add C proof of concept

1 files changed, 40 insertions, 0 deletions

diff --git a/experimental/status.c b/experimental/status.c
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--- /dev/null
+++ b/experimental/status.c
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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;
+}