components/keyboard_indicators.c

   1 /* See LICENSE file for copyright and license details. */
   2 #include <stdio.h>
   3 #include <X11/Xlib.h>
   4
   5 #include "../util.h"
   6
   7 const char *
   8 keyboard_indicators(void)
   9 {
  10         Display *dpy = XOpenDisplay(NULL);
  11         XKeyboardState state;
  12
  13         if (dpy == NULL) {
  14                 fprintf(stderr, "Cannot open display");
  15                 return NULL;
  16         }
  17         XGetKeyboardControl(dpy, &state);
  18         XCloseDisplay(dpy);
  19
  20         switch (state.led_mask) {
  21                 case 1:
  22                         return "c";
  23                 case 2:
  24                         return "n";
  25                 case 3:
  26                         return "cn";
  27                 default:
  28                         return "";
  29         }
  30 }