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
|
/* $Xorg: Pixmap.c,v 1.3 2000/08/17 19:53:28 cpqbld Exp $ */
/*
Copyright 1993 by Davor Matic
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. Davor Matic makes no representations about
the suitability of this software for any purpose. It is provided "as
is" without express or implied warranty.
*/
/* $XFree86: xc/programs/Xserver/hw/xnest/Pixmap.c,v 3.7 2003/07/16 01:38:51 dawes Exp $ */
#ifdef HAVE_XNEST_CONFIG_H
#include <xnest-config.h>
#endif
#include <X11/X.h>
#include <X11/Xproto.h>
#include "regionstr.h"
#include "pixmapstr.h"
#include "scrnintstr.h"
#include "regionstr.h"
#include "gc.h"
#include "servermd.h"
#include "mi.h"
#include "Xnest.h"
#include "Display.h"
#include "Screen.h"
#include "XNPixmap.h"
#ifdef PIXPRIV
int xnestPixmapPrivateIndex;
#endif
PixmapPtr
xnestCreatePixmap(ScreenPtr pScreen, int width, int height, int depth)
{
PixmapPtr pPixmap;
pPixmap = AllocatePixmap(pScreen, sizeof(xnestPrivPixmap));
if (!pPixmap)
return NullPixmap;
pPixmap->drawable.type = DRAWABLE_PIXMAP;
pPixmap->drawable.class = 0;
pPixmap->drawable.depth = depth;
pPixmap->drawable.bitsPerPixel = depth;
pPixmap->drawable.id = 0;
pPixmap->drawable.x = 0;
pPixmap->drawable.y = 0;
pPixmap->drawable.width = width;
pPixmap->drawable.height = height;
pPixmap->drawable.pScreen = pScreen;
pPixmap->drawable.serialNumber = NEXT_SERIAL_NUMBER;
pPixmap->refcnt = 1;
pPixmap->devKind = PixmapBytePad(width, depth);
#ifdef PIXPRIV
pPixmap->devPrivates[xnestPixmapPrivateIndex].ptr =
(pointer)((char *)pPixmap + pScreen->totalPixmapSize);
#else
pPixmap->devPrivate.ptr = (pointer)(pPixmap + 1);
#endif
if (width && height)
xnestPixmapPriv(pPixmap)->pixmap =
XCreatePixmap(xnestDisplay,
xnestDefaultWindows[pScreen->myNum],
width, height, depth);
else
xnestPixmapPriv(pPixmap)->pixmap = 0;
return pPixmap;
}
Bool
xnestDestroyPixmap(PixmapPtr pPixmap)
{
if(--pPixmap->refcnt)
return TRUE;
XFreePixmap(xnestDisplay, xnestPixmap(pPixmap));
xfree(pPixmap);
return TRUE;
}
RegionPtr
xnestPixmapToRegion(PixmapPtr pPixmap)
{
XImage *ximage;
register RegionPtr pReg, pTmpReg;
register int x, y;
unsigned long previousPixel, currentPixel;
BoxRec Box;
Bool overlap;
ximage = XGetImage(xnestDisplay, xnestPixmap(pPixmap), 0, 0,
pPixmap->drawable.width, pPixmap->drawable.height,
1, XYPixmap);
pReg = REGION_CREATE(pPixmap->drawable.pScreen, NULL, 1);
pTmpReg = REGION_CREATE(pPixmap->drawable.pScreen, NULL, 1);
if(!pReg || !pTmpReg) {
XDestroyImage(ximage);
return NullRegion;
}
for (y = 0; y < pPixmap->drawable.height; y++) {
Box.y1 = y;
Box.y2 = y + 1;
previousPixel = 0L;
for (x = 0; x < pPixmap->drawable.width; x++) {
currentPixel = XGetPixel(ximage, x, y);
if (previousPixel != currentPixel) {
if (previousPixel == 0L) {
/* left edge */
Box.x1 = x;
}
else if (currentPixel == 0L) {
/* right edge */
Box.x2 = x;
REGION_RESET(pPixmap->drawable.pScreen, pTmpReg, &Box);
REGION_APPEND(pPixmap->drawable.pScreen, pReg, pTmpReg);
}
previousPixel = currentPixel;
}
}
if (previousPixel != 0L) {
/* right edge because of the end of pixmap */
Box.x2 = pPixmap->drawable.width;
REGION_RESET(pPixmap->drawable.pScreen, pTmpReg, &Box);
REGION_APPEND(pPixmap->drawable.pScreen, pReg, pTmpReg);
}
}
REGION_DESTROY(pPixmap->drawable.pScreen, pTmpReg);
XDestroyImage(ximage);
REGION_VALIDATE(pPixmap->drawable.pScreen, pReg, &overlap);
return(pReg);
}
|
