forked from Mirrors/wine-wine
116 lines
3.7 KiB
C
116 lines
3.7 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, 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_AddClip
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*/
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void PSDRV_AddClip( PHYSDEV dev, HRGN hrgn )
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{
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CHAR szArrayName[] = "clippath";
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RECT *rect;
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RGNDATA *data;
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DWORD i, size = GetRegionData(hrgn, 0, NULL);
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if (!size) return;
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if (!(data = HeapAlloc( GetProcessHeap(), 0, size ))) return;
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GetRegionData( hrgn, size, data );
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rect = (RECT *)data->Buffer;
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switch (data->rdh.nCount)
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{
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case 0:
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/* set an empty clip path. */
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PSDRV_WriteRectClip(dev, 0, 0, 0, 0);
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break;
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case 1:
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/* optimize when it is a simple region */
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PSDRV_WriteRectClip(dev, rect->left, rect->top,
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rect->right - rect->left, rect->bottom - rect->top);
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break;
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default:
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PSDRV_WriteArrayDef(dev, szArrayName, data->rdh.nCount * 4);
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for (i = 0; i < data->rdh.nCount; i++, rect++)
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{
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PSDRV_WriteArrayPut(dev, szArrayName, i * 4, rect->left);
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PSDRV_WriteArrayPut(dev, szArrayName, i * 4 + 1, rect->top);
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PSDRV_WriteArrayPut(dev, szArrayName, i * 4 + 2, rect->right - rect->left);
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PSDRV_WriteArrayPut(dev, szArrayName, i * 4 + 3, rect->bottom - rect->top);
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}
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PSDRV_WriteRectClip2(dev, szArrayName);
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break;
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}
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HeapFree( GetProcessHeap(), 0, data );
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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( PHYSDEV dev )
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{
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PSDRV_PDEVICE *physDev = get_psdrv_dev( dev );
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HRGN hrgn;
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TRACE("hdc=%p\n", dev->hdc);
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if(physDev->pathdepth) {
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TRACE("inside a path, so not clipping\n");
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return;
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}
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hrgn = CreateRectRgn(0, 0, 0, 0);
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if (GetRandomRgn(dev->hdc, hrgn, 3) == 1) /* clip && meta */
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{
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PSDRV_WriteGSave(dev);
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PSDRV_AddClip( dev, hrgn );
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}
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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( PHYSDEV dev )
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{
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PSDRV_PDEVICE *physDev = get_psdrv_dev( dev );
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HRGN hrgn;
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if (physDev->pathdepth) return;
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hrgn = CreateRectRgn(0, 0, 0, 0);
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if (GetRandomRgn(dev->hdc, hrgn, 3) == 1) /* clip && meta */
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PSDRV_WriteGRestore(dev);
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DeleteObject(hrgn);
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}
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