| 1 | /* |
| 2 | * Copyright © 2008 Red Hat, Inc. |
| 3 | * |
| 4 | * Permission is hereby granted, free of charge, to any person obtaining a |
| 5 | * copy of this software and associated documentation files (the "Software"), |
| 6 | * to deal in the Software without restriction, including without limitation |
| 7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| 8 | * and/or sell copies of the Software, and to permit persons to whom the |
| 9 | * Software is furnished to do so, subject to the following conditions: |
| 10 | * |
| 11 | * The above copyright notice and this permission notice (including the next |
| 12 | * paragraph) shall be included in all copies or substantial portions of the |
| 13 | * Software. |
| 14 | * |
| 15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| 20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
| 21 | * DEALINGS IN THE SOFTWARE. |
| 22 | * |
| 23 | * Authors: Peter Hutterer |
| 24 | * |
| 25 | */ |
| 26 | |
| 27 | #ifdef HAVE_DIX_CONFIG_H |
| 28 | #include <dix-config.h> |
| 29 | #endif |
| 30 | |
| 31 | #include <X11/X.h> |
| 32 | #include <X11/extensions/XI2.h> |
| 33 | #include <X11/extensions/XIproto.h> |
| 34 | #include <X11/extensions/XI2proto.h> |
| 35 | #include "inputstr.h" |
| 36 | #include "windowstr.h" |
| 37 | #include "scrnintstr.h" |
| 38 | #include "exglobals.h" |
| 39 | #include "enterleave.h" |
| 40 | #include "eventconvert.h" |
| 41 | #include "xkbsrv.h" |
| 42 | #include "inpututils.h" |
| 43 | |
| 44 | /** |
| 45 | * @file |
| 46 | * This file describes the model for sending core enter/leave events and |
| 47 | * focus in/out in the case of multiple pointers/keyboard foci. |
| 48 | * |
| 49 | * Since we can't send more than one Enter or Leave/Focus in or out event per |
| 50 | * window to a core client without confusing it, this is a rather complicated |
| 51 | * approach. |
| 52 | * |
| 53 | * For a full description of the enter/leave model from a window's |
| 54 | * perspective, see |
| 55 | * http://lists.freedesktop.org/archives/xorg/2008-August/037606.html |
| 56 | * |
| 57 | * For a full description of the focus in/out model from a window's |
| 58 | * perspective, see |
| 59 | * http://lists.freedesktop.org/archives/xorg/2008-December/041740.html |
| 60 | * |
| 61 | * Additional notes: |
| 62 | * - The core protocol spec says that "In a LeaveNotify event, if a child of the |
| 63 | * event window contains the initial position of the pointer, then the child |
| 64 | * component is set to that child. Otherwise, it is None. For an EnterNotify |
| 65 | * event, if a child of the event window contains the final pointer position, |
| 66 | * then the child component is set to that child. Otherwise, it is None." |
| 67 | * |
| 68 | * By inference, this means that only NotifyVirtual or NotifyNonlinearVirtual |
| 69 | * events may have a subwindow set to other than None. |
| 70 | * |
| 71 | * - NotifyPointer events may be sent if the focus changes from window A to |
| 72 | * B. The assumption used in this model is that NotifyPointer events are only |
| 73 | * sent for the pointer paired with the keyboard that is involved in the focus |
| 74 | * events. For example, if F(W) changes because of keyboard 2, then |
| 75 | * NotifyPointer events are only sent for pointer 2. |
| 76 | */ |
| 77 | |
| 78 | static WindowPtr PointerWindows[MAXDEVICES]; |
| 79 | static WindowPtr FocusWindows[MAXDEVICES]; |
| 80 | |
| 81 | /** |
| 82 | * Return TRUE if 'win' has a pointer within its boundaries, excluding child |
| 83 | * window. |
| 84 | */ |
| 85 | static BOOL |
| 86 | HasPointer(DeviceIntPtr dev, WindowPtr win) |
| 87 | { |
| 88 | int i; |
| 89 | |
| 90 | /* FIXME: The enter/leave model does not cater for grabbed devices. For |
| 91 | * now, a quickfix: if the device about to send an enter/leave event to |
| 92 | * a window is grabbed, assume there is no pointer in that window. |
| 93 | * Fixes fdo 27804. |
| 94 | * There isn't enough beer in my fridge to fix this properly. |
| 95 | */ |
| 96 | if (dev->deviceGrab.grab) |
| 97 | return FALSE; |
| 98 | |
| 99 | for (i = 0; i < MAXDEVICES; i++) |
| 100 | if (PointerWindows[i] == win) |
| 101 | return TRUE; |
| 102 | |
| 103 | return FALSE; |
| 104 | } |
| 105 | |
| 106 | /** |
| 107 | * Return TRUE if at least one keyboard focus is set to 'win' (excluding |
| 108 | * descendants of win). |
| 109 | */ |
| 110 | static BOOL |
| 111 | HasFocus(WindowPtr win) |
| 112 | { |
| 113 | int i; |
| 114 | |
| 115 | for (i = 0; i < MAXDEVICES; i++) |
| 116 | if (FocusWindows[i] == win) |
| 117 | return TRUE; |
| 118 | |
| 119 | return FALSE; |
| 120 | } |
| 121 | |
| 122 | /** |
| 123 | * Return the window the device dev is currently on. |
| 124 | */ |
| 125 | static WindowPtr |
| 126 | PointerWin(DeviceIntPtr dev) |
| 127 | { |
| 128 | return PointerWindows[dev->id]; |
| 129 | } |
| 130 | |
| 131 | /** |
| 132 | * Search for the first window below 'win' that has a pointer directly within |
| 133 | * it's boundaries (excluding boundaries of its own descendants). |
| 134 | * |
| 135 | * @return The child window that has the pointer within its boundaries or |
| 136 | * NULL. |
| 137 | */ |
| 138 | static WindowPtr |
| 139 | FirstPointerChild(WindowPtr win) |
| 140 | { |
| 141 | int i; |
| 142 | |
| 143 | for (i = 0; i < MAXDEVICES; i++) { |
| 144 | if (PointerWindows[i] && IsParent(win, PointerWindows[i])) |
| 145 | return PointerWindows[i]; |
| 146 | } |
| 147 | |
| 148 | return NULL; |
| 149 | } |
| 150 | |
| 151 | /** |
| 152 | * Search for the first window below 'win' that has a focus directly within |
| 153 | * it's boundaries (excluding boundaries of its own descendants). |
| 154 | * |
| 155 | * @return The child window that has the pointer within its boundaries or |
| 156 | * NULL. |
| 157 | */ |
| 158 | static WindowPtr |
| 159 | FirstFocusChild(WindowPtr win) |
| 160 | { |
| 161 | int i; |
| 162 | |
| 163 | for (i = 0; i < MAXDEVICES; i++) { |
| 164 | if (FocusWindows[i] && FocusWindows[i] != PointerRootWin && |
| 165 | IsParent(win, FocusWindows[i])) |
| 166 | return FocusWindows[i]; |
| 167 | } |
| 168 | |
| 169 | return NULL; |
| 170 | } |
| 171 | |
| 172 | /** |
| 173 | * Set the presence flag for dev to mark that it is now in 'win'. |
| 174 | */ |
| 175 | void |
| 176 | EnterWindow(DeviceIntPtr dev, WindowPtr win, int mode) |
| 177 | { |
| 178 | PointerWindows[dev->id] = win; |
| 179 | } |
| 180 | |
| 181 | /** |
| 182 | * Unset the presence flag for dev to mark that it is not in 'win' anymore. |
| 183 | */ |
| 184 | void |
| 185 | LeaveWindow(DeviceIntPtr dev) |
| 186 | { |
| 187 | PointerWindows[dev->id] = NULL; |
| 188 | } |
| 189 | |
| 190 | /** |
| 191 | * Set the presence flag for dev to mark that it is now in 'win'. |
| 192 | */ |
| 193 | void |
| 194 | SetFocusIn(DeviceIntPtr dev, WindowPtr win) |
| 195 | { |
| 196 | FocusWindows[dev->id] = win; |
| 197 | } |
| 198 | |
| 199 | /** |
| 200 | * Unset the presence flag for dev to mark that it is not in 'win' anymore. |
| 201 | */ |
| 202 | void |
| 203 | SetFocusOut(DeviceIntPtr dev) |
| 204 | { |
| 205 | FocusWindows[dev->id] = NULL; |
| 206 | } |
| 207 | |
| 208 | /** |
| 209 | * Return the common ancestor of 'a' and 'b' (if one exists). |
| 210 | * @param a A window with the same ancestor as b. |
| 211 | * @param b A window with the same ancestor as a. |
| 212 | * @return The window that is the first ancestor of both 'a' and 'b', or the |
| 213 | * NullWindow if they do not have a common ancestor. |
| 214 | */ |
| 215 | WindowPtr |
| 216 | CommonAncestor(WindowPtr a, WindowPtr b) |
| 217 | { |
| 218 | for (b = b->parent; b; b = b->parent) |
| 219 | if (IsParent(b, a)) |
| 220 | return b; |
| 221 | return NullWindow; |
| 222 | } |
| 223 | |
| 224 | /** |
| 225 | * Send enter notifies to all windows between 'ancestor' and 'child' (excluding |
| 226 | * both). Events are sent running up the window hierarchy. This function |
| 227 | * recurses. |
| 228 | */ |
| 229 | static void |
| 230 | DeviceEnterNotifies(DeviceIntPtr dev, |
| 231 | int sourceid, |
| 232 | WindowPtr ancestor, WindowPtr child, int mode, int detail) |
| 233 | { |
| 234 | WindowPtr parent = child->parent; |
| 235 | |
| 236 | if (ancestor == parent) |
| 237 | return; |
| 238 | DeviceEnterNotifies(dev, sourceid, ancestor, parent, mode, detail); |
| 239 | DeviceEnterLeaveEvent(dev, sourceid, XI_Enter, mode, detail, parent, |
| 240 | child->drawable.id); |
| 241 | } |
| 242 | |
| 243 | /** |
| 244 | * Send enter notifies to all windows between 'ancestor' and 'child' (excluding |
| 245 | * both). Events are sent running down the window hierarchy. This function |
| 246 | * recurses. |
| 247 | */ |
| 248 | static void |
| 249 | CoreEnterNotifies(DeviceIntPtr dev, |
| 250 | WindowPtr ancestor, WindowPtr child, int mode, int detail) |
| 251 | { |
| 252 | WindowPtr parent = child->parent; |
| 253 | |
| 254 | if (ancestor == parent) |
| 255 | return; |
| 256 | CoreEnterNotifies(dev, ancestor, parent, mode, detail); |
| 257 | |
| 258 | /* Case 3: |
| 259 | A is above W, B is a descendant |
| 260 | |
| 261 | Classically: The move generates an EnterNotify on W with a detail of |
| 262 | Virtual or NonlinearVirtual |
| 263 | |
| 264 | MPX: |
| 265 | Case 3A: There is at least one other pointer on W itself |
| 266 | P(W) doesn't change, so the event should be suppressed |
| 267 | Case 3B: Otherwise, if there is at least one other pointer in a |
| 268 | descendant |
| 269 | P(W) stays on the same descendant, or changes to a different |
| 270 | descendant. The event should be suppressed. |
| 271 | Case 3C: Otherwise: |
| 272 | P(W) moves from a window above W to a descendant. The subwindow |
| 273 | field is set to the child containing the descendant. The detail |
| 274 | may need to be changed from Virtual to NonlinearVirtual depending |
| 275 | on the previous P(W). */ |
| 276 | |
| 277 | if (!HasPointer(dev, parent) && !FirstPointerChild(parent)) |
| 278 | CoreEnterLeaveEvent(dev, EnterNotify, mode, detail, parent, |
| 279 | child->drawable.id); |
| 280 | } |
| 281 | |
| 282 | static void |
| 283 | CoreLeaveNotifies(DeviceIntPtr dev, |
| 284 | WindowPtr child, WindowPtr ancestor, int mode, int detail) |
| 285 | { |
| 286 | WindowPtr win; |
| 287 | |
| 288 | if (ancestor == child) |
| 289 | return; |
| 290 | |
| 291 | for (win = child->parent; win != ancestor; win = win->parent) { |
| 292 | /*Case 7: |
| 293 | A is a descendant of W, B is above W |
| 294 | |
| 295 | Classically: A LeaveNotify is generated on W with a detail of Virtual |
| 296 | or NonlinearVirtual. |
| 297 | |
| 298 | MPX: |
| 299 | Case 3A: There is at least one other pointer on W itself |
| 300 | P(W) doesn't change, the event should be suppressed. |
| 301 | Case 3B: Otherwise, if there is at least one other pointer in a |
| 302 | descendant |
| 303 | P(W) stays on the same descendant, or changes to a different |
| 304 | descendant. The event should be suppressed. |
| 305 | Case 3C: Otherwise: |
| 306 | P(W) changes from the descendant of W to a window above W. |
| 307 | The detail may need to be changed from Virtual to NonlinearVirtual |
| 308 | or vice-versa depending on the new P(W). */ |
| 309 | |
| 310 | /* If one window has a pointer or a child with a pointer, skip some |
| 311 | * work and exit. */ |
| 312 | if (HasPointer(dev, win) || FirstPointerChild(win)) |
| 313 | return; |
| 314 | |
| 315 | CoreEnterLeaveEvent(dev, LeaveNotify, mode, detail, win, |
| 316 | child->drawable.id); |
| 317 | |
| 318 | child = win; |
| 319 | } |
| 320 | } |
| 321 | |
| 322 | /** |
| 323 | * Send leave notifies to all windows between 'child' and 'ancestor'. |
| 324 | * Events are sent running up the hierarchy. |
| 325 | */ |
| 326 | static void |
| 327 | DeviceLeaveNotifies(DeviceIntPtr dev, |
| 328 | int sourceid, |
| 329 | WindowPtr child, WindowPtr ancestor, int mode, int detail) |
| 330 | { |
| 331 | WindowPtr win; |
| 332 | |
| 333 | if (ancestor == child) |
| 334 | return; |
| 335 | for (win = child->parent; win != ancestor; win = win->parent) { |
| 336 | DeviceEnterLeaveEvent(dev, sourceid, XI_Leave, mode, detail, win, |
| 337 | child->drawable.id); |
| 338 | child = win; |
| 339 | } |
| 340 | } |
| 341 | |
| 342 | /** |
| 343 | * Pointer dev moves from A to B and A neither a descendant of B nor is |
| 344 | * B a descendant of A. |
| 345 | */ |
| 346 | static void |
| 347 | CoreEnterLeaveNonLinear(DeviceIntPtr dev, WindowPtr A, WindowPtr B, int mode) |
| 348 | { |
| 349 | WindowPtr X = CommonAncestor(A, B); |
| 350 | |
| 351 | /* Case 4: |
| 352 | A is W, B is above W |
| 353 | |
| 354 | Classically: The move generates a LeaveNotify on W with a detail of |
| 355 | Ancestor or Nonlinear |
| 356 | |
| 357 | MPX: |
| 358 | Case 3A: There is at least one other pointer on W itself |
| 359 | P(W) doesn't change, the event should be suppressed |
| 360 | Case 3B: Otherwise, if there is at least one other pointer in a |
| 361 | descendant of W |
| 362 | P(W) changes from W to a descendant of W. The subwindow field |
| 363 | is set to the child containing the new P(W), the detail field |
| 364 | is set to Inferior |
| 365 | Case 3C: Otherwise: |
| 366 | The pointer window moves from W to a window above W. |
| 367 | The detail may need to be changed from Ancestor to Nonlinear or |
| 368 | vice versa depending on the the new P(W) |
| 369 | */ |
| 370 | |
| 371 | if (!HasPointer(dev, A)) { |
| 372 | WindowPtr child = FirstPointerChild(A); |
| 373 | |
| 374 | if (child) |
| 375 | CoreEnterLeaveEvent(dev, LeaveNotify, mode, NotifyInferior, A, |
| 376 | None); |
| 377 | else |
| 378 | CoreEnterLeaveEvent(dev, LeaveNotify, mode, NotifyNonlinear, A, |
| 379 | None); |
| 380 | } |
| 381 | |
| 382 | CoreLeaveNotifies(dev, A, X, mode, NotifyNonlinearVirtual); |
| 383 | |
| 384 | /* |
| 385 | Case 9: |
| 386 | A is a descendant of W, B is a descendant of W |
| 387 | |
| 388 | Classically: No events are generated on W |
| 389 | MPX: The pointer window stays the same or moves to a different |
| 390 | descendant of W. No events should be generated on W. |
| 391 | |
| 392 | Therefore, no event to X. |
| 393 | */ |
| 394 | |
| 395 | CoreEnterNotifies(dev, X, B, mode, NotifyNonlinearVirtual); |
| 396 | |
| 397 | /* Case 2: |
| 398 | A is above W, B=W |
| 399 | |
| 400 | Classically: The move generates an EnterNotify on W with a detail of |
| 401 | Ancestor or Nonlinear |
| 402 | |
| 403 | MPX: |
| 404 | Case 2A: There is at least one other pointer on W itself |
| 405 | P(W) doesn't change, so the event should be suppressed |
| 406 | Case 2B: Otherwise, if there is at least one other pointer in a |
| 407 | descendant |
| 408 | P(W) moves from a descendant to W. detail is changed to Inferior, |
| 409 | subwindow is set to the child containing the previous P(W) |
| 410 | Case 2C: Otherwise: |
| 411 | P(W) changes from a window above W to W itself. |
| 412 | The detail may need to be changed from Ancestor to Nonlinear |
| 413 | or vice-versa depending on the previous P(W). */ |
| 414 | |
| 415 | if (!HasPointer(dev, B)) { |
| 416 | WindowPtr child = FirstPointerChild(B); |
| 417 | |
| 418 | if (child) |
| 419 | CoreEnterLeaveEvent(dev, EnterNotify, mode, NotifyInferior, B, |
| 420 | None); |
| 421 | else |
| 422 | CoreEnterLeaveEvent(dev, EnterNotify, mode, NotifyNonlinear, B, |
| 423 | None); |
| 424 | } |
| 425 | } |
| 426 | |
| 427 | /** |
| 428 | * Pointer dev moves from A to B and A is a descendant of B. |
| 429 | */ |
| 430 | static void |
| 431 | CoreEnterLeaveToAncestor(DeviceIntPtr dev, WindowPtr A, WindowPtr B, int mode) |
| 432 | { |
| 433 | /* Case 4: |
| 434 | A is W, B is above W |
| 435 | |
| 436 | Classically: The move generates a LeaveNotify on W with a detail of |
| 437 | Ancestor or Nonlinear |
| 438 | |
| 439 | MPX: |
| 440 | Case 3A: There is at least one other pointer on W itself |
| 441 | P(W) doesn't change, the event should be suppressed |
| 442 | Case 3B: Otherwise, if there is at least one other pointer in a |
| 443 | descendant of W |
| 444 | P(W) changes from W to a descendant of W. The subwindow field |
| 445 | is set to the child containing the new P(W), the detail field |
| 446 | is set to Inferior |
| 447 | Case 3C: Otherwise: |
| 448 | The pointer window moves from W to a window above W. |
| 449 | The detail may need to be changed from Ancestor to Nonlinear or |
| 450 | vice versa depending on the the new P(W) |
| 451 | */ |
| 452 | if (!HasPointer(dev, A)) { |
| 453 | WindowPtr child = FirstPointerChild(A); |
| 454 | |
| 455 | if (child) |
| 456 | CoreEnterLeaveEvent(dev, LeaveNotify, mode, NotifyInferior, A, |
| 457 | None); |
| 458 | else |
| 459 | CoreEnterLeaveEvent(dev, LeaveNotify, mode, NotifyAncestor, A, |
| 460 | None); |
| 461 | } |
| 462 | |
| 463 | CoreLeaveNotifies(dev, A, B, mode, NotifyVirtual); |
| 464 | |
| 465 | /* Case 8: |
| 466 | A is a descendant of W, B is W |
| 467 | |
| 468 | Classically: A EnterNotify is generated on W with a detail of |
| 469 | NotifyInferior |
| 470 | |
| 471 | MPX: |
| 472 | Case 3A: There is at least one other pointer on W itself |
| 473 | P(W) doesn't change, the event should be suppressed |
| 474 | Case 3B: Otherwise: |
| 475 | P(W) changes from a descendant to W itself. The subwindow |
| 476 | field should be set to the child containing the old P(W) <<< WRONG */ |
| 477 | |
| 478 | if (!HasPointer(dev, B)) |
| 479 | CoreEnterLeaveEvent(dev, EnterNotify, mode, NotifyInferior, B, None); |
| 480 | |
| 481 | } |
| 482 | |
| 483 | /** |
| 484 | * Pointer dev moves from A to B and B is a descendant of A. |
| 485 | */ |
| 486 | static void |
| 487 | CoreEnterLeaveToDescendant(DeviceIntPtr dev, WindowPtr A, WindowPtr B, int mode) |
| 488 | { |
| 489 | /* Case 6: |
| 490 | A is W, B is a descendant of W |
| 491 | |
| 492 | Classically: A LeaveNotify is generated on W with a detail of |
| 493 | NotifyInferior |
| 494 | |
| 495 | MPX: |
| 496 | Case 3A: There is at least one other pointer on W itself |
| 497 | P(W) doesn't change, the event should be suppressed |
| 498 | Case 3B: Otherwise: |
| 499 | P(W) changes from W to a descendant of W. The subwindow field |
| 500 | is set to the child containing the new P(W) <<< THIS IS WRONG */ |
| 501 | |
| 502 | if (!HasPointer(dev, A)) |
| 503 | CoreEnterLeaveEvent(dev, LeaveNotify, mode, NotifyInferior, A, None); |
| 504 | |
| 505 | CoreEnterNotifies(dev, A, B, mode, NotifyVirtual); |
| 506 | |
| 507 | /* Case 2: |
| 508 | A is above W, B=W |
| 509 | |
| 510 | Classically: The move generates an EnterNotify on W with a detail of |
| 511 | Ancestor or Nonlinear |
| 512 | |
| 513 | MPX: |
| 514 | Case 2A: There is at least one other pointer on W itself |
| 515 | P(W) doesn't change, so the event should be suppressed |
| 516 | Case 2B: Otherwise, if there is at least one other pointer in a |
| 517 | descendant |
| 518 | P(W) moves from a descendant to W. detail is changed to Inferior, |
| 519 | subwindow is set to the child containing the previous P(W) |
| 520 | Case 2C: Otherwise: |
| 521 | P(W) changes from a window above W to W itself. |
| 522 | The detail may need to be changed from Ancestor to Nonlinear |
| 523 | or vice-versa depending on the previous P(W). */ |
| 524 | |
| 525 | if (!HasPointer(dev, B)) { |
| 526 | WindowPtr child = FirstPointerChild(B); |
| 527 | |
| 528 | if (child) |
| 529 | CoreEnterLeaveEvent(dev, EnterNotify, mode, NotifyInferior, B, |
| 530 | None); |
| 531 | else |
| 532 | CoreEnterLeaveEvent(dev, EnterNotify, mode, NotifyAncestor, B, |
| 533 | None); |
| 534 | } |
| 535 | } |
| 536 | |
| 537 | static void |
| 538 | CoreEnterLeaveEvents(DeviceIntPtr dev, WindowPtr from, WindowPtr to, int mode) |
| 539 | { |
| 540 | if (!IsMaster(dev)) |
| 541 | return; |
| 542 | |
| 543 | LeaveWindow(dev); |
| 544 | |
| 545 | if (IsParent(from, to)) |
| 546 | CoreEnterLeaveToDescendant(dev, from, to, mode); |
| 547 | else if (IsParent(to, from)) |
| 548 | CoreEnterLeaveToAncestor(dev, from, to, mode); |
| 549 | else |
| 550 | CoreEnterLeaveNonLinear(dev, from, to, mode); |
| 551 | |
| 552 | EnterWindow(dev, to, mode); |
| 553 | } |
| 554 | |
| 555 | static void |
| 556 | DeviceEnterLeaveEvents(DeviceIntPtr dev, |
| 557 | int sourceid, WindowPtr from, WindowPtr to, int mode) |
| 558 | { |
| 559 | if (IsParent(from, to)) { |
| 560 | DeviceEnterLeaveEvent(dev, sourceid, XI_Leave, mode, NotifyInferior, |
| 561 | from, None); |
| 562 | DeviceEnterNotifies(dev, sourceid, from, to, mode, NotifyVirtual); |
| 563 | DeviceEnterLeaveEvent(dev, sourceid, XI_Enter, mode, NotifyAncestor, to, |
| 564 | None); |
| 565 | } |
| 566 | else if (IsParent(to, from)) { |
| 567 | DeviceEnterLeaveEvent(dev, sourceid, XI_Leave, mode, NotifyAncestor, |
| 568 | from, None); |
| 569 | DeviceLeaveNotifies(dev, sourceid, from, to, mode, NotifyVirtual); |
| 570 | DeviceEnterLeaveEvent(dev, sourceid, XI_Enter, mode, NotifyInferior, to, |
| 571 | None); |
| 572 | } |
| 573 | else { /* neither from nor to is descendent of the other */ |
| 574 | WindowPtr common = CommonAncestor(to, from); |
| 575 | |
| 576 | /* common == NullWindow ==> different screens */ |
| 577 | DeviceEnterLeaveEvent(dev, sourceid, XI_Leave, mode, NotifyNonlinear, |
| 578 | from, None); |
| 579 | DeviceLeaveNotifies(dev, sourceid, from, common, mode, |
| 580 | NotifyNonlinearVirtual); |
| 581 | DeviceEnterNotifies(dev, sourceid, common, to, mode, |
| 582 | NotifyNonlinearVirtual); |
| 583 | DeviceEnterLeaveEvent(dev, sourceid, XI_Enter, mode, NotifyNonlinear, |
| 584 | to, None); |
| 585 | } |
| 586 | } |
| 587 | |
| 588 | /** |
| 589 | * Figure out if enter/leave events are necessary and send them to the |
| 590 | * appropriate windows. |
| 591 | * |
| 592 | * @param fromWin Window the sprite moved out of. |
| 593 | * @param toWin Window the sprite moved into. |
| 594 | */ |
| 595 | void |
| 596 | DoEnterLeaveEvents(DeviceIntPtr pDev, |
| 597 | int sourceid, WindowPtr fromWin, WindowPtr toWin, int mode) |
| 598 | { |
| 599 | if (!IsPointerDevice(pDev)) |
| 600 | return; |
| 601 | |
| 602 | if (fromWin == toWin) |
| 603 | return; |
| 604 | |
| 605 | if (mode != XINotifyPassiveGrab && mode != XINotifyPassiveUngrab) |
| 606 | CoreEnterLeaveEvents(pDev, fromWin, toWin, mode); |
| 607 | DeviceEnterLeaveEvents(pDev, sourceid, fromWin, toWin, mode); |
| 608 | } |
| 609 | |
| 610 | static void |
| 611 | FixDeviceValuator(DeviceIntPtr dev, deviceValuator * ev, ValuatorClassPtr v, |
| 612 | int first) |
| 613 | { |
| 614 | int nval = v->numAxes - first; |
| 615 | |
| 616 | ev->type = DeviceValuator; |
| 617 | ev->deviceid = dev->id; |
| 618 | ev->num_valuators = nval < 3 ? nval : 3; |
| 619 | ev->first_valuator = first; |
| 620 | switch (ev->num_valuators) { |
| 621 | case 3: |
| 622 | ev->valuator2 = v->axisVal[first + 2]; |
| 623 | case 2: |
| 624 | ev->valuator1 = v->axisVal[first + 1]; |
| 625 | case 1: |
| 626 | ev->valuator0 = v->axisVal[first]; |
| 627 | break; |
| 628 | } |
| 629 | first += ev->num_valuators; |
| 630 | } |
| 631 | |
| 632 | static void |
| 633 | FixDeviceStateNotify(DeviceIntPtr dev, deviceStateNotify * ev, KeyClassPtr k, |
| 634 | ButtonClassPtr b, ValuatorClassPtr v, int first) |
| 635 | { |
| 636 | ev->type = DeviceStateNotify; |
| 637 | ev->deviceid = dev->id; |
| 638 | ev->time = currentTime.milliseconds; |
| 639 | ev->classes_reported = 0; |
| 640 | ev->num_keys = 0; |
| 641 | ev->num_buttons = 0; |
| 642 | ev->num_valuators = 0; |
| 643 | |
| 644 | if (b) { |
| 645 | ev->classes_reported |= (1 << ButtonClass); |
| 646 | ev->num_buttons = b->numButtons; |
| 647 | memcpy((char *) ev->buttons, (char *) b->down, 4); |
| 648 | } |
| 649 | else if (k) { |
| 650 | ev->classes_reported |= (1 << KeyClass); |
| 651 | ev->num_keys = k->xkbInfo->desc->max_key_code - |
| 652 | k->xkbInfo->desc->min_key_code; |
| 653 | memmove((char *) &ev->keys[0], (char *) k->down, 4); |
| 654 | } |
| 655 | if (v) { |
| 656 | int nval = v->numAxes - first; |
| 657 | |
| 658 | ev->classes_reported |= (1 << ValuatorClass); |
| 659 | ev->classes_reported |= valuator_get_mode(dev, 0) << ModeBitsShift; |
| 660 | ev->num_valuators = nval < 3 ? nval : 3; |
| 661 | switch (ev->num_valuators) { |
| 662 | case 3: |
| 663 | ev->valuator2 = v->axisVal[first + 2]; |
| 664 | case 2: |
| 665 | ev->valuator1 = v->axisVal[first + 1]; |
| 666 | case 1: |
| 667 | ev->valuator0 = v->axisVal[first]; |
| 668 | break; |
| 669 | } |
| 670 | } |
| 671 | } |
| 672 | |
| 673 | |
| 674 | static void |
| 675 | DeliverStateNotifyEvent(DeviceIntPtr dev, WindowPtr win) |
| 676 | { |
| 677 | int evcount = 1; |
| 678 | deviceStateNotify *ev, *sev; |
| 679 | deviceKeyStateNotify *kev; |
| 680 | deviceButtonStateNotify *bev; |
| 681 | |
| 682 | KeyClassPtr k; |
| 683 | ButtonClassPtr b; |
| 684 | ValuatorClassPtr v; |
| 685 | int nval = 0, nkeys = 0, nbuttons = 0, first = 0; |
| 686 | |
| 687 | if (!(wOtherInputMasks(win)) || |
| 688 | !(wOtherInputMasks(win)->inputEvents[dev->id] & DeviceStateNotifyMask)) |
| 689 | return; |
| 690 | |
| 691 | if ((b = dev->button) != NULL) { |
| 692 | nbuttons = b->numButtons; |
| 693 | if (nbuttons > 32) |
| 694 | evcount++; |
| 695 | } |
| 696 | if ((k = dev->key) != NULL) { |
| 697 | nkeys = k->xkbInfo->desc->max_key_code - k->xkbInfo->desc->min_key_code; |
| 698 | if (nkeys > 32) |
| 699 | evcount++; |
| 700 | if (nbuttons > 0) { |
| 701 | evcount++; |
| 702 | } |
| 703 | } |
| 704 | if ((v = dev->valuator) != NULL) { |
| 705 | nval = v->numAxes; |
| 706 | |
| 707 | if (nval > 3) |
| 708 | evcount++; |
| 709 | if (nval > 6) { |
| 710 | if (!(k && b)) |
| 711 | evcount++; |
| 712 | if (nval > 9) |
| 713 | evcount += ((nval - 7) / 3); |
| 714 | } |
| 715 | } |
| 716 | |
| 717 | sev = ev = (deviceStateNotify *) malloc(evcount * sizeof(xEvent)); |
| 718 | FixDeviceStateNotify(dev, ev, NULL, NULL, NULL, first); |
| 719 | |
| 720 | if (b != NULL) { |
| 721 | FixDeviceStateNotify(dev, ev++, NULL, b, v, first); |
| 722 | first += 3; |
| 723 | nval -= 3; |
| 724 | if (nbuttons > 32) { |
| 725 | (ev - 1)->deviceid |= MORE_EVENTS; |
| 726 | bev = (deviceButtonStateNotify *) ev++; |
| 727 | bev->type = DeviceButtonStateNotify; |
| 728 | bev->deviceid = dev->id; |
| 729 | memcpy((char *) &bev->buttons[4], (char *) &b->down[4], |
| 730 | DOWN_LENGTH - 4); |
| 731 | } |
| 732 | if (nval > 0) { |
| 733 | (ev - 1)->deviceid |= MORE_EVENTS; |
| 734 | FixDeviceValuator(dev, (deviceValuator *) ev++, v, first); |
| 735 | first += 3; |
| 736 | nval -= 3; |
| 737 | } |
| 738 | } |
| 739 | |
| 740 | if (k != NULL) { |
| 741 | FixDeviceStateNotify(dev, ev++, k, NULL, v, first); |
| 742 | first += 3; |
| 743 | nval -= 3; |
| 744 | if (nkeys > 32) { |
| 745 | (ev - 1)->deviceid |= MORE_EVENTS; |
| 746 | kev = (deviceKeyStateNotify *) ev++; |
| 747 | kev->type = DeviceKeyStateNotify; |
| 748 | kev->deviceid = dev->id; |
| 749 | memmove((char *) &kev->keys[0], (char *) &k->down[4], 28); |
| 750 | } |
| 751 | if (nval > 0) { |
| 752 | (ev - 1)->deviceid |= MORE_EVENTS; |
| 753 | FixDeviceValuator(dev, (deviceValuator *) ev++, v, first); |
| 754 | first += 3; |
| 755 | nval -= 3; |
| 756 | } |
| 757 | } |
| 758 | |
| 759 | while (nval > 0) { |
| 760 | FixDeviceStateNotify(dev, ev++, NULL, NULL, v, first); |
| 761 | first += 3; |
| 762 | nval -= 3; |
| 763 | if (nval > 0) { |
| 764 | (ev - 1)->deviceid |= MORE_EVENTS; |
| 765 | FixDeviceValuator(dev, (deviceValuator *) ev++, v, first); |
| 766 | first += 3; |
| 767 | nval -= 3; |
| 768 | } |
| 769 | } |
| 770 | |
| 771 | DeliverEventsToWindow(dev, win, (xEvent *) sev, evcount, |
| 772 | DeviceStateNotifyMask, NullGrab); |
| 773 | free(sev); |
| 774 | } |
| 775 | |
| 776 | void |
| 777 | DeviceFocusEvent(DeviceIntPtr dev, int type, int mode, int detail, |
| 778 | WindowPtr pWin) |
| 779 | { |
| 780 | deviceFocus event; |
| 781 | xXIFocusInEvent *xi2event; |
| 782 | DeviceIntPtr mouse; |
| 783 | int btlen, len, i; |
| 784 | |
| 785 | mouse = IsFloating(dev) ? dev : GetMaster(dev, MASTER_POINTER); |
| 786 | |
| 787 | /* XI 2 event */ |
| 788 | btlen = (mouse->button) ? bits_to_bytes(mouse->button->numButtons) : 0; |
| 789 | btlen = bytes_to_int32(btlen); |
| 790 | len = sizeof(xXIFocusInEvent) + btlen * 4; |
| 791 | |
| 792 | xi2event = calloc(1, len); |
| 793 | xi2event->type = GenericEvent; |
| 794 | xi2event->extension = IReqCode; |
| 795 | xi2event->evtype = type; |
| 796 | xi2event->length = bytes_to_int32(len - sizeof(xEvent)); |
| 797 | xi2event->buttons_len = btlen; |
| 798 | xi2event->detail = detail; |
| 799 | xi2event->time = currentTime.milliseconds; |
| 800 | xi2event->deviceid = dev->id; |
| 801 | xi2event->sourceid = dev->id; /* a device doesn't change focus by itself */ |
| 802 | xi2event->mode = mode; |
| 803 | xi2event->root_x = double_to_fp1616(mouse->spriteInfo->sprite->hot.x); |
| 804 | xi2event->root_y = double_to_fp1616(mouse->spriteInfo->sprite->hot.y); |
| 805 | |
| 806 | for (i = 0; mouse && mouse->button && i < mouse->button->numButtons; i++) |
| 807 | if (BitIsOn(mouse->button->down, i)) |
| 808 | SetBit(&xi2event[1], mouse->button->map[i]); |
| 809 | |
| 810 | if (dev->key) { |
| 811 | xi2event->mods.base_mods = dev->key->xkbInfo->state.base_mods; |
| 812 | xi2event->mods.latched_mods = dev->key->xkbInfo->state.latched_mods; |
| 813 | xi2event->mods.locked_mods = dev->key->xkbInfo->state.locked_mods; |
| 814 | xi2event->mods.effective_mods = dev->key->xkbInfo->state.mods; |
| 815 | |
| 816 | xi2event->group.base_group = dev->key->xkbInfo->state.base_group; |
| 817 | xi2event->group.latched_group = dev->key->xkbInfo->state.latched_group; |
| 818 | xi2event->group.locked_group = dev->key->xkbInfo->state.locked_group; |
| 819 | xi2event->group.effective_group = dev->key->xkbInfo->state.group; |
| 820 | } |
| 821 | |
| 822 | FixUpEventFromWindow(dev->spriteInfo->sprite, (xEvent *) xi2event, pWin, |
| 823 | None, FALSE); |
| 824 | |
| 825 | DeliverEventsToWindow(dev, pWin, (xEvent *) xi2event, 1, |
| 826 | GetEventFilter(dev, (xEvent *) xi2event), NullGrab); |
| 827 | |
| 828 | free(xi2event); |
| 829 | |
| 830 | /* XI 1.x event */ |
| 831 | event = (deviceFocus) { |
| 832 | .deviceid = dev->id, |
| 833 | .mode = mode, |
| 834 | .type = (type == XI_FocusIn) ? DeviceFocusIn : DeviceFocusOut, |
| 835 | .detail = detail, |
| 836 | .window = pWin->drawable.id, |
| 837 | .time = currentTime.milliseconds |
| 838 | }; |
| 839 | |
| 840 | DeliverEventsToWindow(dev, pWin, (xEvent *) &event, 1, |
| 841 | DeviceFocusChangeMask, NullGrab); |
| 842 | |
| 843 | if (event.type == DeviceFocusIn) |
| 844 | DeliverStateNotifyEvent(dev, pWin); |
| 845 | } |
| 846 | |
| 847 | /** |
| 848 | * Send focus out events to all windows between 'child' and 'ancestor'. |
| 849 | * Events are sent running up the hierarchy. |
| 850 | */ |
| 851 | static void |
| 852 | DeviceFocusOutEvents(DeviceIntPtr dev, |
| 853 | WindowPtr child, WindowPtr ancestor, int mode, int detail) |
| 854 | { |
| 855 | WindowPtr win; |
| 856 | |
| 857 | if (ancestor == child) |
| 858 | return; |
| 859 | for (win = child->parent; win != ancestor; win = win->parent) |
| 860 | DeviceFocusEvent(dev, XI_FocusOut, mode, detail, win); |
| 861 | } |
| 862 | |
| 863 | /** |
| 864 | * Send enter notifies to all windows between 'ancestor' and 'child' (excluding |
| 865 | * both). Events are sent running up the window hierarchy. This function |
| 866 | * recurses. |
| 867 | */ |
| 868 | static void |
| 869 | DeviceFocusInEvents(DeviceIntPtr dev, |
| 870 | WindowPtr ancestor, WindowPtr child, int mode, int detail) |
| 871 | { |
| 872 | WindowPtr parent = child->parent; |
| 873 | |
| 874 | if (ancestor == parent || !parent) |
| 875 | return; |
| 876 | DeviceFocusInEvents(dev, ancestor, parent, mode, detail); |
| 877 | DeviceFocusEvent(dev, XI_FocusIn, mode, detail, parent); |
| 878 | } |
| 879 | |
| 880 | /** |
| 881 | * Send FocusIn events to all windows between 'ancestor' and 'child' (excluding |
| 882 | * both). Events are sent running down the window hierarchy. This function |
| 883 | * recurses. |
| 884 | */ |
| 885 | static void |
| 886 | CoreFocusInEvents(DeviceIntPtr dev, |
| 887 | WindowPtr ancestor, WindowPtr child, int mode, int detail) |
| 888 | { |
| 889 | WindowPtr parent = child->parent; |
| 890 | |
| 891 | if (ancestor == parent) |
| 892 | return; |
| 893 | CoreFocusInEvents(dev, ancestor, parent, mode, detail); |
| 894 | |
| 895 | /* Case 3: |
| 896 | A is above W, B is a descendant |
| 897 | |
| 898 | Classically: The move generates an FocusIn on W with a detail of |
| 899 | Virtual or NonlinearVirtual |
| 900 | |
| 901 | MPX: |
| 902 | Case 3A: There is at least one other focus on W itself |
| 903 | F(W) doesn't change, so the event should be suppressed |
| 904 | Case 3B: Otherwise, if there is at least one other focus in a |
| 905 | descendant |
| 906 | F(W) stays on the same descendant, or changes to a different |
| 907 | descendant. The event should be suppressed. |
| 908 | Case 3C: Otherwise: |
| 909 | F(W) moves from a window above W to a descendant. The detail may |
| 910 | need to be changed from Virtual to NonlinearVirtual depending |
| 911 | on the previous F(W). */ |
| 912 | |
| 913 | if (!HasFocus(parent) && !FirstFocusChild(parent)) |
| 914 | CoreFocusEvent(dev, FocusIn, mode, detail, parent); |
| 915 | } |
| 916 | |
| 917 | static void |
| 918 | CoreFocusOutEvents(DeviceIntPtr dev, |
| 919 | WindowPtr child, WindowPtr ancestor, int mode, int detail) |
| 920 | { |
| 921 | WindowPtr win; |
| 922 | |
| 923 | if (ancestor == child) |
| 924 | return; |
| 925 | |
| 926 | for (win = child->parent; win != ancestor; win = win->parent) { |
| 927 | /*Case 7: |
| 928 | A is a descendant of W, B is above W |
| 929 | |
| 930 | Classically: A FocusOut is generated on W with a detail of Virtual |
| 931 | or NonlinearVirtual. |
| 932 | |
| 933 | MPX: |
| 934 | Case 3A: There is at least one other focus on W itself |
| 935 | F(W) doesn't change, the event should be suppressed. |
| 936 | Case 3B: Otherwise, if there is at least one other focus in a |
| 937 | descendant |
| 938 | F(W) stays on the same descendant, or changes to a different |
| 939 | descendant. The event should be suppressed. |
| 940 | Case 3C: Otherwise: |
| 941 | F(W) changes from the descendant of W to a window above W. |
| 942 | The detail may need to be changed from Virtual to NonlinearVirtual |
| 943 | or vice-versa depending on the new P(W). */ |
| 944 | |
| 945 | /* If one window has a focus or a child with a focuspointer, skip some |
| 946 | * work and exit. */ |
| 947 | if (HasFocus(win) || FirstFocusChild(win)) |
| 948 | return; |
| 949 | |
| 950 | CoreFocusEvent(dev, FocusOut, mode, detail, win); |
| 951 | } |
| 952 | } |
| 953 | |
| 954 | /** |
| 955 | * Send FocusOut(NotifyPointer) events from the current pointer window (which |
| 956 | * is a descendant of pwin_parent) up to (excluding) pwin_parent. |
| 957 | * |
| 958 | * NotifyPointer events are only sent for the device paired with dev. |
| 959 | * |
| 960 | * If the current pointer window is a descendant of 'exclude' or an ancestor of |
| 961 | * 'exclude', no events are sent. If the current pointer IS 'exclude', events |
| 962 | * are sent! |
| 963 | */ |
| 964 | static void |
| 965 | CoreFocusOutNotifyPointerEvents(DeviceIntPtr dev, |
| 966 | WindowPtr pwin_parent, |
| 967 | WindowPtr exclude, int mode, int inclusive) |
| 968 | { |
| 969 | WindowPtr P, stopAt; |
| 970 | |
| 971 | P = PointerWin(GetMaster(dev, POINTER_OR_FLOAT)); |
| 972 | |
| 973 | if (!P) |
| 974 | return; |
| 975 | if (!IsParent(pwin_parent, P)) |
| 976 | if (!(pwin_parent == P && inclusive)) |
| 977 | return; |
| 978 | |
| 979 | if (exclude != None && exclude != PointerRootWin && |
| 980 | (IsParent(exclude, P) || IsParent(P, exclude))) |
| 981 | return; |
| 982 | |
| 983 | stopAt = (inclusive) ? pwin_parent->parent : pwin_parent; |
| 984 | |
| 985 | for (; P && P != stopAt; P = P->parent) |
| 986 | CoreFocusEvent(dev, FocusOut, mode, NotifyPointer, P); |
| 987 | } |
| 988 | |
| 989 | /** |
| 990 | * DO NOT CALL DIRECTLY. |
| 991 | * Recursion helper for CoreFocusInNotifyPointerEvents. |
| 992 | */ |
| 993 | static void |
| 994 | CoreFocusInRecurse(DeviceIntPtr dev, |
| 995 | WindowPtr win, WindowPtr stopAt, int mode, int inclusive) |
| 996 | { |
| 997 | if ((!inclusive && win == stopAt) || !win) |
| 998 | return; |
| 999 | |
| 1000 | CoreFocusInRecurse(dev, win->parent, stopAt, mode, inclusive); |
| 1001 | CoreFocusEvent(dev, FocusIn, mode, NotifyPointer, win); |
| 1002 | } |
| 1003 | |
| 1004 | /** |
| 1005 | * Send FocusIn(NotifyPointer) events from pwin_parent down to |
| 1006 | * including the current pointer window (which is a descendant of pwin_parent). |
| 1007 | * |
| 1008 | * @param pwin The pointer window. |
| 1009 | * @param exclude If the pointer window is a child of 'exclude', no events are |
| 1010 | * sent. |
| 1011 | * @param inclusive If TRUE, pwin_parent will receive the event too. |
| 1012 | */ |
| 1013 | static void |
| 1014 | CoreFocusInNotifyPointerEvents(DeviceIntPtr dev, |
| 1015 | WindowPtr pwin_parent, |
| 1016 | WindowPtr exclude, int mode, int inclusive) |
| 1017 | { |
| 1018 | WindowPtr P; |
| 1019 | |
| 1020 | P = PointerWin(GetMaster(dev, POINTER_OR_FLOAT)); |
| 1021 | |
| 1022 | if (!P || P == exclude || (pwin_parent != P && !IsParent(pwin_parent, P))) |
| 1023 | return; |
| 1024 | |
| 1025 | if (exclude != None && (IsParent(exclude, P) || IsParent(P, exclude))) |
| 1026 | return; |
| 1027 | |
| 1028 | CoreFocusInRecurse(dev, P, pwin_parent, mode, inclusive); |
| 1029 | } |
| 1030 | |
| 1031 | /** |
| 1032 | * Focus of dev moves from A to B and A neither a descendant of B nor is |
| 1033 | * B a descendant of A. |
| 1034 | */ |
| 1035 | static void |
| 1036 | CoreFocusNonLinear(DeviceIntPtr dev, WindowPtr A, WindowPtr B, int mode) |
| 1037 | { |
| 1038 | WindowPtr X = CommonAncestor(A, B); |
| 1039 | |
| 1040 | /* Case 4: |
| 1041 | A is W, B is above W |
| 1042 | |
| 1043 | Classically: The change generates a FocusOut on W with a detail of |
| 1044 | Ancestor or Nonlinear |
| 1045 | |
| 1046 | MPX: |
| 1047 | Case 3A: There is at least one other focus on W itself |
| 1048 | F(W) doesn't change, the event should be suppressed |
| 1049 | Case 3B: Otherwise, if there is at least one other focus in a |
| 1050 | descendant of W |
| 1051 | F(W) changes from W to a descendant of W. The detail field |
| 1052 | is set to Inferior |
| 1053 | Case 3C: Otherwise: |
| 1054 | The focus window moves from W to a window above W. |
| 1055 | The detail may need to be changed from Ancestor to Nonlinear or |
| 1056 | vice versa depending on the the new F(W) |
| 1057 | */ |
| 1058 | |
| 1059 | if (!HasFocus(A)) { |
| 1060 | WindowPtr child = FirstFocusChild(A); |
| 1061 | |
| 1062 | if (child) { |
| 1063 | /* NotifyPointer P-A unless P is child or below */ |
| 1064 | CoreFocusOutNotifyPointerEvents(dev, A, child, mode, FALSE); |
| 1065 | CoreFocusEvent(dev, FocusOut, mode, NotifyInferior, A); |
| 1066 | } |
| 1067 | else { |
| 1068 | /* NotifyPointer P-A */ |
| 1069 | CoreFocusOutNotifyPointerEvents(dev, A, None, mode, FALSE); |
| 1070 | CoreFocusEvent(dev, FocusOut, mode, NotifyNonlinear, A); |
| 1071 | } |
| 1072 | } |
| 1073 | |
| 1074 | CoreFocusOutEvents(dev, A, X, mode, NotifyNonlinearVirtual); |
| 1075 | |
| 1076 | /* |
| 1077 | Case 9: |
| 1078 | A is a descendant of W, B is a descendant of W |
| 1079 | |
| 1080 | Classically: No events are generated on W |
| 1081 | MPX: The focus window stays the same or moves to a different |
| 1082 | descendant of W. No events should be generated on W. |
| 1083 | |
| 1084 | Therefore, no event to X. |
| 1085 | */ |
| 1086 | |
| 1087 | CoreFocusInEvents(dev, X, B, mode, NotifyNonlinearVirtual); |
| 1088 | |
| 1089 | /* Case 2: |
| 1090 | A is above W, B=W |
| 1091 | |
| 1092 | Classically: The move generates an EnterNotify on W with a detail of |
| 1093 | Ancestor or Nonlinear |
| 1094 | |
| 1095 | MPX: |
| 1096 | Case 2A: There is at least one other focus on W itself |
| 1097 | F(W) doesn't change, so the event should be suppressed |
| 1098 | Case 2B: Otherwise, if there is at least one other focus in a |
| 1099 | descendant |
| 1100 | F(W) moves from a descendant to W. detail is changed to Inferior. |
| 1101 | Case 2C: Otherwise: |
| 1102 | F(W) changes from a window above W to W itself. |
| 1103 | The detail may need to be changed from Ancestor to Nonlinear |
| 1104 | or vice-versa depending on the previous F(W). */ |
| 1105 | |
| 1106 | if (!HasFocus(B)) { |
| 1107 | WindowPtr child = FirstFocusChild(B); |
| 1108 | |
| 1109 | if (child) { |
| 1110 | CoreFocusEvent(dev, FocusIn, mode, NotifyInferior, B); |
| 1111 | /* NotifyPointer B-P unless P is child or below. */ |
| 1112 | CoreFocusInNotifyPointerEvents(dev, B, child, mode, FALSE); |
| 1113 | } |
| 1114 | else { |
| 1115 | CoreFocusEvent(dev, FocusIn, mode, NotifyNonlinear, B); |
| 1116 | /* NotifyPointer B-P unless P is child or below. */ |
| 1117 | CoreFocusInNotifyPointerEvents(dev, B, None, mode, FALSE); |
| 1118 | } |
| 1119 | } |
| 1120 | } |
| 1121 | |
| 1122 | /** |
| 1123 | * Focus of dev moves from A to B and A is a descendant of B. |
| 1124 | */ |
| 1125 | static void |
| 1126 | CoreFocusToAncestor(DeviceIntPtr dev, WindowPtr A, WindowPtr B, int mode) |
| 1127 | { |
| 1128 | /* Case 4: |
| 1129 | A is W, B is above W |
| 1130 | |
| 1131 | Classically: The change generates a FocusOut on W with a detail of |
| 1132 | Ancestor or Nonlinear |
| 1133 | |
| 1134 | MPX: |
| 1135 | Case 3A: There is at least one other focus on W itself |
| 1136 | F(W) doesn't change, the event should be suppressed |
| 1137 | Case 3B: Otherwise, if there is at least one other focus in a |
| 1138 | descendant of W |
| 1139 | F(W) changes from W to a descendant of W. The detail field |
| 1140 | is set to Inferior |
| 1141 | Case 3C: Otherwise: |
| 1142 | The focus window moves from W to a window above W. |
| 1143 | The detail may need to be changed from Ancestor to Nonlinear or |
| 1144 | vice versa depending on the the new F(W) |
| 1145 | */ |
| 1146 | if (!HasFocus(A)) { |
| 1147 | WindowPtr child = FirstFocusChild(A); |
| 1148 | |
| 1149 | if (child) { |
| 1150 | /* NotifyPointer P-A unless P is child or below */ |
| 1151 | CoreFocusOutNotifyPointerEvents(dev, A, child, mode, FALSE); |
| 1152 | CoreFocusEvent(dev, FocusOut, mode, NotifyInferior, A); |
| 1153 | } |
| 1154 | else |
| 1155 | CoreFocusEvent(dev, FocusOut, mode, NotifyAncestor, A); |
| 1156 | } |
| 1157 | |
| 1158 | CoreFocusOutEvents(dev, A, B, mode, NotifyVirtual); |
| 1159 | |
| 1160 | /* Case 8: |
| 1161 | A is a descendant of W, B is W |
| 1162 | |
| 1163 | Classically: A FocusOut is generated on W with a detail of |
| 1164 | NotifyInferior |
| 1165 | |
| 1166 | MPX: |
| 1167 | Case 3A: There is at least one other focus on W itself |
| 1168 | F(W) doesn't change, the event should be suppressed |
| 1169 | Case 3B: Otherwise: |
| 1170 | F(W) changes from a descendant to W itself. */ |
| 1171 | |
| 1172 | if (!HasFocus(B)) { |
| 1173 | CoreFocusEvent(dev, FocusIn, mode, NotifyInferior, B); |
| 1174 | /* NotifyPointer B-P unless P is A or below. */ |
| 1175 | CoreFocusInNotifyPointerEvents(dev, B, A, mode, FALSE); |
| 1176 | } |
| 1177 | } |
| 1178 | |
| 1179 | /** |
| 1180 | * Focus of dev moves from A to B and B is a descendant of A. |
| 1181 | */ |
| 1182 | static void |
| 1183 | CoreFocusToDescendant(DeviceIntPtr dev, WindowPtr A, WindowPtr B, int mode) |
| 1184 | { |
| 1185 | /* Case 6: |
| 1186 | A is W, B is a descendant of W |
| 1187 | |
| 1188 | Classically: A FocusOut is generated on W with a detail of |
| 1189 | NotifyInferior |
| 1190 | |
| 1191 | MPX: |
| 1192 | Case 3A: There is at least one other focus on W itself |
| 1193 | F(W) doesn't change, the event should be suppressed |
| 1194 | Case 3B: Otherwise: |
| 1195 | F(W) changes from W to a descendant of W. */ |
| 1196 | |
| 1197 | if (!HasFocus(A)) { |
| 1198 | /* NotifyPointer P-A unless P is B or below */ |
| 1199 | CoreFocusOutNotifyPointerEvents(dev, A, B, mode, FALSE); |
| 1200 | CoreFocusEvent(dev, FocusOut, mode, NotifyInferior, A); |
| 1201 | } |
| 1202 | |
| 1203 | CoreFocusInEvents(dev, A, B, mode, NotifyVirtual); |
| 1204 | |
| 1205 | /* Case 2: |
| 1206 | A is above W, B=W |
| 1207 | |
| 1208 | Classically: The move generates an FocusIn on W with a detail of |
| 1209 | Ancestor or Nonlinear |
| 1210 | |
| 1211 | MPX: |
| 1212 | Case 2A: There is at least one other focus on W itself |
| 1213 | F(W) doesn't change, so the event should be suppressed |
| 1214 | Case 2B: Otherwise, if there is at least one other focus in a |
| 1215 | descendant |
| 1216 | F(W) moves from a descendant to W. detail is changed to Inferior. |
| 1217 | Case 2C: Otherwise: |
| 1218 | F(W) changes from a window above W to W itself. |
| 1219 | The detail may need to be changed from Ancestor to Nonlinear |
| 1220 | or vice-versa depending on the previous F(W). */ |
| 1221 | |
| 1222 | if (!HasFocus(B)) { |
| 1223 | WindowPtr child = FirstFocusChild(B); |
| 1224 | |
| 1225 | if (child) { |
| 1226 | CoreFocusEvent(dev, FocusIn, mode, NotifyInferior, B); |
| 1227 | /* NotifyPointer B-P unless P is child or below. */ |
| 1228 | CoreFocusInNotifyPointerEvents(dev, B, child, mode, FALSE); |
| 1229 | } |
| 1230 | else |
| 1231 | CoreFocusEvent(dev, FocusIn, mode, NotifyAncestor, B); |
| 1232 | } |
| 1233 | } |
| 1234 | |
| 1235 | static BOOL |
| 1236 | HasOtherPointer(WindowPtr win, DeviceIntPtr exclude) |
| 1237 | { |
| 1238 | int i; |
| 1239 | |
| 1240 | for (i = 0; i < MAXDEVICES; i++) |
| 1241 | if (i != exclude->id && PointerWindows[i] == win) |
| 1242 | return TRUE; |
| 1243 | |
| 1244 | return FALSE; |
| 1245 | } |
| 1246 | |
| 1247 | /** |
| 1248 | * Focus moves from PointerRoot to None or from None to PointerRoot. |
| 1249 | * Assumption: Neither A nor B are valid windows. |
| 1250 | */ |
| 1251 | static void |
| 1252 | CoreFocusPointerRootNoneSwitch(DeviceIntPtr dev, |
| 1253 | WindowPtr A, /* PointerRootWin or NoneWin */ |
| 1254 | WindowPtr B, /* NoneWin or PointerRootWin */ |
| 1255 | int mode) |
| 1256 | { |
| 1257 | WindowPtr root; |
| 1258 | int i; |
| 1259 | int nscreens = screenInfo.numScreens; |
| 1260 | |
| 1261 | #ifdef PANORAMIX |
| 1262 | if (!noPanoramiXExtension) |
| 1263 | nscreens = 1; |
| 1264 | #endif |
| 1265 | |
| 1266 | for (i = 0; i < nscreens; i++) { |
| 1267 | root = screenInfo.screens[i]->root; |
| 1268 | if (!HasOtherPointer(root, GetMaster(dev, POINTER_OR_FLOAT)) && |
| 1269 | !FirstFocusChild(root)) { |
| 1270 | /* If pointer was on PointerRootWin and changes to NoneWin, and |
| 1271 | * the pointer paired with dev is below the current root window, |
| 1272 | * do a NotifyPointer run. */ |
| 1273 | if (dev->focus && dev->focus->win == PointerRootWin && |
| 1274 | B != PointerRootWin) { |
| 1275 | WindowPtr ptrwin = PointerWin(GetMaster(dev, POINTER_OR_FLOAT)); |
| 1276 | |
| 1277 | if (ptrwin && IsParent(root, ptrwin)) |
| 1278 | CoreFocusOutNotifyPointerEvents(dev, root, None, mode, |
| 1279 | TRUE); |
| 1280 | } |
| 1281 | CoreFocusEvent(dev, FocusOut, mode, |
| 1282 | A ? NotifyPointerRoot : NotifyDetailNone, root); |
| 1283 | CoreFocusEvent(dev, FocusIn, mode, |
| 1284 | B ? NotifyPointerRoot : NotifyDetailNone, root); |
| 1285 | if (B == PointerRootWin) |
| 1286 | CoreFocusInNotifyPointerEvents(dev, root, None, mode, TRUE); |
| 1287 | } |
| 1288 | |
| 1289 | } |
| 1290 | } |
| 1291 | |
| 1292 | /** |
| 1293 | * Focus moves from window A to PointerRoot or to None. |
| 1294 | * Assumption: A is a valid window and not PointerRoot or None. |
| 1295 | */ |
| 1296 | static void |
| 1297 | CoreFocusToPointerRootOrNone(DeviceIntPtr dev, WindowPtr A, |
| 1298 | WindowPtr B, /* PointerRootWin or NoneWin */ |
| 1299 | int mode) |
| 1300 | { |
| 1301 | WindowPtr root; |
| 1302 | int i; |
| 1303 | int nscreens = screenInfo.numScreens; |
| 1304 | |
| 1305 | #ifdef PANORAMIX |
| 1306 | if (!noPanoramiXExtension) |
| 1307 | nscreens = 1; |
| 1308 | #endif |
| 1309 | |
| 1310 | if (!HasFocus(A)) { |
| 1311 | WindowPtr child = FirstFocusChild(A); |
| 1312 | |
| 1313 | if (child) { |
| 1314 | /* NotifyPointer P-A unless P is B or below */ |
| 1315 | CoreFocusOutNotifyPointerEvents(dev, A, B, mode, FALSE); |
| 1316 | CoreFocusEvent(dev, FocusOut, mode, NotifyInferior, A); |
| 1317 | } |
| 1318 | else { |
| 1319 | /* NotifyPointer P-A */ |
| 1320 | CoreFocusOutNotifyPointerEvents(dev, A, None, mode, FALSE); |
| 1321 | CoreFocusEvent(dev, FocusOut, mode, NotifyNonlinear, A); |
| 1322 | } |
| 1323 | } |
| 1324 | |
| 1325 | /* NullWindow means we include the root window */ |
| 1326 | CoreFocusOutEvents(dev, A, NullWindow, mode, NotifyNonlinearVirtual); |
| 1327 | |
| 1328 | for (i = 0; i < nscreens; i++) { |
| 1329 | root = screenInfo.screens[i]->root; |
| 1330 | if (!HasFocus(root) && !FirstFocusChild(root)) { |
| 1331 | CoreFocusEvent(dev, FocusIn, mode, |
| 1332 | B ? NotifyPointerRoot : NotifyDetailNone, root); |
| 1333 | if (B == PointerRootWin) |
| 1334 | CoreFocusInNotifyPointerEvents(dev, root, None, mode, TRUE); |
| 1335 | } |
| 1336 | } |
| 1337 | } |
| 1338 | |
| 1339 | /** |
| 1340 | * Focus moves from PointerRoot or None to a window B. |
| 1341 | * Assumption: B is a valid window and not PointerRoot or None. |
| 1342 | */ |
| 1343 | static void |
| 1344 | CoreFocusFromPointerRootOrNone(DeviceIntPtr dev, |
| 1345 | WindowPtr A, /* PointerRootWin or NoneWin */ |
| 1346 | WindowPtr B, int mode) |
| 1347 | { |
| 1348 | WindowPtr root; |
| 1349 | int i; |
| 1350 | int nscreens = screenInfo.numScreens; |
| 1351 | |
| 1352 | #ifdef PANORAMIX |
| 1353 | if (!noPanoramiXExtension) |
| 1354 | nscreens = 1; |
| 1355 | #endif |
| 1356 | |
| 1357 | for (i = 0; i < nscreens; i++) { |
| 1358 | root = screenInfo.screens[i]->root; |
| 1359 | if (!HasFocus(root) && !FirstFocusChild(root)) { |
| 1360 | /* If pointer was on PointerRootWin and changes to NoneWin, and |
| 1361 | * the pointer paired with dev is below the current root window, |
| 1362 | * do a NotifyPointer run. */ |
| 1363 | if (dev->focus && dev->focus->win == PointerRootWin && |
| 1364 | B != PointerRootWin) { |
| 1365 | WindowPtr ptrwin = PointerWin(GetMaster(dev, POINTER_OR_FLOAT)); |
| 1366 | |
| 1367 | if (ptrwin) |
| 1368 | CoreFocusOutNotifyPointerEvents(dev, root, None, mode, |
| 1369 | TRUE); |
| 1370 | } |
| 1371 | CoreFocusEvent(dev, FocusOut, mode, |
| 1372 | A ? NotifyPointerRoot : NotifyDetailNone, root); |
| 1373 | } |
| 1374 | } |
| 1375 | |
| 1376 | root = B; /* get B's root window */ |
| 1377 | while (root->parent) |
| 1378 | root = root->parent; |
| 1379 | |
| 1380 | if (B != root) { |
| 1381 | CoreFocusEvent(dev, FocusIn, mode, NotifyNonlinearVirtual, root); |
| 1382 | CoreFocusInEvents(dev, root, B, mode, NotifyNonlinearVirtual); |
| 1383 | } |
| 1384 | |
| 1385 | if (!HasFocus(B)) { |
| 1386 | WindowPtr child = FirstFocusChild(B); |
| 1387 | |
| 1388 | if (child) { |
| 1389 | CoreFocusEvent(dev, FocusIn, mode, NotifyInferior, B); |
| 1390 | /* NotifyPointer B-P unless P is child or below. */ |
| 1391 | CoreFocusInNotifyPointerEvents(dev, B, child, mode, FALSE); |
| 1392 | } |
| 1393 | else { |
| 1394 | CoreFocusEvent(dev, FocusIn, mode, NotifyNonlinear, B); |
| 1395 | /* NotifyPointer B-P unless P is child or below. */ |
| 1396 | CoreFocusInNotifyPointerEvents(dev, B, None, mode, FALSE); |
| 1397 | } |
| 1398 | } |
| 1399 | |
| 1400 | } |
| 1401 | |
| 1402 | static void |
| 1403 | CoreFocusEvents(DeviceIntPtr dev, WindowPtr from, WindowPtr to, int mode) |
| 1404 | { |
| 1405 | if (!IsMaster(dev)) |
| 1406 | return; |
| 1407 | |
| 1408 | SetFocusOut(dev); |
| 1409 | |
| 1410 | if (((to == NullWindow) || (to == PointerRootWin)) && |
| 1411 | ((from == NullWindow) || (from == PointerRootWin))) |
| 1412 | CoreFocusPointerRootNoneSwitch(dev, from, to, mode); |
| 1413 | else if ((to == NullWindow) || (to == PointerRootWin)) |
| 1414 | CoreFocusToPointerRootOrNone(dev, from, to, mode); |
| 1415 | else if ((from == NullWindow) || (from == PointerRootWin)) |
| 1416 | CoreFocusFromPointerRootOrNone(dev, from, to, mode); |
| 1417 | else if (IsParent(from, to)) |
| 1418 | CoreFocusToDescendant(dev, from, to, mode); |
| 1419 | else if (IsParent(to, from)) |
| 1420 | CoreFocusToAncestor(dev, from, to, mode); |
| 1421 | else |
| 1422 | CoreFocusNonLinear(dev, from, to, mode); |
| 1423 | |
| 1424 | SetFocusIn(dev, to); |
| 1425 | } |
| 1426 | |
| 1427 | static void |
| 1428 | DeviceFocusEvents(DeviceIntPtr dev, WindowPtr from, WindowPtr to, int mode) |
| 1429 | { |
| 1430 | int out, in; /* for holding details for to/from |
| 1431 | PointerRoot/None */ |
| 1432 | int i; |
| 1433 | int nscreens = screenInfo.numScreens; |
| 1434 | SpritePtr sprite = dev->spriteInfo->sprite; |
| 1435 | |
| 1436 | if (from == to) |
| 1437 | return; |
| 1438 | out = (from == NoneWin) ? NotifyDetailNone : NotifyPointerRoot; |
| 1439 | in = (to == NoneWin) ? NotifyDetailNone : NotifyPointerRoot; |
| 1440 | /* wrong values if neither, but then not referenced */ |
| 1441 | |
| 1442 | #ifdef PANORAMIX |
| 1443 | if (!noPanoramiXExtension) |
| 1444 | nscreens = 1; |
| 1445 | #endif |
| 1446 | |
| 1447 | if ((to == NullWindow) || (to == PointerRootWin)) { |
| 1448 | if ((from == NullWindow) || (from == PointerRootWin)) { |
| 1449 | if (from == PointerRootWin) |
| 1450 | DeviceFocusOutEvents(dev, sprite->win, |
| 1451 | GetCurrentRootWindow(dev), mode, |
| 1452 | NotifyPointer); |
| 1453 | /* Notify all the roots */ |
| 1454 | for (i = 0; i < nscreens; i++) |
| 1455 | DeviceFocusEvent(dev, XI_FocusOut, mode, out, |
| 1456 | screenInfo.screens[i]->root); |
| 1457 | } |
| 1458 | else { |
| 1459 | if (IsParent(from, sprite->win)) |
| 1460 | DeviceFocusOutEvents(dev, sprite->win, from, mode, |
| 1461 | NotifyPointer); |
| 1462 | DeviceFocusEvent(dev, XI_FocusOut, mode, NotifyNonlinear, from); |
| 1463 | /* next call catches the root too, if the screen changed */ |
| 1464 | DeviceFocusOutEvents(dev, from, NullWindow, mode, |
| 1465 | NotifyNonlinearVirtual); |
| 1466 | } |
| 1467 | /* Notify all the roots */ |
| 1468 | for (i = 0; i < nscreens; i++) |
| 1469 | DeviceFocusEvent(dev, XI_FocusIn, mode, in, |
| 1470 | screenInfo.screens[i]->root); |
| 1471 | if (to == PointerRootWin) { |
| 1472 | DeviceFocusInEvents(dev, GetCurrentRootWindow(dev), sprite->win, |
| 1473 | mode, NotifyPointer); |
| 1474 | DeviceFocusEvent(dev, XI_FocusIn, mode, NotifyPointer, sprite->win); |
| 1475 | } |
| 1476 | } |
| 1477 | else { |
| 1478 | if ((from == NullWindow) || (from == PointerRootWin)) { |
| 1479 | if (from == PointerRootWin) |
| 1480 | DeviceFocusOutEvents(dev, sprite->win, |
| 1481 | GetCurrentRootWindow(dev), mode, |
| 1482 | NotifyPointer); |
| 1483 | for (i = 0; i < nscreens; i++) |
| 1484 | DeviceFocusEvent(dev, XI_FocusOut, mode, out, |
| 1485 | screenInfo.screens[i]->root); |
| 1486 | if (to->parent != NullWindow) |
| 1487 | DeviceFocusInEvents(dev, GetCurrentRootWindow(dev), to, mode, |
| 1488 | NotifyNonlinearVirtual); |
| 1489 | DeviceFocusEvent(dev, XI_FocusIn, mode, NotifyNonlinear, to); |
| 1490 | if (IsParent(to, sprite->win)) |
| 1491 | DeviceFocusInEvents(dev, to, sprite->win, mode, NotifyPointer); |
| 1492 | } |
| 1493 | else { |
| 1494 | if (IsParent(to, from)) { |
| 1495 | DeviceFocusEvent(dev, XI_FocusOut, mode, NotifyAncestor, from); |
| 1496 | DeviceFocusOutEvents(dev, from, to, mode, NotifyVirtual); |
| 1497 | DeviceFocusEvent(dev, XI_FocusIn, mode, NotifyInferior, to); |
| 1498 | if ((IsParent(to, sprite->win)) && |
| 1499 | (sprite->win != from) && |
| 1500 | (!IsParent(from, sprite->win)) && |
| 1501 | (!IsParent(sprite->win, from))) |
| 1502 | DeviceFocusInEvents(dev, to, sprite->win, mode, |
| 1503 | NotifyPointer); |
| 1504 | } |
| 1505 | else if (IsParent(from, to)) { |
| 1506 | if ((IsParent(from, sprite->win)) && |
| 1507 | (sprite->win != from) && |
| 1508 | (!IsParent(to, sprite->win)) && |
| 1509 | (!IsParent(sprite->win, to))) |
| 1510 | DeviceFocusOutEvents(dev, sprite->win, from, mode, |
| 1511 | NotifyPointer); |
| 1512 | DeviceFocusEvent(dev, XI_FocusOut, mode, NotifyInferior, from); |
| 1513 | DeviceFocusInEvents(dev, from, to, mode, NotifyVirtual); |
| 1514 | DeviceFocusEvent(dev, XI_FocusIn, mode, NotifyAncestor, to); |
| 1515 | } |
| 1516 | else { |
| 1517 | /* neither from or to is child of other */ |
| 1518 | WindowPtr common = CommonAncestor(to, from); |
| 1519 | |
| 1520 | /* common == NullWindow ==> different screens */ |
| 1521 | if (IsParent(from, sprite->win)) |
| 1522 | DeviceFocusOutEvents(dev, sprite->win, from, mode, |
| 1523 | NotifyPointer); |
| 1524 | DeviceFocusEvent(dev, XI_FocusOut, mode, NotifyNonlinear, from); |
| 1525 | if (from->parent != NullWindow) |
| 1526 | DeviceFocusOutEvents(dev, from, common, mode, |
| 1527 | NotifyNonlinearVirtual); |
| 1528 | if (to->parent != NullWindow) |
| 1529 | DeviceFocusInEvents(dev, common, to, mode, |
| 1530 | NotifyNonlinearVirtual); |
| 1531 | DeviceFocusEvent(dev, XI_FocusIn, mode, NotifyNonlinear, to); |
| 1532 | if (IsParent(to, sprite->win)) |
| 1533 | DeviceFocusInEvents(dev, to, sprite->win, mode, |
| 1534 | NotifyPointer); |
| 1535 | } |
| 1536 | } |
| 1537 | } |
| 1538 | } |
| 1539 | |
| 1540 | /** |
| 1541 | * Figure out if focus events are necessary and send them to the |
| 1542 | * appropriate windows. |
| 1543 | * |
| 1544 | * @param from Window the focus moved out of. |
| 1545 | * @param to Window the focus moved into. |
| 1546 | */ |
| 1547 | void |
| 1548 | DoFocusEvents(DeviceIntPtr pDev, WindowPtr from, WindowPtr to, int mode) |
| 1549 | { |
| 1550 | if (!IsKeyboardDevice(pDev)) |
| 1551 | return; |
| 1552 | |
| 1553 | if (from == to) |
| 1554 | return; |
| 1555 | |
| 1556 | CoreFocusEvents(pDev, from, to, mode); |
| 1557 | DeviceFocusEvents(pDev, from, to, mode); |
| 1558 | } |