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a45df5d991
graphics output event. Doing it this way means we don't ever need to call initclip which is a Good Thing.
131 lines
4.1 KiB
C
131 lines
4.1 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 "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( PSDRV_PDEVICE *physDev, HRGN ignored )
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{
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/* We could set a dirty flag here to speed up PSDRV_SetClip */
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return;
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}
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/***********************************************************************
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* PSDRV_SetClip
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*
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* The idea here is that every graphics operation should bracket
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* output in PSDRV_SetClip/ResetClip calls. The clip path outside
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* these calls will be empty; the reason for this is that it is
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* impossible in PostScript to cleanly make the clip path larger than
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* the current one. Also Photoshop assumes that despite having set a
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* small clip area in the printer dc that it can still write raw
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* PostScript to the driver and expect this code not to be clipped.
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*/
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void PSDRV_SetClip( PSDRV_PDEVICE *physDev )
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{
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CHAR szArrayName[] = "clippath";
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DWORD size;
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RGNDATA *rgndata = NULL;
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HRGN hrgn = CreateRectRgn(0,0,0,0);
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BOOL empty;
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TRACE("hdc=%p\n", physDev->hdc);
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empty = !GetClipRgn(physDev->hdc, hrgn);
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if(!empty) {
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size = GetRegionData(hrgn, 0, NULL);
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if(!size) {
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ERR("Invalid region\n");
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goto end;
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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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goto end;
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}
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GetRegionData(hrgn, size, rgndata);
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PSDRV_WriteGSave(physDev);
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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(physDev, 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(physDev, 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(physDev, 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(physDev, szArrayName, i * 4,
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pRect->left);
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PSDRV_WriteArrayPut(physDev, szArrayName, i * 4 + 1,
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pRect->top);
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PSDRV_WriteArrayPut(physDev, szArrayName, i * 4 + 2,
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pRect->right - pRect->left);
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PSDRV_WriteArrayPut(physDev, szArrayName, i * 4 + 3,
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pRect->bottom - pRect->top);
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}
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PSDRV_WriteRectClip2(physDev, szArrayName);
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}
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}
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end:
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if(rgndata) HeapFree( GetProcessHeap(), 0, rgndata );
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DeleteObject(hrgn);
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}
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/***********************************************************************
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* PSDRV_ResetClip
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*/
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void PSDRV_ResetClip( PSDRV_PDEVICE *physDev )
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{
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HRGN hrgn = CreateRectRgn(0,0,0,0);
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BOOL empty;
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empty = !GetClipRgn(physDev->hdc, hrgn);
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if(!empty)
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PSDRV_WriteGRestore(physDev);
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DeleteObject(hrgn);
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}
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