DDrawCompat/DDrawCompat/Gdi/Window.h

#pragma once

#define WIN32_LEAN_AND_MEAN

#include <map>

#include <Windows.h>

#include "Gdi/Region.h"

namespace Gdi
{
	class Window
	{
	public:
		Window(HWND hwnd);
		Window(const Window&) = delete;
		Window& operator=(const Window&) = delete;

		Region getVisibleRegion() const;
		RECT getWindowRect() const;

		static Window& add(HWND hwnd);
		static Window& get(HWND hwnd);
		static void remove(HWND hwnd);
		static void updateAll();

	private:
		void calcInvalidatedRegion(const RECT& oldWindowRect, const Region& oldVisibleRegion);
		void update();

		HWND m_hwnd;
		RECT m_windowRect;
		Region m_visibleRegion;
		Region m_invalidatedRegion;
		bool m_isUpdating;

		static std::map<HWND, Window> s_windows;
	};
}