dmxgc.h revision 706f2543 
1/*
2 * Copyright 2001-2004 Red Hat Inc., Durham, North Carolina.
3 *
4 * All Rights Reserved.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining
7 * a copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation on the rights to use, copy, modify, merge,
10 * publish, distribute, sublicense, and/or sell copies of the Software,
11 * and to permit persons to whom the Software is furnished to do so,
12 * subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial
16 * portions of the Software.
17 *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
19 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
21 * NON-INFRINGEMENT.  IN NO EVENT SHALL RED HAT AND/OR THEIR SUPPLIERS
22 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
23 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
24 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
25 * SOFTWARE.
26 */
27
28/*
29 * Authors:
30 *   Kevin E. Martin <kem@redhat.com>
31 *
32 */
33
34/** \file
35 * Interface for GC support.  \see dmxgc.c */
36
37#ifndef DMXGC_H
38#define DMXGC_H
39
40#include "gcstruct.h"
41
42/** GC private area. */
43typedef struct _dmxGCPriv {
44    GCOps   *ops;
45    GCFuncs *funcs;
46    XlibGC   gc;
47    Bool     msc;
48} dmxGCPrivRec, *dmxGCPrivPtr;
49
50
51extern Bool dmxInitGC(ScreenPtr pScreen);
52
53extern Bool dmxCreateGC(GCPtr pGC);
54extern void dmxValidateGC(GCPtr pGC, unsigned long changes,
55			  DrawablePtr pDrawable);
56extern void dmxChangeGC(GCPtr pGC, unsigned long mask);
57extern void dmxCopyGC(GCPtr pGCSrc, unsigned long changes, GCPtr pGCDst);
58extern void dmxDestroyGC(GCPtr pGC);
59extern void dmxChangeClip(GCPtr pGC, int type, pointer pvalue, int nrects);
60extern void dmxDestroyClip(GCPtr pGC);
61extern void dmxCopyClip(GCPtr pGCDst, GCPtr pGCSrc);
62
63extern void dmxBECreateGC(ScreenPtr pScreen, GCPtr pGC);
64extern Bool dmxBEFreeGC(GCPtr pGC);
65
66/** Get private. */
67#define DMX_GET_GC_PRIV(_pGC)						\
68    (dmxGCPrivPtr)dixLookupPrivate(&(_pGC)->devPrivates, dmxGCPrivateKey)
69
70#define DMX_GC_FUNC_PROLOGUE(_pGC)					\
71do {									\
72    dmxGCPrivPtr _pGCPriv = DMX_GET_GC_PRIV(_pGC);			\
73    DMX_UNWRAP(funcs, _pGCPriv, (_pGC));				\
74    if (_pGCPriv->ops)							\
75	DMX_UNWRAP(ops, _pGCPriv, (_pGC));				\
76} while (0)
77
78#define DMX_GC_FUNC_EPILOGUE(_pGC)					\
79do {									\
80    dmxGCPrivPtr _pGCPriv = DMX_GET_GC_PRIV(_pGC);			\
81    DMX_WRAP(funcs, &dmxGCFuncs, _pGCPriv, (_pGC));			\
82    if (_pGCPriv->ops)							\
83	DMX_WRAP(ops, &dmxGCOps, _pGCPriv, (_pGC));			\
84} while (0)
85
86#endif /* DMXGC_H */
87