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

#ifndef ShowBarsPanelUnitH
#define ShowBarsPanelUnitH

#include "SkinScrollBarUnit.h"
#include <Vcl.Imaging.pngimage.hpp>

#define BAR_HEADER 	0x01
#define BAR_TITLE 	0x02
#define BAR_DATA 	0x04

#define COLOR_BORDER RGB(164,115,70)

//---------------------------------------------------------------------------
class TShowBarsPanel : public Extctrls::TPanel
{
private:
	//背景及小节栏图片
	TBitmap *m_imgBackground,
			*m_imgBarTitle;

//	int m_sFont7,
//		m_sFont8,
//		m_sFont9,
//		m_sFont14,
//		m_sFont16;

	void CalcViewArea();
	void DrawBars();

	MESSAGE void __fastcall WMEraseBkgnd(Winapi::Messages::TWMEraseBkgnd &Message);
	MESSAGE void __fastcall WMSize(Winapi::Messages::TWMSize &Message);
	MESSAGE void __fastcall WMVScroll(Winapi::Messages::TWMScroll &Message);
	MESSAGE void __fastcall WMMouseWheel(TWMMouseWheel &Message);

	BEGIN_MESSAGE_MAP
		MESSAGE_HANDLER(WM_ERASEBKGND, TWMEraseBkgnd, WMEraseBkgnd)
		MESSAGE_HANDLER(WM_SIZE, TWMSize, WMSize)
		MESSAGE_HANDLER(WM_VSCROLL, TWMVScroll, WMVScroll)
		MESSAGE_HANDLER(WM_MOUSEWHEEL, TWMMouseWheel, WMMouseWheel)
	END_MESSAGE_MAP(Vcl::Extctrls::TPanel)

protected:
	//显示相关
	int m_nRowShow,
		m_nBeginShowRow,
		m_nColumnNum,
		m_nRowNum,
		m_nBarNum,

		m_nBarWidth,
		m_nBarHeight,
		m_nDataWidth,
		m_nDataHeight,
		m_nRowGapHeight,
		m_nTitleHeight,
		m_nBarDrawHeight,

		m_nLeftBound,
		m_nLeftOriBound,
		m_nRightBound,
		m_nTopBound;

	TSkinScrollBar *m_sbVert;

	//录音/播放相关
	bool m_bPlaying;
	int m_iPlayBar,
		m_iPlayPoint;

	virtual void __fastcall CreateWnd();
	virtual void __fastcall Paint(void);
	virtual void __fastcall BarPosChanged(){};
	virtual void __fastcall SetBarTitle( int iBar, String& strText ){};
	virtual void __fastcall DrawBarBkgnd( int iBar, int left, int top ){};
	virtual void __fastcall DrawBarContext( int iBar, int left, int top ){};
	virtual void __fastcall DrawBarOperation( int iBar, int left, int top ){};
	virtual void __fastcall DrawChord( TRect& rcDraw, int iChord );
	void GetChordKey( int iChord, int& iMainKey, int& iAjustKey, int& iType );

public:
	inline void Play( bool bPlay )
		{ m_bPlaying=bPlay; };
	inline bool IsPlaying()
		{ return m_bPlaying; };
	void InitialVars(int nBarNum);
	void SetPlayPoint( int iBar, int iPoint );
	void InvalidateBar( int iBar, int iBeginPoint, int iEndPoint, int iArea=BAR_DATA );
	void ScrollView( int nPos, bool bRedraw=true );
	DWORD HitTest( int X, int Y, int& iHitType, bool bAbsorb=true, bool bIgnoreBound=false );

	__fastcall virtual TShowBarsPanel(System::Classes::TComponent* AOwner);
	__fastcall ~TShowBarsPanel();
};

#endif