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reactos/win32ss/user/ntuser/cursoricon.c
Hermès Bélusca-Maïto dba80b614b Sync with trunk revision r58045 to bring the corrections on configure.cmd and on widl/wpp. 
svn path=/branches/ros-csrss/; revision=58046
2012-12-29 20:57:10 +00:00

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/*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS Win32k subsystem
* PURPOSE: Cursor and icon functions
* FILE: subsystems/win32/win32k/ntuser/cursoricon.c
* PROGRAMER: ReactOS Team
*/
/*
* We handle two types of cursors/icons:
* - Private
* Loaded without LR_SHARED flag
* Private to a process
* Can be deleted by calling NtDestroyCursorIcon()
* CurIcon->hModule, CurIcon->hRsrc and CurIcon->hGroupRsrc set to NULL
* - Shared
* Loaded with LR_SHARED flag
* Possibly shared by multiple processes
* Immune to NtDestroyCursorIcon()
* CurIcon->hModule, CurIcon->hRsrc and CurIcon->hGroupRsrc are valid
* There's a M:N relationship between processes and (shared) cursor/icons.
* A process can have multiple cursor/icons and a cursor/icon can be used
* by multiple processes. To keep track of this we keep a list of all
* cursor/icons (CurIconList) and per cursor/icon we keep a list of
* CURICON_PROCESS structs starting at CurIcon->ProcessList.
*/
#include <win32k.h>
DBG_DEFAULT_CHANNEL(UserIcon);
static PPAGED_LOOKASIDE_LIST pgProcessLookasideList;
static LIST_ENTRY gCurIconList;
SYSTEM_CURSORINFO gSysCursorInfo;
BOOL
InitCursorImpl()
{
pgProcessLookasideList = ExAllocatePool(NonPagedPool, sizeof(PAGED_LOOKASIDE_LIST));
if(!pgProcessLookasideList)
return FALSE;
ExInitializePagedLookasideList(pgProcessLookasideList,
NULL,
NULL,
0,
sizeof(CURICON_PROCESS),
TAG_DIB,
128);
InitializeListHead(&gCurIconList);
gSysCursorInfo.Enabled = FALSE;
gSysCursorInfo.ButtonsDown = 0;
gSysCursorInfo.bClipped = FALSE;
gSysCursorInfo.LastBtnDown = 0;
gSysCursorInfo.CurrentCursorObject = NULL;
gSysCursorInfo.ShowingCursor = -1;
gSysCursorInfo.ClickLockActive = FALSE;
gSysCursorInfo.ClickLockTime = 0;
return TRUE;
}
PSYSTEM_CURSORINFO
IntGetSysCursorInfo()
{
return &gSysCursorInfo;
}
/* This function creates a reference for the object! */
PCURICON_OBJECT FASTCALL UserGetCurIconObject(HCURSOR hCurIcon)
{
PCURICON_OBJECT CurIcon;
if (!hCurIcon)
{
EngSetLastError(ERROR_INVALID_CURSOR_HANDLE);
return NULL;
}
CurIcon = (PCURICON_OBJECT)UserReferenceObjectByHandle(hCurIcon, TYPE_CURSOR);
if (!CurIcon)
{
/* We never set ERROR_INVALID_ICON_HANDLE. lets hope noone ever checks for it */
EngSetLastError(ERROR_INVALID_CURSOR_HANDLE);
return NULL;
}
ASSERT(CurIcon->head.cLockObj >= 1);
return CurIcon;
}
BOOL UserSetCursorPos( INT x, INT y, DWORD flags, ULONG_PTR dwExtraInfo, BOOL Hook)
{
PWND DesktopWindow;
PSYSTEM_CURSORINFO CurInfo;
MSG Msg;
RECTL rcClip;
POINT pt;
if(!(DesktopWindow = UserGetDesktopWindow()))
{
return FALSE;
}
CurInfo = IntGetSysCursorInfo();
/* Clip cursor position */
if (!CurInfo->bClipped)
rcClip = DesktopWindow->rcClient;
else
rcClip = CurInfo->rcClip;
if(x >= rcClip.right) x = rcClip.right - 1;
if(x < rcClip.left) x = rcClip.left;
if(y >= rcClip.bottom) y = rcClip.bottom - 1;
if(y < rcClip.top) y = rcClip.top;
pt.x = x;
pt.y = y;
/* 1. Generate a mouse move message, this sets the htEx and Track Window too. */
Msg.message = WM_MOUSEMOVE;
Msg.wParam = UserGetMouseButtonsState();
Msg.lParam = MAKELPARAM(x, y);
Msg.pt = pt;
co_MsqInsertMouseMessage(&Msg, flags, dwExtraInfo, Hook);
/* 2. Store the new cursor position */
gpsi->ptCursor = pt;
return TRUE;
}
/*
* We have to register that this object is in use by the current
* process. The only way to do that seems to be to walk the list
* of cursor/icon objects starting at W32Process->CursorIconListHead.
* If the object is already present in the list, we don't have to do
* anything, if it's not present we add it and inc the ProcessCount
* in the object. Having to walk the list kind of sucks, but that's
* life...
*/
static BOOLEAN FASTCALL
ReferenceCurIconByProcess(PCURICON_OBJECT CurIcon)
{
PPROCESSINFO Win32Process;
PCURICON_PROCESS Current;
Win32Process = PsGetCurrentProcessWin32Process();
LIST_FOR_EACH(Current, &CurIcon->ProcessList, CURICON_PROCESS, ListEntry)
{
if (Current->Process == Win32Process)
{
/* Already registered for this process */
return TRUE;
}
}
/* Not registered yet */
Current = ExAllocateFromPagedLookasideList(pgProcessLookasideList);
if (NULL == Current)
{
return FALSE;
}
InsertHeadList(&CurIcon->ProcessList, &Current->ListEntry);
Current->Process = Win32Process;
return TRUE;
}
PCURICON_OBJECT FASTCALL
IntFindExistingCurIconObject(HMODULE hModule,
HRSRC hRsrc, LONG cx, LONG cy)
{
PCURICON_OBJECT CurIcon;
LIST_FOR_EACH(CurIcon, &gCurIconList, CURICON_OBJECT, ListEntry)
{
// if (NT_SUCCESS(UserReferenceObjectByPointer(Object, TYPE_CURSOR))) // <- huh????
// UserReferenceObject( CurIcon);
// {
if ((CurIcon->hModule == hModule) && (CurIcon->hRsrc == hRsrc))
{
if (cx && ((cx != CurIcon->Size.cx) || (cy != CurIcon->Size.cy)))
{
// UserDereferenceObject(CurIcon);
continue;
}
if (! ReferenceCurIconByProcess(CurIcon))
{
return NULL;
}
return CurIcon;
}
// }
// UserDereferenceObject(CurIcon);
}
return NULL;
}
PCURICON_OBJECT
IntCreateCurIconHandle(DWORD dwNumber)
{
PCURICON_OBJECT CurIcon;
HANDLE hCurIcon;
CurIcon = UserCreateObject(gHandleTable, NULL, NULL, &hCurIcon, TYPE_CURSOR, sizeof(CURICON_OBJECT));
if (!CurIcon)
{
EngSetLastError(ERROR_NOT_ENOUGH_MEMORY);
return FALSE;
}
CurIcon->Self = hCurIcon;
InitializeListHead(&CurIcon->ProcessList);
if (! ReferenceCurIconByProcess(CurIcon))
{
ERR("Failed to add process\n");
UserDeleteObject(hCurIcon, TYPE_CURSOR);
UserDereferenceObject(CurIcon);
return NULL;
}
InsertHeadList(&gCurIconList, &CurIcon->ListEntry);
return CurIcon;
}
BOOLEAN FASTCALL
IntDestroyCurIconObject(PCURICON_OBJECT CurIcon, PPROCESSINFO ppi)
{
PSYSTEM_CURSORINFO CurInfo;
HBITMAP bmpMask, bmpColor;
BOOLEAN Ret, bListEmpty, bFound = FALSE;
PCURICON_PROCESS Current = NULL;
/* For handles created without any data (error handling) */
if(IsListEmpty(&CurIcon->ProcessList))
goto emptyList;
/* Now find this process in the list of processes referencing this object and
remove it from that list */
LIST_FOR_EACH(Current, &CurIcon->ProcessList, CURICON_PROCESS, ListEntry)
{
if (Current->Process == ppi)
{
bFound = TRUE;
bListEmpty = RemoveEntryList(&Current->ListEntry);
break;
}
}
if(!bFound)
{
/* This object doesn't belong to this process */
EngSetLastError(ERROR_INVALID_HANDLE);
return FALSE;
}
ExFreeToPagedLookasideList(pgProcessLookasideList, Current);
/* If there are still processes referencing this object we can't destroy it yet */
if (!bListEmpty)
{
if(CurIcon->head.ppi == ppi)
{
/* Set the first process of the list as owner */
Current = CONTAINING_RECORD(CurIcon->ProcessList.Flink, CURICON_PROCESS, ListEntry);
UserSetObjectOwner(CurIcon, TYPE_CURSOR, Current->Process);
}
UserDereferenceObject(CurIcon);
return TRUE;
}
emptyList:
/* Remove it from the list */
RemoveEntryList(&CurIcon->ListEntry);
CurInfo = IntGetSysCursorInfo();
if (CurInfo->CurrentCursorObject == CurIcon)
{
/* Hide the cursor if we're destroying the current cursor */
UserSetCursor(NULL, TRUE);
}
bmpMask = CurIcon->IconInfo.hbmMask;
bmpColor = CurIcon->IconInfo.hbmColor;
/* Delete bitmaps */
if (bmpMask)
{
GreSetObjectOwner(bmpMask, GDI_OBJ_HMGR_POWNED);
GreDeleteObject(bmpMask);
CurIcon->IconInfo.hbmMask = NULL;
}
if (bmpColor)
{
GreSetObjectOwner(bmpColor, GDI_OBJ_HMGR_POWNED);
GreDeleteObject(bmpColor);
CurIcon->IconInfo.hbmColor = NULL;
}
/* We were given a pointer, no need to keep the reference anylonger! */
UserDereferenceObject(CurIcon);
Ret = UserDeleteObject(CurIcon->Self, TYPE_CURSOR);
return Ret;
}
VOID FASTCALL
IntCleanupCurIcons(struct _EPROCESS *Process, PPROCESSINFO Win32Process)
{
PCURICON_OBJECT CurIcon, tmp;
/* Run through the list of icon objects */
LIST_FOR_EACH_SAFE(CurIcon, tmp, &gCurIconList, CURICON_OBJECT, ListEntry)
{
UserReferenceObject(CurIcon);
IntDestroyCurIconObject(CurIcon, Win32Process);
}
}
/*
* @implemented
*/
BOOL
APIENTRY
NtUserGetIconInfo(
HANDLE hCurIcon,
PICONINFO IconInfo,
PUNICODE_STRING lpInstName, // Optional
PUNICODE_STRING lpResName, // Optional
LPDWORD pbpp, // Optional
BOOL bInternal)
{
ICONINFO ii;
PCURICON_OBJECT CurIcon;
NTSTATUS Status = STATUS_SUCCESS;
BOOL Ret = FALSE;
DWORD colorBpp = 0;
TRACE("Enter NtUserGetIconInfo\n");
UserEnterExclusive();
if (!IconInfo)
{
EngSetLastError(ERROR_INVALID_PARAMETER);
goto leave;
}
if (!(CurIcon = UserGetCurIconObject(hCurIcon)))
{
goto leave;
}
RtlCopyMemory(&ii, &CurIcon->IconInfo, sizeof(ICONINFO));
/* Copy bitmaps */
ii.hbmMask = BITMAP_CopyBitmap(CurIcon->IconInfo.hbmMask);
ii.hbmColor = BITMAP_CopyBitmap(CurIcon->IconInfo.hbmColor);
if (pbpp)
{
PSURFACE psurfBmp;
psurfBmp = SURFACE_ShareLockSurface(CurIcon->IconInfo.hbmColor);
if (psurfBmp)
{
colorBpp = BitsPerFormat(psurfBmp->SurfObj.iBitmapFormat);
SURFACE_ShareUnlockSurface(psurfBmp);
}
}
/* Copy fields */
_SEH2_TRY
{
ProbeForWrite(IconInfo, sizeof(ICONINFO), 1);
RtlCopyMemory(IconInfo, &ii, sizeof(ICONINFO));
/// @todo Implement support for lpInstName
if (lpInstName)
{
RtlInitEmptyUnicodeString(lpInstName, NULL, 0);
}
/// @todo Implement support for lpResName
if (lpResName)
{
RtlInitEmptyUnicodeString(lpResName, NULL, 0);
}
if (pbpp)
{
ProbeForWrite(pbpp, sizeof(DWORD), 1);
*pbpp = colorBpp;
}
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
Status = _SEH2_GetExceptionCode();
}
_SEH2_END
if (NT_SUCCESS(Status))
Ret = TRUE;
else
SetLastNtError(Status);
UserDereferenceObject(CurIcon);
leave:
TRACE("Leave NtUserGetIconInfo, ret=%i\n", Ret);
UserLeave();
return Ret;
}
/*
* @implemented
*/
BOOL
APIENTRY
NtUserGetIconSize(
HANDLE hCurIcon,
UINT istepIfAniCur,
PLONG plcx, // &size.cx
PLONG plcy) // &size.cy
{
PCURICON_OBJECT CurIcon;
NTSTATUS Status = STATUS_SUCCESS;
BOOL bRet = FALSE;
TRACE("Enter NtUserGetIconSize\n");
UserEnterExclusive();
if (!(CurIcon = UserGetCurIconObject(hCurIcon)))
{
goto cleanup;
}
_SEH2_TRY
{
ProbeForWrite(plcx, sizeof(LONG), 1);
RtlCopyMemory(plcx, &CurIcon->Size.cx, sizeof(LONG));
ProbeForWrite(plcy, sizeof(LONG), 1);
RtlCopyMemory(plcy, &CurIcon->Size.cy, sizeof(LONG));
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
Status = _SEH2_GetExceptionCode();
}
_SEH2_END
if (NT_SUCCESS(Status))
bRet = TRUE;
else
SetLastNtError(Status); // Maybe not, test this
UserDereferenceObject(CurIcon);
cleanup:
TRACE("Leave NtUserGetIconSize, ret=%i\n", bRet);
UserLeave();
return bRet;
}
/*
* @implemented
*/
BOOL
APIENTRY
NtUserGetCursorInfo(
PCURSORINFO pci)
{
CURSORINFO SafeCi;
PSYSTEM_CURSORINFO CurInfo;
NTSTATUS Status = STATUS_SUCCESS;
PCURICON_OBJECT CurIcon;
BOOL Ret = FALSE;
DECLARE_RETURN(BOOL);
TRACE("Enter NtUserGetCursorInfo\n");
UserEnterExclusive();
CurInfo = IntGetSysCursorInfo();
CurIcon = (PCURICON_OBJECT)CurInfo->CurrentCursorObject;
SafeCi.cbSize = sizeof(CURSORINFO);
SafeCi.flags = ((CurIcon && CurInfo->ShowingCursor >= 0) ? CURSOR_SHOWING : 0);
SafeCi.hCursor = (CurIcon ? (HCURSOR)CurIcon->Self : (HCURSOR)0);
SafeCi.ptScreenPos = gpsi->ptCursor;
_SEH2_TRY
{
if (pci->cbSize == sizeof(CURSORINFO))
{
ProbeForWrite(pci, sizeof(CURSORINFO), 1);
RtlCopyMemory(pci, &SafeCi, sizeof(CURSORINFO));
Ret = TRUE;
}
else
{
EngSetLastError(ERROR_INVALID_PARAMETER);
}
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
Status = _SEH2_GetExceptionCode();
}
_SEH2_END;
if (!NT_SUCCESS(Status))
{
SetLastNtError(Status);
}
RETURN(Ret);
CLEANUP:
TRACE("Leave NtUserGetCursorInfo, ret=%i\n",_ret_);
UserLeave();
END_CLEANUP;
}
BOOL
APIENTRY
UserClipCursor(
RECTL *prcl)
{
/* FIXME: Check if process has WINSTA_WRITEATTRIBUTES */
PSYSTEM_CURSORINFO CurInfo;
PWND DesktopWindow = NULL;
CurInfo = IntGetSysCursorInfo();
DesktopWindow = UserGetDesktopWindow();
if (prcl != NULL && DesktopWindow != NULL)
{
if (prcl->right < prcl->left || prcl->bottom < prcl->top)
{
EngSetLastError(ERROR_INVALID_PARAMETER);
return FALSE;
}
CurInfo->bClipped = TRUE;
/* Set nw cliping region. Note: we can't use RECTL_bIntersectRect because
it sets rect to 0 0 0 0 when it's empty. For more info see monitor winetest */
CurInfo->rcClip.left = max(prcl->left, DesktopWindow->rcWindow.left);
CurInfo->rcClip.right = min(prcl->right, DesktopWindow->rcWindow.right);
if (CurInfo->rcClip.right < CurInfo->rcClip.left)
CurInfo->rcClip.right = CurInfo->rcClip.left;
CurInfo->rcClip.top = max(prcl->top, DesktopWindow->rcWindow.top);
CurInfo->rcClip.bottom = min(prcl->bottom, DesktopWindow->rcWindow.bottom);
if (CurInfo->rcClip.bottom < CurInfo->rcClip.top)
CurInfo->rcClip.bottom = CurInfo->rcClip.top;
/* Make sure cursor is in clipping region */
UserSetCursorPos(gpsi->ptCursor.x, gpsi->ptCursor.y, 0, 0, FALSE);
}
else
{
CurInfo->bClipped = FALSE;
}
return TRUE;
}
/*
* @implemented
*/
BOOL
APIENTRY
NtUserClipCursor(
RECTL *prcl)
{
RECTL rclLocal;
BOOL bResult;
if (prcl)
{
_SEH2_TRY
{
/* Probe and copy rect */
ProbeForRead(prcl, sizeof(RECTL), 1);
rclLocal = *prcl;
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
EngSetLastError(ERROR_INVALID_PARAMETER);
_SEH2_YIELD(return FALSE;)
}
_SEH2_END
prcl = &rclLocal;
}
UserEnterExclusive();
/* Call the internal function */
bResult = UserClipCursor(prcl);
UserLeave();
return bResult;
}
/*
* @implemented
*/
BOOL
APIENTRY
NtUserDestroyCursor(
_In_ HANDLE hCurIcon,
_In_ BOOL bForce)
{
PCURICON_OBJECT CurIcon;
BOOL ret;
DECLARE_RETURN(BOOL);
TRACE("Enter NtUserDestroyCursorIcon\n");
UserEnterExclusive();
if (!(CurIcon = UserGetCurIconObject(hCurIcon)))
{
RETURN(FALSE);
}
ret = IntDestroyCurIconObject(CurIcon, PsGetCurrentProcessWin32Process());
/* Note: IntDestroyCurIconObject will remove our reference for us! */
RETURN(ret);
CLEANUP:
TRACE("Leave NtUserDestroyCursorIcon, ret=%i\n",_ret_);
UserLeave();
END_CLEANUP;
}
/*
* @implemented
*/
HICON
APIENTRY
NtUserFindExistingCursorIcon(
HMODULE hModule,
HRSRC hRsrc,
LONG cx,
LONG cy)
{
PCURICON_OBJECT CurIcon;
HANDLE Ret = (HANDLE)0;
DECLARE_RETURN(HICON);
TRACE("Enter NtUserFindExistingCursorIcon\n");
UserEnterExclusive();
CurIcon = IntFindExistingCurIconObject(hModule, hRsrc, cx, cy);
if (CurIcon)
{
Ret = CurIcon->Self;
// IntReleaseCurIconObject(CurIcon); // FIXME: Is this correct? Does IntFindExistingCurIconObject add a ref?
RETURN(Ret);
}
EngSetLastError(ERROR_INVALID_CURSOR_HANDLE);
RETURN((HANDLE)0);
CLEANUP:
TRACE("Leave NtUserFindExistingCursorIcon, ret=%p\n",_ret_);
UserLeave();
END_CLEANUP;
}
/*
* @implemented
*/
BOOL
APIENTRY
NtUserGetClipCursor(
RECTL *lpRect)
{
/* FIXME: Check if process has WINSTA_READATTRIBUTES */
PSYSTEM_CURSORINFO CurInfo;
RECTL Rect;
NTSTATUS Status;
DECLARE_RETURN(BOOL);
TRACE("Enter NtUserGetClipCursor\n");
UserEnterExclusive();
if (!lpRect)
RETURN(FALSE);
CurInfo = IntGetSysCursorInfo();
if (CurInfo->bClipped)
{
Rect = CurInfo->rcClip;
}
else
{
Rect.left = 0;
Rect.top = 0;
Rect.right = UserGetSystemMetrics(SM_CXSCREEN);
Rect.bottom = UserGetSystemMetrics(SM_CYSCREEN);
}
Status = MmCopyToCaller(lpRect, &Rect, sizeof(RECT));
if (!NT_SUCCESS(Status))
{
SetLastNtError(Status);
RETURN(FALSE);
}
RETURN(TRUE);
CLEANUP:
TRACE("Leave NtUserGetClipCursor, ret=%i\n",_ret_);
UserLeave();
END_CLEANUP;
}
/*
* @implemented
*/
HCURSOR
APIENTRY
NtUserSetCursor(
HCURSOR hCursor)
{
PCURICON_OBJECT pcurOld, pcurNew;
HCURSOR hOldCursor = NULL;
TRACE("Enter NtUserSetCursor\n");
UserEnterExclusive();
if (hCursor)
{
pcurNew = UserGetCurIconObject(hCursor);
if (!pcurNew)
{
EngSetLastError(ERROR_INVALID_CURSOR_HANDLE);
goto leave;
}
}
else
{
pcurNew = NULL;
}
pcurOld = UserSetCursor(pcurNew, FALSE);
if (pcurOld)
{
hOldCursor = (HCURSOR)pcurOld->Self;
UserDereferenceObject(pcurOld);
}
leave:
UserLeave();
return hOldCursor;
}
/*
* @implemented
*/
BOOL
APIENTRY
NtUserSetCursorContents(
HANDLE hCurIcon,
PICONINFO UnsafeIconInfo)
{
PCURICON_OBJECT CurIcon;
ICONINFO IconInfo;
PSURFACE psurfBmp;
NTSTATUS Status;
BOOL Ret = FALSE;
DECLARE_RETURN(BOOL);
TRACE("Enter NtUserSetCursorContents\n");
UserEnterExclusive();
if (!(CurIcon = UserGetCurIconObject(hCurIcon)))
{
RETURN(FALSE);
}
/* Copy fields */
Status = MmCopyFromCaller(&IconInfo, UnsafeIconInfo, sizeof(ICONINFO));
if (!NT_SUCCESS(Status))
{
SetLastNtError(Status);
goto done;
}
/* Delete old bitmaps */
if ((CurIcon->IconInfo.hbmColor)
&& (CurIcon->IconInfo.hbmColor != IconInfo.hbmColor))
{
GreDeleteObject(CurIcon->IconInfo.hbmColor);
}
if ((CurIcon->IconInfo.hbmMask)
&& CurIcon->IconInfo.hbmMask != IconInfo.hbmMask)
{
GreDeleteObject(CurIcon->IconInfo.hbmMask);
}
/* Copy new IconInfo field */
CurIcon->IconInfo = IconInfo;
if (CurIcon->IconInfo.hbmColor)
{
psurfBmp = SURFACE_ShareLockSurface(CurIcon->IconInfo.hbmColor);
if (!psurfBmp)
goto done;
CurIcon->Size.cx = psurfBmp->SurfObj.sizlBitmap.cx;
CurIcon->Size.cy = psurfBmp->SurfObj.sizlBitmap.cy;
SURFACE_ShareUnlockSurface(psurfBmp);
GreSetObjectOwner(CurIcon->IconInfo.hbmColor, GDI_OBJ_HMGR_PUBLIC);
}
else
{
psurfBmp = SURFACE_ShareLockSurface(CurIcon->IconInfo.hbmMask);
if (!psurfBmp)
goto done;
CurIcon->Size.cx = psurfBmp->SurfObj.sizlBitmap.cx;
CurIcon->Size.cy = psurfBmp->SurfObj.sizlBitmap.cy / 2;
SURFACE_ShareUnlockSurface(psurfBmp);
}
GreSetObjectOwner(CurIcon->IconInfo.hbmMask, GDI_OBJ_HMGR_PUBLIC);
Ret = TRUE;
done:
if (CurIcon)
{
UserDereferenceObject(CurIcon);
}
RETURN(Ret);
CLEANUP:
TRACE("Leave NtUserSetCursorContents, ret=%i\n",_ret_);
UserLeave();
END_CLEANUP;
}
/*
* @implemented
*/
#if 0
BOOL
APIENTRY
NtUserSetCursorIconData(
HANDLE Handle,
HMODULE hModule,
PUNICODE_STRING pstrResName,
PICONINFO pIconInfo)
{
PCURICON_OBJECT CurIcon;
PSURFACE psurfBmp;
NTSTATUS Status = STATUS_SUCCESS;
BOOL Ret = FALSE;
DECLARE_RETURN(BOOL);
TRACE("Enter NtUserSetCursorIconData\n");
UserEnterExclusive();
if (!(CurIcon = UserGetCurIconObject(Handle)))
{
RETURN(FALSE);
}
CurIcon->hModule = hModule;
CurIcon->hRsrc = NULL; //hRsrc;
CurIcon->hGroupRsrc = NULL; //hGroupRsrc;
_SEH2_TRY
{
ProbeForRead(pIconInfo, sizeof(ICONINFO), 1);
RtlCopyMemory(&CurIcon->IconInfo, pIconInfo, sizeof(ICONINFO));
CurIcon->IconInfo.hbmMask = BITMAP_CopyBitmap(pIconInfo->hbmMask);
CurIcon->IconInfo.hbmColor = BITMAP_CopyBitmap(pIconInfo->hbmColor);
if (CurIcon->IconInfo.hbmColor)
{
if ((psurfBmp = SURFACE_LockSurface(CurIcon->IconInfo.hbmColor)))
{
CurIcon->Size.cx = psurfBmp->SurfObj.sizlBitmap.cx;
CurIcon->Size.cy = psurfBmp->SurfObj.sizlBitmap.cy;
SURFACE_UnlockSurface(psurfBmp);
GreSetObjectOwner(CurIcon->IconInfo.hbmMask, GDI_OBJ_HMGR_PUBLIC);
}
}
if (CurIcon->IconInfo.hbmMask)
{
if (CurIcon->IconInfo.hbmColor == NULL)
{
if ((psurfBmp = SURFACE_LockSurface(CurIcon->IconInfo.hbmMask)))
{
CurIcon->Size.cx = psurfBmp->SurfObj.sizlBitmap.cx;
CurIcon->Size.cy = psurfBmp->SurfObj.sizlBitmap.cy;
SURFACE_UnlockSurface(psurfBmp);
}
}
GreSetObjectOwner(CurIcon->IconInfo.hbmMask, GDI_OBJ_HMGR_PUBLIC);
}
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
Status = _SEH2_GetExceptionCode();
}
_SEH2_END
if (!NT_SUCCESS(Status))
SetLastNtError(Status);
else
Ret = TRUE;
UserDereferenceObject(CurIcon);
RETURN(Ret);
CLEANUP:
TRACE("Leave NtUserSetCursorIconData, ret=%i\n",_ret_);
UserLeave();
END_CLEANUP;
}
#else
BOOL
APIENTRY
NtUserSetCursorIconData(
HANDLE hCurIcon,
PBOOL fIcon,
POINT *Hotspot,
HMODULE hModule,
HRSRC hRsrc,
HRSRC hGroupRsrc)
{
PCURICON_OBJECT CurIcon;
NTSTATUS Status;
POINT SafeHotspot;
BOOL Ret = FALSE;
DECLARE_RETURN(BOOL);
TRACE("Enter NtUserSetCursorIconData\n");
UserEnterExclusive();
if (!(CurIcon = UserGetCurIconObject(hCurIcon)))
{
RETURN(FALSE);
}
CurIcon->hModule = hModule;
CurIcon->hRsrc = hRsrc;
CurIcon->hGroupRsrc = hGroupRsrc;
/* Copy fields */
if (fIcon)
{
Status = MmCopyFromCaller(&CurIcon->IconInfo.fIcon, fIcon, sizeof(BOOL));
if (!NT_SUCCESS(Status))
{
SetLastNtError(Status);
goto done;
}
}
else
{
if (!Hotspot)
Ret = TRUE;
}
if (Hotspot)
{
Status = MmCopyFromCaller(&SafeHotspot, Hotspot, sizeof(POINT));
if (NT_SUCCESS(Status))
{
CurIcon->IconInfo.xHotspot = SafeHotspot.x;
CurIcon->IconInfo.yHotspot = SafeHotspot.y;
Ret = TRUE;
}
else
SetLastNtError(Status);
}
if (!fIcon && !Hotspot)
{
Ret = TRUE;
}
done:
if(Ret)
{
/* This icon is shared now */
GreSetObjectOwner(CurIcon->IconInfo.hbmMask, GDI_OBJ_HMGR_PUBLIC);
if(CurIcon->IconInfo.hbmColor)
{
GreSetObjectOwner(CurIcon->IconInfo.hbmColor, GDI_OBJ_HMGR_PUBLIC);
}
}
UserDereferenceObject(CurIcon);
RETURN(Ret);
CLEANUP:
TRACE("Leave NtUserSetCursorIconData, ret=%i\n",_ret_);
UserLeave();
END_CLEANUP;
}
#endif
/* Mostly inspired from wine code.
* We use low level functions because:
* - at this point, the icon bitmap could have a different bit depth than the DC,
* making it thus impossible to use NtCreateCompatibleDC and selecting the bitmap.
* This happens after a mode setting change.
* - it avoids massive GDI objects locking when only the destination surface needs it.
* - It makes (small) performance gains.
*/
BOOL
UserDrawIconEx(
HDC hDc,
INT xLeft,
INT yTop,
PCURICON_OBJECT pIcon,
INT cxWidth,
INT cyHeight,
UINT istepIfAniCur,
HBRUSH hbrFlickerFreeDraw,
UINT diFlags)
{
PSURFACE psurfDest, psurfMask, psurfColor, psurfOffScreen;
PDC pdc = NULL;
BOOL Ret = FALSE;
HBITMAP hbmMask, hbmColor;
BOOL bOffScreen, bAlpha = FALSE;
RECTL rcDest, rcSrc;
CLIPOBJ* pdcClipObj = NULL;
EXLATEOBJ exlo;
/* Stupid case */
if((diFlags & DI_NORMAL) == 0)
{
ERR("DrawIconEx called without mask or color bitmap to draw.\n");
return FALSE;
}
hbmMask = pIcon->IconInfo.hbmMask;
hbmColor = pIcon->IconInfo.hbmColor;
if (istepIfAniCur)
ERR("NtUserDrawIconEx: istepIfAniCur is not supported!\n");
/*
* Get our objects.
* Shared locks are enough, we are only reading those bitmaps
*/
psurfMask = SURFACE_ShareLockSurface(hbmMask);
if(psurfMask == NULL)
{
ERR("Unable to lock the mask surface.\n");
return FALSE;
}
/* Color bitmap is not mandatory */
if(hbmColor == NULL)
{
/* But then the mask bitmap must have the information in it's bottom half */
ASSERT(psurfMask->SurfObj.sizlBitmap.cy == 2*pIcon->Size.cy);
psurfColor = NULL;
}
else if ((psurfColor = SURFACE_ShareLockSurface(hbmColor)) == NULL)
{
ERR("Unable to lock the color bitmap.\n");
SURFACE_ShareUnlockSurface(psurfMask);
return FALSE;
}
/* Set source rect */
RECTL_vSetRect(&rcSrc, 0, 0, pIcon->Size.cx, pIcon->Size.cy);
/* Check for alpha */
if (psurfColor &&
(psurfColor->SurfObj.iBitmapFormat == BMF_32BPP) &&
(diFlags & DI_IMAGE))
{
PFN_DIB_GetPixel fnSource_GetPixel = NULL;
INT i, j;
/* In order to correctly display 32 bit icons Windows first scans the image,
because information about transparency is not stored in any image's headers */
fnSource_GetPixel = DibFunctionsForBitmapFormat[BMF_32BPP].DIB_GetPixel;
for (i = 0; i < psurfColor->SurfObj.sizlBitmap.cx; i++)
{
for (j = 0; j < psurfColor->SurfObj.sizlBitmap.cy; j++)
{
bAlpha = ((BYTE)(fnSource_GetPixel(&psurfColor->SurfObj, i, j) >> 24) & 0xff);
if (bAlpha)
break;
}
if (bAlpha)
break;
}
}
/* Fix width parameter, if needed */
if (!cxWidth)
{
if(diFlags & DI_DEFAULTSIZE)
cxWidth = pIcon->IconInfo.fIcon ?
UserGetSystemMetrics(SM_CXICON) : UserGetSystemMetrics(SM_CXCURSOR);
else
cxWidth = pIcon->Size.cx;
}
/* Fix height parameter, if needed */
if (!cyHeight)
{
if(diFlags & DI_DEFAULTSIZE)
cyHeight = pIcon->IconInfo.fIcon ?
UserGetSystemMetrics(SM_CYICON) : UserGetSystemMetrics(SM_CYCURSOR);
else
cyHeight = pIcon->Size.cy;
}
/* Should we render off-screen? */
bOffScreen = hbrFlickerFreeDraw && (GDI_HANDLE_GET_TYPE(hbrFlickerFreeDraw) == GDI_OBJECT_TYPE_BRUSH);
if (bOffScreen)
{
/* Yes: Allocate and paint the offscreen surface */
EBRUSHOBJ eboFill;
PBRUSH pbrush = BRUSH_ShareLockBrush(hbrFlickerFreeDraw);
TRACE("Performing off-screen rendering.\n");
if(!pbrush)
{
ERR("Failed to get brush object.\n");
SURFACE_ShareUnlockSurface(psurfMask);
if(psurfColor) SURFACE_ShareUnlockSurface(psurfColor);
return FALSE;
}
if (!psurfColor)
{
ERR("Attention HAX FIX API DrawIconEx TEST Line 37: psurfColor is NULL going with Mask!\n");
psurfColor = SURFACE_ShareLockSurface(hbmMask);
}
psurfOffScreen = SURFACE_AllocSurface(STYPE_BITMAP,
cxWidth, cyHeight, psurfColor->SurfObj.iBitmapFormat,
0, 0, NULL);
if(!psurfOffScreen)
{
ERR("Failed to allocate the off-screen surface.\n");
SURFACE_ShareUnlockSurface(psurfMask);
if(psurfColor) SURFACE_ShareUnlockSurface(psurfColor);
BRUSH_ShareUnlockBrush(pbrush);
return FALSE;
}
/* Paint the brush */
EBRUSHOBJ_vInit(&eboFill, pbrush, psurfOffScreen, 0x00FFFFFF, 0, NULL);
RECTL_vSetRect(&rcDest, 0, 0, cxWidth, cyHeight);
Ret = IntEngBitBlt(&psurfOffScreen->SurfObj,
NULL,
NULL,
NULL,
NULL,
&rcDest,
NULL,
NULL,
&eboFill.BrushObject,
&pbrush->ptOrigin,
ROP4_PATCOPY);
/* Clean up everything */
EBRUSHOBJ_vCleanup(&eboFill);
BRUSH_ShareUnlockBrush(pbrush);
if(!Ret)
{
ERR("Failed to paint the off-screen surface.\n");
SURFACE_ShareUnlockSurface(psurfMask);
if(psurfColor) SURFACE_ShareUnlockSurface(psurfColor);
GDIOBJ_vDeleteObject(&psurfOffScreen->BaseObject);
return FALSE;
}
/* We now have our destination surface */
psurfDest = psurfOffScreen;
}
else
{
/* We directly draw to the DC */
TRACE("Performing on screen rendering.\n");
psurfOffScreen = NULL;
pdc = DC_LockDc(hDc);
if(!pdc)
{
ERR("Could not lock the destination DC.\n");
SURFACE_ShareUnlockSurface(psurfMask);
if(psurfColor) SURFACE_ShareUnlockSurface(psurfColor);
return FALSE;
}
/* Calculate destination rectangle */
RECTL_vSetRect(&rcDest, xLeft, yTop, xLeft + cxWidth, yTop + cyHeight);
IntLPtoDP(pdc, (LPPOINT)&rcDest, 2);
RECTL_vOffsetRect(&rcDest, pdc->ptlDCOrig.x, pdc->ptlDCOrig.y);
/* Prepare the underlying surface */
DC_vPrepareDCsForBlit(pdc, rcDest, NULL, rcDest);
/* Get the clip object */
pdcClipObj = pdc->rosdc.CombinedClip;
/* We now have our destination surface and rectangle */
psurfDest = pdc->dclevel.pSurface;
if(psurfDest == NULL)
{
/* Empty DC */
DC_vFinishBlit(pdc, NULL);
DC_UnlockDc(pdc);
SURFACE_ShareUnlockSurface(psurfMask);
if(psurfColor) SURFACE_ShareUnlockSurface(psurfColor);
return FALSE;
}
}
/* Now do the rendering */
if(bAlpha && (diFlags & DI_IMAGE))
{
BLENDOBJ blendobj = { {AC_SRC_OVER, 0, 255, AC_SRC_ALPHA } };
BYTE Alpha;
INT i, j;
PSURFACE psurf = NULL;
PBYTE ptr ;
HBITMAP hsurfCopy = NULL;
hsurfCopy = BITMAP_CopyBitmap(hbmColor);
if(!hsurfCopy)
{
ERR("BITMAP_CopyBitmap failed!");
goto CleanupAlpha;
}
psurf = SURFACE_ShareLockSurface(hsurfCopy);
if(!psurf)
{
ERR("SURFACE_LockSurface failed!\n");
goto CleanupAlpha;
}
/* Premultiply with the alpha channel value */
for (i = 0; i < psurf->SurfObj.sizlBitmap.cy; i++)
{
ptr = (PBYTE)psurf->SurfObj.pvScan0 + i*psurf->SurfObj.lDelta;
for (j = 0; j < psurf->SurfObj.sizlBitmap.cx; j++)
{
Alpha = ptr[3];
ptr[0] = (ptr[0] * Alpha) / 0xff;
ptr[1] = (ptr[1] * Alpha) / 0xff;
ptr[2] = (ptr[2] * Alpha) / 0xff;
ptr += 4;
}
}
/* Initialize color translation object */
EXLATEOBJ_vInitialize(&exlo, psurf->ppal, psurfDest->ppal, 0xFFFFFFFF, 0xFFFFFFFF, 0);
/* Now do it */
Ret = IntEngAlphaBlend(&psurfDest->SurfObj,
&psurf->SurfObj,
pdcClipObj,
&exlo.xlo,
&rcDest,
&rcSrc,
&blendobj);
EXLATEOBJ_vCleanup(&exlo);
CleanupAlpha:
if(psurf) SURFACE_ShareUnlockSurface(psurf);
if(hsurfCopy) NtGdiDeleteObjectApp(hsurfCopy);
if(Ret) goto done;
ERR("NtGdiAlphaBlend failed!\n");
}
if (diFlags & DI_MASK)
{
DWORD rop4 = (diFlags & DI_IMAGE) ? ROP4_SRCAND : ROP4_SRCCOPY;
EXLATEOBJ_vInitSrcMonoXlate(&exlo, psurfDest->ppal, 0x00FFFFFF, 0);
Ret = IntEngStretchBlt(&psurfDest->SurfObj,
&psurfMask->SurfObj,
NULL,
pdcClipObj,
&exlo.xlo,
NULL,
&rcDest,
&rcSrc,
NULL,
NULL,
NULL,
rop4);
EXLATEOBJ_vCleanup(&exlo);
if(!Ret)
{
ERR("Failed to mask the bitmap data.\n");
goto Cleanup;
}
}
if(diFlags & DI_IMAGE)
{
if (psurfColor)
{
DWORD rop4 = (diFlags & DI_MASK) ? ROP4_SRCINVERT : ROP4_SRCCOPY ;
EXLATEOBJ_vInitialize(&exlo, psurfColor->ppal, psurfDest->ppal, 0x00FFFFFF, 0x00FFFFFF, 0);
Ret = IntEngStretchBlt(&psurfDest->SurfObj,
&psurfColor->SurfObj,
NULL,
pdcClipObj,
&exlo.xlo,
NULL,
&rcDest,
&rcSrc,
NULL,
NULL,
NULL,
rop4);
EXLATEOBJ_vCleanup(&exlo);
if(!Ret)
{
ERR("Failed to render the icon bitmap.\n");
goto Cleanup;
}
}
else
{
/* Mask bitmap holds the information in its bottom half */
DWORD rop4 = (diFlags & DI_MASK) ? ROP4_SRCINVERT : ROP4_SRCCOPY;
RECTL_vOffsetRect(&rcSrc, 0, pIcon->Size.cy);
EXLATEOBJ_vInitSrcMonoXlate(&exlo, psurfDest->ppal, 0x00FFFFFF, 0);
Ret = IntEngStretchBlt(&psurfDest->SurfObj,
&psurfMask->SurfObj,
NULL,
pdcClipObj,
&exlo.xlo,
NULL,
&rcDest,
&rcSrc,
NULL,
NULL,
NULL,
rop4);
EXLATEOBJ_vCleanup(&exlo);
if(!Ret)
{
ERR("Failed to render the icon bitmap.\n");
goto Cleanup;
}
}
}
done:
/* We're done. Was it a double buffered draw ? */
if(bOffScreen)
{
/* Yes. Draw it back to our DC */
POINTL ptSrc = {0, 0};
pdc = DC_LockDc(hDc);
if(!pdc)
{
ERR("Could not lock the destination DC.\n");
return FALSE;
}
/* Calculate destination rectangle */
RECTL_vSetRect(&rcDest, xLeft, yTop, xLeft + cxWidth, yTop + cyHeight);
IntLPtoDP(pdc, (LPPOINT)&rcDest, 2);
RECTL_vOffsetRect(&rcDest, pdc->ptlDCOrig.x, pdc->ptlDCOrig.y);
/* Prepare the underlying surface */
DC_vPrepareDCsForBlit(pdc, rcDest, NULL, rcDest);
/* Get the clip object */
pdcClipObj = pdc->rosdc.CombinedClip;
/* We now have our destination surface and rectangle */
psurfDest = pdc->dclevel.pSurface;
if(!psurfDest)
{
/* So, you did all of this for an empty DC. */
DC_UnlockDc(pdc);
goto Cleanup2;
}
/* Color translation */
EXLATEOBJ_vInitialize(&exlo, psurfOffScreen->ppal, psurfDest->ppal, 0x00FFFFFF, 0x00FFFFFF, 0);
/* Blt it! */
Ret = IntEngBitBlt(&psurfDest->SurfObj,
&psurfOffScreen->SurfObj,
NULL,
pdcClipObj,
&exlo.xlo,
&rcDest,
&ptSrc,
NULL,
NULL,
NULL,
ROP4_SRCCOPY);
EXLATEOBJ_vCleanup(&exlo);
}
Cleanup:
if(pdc)
{
DC_vFinishBlit(pdc, NULL);
DC_UnlockDc(pdc);
}
Cleanup2:
/* Delete off screen rendering surface */
if(psurfOffScreen)
GDIOBJ_vDeleteObject(&psurfOffScreen->BaseObject);
/* Unlock other surfaces */
SURFACE_ShareUnlockSurface(psurfMask);
if(psurfColor) SURFACE_ShareUnlockSurface(psurfColor);
return Ret;
}
/*
* @implemented
*/
BOOL
APIENTRY
NtUserDrawIconEx(
HDC hdc,
int xLeft,
int yTop,
HICON hIcon,
int cxWidth,
int cyHeight,
UINT istepIfAniCur,
HBRUSH hbrFlickerFreeDraw,
UINT diFlags,
BOOL bMetaHDC, // When TRUE, GDI functions need to be handled in User32!
PVOID pDIXData)
{
PCURICON_OBJECT pIcon;
BOOL Ret;
TRACE("Enter NtUserDrawIconEx\n");
UserEnterExclusive();
if (!(pIcon = UserGetCurIconObject(hIcon)))
{
ERR("UserGetCurIconObject() failed!\n");
UserLeave();
return FALSE;
}
Ret = UserDrawIconEx(hdc,
xLeft,
yTop,
pIcon,
cxWidth,
cyHeight,
istepIfAniCur,
hbrFlickerFreeDraw,
diFlags);
UserDereferenceObject(pIcon);
UserLeave();
return Ret;
}
/* EOF */
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