mirror of
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527f2f9057
* Create a branch for some evul shell experiments. svn path=/branches/shell-experiments/; revision=61927
620 lines
13 KiB
C
620 lines
13 KiB
C
/*
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* COPYRIGHT: GNU GPL, See COPYING in the top level directory
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* PROJECT: ReactOS Win32k subsystem
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* PURPOSE: Clip region functions
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* FILE: subsystems/win32/win32k/objects/cliprgn.c
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* PROGRAMER: Unknown
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*/
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#include <win32k.h>
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#define NDEBUG
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#include <debug.h>
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int FASTCALL
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CLIPPING_UpdateGCRegion(DC* Dc)
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{
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PROSRGNDATA CombinedRegion;
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//HRGN hRgnVis;
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PREGION prgnClip, prgnGCClip;
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/* Would prefer this, but the rest of the code sucks... */
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//ASSERT(Dc->rosdc.hGCClipRgn);
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//ASSERT(Dc->rosdc.hClipRgn);
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ASSERT(Dc->prgnVis);
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//hRgnVis = Dc->prgnVis->BaseObject.hHmgr;
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if (Dc->rosdc.hGCClipRgn == NULL)
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Dc->rosdc.hGCClipRgn = IntSysCreateRectRgn(0, 0, 0, 0);
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prgnGCClip = REGION_LockRgn(Dc->rosdc.hGCClipRgn);
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ASSERT(prgnGCClip);
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if (Dc->rosdc.hClipRgn == NULL)
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IntGdiCombineRgn(prgnGCClip, Dc->prgnVis, NULL, RGN_COPY);
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else
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{
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prgnClip = REGION_LockRgn(Dc->rosdc.hClipRgn); // FIXME: Locking order, ugh!
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IntGdiCombineRgn(prgnGCClip, Dc->prgnVis, prgnClip, RGN_AND);
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REGION_UnlockRgn(prgnClip);
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}
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REGION_UnlockRgn(prgnGCClip);
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NtGdiOffsetRgn(Dc->rosdc.hGCClipRgn, Dc->ptlDCOrig.x, Dc->ptlDCOrig.y);
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if((CombinedRegion = RGNOBJAPI_Lock(Dc->rosdc.hGCClipRgn, NULL)))
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{
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CLIPOBJ *CombinedClip;
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CombinedClip = IntEngCreateClipRegion(CombinedRegion->rdh.nCount,
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CombinedRegion->Buffer,
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&CombinedRegion->rdh.rcBound);
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RGNOBJAPI_Unlock(CombinedRegion);
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if ( !CombinedClip )
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{
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DPRINT1("IntEngCreateClipRegion() failed\n");
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return ERROR;
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}
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if(Dc->rosdc.CombinedClip != NULL)
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IntEngDeleteClipRegion(Dc->rosdc.CombinedClip);
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Dc->rosdc.CombinedClip = CombinedClip ;
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}
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return NtGdiOffsetRgn(Dc->rosdc.hGCClipRgn, -Dc->ptlDCOrig.x, -Dc->ptlDCOrig.y);
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}
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INT FASTCALL
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GdiSelectVisRgn(HDC hdc, HRGN hrgn)
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{
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int retval;
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DC *dc;
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PREGION prgn;
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if (!hrgn)
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{
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EngSetLastError(ERROR_INVALID_PARAMETER);
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return ERROR;
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}
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if (!(dc = DC_LockDc(hdc)))
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{
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EngSetLastError(ERROR_INVALID_HANDLE);
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return ERROR;
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}
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dc->fs &= ~DC_FLAG_DIRTY_RAO;
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ASSERT (dc->prgnVis != NULL);
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prgn = RGNOBJAPI_Lock(hrgn, NULL);
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retval = prgn ? IntGdiCombineRgn(dc->prgnVis, prgn, NULL, RGN_COPY) : ERROR;
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RGNOBJAPI_Unlock(prgn);
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if ( retval != ERROR )
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{
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IntGdiOffsetRgn(dc->prgnVis, -dc->ptlDCOrig.x, -dc->ptlDCOrig.y);
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CLIPPING_UpdateGCRegion(dc);
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}
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DC_UnlockDc(dc);
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return retval;
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}
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int FASTCALL GdiExtSelectClipRgn(PDC dc,
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HRGN hrgn,
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int fnMode)
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{
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// dc->fs &= ~DC_FLAG_DIRTY_RAO;
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if (!hrgn)
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{
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if (fnMode == RGN_COPY)
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{
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if (dc->rosdc.hClipRgn != NULL)
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{
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GreDeleteObject(dc->rosdc.hClipRgn);
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dc->rosdc.hClipRgn = NULL;
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}
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}
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else
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{
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EngSetLastError(ERROR_INVALID_PARAMETER);
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return ERROR;
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}
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}
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else
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{
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if (!dc->rosdc.hClipRgn)
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{
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RECTL rect;
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if(dc->prgnVis)
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{
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REGION_GetRgnBox(dc->prgnVis, &rect);
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dc->rosdc.hClipRgn = IntSysCreateRectRgnIndirect(&rect);
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}
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else
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{
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dc->rosdc.hClipRgn = IntSysCreateRectRgn(0, 0, 0, 0);
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}
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}
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if(fnMode == RGN_COPY)
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{
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NtGdiCombineRgn(dc->rosdc.hClipRgn, hrgn, 0, fnMode);
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}
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else
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NtGdiCombineRgn(dc->rosdc.hClipRgn, dc->rosdc.hClipRgn, hrgn, fnMode);
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}
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return CLIPPING_UpdateGCRegion(dc);
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}
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int APIENTRY NtGdiExtSelectClipRgn(HDC hDC,
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HRGN hrgn,
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int fnMode)
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{
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int retval;
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DC *dc;
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if (!(dc = DC_LockDc(hDC)))
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{
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EngSetLastError(ERROR_INVALID_HANDLE);
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return ERROR;
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}
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retval = GdiExtSelectClipRgn ( dc, hrgn, fnMode );
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DC_UnlockDc(dc);
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return retval;
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}
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INT FASTCALL
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GdiGetClipBox(HDC hDC, PRECTL rc)
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{
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INT retval;
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PDC dc;
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PROSRGNDATA pRgnNew, pRgn = NULL;
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BOOL Unlock = FALSE; // Small HACK
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if (!(dc = DC_LockDc(hDC)))
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{
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return ERROR;
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}
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/* FIXME: Rao and Vis only! */
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if (dc->prgnAPI) // APIRGN
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{
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pRgn = dc->prgnAPI;
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}
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else if (dc->dclevel.prgnMeta) // METARGN
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{
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pRgn = dc->dclevel.prgnMeta;
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}
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else if (dc->rosdc.hClipRgn)
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{
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Unlock = TRUE ;
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pRgn = REGION_LockRgn(dc->rosdc.hClipRgn); // CLIPRGN
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}
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if (pRgn)
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{
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pRgnNew = IntSysCreateRectpRgn( 0, 0, 0, 0 );
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if (!pRgnNew)
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{
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DC_UnlockDc(dc);
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if(Unlock) REGION_UnlockRgn(pRgn);
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return ERROR;
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}
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IntGdiCombineRgn(pRgnNew, dc->prgnVis, pRgn, RGN_AND);
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retval = REGION_GetRgnBox(pRgnNew, rc);
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REGION_Delete(pRgnNew);
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DC_UnlockDc(dc);
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if(Unlock) REGION_UnlockRgn(pRgn);
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return retval;
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}
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retval = REGION_GetRgnBox(dc->prgnVis, rc);
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IntDPtoLP(dc, (LPPOINT)rc, 2);
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DC_UnlockDc(dc);
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return retval;
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}
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INT APIENTRY
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NtGdiGetAppClipBox(HDC hDC, PRECTL rc)
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{
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INT Ret;
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NTSTATUS Status = STATUS_SUCCESS;
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RECTL Saferect;
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Ret = GdiGetClipBox(hDC, &Saferect);
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_SEH2_TRY
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{
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ProbeForWrite(rc,
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sizeof(RECT),
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1);
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*rc = Saferect;
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}
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_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
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{
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Status = _SEH2_GetExceptionCode();
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}
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_SEH2_END;
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if(!NT_SUCCESS(Status))
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{
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SetLastNtError(Status);
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return ERROR;
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}
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return Ret;
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}
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int APIENTRY NtGdiExcludeClipRect(HDC hDC,
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int LeftRect,
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int TopRect,
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int RightRect,
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int BottomRect)
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{
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INT Result;
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RECTL Rect;
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PREGION prgnNew, prgnClip;
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PDC dc = DC_LockDc(hDC);
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if (!dc)
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{
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EngSetLastError(ERROR_INVALID_HANDLE);
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return ERROR;
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}
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Rect.left = LeftRect;
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Rect.top = TopRect;
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Rect.right = RightRect;
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Rect.bottom = BottomRect;
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IntLPtoDP(dc, (LPPOINT)&Rect, 2);
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prgnNew = IntSysCreateRectpRgnIndirect(&Rect);
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if (!prgnNew)
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{
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Result = ERROR;
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}
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else
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{
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if (!dc->rosdc.hClipRgn)
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{
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dc->rosdc.hClipRgn = IntSysCreateRectRgn(0, 0, 0, 0);
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prgnClip = REGION_LockRgn(dc->rosdc.hClipRgn);
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IntGdiCombineRgn(prgnClip, dc->prgnVis, prgnNew, RGN_DIFF);
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REGION_UnlockRgn(prgnClip);
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Result = SIMPLEREGION;
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}
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else
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{
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prgnClip = REGION_LockRgn(dc->rosdc.hClipRgn);
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Result = IntGdiCombineRgn(prgnClip, prgnClip, prgnNew, RGN_DIFF);
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REGION_UnlockRgn(prgnClip);
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}
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REGION_Delete(prgnNew);
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}
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if (Result != ERROR)
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CLIPPING_UpdateGCRegion(dc);
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DC_UnlockDc(dc);
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return Result;
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}
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int APIENTRY NtGdiIntersectClipRect(HDC hDC,
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int LeftRect,
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int TopRect,
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int RightRect,
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int BottomRect)
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{
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INT Result;
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RECTL Rect;
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HRGN NewRgn;
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PDC dc = DC_LockDc(hDC);
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DPRINT("NtGdiIntersectClipRect(%p, %d,%d-%d,%d)\n",
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hDC, LeftRect, TopRect, RightRect, BottomRect);
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if (!dc)
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{
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EngSetLastError(ERROR_INVALID_HANDLE);
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return ERROR;
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}
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Rect.left = LeftRect;
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Rect.top = TopRect;
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Rect.right = RightRect;
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Rect.bottom = BottomRect;
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IntLPtoDP(dc, (LPPOINT)&Rect, 2);
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NewRgn = IntSysCreateRectRgnIndirect(&Rect);
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if (!NewRgn)
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{
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Result = ERROR;
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}
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else if (!dc->rosdc.hClipRgn)
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{
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dc->rosdc.hClipRgn = NewRgn;
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Result = SIMPLEREGION;
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}
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else
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{
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Result = NtGdiCombineRgn(dc->rosdc.hClipRgn, dc->rosdc.hClipRgn, NewRgn, RGN_AND);
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GreDeleteObject(NewRgn);
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}
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if (Result != ERROR)
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CLIPPING_UpdateGCRegion(dc);
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DC_UnlockDc(dc);
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return Result;
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}
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int APIENTRY NtGdiOffsetClipRgn(HDC hDC,
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int XOffset,
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int YOffset)
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{
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INT Result;
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DC *dc;
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if(!(dc = DC_LockDc(hDC)))
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{
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EngSetLastError(ERROR_INVALID_HANDLE);
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return ERROR;
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}
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if(dc->rosdc.hClipRgn != NULL)
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{
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Result = NtGdiOffsetRgn(dc->rosdc.hClipRgn,
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XOffset,
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YOffset);
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CLIPPING_UpdateGCRegion(dc);
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}
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else
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{
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Result = NULLREGION;
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}
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DC_UnlockDc(dc);
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return Result;
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}
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BOOL APIENTRY NtGdiPtVisible(HDC hDC,
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int X,
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int Y)
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{
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HRGN rgn;
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DC *dc;
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if(!(dc = DC_LockDc(hDC)))
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{
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EngSetLastError(ERROR_INVALID_HANDLE);
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return FALSE;
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}
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rgn = dc->rosdc.hGCClipRgn;
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DC_UnlockDc(dc);
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return (rgn ? NtGdiPtInRegion(rgn, X, Y) : FALSE);
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}
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BOOL APIENTRY NtGdiRectVisible(HDC hDC,
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LPRECT UnsafeRect)
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{
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NTSTATUS Status = STATUS_SUCCESS;
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PROSRGNDATA Rgn;
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PDC dc = DC_LockDc(hDC);
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BOOL Result = FALSE;
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RECTL Rect;
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if (!dc)
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{
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EngSetLastError(ERROR_INVALID_HANDLE);
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return FALSE;
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}
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_SEH2_TRY
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{
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ProbeForRead(UnsafeRect,
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sizeof(RECT),
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1);
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Rect = *UnsafeRect;
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}
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_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
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{
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Status = _SEH2_GetExceptionCode();
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}
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_SEH2_END;
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if(!NT_SUCCESS(Status))
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{
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DC_UnlockDc(dc);
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SetLastNtError(Status);
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return FALSE;
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}
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if (dc->rosdc.hGCClipRgn)
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{
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if((Rgn = (PROSRGNDATA)RGNOBJAPI_Lock(dc->rosdc.hGCClipRgn, NULL)))
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{
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IntLPtoDP(dc, (LPPOINT)&Rect, 2);
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Result = REGION_RectInRegion(Rgn, &Rect);
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RGNOBJAPI_Unlock(Rgn);
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}
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}
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DC_UnlockDc(dc);
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return Result;
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}
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int
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FASTCALL
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IntGdiSetMetaRgn(PDC pDC)
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{
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INT Ret = ERROR;
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PROSRGNDATA TempRgn;
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if ( pDC->dclevel.prgnMeta )
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{
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if ( pDC->dclevel.prgnClip )
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{
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TempRgn = IntSysCreateRectpRgn(0,0,0,0);
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if (TempRgn)
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{
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Ret = IntGdiCombineRgn( TempRgn,
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pDC->dclevel.prgnMeta,
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pDC->dclevel.prgnClip,
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RGN_AND);
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if ( Ret )
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{
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GDIOBJ_vDereferenceObject(&pDC->dclevel.prgnMeta->BaseObject);
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if (!((PROSRGNDATA)pDC->dclevel.prgnMeta)->BaseObject.ulShareCount)
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REGION_Delete(pDC->dclevel.prgnMeta);
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pDC->dclevel.prgnMeta = TempRgn;
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GDIOBJ_vDereferenceObject(&pDC->dclevel.prgnClip->BaseObject);
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if (!((PROSRGNDATA)pDC->dclevel.prgnClip)->BaseObject.ulShareCount)
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REGION_Delete(pDC->dclevel.prgnClip);
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pDC->dclevel.prgnClip = NULL;
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IntGdiReleaseRaoRgn(pDC);
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}
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else
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REGION_Delete(TempRgn);
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}
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}
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else
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Ret = REGION_Complexity(pDC->dclevel.prgnMeta);
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}
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else
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{
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if ( pDC->dclevel.prgnClip )
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{
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Ret = REGION_Complexity(pDC->dclevel.prgnClip);
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pDC->dclevel.prgnMeta = pDC->dclevel.prgnClip;
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pDC->dclevel.prgnClip = NULL;
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}
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else
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Ret = SIMPLEREGION;
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}
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return Ret;
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}
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int APIENTRY NtGdiSetMetaRgn(HDC hDC)
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{
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INT Ret;
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PDC pDC = DC_LockDc(hDC);
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if (!pDC)
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{
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EngSetLastError(ERROR_INVALID_PARAMETER);
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return ERROR;
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}
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Ret = IntGdiSetMetaRgn(pDC);
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DC_UnlockDc(pDC);
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return Ret;
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}
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INT FASTCALL
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NEW_CLIPPING_UpdateGCRegion(PDC pDC)
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{
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CLIPOBJ * co;
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/* Must have VisRgn set to a valid state! */
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ASSERT (pDC->prgnVis);
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// FIXME: this seems to be broken!
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if (pDC->prgnAPI)
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{
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REGION_Delete(pDC->prgnAPI);
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pDC->prgnAPI = IntSysCreateRectpRgn(0,0,0,0);
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}
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if (pDC->prgnRao)
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{
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REGION_Delete(pDC->prgnRao);
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pDC->prgnRao = IntSysCreateRectpRgn(0,0,0,0);
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}
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if (!pDC->prgnRao)
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{
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return ERROR;
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}
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if (pDC->dclevel.prgnMeta && pDC->dclevel.prgnClip)
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{
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IntGdiCombineRgn( pDC->prgnAPI,
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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,
|
|
&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(pDC->prgnRao->rdh.nCount,
|
|
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 */
|