cliprgn.h File Reference

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Functions
	_Success_ (return!=ERROR) INT FASTCALL GdiGetClipBox(_In_ HDC hdc
VOID FASTCALL	GdiSelectVisRgn (HDC hdc, PREGION prgn)
INT FASTCALL	IntGdiExtSelectClipRgn (PDC dc, PREGION prgn, int fnMode)
VOID FASTCALL	CLIPPING_UpdateGCRegion (DC *Dc)
VOID FASTCALL	IntGdiReleaseRaoRgn (PDC)
VOID FASTCALL	IntGdiReleaseVisRgn (PDC)
VOID FASTCALL	UpdateVisRgn (PDC)
BOOL FASTCALL	REGION_bCopy (PREGION, PREGION)
BOOL FASTCALL	REGION_bIntersectRegion (PREGION, PREGION, PREGION)
int FASTCALL	IntGdiExtSelectClipRect (PDC, PRECTL, int)

Variables
_Out_ LPRECT	prc

Function Documentation

_Success_()

_Success_

(

return!

= ERROR

)

CLIPPING_UpdateGCRegion()

VOID FASTCALL CLIPPING_UpdateGCRegion

(

DC *

Dc

)

GdiSelectVisRgn()

VOID FASTCALL GdiSelectVisRgn	(	HDC	hdc,
		PREGION	prgn
	)

Definition at line 59 of file cliprgn.c.

{
    DC *dc;
 
    if (!(dc = DC_LockDc(hdc)))
    {
        EngSetLastError(ERROR_INVALID_HANDLE);
        return;
    }
 
    if (!prgn)
    {
       DPRINT1("SVR: Setting NULL Region\n");
       IntGdiReleaseVisRgn(dc);
       IntSetDefaultRegion(dc);
       DC_UnlockDc(dc);
       return;
    }
 
    dc->fs |= DC_DIRTY_RAO;
 
    ASSERT(dc->prgnVis != NULL);
    ASSERT(prgn != NULL);
 
    REGION_bCopy(dc->prgnVis, prgn);
    REGION_bOffsetRgn(dc->prgnVis, -dc->ptlDCOrig.x, -dc->ptlDCOrig.y);
 
    DC_UnlockDc(dc);
}

Referenced by DC_vUpdateDC(), and DceUpdateVisRgn().

IntGdiExtSelectClipRect()

int FASTCALL IntGdiExtSelectClipRect	(	PDC	,
		PRECTL	,
		int
	)

Referenced by GdiFlushUserBatch(), and NtGdiExtSelectClipRgn().

IntGdiExtSelectClipRgn()

INT FASTCALL IntGdiExtSelectClipRgn	(	PDC	dc,
		PREGION	prgn,
		int	fnMode
	)

Referenced by DC_vCopyState(), NtGdiExtSelectClipRgn(), and NtGdiSelectClipPath().

IntGdiReleaseRaoRgn()

VOID FASTCALL IntGdiReleaseRaoRgn

(

PDC

pDC

)

Definition at line 18 of file cliprgn.c.

{
    INT Index = GDI_HANDLE_GET_INDEX(pDC->BaseObject.hHmgr);
    PGDI_TABLE_ENTRY Entry = &GdiHandleTable->Entries[Index];
    pDC->fs |= DC_DIRTY_RAO;
    Entry->Flags |= GDI_ENTRY_VALIDATE_VIS; // Need to validate Vis.
}

Referenced by _Success_(), IntGdiReleaseVisRgn(), IntGdiSetMetaRgn(), IntSetDefaultRegion(), and NtGdiOffsetClipRgn().

IntGdiReleaseVisRgn()

VOID FASTCALL IntGdiReleaseVisRgn

(

PDC

pDC

)

Definition at line 28 of file cliprgn.c.

{
    IntGdiReleaseRaoRgn(pDC);
    REGION_Delete(pDC->prgnVis);
    pDC->prgnVis = prgnDefault; // Vis can not be NULL!!!
}

Referenced by GdiSelectVisRgn().

REGION_bCopy()

BOOL FASTCALL REGION_bCopy	(	PREGION	dst,
		PREGION	src
	)

Definition at line 1828 of file region.c.

{

Referenced by _Success_(), CLIPPING_UpdateGCRegion(), and GdiSelectVisRgn().

REGION_bIntersectRegion()

BOOL FASTCALL REGION_bIntersectRegion	(	PREGION	newReg,
		PREGION	reg1,
		PREGION	reg2
	)

Definition at line 1838 of file region.c.

{

Referenced by CLIPPING_UpdateGCRegion(), and IntGdiSetMetaRgn().

UpdateVisRgn()

VOID FASTCALL UpdateVisRgn

(

PDC

pdc

)

Definition at line 41 of file cliprgn.c.

{
    INT Index = GDI_HANDLE_GET_INDEX(pdc->BaseObject.hHmgr);
    PGDI_TABLE_ENTRY pEntry = &GdiHandleTable->Entries[Index];
 
    /* Setup Vis Region Attribute information to User side */
    pEntry->Flags |= GDI_ENTRY_VALIDATE_VIS;
    pdc->pdcattr->VisRectRegion.iComplexity = REGION_GetRgnBox(pdc->prgnVis, &pdc->pdcattr->VisRectRegion.Rect);
    pdc->pdcattr->VisRectRegion.AttrFlags = ATTR_RGN_VALID;
    pEntry->Flags &= ~GDI_ENTRY_VALIDATE_VIS;
}

Referenced by CLIPPING_UpdateGCRegion(), DC_vInitDc(), and NtGdiOffsetClipRgn().

Variable Documentation

prc

_Out_ LPRECT prc

Definition at line 8 of file cliprgn.h.