1 /* 2 * Copyright 2004-2009, Haiku. 3 * Distributed under the terms of the MIT License. 4 * 5 * Authors: 6 * Stefano Ceccherini (stefano.ceccherini@gmail.com) 7 * Jérôme Duval 8 * Axel Dörfler, axeld@pinc-software.de 9 * Clemens Zeidler, haiku@clemens-zeidler.de 10 * Stephan Aßmus, superstippi@gmx.de 11 */ 12 13 14 #include "MouseInputDevice.h" 15 16 #include <errno.h> 17 #include <new> 18 #include <stdio.h> 19 #include <stdlib.h> 20 #include <unistd.h> 21 22 #include <Autolock.h> 23 #include <Debug.h> 24 #include <Directory.h> 25 #include <Entry.h> 26 #include <File.h> 27 #include <FindDirectory.h> 28 #include <NodeMonitor.h> 29 #include <Path.h> 30 #include <String.h> 31 #include <View.h> 32 33 #include "kb_mouse_settings.h" 34 #include "kb_mouse_driver.h" 35 #include "touchpad_settings.h" 36 37 38 #undef TRACE 39 //#define TRACE_MOUSE_DEVICE 40 #ifdef TRACE_MOUSE_DEVICE 41 42 class FunctionTracer { 43 public: 44 FunctionTracer(const void* pointer, const char* className, 45 const char* functionName, 46 int32& depth) 47 : fFunctionName(), 48 fPrepend(), 49 fFunctionDepth(depth), 50 fPointer(pointer) 51 { 52 fFunctionDepth++; 53 fPrepend.Append(' ', fFunctionDepth * 2); 54 fFunctionName << className << "::" << functionName << "()"; 55 56 debug_printf("%p -> %s%s {\n", fPointer, fPrepend.String(), 57 fFunctionName.String()); 58 } 59 60 ~FunctionTracer() 61 { 62 debug_printf("%p -> %s}\n", fPointer, fPrepend.String()); 63 fFunctionDepth--; 64 } 65 66 private: 67 BString fFunctionName; 68 BString fPrepend; 69 int32& fFunctionDepth; 70 const void* fPointer; 71 }; 72 73 74 static int32 sFunctionDepth = -1; 75 # define MD_CALLED(x...) FunctionTracer _ft(this, "MouseDevice", \ 76 __FUNCTION__, sFunctionDepth) 77 # define MID_CALLED(x...) FunctionTracer _ft(this, "MouseInputDevice", \ 78 __FUNCTION__, sFunctionDepth) 79 # define TRACE(x...) do { BString _to; \ 80 _to.Append(' ', (sFunctionDepth + 1) * 2); \ 81 debug_printf("%p -> %s", this, _to.String()); \ 82 debug_printf(x); } while (0) 83 # define LOG_EVENT(text...) do {} while (0) 84 # define LOG_ERR(text...) TRACE(text) 85 #else 86 # define TRACE(x...) do {} while (0) 87 # define MD_CALLED(x...) TRACE(x) 88 # define MID_CALLED(x...) TRACE(x) 89 # define LOG_ERR(x...) debug_printf(x) 90 # define LOG_EVENT(x...) TRACE(x) 91 #endif 92 93 94 const static uint32 kMouseThreadPriority = B_FIRST_REAL_TIME_PRIORITY + 4; 95 const static char* kMouseDevicesDirectory = "/dev/input/mouse"; 96 const static char* kTouchpadDevicesDirectory = "/dev/input/touchpad"; 97 98 99 class MouseDevice { 100 public: 101 MouseDevice(MouseInputDevice& target, 102 const char* path); 103 ~MouseDevice(); 104 105 status_t Start(); 106 void Stop(); 107 108 status_t UpdateSettings(); 109 status_t UpdateTouchpadSettings(const BMessage* message); 110 111 const char* Path() const { return fPath.String(); } 112 input_device_ref* DeviceRef() { return &fDeviceRef; } 113 114 private: 115 char* _BuildShortName() const; 116 117 static status_t _ControlThreadEntry(void* arg); 118 void _ControlThread(); 119 void _ControlThreadCleanup(); 120 void _UpdateSettings(); 121 122 status_t _GetTouchpadSettingsPath(BPath& path); 123 status_t _ReadTouchpadSettingsMsg(BMessage* message); 124 status_t _UpdateTouchpadSettings(); 125 126 BMessage* _BuildMouseMessage(uint32 what, 127 uint64 when, uint32 buttons, 128 int32 deltaX, int32 deltaY) const; 129 void _ComputeAcceleration( 130 const mouse_movement& movements, 131 int32& deltaX, int32& deltaY, 132 float& historyDeltaX, 133 float& historyDeltaY) const; 134 uint32 _RemapButtons(uint32 buttons) const; 135 136 private: 137 MouseInputDevice& fTarget; 138 BString fPath; 139 int fDevice; 140 141 input_device_ref fDeviceRef; 142 mouse_settings fSettings; 143 bool fDeviceRemapsButtons; 144 145 thread_id fThread; 146 volatile bool fActive; 147 volatile bool fUpdateSettings; 148 149 bool fIsTouchpad; 150 touchpad_settings fTouchpadSettings; 151 BMessage* fTouchpadSettingsMessage; 152 BLocker fTouchpadSettingsLock; 153 }; 154 155 156 extern "C" BInputServerDevice* 157 instantiate_input_device() 158 { 159 return new(std::nothrow) MouseInputDevice(); 160 } 161 162 163 // #pragma mark - 164 165 166 MouseDevice::MouseDevice(MouseInputDevice& target, const char* driverPath) 167 : 168 fTarget(target), 169 fPath(driverPath), 170 fDevice(-1), 171 fDeviceRemapsButtons(false), 172 fThread(-1), 173 fActive(false), 174 fUpdateSettings(false), 175 fIsTouchpad(false), 176 fTouchpadSettingsMessage(NULL), 177 fTouchpadSettingsLock("Touchpad settings lock") 178 { 179 MD_CALLED(); 180 181 fDeviceRef.name = _BuildShortName(); 182 fDeviceRef.type = B_POINTING_DEVICE; 183 fDeviceRef.cookie = this; 184 185 #ifdef HAIKU_TARGET_PLATFORM_HAIKU 186 fSettings.map.button[0] = B_PRIMARY_MOUSE_BUTTON; 187 fSettings.map.button[1] = B_SECONDARY_MOUSE_BUTTON; 188 fSettings.map.button[2] = B_TERTIARY_MOUSE_BUTTON; 189 #endif 190 }; 191 192 193 MouseDevice::~MouseDevice() 194 { 195 MD_CALLED(); 196 TRACE("delete\n"); 197 198 if (fActive) 199 Stop(); 200 201 free(fDeviceRef.name); 202 delete fTouchpadSettingsMessage; 203 } 204 205 206 status_t 207 MouseDevice::Start() 208 { 209 MD_CALLED(); 210 211 fDevice = open(fPath.String(), O_RDWR); 212 // let the control thread handle any error on opening the device 213 214 char threadName[B_OS_NAME_LENGTH]; 215 snprintf(threadName, B_OS_NAME_LENGTH, "%s watcher", fDeviceRef.name); 216 217 fThread = spawn_thread(_ControlThreadEntry, threadName, 218 kMouseThreadPriority, (void*)this); 219 220 status_t status; 221 if (fThread < B_OK) 222 status = fThread; 223 else { 224 fActive = true; 225 status = resume_thread(fThread); 226 } 227 228 if (status < B_OK) { 229 LOG_ERR("%s: can't spawn/resume watching thread: %s\n", 230 fDeviceRef.name, strerror(status)); 231 close(fDevice); 232 return status; 233 } 234 235 return fDevice >= 0 ? B_OK : B_ERROR; 236 } 237 238 239 void 240 MouseDevice::Stop() 241 { 242 MD_CALLED(); 243 244 fActive = false; 245 // this will stop the thread as soon as it reads the next packet 246 247 close(fDevice); 248 fDevice = -1; 249 250 if (fThread >= B_OK) { 251 // unblock the thread, which might wait on a semaphore. 252 suspend_thread(fThread); 253 resume_thread(fThread); 254 255 status_t dummy; 256 wait_for_thread(fThread, &dummy); 257 } 258 } 259 260 261 status_t 262 MouseDevice::UpdateSettings() 263 { 264 MD_CALLED(); 265 266 if (fThread < 0) 267 return B_ERROR; 268 269 // trigger updating the settings in the control thread 270 fUpdateSettings = true; 271 272 return B_OK; 273 } 274 275 276 status_t 277 MouseDevice::UpdateTouchpadSettings(const BMessage* message) 278 { 279 if (!fIsTouchpad) 280 return B_BAD_TYPE; 281 if (fThread < 0) 282 return B_ERROR; 283 284 BAutolock _(fTouchpadSettingsLock); 285 286 // trigger updating the settings in the control thread 287 fUpdateSettings = true; 288 289 delete fTouchpadSettingsMessage; 290 fTouchpadSettingsMessage = new BMessage(*message); 291 292 return B_OK; 293 } 294 295 296 char* 297 MouseDevice::_BuildShortName() const 298 { 299 BString string(fPath); 300 BString name; 301 302 int32 slash = string.FindLast("/"); 303 string.CopyInto(name, slash + 1, string.Length() - slash); 304 int32 index = atoi(name.String()) + 1; 305 306 int32 previousSlash = string.FindLast("/", slash); 307 string.CopyInto(name, previousSlash + 1, slash - previousSlash - 1); 308 309 if (name == "ps2") 310 name = "PS/2"; 311 else 312 name.Capitalize(); 313 314 if (string.FindFirst("touchpad") >= 0) { 315 name << " Touchpad "; 316 } else { 317 if (string.FindFirst("intelli") >= 0) 318 name.Prepend("Extended "); 319 320 name << " Mouse "; 321 } 322 name << index; 323 324 return strdup(name.String()); 325 } 326 327 328 // #pragma mark - control thread 329 330 331 status_t 332 MouseDevice::_ControlThreadEntry(void* arg) 333 { 334 MouseDevice* device = (MouseDevice*)arg; 335 device->_ControlThread(); 336 return B_OK; 337 } 338 339 340 void 341 MouseDevice::_ControlThread() 342 { 343 MD_CALLED(); 344 345 if (fDevice < 0) { 346 _ControlThreadCleanup(); 347 // TOAST! 348 return; 349 } 350 351 // touchpad settings 352 if (ioctl(fDevice, MS_IS_TOUCHPAD, NULL) == B_OK) { 353 TRACE("is touchpad %s\n", fPath.String()); 354 fIsTouchpad = true; 355 356 fTouchpadSettings = kDefaultTouchpadSettings; 357 358 BPath path; 359 status_t status = _GetTouchpadSettingsPath(path); 360 BFile settingsFile(path.Path(), B_READ_ONLY); 361 if (status == B_OK && settingsFile.InitCheck() == B_OK) { 362 if (settingsFile.Read(&fTouchpadSettings, sizeof(touchpad_settings)) 363 != sizeof(touchpad_settings)) { 364 TRACE("failed to load settings\n"); 365 } 366 } 367 _UpdateTouchpadSettings(); 368 } 369 370 _UpdateSettings(); 371 372 uint32 lastButtons = 0; 373 float historyDeltaX = 0.0; 374 float historyDeltaY = 0.0; 375 376 static const bigtime_t kTransferDelay = 1000000 / 125; 377 // 125 transfers per second should be more than enough 378 #define USE_REGULAR_INTERVAL 1 379 #if USE_REGULAR_INTERVAL 380 bigtime_t nextTransferTime = system_time() + kTransferDelay; 381 #endif 382 383 while (fActive) { 384 mouse_movement movements; 385 386 #if USE_REGULAR_INTERVAL 387 snooze_until(nextTransferTime, B_SYSTEM_TIMEBASE); 388 nextTransferTime += kTransferDelay; 389 #endif 390 391 if (ioctl(fDevice, MS_READ, &movements) != B_OK) { 392 _ControlThreadCleanup(); 393 // TOAST! 394 return; 395 } 396 397 // take care of updating the settings first, if necessary 398 if (fUpdateSettings) { 399 fUpdateSettings = false; 400 if (fIsTouchpad) { 401 BAutolock _(fTouchpadSettingsLock); 402 if (fTouchpadSettingsMessage) { 403 _ReadTouchpadSettingsMsg(fTouchpadSettingsMessage); 404 _UpdateTouchpadSettings(); 405 delete fTouchpadSettingsMessage; 406 fTouchpadSettingsMessage = NULL; 407 } else 408 _UpdateSettings(); 409 } else 410 _UpdateSettings(); 411 } 412 413 uint32 buttons = lastButtons ^ movements.buttons; 414 415 uint32 remappedButtons = _RemapButtons(movements.buttons); 416 int32 deltaX, deltaY; 417 _ComputeAcceleration(movements, deltaX, deltaY, historyDeltaX, 418 historyDeltaY); 419 420 LOG_EVENT("%s: buttons: 0x%lx, x: %ld, y: %ld, clicks:%ld, " 421 "wheel_x:%ld, wheel_y:%ld\n", 422 fDeviceRef.name, movements.buttons, 423 movements.xdelta, movements.ydelta, movements.clicks, 424 movements.wheel_xdelta, movements.wheel_ydelta); 425 LOG_EVENT("%s: x: %ld, y: %ld (%.4f, %.4f)\n", fDeviceRef.name, 426 deltaX, deltaY, historyDeltaX, historyDeltaY); 427 428 // Send single messages for each event 429 430 if (buttons != 0) { 431 bool pressedButton = (buttons & movements.buttons) > 0; 432 BMessage* message = _BuildMouseMessage( 433 pressedButton ? B_MOUSE_DOWN : B_MOUSE_UP, 434 movements.timestamp, remappedButtons, deltaX, deltaY); 435 if (message != NULL) { 436 if (pressedButton) { 437 message->AddInt32("clicks", movements.clicks); 438 LOG_EVENT("B_MOUSE_DOWN\n"); 439 } else 440 LOG_EVENT("B_MOUSE_UP\n"); 441 442 fTarget.EnqueueMessage(message); 443 lastButtons = movements.buttons; 444 } 445 } 446 447 if (movements.xdelta != 0 || movements.ydelta != 0) { 448 BMessage* message = _BuildMouseMessage(B_MOUSE_MOVED, 449 movements.timestamp, remappedButtons, deltaX, deltaY); 450 if (message != NULL) 451 fTarget.EnqueueMessage(message); 452 } 453 454 if ((movements.wheel_ydelta != 0) || (movements.wheel_xdelta != 0)) { 455 BMessage* message = new BMessage(B_MOUSE_WHEEL_CHANGED); 456 if (message == NULL) 457 continue; 458 459 if (message->AddInt64("when", movements.timestamp) == B_OK 460 && message->AddFloat("be:wheel_delta_x", movements.wheel_xdelta) == B_OK 461 && message->AddFloat("be:wheel_delta_y", movements.wheel_ydelta) == B_OK) 462 fTarget.EnqueueMessage(message); 463 else 464 delete message; 465 } 466 467 #if !USE_REGULAR_INTERVAL 468 snooze(kTransferDelay); 469 #endif 470 } 471 } 472 473 474 void 475 MouseDevice::_ControlThreadCleanup() 476 { 477 // NOTE: Only executed when the control thread detected an error 478 // and from within the control thread! 479 480 if (fActive) { 481 fThread = -1; 482 fTarget._RemoveDevice(fPath.String()); 483 } else { 484 // In case active is already false, another thread 485 // waits for this thread to quit, and may already hold 486 // locks that _RemoveDevice() wants to acquire. In another 487 // words, the device is already being removed, so we simply 488 // quit here. 489 } 490 } 491 492 493 void 494 MouseDevice::_UpdateSettings() 495 { 496 MD_CALLED(); 497 498 // retrieve current values 499 500 if (get_mouse_map(&fSettings.map) != B_OK) 501 LOG_ERR("error when get_mouse_map\n"); 502 else { 503 fDeviceRemapsButtons 504 = ioctl(fDevice, MS_SET_MAP, &fSettings.map) == B_OK; 505 } 506 507 if (get_click_speed(&fSettings.click_speed) != B_OK) 508 LOG_ERR("error when get_click_speed\n"); 509 else 510 ioctl(fDevice, MS_SET_CLICKSPEED, &fSettings.click_speed); 511 512 if (get_mouse_speed(&fSettings.accel.speed) != B_OK) 513 LOG_ERR("error when get_mouse_speed\n"); 514 else { 515 if (get_mouse_acceleration(&fSettings.accel.accel_factor) != B_OK) 516 LOG_ERR("error when get_mouse_acceleration\n"); 517 else { 518 mouse_accel accel; 519 ioctl(fDevice, MS_GET_ACCEL, &accel); 520 accel.speed = fSettings.accel.speed; 521 accel.accel_factor = fSettings.accel.accel_factor; 522 ioctl(fDevice, MS_SET_ACCEL, &fSettings.accel); 523 } 524 } 525 526 if (get_mouse_type(&fSettings.type) != B_OK) 527 LOG_ERR("error when get_mouse_type\n"); 528 else 529 ioctl(fDevice, MS_SET_TYPE, &fSettings.type); 530 } 531 532 533 status_t 534 MouseDevice::_GetTouchpadSettingsPath(BPath& path) 535 { 536 status_t status = find_directory(B_USER_SETTINGS_DIRECTORY, &path); 537 if (status < B_OK) 538 return status; 539 return path.Append(TOUCHPAD_SETTINGS_FILE); 540 } 541 542 543 status_t 544 MouseDevice::_ReadTouchpadSettingsMsg(BMessage* message) 545 { 546 message->FindBool("scroll_twofinger", 547 &(fTouchpadSettings.scroll_twofinger)); 548 message->FindBool("scroll_multifinger", 549 &(fTouchpadSettings.scroll_multifinger)); 550 message->FindFloat("scroll_rightrange", 551 &(fTouchpadSettings.scroll_rightrange)); 552 message->FindFloat("scroll_bottomrange", 553 &(fTouchpadSettings.scroll_bottomrange)); 554 message->FindInt16("scroll_xstepsize", 555 (int16*)&(fTouchpadSettings.scroll_xstepsize)); 556 message->FindInt16("scroll_ystepsize", 557 (int16*)&(fTouchpadSettings.scroll_ystepsize)); 558 message->FindInt8("scroll_acceleration", 559 (int8*)&(fTouchpadSettings.scroll_acceleration)); 560 message->FindInt8("tapgesture_sensibility", 561 (int8*)&(fTouchpadSettings.tapgesture_sensibility)); 562 563 return B_OK; 564 } 565 566 567 status_t 568 MouseDevice::_UpdateTouchpadSettings() 569 { 570 if (fIsTouchpad) { 571 ioctl(fDevice, MS_SET_TOUCHPAD_SETTINGS, &fTouchpadSettings); 572 return B_OK; 573 } 574 return B_ERROR; 575 } 576 577 578 BMessage* 579 MouseDevice::_BuildMouseMessage(uint32 what, uint64 when, uint32 buttons, 580 int32 deltaX, int32 deltaY) const 581 { 582 BMessage* message = new BMessage(what); 583 if (message == NULL) 584 return NULL; 585 586 if (message->AddInt64("when", when) < B_OK 587 || message->AddInt32("buttons", buttons) < B_OK 588 || message->AddInt32("x", deltaX) < B_OK 589 || message->AddInt32("y", deltaY) < B_OK) { 590 delete message; 591 return NULL; 592 } 593 594 return message; 595 } 596 597 598 void 599 MouseDevice::_ComputeAcceleration(const mouse_movement& movements, 600 int32& _deltaX, int32& _deltaY, float& historyDeltaX, 601 float& historyDeltaY) const 602 { 603 // basic mouse speed 604 float deltaX = (float)movements.xdelta * fSettings.accel.speed / 65536.0 605 + historyDeltaX; 606 float deltaY = (float)movements.ydelta * fSettings.accel.speed / 65536.0 607 + historyDeltaY; 608 609 // acceleration 610 double acceleration = 1; 611 if (fSettings.accel.accel_factor) { 612 acceleration = 1 + sqrt(deltaX * deltaX + deltaY * deltaY) 613 * fSettings.accel.accel_factor / 524288.0; 614 } 615 616 deltaX *= acceleration; 617 deltaY *= acceleration; 618 619 if (deltaX >= 0) 620 _deltaX = (int32)floorf(deltaX); 621 else 622 _deltaX = (int32)ceilf(deltaX); 623 624 if (deltaY >= 0) 625 _deltaY = (int32)floorf(deltaY); 626 else 627 _deltaY = (int32)ceilf(deltaY); 628 629 historyDeltaX = deltaX - _deltaX; 630 historyDeltaY = deltaY - _deltaY; 631 } 632 633 634 uint32 635 MouseDevice::_RemapButtons(uint32 buttons) const 636 { 637 if (fDeviceRemapsButtons) 638 return buttons; 639 640 uint32 newButtons = 0; 641 for (int32 i = 0; buttons; i++) { 642 if (buttons & 0x1) { 643 #if defined(HAIKU_TARGET_PLATFORM_HAIKU) || defined(HAIKU_TARGET_PLATFORM_DANO) 644 newButtons |= fSettings.map.button[i]; 645 #else 646 if (i == 0) 647 newButtons |= fSettings.map.left; 648 if (i == 1) 649 newButtons |= fSettings.map.right; 650 if (i == 2) 651 newButtons |= fSettings.map.middle; 652 #endif 653 } 654 buttons >>= 1; 655 } 656 657 return newButtons; 658 } 659 660 661 // #pragma mark - 662 663 664 MouseInputDevice::MouseInputDevice() 665 : 666 fDevices(2, true), 667 fDeviceListLock("MouseInputDevice list") 668 { 669 MID_CALLED(); 670 671 StartMonitoringDevice(kMouseDevicesDirectory); 672 StartMonitoringDevice(kTouchpadDevicesDirectory); 673 _RecursiveScan(kMouseDevicesDirectory); 674 _RecursiveScan(kTouchpadDevicesDirectory); 675 } 676 677 678 MouseInputDevice::~MouseInputDevice() 679 { 680 MID_CALLED(); 681 682 StopMonitoringDevice(kTouchpadDevicesDirectory); 683 StopMonitoringDevice(kMouseDevicesDirectory); 684 fDevices.MakeEmpty(); 685 } 686 687 688 status_t 689 MouseInputDevice::InitCheck() 690 { 691 MID_CALLED(); 692 693 return BInputServerDevice::InitCheck(); 694 } 695 696 697 status_t 698 MouseInputDevice::Start(const char* name, void* cookie) 699 { 700 MID_CALLED(); 701 702 MouseDevice* device = (MouseDevice*)cookie; 703 704 return device->Start(); 705 } 706 707 708 status_t 709 MouseInputDevice::Stop(const char* name, void* cookie) 710 { 711 TRACE("%s(%s)\n", __PRETTY_FUNCTION__, name); 712 713 MouseDevice* device = (MouseDevice*)cookie; 714 device->Stop(); 715 716 return B_OK; 717 } 718 719 720 status_t 721 MouseInputDevice::Control(const char* name, void* cookie, 722 uint32 command, BMessage* message) 723 { 724 TRACE("%s(%s, code: %lu)\n", __PRETTY_FUNCTION__, name, command); 725 726 MouseDevice* device = (MouseDevice*)cookie; 727 728 if (command == B_NODE_MONITOR) 729 return _HandleMonitor(message); 730 731 if (command == MS_SET_TOUCHPAD_SETTINGS) 732 return device->UpdateTouchpadSettings(message); 733 734 if (command >= B_MOUSE_TYPE_CHANGED 735 && command <= B_MOUSE_ACCELERATION_CHANGED) 736 return device->UpdateSettings(); 737 738 return B_BAD_VALUE; 739 } 740 741 742 status_t 743 MouseInputDevice::_HandleMonitor(BMessage* message) 744 { 745 MID_CALLED(); 746 747 const char* path; 748 int32 opcode; 749 if (message->FindInt32("opcode", &opcode) != B_OK 750 || (opcode != B_ENTRY_CREATED && opcode != B_ENTRY_REMOVED) 751 || message->FindString("path", &path) != B_OK) 752 return B_BAD_VALUE; 753 754 if (opcode == B_ENTRY_CREATED) 755 return _AddDevice(path); 756 757 #if 0 758 return _RemoveDevice(path); 759 #else 760 // Don't handle B_ENTRY_REMOVED, let the control thread take care of it. 761 return B_OK; 762 #endif 763 } 764 765 766 void 767 MouseInputDevice::_RecursiveScan(const char* directory) 768 { 769 MID_CALLED(); 770 771 BEntry entry; 772 BDirectory dir(directory); 773 while (dir.GetNextEntry(&entry) == B_OK) { 774 BPath path; 775 entry.GetPath(&path); 776 777 if (!strcmp(path.Leaf(), "serial")) { 778 // skip serial 779 continue; 780 } 781 782 if (entry.IsDirectory()) 783 _RecursiveScan(path.Path()); 784 else 785 _AddDevice(path.Path()); 786 } 787 } 788 789 790 MouseDevice* 791 MouseInputDevice::_FindDevice(const char* path) const 792 { 793 MID_CALLED(); 794 795 for (int32 i = fDevices.CountItems() - 1; i >= 0; i--) { 796 MouseDevice* device = fDevices.ItemAt(i); 797 if (strcmp(device->Path(), path) == 0) 798 return device; 799 } 800 801 return NULL; 802 } 803 804 805 status_t 806 MouseInputDevice::_AddDevice(const char* path) 807 { 808 MID_CALLED(); 809 810 BAutolock _(fDeviceListLock); 811 812 _RemoveDevice(path); 813 814 MouseDevice* device = new(std::nothrow) MouseDevice(*this, path); 815 if (!device) { 816 TRACE("No memory\n"); 817 return B_NO_MEMORY; 818 } 819 820 if (!fDevices.AddItem(device)) { 821 TRACE("No memory in list\n"); 822 delete device; 823 return B_NO_MEMORY; 824 } 825 826 input_device_ref* devices[2]; 827 devices[0] = device->DeviceRef(); 828 devices[1] = NULL; 829 830 TRACE("adding path: %s, name: %s\n", path, devices[0]->name); 831 832 return RegisterDevices(devices); 833 } 834 835 836 status_t 837 MouseInputDevice::_RemoveDevice(const char* path) 838 { 839 MID_CALLED(); 840 841 BAutolock _(fDeviceListLock); 842 843 MouseDevice* device = _FindDevice(path); 844 if (device == NULL) { 845 TRACE("%s not found\n", path); 846 return B_ENTRY_NOT_FOUND; 847 } 848 849 input_device_ref* devices[2]; 850 devices[0] = device->DeviceRef(); 851 devices[1] = NULL; 852 853 TRACE("removing path: %s, name: %s\n", path, devices[0]->name); 854 855 UnregisterDevices(devices); 856 857 fDevices.RemoveItem(device); 858 859 return B_OK; 860 } 861 862 863 864