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
|
void
setnetwmicon(void)
{
/* use a farbfeld image to set _NET_WM_ICON */
FILE* file = fopen(ICON, "r");
if (file) {
unsigned char buf[16] = {0};
int hasdata = fread(buf,1,16,file);
if (memcmp(buf,"farbfeld",8)) {
fprintf(stderr,"netwmicon: file %s is not a farbfeld image\n", ICON);
fclose(file);
return;
}
/* declare icon-variable which will store the image in bgra-format */
const int width=(buf[8]<<24)|(buf[9]<<16)|(buf[10]<<8)|buf[11];
const int height=(buf[12]<<24)|(buf[13]<<16)|(buf[14]<<8)|buf[15];
const int icon_n = width * height + 2;
long icon_bgra[icon_n];
/* set width and height of the icon */
int i = 0;
icon_bgra[i++] = width;
icon_bgra[i++] = height;
/* rgba -> bgra */
for (int y = 0; y < height && hasdata; y++) {
for (int x = 0; x < width && hasdata; x++) {
unsigned char *pixel_bgra = (unsigned char *) &icon_bgra[i++];
hasdata = fread(buf,1,8,file);
pixel_bgra[0] = buf[4];
pixel_bgra[1] = buf[2];
pixel_bgra[2] = buf[0];
pixel_bgra[3] = buf[6];
}
}
/* set _NET_WM_ICON */
xw.netwmicon = XInternAtom(xw.dpy, "_NET_WM_ICON", False);
XChangeProperty(xw.dpy, xw.win, xw.netwmicon, XA_CARDINAL, 32,
PropModeReplace, (uchar *) icon_bgra, icon_n);
fclose(file);
}
}
|
