#pragma once

/******************************************************************************
	KOverlaySurface abstracts a Direct Draw overlay surface.
******************************************************************************/

#include <dxexcep.h>

class KOverlaySurface : public KDDSurface
{
protected:

#ifdef KDEBUG
	KException::KDxException e_dx;
#endif
	
	DDOVERLAYFX m_fx;
	bool m_no_src_color_keying;
	DWORD m_flag;
	RECT m_dest_rect, m_src_rect;
	bool m_src_rect_not_set;

public:

	KOverlaySurface();

	~KOverlaySurface();

	bool Init(DDCAPS & ddcaps, DWORD w, DWORD h, int buf_count);

	void Discharge(void);

	HRESULT CreateOverlaySurface(IDirectDraw7 * pDD);

	HRESULT UpdateOverlay(IDirectDrawSurface7 * dest_surface);

	void Hide(void);
	void Show(void);

	void SetDestRect(RECT&);
	RECT& GetDestRect(void);
	void SetSrcRect(RECT&);
	RECT& GetSrcRect(void);	

	HRESULT GetBackBuffer(KOverlaySurface&);
	HRESULT Flip(void);

	IDirectDrawSurface7 * GetSurface(void);
	void SetSurface(IDirectDrawSurface7 * surface);

	void SetOverlaySourceColorKey(DDCAPS & ddcaps, DWORD color);
	bool OverlaySourceColorKeySet(void);
};