1 76193d7c 2003-09-30 devnull #include <u.h>
 2 76193d7c 2003-09-30 devnull #include <libc.h>
 3 76193d7c 2003-09-30 devnull #include <draw.h>
 4 76193d7c 2003-09-30 devnull 
 5 76193d7c 2003-09-30 devnull /*
 6 76193d7c 2003-09-30 devnull  * This code (and the devdraw interface) will have to change
 7 76193d7c 2003-09-30 devnull  * if we ever get bitmaps with ldepth > 3, because the
 8 76193d7c 2003-09-30 devnull  * colormap will have to be written in chunks
 9 76193d7c 2003-09-30 devnull  */
10 76193d7c 2003-09-30 devnull 
11 76193d7c 2003-09-30 devnull void
12 76193d7c 2003-09-30 devnull writecolmap(Display *d, RGB *m)
13 76193d7c 2003-09-30 devnull {
14 76193d7c 2003-09-30 devnull 	int i, n, fd;
15 76193d7c 2003-09-30 devnull 	char buf[64], *t;
16 76193d7c 2003-09-30 devnull 	ulong r, g, b;
17 76193d7c 2003-09-30 devnull 
18 76193d7c 2003-09-30 devnull 	sprint(buf, "/dev/draw/%d/colormap", d->dirno);
19 76193d7c 2003-09-30 devnull 	fd = open(buf, OWRITE);
20 76193d7c 2003-09-30 devnull 	if(fd < 0)
21 76193d7c 2003-09-30 devnull 		drawerror(d, "wrcolmap: open colormap failed");
22 76193d7c 2003-09-30 devnull 	t = malloc(8192);
23 76193d7c 2003-09-30 devnull 	n = 0;
24 76193d7c 2003-09-30 devnull 	for(i = 0; i < 256; i++) {
25 76193d7c 2003-09-30 devnull 		r = m[i].red>>24;
26 76193d7c 2003-09-30 devnull 		g = m[i].green>>24;
27 76193d7c 2003-09-30 devnull 		b = m[i].blue>>24;
28 76193d7c 2003-09-30 devnull 		n += sprint(t+n, "%d %lud %lud %lud\n", 255-i, r, g, b);
29 76193d7c 2003-09-30 devnull 	}
30 76193d7c 2003-09-30 devnull 	i = write(fd, t, n);
31 76193d7c 2003-09-30 devnull 	free(t);
32 76193d7c 2003-09-30 devnull 	close(fd);
33 76193d7c 2003-09-30 devnull 	if(i != n)
34 76193d7c 2003-09-30 devnull 		drawerror(d, "wrcolmap: bad write");
35 76193d7c 2003-09-30 devnull }