59 lines
1.1 KiB
C
59 lines
1.1 KiB
C
/*
|
|
* This file is part of the UCB release of Plan 9. It is subject to the license
|
|
* terms in the LICENSE file found in the top-level directory of this
|
|
* distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
|
|
* part of the UCB release of Plan 9, including this file, may be copied,
|
|
* modified, propagated, or distributed except according to the terms contained
|
|
* in the LICENSE file.
|
|
*/
|
|
|
|
#include <u.h>
|
|
#include <lib9.h>
|
|
#include <draw.h>
|
|
#include <bio.h>
|
|
|
|
static uint32_t
|
|
getval(char **p)
|
|
{
|
|
uint32_t v;
|
|
char *q;
|
|
|
|
v = strtoul(*p, &q, 0);
|
|
v |= v<<8;
|
|
v |= v<<16;
|
|
*p = q;
|
|
return v;
|
|
}
|
|
|
|
void
|
|
readcolmap(Display *d, RGB *colmap)
|
|
{
|
|
int i;
|
|
char *p, *q;
|
|
Biobuf *b;
|
|
char buf[128];
|
|
|
|
USED(screen);
|
|
|
|
sprint(buf, "/dev/draw/%d/colormap", d->dirno);
|
|
b = Bopen(buf, OREAD);
|
|
if(b == 0)
|
|
drawerror(d, "rdcolmap: can't open colormap device");
|
|
|
|
for(;;) {
|
|
p = Brdline(b, '\n');
|
|
if(p == 0)
|
|
break;
|
|
i = strtoul(p, &q, 0);
|
|
if(i < 0 || i > 255) {
|
|
fprint(2, "rdcolmap: bad index\n");
|
|
exits("bad");
|
|
}
|
|
p = q;
|
|
colmap[255-i].red = getval(&p);
|
|
colmap[255-i].green = getval(&p);
|
|
colmap[255-i].blue = getval(&p);
|
|
}
|
|
Bterm(b);
|
|
}
|