Add cairo interface.

src/windows/ui_interfaces/x11/XcbWindowInterface.h

@@ -0,0 +1,30 @@
+#pragma once
+
+#include <memory>
+
+namespace mt
+{
+class Window;
+class Screen;
+}
+struct xcb_connection_t;
+struct xcb_screen_t;
+
+class XcbWindowInterface
+{
+public:
+
+    static std::unique_ptr<XcbWindowInterface> Create();
+
+    void Add(mt::Window* window, xcb_connection_t* connection, mt::Screen* screen, uint32_t eventMask) const;
+
+    void Show(mt::Window* window, xcb_connection_t* connection) const;
+
+    void Paint(mt::Window* window, xcb_connection_t* connection, xcb_screen_t* screen, unsigned gc) const;
+
+    void Clear(mt::Window* window, xcb_connection_t* connection) const;
+
+    void Map(mt::Window* window, xcb_connection_t* connection) const;
+};
+
+using XcbWindowInterfacePtr = std::unique_ptr<XcbWindowInterface>;