over = NULL; |
| 537 | |
| 538 | for (i = 0; i < dmxNumScreens; i++) { |
| 539 | a = &dmxScreens[i]; |
| 540 | |
| 541 | for (j = i + 1; j < dmxNumScreens; j++) { |
| 542 | b = &dmxScreens[j]; |
| 543 | if (b->over) |
| 544 | continue; |
| 545 | |
| 546 | if (dmxDoesOverlap(a, b)) { |
| 547 | DMXDBG6("%d overlaps %d: a=%p %p b=%p %p\n", |
| 548 | a->index, b->index, a, a->over, b, b->over); |
| 549 | b->over = (a->over ? a->over : a); |
| 550 | a->over = b; |
| 551 | } |
| 552 | } |
| 553 | } |
| 554 | |
| 555 | for (i = 0; i < dmxNumScreens; i++) { |
| 556 | a = &dmxScreens[i]; |
| 557 | |
| 558 | if (!a->over) |
| 559 | continue; |
| 560 | |
| 561 | /* Flag all pairs that are on same display */ |
| 562 | for (pt = a->over; pt != a; pt = pt->over) { |
| 563 | if (dmxPropertyIterate(a, dmxTestSameDisplay, pt)) { |
| 564 | /* The ->over sets contain the transitive set of screens |
| 565 | * that overlap. For screens that are on the same |
| 566 | * backend display, we only want to exclude pairs of |
| 567 | * screens that mutually overlap on the backend display, |
| 568 | * so we call dmxDoesOverlap, which is stricter than the |
| 569 | * ->over set. */ |
| 570 | if (!dmxDoesOverlap(a, pt)) |
| 571 | continue; |
| 572 | a->cursorNotShared = 1; |
| 573 | pt->cursorNotShared = 1; |
| 574 | dmxLog(dmxInfo, |
| 575 | "Screen %d and %d overlap on %s\n", |
| 576 | a->index, pt->index, a->name); |
| 577 | } |
| 578 | } |
| 579 | } |
| 580 | |
| 581 | for (i = 0; i < dmxNumScreens; i++) { |
| 582 | a = &dmxScreens[i]; |
| 583 | |
| 584 | if (a->over) { |
| 585 | dmxLogOutput(a, "Overlaps"); |
| 586 | dmxIterateOverlap(a, dmxPrintOverlap, a); |
| 587 | dmxLogOutputCont(a, "\n"); |
| 588 | } |
| 589 | } |
| 590 | } |
| 591 | |
| 592 | /** Create \a pCursor on the back-end associated with \a pScreen. */ |
| 593 | void |
| 594 | dmxBECreateCursor(ScreenPtr pScreen, CursorPtr pCursor) |
| 595 | { |
| 596 | DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum]; |
| 597 | dmxCursorPrivPtr pCursorPriv = DMX_GET_CURSOR_PRIV(pCursor, pScreen); |
| 598 | CursorBitsPtr pBits = pCursor->bits; |
| 599 | Pixmap src, msk; |
| 600 | XColor fg, bg; |
| 601 | XImage *img; |
| 602 | XlibGC gc = NULL; |
| 603 | XGCValues v; |
| 604 | unsigned long m; |
| 605 | int i; |
| 606 | |
| 607 | if (!pCursorPriv) |
| 608 | return; |
| 609 | |
| 610 | m = GCFunction | GCPlaneMask | GCForeground | GCBackground | GCClipMask; |
| 611 | v.function = GXcopy; |
| 612 | v.plane_mask = AllPlanes; |
| 613 | v.foreground = 1L; |
| 614 | v.background = 0L; |
| 615 | v.clip_mask = None; |
| 616 | |
| 617 | for (i = 0; i < dmxScreen->beNumPixmapFormats; i++) { |
| 618 | if (dmxScreen->bePixmapFormats[i].depth == 1) { |
| 619 | /* Create GC in the back-end servers */ |
| 620 | gc = XCreateGC(dmxScreen->beDisplay, dmxScreen->scrnDefDrawables[i], |
| 621 | m, &v); |
| 622 | break; |
| 623 | } |
| 624 | } |
| 625 | if (!gc) |
| 626 | dmxLog(dmxFatal, "dmxRealizeCursor: gc not initialized\n"); |
| 627 | |
| 628 | src = XCreatePixmap(dmxScreen->beDisplay, dmxScreen->scrnWin, |
| 629 | pBits->width, pBits->height, 1); |
| 630 | msk = XCreatePixmap(dmxScreen->beDisplay, dmxScreen->scrnWin, |
| 631 | pBits->width, pBits->height, 1); |
| 632 | |
| 633 | img = XCreateImage(dmxScreen->beDisplay, |
| 634 | dmxScreen->beVisuals[dmxScreen->beDefVisualIndex].visual, |
| 635 | 1, XYBitmap, 0, (char *) pBits->source, |
| 636 | pBits->width, pBits->height, |
| 637 | BitmapPad(dmxScreen->beDisplay), 0); |
| 638 | |
| 639 | XPutImage(dmxScreen->beDisplay, src, gc, img, 0, 0, 0, 0, |
| 640 | pBits->width, pBits->height); |
| 641 | |
| 642 | XFree(img); |
| 643 | |
| 644 | img = XCreateImage(dmxScreen->beDisplay, |
| 645 | dmxScreen->beVisuals[dmxScreen->beDefVisualIndex].visual, |
| 646 | 1, XYBitmap, 0, (char *) pBits->mask, |
| 647 | pBits->width, pBits->height, |
| 648 | BitmapPad(dmxScreen->beDisplay), 0); |
| 649 | |
| 650 | XPutImage(dmxScreen->beDisplay, msk, gc, img, 0, 0, 0, 0, |
| 651 | pBits->width, pBits->height); |
| 652 | |
| 653 | XFree(img); |
| 654 | |
| 655 | fg.red = pCursor->foreRed; |
| 656 | fg.green = pCursor->foreGreen; |
| 657 | fg.blue = pCursor->foreBlue; |
| 658 | |
| 659 | bg.red = pCursor->backRed; |
| 660 | bg.green = pCursor->backGreen; |
| 661 | bg.blue = pCursor->backBlue; |
| 662 | |
| 663 | pCursorPriv->cursor = XCreatePixmapCursor(dmxScreen->beDisplay, |
| 664 | src, msk, |
| 665 | &fg, &bg, |
| 666 | pBits->xhot, pBits->yhot); |
| 667 | |
| 668 | XFreePixmap(dmxScreen->beDisplay, src); |
| 669 | XFreePixmap(dmxScreen->beDisplay, msk); |
| 670 | XFreeGC(dmxScreen->beDisplay, gc); |
| 671 | |
| 672 | dmxSync(dmxScreen, FALSE); |
| 673 | } |
| 674 | |
| 675 | static Bool |
| 676 | _dmxRealizeCursor(ScreenPtr pScreen, CursorPtr pCursor) |
| 677 | { |
| 678 | DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum]; |
| 679 | dmxCursorPrivPtr pCursorPriv; |
| 680 | |
| 681 | DMXDBG2("_dmxRealizeCursor(%d,%p)\n", pScreen->myNum, pCursor); |
| 682 | |
| 683 | DMX_SET_CURSOR_PRIV(pCursor, pScreen, malloc(sizeof(*pCursorPriv))); |
| 684 | if (!DMX_GET_CURSOR_PRIV(pCursor, pScreen)) |
| 685 | return FALSE; |
| 686 | |
| 687 | pCursorPriv = DMX_GET_CURSOR_PRIV(pCursor, pScreen); |
| 688 | pCursorPriv->cursor = (Cursor) 0; |
| 689 | |
| 690 | if (!dmxScreen->beDisplay) |
| 691 | return TRUE; |
| 692 | |
| 693 | dmxBECreateCursor(pScreen, pCursor); |
| 694 | return TRUE; |
| 695 | } |
| 696 | |
| 697 | /** Free \a pCursor on the back-end associated with \a pScreen. */ |
| 698 | Bool |
| 699 | dmxBEFreeCursor(ScreenPtr pScreen, CursorPtr pCursor) |
| 700 | { |
| 701 | DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum]; |
| 702 | dmxCursorPrivPtr pCursorPriv = DMX_GET_CURSOR_PRIV(pCursor, pScreen); |
| 703 | |
| 704 | if (pCursorPriv) { |
| 705 | XFreeCursor(dmxScreen->beDisplay, pCursorPriv->cursor); |
| 706 | pCursorPriv->cursor = (Cursor) 0; |
| 707 | return TRUE; |
| 708 | } |
| 709 | |
| 710 | return FALSE; |
| 711 | } |
| 712 | |
| 713 | static Bool |
| 714 | _dmxUnrealizeCursor(ScreenPtr pScreen, CursorPtr pCursor) |
| 715 | { |
| 716 | DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum]; |
| 717 | |
| 718 | DMXDBG2("_dmxUnrealizeCursor(%d,%p)\n", pScreen->myNum, pCursor); |
| 719 | |
| 720 | if (dmxScreen->beDisplay) { |
| 721 | if (dmxBEFreeCursor(pScreen, pCursor)) |
| 722 | free(DMX_GET_CURSOR_PRIV(pCursor, pScreen)); |
| 723 | } |
| 724 | DMX_SET_CURSOR_PRIV(pCursor, pScreen, NULL); |
| 725 | |
| 726 | return TRUE; |
| 727 | } |
| 728 | |
| 729 | static void |
| 730 | _dmxMoveCursor(ScreenPtr pScreen, int x, int y) |
| 731 | { |
| 732 | DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum]; |
| 733 | int newX = x + dmxScreen->rootX; |
| 734 | int newY = y + dmxScreen->rootY; |
| 735 | |
| 736 | if (newX < 0) |
| 737 | newX = 0; |
| 738 | if (newY < 0) |
| 739 | newY = 0; |
| 740 | |
| 741 | DMXDBG5("_dmxMoveCursor(%d,%d,%d) -> %d,%d\n", |
| 742 | pScreen->myNum, x, y, newX, newY); |
| 743 | if (dmxScreen->beDisplay) { |
| 744 | XWarpPointer(dmxScreen->beDisplay, None, dmxScreen->scrnWin, |
| 745 | 0, 0, 0, 0, newX, newY); |
| 746 | dmxSync(dmxScreen, TRUE); |
| 747 | } |
| 748 | } |
| 749 | |
| 750 | static void |
| 751 | _dmxSetCursor(ScreenPtr pScreen, CursorPtr pCursor, int x, int y) |
| 752 | { |
| 753 | DMXScreenInfo *dmxScreen = &dmxScreens[pScreen->myNum]; |
| 754 | |
| 755 | DMXDBG4("_dmxSetCursor(%d,%p,%d,%d)\n", pScreen->myNum, pCursor, x, y); |
| 756 | |
| 757 | if (pCursor) { |
| 758 | dmxCursorPrivPtr pCursorPriv = DMX_GET_CURSOR_PRIV(pCursor, pScreen); |
| 759 | |
| 760 | if (pCursorPriv && dmxScreen->curCursor != pCursorPriv->cursor) { |
| 761 | if (dmxScreen->beDisplay) |
| 762 | XDefineCursor(dmxScreen->beDisplay, dmxScreen->scrnWin, |
| 763 | pCursorPriv->cursor); |
| 764 | dmxScreen->cursor = pCursor; |
| 765 | dmxScreen->curCursor = pCursorPriv->cursor; |
| 766 | dmxScreen->cursorVisible = 1; |
| 767 | } |
| 768 | _dmxMoveCursor(pScreen, x, y); |
| 769 | } |
| 770 | else { |
| 771 | if (dmxScreen->beDisplay) |
| 772 | XDefineCursor(dmxScreen->beDisplay, dmxScreen->scrnWin, |
| 773 | dmxScreen->noCursor); |
| 774 | dmxScreen->cursor = NULL; |
| 775 | dmxScreen->curCursor = (Cursor) 0; |
| 776 | dmxScreen->cursorVisible = 0; |
| 777 | } |
| 778 | if (dmxScreen->beDisplay) |
| 779 | dmxSync(dmxScreen, TRUE); |
| 780 | } |
| 781 | |
| 782 | static Bool |
| 783 | dmxRealizeCursor(DeviceIntPtr pDev, ScreenPtr pScreen, CursorPtr pCursor) |
| 784 | { |
| 785 | DMXScreenInfo *start = &dmxScreens[pScreen->myNum]; |
| 786 | DMXScreenInfo *pt; |
| 787 | |
| 788 | if (!start->over || !dmxCursorDoMultiCursors || start->cursorNotShared) |
| 789 | return _dmxRealizeCursor(pScreen, pCursor); |
| 790 | |
| 791 | for (pt = start->over; /* condition at end of loop */ ; pt = pt->over) { |
| 792 | if (pt->cursorNotShared) |
| 793 | continue; |
| 794 | _dmxRealizeCursor(screenInfo.screens[pt->index], pCursor); |
| 795 | if (pt == start) |
| 796 | break; |
| 797 | } |
| 798 | return TRUE; |
| 799 | } |
| 800 | |
| 801 | static Bool |
| 802 | dmxUnrealizeCursor(DeviceIntPtr pDev, ScreenPtr pScreen, CursorPtr pCursor) |
| 803 | { |
| 804 | DMXScreenInfo *start = &dmxScreens[pScreen->myNum]; |
| 805 | DMXScreenInfo *pt; |
| 806 | |
| 807 | if (!start->over || !dmxCursorDoMultiCursors || start->cursorNotShared) |
| 808 | return _dmxUnrealizeCursor(pScreen, pCursor); |
| 809 | |
| 810 | for (pt = start->over; /* condition at end of loop */ ; pt = pt->over) { |
| 811 | if (pt->cursorNotShared) |
| 812 | continue; |
| 813 | _dmxUnrealizeCursor(screenInfo.screens[pt->index], pCursor); |
| 814 | if (pt == start) |
| 815 | break; |
| 816 | } |
| 817 | return TRUE; |
| 818 | } |
| 819 | |
| 820 | static CursorPtr |
| 821 | dmxFindCursor(DMXScreenInfo * start) |
| 822 | { |
| 823 | DMXScreenInfo *pt; |
| 824 | |
| 825 | if (!start || !start->over) |
| 826 | return GetSpriteCursor(inputInfo.pointer); |
| 827 | for (pt = start->over; /* condition at end of loop */ ; pt = pt->over) { |
| 828 | if (pt->cursor) |
| 829 | return pt->cursor; |
| 830 | if (pt == start) |
| 831 | break; |
| 832 | } |
| 833 | return GetSpriteCursor(inputInfo.pointer); |
| 834 | } |
| 835 | |
| 836 | /** Move the cursor to coordinates (\a x, \a y)on \a pScreen. This |
| 837 | * function is usually called via #dmxPointerSpriteFuncs, except during |
| 838 | * reconfiguration when the cursor is repositioned to force an update on |
| 839 | * newley overlapping screens and on screens that no longer overlap. |
| 840 | * |
| 841 | * The coords (x,y) are in global coord space. We'll loop over the |
| 842 | * back-end screens and see if they contain the global coord. If so, call |
| 843 | * _dmxMoveCursor() (XWarpPointer) to position the pointer on that screen. |
| 844 | */ |
| 845 | void |
| 846 | dmxMoveCursor(DeviceIntPtr pDev, ScreenPtr pScreen, int x, int y) |
| 847 | { |
| 848 | DMXScreenInfo *start = &dmxScreens[pScreen->myNum]; |
| 849 | DMXScreenInfo *pt; |
| 850 | |
| 851 | DMXDBG3("dmxMoveCursor(%d,%d,%d)\n", pScreen->myNum, x, y); |
| 852 | |
| 853 | if (!start->over || !dmxCursorDoMultiCursors || start->cursorNotShared) { |
| 854 | _dmxMoveCursor(pScreen, x, y); |
| 855 | return; |
| 856 | } |
| 857 | |
| 858 | for (pt = start->over; /* condition at end of loop */ ; pt = pt->over) { |
| 859 | if (pt->cursorNotShared) |
| 860 | continue; |
| 861 | if (dmxOnScreen(x + start->rootXOrigin, y + start->rootYOrigin, pt)) { |
| 862 | if ( /* pt != start && */ !pt->cursorVisible) { |
| 863 | if (!pt->cursor) { |
| 864 | /* This only happens during |
| 865 | * reconfiguration when a new overlap |
| 866 | * occurs. */ |
| 867 | CursorPtr pCursor; |
| 868 | |
| 869 | if ((pCursor = dmxFindCursor(start))) |
| 870 | _dmxRealizeCursor(screenInfo.screens[pt->index], |
| 871 | pt->cursor = pCursor); |
| 872 | |
| 873 | } |
| 874 | _dmxSetCursor(screenInfo.screens[pt->index], |
| 875 | pt->cursor, |
| 876 | x + start->rootXOrigin - pt->rootXOrigin, |
| 877 | y + start->rootYOrigin - pt->rootYOrigin); |
| 878 | } |
| 879 | _dmxMoveCursor(screenInfo.screens[pt->index], |
| 880 | x + start->rootXOrigin - pt->rootXOrigin, |
| 881 | y + start->rootYOrigin - pt->rootYOrigin); |
| 882 | } |
| 883 | else if ( /* pt != start && */ pt->cursorVisible) { |
| 884 | _dmxSetCursor(screenInfo.screens[pt->index], |
| 885 | NULL, |
| 886 | x + start->rootXOrigin - pt->rootXOrigin, |
| 887 | y + start->rootYOrigin - pt->rootYOrigin); |
| 888 | } |
| 889 | if (pt == start) |
| 890 | break; |
| 891 | } |
| 892 | } |
| 893 | |
| 894 | static void |
| 895 | dmxSetCursor(DeviceIntPtr pDev, ScreenPtr pScreen, CursorPtr pCursor, int x, |
| 896 | int y) |
| 897 | { |
| 898 | DMXScreenInfo *start = &dmxScreens[pScreen->myNum]; |
| 899 | DMXScreenInfo *pt; |
| 900 | int GX, GY, gx, gy; |
| 901 | |
| 902 | DMXDBG5("dmxSetCursor(%d %p, %p,%d,%d)\n", |
| 903 | pScreen->myNum, start, pCursor, x, y); |
| 904 | |
| 905 | /* We do this check here because of two cases: |
| 906 | * |
| 907 | * 1) if a client calls XWarpPointer() |
| 908 | * and Xinerama is not running, we can |
| 909 | * have mi's notion of the pointer |
| 910 | * position out of phase with DMX's |
| 911 | * notion. |
| 912 | * |
| 913 | * 2) if a down button is held while the |
| 914 | * cursor moves outside the root window, |
| 915 | * mi's notion of the pointer position |
| 916 | * is out of phase with DMX's notion and |
| 917 | * the cursor can remain visible when it |
| 918 | * shouldn't be. */ |
| 919 | |
| 920 | dmxGetGlobalPosition(&GX, &GY); |
| 921 | gx = start->rootXOrigin + x; |
| 922 | gy = start->rootYOrigin + y; |
| 923 | if (x && y && (GX != gx || GY != gy)) |
| 924 | dmxCoreMotion(NULL, gx, gy, 0, DMX_NO_BLOCK); |
| 925 | |
| 926 | if (!start->over || !dmxCursorDoMultiCursors || start->cursorNotShared) { |
| 927 | _dmxSetCursor(pScreen, pCursor, x, y); |
| 928 | return; |
| 929 | } |
| 930 | |
| 931 | for (pt = start->over; /* condition at end of loop */ ; pt = pt->over) { |
| 932 | if (pt->cursorNotShared) |
| 933 | continue; |
| 934 | if (dmxOnScreen(x + start->rootXOrigin, y + start->rootYOrigin, pt)) { |
| 935 | _dmxSetCursor(screenInfo.screens[pt->index], pCursor, |
| 936 | x + start->rootXOrigin - pt->rootXOrigin, |
| 937 | y + start->rootYOrigin - pt->rootYOrigin); |
| 938 | } |
| 939 | else { |
| 940 | _dmxSetCursor(screenInfo.screens[pt->index], NULL, |
| 941 | x + start->rootXOrigin - pt->rootXOrigin, |
| 942 | y + start->rootYOrigin - pt->rootYOrigin); |
| 943 | } |
| 944 | if (pt == start) |
| 945 | break; |
| 946 | } |
| 947 | } |
| 948 | |
| 949 | /** This routine is used by the backend input routines to hide the |
| 950 | * cursor on a screen that is being used for relative input. \see |
| 951 | * dmxbackend.c */ |
| 952 | void |
| 953 | dmxHideCursor(DMXScreenInfo * dmxScreen) |
| 954 | { |
| 955 | int x, y; |
| 956 | ScreenPtr pScreen = screenInfo.screens[dmxScreen->index]; |
| 957 | |
| 958 | dmxGetGlobalPosition(&x, &y); |
| 959 | _dmxSetCursor(pScreen, NULL, x, y); |
| 960 | } |
| 961 | |
| 962 | /** This routine is called during reconfiguration to make sure the |
| 963 | * cursor is visible. */ |
| 964 | void |
| 965 | dmxCheckCursor(void) |
| 966 | { |
| 967 | int i; |
| 968 | int x, y; |
| 969 | ScreenPtr pScreen; |
| 970 | DMXScreenInfo *firstScreen; |
| 971 | |
| 972 | dmxGetGlobalPosition(&x, &y); |
| 973 | firstScreen = dmxFindFirstScreen(x, y); |
| 974 | |
| 975 | DMXDBG2("dmxCheckCursor %d %d\n", x, y); |
| 976 | for (i = 0; i < dmxNumScreens; i++) { |
| 977 | DMXScreenInfo *dmxScreen = &dmxScreens[i]; |
| 978 | |
| 979 | pScreen = screenInfo.screens[dmxScreen->index]; |
| 980 | |
| 981 | if (!dmxOnScreen(x, y, dmxScreen)) { |
| 982 | if (firstScreen && |
| 983 | i == miPointerGetScreen(inputInfo.pointer)->myNum) |
| 984 | miPointerSetScreen(inputInfo.pointer, firstScreen->index, x, |
| 985 | y); |
| 986 | _dmxSetCursor(pScreen, NULL, x - dmxScreen->rootXOrigin, |
| 987 | y - dmxScreen->rootYOrigin); |
| 988 | } |
| 989 | else { |
| 990 | if (!dmxScreen->cursor) { |
| 991 | CursorPtr pCursor; |
| 992 | |
| 993 | if ((pCursor = dmxFindCursor(dmxScreen))) { |
| 994 | _dmxRealizeCursor(pScreen, dmxScreen->cursor = pCursor); |
| 995 | } |
| 996 | } |
| 997 | _dmxSetCursor(pScreen, dmxScreen->cursor, |
| 998 | x - dmxScreen->rootXOrigin, |
| 999 | y - dmxScreen->rootYOrigin); |
| 1000 | } |
| 1001 | } |
| 1002 | DMXDBG2(" leave dmxCheckCursor %d %d\n", x, y); |
| 1003 | } |
| 1004 | |
| 1005 | static Bool |
| 1006 | dmxDeviceCursorInitialize(DeviceIntPtr pDev, ScreenPtr pScr) |
| 1007 | { |
| 1008 | return TRUE; |
| 1009 | } |
| 1010 | |
| 1011 | static void |
| 1012 | dmxDeviceCursorCleanup(DeviceIntPtr pDev, ScreenPtr pScr) |
| 1013 | { |
| 1014 | } |
| 1015 | |
| 1016 | miPointerSpriteFuncRec dmxPointerSpriteFuncs = { |
| 1017 | dmxRealizeCursor, |
| 1018 | dmxUnrealizeCursor, |
| 1019 | dmxSetCursor, |
| 1020 | dmxMoveCursor, |
| 1021 | dmxDeviceCursorInitialize, |
| 1022 | dmxDeviceCursorCleanup |
| 1023 | }; |