Basic keyboard state module

include/factory.hpp

@@ -38,6 +38,9 @@
 #ifdef HAVE_LIBUDEV
 #include "modules/backlight.hpp"
 #endif
+#ifdef HAVE_LIBEVDEV
+#include "modules/keyboard_state.hpp"
+#endif
 #ifdef HAVE_LIBPULSE
 #include "modules/pulseaudio.hpp"
 #endif

include/modules/keyboard_state.hpp

@@ -0,0 +1,31 @@
+#pragma once
+
+#include <fmt/format.h>
+#if FMT_VERSION < 60000
+#include <fmt/time.h>
+#else
+#include <fmt/chrono.h>
+#endif
+#include "ALabel.hpp"
+#include "util/sleeper_thread.hpp"
+
+extern "C" {
+#include <libevdev/libevdev.h>
+}
+
+namespace waybar::modules {
+
+class KeyboardState : public ALabel {
+ public:
+  KeyboardState(const std::string&, const Json::Value&);
+  ~KeyboardState();
+  auto update() -> void;
+
+ private:
+  std::string dev_path_;
+  int         fd_;
+  libevdev*   dev_;
+  util::SleeperThread thread_;
+};
+
+}  // namespace waybar::modules