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
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
|
/* $Xorg: migc.c,v 1.4 2001/02/09 02:05:21 xorgcvs Exp $ */
/*
Copyright 1993, 1998 The Open Group
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.
The above copyright notice and this permission notice shall be included
in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR
OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
OTHER DEALINGS IN THE SOFTWARE.
Except as contained in this notice, the name of The Open Group shall
not be used in advertising or otherwise to promote the sale, use or
other dealings in this Software without prior written authorization
from The Open Group.
*/
/* $XFree86$ */
#include "scrnintstr.h"
#include "gcstruct.h"
#include "pixmapstr.h"
#include "windowstr.h"
#include "migc.h"
/* ARGSUSED */
void
miChangeGC(pGC, mask)
GCPtr pGC;
unsigned long mask;
{
return;
}
void
miDestroyGC(pGC)
GCPtr pGC;
{
if (pGC->pRotatedPixmap)
(*pGC->pScreen->DestroyPixmap) (pGC->pRotatedPixmap);
if (pGC->freeCompClip)
REGION_DESTROY(pGC->pScreen, pGC->pCompositeClip);
miDestroyGCOps(pGC->ops);
}
/*
* create a private op array for a gc
*/
GCOpsPtr
miCreateGCOps(prototype)
GCOpsPtr prototype;
{
GCOpsPtr ret;
/* XXX */ Must_have_memory = TRUE;
ret = (GCOpsPtr) xalloc(sizeof(GCOps));
/* XXX */ Must_have_memory = FALSE;
if (!ret)
return 0;
*ret = *prototype;
ret->devPrivate.val = 1;
return ret;
}
void
miDestroyGCOps(ops)
GCOpsPtr ops;
{
if (ops->devPrivate.val)
xfree(ops);
}
void
miDestroyClip(pGC)
GCPtr pGC;
{
if (pGC->clientClipType == CT_NONE)
return;
else if (pGC->clientClipType == CT_PIXMAP)
{
(*pGC->pScreen->DestroyPixmap) ((PixmapPtr) (pGC->clientClip));
}
else
{
/*
* we know we'll never have a list of rectangles, since ChangeClip
* immediately turns them into a region
*/
REGION_DESTROY(pGC->pScreen, pGC->clientClip);
}
pGC->clientClip = NULL;
pGC->clientClipType = CT_NONE;
}
void
miChangeClip(pGC, type, pvalue, nrects)
GCPtr pGC;
int type;
pointer pvalue;
int nrects;
{
(*pGC->funcs->DestroyClip) (pGC);
if (type == CT_PIXMAP)
{
/* convert the pixmap to a region */
pGC->clientClip = (pointer) BITMAP_TO_REGION(pGC->pScreen,
(PixmapPtr) pvalue);
(*pGC->pScreen->DestroyPixmap) (pvalue);
}
else if (type == CT_REGION)
{
/* stuff the region in the GC */
pGC->clientClip = pvalue;
}
else if (type != CT_NONE)
{
pGC->clientClip = (pointer) RECTS_TO_REGION(pGC->pScreen, nrects,
(xRectangle *) pvalue,
type);
xfree(pvalue);
}
pGC->clientClipType = (type != CT_NONE && pGC->clientClip) ? CT_REGION : CT_NONE;
pGC->stateChanges |= GCClipMask;
}
void
miCopyClip(pgcDst, pgcSrc)
GCPtr pgcDst, pgcSrc;
{
RegionPtr prgnNew;
switch (pgcSrc->clientClipType)
{
case CT_PIXMAP:
((PixmapPtr) pgcSrc->clientClip)->refcnt++;
/* Fall through !! */
case CT_NONE:
(*pgcDst->funcs->ChangeClip) (pgcDst, (int) pgcSrc->clientClipType,
pgcSrc->clientClip, 0);
break;
case CT_REGION:
prgnNew = REGION_CREATE(pgcSrc->pScreen, NULL, 1);
REGION_COPY(pgcDst->pScreen, prgnNew,
(RegionPtr) (pgcSrc->clientClip));
(*pgcDst->funcs->ChangeClip) (pgcDst, CT_REGION, (pointer) prgnNew, 0);
break;
}
}
/* ARGSUSED */
void
miCopyGC(pGCSrc, changes, pGCDst)
GCPtr pGCSrc;
unsigned long changes;
GCPtr pGCDst;
{
return;
}
void
miComputeCompositeClip(pGC, pDrawable)
GCPtr pGC;
DrawablePtr pDrawable;
{
ScreenPtr pScreen;
/* This prevents warnings about pScreen not being used. */
pGC->pScreen = pScreen = pGC->pScreen;
if (pDrawable->type == DRAWABLE_WINDOW)
{
WindowPtr pWin = (WindowPtr) pDrawable;
RegionPtr pregWin;
Bool freeTmpClip, freeCompClip;
if (pGC->subWindowMode == IncludeInferiors)
{
pregWin = NotClippedByChildren(pWin);
freeTmpClip = TRUE;
}
else
{
pregWin = &pWin->clipList;
freeTmpClip = FALSE;
}
freeCompClip = pGC->freeCompClip;
/*
* if there is no client clip, we can get by with just keeping the
* pointer we got, and remembering whether or not should destroy (or
* maybe re-use) it later. this way, we avoid unnecessary copying of
* regions. (this wins especially if many clients clip by children
* and have no client clip.)
*/
if (pGC->clientClipType == CT_NONE)
{
if (freeCompClip)
REGION_DESTROY(pScreen, pGC->pCompositeClip);
pGC->pCompositeClip = pregWin;
pGC->freeCompClip = freeTmpClip;
}
else
{
/*
* we need one 'real' region to put into the composite clip. if
* pregWin the current composite clip are real, we can get rid of
* one. if pregWin is real and the current composite clip isn't,
* use pregWin for the composite clip. if the current composite
* clip is real and pregWin isn't, use the current composite
* clip. if neither is real, create a new region.
*/
REGION_TRANSLATE(pScreen, pGC->clientClip,
pDrawable->x + pGC->clipOrg.x,
pDrawable->y + pGC->clipOrg.y);
if (freeCompClip)
{
REGION_INTERSECT(pGC->pScreen, pGC->pCompositeClip,
pregWin, pGC->clientClip);
if (freeTmpClip)
REGION_DESTROY(pScreen, pregWin);
}
else if (freeTmpClip)
{
REGION_INTERSECT(pScreen, pregWin, pregWin, pGC->clientClip);
pGC->pCompositeClip = pregWin;
}
else
{
pGC->pCompositeClip = REGION_CREATE(pScreen, NullBox, 0);
REGION_INTERSECT(pScreen, pGC->pCompositeClip,
pregWin, pGC->clientClip);
}
pGC->freeCompClip = TRUE;
REGION_TRANSLATE(pScreen, pGC->clientClip,
-(pDrawable->x + pGC->clipOrg.x),
-(pDrawable->y + pGC->clipOrg.y));
}
} /* end of composite clip for a window */
else
{
BoxRec pixbounds;
/* XXX should we translate by drawable.x/y here ? */
/* If you want pixmaps in offscreen memory, yes */
pixbounds.x1 = pDrawable->x;
pixbounds.y1 = pDrawable->y;
pixbounds.x2 = pDrawable->x + pDrawable->width;
pixbounds.y2 = pDrawable->y + pDrawable->height;
if (pGC->freeCompClip)
{
REGION_RESET(pScreen, pGC->pCompositeClip, &pixbounds);
}
else
{
pGC->freeCompClip = TRUE;
pGC->pCompositeClip = REGION_CREATE(pScreen, &pixbounds, 1);
}
if (pGC->clientClipType == CT_REGION)
{
if(pDrawable->x || pDrawable->y) {
REGION_TRANSLATE(pScreen, pGC->clientClip,
pDrawable->x + pGC->clipOrg.x,
pDrawable->y + pGC->clipOrg.y);
REGION_INTERSECT(pScreen, pGC->pCompositeClip,
pGC->pCompositeClip, pGC->clientClip);
REGION_TRANSLATE(pScreen, pGC->clientClip,
-(pDrawable->x + pGC->clipOrg.x),
-(pDrawable->y + pGC->clipOrg.y));
} else {
REGION_TRANSLATE(pScreen, pGC->pCompositeClip,
-pGC->clipOrg.x, -pGC->clipOrg.y);
REGION_INTERSECT(pScreen, pGC->pCompositeClip,
pGC->pCompositeClip, pGC->clientClip);
REGION_TRANSLATE(pScreen, pGC->pCompositeClip,
pGC->clipOrg.x, pGC->clipOrg.y);
}
}
} /* end of composite clip for pixmap */
} /* end miComputeCompositeClip */
|
