summaryrefslogtreecommitdiff
path: root/miext/layer/layergc.c
blob: b0153b49b59b1cbe5111b0b134fd459367a96269 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
/*
 * $XFree86: xc/programs/Xserver/miext/layer/layergc.c,v 1.4 2001/08/27 03:55:46 keithp Exp $
 *
 * Copyright © 2001 Keith Packard, member of The XFree86 Project, Inc.
 *
 * Permission to use, copy, modify, distribute, and sell this software and its
 * documentation for any purpose is hereby granted without fee, provided that
 * the above copyright notice appear in all copies and that both that
 * copyright notice and this permission notice appear in supporting
 * documentation, and that the name of Keith Packard not be used in
 * advertising or publicity pertaining to distribution of the software without
 * specific, written prior permission.  Keith Packard makes no
 * representations about the suitability of this software for any purpose.  It
 * is provided "as is" without express or implied warranty.
 *
 * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
 * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 * PERFORMANCE OF THIS SOFTWARE.
 */

#include "layerstr.h"

GCFuncs	layerGCFuncs = {
    layerValidateGC, layerChangeGC, layerCopyGC, layerDestroyGC,
    layerChangeClip, layerDestroyClip, layerCopyClip
};

#if 0
/*
 * XXX dont need this until this supports 
 * separate clipping and multiple layers
 */
GCOps layerGCOps = {
    layerFillSpans, layerSetSpans, 
    layerPutImage, layerCopyArea, 
    layerCopyPlane, layerPolyPoint, 
    layerPolylines, layerPolySegment, 
    layerPolyRectangle, layerPolyArc, 
    layerFillPolygon, layerPolyFillRect, 
    layerPolyFillArc, layerPolyText8, 
    layerPolyText16, layerImageText8, 
    layerImageText16, layerImageGlyphBlt, 
    layerPolyGlyphBlt, layerPushPixels,
#ifdef NEED_LINEHELPER
    NULL,
#endif
    {NULL}		/* devPrivate */
};
#endif

Bool
layerCreateGC (GCPtr pGC)
{
    Bool	    ret = TRUE;
    LayerKindPtr    pLayKind;
    ScreenPtr	    pScreen = pGC->pScreen;
    layerScrPriv(pScreen);
    layerGCPriv(pGC);
    
    /*
     * XXX assume the first layer can handle all GCs
     */
    pLayKind = &pLayScr->kinds[0];
    if (pLayScr->pLayers)
	pLayKind = pLayScr->pLayers->pKind;
    pLayGC->pKind = pLayKind;
    LayerUnwrap (pScreen,pLayGC->pKind,CreateGC);
    
    if (!(*pScreen->CreateGC) (pGC))
	ret = FALSE;
    LayerWrap (pScreen,pLayKind,CreateGC,layerCreateGC);

    LayerWrap (pGC,pLayGC,funcs,&layerGCFuncs);

    return ret;
}

void
layerValidateGC(GCPtr         pGC,
		unsigned long changes,
		DrawablePtr   pDraw)
{
    layerGCPriv(pGC);
    LayerKindPtr    pKind;
    
    if (pDraw->type == DRAWABLE_WINDOW)
    {
	layerWinPriv ((WindowPtr) pDraw);
	pKind = layerWinLayer (pLayWin)->pKind;
    }
    else
    {
	/* XXX assume the first layer can handle all pixmaps */
	layerScrPriv (pDraw->pScreen);
	pKind = &pLayScr->kinds[0];
	if (pLayScr->pLayers)
	    pKind = pLayScr->pLayers->pKind;
    }
    
    LayerUnwrap (pGC,pLayGC,funcs);
    if (pKind != pLayGC->pKind)
    {
	/*
	 * Clean up the previous user
	 */
	CreateGCProcPtr	CreateGC;
	(*pGC->funcs->DestroyGC) (pGC);
	
	pGC->serialNumber = GC_CHANGE_SERIAL_BIT;

	pLayGC->pKind = pKind;
	
	/*
	 * Temporarily unwrap Create GC and let
	 * the new code setup the GC 
	 */
	CreateGC = pGC->pScreen->CreateGC;
	LayerUnwrap (pGC->pScreen, pLayGC->pKind, CreateGC);
	(*pGC->pScreen->CreateGC) (pGC);
	LayerWrap (pGC->pScreen, pLayGC->pKind, CreateGC, CreateGC);
    }
    
    (*pGC->funcs->ValidateGC) (pGC, changes, pDraw);
    LayerWrap(pGC,pLayGC,funcs,&layerGCFuncs);
}

void
layerDestroyGC(GCPtr pGC)
{
    layerGCPriv(pGC);
    LayerUnwrap (pGC,pLayGC,funcs);
    (*pGC->funcs->DestroyGC)(pGC);
    LayerWrap(pGC,pLayGC,funcs,&layerGCFuncs);
}

void
layerChangeGC (GCPtr		pGC,
	       unsigned long	mask)
{
    layerGCPriv(pGC);
    LayerUnwrap (pGC,pLayGC,funcs);
    (*pGC->funcs->ChangeGC) (pGC, mask);
    LayerWrap(pGC,pLayGC,funcs,&layerGCFuncs);
}

void
layerCopyGC (GCPtr	    pGCSrc, 
	     unsigned long  mask,
	     GCPtr	    pGCDst)
{
    layerGCPriv(pGCDst);
    LayerUnwrap (pGCDst,pLayGC,funcs);
    (*pGCDst->funcs->CopyGC) (pGCSrc, mask, pGCDst);
    LayerWrap(pGCDst,pLayGC,funcs,&layerGCFuncs);
}

void
layerChangeClip (GCPtr	    pGC,
		 int	    type,
		 pointer    pvalue,
		 int	    nrects)
{
    layerGCPriv(pGC);
    LayerUnwrap (pGC,pLayGC,funcs);
    (*pGC->funcs->ChangeClip) (pGC, type, pvalue, nrects);
    LayerWrap(pGC,pLayGC,funcs,&layerGCFuncs);
}

void
layerCopyClip(GCPtr pGCDst, GCPtr pGCSrc)
{
    layerGCPriv(pGCDst);
    LayerUnwrap (pGCDst,pLayGC,funcs);
    (*pGCDst->funcs->CopyClip) (pGCDst, pGCSrc);
    LayerWrap(pGCDst,pLayGC,funcs,&layerGCFuncs);
}

void
layerDestroyClip(GCPtr pGC)
{
    layerGCPriv(pGC);
    LayerUnwrap (pGC,pLayGC,funcs);
    (*pGC->funcs->DestroyClip) (pGC);
    LayerWrap(pGC,pLayGC,funcs,&layerGCFuncs);
}