Add XKB interface for x11

src/windows/ui_interfaces/x11/XcbKeyboard.h

@@ -1,14 +1,29 @@
 #pragma once
 #include "Keyboard.h"
 
+#include <xcb/xcb.h>
+#include <xkbcommon/xkbcommon.h>
+
+struct xcb_xkb_state_notify_event_t;
+
 class XcbKeyboard : public Keyboard
 {
 public:
-    XcbKeyboard();
+    XcbKeyboard(xcb_connection_t* connection);
 
-    static std::unique_ptr<XcbKeyboard> Create();
+    static std::unique_ptr<XcbKeyboard> Create(xcb_connection_t* connection);
 
-    std::string GetKeyString(KeyCode keyCode) override;
+    std::string getKeyString(KeyCode keyCode) override;
+
+    void updateState(xcb_xkb_state_notify_event_t *state);
+
+private:
+    void getKeyMap();
+
+    xcb_connection_t* mConnection{nullptr};
+    xkb_state* mXkbState{nullptr};
+    xkb_context* mXkbContext{nullptr};
+    xkb_keymap* mXkbKeymap{nullptr};
 };
 
 using XcbKeyboardUPtr = std::unique_ptr<XcbKeyboard>;