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a09e091a JB |
1 | /* |
2 | ||
3 | Copyright 1993 by Davor Matic | |
4 | ||
5 | Permission to use, copy, modify, distribute, and sell this software | |
6 | and its documentation for any purpose is hereby granted without fee, | |
7 | provided that the above copyright notice appear in all copies and that | |
8 | both that copyright notice and this permission notice appear in | |
9 | supporting documentation. Davor Matic makes no representations about | |
10 | the suitability of this software for any purpose. It is provided "as | |
11 | is" without express or implied warranty. | |
12 | ||
13 | */ | |
14 | ||
15 | #ifdef HAVE_XNEST_CONFIG_H | |
16 | #include <xnest-config.h> | |
17 | #endif | |
18 | ||
19 | #include <X11/X.h> | |
20 | #include <X11/Xproto.h> | |
21 | #include "regionstr.h" | |
22 | #include "pixmapstr.h" | |
23 | #include "scrnintstr.h" | |
24 | #include "gc.h" | |
25 | #include "servermd.h" | |
26 | #include "privates.h" | |
27 | #include "mi.h" | |
28 | ||
29 | #include "Xnest.h" | |
30 | ||
31 | #include "Display.h" | |
32 | #include "Screen.h" | |
33 | #include "XNPixmap.h" | |
34 | ||
35 | DevPrivateKeyRec xnestPixmapPrivateKeyRec; | |
36 | ||
37 | PixmapPtr | |
38 | xnestCreatePixmap(ScreenPtr pScreen, int width, int height, int depth, | |
39 | unsigned usage_hint) | |
40 | { | |
41 | PixmapPtr pPixmap; | |
42 | ||
43 | pPixmap = AllocatePixmap(pScreen, 0); | |
44 | if (!pPixmap) | |
45 | return NullPixmap; | |
46 | pPixmap->drawable.type = DRAWABLE_PIXMAP; | |
47 | pPixmap->drawable.class = 0; | |
48 | pPixmap->drawable.depth = depth; | |
49 | pPixmap->drawable.bitsPerPixel = depth; | |
50 | pPixmap->drawable.id = 0; | |
51 | pPixmap->drawable.x = 0; | |
52 | pPixmap->drawable.y = 0; | |
53 | pPixmap->drawable.width = width; | |
54 | pPixmap->drawable.height = height; | |
55 | pPixmap->drawable.pScreen = pScreen; | |
56 | pPixmap->drawable.serialNumber = NEXT_SERIAL_NUMBER; | |
57 | pPixmap->refcnt = 1; | |
58 | pPixmap->devKind = PixmapBytePad(width, depth); | |
59 | pPixmap->usage_hint = usage_hint; | |
60 | if (width && height) | |
61 | xnestPixmapPriv(pPixmap)->pixmap = | |
62 | XCreatePixmap(xnestDisplay, | |
63 | xnestDefaultWindows[pScreen->myNum], | |
64 | width, height, depth); | |
65 | else | |
66 | xnestPixmapPriv(pPixmap)->pixmap = 0; | |
67 | ||
68 | return pPixmap; | |
69 | } | |
70 | ||
71 | Bool | |
72 | xnestDestroyPixmap(PixmapPtr pPixmap) | |
73 | { | |
74 | if (--pPixmap->refcnt) | |
75 | return TRUE; | |
76 | XFreePixmap(xnestDisplay, xnestPixmap(pPixmap)); | |
77 | FreePixmap(pPixmap); | |
78 | return TRUE; | |
79 | } | |
80 | ||
81 | Bool | |
82 | xnestModifyPixmapHeader(PixmapPtr pPixmap, int width, int height, int depth, | |
83 | int bitsPerPixel, int devKind, pointer pPixData) | |
84 | { | |
85 | if(!xnestPixmapPriv(pPixmap)->pixmap && width > 0 && height > 0) { | |
86 | xnestPixmapPriv(pPixmap)->pixmap = | |
87 | XCreatePixmap(xnestDisplay, | |
88 | xnestDefaultWindows[pPixmap->drawable.pScreen->myNum], | |
89 | width, height, depth); | |
90 | } | |
91 | ||
92 | return miModifyPixmapHeader(pPixmap, width, height, depth, | |
93 | bitsPerPixel, devKind, pPixData); | |
94 | } | |
95 | ||
96 | RegionPtr | |
97 | xnestPixmapToRegion(PixmapPtr pPixmap) | |
98 | { | |
99 | XImage *ximage; | |
100 | register RegionPtr pReg, pTmpReg; | |
101 | register int x, y; | |
102 | unsigned long previousPixel, currentPixel; | |
103 | BoxRec Box = { 0, 0, 0, 0 }; | |
104 | Bool overlap; | |
105 | ||
106 | ximage = XGetImage(xnestDisplay, xnestPixmap(pPixmap), 0, 0, | |
107 | pPixmap->drawable.width, pPixmap->drawable.height, | |
108 | 1, XYPixmap); | |
109 | ||
110 | pReg = RegionCreate(NULL, 1); | |
111 | pTmpReg = RegionCreate(NULL, 1); | |
112 | if (!pReg || !pTmpReg) { | |
113 | XDestroyImage(ximage); | |
114 | return NullRegion; | |
115 | } | |
116 | ||
117 | for (y = 0; y < pPixmap->drawable.height; y++) { | |
118 | Box.y1 = y; | |
119 | Box.y2 = y + 1; | |
120 | previousPixel = 0L; | |
121 | for (x = 0; x < pPixmap->drawable.width; x++) { | |
122 | currentPixel = XGetPixel(ximage, x, y); | |
123 | if (previousPixel != currentPixel) { | |
124 | if (previousPixel == 0L) { | |
125 | /* left edge */ | |
126 | Box.x1 = x; | |
127 | } | |
128 | else if (currentPixel == 0L) { | |
129 | /* right edge */ | |
130 | Box.x2 = x; | |
131 | RegionReset(pTmpReg, &Box); | |
132 | RegionAppend(pReg, pTmpReg); | |
133 | } | |
134 | previousPixel = currentPixel; | |
135 | } | |
136 | } | |
137 | if (previousPixel != 0L) { | |
138 | /* right edge because of the end of pixmap */ | |
139 | Box.x2 = pPixmap->drawable.width; | |
140 | RegionReset(pTmpReg, &Box); | |
141 | RegionAppend(pReg, pTmpReg); | |
142 | } | |
143 | } | |
144 | ||
145 | RegionDestroy(pTmpReg); | |
146 | XDestroyImage(ximage); | |
147 | ||
148 | RegionValidate(pReg, &overlap); | |
149 | ||
150 | return pReg; | |
151 | } |