| 1 | /* |
| 2 | * Copyright 2001-2003 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 | /** \file |
| 36 | * These routines support taking input from devices on the backend |
| 37 | * (output) displays. \see dmxcommon.c. */ |
| 38 | |
| 39 | #ifdef HAVE_DMX_CONFIG_H |
| 40 | #include <dmx-config.h> |
| 41 | #endif |
| 42 | |
| 43 | #define DMX_BACKEND_DEBUG 0 |
| 44 | |
| 45 | #include "dmxinputinit.h" |
| 46 | #include "dmxbackend.h" |
| 47 | #include "dmxcommon.h" |
| 48 | #include "dmxconsole.h" |
| 49 | #include "dmxcursor.h" |
| 50 | #include "dmxprop.h" |
| 51 | #include "dmxsync.h" |
| 52 | #include "dmxcb.h" /* For dmxGlobalWidth and dmxGlobalHeight */ |
| 53 | #include "dmxevents.h" /* For dmxGetGlobalPosition */ |
| 54 | #include "ChkNotMaskEv.h" |
| 55 | |
| 56 | #include "inputstr.h" |
| 57 | #include "input.h" |
| 58 | #include <X11/keysym.h> |
| 59 | #include "mipointer.h" |
| 60 | #include "scrnintstr.h" |
| 61 | #include "windowstr.h" |
| 62 | |
| 63 | /* Private area for backend devices. */ |
| 64 | typedef struct _myPrivate { |
| 65 | DMX_COMMON_PRIVATE; |
| 66 | int myScreen; |
| 67 | DMXScreenInfo *grabbedScreen; |
| 68 | |
| 69 | int lastX, lastY; |
| 70 | int centerX, centerY; |
| 71 | int relative; |
| 72 | int newscreen; |
| 73 | int initialized; |
| 74 | DevicePtr mou, kbd; |
| 75 | int entered; |
| 76 | int offX, offY; |
| 77 | } myPrivate; |
| 78 | |
| 79 | #if DMX_BACKEND_DEBUG |
| 80 | #define DMXDBG0(f) dmxLog(dmxDebug,f) |
| 81 | #define DMXDBG1(f,a) dmxLog(dmxDebug,f,a) |
| 82 | #define DMXDBG2(f,a,b) dmxLog(dmxDebug,f,a,b) |
| 83 | #define DMXDBG3(f,a,b,c) dmxLog(dmxDebug,f,a,b,c) |
| 84 | #define DMXDBG4(f,a,b,c,d) dmxLog(dmxDebug,f,a,b,c,d) |
| 85 | #define DMXDBG5(f,a,b,c,d,e) dmxLog(dmxDebug,f,a,b,c,d,e) |
| 86 | #define DMXDBG6(f,a,b,c,d,e,g) dmxLog(dmxDebug,f,a,b,c,d,e,g) |
| 87 | #define DMXDBG7(f,a,b,c,d,e,g,h) dmxLog(dmxDebug,f,a,b,c,d,e,g,h) |
| 88 | #define DMXDBG8(f,a,b,c,d,e,g,h,i) dmxLog(dmxDebug,f,a,b,c,d,e,g,h,i) |
| 89 | #define DMXDBG9(f,a,b,c,d,e,g,h,i,j) dmxLog(dmxDebug,f,a,b,c,d,e,g,h,i,j) |
| 90 | #else |
| 91 | #define DMXDBG0(f) |
| 92 | #define DMXDBG1(f,a) |
| 93 | #define DMXDBG2(f,a,b) |
| 94 | #define DMXDBG3(f,a,b,c) |
| 95 | #define DMXDBG4(f,a,b,c,d) |
| 96 | #define DMXDBG5(f,a,b,c,d,e) |
| 97 | #define DMXDBG6(f,a,b,c,d,e,g) |
| 98 | #define DMXDBG7(f,a,b,c,d,e,g,h) |
| 99 | #define DMXDBG8(f,a,b,c,d,e,g,h,i) |
| 100 | #define DMXDBG9(f,a,b,c,d,e,g,h,i,j) |
| 101 | #endif |
| 102 | |
| 103 | /** Create and return a private data structure. */ |
| 104 | pointer |
| 105 | dmxBackendCreatePrivate(DeviceIntPtr pDevice) |
| 106 | { |
| 107 | GETDMXLOCALFROMPDEVICE; |
| 108 | myPrivate *priv = calloc(1, sizeof(*priv)); |
| 109 | |
| 110 | priv->dmxLocal = dmxLocal; |
| 111 | return priv; |
| 112 | } |
| 113 | |
| 114 | /** Destroy the private data structure. No checking is performed to |
| 115 | * verify that the structure was actually created by |
| 116 | * #dmxBackendCreatePrivate. */ |
| 117 | void |
| 118 | dmxBackendDestroyPrivate(pointer private) |
| 119 | { |
| 120 | free(private); |
| 121 | } |
| 122 | |
| 123 | static void * |
| 124 | dmxBackendTestScreen(DMXScreenInfo * dmxScreen, void *closure) |
| 125 | { |
| 126 | long target = (long) closure; |
| 127 | |
| 128 | if (dmxScreen->index == target) |
| 129 | return dmxScreen; |
| 130 | return NULL; |
| 131 | } |
| 132 | |
| 133 | /* Return non-zero if screen and priv->myScreen are on the same physical |
| 134 | * backend display (1 if they are the same screen, 2 if they are |
| 135 | * different screens). Since this is a common operation, the results |
| 136 | * are cached. The cache is invalidated if \a priv is NULL (this should |
| 137 | * be done with each server generation and reconfiguration). */ |
| 138 | static int |
| 139 | dmxBackendSameDisplay(myPrivate * priv, long screen) |
| 140 | { |
| 141 | static myPrivate *oldpriv = NULL; |
| 142 | static int oldscreen = -1; |
| 143 | static int retcode = 0; |
| 144 | |
| 145 | if (priv == oldpriv && screen == oldscreen) |
| 146 | return retcode; |
| 147 | if (!priv) { /* Invalidate cache */ |
| 148 | oldpriv = NULL; |
| 149 | oldscreen = -1; |
| 150 | retcode = 0; |
| 151 | return 0; |
| 152 | } |
| 153 | |
| 154 | if (screen == priv->myScreen) |
| 155 | retcode = 1; |
| 156 | else if (screen < 0 || screen >= dmxNumScreens) |
| 157 | retcode = 0; |
| 158 | else if (dmxPropertyIterate(priv->be, |
| 159 | dmxBackendTestScreen, (void *) screen)) |
| 160 | retcode = 2; |
| 161 | else |
| 162 | retcode = 0; |
| 163 | |
| 164 | oldpriv = priv; |
| 165 | oldscreen = screen; |
| 166 | return retcode; |
| 167 | } |
| 168 | |
| 169 | static void * |
| 170 | dmxBackendTestEvents(DMXScreenInfo * dmxScreen, void *closure) |
| 171 | { |
| 172 | XEvent *X = (XEvent *) closure; |
| 173 | |
| 174 | if (XCheckNotMaskEvent(dmxScreen->beDisplay, ExposureMask, X)) |
| 175 | return dmxScreen; |
| 176 | return NULL; |
| 177 | } |
| 178 | |
| 179 | static void * |
| 180 | dmxBackendTestMotionEvent(DMXScreenInfo * dmxScreen, void *closure) |
| 181 | { |
| 182 | XEvent *X = (XEvent *) closure; |
| 183 | |
| 184 | if (XCheckTypedEvent(dmxScreen->beDisplay, MotionNotify, X)) |
| 185 | return dmxScreen; |
| 186 | return NULL; |
| 187 | } |
| 188 | |
| 189 | static DMXScreenInfo * |
| 190 | dmxBackendGetEvent(myPrivate * priv, XEvent * X) |
| 191 | { |
| 192 | DMXScreenInfo *dmxScreen; |
| 193 | |
| 194 | if ((dmxScreen = dmxPropertyIterate(priv->be, dmxBackendTestEvents, X))) |
| 195 | return dmxScreen; |
| 196 | return NULL; |
| 197 | } |
| 198 | |
| 199 | static DMXScreenInfo * |
| 200 | dmxBackendPendingMotionEvent(myPrivate * priv, int save) |
| 201 | { |
| 202 | DMXScreenInfo *dmxScreen; |
| 203 | XEvent N; |
| 204 | |
| 205 | if ((dmxScreen = dmxPropertyIterate(priv->be, |
| 206 | dmxBackendTestMotionEvent, &N))) { |
| 207 | if (save) |
| 208 | XPutBackEvent(dmxScreen->beDisplay, &N); |
| 209 | return dmxScreen; |
| 210 | } |
| 211 | return NULL; |
| 212 | } |
| 213 | |
| 214 | static void * |
| 215 | dmxBackendTestWindow(DMXScreenInfo * dmxScreen, void *closure) |
| 216 | { |
| 217 | Window win = (Window) (long) closure; |
| 218 | |
| 219 | if (dmxScreen->scrnWin == win) |
| 220 | return dmxScreen; |
| 221 | return NULL; |
| 222 | } |
| 223 | |
| 224 | static DMXScreenInfo * |
| 225 | dmxBackendFindWindow(myPrivate * priv, Window win) |
| 226 | { |
| 227 | return dmxPropertyIterate(priv->be, dmxBackendTestWindow, |
| 228 | (void *) (long) win); |
| 229 | } |
| 230 | |
| 231 | /* If the cursor is over a set of overlapping screens and one of those |
| 232 | * screens takes backend input, then we want that particular screen to |
| 233 | * be current, not one of the other ones. */ |
| 234 | static int |
| 235 | dmxBackendFindOverlapping(myPrivate * priv, int screen, int x, int y) |
| 236 | { |
| 237 | DMXScreenInfo *start = &dmxScreens[screen]; |
| 238 | DMXScreenInfo *pt; |
| 239 | |
| 240 | if (!start->over) |
| 241 | return screen; |
| 242 | |
| 243 | for (pt = start->over; /* condition at end of loop */ ; pt = pt->over) { |
| 244 | if (pt->index == priv->myScreen |
| 245 | && dmxOnScreen(x, y, &dmxScreens[pt->index])) |
| 246 | return pt->index; |
| 247 | if (pt == start) |
| 248 | break; |
| 249 | } |
| 250 | return screen; |
| 251 | } |
| 252 | |
| 253 | /* Return non-zero if \a x and \a y are off \a screen. */ |
| 254 | static int |
| 255 | dmxBackendOffscreen(int screen, int x, int y) |
| 256 | { |
| 257 | DMXScreenInfo *dmxScreen = &dmxScreens[screen]; |
| 258 | |
| 259 | return (!dmxOnScreen(x, y, dmxScreen)); |
| 260 | } |
| 261 | |
| 262 | /** This routine is called from #dmxCoreMotion for each motion |
| 263 | * event. \a x and \a y are global coordinants. */ |
| 264 | void |
| 265 | dmxBackendUpdatePosition(pointer private, int x, int y) |
| 266 | { |
| 267 | GETPRIVFROMPRIVATE; |
| 268 | int screen = miPointerGetScreen(inputInfo.pointer)->myNum; |
| 269 | DMXScreenInfo *dmxScreen = &dmxScreens[priv->myScreen]; |
| 270 | int oldRelative = priv->relative; |
| 271 | int topscreen = dmxBackendFindOverlapping(priv, screen, x, y); |
| 272 | int same = dmxBackendSameDisplay(priv, topscreen); |
| 273 | int offscreen = dmxBackendOffscreen(priv->myScreen, x, y); |
| 274 | int offthis = dmxBackendOffscreen(screen, x, y); |
| 275 | |
| 276 | DMXDBG9("dmxBackendUpdatePosition(%d,%d) my=%d mi=%d rel=%d" |
| 277 | " topscreen=%d same=%d offscreen=%d offthis=%d\n", |
| 278 | x, y, priv->myScreen, screen, priv->relative, |
| 279 | topscreen, same, offscreen, offthis); |
| 280 | |
| 281 | if (offscreen) { |
| 282 | /* If the cursor is off the input screen, it should be moving |
| 283 | * relative unless it is visible on a screen of the same display |
| 284 | * (i.e., one that shares the mouse). */ |
| 285 | if (same == 2 && !offthis) { |
| 286 | if (priv->relative) { |
| 287 | DMXDBG0(" Off screen, but not absolute\n"); |
| 288 | priv->relative = 0; |
| 289 | } |
| 290 | } |
| 291 | else { |
| 292 | if (!priv->relative) { |
| 293 | DMXDBG0(" Off screen, but not relative\n"); |
| 294 | priv->relative = 1; |
| 295 | } |
| 296 | } |
| 297 | } |
| 298 | else { |
| 299 | if (topscreen != screen) { |
| 300 | DMXDBG2(" Using screen %d instead of %d (from mi)\n", |
| 301 | topscreen, screen); |
| 302 | } |
| 303 | if (same) { |
| 304 | if (priv->relative) { |
| 305 | DMXDBG0(" On screen, but not absolute\n"); |
| 306 | priv->relative = 0; |
| 307 | } |
| 308 | } |
| 309 | else { |
| 310 | if (!priv->relative) { |
| 311 | DMXDBG0(" Not on screen, but not relative\n"); |
| 312 | priv->relative = 1; |
| 313 | } |
| 314 | } |
| 315 | } |
| 316 | |
| 317 | if (oldRelative != priv->relative) { |
| 318 | DMXDBG2(" Do switch, relative=%d same=%d\n", priv->relative, same); |
| 319 | /* Discard all pre-switch events */ |
| 320 | dmxSync(dmxScreen, TRUE); |
| 321 | while (dmxBackendPendingMotionEvent(priv, FALSE)); |
| 322 | |
| 323 | if (dmxInput->console && offscreen) { |
| 324 | /* Our special case is a console window and a backend window |
| 325 | * share a display. In this case, the cursor is either on |
| 326 | * the backend window (taking absolute input), or not (in |
| 327 | * which case the cursor needs to be in the console |
| 328 | * window). */ |
| 329 | if (priv->grabbedScreen) { |
| 330 | DMXDBG2(" *** force ungrab on %s, display=%p\n", |
| 331 | priv->grabbedScreen->name, |
| 332 | priv->grabbedScreen->beDisplay); |
| 333 | XUngrabPointer(priv->grabbedScreen->beDisplay, CurrentTime); |
| 334 | dmxSync(priv->grabbedScreen, TRUE); |
| 335 | priv->grabbedScreen = NULL; |
| 336 | } |
| 337 | DMXDBG0(" Capturing console\n"); |
| 338 | dmxConsoleCapture(dmxInput); |
| 339 | } |
| 340 | else { |
| 341 | priv->newscreen = 1; |
| 342 | if (priv->relative && !dmxInput->console) { |
| 343 | DMXDBG5(" Hide cursor; warp from %d,%d to %d,%d on %d\n", |
| 344 | priv->lastX, priv->lastY, priv->centerX, priv->centerY, |
| 345 | priv->myScreen); |
| 346 | dmxConsoleUncapture(dmxInput); |
| 347 | dmxHideCursor(dmxScreen); |
| 348 | priv->lastX = priv->centerX; |
| 349 | priv->lastY = priv->centerY; |
| 350 | XWarpPointer(priv->display, None, priv->window, |
| 351 | 0, 0, 0, 0, priv->lastX, priv->lastY); |
| 352 | dmxSync(dmxScreen, TRUE); |
| 353 | } |
| 354 | else { |
| 355 | DMXDBG0(" Check cursor\n"); |
| 356 | dmxCheckCursor(); |
| 357 | } |
| 358 | } |
| 359 | } |
| 360 | } |
| 361 | |
| 362 | /** Get events from the X queue on the backend servers and put the |
| 363 | * events into the DMX event queue. */ |
| 364 | void |
| 365 | dmxBackendCollectEvents(DevicePtr pDev, |
| 366 | dmxMotionProcPtr motion, |
| 367 | dmxEnqueueProcPtr enqueue, |
| 368 | dmxCheckSpecialProcPtr checkspecial, DMXBlockType block) |
| 369 | { |
| 370 | GETPRIVFROMPDEV; |
| 371 | GETDMXINPUTFROMPRIV; |
| 372 | XEvent X; |
| 373 | DMXScreenInfo *dmxScreen; |
| 374 | int left = 0; |
| 375 | int entered = priv->entered; |
| 376 | int ignoreLeave = 0; |
| 377 | int v[2]; |
| 378 | int retcode; |
| 379 | |
| 380 | while ((dmxScreen = dmxBackendGetEvent(priv, &X))) { |
| 381 | switch (X.type) { |
| 382 | case EnterNotify: |
| 383 | dmxCommonSaveState(priv); |
| 384 | if (entered++) |
| 385 | continue; |
| 386 | priv->entered = 1; |
| 387 | ignoreLeave = 1; |
| 388 | DMXDBG5("dmxBackendCollectEvents: Enter %lu %d,%d; GRAB %s %p\n", |
| 389 | X.xcrossing.root, X.xcrossing.x, X.xcrossing.y, |
| 390 | dmxScreen->name, dmxScreen->beDisplay); |
| 391 | XRaiseWindow(dmxScreen->beDisplay, dmxScreen->scrnWin); |
| 392 | priv->grabbedScreen = dmxScreen; |
| 393 | if ((retcode = XGrabPointer(dmxScreen->beDisplay, |
| 394 | dmxScreen->scrnWin, |
| 395 | True, 0, GrabModeAsync, |
| 396 | GrabModeAsync, None, None, |
| 397 | CurrentTime))) { |
| 398 | dmxLog(dmxError, |
| 399 | "XGrabPointer failed during backend enter (%d)\n", |
| 400 | retcode); |
| 401 | } |
| 402 | break; |
| 403 | case LeaveNotify: |
| 404 | if (ignoreLeave) { |
| 405 | ignoreLeave = 0; |
| 406 | continue; |
| 407 | } |
| 408 | dmxCommonRestoreState(priv); |
| 409 | if (left++) |
| 410 | continue; |
| 411 | DMXDBG7("dmxBackendCollectEvents: Leave %lu %d,%d %d %d %s %s\n", |
| 412 | X.xcrossing.root, X.xcrossing.x, X.xcrossing.y, |
| 413 | X.xcrossing.detail, X.xcrossing.focus, |
| 414 | priv->grabbedScreen ? "UNGRAB" : "", dmxScreen->name); |
| 415 | if (priv->grabbedScreen) { |
| 416 | XUngrabPointer(priv->grabbedScreen->beDisplay, CurrentTime); |
| 417 | dmxSync(priv->grabbedScreen, TRUE); |
| 418 | priv->grabbedScreen = NULL; |
| 419 | } |
| 420 | break; |
| 421 | case MotionNotify: |
| 422 | DMXDBG8("dmxBackendCollectEvents: MotionNotify %d/%d" |
| 423 | " newscreen=%d: %d %d (e=%d; last=%d,%d)\n", |
| 424 | dmxScreen->index, priv->myScreen, |
| 425 | priv->newscreen, |
| 426 | X.xmotion.x, X.xmotion.y, |
| 427 | entered, priv->lastX, priv->lastY); |
| 428 | if (dmxBackendPendingMotionEvent(priv, TRUE)) |
| 429 | continue; |
| 430 | if (!(dmxScreen = dmxBackendFindWindow(priv, X.xmotion.window))) |
| 431 | dmxLog(dmxFatal, |
| 432 | " Event on non-existant window %lu\n", |
| 433 | X.xmotion.window); |
| 434 | if (!priv->relative || dmxInput->console) { |
| 435 | int newX = X.xmotion.x - dmxScreen->rootX; |
| 436 | int newY = X.xmotion.y - dmxScreen->rootY; |
| 437 | |
| 438 | if (!priv->newscreen) { |
| 439 | int width = dmxScreen->rootWidth; |
| 440 | int height = dmxScreen->rootHeight; |
| 441 | |
| 442 | if (!newX) |
| 443 | newX = -1; |
| 444 | if (newX == width - 1) |
| 445 | newX = width; |
| 446 | if (!newY) |
| 447 | newY = -1; |
| 448 | if (newY == height - 1) |
| 449 | newY = height; |
| 450 | } |
| 451 | priv->newscreen = 0; |
| 452 | v[0] = dmxScreen->rootXOrigin + newX; |
| 453 | v[1] = dmxScreen->rootYOrigin + newY; |
| 454 | DMXDBG8(" Absolute move: %d,%d (r=%dx%d+%d+%d s=%dx%d)\n", |
| 455 | v[0], v[1], |
| 456 | priv->be->rootWidth, priv->be->rootHeight, |
| 457 | priv->be->rootX, priv->be->rootY, |
| 458 | priv->be->scrnWidth, priv->be->scrnHeight); |
| 459 | motion(priv->mou, v, 0, 2, DMX_ABSOLUTE, block); |
| 460 | priv->entered = 0; |
| 461 | } |
| 462 | else { |
| 463 | int newX = priv->lastX - X.xmotion.x; |
| 464 | int newY = priv->lastY - X.xmotion.y; |
| 465 | |
| 466 | priv->lastX = X.xmotion.x; |
| 467 | priv->lastY = X.xmotion.y; |
| 468 | v[0] = newX; |
| 469 | v[1] = newY; |
| 470 | DMXDBG2(" Relative move: %d, %d\n", v[0], v[1]); |
| 471 | motion(priv->mou, v, 0, 2, DMX_RELATIVE, block); |
| 472 | } |
| 473 | if (entered && priv->relative) { |
| 474 | DMXDBG4(" **** Relative %d %d instead of absolute %d %d\n", |
| 475 | v[0], v[1], |
| 476 | (dmxScreen->rootXOrigin + X.xmotion.x |
| 477 | - dmxScreen->rootX), |
| 478 | (dmxScreen->rootYOrigin + X.xmotion.y |
| 479 | - dmxScreen->rootY)); |
| 480 | } |
| 481 | break; |
| 482 | |
| 483 | case KeyPress: |
| 484 | case KeyRelease: |
| 485 | enqueue(priv->kbd, X.type, X.xkey.keycode, 0, NULL, block); |
| 486 | break; |
| 487 | case ButtonPress: |
| 488 | case ButtonRelease: |
| 489 | /* fall-through */ |
| 490 | default: |
| 491 | /* Pass the whole event here, because |
| 492 | * this may be an extension event. */ |
| 493 | enqueue(priv->mou, X.type, X.xbutton.button, 0, &X, block); |
| 494 | break; |
| 495 | } |
| 496 | } |
| 497 | } |
| 498 | |
| 499 | /** Called after input events are processed from the DMX queue. No |
| 500 | * event processing actually takes place here, but this is a convenient |
| 501 | * place to update the pointer. */ |
| 502 | void |
| 503 | dmxBackendProcessInput(pointer private) |
| 504 | { |
| 505 | GETPRIVFROMPRIVATE; |
| 506 | |
| 507 | DMXDBG6("dmxBackendProcessInput: myScreen=%d relative=%d" |
| 508 | " last=%d,%d center=%d,%d\n", |
| 509 | priv->myScreen, priv->relative, |
| 510 | priv->lastX, priv->lastY, priv->centerX, priv->centerY); |
| 511 | |
| 512 | if (priv->relative |
| 513 | && !dmxInput->console |
| 514 | && (priv->lastX != priv->centerX || priv->lastY != priv->centerY)) { |
| 515 | DMXDBG4(" warping pointer from last=%d,%d to center=%d,%d\n", |
| 516 | priv->lastX, priv->lastY, priv->centerX, priv->centerY); |
| 517 | priv->lastX = priv->centerX; |
| 518 | priv->lastY = priv->centerY; |
| 519 | XWarpPointer(priv->display, None, priv->window, |
| 520 | 0, 0, 0, 0, priv->lastX, priv->lastY); |
| 521 | dmxSync(&dmxScreens[priv->myScreen], TRUE); |
| 522 | } |
| 523 | } |
| 524 | |
| 525 | static void |
| 526 | dmxBackendComputeCenter(myPrivate * priv) |
| 527 | { |
| 528 | int centerX; |
| 529 | int centerY; |
| 530 | |
| 531 | centerX = priv->be->rootWidth / 2 + priv->be->rootX; |
| 532 | centerY = priv->be->rootHeight / 2 + priv->be->rootY; |
| 533 | |
| 534 | if (centerX > priv->be->rootWidth) |
| 535 | centerX = priv->be->rootWidth - 1; |
| 536 | if (centerY > priv->be->rootHeight) |
| 537 | centerY = priv->be->rootHeight - 1; |
| 538 | if (centerX < 1) |
| 539 | centerX = 1; |
| 540 | if (centerY < 1) |
| 541 | centerY = 1; |
| 542 | |
| 543 | priv->centerX = centerX; |
| 544 | priv->centerY = centerY; |
| 545 | } |
| 546 | |
| 547 | static DMXScreenInfo * |
| 548 | dmxBackendInitPrivate(DevicePtr pDev) |
| 549 | { |
| 550 | GETPRIVFROMPDEV; |
| 551 | DMXInputInfo *dmxInput = &dmxInputs[dmxLocal->inputIdx]; |
| 552 | DMXScreenInfo *dmxScreen; |
| 553 | int i; |
| 554 | |
| 555 | /* Fill in myPrivate */ |
| 556 | for (i = 0, dmxScreen = &dmxScreens[0]; i < dmxNumScreens; i++, dmxScreen++) { |
| 557 | if (dmxPropertySameDisplay(dmxScreen, dmxInput->name)) { |
| 558 | priv->display = dmxScreen->beDisplay; |
| 559 | priv->window = dmxScreen->scrnWin; |
| 560 | priv->be = dmxScreen; |
| 561 | break; |
| 562 | } |
| 563 | } |
| 564 | |
| 565 | if (i >= dmxNumScreens) |
| 566 | dmxLog(dmxFatal, |
| 567 | "%s is not an existing backend display - cannot initialize\n", |
| 568 | dmxInput->name); |
| 569 | |
| 570 | return dmxScreen; |
| 571 | } |
| 572 | |
| 573 | /** Re-initialized the backend device described by \a pDev (after a |
| 574 | * reconfig). */ |
| 575 | void |
| 576 | dmxBackendLateReInit(DevicePtr pDev) |
| 577 | { |
| 578 | GETPRIVFROMPDEV; |
| 579 | int x, y; |
| 580 | |
| 581 | dmxBackendSameDisplay(NULL, 0); /* Invalidate cache */ |
| 582 | dmxBackendInitPrivate(pDev); |
| 583 | dmxBackendComputeCenter(priv); |
| 584 | dmxGetGlobalPosition(&x, &y); |
| 585 | dmxInvalidateGlobalPosition(); /* To force event processing */ |
| 586 | dmxBackendUpdatePosition(priv, x, y); |
| 587 | } |
| 588 | |
| 589 | /** Initialized the backend device described by \a pDev. */ |
| 590 | void |
| 591 | dmxBackendInit(DevicePtr pDev) |
| 592 | { |
| 593 | GETPRIVFROMPDEV; |
| 594 | DMXScreenInfo *dmxScreen; |
| 595 | |
| 596 | dmxBackendSameDisplay(NULL, 0); /* Invalidate cache */ |
| 597 | |
| 598 | if (dmxLocal->type == DMX_LOCAL_MOUSE) |
| 599 | priv->mou = pDev; |
| 600 | if (dmxLocal->type == DMX_LOCAL_KEYBOARD) |
| 601 | priv->kbd = pDev; |
| 602 | if (priv->initialized++) |
| 603 | return; /* Only do once for mouse/keyboard pair */ |
| 604 | |
| 605 | dmxScreen = dmxBackendInitPrivate(pDev); |
| 606 | |
| 607 | /* Finish initialization using computed values or constants. */ |
| 608 | dmxBackendComputeCenter(priv); |
| 609 | priv->eventMask = (EnterWindowMask | LeaveWindowMask); |
| 610 | priv->myScreen = dmxScreen->index; |
| 611 | priv->lastX = priv->centerX; |
| 612 | priv->lastY = priv->centerY; |
| 613 | priv->relative = 0; |
| 614 | priv->newscreen = 0; |
| 615 | } |
| 616 | |
| 617 | /** Get information about the backend pointer (for initialization). */ |
| 618 | void |
| 619 | dmxBackendMouGetInfo(DevicePtr pDev, DMXLocalInitInfoPtr info) |
| 620 | { |
| 621 | const DMXScreenInfo *dmxScreen = dmxBackendInitPrivate(pDev); |
| 622 | |
| 623 | info->buttonClass = 1; |
| 624 | dmxCommonMouGetMap(pDev, info->map, &info->numButtons); |
| 625 | info->valuatorClass = 1; |
| 626 | info->numRelAxes = 2; |
| 627 | info->minval[0] = 0; |
| 628 | info->minval[1] = 0; |
| 629 | info->maxval[0] = dmxScreen->beWidth; |
| 630 | info->maxval[1] = dmxScreen->beHeight; |
| 631 | info->res[0] = 1; |
| 632 | info->minres[0] = 0; |
| 633 | info->maxres[0] = 1; |
| 634 | info->ptrFeedbackClass = 1; |
| 635 | } |
| 636 | |
| 637 | /** Get information about the backend keyboard (for initialization). */ |
| 638 | void |
| 639 | dmxBackendKbdGetInfo(DevicePtr pDev, DMXLocalInitInfoPtr info) |
| 640 | { |
| 641 | dmxCommonKbdGetInfo(pDev, info); |
| 642 | info->keyboard = 1; |
| 643 | info->keyClass = 1; |
| 644 | dmxCommonKbdGetMap(pDev, &info->keySyms, info->modMap); |
| 645 | info->freemap = 1; |
| 646 | info->focusClass = 1; |
| 647 | info->kbdFeedbackClass = 1; |
| 648 | } |
| 649 | |
| 650 | /** Process #DMXFunctionType functions. The only function handled here |
| 651 | * is to acknowledge a pending server shutdown. */ |
| 652 | int |
| 653 | dmxBackendFunctions(pointer private, DMXFunctionType function) |
| 654 | { |
| 655 | switch (function) { |
| 656 | case DMX_FUNCTION_TERMINATE: |
| 657 | return 1; |
| 658 | default: |
| 659 | return 0; |
| 660 | } |
| 661 | } |