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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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#ifndef _EXTENSIONS_SCANNER_GRID_HXX
#define _EXTENSIONS_SCANNER_GRID_HXX

#include <vcl/window.hxx>
#ifndef _SV_BUTTON_HXX
#include <vcl/button.hxx>
#endif
#include <vcl/lstbox.hxx>
#include <vcl/dialog.hxx>

class GridWindow : public ModalDialog
{
	// helper class for handles
	struct impHandle
	{
		Point			maPos;
		sal_uInt16		mnOffX;
		sal_uInt16		mnOffY;

		impHandle(const Point& rPos, sal_uInt16 nX, sal_uInt16 nY) 
		:	maPos(rPos), mnOffX(nX), mnOffY(nY) 
		{
		}
		
		bool operator<(const impHandle& rComp) const 
		{ 
			return (maPos.X() < rComp.maPos.X()); 
		}

		void draw(Window& rWin, const BitmapEx& rBitmapEx) 
		{
			const Point aOffset(rWin.PixelToLogic(Point(mnOffX, mnOffY)));
			rWin.DrawBitmapEx(maPos - aOffset, rBitmapEx);
		}

		bool isHit(Window& rWin, const Point& rPos)
		{
			const Point aOffset(rWin.PixelToLogic(Point(mnOffX, mnOffY)));
			const Rectangle aTarget(maPos - aOffset, maPos + aOffset);
			return aTarget.IsInside(rPos);
		}
	};

	Rectangle		m_aGridArea;

	double 			m_fMinX;
	double			m_fMinY;
	double			m_fMaxX;
	double			m_fMaxY;

	double			m_fChunkX;
	double			m_fMinChunkX;
	double			m_fChunkY;
	double			m_fMinChunkY;

	double*			m_pXValues;
	double*			m_pOrigYValues;
	int				m_nValues;
	double*			m_pNewYValues;

	sal_uInt16		m_BmOffX;
	sal_uInt16		m_BmOffY;

	sal_Bool			m_bCutValues;

	// stuff for handles
	std::vector< impHandle >	m_aHandles;
	sal_uInt32					m_nDragIndex;

	BitmapEx 		m_aMarkerBitmap;

	OKButton		m_aOKButton;
	CancelButton	m_aCancelButton;

	ListBox			m_aResetTypeBox;
	PushButton		m_aResetButton;


	Point transform( double x, double y );
	void transform( const Point& rOriginal, double& x, double& y );

	double findMinX();
	double findMinY();
	double findMaxX();
	double findMaxY();

	void drawGrid();
	void drawOriginal();
	void drawNew();
	void drawHandles();

	void computeExtremes();
	void computeChunk( double fMin, double fMax, double& fChunkOut, double& fMinChunkOut );
	void computeNew();
	double interpolate( double x, double* pNodeX, double* pNodeY, int nNodes );

	DECL_LINK( ClickButtonHdl, Button* );

	virtual void MouseMove( const MouseEvent& );
	virtual void MouseButtonDown( const MouseEvent& );
	virtual void MouseButtonUp( const MouseEvent& );
public:
	GridWindow( double* pXValues, double* pYValues, int nValues,
				Window* pParent, sal_Bool bCutValues = sal_True );
	~GridWindow();

	void setBoundings( double fMinX, double fMinY, double fMaxX, double fMaxY );
	double getMinX() { return m_fMinX; }
	double getMinY() { return m_fMinY; }
	double getMaxX() { return m_fMaxX; }
	double getMaxY() { return m_fMaxY; }

	int countValues() { return m_nValues; }
	double* getXValues() { return m_pXValues; }
	double* getOrigYValues() { return m_pOrigYValues; }
	double* getNewYValues() { return m_pNewYValues; }

	void drawLine( double x1, double y1, double x2, double y2 );

	virtual void Paint( const Rectangle& rRect );
};

#endif // _EXTENSIONS_SCANNER_GRID_HXX
