//---------------------------------------------------------------------------

#ifndef SkinScrollBarUnitH
#define SkinScrollBarUnitH

#define TIME_DELAY 		200
#define TIME_NOTIFY 	100
#define THUMB_BORDER 	7
#define THUMB_MINSIZE 	(THUMB_BORDER * 2)

#define STATE_NORMAL	0
#define STATE_HIGHLIGHT 1
#define STATE_PUSH 		2

class  TSkinScrollBar : public TScrollBar
{
private:
//	int m_nTileHeight,   //add by tj 2013/11/18
	int	m_nThumbSize,
		m_nThumbPos,
		m_nPreThumbPos,
		m_nDragPos,
		m_nDragPoint,
		m_iClicked,
		m_iHitPrev,
		m_nMax,
		m_nMin,
		m_nPos,
		m_nPage,
		m_nTrackPos;

	bool m_bPause,
		m_bNotify,
		m_bDrag,
		m_bTrace,
		m_bAction;

	TTimer *m_pTimer;
	TControlCanvas *m_pCanvas;

	int HitTest( int X, int Y );
	void CalcThumbSize();
	void CalcThumbPos();
	void DrawArrow( int iDirection, int iState );
	void DrawThumb( int iState, bool bEraseBk, int iPageUD=-1 );
	void DrawBound();

	void __fastcall TimerProc(TObject* Sender);

	MESSAGE void __fastcall WMPaint(Winapi::Messages::TWMPaint &Message);
	MESSAGE void __fastcall WMLButtonDown(TWMMouse &Message);
	MESSAGE void __fastcall WMLButtonUp(TWMMouse &Message);
	MESSAGE void __fastcall WMLButtonDblClk(TWMMouse &Message);
//	MESSAGE void __fastcall WMRButtonDown(TWMMouse &Message){};  //add by tj 2013/11/18
	MESSAGE void __fastcall WMRButtonUp(TWMMouse &Message){};    //add by tj 2013/11/18
	MESSAGE void __fastcall WMMouseMove(TWMMouse &Message);
//	MESSAGE void __fastcall SBMSetScrollInfo(TMessage &Message);
//	MESSAGE void __fastcall SBMGetScrollInfo(TMessage &Message);

	BEGIN_MESSAGE_MAP
		MESSAGE_HANDLER(WM_PAINT, TWMPaint, WMPaint)
		MESSAGE_HANDLER(WM_LBUTTONDOWN, TWMLButtonDown, WMLButtonDown)
		MESSAGE_HANDLER(WM_LBUTTONUP, TWMLButtonUp, WMLButtonUp)
		MESSAGE_HANDLER(WM_LBUTTONDBLCLK, TWMLButtonDblClk, WMLButtonDblClk)
//		MESSAGE_HANDLER(WM_RBUTTONDOWN, TWMRButtonDown, WMRButtonDown)
		MESSAGE_HANDLER(WM_RBUTTONUP, TWMRButtonUp, WMRButtonUp) //add by tj 2013/11/18
		MESSAGE_HANDLER(WM_MOUSEMOVE, TWMMouseMove, WMMouseMove) //add by tj 2013/11/18
//		MESSAGE_HANDLER(CM_MOUSELEAVE, TMessage, CMMouseLeave)   //add by tj 2013/11/25 12:35
//		MESSAGE_HANDLER(SBM_SETSCROLLINFO, TMessage, SBMSetScrollInfo)
//		MESSAGE_HANDLER(SBM_GETSCROLLINFO, TMessage, SBMGetScrollInfo)
	END_MESSAGE_MAP(TScrollBar)

protected:
	virtual void __fastcall PaintWindow(HDC DC);

public:
	TWinControl	*m_pWndCtrl;

	__fastcall virtual TSkinScrollBar(System::Classes::TComponent* AOwner, bool bVertical=true);//ȱʡ´¹Ö±
	__fastcall ~TSkinScrollBar();

	void __fastcall CMMouseEnter(TObject *Sender);
	void __fastcall CMMouseLeave(TObject *Sender); //add by tj 2013/11/25 12:35

	bool IsDraging(){ return m_bDrag; };
	bool IsOperable(){ return m_nMax > m_nMin; };
	void __fastcall SetPosition(int Value, bool bRedraw=true);
	void __fastcall SetPageSize(int Value, bool bRedraw=true);
	void __fastcall SetRange(int AMin, int AMax, bool bRedraw=true);
	void __fastcall GetScrollRange(int* nMin, int* nMax);
	int  __fastcall GetScrollPos();
	int  __fastcall GetPageSize();
};

//---------------------------------------------------------------------------
#endif