2 * COPYRIGHT: See COPYING in the top level directory
3 * PROJECT: ReactOS Win32k subsystem
4 * PURPOSE: General input functions
5 * FILE: win32ss/user/ntuser/input.c
6 * PROGRAMERS: Casper S. Hornstrup (chorns@users.sourceforge.net)
7 * Rafal Harabien (rafalh@reactos.org)
11 DBG_DEFAULT_CHANNEL(UserInput
);
13 /* GLOBALS *******************************************************************/
15 PTHREADINFO ptiRawInput
;
16 PKTIMER MasterTimer
= NULL
;
17 PATTACHINFO gpai
= NULL
;
19 HANDLE ghKeyboardDevice
= NULL
;
21 static DWORD LastInputTick
= 0;
22 static HANDLE ghMouseDevice
;
24 /* FUNCTIONS *****************************************************************/
29 * Updates or gets last input tick count
32 IntLastInputTick(BOOL bUpdate
)
36 LARGE_INTEGER TickCount
;
37 KeQueryTickCount(&TickCount
);
38 LastInputTick
= MsqCalculateMessageTime(&TickCount
);
39 if (gpsi
) gpsi
->dwLastRITEventTickCount
= LastInputTick
;
47 * Check if scrensaver should be started and sends message to SAS window
50 DoTheScreenSaver(VOID
)
52 LARGE_INTEGER TickCount
;
55 if (gspv
.iScrSaverTimeout
> 0) // Zero means Off.
57 KeQueryTickCount(&TickCount
);
58 Test
= MsqCalculateMessageTime(&TickCount
);
59 Test
= Test
- LastInputTick
;
60 TO
= 1000 * gspv
.iScrSaverTimeout
;
63 TRACE("Screensaver Message Start! Tick %lu Timeout %d \n", Test
, gspv
.iScrSaverTimeout
);
65 if (ppiScrnSaver
) // We are or we are not the screensaver, prevent reentry...
67 if (!(ppiScrnSaver
->W32PF_flags
& W32PF_IDLESCREENSAVER
))
69 ppiScrnSaver
->W32PF_flags
|= W32PF_IDLESCREENSAVER
;
70 ERR("Screensaver is Idle\n");
75 PUSER_MESSAGE_QUEUE ForegroundQueue
= IntGetFocusMessageQueue();
76 if (ForegroundQueue
&& ForegroundQueue
->spwndActive
)
77 UserPostMessage(hwndSAS
, WM_LOGONNOTIFY
, LN_START_SCREENSAVE
, 1); // lParam 1 == Secure
79 UserPostMessage(hwndSAS
, WM_LOGONNOTIFY
, LN_START_SCREENSAVE
, 0);
88 * Opens input device for asynchronous access
92 OpenInputDevice(PHANDLE pHandle
, PFILE_OBJECT
*ppObject
, CONST WCHAR
*pszDeviceName
)
94 UNICODE_STRING DeviceName
;
95 OBJECT_ATTRIBUTES ObjectAttributes
;
99 RtlInitUnicodeString(&DeviceName
, pszDeviceName
);
101 InitializeObjectAttributes(&ObjectAttributes
,
107 Status
= ZwOpenFile(pHandle
,
113 if (NT_SUCCESS(Status
) && ppObject
)
115 Status
= ObReferenceObjectByHandle(*pHandle
, SYNCHRONIZE
, NULL
, KernelMode
, (PVOID
*)ppObject
, NULL
);
116 ASSERT(NT_SUCCESS(Status
));
125 * Reads data from input devices and supports win32 timers
128 RawInputThreadMain(VOID
)
130 NTSTATUS MouStatus
= STATUS_UNSUCCESSFUL
, KbdStatus
= STATUS_UNSUCCESSFUL
, Status
;
131 IO_STATUS_BLOCK MouIosb
, KbdIosb
;
132 PFILE_OBJECT pKbdDevice
= NULL
, pMouDevice
= NULL
;
133 LARGE_INTEGER ByteOffset
;
134 //LARGE_INTEGER WaitTimeout;
135 PVOID WaitObjects
[4], pSignaledObject
= NULL
;
136 KWAIT_BLOCK WaitBlockArray
[RTL_NUMBER_OF(WaitObjects
)];
137 ULONG cWaitObjects
= 0, cMaxWaitObjects
= 2;
138 MOUSE_INPUT_DATA MouseInput
;
139 KEYBOARD_INPUT_DATA KeyInput
;
142 ByteOffset
.QuadPart
= (LONGLONG
)0;
143 //WaitTimeout.QuadPart = (LONGLONG)(-10000000);
145 ptiRawInput
= GetW32ThreadInfo();
146 ptiRawInput
->TIF_flags
|= TIF_SYSTEMTHREAD
;
147 ptiRawInput
->pClientInfo
->dwTIFlags
= ptiRawInput
->TIF_flags
;
149 TRACE("Raw Input Thread %p\n", ptiRawInput
);
151 KeSetPriorityThread(&PsGetCurrentThread()->Tcb
,
152 LOW_REALTIME_PRIORITY
+ 3);
154 UserEnterExclusive();
158 NT_ASSERT(ghMouseDevice
== NULL
);
159 NT_ASSERT(ghKeyboardDevice
== NULL
);
161 PoRequestShutdownEvent(&ShutdownEvent
);
166 /* Check if mouse device already exists */
167 Status
= OpenInputDevice(&ghMouseDevice
, &pMouDevice
, L
"\\Device\\PointerClass0" );
168 if (NT_SUCCESS(Status
))
171 TRACE("Mouse connected!\n");
174 if (!ghKeyboardDevice
)
176 /* Check if keyboard device already exists */
177 Status
= OpenInputDevice(&ghKeyboardDevice
, &pKbdDevice
, L
"\\Device\\KeyboardClass0");
178 if (NT_SUCCESS(Status
))
181 TRACE("Keyboard connected!\n");
182 // Get and load keyboard attributes.
183 UserInitKeyboard(ghKeyboardDevice
);
184 UserEnterExclusive();
185 // Register the Window hotkey.
186 UserRegisterHotKey(PWND_BOTTOM
, IDHK_WINKEY
, MOD_WIN
, 0);
187 // Register the debug hotkeys.
193 /* Reset WaitHandles array */
195 WaitObjects
[cWaitObjects
++] = ShutdownEvent
;
196 WaitObjects
[cWaitObjects
++] = MasterTimer
;
200 /* Try to read from mouse if previous reading is not pending */
201 if (MouStatus
!= STATUS_PENDING
)
203 MouStatus
= ZwReadFile(ghMouseDevice
,
209 sizeof(MOUSE_INPUT_DATA
),
214 if (MouStatus
== STATUS_PENDING
)
215 WaitObjects
[cWaitObjects
++] = &pMouDevice
->Event
;
218 if (ghKeyboardDevice
)
220 /* Try to read from keyboard if previous reading is not pending */
221 if (KbdStatus
!= STATUS_PENDING
)
223 KbdStatus
= ZwReadFile(ghKeyboardDevice
,
229 sizeof(KEYBOARD_INPUT_DATA
),
234 if (KbdStatus
== STATUS_PENDING
)
235 WaitObjects
[cWaitObjects
++] = &pKbdDevice
->Event
;
238 /* If all objects are pending, wait for them */
239 if (cWaitObjects
== cMaxWaitObjects
)
241 Status
= KeWaitForMultipleObjects(cWaitObjects
,
250 if ((Status
>= STATUS_WAIT_0
) &&
251 (Status
< (STATUS_WAIT_0
+ (LONG
)cWaitObjects
)))
253 /* Some device has finished reading */
254 pSignaledObject
= WaitObjects
[Status
- STATUS_WAIT_0
];
256 /* Check if it is mouse or keyboard and update status */
257 if ((MouStatus
== STATUS_PENDING
) &&
258 (pSignaledObject
== &pMouDevice
->Event
))
260 MouStatus
= MouIosb
.Status
;
262 else if ((KbdStatus
== STATUS_PENDING
) &&
263 (pSignaledObject
== &pKbdDevice
->Event
))
265 KbdStatus
= KbdIosb
.Status
;
267 else if (pSignaledObject
== MasterTimer
)
271 else if (pSignaledObject
== ShutdownEvent
)
279 /* Have we successed reading from mouse? */
280 if (NT_SUCCESS(MouStatus
) && MouStatus
!= STATUS_PENDING
)
282 TRACE("MouseEvent\n");
284 /* Set LastInputTick */
285 IntLastInputTick(TRUE
);
288 UserEnterExclusive();
289 UserProcessMouseInput(&MouseInput
);
292 else if (MouStatus
!= STATUS_PENDING
)
293 ERR("Failed to read from mouse: %x.\n", MouStatus
);
295 /* Have we successed reading from keyboard? */
296 if (NT_SUCCESS(KbdStatus
) && KbdStatus
!= STATUS_PENDING
)
298 TRACE("KeyboardEvent: %s %04x\n",
299 (KeyInput
.Flags
& KEY_BREAK
) ? "up" : "down",
302 /* Set LastInputTick */
303 IntLastInputTick(TRUE
);
306 UserEnterExclusive();
307 UserProcessKeyboardInput(&KeyInput
);
310 else if (KbdStatus
!= STATUS_PENDING
)
311 ERR("Failed to read from keyboard: %x.\n", KbdStatus
);
316 (void)ZwCancelIoFile(ghMouseDevice
, &MouIosb
);
317 ObCloseHandle(ghMouseDevice
, KernelMode
);
318 ObDereferenceObject(pMouDevice
);
319 ghMouseDevice
= NULL
;
322 if (ghKeyboardDevice
)
324 (void)ZwCancelIoFile(ghKeyboardDevice
, &KbdIosb
);
325 ObCloseHandle(ghKeyboardDevice
, KernelMode
);
326 ObDereferenceObject(pKbdDevice
);
327 ghKeyboardDevice
= NULL
;
330 ERR("Raw Input Thread Exit!\n");
334 * CreateSystemThreads
336 * Called form dedicated thread in CSRSS. RIT is started in context of this
337 * thread because it needs valid Win32 process with TEB initialized.
340 CreateSystemThreads(UINT Type
)
346 case 0: RawInputThreadMain(); break;
347 case 1: DesktopThreadMain(); break;
348 default: ERR("Wrong type: %x\n", Type
);
359 * Inits input implementation
366 MasterTimer
= ExAllocatePoolWithTag(NonPagedPool
, sizeof(KTIMER
), USERTAG_SYSTEM
);
369 ERR("Failed to allocate memory\n");
371 return STATUS_UNSUCCESSFUL
;
373 KeInitializeTimer(MasterTimer
);
375 return STATUS_SUCCESS
;
379 IntBlockInput(PTHREADINFO pti
, BOOL BlockIt
)
381 PTHREADINFO OldBlock
;
384 if(!pti
->rpdesk
|| ((pti
->TIF_flags
& TIF_INCLEANUP
) && BlockIt
))
387 * Fail blocking if exiting the thread
394 * FIXME: Check access rights of the window station
395 * e.g. services running in the service window station cannot block input
397 if(!ThreadHasInputAccess(pti
) ||
398 !IntIsActiveDesktop(pti
->rpdesk
))
400 EngSetLastError(ERROR_ACCESS_DENIED
);
405 OldBlock
= pti
->rpdesk
->BlockInputThread
;
410 EngSetLastError(ERROR_ACCESS_DENIED
);
413 pti
->rpdesk
->BlockInputThread
= (BlockIt
? pti
: NULL
);
414 return OldBlock
== NULL
;
417 pti
->rpdesk
->BlockInputThread
= (BlockIt
? pti
: NULL
);
418 return OldBlock
== NULL
;
428 TRACE("Enter NtUserBlockInput\n");
429 UserEnterExclusive();
431 ret
= IntBlockInput(PsGetCurrentThreadWin32Thread(), BlockIt
);
434 TRACE("Leave NtUserBlockInput, ret=%i\n", ret
);
441 IsRemoveAttachThread(PTHREADINFO pti
)
446 PTHREADINFO ptiFrom
= NULL
, ptiTo
= NULL
;
450 if (!gpai
) return TRUE
;
452 pai
= gpai
; // Bottom of the list.
456 if (pai
->pti2
== pti
)
462 if (pai
->pti1
== pti
)
472 if (!pai
&& !ptiFrom
&& !ptiTo
) break;
474 Status
= UserAttachThreadInput(ptiFrom
, ptiTo
, FALSE
);
475 if (!NT_SUCCESS(Status
)) Ret
= FALSE
;
483 UserAttachThreadInput(PTHREADINFO ptiFrom
, PTHREADINFO ptiTo
, BOOL fAttach
)
487 PCURICON_OBJECT CurIcon
;
489 /* Can not be the same thread. */
490 if (ptiFrom
== ptiTo
) return STATUS_INVALID_PARAMETER
;
492 /* Do not attach to system threads or between different desktops. */
493 if (ptiFrom
->TIF_flags
& TIF_DONTATTACHQUEUE
||
494 ptiTo
->TIF_flags
& TIF_DONTATTACHQUEUE
||
495 ptiFrom
->rpdesk
!= ptiTo
->rpdesk
)
496 return STATUS_ACCESS_DENIED
;
499 Keyboard and mouse events received by both threads are processed by the thread specified by the idAttachTo.
502 /* If Attach set, allocate and link. */
505 pai
= ExAllocatePoolWithTag(PagedPool
, sizeof(ATTACHINFO
), USERTAG_ATTACHINFO
);
506 if (!pai
) return STATUS_NO_MEMORY
;
513 ERR("Attach Allocated! ptiFrom 0x%p ptiTo 0x%p paiCount %d\n",ptiFrom
,ptiTo
,paiCount
);
515 if (ptiTo
->MessageQueue
!= ptiFrom
->MessageQueue
)
518 ptiTo
->MessageQueue
->iCursorLevel
-= ptiFrom
->iCursorLevel
;
520 if (ptiFrom
->MessageQueue
== gpqForeground
)
522 ERR("ptiFrom is Foreground\n");
523 ptiTo
->MessageQueue
->spwndActive
= ptiFrom
->MessageQueue
->spwndActive
;
524 ptiTo
->MessageQueue
->spwndFocus
= ptiFrom
->MessageQueue
->spwndFocus
;
525 ptiTo
->MessageQueue
->spwndCapture
= ptiFrom
->MessageQueue
->spwndCapture
;
526 ptiTo
->MessageQueue
->QF_flags
^= ((ptiTo
->MessageQueue
->QF_flags
^ ptiFrom
->MessageQueue
->QF_flags
) & QF_CAPTURELOCKED
);
527 RtlCopyMemory(&ptiTo
->MessageQueue
->CaretInfo
,
528 &ptiFrom
->MessageQueue
->CaretInfo
,
529 sizeof(ptiTo
->MessageQueue
->CaretInfo
));
530 IntSetFocusMessageQueue(NULL
);
531 IntSetFocusMessageQueue(ptiTo
->MessageQueue
);
532 gptiForeground
= ptiTo
;
536 ERR("ptiFrom NOT Foreground\n");
537 if ( ptiTo
->MessageQueue
->spwndActive
== 0 )
538 ptiTo
->MessageQueue
->spwndActive
= ptiFrom
->MessageQueue
->spwndActive
;
539 if ( ptiTo
->MessageQueue
->spwndFocus
== 0 )
540 ptiTo
->MessageQueue
->spwndFocus
= ptiFrom
->MessageQueue
->spwndFocus
;
543 CurIcon
= ptiFrom
->MessageQueue
->CursorObject
;
545 MsqDestroyMessageQueue(ptiFrom
);
549 // Could be global. Keep it above the water line!
550 UserReferenceObject(CurIcon
);
553 if (CurIcon
&& UserObjectInDestroy(UserHMGetHandle(CurIcon
)))
555 UserDereferenceObject(CurIcon
);
559 ptiFrom
->MessageQueue
= ptiTo
->MessageQueue
;
561 // Pass cursor From if To is null. Pass test_SetCursor parent_id == current pti ID.
562 if (CurIcon
&& ptiTo
->MessageQueue
->CursorObject
== NULL
)
564 ERR("ptiTo receiving ptiFrom Cursor\n");
565 ptiTo
->MessageQueue
->CursorObject
= CurIcon
;
568 ptiFrom
->MessageQueue
->cThreads
++;
569 ERR("ptiTo S Share count %u\n", ptiFrom
->MessageQueue
->cThreads
);
571 IntReferenceMessageQueue(ptiTo
->MessageQueue
);
575 ERR("Attach Threads are already associated!\n");
578 else /* If clear, unlink and free it. */
583 if (!gpai
) return STATUS_INVALID_PARAMETER
;
585 /* Search list and free if found or return false. */
587 while (*ppai
!= NULL
)
589 if ( (*ppai
)->pti2
== ptiTo
&& (*ppai
)->pti1
== ptiFrom
)
592 /* Remove it from the list */
593 *ppai
= (*ppai
)->paiNext
;
594 ExFreePoolWithTag(pai
, USERTAG_ATTACHINFO
);
599 ppai
= &((*ppai
)->paiNext
);
602 if (!Hit
) return STATUS_INVALID_PARAMETER
;
604 ERR("Attach Free! ptiFrom 0x%p ptiTo 0x%p paiCount %d\n",ptiFrom
,ptiTo
,paiCount
);
606 if (ptiTo
->MessageQueue
== ptiFrom
->MessageQueue
)
608 PWND spwndActive
= ptiTo
->MessageQueue
->spwndActive
;
609 PWND spwndFocus
= ptiTo
->MessageQueue
->spwndFocus
;
611 if (gptiForeground
== ptiFrom
)
613 ERR("ptiTo is now pti FG.\n");
614 // MessageQueue foreground is set so switch threads.
615 gptiForeground
= ptiTo
;
617 ptiTo
->MessageQueue
->cThreads
--;
618 ERR("ptiTo E Share count %u\n", ptiTo
->MessageQueue
->cThreads
);
619 ASSERT(ptiTo
->MessageQueue
->cThreads
>= 1);
621 IntDereferenceMessageQueue(ptiTo
->MessageQueue
);
623 ptiFrom
->MessageQueue
= MsqCreateMessageQueue(ptiFrom
);
627 if (spwndActive
->head
.pti
== ptiFrom
)
629 ptiFrom
->MessageQueue
->spwndActive
= spwndActive
;
630 ptiTo
->MessageQueue
->spwndActive
= 0;
635 if (spwndFocus
->head
.pti
== ptiFrom
)
637 ptiFrom
->MessageQueue
->spwndFocus
= spwndFocus
;
638 ptiTo
->MessageQueue
->spwndFocus
= 0;
641 ptiTo
->MessageQueue
->iCursorLevel
-= ptiFrom
->iCursorLevel
;
645 ERR("Detaching Threads are not associated!\n");
648 /* Note that key state, which can be ascertained by calls to the GetKeyState
649 or GetKeyboardState function, is reset after a call to AttachThreadInput.
652 RtlCopyMemory(ptiTo
->MessageQueue
->afKeyState
, gafAsyncKeyState
, sizeof(gafAsyncKeyState
));
654 ptiTo
->MessageQueue
->msgDblClk
.message
= 0;
656 /* Generate mouse move message */
657 msg
.message
= WM_MOUSEMOVE
;
658 msg
.wParam
= UserGetMouseButtonsState();
659 msg
.lParam
= MAKELPARAM(gpsi
->ptCursor
.x
, gpsi
->ptCursor
.y
);
660 msg
.pt
= gpsi
->ptCursor
;
661 co_MsqInsertMouseMessage(&msg
, 0, 0, TRUE
);
663 return STATUS_SUCCESS
;
668 NtUserAttachThreadInput(
674 PTHREADINFO pti
, ptiTo
;
677 UserEnterExclusive();
678 TRACE("Enter NtUserAttachThreadInput %s\n",(fAttach
? "TRUE" : "FALSE" ));
680 pti
= IntTID2PTI(UlongToHandle(idAttach
));
681 ptiTo
= IntTID2PTI(UlongToHandle(idAttachTo
));
683 if ( !pti
|| !ptiTo
)
685 TRACE("AttachThreadInput pti or ptiTo NULL.\n");
686 EngSetLastError(ERROR_INVALID_PARAMETER
);
690 Status
= UserAttachThreadInput( pti
, ptiTo
, fAttach
);
691 if (!NT_SUCCESS(Status
))
693 TRACE("AttachThreadInput Error Status 0x%x. \n",Status
);
694 EngSetLastError(RtlNtStatusToDosError(Status
));
699 TRACE("Leave NtUserAttachThreadInput, ret=%d\n",Ret
);
707 * Generates input events from software
719 TRACE("Enter NtUserSendInput\n");
720 UserEnterExclusive();
722 pti
= PsGetCurrentThreadWin32Thread();
730 if (!nInputs
|| !pInput
|| cbSize
!= sizeof(INPUT
))
732 EngSetLastError(ERROR_INVALID_PARAMETER
);
737 * FIXME: Check access rights of the window station
738 * e.g. services running in the service window station cannot block input
740 if (!ThreadHasInputAccess(pti
) ||
741 !IntIsActiveDesktop(pti
->rpdesk
))
743 EngSetLastError(ERROR_ACCESS_DENIED
);
752 Status
= MmCopyFromCaller(&SafeInput
, pInput
++, sizeof(INPUT
));
753 if (!NT_SUCCESS(Status
))
755 SetLastNtError(Status
);
759 switch (SafeInput
.type
)
762 if (UserSendMouseInput(&SafeInput
.mi
, TRUE
))
766 if (UserSendKeyboardInput(&SafeInput
.ki
, TRUE
))
770 FIXME("INPUT_HARDWARE not supported!");
773 ERR("SendInput(): Invalid input type: 0x%x\n", SafeInput
.type
);
779 TRACE("Leave NtUserSendInput, ret=%u\n", uRet
);