6 void warn(char *fmt, ...)
10 vfprintf(stderr, fmt, ap);
14 __attribute__((noreturn))
15 void err(char *fmt, ...)
19 vfprintf(stderr, fmt, ap);
24 bool get_color(char *col, xcb_window_t win, uint32_t *pxl)
26 xcb_colormap_t map = screen->default_colormap;
27 xcb_get_window_attributes_reply_t *reply = xcb_get_window_attributes_reply(dpy, xcb_get_window_attributes(dpy, win), NULL);
29 map = reply->colormap;
33 unsigned int red, green, blue;
34 if (sscanf(col + 1, "%02x%02x%02x", &red, &green, &blue) == 3) {
35 /* 2**16 - 1 == 0xffff and 0x101 * 0xij == 0xijij */
39 xcb_alloc_color_reply_t *reply = xcb_alloc_color_reply(dpy, xcb_alloc_color(dpy, map, red, green, blue), NULL);
47 xcb_alloc_named_color_reply_t *reply = xcb_alloc_named_color_reply(dpy, xcb_alloc_named_color(dpy, map, strlen(col), col), NULL);
58 double distance(xcb_point_t a, xcb_point_t b)
60 return hypot(a.x - b.x, a.y - b.y);