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/*
* File: status.c
* Location: https://bgstack15.ddns.net/cgit/keyboard-leds-trayicons/
* Author: bgstack15
* Startdate: 2022-09-28-4 13:30
* SPDX-License-Identifier: GPL-3.0
* Title: Proof of Concept C utility for polling capslock and numlock
* Purpose: Demonstrate these can be done in C, with the eventual goal of rewriting keyboard-leds-trayicons entirely in C to avoid the "sleep 0.75" in ps output
* History:
* Usage:
* References:
* https://github.com/Cairo-Dock/cairo-dock-plug-ins/blob/master/keyboard-indicator/src/applet-xklavier.c#L124
* https://github.com/oco2000/xfce4-kbdleds-plugin/blob/fe753d9d0f8a720a35a32f5f556b8fbead798d20/panel-plugin/xkbleds.c
* Improvements:
* Write main keyboard-led-trayicons logic, which includes parsing config file (libconfig?)
* Write pipe connectivity to mktrayicon or integrate it entirely
* Dependencies: libx11-dev
*/
#include<stdio.h>
#include<string.h>
#include<X11/XKBlib.h>
Display* dpy;
int get_indicator(Display* dpy, char* indicator) {
// where indicator is one of ["Num Lock", "Caps Lock"]
Atom lockIndicator = XInternAtom(dpy, indicator, False);
int st;
XkbGetNamedIndicator(dpy, lockIndicator, NULL, &st, NULL, NULL);
return st;
}
int main() {
dpy = XOpenDisplay( NULL );
int status_capslock = get_indicator(dpy, "Caps Lock");
int status_numlock = get_indicator(dpy, "Num Lock");
printf("Capslock: %d\tNumlock: %d\n",status_capslock,status_numlock);
printf("done\n");
return 0;
}
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