2 * PostScript clipping functions
4 * Copyright 1999 Luc Tourangau
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
22 #include "wine/debug.h"
25 WINE_DEFAULT_DEBUG_CHANNEL(psdrv);
27 /***********************************************************************
30 void PSDRV_AddClip( PHYSDEV dev, HRGN hrgn )
32 CHAR szArrayName[] = "clippath";
35 DWORD i, size = GetRegionData(hrgn, 0, NULL);
38 if (!(data = HeapAlloc( GetProcessHeap(), 0, size ))) return;
39 GetRegionData( hrgn, size, data );
40 rect = (RECT *)data->Buffer;
42 switch (data->rdh.nCount)
45 /* set an empty clip path. */
46 PSDRV_WriteRectClip(dev, 0, 0, 0, 0);
49 /* optimize when it is a simple region */
50 PSDRV_WriteRectClip(dev, rect->left, rect->top,
51 rect->right - rect->left, rect->bottom - rect->top);
54 PSDRV_WriteArrayDef(dev, szArrayName, data->rdh.nCount * 4);
55 for (i = 0; i < data->rdh.nCount; i++, rect++)
57 PSDRV_WriteArrayPut(dev, szArrayName, i * 4, rect->left);
58 PSDRV_WriteArrayPut(dev, szArrayName, i * 4 + 1, rect->top);
59 PSDRV_WriteArrayPut(dev, szArrayName, i * 4 + 2, rect->right - rect->left);
60 PSDRV_WriteArrayPut(dev, szArrayName, i * 4 + 3, rect->bottom - rect->top);
62 PSDRV_WriteRectClip2(dev, szArrayName);
65 HeapFree( GetProcessHeap(), 0, data );
68 /***********************************************************************
71 * The idea here is that every graphics operation should bracket
72 * output in PSDRV_SetClip/ResetClip calls. The clip path outside
73 * these calls will be empty; the reason for this is that it is
74 * impossible in PostScript to cleanly make the clip path larger than
75 * the current one. Also Photoshop assumes that despite having set a
76 * small clip area in the printer dc that it can still write raw
77 * PostScript to the driver and expect this code not to be clipped.
79 void PSDRV_SetClip( PHYSDEV dev )
81 PSDRV_PDEVICE *physDev = get_psdrv_dev( dev );
84 TRACE("hdc=%p\n", dev->hdc);
86 if(physDev->pathdepth) {
87 TRACE("inside a path, so not clipping\n");
91 hrgn = CreateRectRgn(0,0,0,0);
92 if (GetClipRgn(dev->hdc, hrgn))
94 PSDRV_WriteGSave(dev);
95 PSDRV_AddClip( dev, hrgn );
101 /***********************************************************************
104 void PSDRV_ResetClip( PHYSDEV dev )
106 PSDRV_PDEVICE *physDev = get_psdrv_dev( dev );
107 HRGN hrgn = CreateRectRgn(0,0,0,0);
110 empty = !GetClipRgn(dev->hdc, hrgn);
111 if(!empty && !physDev->pathdepth)
112 PSDRV_WriteGRestore(dev);