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reactos/subsystems/win32/win32k/objects/cliprgn.c
Jérôme Gardou 40f4c114ee [WIN32K] 
- sync subsystems/win32/win32k.objects/cliprgn.c with trunk.

svn path=/branches/reactos-yarotows/; revision=47368
2010-05-26 23:04:02 +00:00

625 lines
14 KiB
C
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/*
* ReactOS W32 Subsystem
* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 ReactOS Team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include <win32k.h>
#define NDEBUG
#include <debug.h>
int FASTCALL
CLIPPING_UpdateGCRegion(DC* Dc)
{
PROSRGNDATA CombinedRegion;
HRGN hRgnVis = NULL;
// would prefer this, but the rest of the code sucks
// ASSERT(Dc->rosdc.hGCClipRgn);
// ASSERT(Dc->rosdc.hClipRgn);
if (!Dc->prgnVis)
{
DPRINT1("Warning, prgnVis is NULL!\n");
}
else
{
hRgnVis = Dc->prgnVis->BaseObject.hHmgr ;
}
if (Dc->rosdc.hGCClipRgn == NULL)
Dc->rosdc.hGCClipRgn = IntSysCreateRectRgn(0, 0, 0, 0);
if (Dc->rosdc.hClipRgn == NULL)
NtGdiCombineRgn(Dc->rosdc.hGCClipRgn, hRgnVis, 0, RGN_COPY);
else // FYI: Vis == NULL! source of "IntGdiCombineRgn requires hSrc2 != NULL for combine mode 1!"
NtGdiCombineRgn(Dc->rosdc.hGCClipRgn, Dc->rosdc.hClipRgn, hRgnVis, RGN_AND);
NtGdiOffsetRgn(Dc->rosdc.hGCClipRgn, Dc->ptlDCOrig.x, Dc->ptlDCOrig.y);
if((CombinedRegion = RGNOBJAPI_Lock(Dc->rosdc.hGCClipRgn, NULL)))
{
CLIPOBJ *CombinedClip;
CombinedClip = IntEngCreateClipRegion(CombinedRegion->rdh.nCount,
CombinedRegion->Buffer,
&CombinedRegion->rdh.rcBound);
RGNOBJAPI_Unlock(CombinedRegion);
if ( !CombinedClip )
{
DPRINT1("IntEngCreateClipRegion() failed\n");
return ERROR;
}
if(Dc->rosdc.CombinedClip != NULL)
IntEngDeleteClipRegion(Dc->rosdc.CombinedClip);
Dc->rosdc.CombinedClip = CombinedClip ;
}
return NtGdiOffsetRgn(Dc->rosdc.hGCClipRgn, -Dc->ptlDCOrig.x, -Dc->ptlDCOrig.y);
}
INT FASTCALL
GdiSelectVisRgn(HDC hdc, HRGN hrgn)
{
int retval;
DC *dc;
if (!hrgn)
{
SetLastWin32Error(ERROR_INVALID_PARAMETER);
return ERROR;
}
if (!(dc = DC_LockDc(hdc)))
{
SetLastWin32Error(ERROR_INVALID_HANDLE);
return ERROR;
}
dc->fs &= ~DC_FLAG_DIRTY_RAO;
if (dc->prgnVis == NULL)
{
dc->prgnVis = IntSysCreateRectpRgn(0, 0, 0, 0);
GDIOBJ_CopyOwnership(hdc, dc->prgnVis->BaseObject.hHmgr);
}
retval = NtGdiCombineRgn(dc->prgnVis->BaseObject.hHmgr, hrgn, 0, RGN_COPY);
if ( retval != ERROR )
{
IntGdiOffsetRgn(dc->prgnVis, -dc->ptlDCOrig.x, -dc->ptlDCOrig.y);
CLIPPING_UpdateGCRegion(dc);
}
DC_UnlockDc(dc);
return retval;
}
int FASTCALL GdiExtSelectClipRgn(PDC dc,
HRGN hrgn,
int fnMode)
{
// dc->fs &= ~DC_FLAG_DIRTY_RAO;
if (!hrgn)
{
if (fnMode == RGN_COPY)
{
if (dc->rosdc.hClipRgn != NULL)
{
REGION_FreeRgnByHandle(dc->rosdc.hClipRgn);
dc->rosdc.hClipRgn = NULL;
}
}
else
{
SetLastWin32Error(ERROR_INVALID_PARAMETER);
return ERROR;
}
}
else
{
if (!dc->rosdc.hClipRgn)
{
PROSRGNDATA Rgn;
RECTL rect;
if((Rgn = RGNOBJAPI_Lock(dc->prgnVis->BaseObject.hHmgr, NULL)))
{
REGION_GetRgnBox(Rgn, &rect);
RGNOBJAPI_Unlock(Rgn);
dc->rosdc.hClipRgn = IntSysCreateRectRgnIndirect(&rect);
}
else
{
dc->rosdc.hClipRgn = IntSysCreateRectRgn(0, 0, 0, 0);
}
}
if(fnMode == RGN_COPY)
{
NtGdiCombineRgn(dc->rosdc.hClipRgn, hrgn, 0, fnMode);
}
else
NtGdiCombineRgn(dc->rosdc.hClipRgn, dc->rosdc.hClipRgn, hrgn, fnMode);
}
return CLIPPING_UpdateGCRegion(dc);
}
int APIENTRY NtGdiExtSelectClipRgn(HDC hDC,
HRGN hrgn,
int fnMode)
{
int retval;
DC *dc;
if (!(dc = DC_LockDc(hDC)))
{
SetLastWin32Error(ERROR_INVALID_HANDLE);
return ERROR;
}
retval = GdiExtSelectClipRgn ( dc, hrgn, fnMode );
DC_UnlockDc(dc);
return retval;
}
INT FASTCALL
GdiGetClipBox(HDC hDC, PRECTL rc)
{
PROSRGNDATA Rgn;
INT retval;
PDC dc;
HRGN hRgnNew, hRgn = NULL;
if (!(dc = DC_LockDc(hDC)))
{
return ERROR;
}
/* FIXME! Rao and Vis only! */
if (dc->prgnAPI) // APIRGN
{
hRgn = ((PROSRGNDATA)dc->prgnAPI)->BaseObject.hHmgr;
}
else if (dc->dclevel.prgnMeta) // METARGN
{
hRgn = ((PROSRGNDATA)dc->dclevel.prgnMeta)->BaseObject.hHmgr;
}
else
{
hRgn = dc->rosdc.hClipRgn; // CLIPRGN
}
if (hRgn)
{
hRgnNew = IntSysCreateRectRgn( 0, 0, 0, 0 );
NtGdiCombineRgn(hRgnNew, dc->prgnVis->BaseObject.hHmgr, hRgn, RGN_AND);
if (!(Rgn = RGNOBJAPI_Lock(hRgnNew, NULL)))
{
DC_UnlockDc(dc);
return ERROR;
}
retval = REGION_GetRgnBox(Rgn, rc);
REGION_FreeRgnByHandle(hRgnNew);
RGNOBJAPI_Unlock(Rgn);
DC_UnlockDc(dc);
return retval;
}
if (!(Rgn = RGNOBJAPI_Lock(dc->prgnVis->BaseObject.hHmgr, NULL)))
{
DC_UnlockDc(dc);
return ERROR;
}
retval = REGION_GetRgnBox(Rgn, rc);
RGNOBJAPI_Unlock(Rgn);
IntDPtoLP(dc, (LPPOINT)rc, 2);
DC_UnlockDc(dc);
return retval;
}
INT APIENTRY
NtGdiGetAppClipBox(HDC hDC, PRECTL rc)
{
INT Ret;
NTSTATUS Status = STATUS_SUCCESS;
RECTL Saferect;
Ret = GdiGetClipBox(hDC, &Saferect);
_SEH2_TRY
{
ProbeForWrite(rc,
sizeof(RECT),
1);
*rc = Saferect;
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
Status = _SEH2_GetExceptionCode();
}
_SEH2_END;
if(!NT_SUCCESS(Status))
{
SetLastNtError(Status);
return ERROR;
}
return Ret;
}
int APIENTRY NtGdiExcludeClipRect(HDC hDC,
int LeftRect,
int TopRect,
int RightRect,
int BottomRect)
{
INT Result;
RECTL Rect;
HRGN NewRgn;
PDC dc = DC_LockDc(hDC);
if (!dc)
{
SetLastWin32Error(ERROR_INVALID_HANDLE);
return ERROR;
}
Rect.left = LeftRect;
Rect.top = TopRect;
Rect.right = RightRect;
Rect.bottom = BottomRect;
IntLPtoDP(dc, (LPPOINT)&Rect, 2);
NewRgn = IntSysCreateRectRgnIndirect(&Rect);
if (!NewRgn)
{
Result = ERROR;
}
else
{
if (!dc->rosdc.hClipRgn)
{
dc->rosdc.hClipRgn = IntSysCreateRectRgn(0, 0, 0, 0);
NtGdiCombineRgn(dc->rosdc.hClipRgn, dc->prgnVis->BaseObject.hHmgr, NewRgn, RGN_DIFF);
Result = SIMPLEREGION;
}
else
{
Result = NtGdiCombineRgn(dc->rosdc.hClipRgn, dc->rosdc.hClipRgn, NewRgn, RGN_DIFF);
}
REGION_FreeRgnByHandle(NewRgn);
}
if (Result != ERROR)
CLIPPING_UpdateGCRegion(dc);
DC_UnlockDc(dc);
return Result;
}
int APIENTRY NtGdiIntersectClipRect(HDC hDC,
int LeftRect,
int TopRect,
int RightRect,
int BottomRect)
{
INT Result;
RECTL Rect;
HRGN NewRgn;
PDC dc = DC_LockDc(hDC);
DPRINT("NtGdiIntersectClipRect(%x, %d,%d-%d,%d)\n",
hDC, LeftRect, TopRect, RightRect, BottomRect);
if (!dc)
{
SetLastWin32Error(ERROR_INVALID_HANDLE);
return ERROR;
}
Rect.left = LeftRect;
Rect.top = TopRect;
Rect.right = RightRect;
Rect.bottom = BottomRect;
IntLPtoDP(dc, (LPPOINT)&Rect, 2);
NewRgn = IntSysCreateRectRgnIndirect(&Rect);
if (!NewRgn)
{
Result = ERROR;
}
else if (!dc->rosdc.hClipRgn)
{
dc->rosdc.hClipRgn = NewRgn;
Result = SIMPLEREGION;
}
else
{
Result = NtGdiCombineRgn(dc->rosdc.hClipRgn, dc->rosdc.hClipRgn, NewRgn, RGN_AND);
REGION_FreeRgnByHandle(NewRgn);
}
if (Result != ERROR)
CLIPPING_UpdateGCRegion(dc);
DC_UnlockDc(dc);
return Result;
}
int APIENTRY NtGdiOffsetClipRgn(HDC hDC,
int XOffset,
int YOffset)
{
INT Result;
DC *dc;
if(!(dc = DC_LockDc(hDC)))
{
SetLastWin32Error(ERROR_INVALID_HANDLE);
return ERROR;
}
if(dc->rosdc.hClipRgn != NULL)
{
Result = NtGdiOffsetRgn(dc->rosdc.hClipRgn,
XOffset,
YOffset);
CLIPPING_UpdateGCRegion(dc);
}
else
{
Result = NULLREGION;
}
DC_UnlockDc(dc);
return Result;
}
BOOL APIENTRY NtGdiPtVisible(HDC hDC,
int X,
int Y)
{
HRGN rgn;
DC *dc;
if(!(dc = DC_LockDc(hDC)))
{
SetLastWin32Error(ERROR_INVALID_HANDLE);
return FALSE;
}
rgn = dc->rosdc.hGCClipRgn;
DC_UnlockDc(dc);
return (rgn ? NtGdiPtInRegion(rgn, X, Y) : FALSE);
}
BOOL APIENTRY NtGdiRectVisible(HDC hDC,
LPRECT UnsafeRect)
{
NTSTATUS Status = STATUS_SUCCESS;
PROSRGNDATA Rgn;
PDC dc = DC_LockDc(hDC);
BOOL Result = FALSE;
RECTL Rect;
if (!dc)
{
SetLastWin32Error(ERROR_INVALID_HANDLE);
return FALSE;
}
_SEH2_TRY
{
ProbeForRead(UnsafeRect,
sizeof(RECT),
1);
Rect = *UnsafeRect;
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
Status = _SEH2_GetExceptionCode();
}
_SEH2_END;
if(!NT_SUCCESS(Status))
{
DC_UnlockDc(dc);
SetLastNtError(Status);
return FALSE;
}
if (dc->rosdc.hGCClipRgn)
{
if((Rgn = (PROSRGNDATA)RGNOBJAPI_Lock(dc->rosdc.hGCClipRgn, NULL)))
{
IntLPtoDP(dc, (LPPOINT)&Rect, 2);
Result = REGION_RectInRegion(Rgn, &Rect);
RGNOBJAPI_Unlock(Rgn);
}
}
DC_UnlockDc(dc);
return Result;
}
int
FASTCALL
IntGdiSetMetaRgn(PDC pDC)
{
INT Ret = ERROR;
PROSRGNDATA TempRgn;
if ( pDC->dclevel.prgnMeta )
{
if ( pDC->dclevel.prgnClip )
{
TempRgn = IntSysCreateRectpRgn(0,0,0,0);
if (TempRgn)
{
Ret = IntGdiCombineRgn( TempRgn,
pDC->dclevel.prgnMeta,
pDC->dclevel.prgnClip,
RGN_AND);
if ( Ret )
{
GDIOBJ_ShareUnlockObjByPtr(pDC->dclevel.prgnMeta);
if (!((PROSRGNDATA)pDC->dclevel.prgnMeta)->BaseObject.ulShareCount)
REGION_Delete(pDC->dclevel.prgnMeta);
pDC->dclevel.prgnMeta = TempRgn;
GDIOBJ_ShareUnlockObjByPtr(pDC->dclevel.prgnClip);
if (!((PROSRGNDATA)pDC->dclevel.prgnClip)->BaseObject.ulShareCount)
REGION_Delete(pDC->dclevel.prgnClip);
pDC->dclevel.prgnClip = NULL;
IntGdiReleaseRaoRgn(pDC);
}
else
REGION_Delete(TempRgn);
}
}
else
Ret = REGION_Complexity(pDC->dclevel.prgnMeta);
}
else
{
if ( pDC->dclevel.prgnClip )
{
Ret = REGION_Complexity(pDC->dclevel.prgnClip);
pDC->dclevel.prgnMeta = pDC->dclevel.prgnClip;
pDC->dclevel.prgnClip = NULL;
}
else
Ret = SIMPLEREGION;
}
return Ret;
}
int APIENTRY NtGdiSetMetaRgn(HDC hDC)
{
INT Ret;
PDC pDC = DC_LockDc(hDC);
if (!pDC)
{
SetLastWin32Error(ERROR_INVALID_PARAMETER);
return ERROR;
}
Ret = IntGdiSetMetaRgn(pDC);
DC_UnlockDc(pDC);
return Ret;
}
INT FASTCALL
NEW_CLIPPING_UpdateGCRegion(PDC pDC)
{
CLIPOBJ * co;
/* Must have VisRgn set to a valid state! */
if (!pDC->prgnVis) return ERROR;
if (pDC->prgnAPI)
{
REGION_Delete(pDC->prgnAPI);
pDC->prgnAPI = IntSysCreateRectpRgn(0,0,0,0);
}
if (pDC->prgnRao)
{
REGION_Delete(pDC->prgnRao);
pDC->prgnRao = IntSysCreateRectpRgn(0,0,0,0);
}
if (pDC->dclevel.prgnMeta && pDC->dclevel.prgnClip)
{
IntGdiCombineRgn( pDC->prgnAPI,
pDC->dclevel.prgnClip,
pDC->dclevel.prgnMeta,
RGN_AND);
}
else
{
if (pDC->dclevel.prgnClip)
{
IntGdiCombineRgn( pDC->prgnAPI,
pDC->dclevel.prgnClip,
NULL,
RGN_COPY);
}
else if (pDC->dclevel.prgnMeta)
{
IntGdiCombineRgn( pDC->prgnAPI,
pDC->dclevel.prgnMeta,
NULL,
RGN_COPY);
}
}
IntGdiCombineRgn( pDC->prgnRao,
pDC->prgnVis,
pDC->prgnAPI,
RGN_AND);
RtlCopyMemory(&pDC->erclClip,
&((PROSRGNDATA)pDC->prgnRao)->rdh.rcBound,
sizeof(RECTL));
pDC->fs &= ~DC_FLAG_DIRTY_RAO;
IntGdiOffsetRgn(pDC->prgnRao, pDC->ptlDCOrig.x, pDC->ptlDCOrig.y);
// pDC->co should be used. Example, CLIPOBJ_cEnumStart uses XCLIPOBJ to build
// the rects from region objects rects in pClipRgn->Buffer.
// With pDC->co.pClipRgn->Buffer,
// pDC->co.pClipRgn = pDC->prgnRao ? pDC->prgnRao : pDC->prgnVis;
co = IntEngCreateClipRegion( ((PROSRGNDATA)pDC->prgnRao)->rdh.nCount,
((PROSRGNDATA)pDC->prgnRao)->Buffer,
&pDC->erclClip);
if (co)
{
if (pDC->rosdc.CombinedClip != NULL)
IntEngDeleteClipRegion(pDC->rosdc.CombinedClip);
pDC->rosdc.CombinedClip = co;
}
return IntGdiOffsetRgn(pDC->prgnRao, -pDC->ptlDCOrig.x, -pDC->ptlDCOrig.y);
}
/* EOF */
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