Add shown/hidden and minimized/maximized/restored window events

libs/app/include/psemek/app/application_base.hpp

@@ -11,6 +11,8 @@ namespace psemek::app
 	{
 		void on_event(resize_event const &) override;
 		void on_event(focus_event const &) override;
+		void on_event(show_event const &) override;
+		void on_event(minimize_event const &) override;
 		void on_event(mouse_move_event const &) override;
 		void on_event(mouse_wheel_event const &) override;
 		void on_event(mouse_button_event const &) override;

libs/app/include/psemek/app/event_handler.hpp

@@ -9,6 +9,8 @@ namespace psemek::app
 	{
 		virtual void on_event(resize_event const &) {}
 		virtual void on_event(focus_event const &) {}
+		virtual void on_event(show_event const &) {}
+		virtual void on_event(minimize_event const &) {}
 		virtual void on_event(mouse_move_event const &) {}
 		virtual void on_event(mouse_wheel_event const &) {}
 		virtual void on_event(mouse_button_event const &) {}

libs/app/include/psemek/app/event_state.hpp

@@ -10,6 +10,8 @@ namespace psemek::app
 	{
 		math::vector<int, 2> size = {0, 0};
 		bool focus = true;
+		bool shown = false;
+		minimize_event minimized = minimize_event::restored;
 		math::point<int, 2> mouse = {0, 0};
 		int wheel = 0;
 		util::hash_set<mouse_button> mouse_button_down;
@@ -26,6 +28,16 @@ namespace psemek::app
 		state.focus = event.gained;
 	}
 
+	inline void apply(event_state & state, show_event const & event)
+	{
+		state.shown = event.shown;
+	}
+
+	inline void apply(event_state & state, minimize_event const & event)
+	{
+		state.minimized = event;
+	}
+
 	inline void apply(event_state & state, mouse_move_event const & event)
 	{
 		state.mouse = event.position;

libs/app/include/psemek/app/events.hpp

@@ -17,6 +17,18 @@ namespace psemek::app
 		bool gained;
 	};
 
+	struct show_event
+	{
+		bool shown;
+	};
+
+	enum class minimize_event
+	{
+		minimized,
+		maximized,
+		restored,
+	};
+
 	struct mouse_move_event
 	{
 		math::point<int, 2> position;

libs/app/include/psemek/app/scene_application.hpp

@@ -11,6 +11,8 @@ namespace psemek::app
 	{
 		void on_event(resize_event const &) override;
 		void on_event(focus_event const &) override;
+		void on_event(show_event const &) override;
+		void on_event(minimize_event const &) override;
 		void on_event(mouse_move_event const &) override;
 		void on_event(mouse_wheel_event const &) override;
 		void on_event(mouse_button_event const &) override;

libs/app/source/application_base.cpp

@@ -13,6 +13,16 @@ namespace psemek::app
 		apply(state_, event);
 	}
 
+	void application_base::on_event(show_event const & event)
+	{
+		apply(state_, event);
+	}
+
+	void application_base::on_event(minimize_event const & event)
+	{
+		apply(state_, event);
+	}
+
 	void application_base::on_event(mouse_move_event const & event)
 	{
 		apply(state_, event);

libs/app/source/scene_application.cpp

@@ -13,6 +13,16 @@ namespace psemek::app
 		on_event_impl(event);
 	}
 
+	void scene_application::on_event(show_event const & event)
+	{
+		on_event_impl(event);
+	}
+
+	void scene_application::on_event(minimize_event const & event)
+	{
+		on_event_impl(event);
+	}
+
 	void scene_application::on_event(mouse_move_event const & event)
 	{
 		on_event_impl(event);

libs/sdl2/source/events.cpp

@@ -168,6 +168,21 @@ namespace psemek::sdl2
 			case SDL_WINDOWEVENT_FOCUS_LOST:
 				handler.on_event(app::focus_event{false});
 				break;
+			case SDL_WINDOWEVENT_SHOWN:
+				handler.on_event(app::show_event{true});
+				break;
+			case SDL_WINDOWEVENT_HIDDEN:
+				handler.on_event(app::show_event{false});
+				break;
+			case SDL_WINDOWEVENT_MINIMIZED:
+				handler.on_event(app::minimize_event::minimized);
+				break;
+			case SDL_WINDOWEVENT_MAXIMIZED:
+				handler.on_event(app::minimize_event::maximized);
+				break;
+			case SDL_WINDOWEVENT_RESTORED:
+				handler.on_event(app::minimize_event::restored);
+				break;
 			}
 			break;
 		case SDL_MOUSEMOTION: