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1 files changed, 97 insertions, 0 deletions

diff --git a/include/cru/ui/window.hpp b/include/cru/ui/window.hpp
new file mode 100644
index 00000000..043aae35
--- /dev/null
+++ b/include/cru/ui/window.hpp
@@ -0,0 +1,97 @@
+#pragma once
+#include "content_control.hpp"
+
+#include "event/ui_event.hpp"
+
+#include <memory>
+
+namespace cru::platform {
+struct NativeWindow;
+}
+
+namespace cru::ui {
+namespace render {
+class WindowRenderObject;
+}
+
+class Window final : public ContentControl {
+ public:
+  static constexpr auto control_type = L"Window";
+
+ public:
+  static Window* CreateOverlapped();
+
+ private:
+  struct tag_overlapped_constructor {};
+
+  explicit Window(tag_overlapped_constructor);
+
+ public:
+  Window(const Window& other) = delete;
+  Window(Window&& other) = delete;
+  Window& operator=(const Window& other) = delete;
+  Window& operator=(Window&& other) = delete;
+  ~Window() override;
+
+ public:
+  std::wstring_view GetControlType() const override final;
+
+  render::RenderObject* GetRenderObject() const override;
+
+  platform::NativeWindow* GetNativeWindow() const;
+
+  Control* GetMouseHoverControl() const { return mouse_hover_control_; }
+
+  //*************** region: focus ***************
+
+  // Request focus for specified control.
+  bool RequestFocusFor(Control* control);
+
+  // Get the control that has focus.
+  Control* GetFocusControl();
+
+ protected:
+  void OnChildChanged(Control* old_child, Control* new_child) override;
+
+ private:
+  Control* HitTest(const Point& point);
+
+  //*************** region: native messages ***************
+
+  void OnNativeDestroy();
+  void OnNativePaint();
+  void OnNativeResize(float new_width, float new_height);
+
+  void OnSetFocusInternal();
+  void OnKillFocusInternal();
+
+  void OnMouseMoveInternal(POINT point);
+  void OnMouseLeaveInternal();
+  void OnMouseDownInternal(MouseButton button, POINT point);
+  void OnMouseUpInternal(MouseButton button, POINT point);
+
+  void OnMouseWheelInternal(short delta, POINT point);
+  void OnKeyDownInternal(int virtual_code);
+  void OnKeyUpInternal(int virtual_code);
+  void OnCharInternal(wchar_t c);
+
+  void OnActivatedInternal();
+  void OnDeactivatedInternal();
+
+  //*************** region: event dispatcher helper ***************
+
+  void DispatchMouseHoverControlChangeEvent(Control* old_control,
+                                            Control* new_control,
+                                            const Point& point);
+
+ private:
+  platform::NativeWindow* native_window_;
+  std::vector<EventHandlerToken> revoke_tokens_;
+
+  std::shared_ptr<render::WindowRenderObject> render_object_;
+
+  Control* mouse_hover_control_ = nullptr;
+
+  Control* focus_control_ = this;  // "focus_control_" can't be nullptr
+};
+}  // namespace cru::ui