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

#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,
		m_nThumbHeight,
		m_nThumbTop,
		m_nPreThumbTop,
		m_nDragPos,
		m_nDragPoint,
		m_iClicked,
		m_iHitPrev,
		m_nMax,
		m_nMin,
		m_nPos,
		m_nPage,
		m_nTrackPos,
		m_wBar;

	bool m_bPause,
		m_bNotify,
		m_bDrag,
		m_bTrace;

	TTimer *m_pTimer;
	TCanvas *m_pCanvas;

	int HitTest( int X, int Y );
	void CalcThumbHeight();
	void CalcThumbTop();
	void DrawArrow( int iDirection, int iState );
	void DrawThumb( int iState, bool bEraseBk );

	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 WMMouseMove(TWMMouse &Message);
	MESSAGE void __fastcall CMMouseLeave(TMessage &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_MOUSEMOVE, TWMMouseMove, WMMouseMove)
		MESSAGE_HANDLER(CM_MOUSELEAVE, TMessage, CMMouseLeave)
		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;
	bool m_bAction;

	__fastcall virtual TSkinScrollBar(System::Classes::TComponent* AOwner);
	__fastcall ~TSkinScrollBar();
	bool IsDraging(){ return m_bDrag; };
	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