100 lines
2.8 KiB
C
100 lines
2.8 KiB
C
/*
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* PostScript clipping functions
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*
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* Copyright 1999 Luc Tourangau
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "gdi.h"
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#include "psdrv.h"
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#include "wine/debug.h"
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#include "winbase.h"
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WINE_DEFAULT_DEBUG_CHANNEL(psdrv);
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/***********************************************************************
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* PSDRV_SetDeviceClipping
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*/
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VOID PSDRV_SetDeviceClipping( DC *dc )
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{
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CHAR szArrayName[] = "clippath";
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DWORD size;
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RGNDATA *rgndata;
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TRACE("hdc=%04x\n", dc->hSelf);
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if (dc->hGCClipRgn == 0) {
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ERR("Rgn is 0. Please report this.\n");
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return;
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}
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size = GetRegionData(dc->hGCClipRgn, 0, NULL);
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if(!size) {
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ERR("Invalid region\n");
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return;
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}
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rgndata = HeapAlloc( GetProcessHeap(), 0, size );
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if(!rgndata) {
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ERR("Can't allocate buffer\n");
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return;
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}
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GetRegionData(dc->hGCClipRgn, size, rgndata);
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PSDRV_WriteInitClip(dc);
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/* check for NULL region */
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if (rgndata->rdh.nCount == 0)
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{
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/* set an empty clip path. */
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PSDRV_WriteRectClip(dc, 0, 0, 0, 0);
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}
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/* optimize when it is a simple region */
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else if (rgndata->rdh.nCount == 1)
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{
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RECT *pRect = (RECT *)rgndata->Buffer;
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PSDRV_WriteRectClip(dc, pRect->left, pRect->top,
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pRect->right - pRect->left,
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pRect->bottom - pRect->top);
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}
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else
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{
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INT i;
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RECT *pRect = (RECT *)rgndata->Buffer;
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PSDRV_WriteArrayDef(dc, szArrayName, rgndata->rdh.nCount * 4);
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for (i = 0; i < rgndata->rdh.nCount; i++, pRect++)
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{
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PSDRV_WriteArrayPut(dc, szArrayName, i * 4,
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pRect->left);
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PSDRV_WriteArrayPut(dc, szArrayName, i * 4 + 1,
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pRect->top);
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PSDRV_WriteArrayPut(dc, szArrayName, i * 4 + 2,
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pRect->right - pRect->left);
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PSDRV_WriteArrayPut(dc, szArrayName, i * 4 + 3,
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pRect->bottom - pRect->top);
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}
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PSDRV_WriteRectClip2(dc, szArrayName);
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}
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HeapFree( GetProcessHeap(), 0, rgndata );
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return;
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}
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