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reactos/win32ss/user/ntuser/accelerator.c

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/*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel
* PURPOSE: Window accelerator
* FILE: win32ss/user/ntuser/accelerator.c
* PROGRAMER: Casper S. Hornstrup (chorns@users.sourceforge.net)
* Copyright 1993 Martin Ayotte
* Copyright 1994 Alexandre Julliard
* Copyright 1997 Morten Welinder
* Copyright 2011 Rafal Harabien
*/
#include <win32k.h>
DBG_DEFAULT_CHANNEL(UserAccel);
#define FVIRT_TBL_END 0x80
#define FVIRT_MASK 0x7F
/* FUNCTIONS *****************************************************************/
PACCELERATOR_TABLE FASTCALL UserGetAccelObject(HACCEL hAccel)
{
PACCELERATOR_TABLE Accel;
if (!hAccel)
{
EngSetLastError(ERROR_INVALID_ACCEL_HANDLE);
return NULL;
}
Accel = UserGetObject(gHandleTable, hAccel, TYPE_ACCELTABLE);
if (!Accel)
{
EngSetLastError(ERROR_INVALID_ACCEL_HANDLE);
return NULL;
}
return Accel;
}
static
BOOLEAN FASTCALL
co_IntTranslateAccelerator(
PWND Window,
CONST MSG *pMsg,
CONST ACCEL *pAccel)
{
BOOL bFound = FALSE;
UINT Mask = 0, nPos;
HWND hWnd;
HMENU hMenu, hSubMenu;
PMENU MenuObject;
ASSERT_REFS_CO(Window);
hWnd = Window->head.h;
TRACE("IntTranslateAccelerator(hwnd %p, message %x, wParam %x, lParam %x, fVirt 0x%x, key %x, cmd %x)\n",
hWnd, pMsg->message, pMsg->wParam, pMsg->lParam, pAccel->fVirt, pAccel->key, pAccel->cmd);
if (UserGetKeyState(VK_CONTROL) & 0x8000) Mask |= FCONTROL;
if (UserGetKeyState(VK_MENU) & 0x8000) Mask |= FALT; // FIXME: VK_LMENU (msg winetest!)
if (UserGetKeyState(VK_SHIFT) & 0x8000) Mask |= FSHIFT;
TRACE("Mask 0x%x\n", Mask);
if (pAccel->fVirt & FVIRTKEY)
{
/* This is a virtual key. Process WM_(SYS)KEYDOWN messages. */
if (pMsg->message == WM_KEYDOWN || pMsg->message == WM_SYSKEYDOWN)
{
/* Check virtual key and SHIFT, CTRL, LALT state */
if (pMsg->wParam == pAccel->key && Mask == (pAccel->fVirt & (FSHIFT | FCONTROL | FALT)))
{
bFound = TRUE;
}
}
}
else
{
/* This is a char code. Process WM_(SYS)CHAR messages. */
if (pMsg->message == WM_CHAR || pMsg->message == WM_SYSCHAR)
{
/* Check char code and LALT state only */
if (pMsg->wParam == pAccel->key && (Mask & FALT) == (pAccel->fVirt & FALT))
{
bFound = TRUE;
}
}
}
if (!bFound)
{
/* Don't translate this msg */
TRACE("IntTranslateAccelerator returns FALSE\n");
return FALSE;
}
/* Check if accelerator is associated with menu command */
hMenu = (Window->style & WS_CHILD) ? 0 : (HMENU)Window->IDMenu;
hSubMenu = NULL;
MenuObject = UserGetMenuObject(hMenu);
nPos = pAccel->cmd;
if (MenuObject)
{
if ((MENU_FindItem (&MenuObject, &nPos, MF_BYPOSITION)))
hSubMenu = MenuObject->head.h;
else
hMenu = NULL;
}
if (!hMenu)
{
/* Check system menu now */
hMenu = Window->SystemMenu;
hSubMenu = hMenu; /* system menu is a popup menu */
MenuObject = UserGetMenuObject(hMenu);
nPos = pAccel->cmd;
if (MenuObject)
{
if ((MENU_FindItem (&MenuObject, &nPos, MF_BYPOSITION)))
hSubMenu = MenuObject->head.h;
else
hMenu = NULL;
}
}
/* If this is a menu item, there is no capturing enabled and
window is not disabled, send WM_INITMENU */
if (hMenu && !IntGetCaptureWindow())
{
co_IntSendMessage(hWnd, WM_INITMENU, (WPARAM)hMenu, 0L);
if (hSubMenu)
{
nPos = IntFindSubMenu(&hMenu, hSubMenu);
TRACE("hSysMenu = %p, hSubMenu = %p, nPos = %u\n", hMenu, hSubMenu, nPos);
co_IntSendMessage(hWnd, WM_INITMENUPOPUP, (WPARAM)hSubMenu, MAKELPARAM(nPos, TRUE));
}
}
/* Don't send any message if:
- window is disabled
- menu item is disabled
- this is window menu and window is minimized */
if (!(Window->style & WS_DISABLED) &&
!(hMenu && IntGetMenuState(hMenu, pAccel->cmd, MF_BYCOMMAND) & (MF_DISABLED | MF_GRAYED)) &&
!(hMenu && hMenu == (HMENU)Window->IDMenu && (Window->style & WS_MINIMIZED)))
{
/* If this is system menu item, send WM_SYSCOMMAND, otherwise send WM_COMMAND */
if (hMenu && hMenu == Window->SystemMenu)
{
TRACE("Sending WM_SYSCOMMAND, wParam=%0x\n", pAccel->cmd);
co_IntSendMessage(hWnd, WM_SYSCOMMAND, pAccel->cmd, 0x00010000L);
}
else
{
TRACE("Sending WM_COMMAND, wParam=%0x\n", 0x10000 | pAccel->cmd);
co_IntSendMessage(hWnd, WM_COMMAND, 0x10000 | pAccel->cmd, 0L);
}
}
TRACE("IntTranslateAccelerator returns TRUE\n");
return TRUE;
}
/* SYSCALLS *****************************************************************/
ULONG
APIENTRY
NtUserCopyAcceleratorTable(
HACCEL hAccel,
LPACCEL Entries,
ULONG EntriesCount)
{
PACCELERATOR_TABLE Accel;
ULONG Ret;
DECLARE_RETURN(int);
TRACE("Enter NtUserCopyAcceleratorTable\n");
UserEnterShared();
Accel = UserGetAccelObject(hAccel);
if (!Accel)
{
RETURN(0);
}
/* If Entries is NULL return table size */
if (!Entries)
{
RETURN(Accel->Count);
}
/* Don't overrun */
if (Accel->Count < EntriesCount)
EntriesCount = Accel->Count;
Ret = 0;
_SEH2_TRY
{
ProbeForWrite(Entries, EntriesCount*sizeof(Entries[0]), 4);
for (Ret = 0; Ret < EntriesCount; Ret++)
{
Entries[Ret].fVirt = Accel->Table[Ret].fVirt;
Entries[Ret].key = Accel->Table[Ret].key;
Entries[Ret].cmd = Accel->Table[Ret].cmd;
}
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
SetLastNtError(_SEH2_GetExceptionCode());
Ret = 0;
}
_SEH2_END;
RETURN(Ret);
CLEANUP:
TRACE("Leave NtUserCopyAcceleratorTable, ret=%i\n", _ret_);
UserLeave();
END_CLEANUP;
}
HACCEL
APIENTRY
NtUserCreateAcceleratorTable(
LPACCEL Entries,
ULONG EntriesCount)
{
PACCELERATOR_TABLE Accel;
HACCEL hAccel;
ULONG Index;
NTSTATUS Status = STATUS_SUCCESS;
DECLARE_RETURN(HACCEL);
PTHREADINFO pti;
TRACE("Enter NtUserCreateAcceleratorTable(Entries %p, EntriesCount %u)\n",
Entries, EntriesCount);
UserEnterExclusive();
if (!Entries || EntriesCount <= 0)
{
SetLastNtError(STATUS_INVALID_PARAMETER);
RETURN( (HACCEL) NULL );
}
pti = PsGetCurrentThreadWin32Thread();
Accel = UserCreateObject(gHandleTable,
pti->rpdesk,
pti,
(PHANDLE)&hAccel,
TYPE_ACCELTABLE,
sizeof(ACCELERATOR_TABLE));
if (Accel == NULL)
{
SetLastNtError(STATUS_NO_MEMORY);
RETURN( (HACCEL) NULL );
}
Accel->Count = EntriesCount;
Accel->Table = ExAllocatePoolWithTag(PagedPool, EntriesCount * sizeof(ACCEL), USERTAG_ACCEL);
if (Accel->Table == NULL)
{
UserDereferenceObject(Accel);
UserDeleteObject(hAccel, TYPE_ACCELTABLE);
SetLastNtError(STATUS_NO_MEMORY);
RETURN( (HACCEL) NULL);
}
_SEH2_TRY
{
ProbeForRead(Entries, EntriesCount * sizeof(ACCEL), 4);
for (Index = 0; Index < EntriesCount; Index++)
{
Accel->Table[Index].fVirt = Entries[Index].fVirt & FVIRT_MASK;
if(Accel->Table[Index].fVirt & FVIRTKEY)
{
Accel->Table[Index].key = Entries[Index].key;
}
else
{
RtlMultiByteToUnicodeN(&Accel->Table[Index].key,
sizeof(WCHAR),
NULL,
(PCSTR)&Entries[Index].key,
sizeof(CHAR));
}
Accel->Table[Index].cmd = Entries[Index].cmd;
}
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
Status = _SEH2_GetExceptionCode();
}
_SEH2_END;
if (!NT_SUCCESS(Status))
{
ExFreePoolWithTag(Accel->Table, USERTAG_ACCEL);
UserDereferenceObject(Accel);
UserDeleteObject(hAccel, TYPE_ACCELTABLE);
SetLastNtError(Status);
RETURN( (HACCEL) NULL);
}
/* FIXME: Save HandleTable in a list somewhere so we can clean it up again */
/* Release the extra reference (UserCreateObject added 2 references) */
UserDereferenceObject(Accel);
RETURN(hAccel);
CLEANUP:
TRACE("Leave NtUserCreateAcceleratorTable(Entries %p, EntriesCount %u) = %p\n",
Entries, EntriesCount, _ret_);
UserLeave();
END_CLEANUP;
}
BOOLEAN
UserDestroyAccelTable(PVOID Object)
{
PACCELERATOR_TABLE Accel = Object;
if (Accel->Table != NULL)
{
ExFreePoolWithTag(Accel->Table, USERTAG_ACCEL);
Accel->Table = NULL;
}
UserDeleteObject(Accel->head.h, TYPE_ACCELTABLE);
return TRUE;
}
BOOLEAN
APIENTRY
NtUserDestroyAcceleratorTable(
HACCEL hAccel)
{
PACCELERATOR_TABLE Accel;
DECLARE_RETURN(BOOLEAN);
/* FIXME: If the handle table is from a call to LoadAcceleratorTable, decrement it's
usage count (and return TRUE).
FIXME: Destroy only tables created using CreateAcceleratorTable.
*/
TRACE("NtUserDestroyAcceleratorTable(Table %p)\n", hAccel);
UserEnterExclusive();
if (!(Accel = UserGetAccelObject(hAccel)))
{
RETURN( FALSE);
}
UserDestroyAccelTable(Accel);
RETURN( TRUE);
CLEANUP:
TRACE("Leave NtUserDestroyAcceleratorTable(Table %p) = %u\n", hAccel, _ret_);
UserLeave();
END_CLEANUP;
}
int
APIENTRY
NtUserTranslateAccelerator(
HWND hWnd,
HACCEL hAccel,
LPMSG pUnsafeMessage)
{
PWND Window = NULL;
PACCELERATOR_TABLE Accel = NULL;
ULONG i;
MSG Message;
USER_REFERENCE_ENTRY AccelRef, WindowRef;
DECLARE_RETURN(int);
TRACE("NtUserTranslateAccelerator(hWnd %p, hAccel %p, Message %p)\n",
hWnd, hAccel, pUnsafeMessage);
UserEnterShared();
if (hWnd == NULL)
{
RETURN( 0);
}
_SEH2_TRY
{
ProbeForRead(pUnsafeMessage, sizeof(MSG), 4);
RtlCopyMemory(&Message, pUnsafeMessage, sizeof(MSG));
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
SetLastNtError(_SEH2_GetExceptionCode());
_SEH2_YIELD(RETURN( 0));
}
_SEH2_END;
if ((Message.message != WM_KEYDOWN) &&
(Message.message != WM_SYSKEYDOWN) &&
(Message.message != WM_SYSCHAR) &&
(Message.message != WM_CHAR))
{
RETURN( 0);
}
Accel = UserGetAccelObject(hAccel);
if (!Accel)
{
RETURN( 0);
}
UserRefObjectCo(Accel, &AccelRef);
Window = UserGetWindowObject(hWnd);
if (!Window)
{
RETURN( 0);
}
UserRefObjectCo(Window, &WindowRef);
/* FIXME: Associate AcceleratorTable with the current thread */
for (i = 0; i < Accel->Count; i++)
{
if (co_IntTranslateAccelerator(Window, &Message, &Accel->Table[i]))
{
RETURN( 1);
}
/* Undocumented feature... */
if (Accel->Table[i].fVirt & FVIRT_TBL_END)
break;
}
RETURN( 0);
CLEANUP:
if (Window) UserDerefObjectCo(Window);
if (Accel) UserDerefObjectCo(Accel);
TRACE("NtUserTranslateAccelerator returns %d\n", _ret_);
UserLeave();
END_CLEANUP;
}
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