start on jtk module

Rsconsfile

@@ -2,5 +2,6 @@ Rscons::Environment.new do |env|
   env["sources"] = Dir[
     "src/**/*.d", 
     "src/**/*.c"]
+  env["D_IMPORT_PATH"] += Dir["src/**/"]
   env.Program("#{env.build_root}/jes", "${sources}")
 end

src/gui/jtk.d

@@ -0,0 +1,53 @@
+struct Event
+{
+    enum Type : ubyte
+    {
+        WINDOW_CLOSE,
+        WINDOW_EXPOSE,
+        KEY_PRESS,
+        KEY_RELEASE,
+        BUTTON_PRESS,
+        BUTTON_RELEASE,
+        TIMER,
+        WINDOW_RESIZE,
+    };
+
+    struct KeyEvent
+    {
+        bool repeat;
+        uint key;
+        uint x_keycode;
+    };
+
+    struct ButtonEvent
+    {
+        uint mods;
+        ubyte button;
+    };
+
+    struct TimerEvent
+    {
+        uint timer_id;
+        void * user1;
+        void * user2;
+    };
+
+    struct WindowResizeEvent
+    {
+        uint width;
+        uint height;
+    };
+
+    Type type;
+    union
+    {
+        KeyEvent key;
+        ButtonEvent button;
+        TimerEvent timer;
+        WindowResizeEvent resize;
+    };
+}
+
+class Window
+{
+}