BansheeEngine/BansheeGLRenderAPI/Include/BsWin32RenderWindow.h

#pragma once

#include "BsWin32Prerequisites.h"
#include "BsRenderWindow.h"

namespace BansheeEngine 
{
	class Win32RenderWindow;

	/**
	 * @brief	Contains various properties that describe a render window.
	 */
	class BS_RSGL_EXPORT Win32RenderWindowProperties : public RenderWindowProperties
	{
	public:
		Win32RenderWindowProperties(const RENDER_WINDOW_DESC& desc);
		virtual ~Win32RenderWindowProperties() { }

	private:
		friend class Win32RenderWindowCore;
		friend class Win32RenderWindow;
	};

	/**
	 * @brief	Render window implementation for Windows.
	 *
	 * @note	Core thread only.
	 */
    class BS_RSGL_EXPORT Win32RenderWindowCore : public RenderWindowCore
    {
    public:
		Win32RenderWindowCore(const RENDER_WINDOW_DESC& desc, UINT32 windowId, Win32GLSupport &glsupport);
		~Win32RenderWindowCore();

		/**
		 * @copydoc RenderWindowCore::setFullscreen(UINT32, UINT32, float, UINT32)
		 */
		void setFullscreen(UINT32 width, UINT32 height, float refreshRate = 60.0f, UINT32 monitorIdx = 0) override;

		/**
		 * @copydoc RenderWindowCore::setFullscreen(const VideoMode&)
		 */
		void setFullscreen(const VideoMode& mode) override;

		/**
		 * @copydoc RenderWindowCore::setWindowed
		 */
		void setWindowed(UINT32 width, UINT32 height) override;

		/**
		 * @copydoc RenderWindowCore::setHidden
		 */
		void setHidden(bool hidden) override;

		/**
		 * @copydoc	RenderWindowCore::minimize
		 */
		void minimize() override;

		/**
		 * @copydoc	RenderWindowCore::maximize
		 */
		void maximize() override;

		/**
		 * @copydoc	RenderWindowCore::restore
		 */
		void restore() override;

		/**
		 * @copydoc RenderWindowCore::move
		 */
		void move(INT32 left, INT32 top) override;

		/**
		 * @copydoc RenderWindowCore::resize
		 */
		void resize(UINT32 width, UINT32 height) override;

		/**
		 * @copydoc RenderWindowCore::copyContentsToMemory
		 */
		void copyToMemory(PixelData &dst, FrameBuffer buffer);

		/**
		 * @copydoc RenderWindowCore::swapBuffers
		 */
		void swapBuffers() override;

		/**
		 * @copydoc RenderWindowCore::getCustomAttribute
		 */
		void getCustomAttribute(const String& name, void* pData) const override;

		/**
		 * @copydoc RenderWindowCore::setActive
		 */
		virtual void setActive(bool state) override;

		/**
		 * @copydoc RenderWindowCore::_windowMovedOrResized
		 */
		void _windowMovedOrResized() override;

		/**
		 * @brief	Returns handle to device context associated with the window.
		 */
		HDC _getHDC() const { return mHDC; }

		/**
		 * @brief	Returns internal window handle.
		 */
		HWND _getHWnd() const { return mHWnd; }

	protected:
		friend class Win32GLSupport;

		/**
		 * @copydoc	CoreObjectCore::initialize
		 */
		virtual void initialize() override;

		/**
		 * @brief	Calculates window size based on provided client area size and currently set window style. 
		 */
		void getAdjustedWindowSize(UINT32 clientWidth, UINT32 clientHeight, UINT32* winWidth, UINT32* winHeight);

		/**
		 * @copydoc	RenderWindowCore::getProperties
		 */
		const RenderTargetProperties& getPropertiesInternal() const override { return mProperties; }

		/**
		 * @copydoc	RenderWindowCore::getSyncedProperties
		 */
		RenderWindowProperties& getSyncedProperties() override { return mSyncedProperties; }

		/**
		 * @copydoc	RenderWindowCore::syncProperties
		 */
		void syncProperties() override;

	protected:
		friend class Win32RenderWindow;

		Win32GLSupport &mGLSupport;
		HDC	mHDC;
		DWORD mWindowedStyle;
		DWORD mWindowedStyleEx;
		bool mIsExternal;
		bool mIsChild;
		char* mDeviceName;
		bool mIsExternalGLControl;
		int mDisplayFrequency;
		bool mShowOnSwap;
		HWND mHWnd;
		SPtr<Win32Context> mContext;
		Win32RenderWindowProperties mProperties;
		Win32RenderWindowProperties mSyncedProperties;
    };

	/**
	 * @brief	Render window implementation for Windows.
	 *
	 * @note	Sim thread only.
	 */
	class BS_RSGL_EXPORT Win32RenderWindow : public RenderWindow
	{
	public:
		~Win32RenderWindow() { }

		/**
		 * @copydoc RenderWindow::screenToWindowPos
		 */
		void getCustomAttribute(const String& name, void* pData) const override;

		/**
		 * @copydoc RenderWindow::screenToWindowPos
		 */
		Vector2I screenToWindowPos(const Vector2I& screenPos) const override;

		/**
		 * @copydoc RenderWindow::windowToScreenPos
		 */
		Vector2I windowToScreenPos(const Vector2I& windowPos) const override;

		/**
		 * @copydoc	RenderWindow::getCore
		 */
		SPtr<Win32RenderWindowCore> getCore() const;

	protected:
		friend class GLRenderWindowManager;
		friend class Win32GLSupport;
		friend class Win32RenderWindowCore;

		Win32RenderWindow(const RENDER_WINDOW_DESC& desc, UINT32 windowId, Win32GLSupport& glsupport);

		/**
		 * @copydoc	RenderWindow::getProperties
		 */
		const RenderTargetProperties& getPropertiesInternal() const override { return mProperties; }

		/**
		 * @copydoc	RenderWindow::syncProperties
		 */
		void syncProperties() override;

		/**
		 * @brief	Retrieves internal window handle.
		 */
		HWND getHWnd() const;

	private:
		Win32GLSupport& mGLSupport;
		Win32RenderWindowProperties mProperties;
	};
}