From 376d5bfe0f3b9658cbf2d4ca9b00c0600341ee85 Mon Sep 17 00:00:00 2001
From: Yuqian Yang <crupest@crupest.life>
Date: Tue, 25 Nov 2025 17:15:16 +0800
Subject: Clean code. Clean events of native window.

---
 include/cru/base/Base.h               |  7 ++++-
 include/cru/base/Event.h              |  7 +++++
 include/cru/platform/gui/Window.h     | 21 +++++++++++++++
 include/cru/platform/gui/win/Window.h | 50 ++---------------------------------
 4 files changed, 36 insertions(+), 49 deletions(-)

(limited to 'include')

diff --git a/include/cru/base/Base.h b/include/cru/base/Base.h
index fda45f66..3cd04f8c 100644
--- a/include/cru/base/Base.h
+++ b/include/cru/base/Base.h
@@ -137,12 +137,17 @@ class CRU_BASE_API Exception : public std::exception {
   std::shared_ptr<std::exception> inner_;
 };
 
+class CRU_BASE_API NotImplementedException : public Exception {
+ public:
+  using Exception::Exception;  // inherit constructors
+};
+
 class CRU_BASE_API PlatformException : public Exception {
  public:
   using Exception::Exception;  // inherit constructors
 };
 
-class ErrnoException : public Exception {
+class CRU_BASE_API ErrnoException : public Exception {
  public:
   ErrnoException();
   explicit ErrnoException(int error_code);
diff --git a/include/cru/base/Event.h b/include/cru/base/Event.h
index bdaf3ea6..71c0ac6b 100644
--- a/include/cru/base/Event.h
+++ b/include/cru/base/Event.h
@@ -141,6 +141,13 @@ class Event : public EventBase, public IEvent<TEventArgs> {
  public:                                 \
   ::cru::IEvent<arg_type>* name##Event() { return &name##Event_; }
 
+#define CRU_DEFINE_EVENT_OVERRIDE(name, arg_type) \
+ private:                                         \
+  ::cru::Event<arg_type> name##Event_;            \
+                                                  \
+ public:                                          \
+  ::cru::IEvent<arg_type>* name##Event() override { return &name##Event_; }
+
 namespace details {
 struct EventHandlerRevokerCaller {
   void operator()(const EventHandlerRevoker& revoker) { revoker(); }
diff --git a/include/cru/platform/gui/Window.h b/include/cru/platform/gui/Window.h
index b8973c5a..e04db448 100644
--- a/include/cru/platform/gui/Window.h
+++ b/include/cru/platform/gui/Window.h
@@ -23,6 +23,10 @@ struct WindowStyleFlags {
 
 enum class WindowVisibilityType { Show, Hide, Minimize };
 
+struct NativePaintEventArgs {
+  Rect repaint_area;
+};
+
 enum class FocusChangeType { Gain, Lose };
 
 enum class MouseEnterLeaveType { Enter, Leave };
@@ -100,6 +104,7 @@ struct CRU_PLATFORM_GUI_API INativeWindow : virtual IPlatformResource {
   virtual IEvent<std::nullptr_t>* CreateEvent() = 0;
   virtual IEvent<std::nullptr_t>* DestroyEvent() = 0;
   virtual IEvent<std::nullptr_t>* PaintEvent() = 0;
+  virtual IEvent<const NativePaintEventArgs&>* Paint1Event();
 
   virtual IEvent<WindowVisibilityType>* VisibilityChangeEvent() = 0;
   virtual IEvent<const Size&>* ResizeEvent() = 0;
@@ -116,3 +121,19 @@ struct CRU_PLATFORM_GUI_API INativeWindow : virtual IPlatformResource {
   virtual IInputMethodContext* GetInputMethodContext() = 0;
 };
 }  // namespace cru::platform::gui
+
+#define CRU_DEFINE_CRU_PLATFORM_GUI_I_NATIVE_WINDOW_OVERRIDE_EVENTS()     \
+  CRU_DEFINE_EVENT_OVERRIDE(Create, std::nullptr_t)                       \
+  CRU_DEFINE_EVENT_OVERRIDE(Destroy, std::nullptr_t)                      \
+  CRU_DEFINE_EVENT_OVERRIDE(Paint, std::nullptr_t)                        \
+  CRU_DEFINE_EVENT_OVERRIDE(Paint1, const NativePaintEventArgs&)          \
+  CRU_DEFINE_EVENT_OVERRIDE(VisibilityChange, WindowVisibilityType)       \
+  CRU_DEFINE_EVENT_OVERRIDE(Resize, const Size&)                          \
+  CRU_DEFINE_EVENT_OVERRIDE(Focus, FocusChangeType)                       \
+  CRU_DEFINE_EVENT_OVERRIDE(MouseEnterLeave, MouseEnterLeaveType)         \
+  CRU_DEFINE_EVENT_OVERRIDE(MouseMove, const Point&)                      \
+  CRU_DEFINE_EVENT_OVERRIDE(MouseDown, const NativeMouseButtonEventArgs&) \
+  CRU_DEFINE_EVENT_OVERRIDE(MouseUp, const NativeMouseButtonEventArgs&)   \
+  CRU_DEFINE_EVENT_OVERRIDE(MouseWheel, const NativeMouseWheelEventArgs&) \
+  CRU_DEFINE_EVENT_OVERRIDE(KeyDown, const NativeKeyEventArgs&)           \
+  CRU_DEFINE_EVENT_OVERRIDE(KeyUp, const NativeKeyEventArgs&)
diff --git a/include/cru/platform/gui/win/Window.h b/include/cru/platform/gui/win/Window.h
index c7d48ea9..e690ad4e 100644
--- a/include/cru/platform/gui/win/Window.h
+++ b/include/cru/platform/gui/win/Window.h
@@ -61,38 +61,8 @@ class CRU_WIN_GUI_API WinNativeWindow : public WinNativeResource,
 
   void SetToForeground() override;
 
-  IEvent<std::nullptr_t>* CreateEvent() override { return &create_event_; }
-  IEvent<std::nullptr_t>* DestroyEvent() override { return &destroy_event_; }
-  IEvent<std::nullptr_t>* PaintEvent() override { return &paint_event_; }
-  IEvent<WindowVisibilityType>* VisibilityChangeEvent() override {
-    return &visibility_change_event_;
-  }
-  IEvent<const Size&>* ResizeEvent() override { return &resize_event_; }
-  IEvent<FocusChangeType>* FocusEvent() override { return &focus_event_; }
-  IEvent<MouseEnterLeaveType>* MouseEnterLeaveEvent() override {
-    return &mouse_enter_leave_event_;
-  }
-  IEvent<const Point&>* MouseMoveEvent() override { return &mouse_move_event_; }
-  IEvent<const NativeMouseButtonEventArgs&>* MouseDownEvent() override {
-    return &mouse_down_event_;
-  }
-  IEvent<const NativeMouseButtonEventArgs&>* MouseUpEvent() override {
-    return &mouse_up_event_;
-  }
-  IEvent<const NativeMouseWheelEventArgs&>* MouseWheelEvent() override {
-    return &mouse_wheel_event_;
-  }
-
-  IEvent<const NativeKeyEventArgs&>* KeyDownEvent() override {
-    return &key_down_event_;
-  }
-  IEvent<const NativeKeyEventArgs&>* KeyUpEvent() override {
-    return &key_up_event_;
-  }
-
-  IEvent<WindowNativeMessageEventArgs&>* NativeMessageEvent() {
-    return &native_message_event_;
-  }
+  CRU_DEFINE_CRU_PLATFORM_GUI_I_NATIVE_WINDOW_OVERRIDE_EVENTS()
+  CRU_DEFINE_EVENT(NativeMessage, WindowNativeMessageEventArgs&)
 
   IInputMethodContext* GetInputMethodContext() override;
 
@@ -193,21 +163,5 @@ class CRU_WIN_GUI_API WinNativeWindow : public WinNativeResource,
   std::shared_ptr<WinCursor> cursor_;
 
   std::unique_ptr<WinInputMethodContext> input_method_context_;
-
-  Event<std::nullptr_t> create_event_;
-  Event<std::nullptr_t> destroy_event_;
-  Event<std::nullptr_t> paint_event_;
-  Event<const Size&> resize_event_;
-  Event<WindowVisibilityType> visibility_change_event_;
-  Event<FocusChangeType> focus_event_;
-  Event<MouseEnterLeaveType> mouse_enter_leave_event_;
-  Event<const Point&> mouse_move_event_;
-  Event<const NativeMouseButtonEventArgs&> mouse_down_event_;
-  Event<const NativeMouseButtonEventArgs&> mouse_up_event_;
-  Event<const NativeMouseWheelEventArgs&> mouse_wheel_event_;
-  Event<const NativeKeyEventArgs&> key_down_event_;
-  Event<const NativeKeyEventArgs&> key_up_event_;
-
-  Event<WindowNativeMessageEventArgs&> native_message_event_;
 };
 }  // namespace cru::platform::gui::win
-- 
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