2D Graph ActiveX Control

#if !defined(AFX_NTGRAPHCTL_H__4E772943_A5F2_4917_B53F_DE7BE01A6E36__INCLUDED_)
#define AFX_NTGRAPHCTL_H__4E772943_A5F2_4917_B53F_DE7BE01A6E36__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

#ifndef MAX
#define MAX 1
#endif

#ifndef MIN
#define MIN 0
#endif

#define MAX_ELEMENTS 100

class CGraphElement {

public :
	CGraphElement() ;
	BOOL bIsPlotAvailable ;
	double *dValueX ;
	double *dValueY ;
	COLORREF m_plotColor ;
	BOOL AllocElement(UINT nPoint);
	BOOL FreeElement();

protected:
	BOOL bBufferAllocated;
} ;

// NTGraphCtl.h : Declaration of the CNTGraphCtrl ActiveX Control class.

/////////////////////////////////////////////////////////////////////////////
// CNTGraphCtrl : See NTGraphCtl.cpp for implementation.

class CNTGraphCtrl : public COleControl
{
	DECLARE_DYNCREATE(CNTGraphCtrl)

// Constructor
public:
	CNTGraphCtrl();

// Overrides
	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CNTGraphCtrl)
	public:
	virtual void OnDraw(CDC* pdc, const CRect& rcBounds, const CRect& rcInvalid);
	virtual BOOL PreCreateWindow(CREATESTRUCT& cs);
	virtual void DoPropExchange(CPropExchange* pPX);
	virtual void OnResetState();
	virtual DWORD GetControlFlags();
	//}}AFX_VIRTUAL

// Implementation
protected:
	~CNTGraphCtrl();

	DECLARE_OLECREATE_EX(CNTGraphCtrl)    // Class factory and guid
	DECLARE_OLETYPELIB(CNTGraphCtrl)      // GetTypeInfo
	DECLARE_PROPPAGEIDS(CNTGraphCtrl)     // Property page IDs
	DECLARE_OLECTLTYPE(CNTGraphCtrl)	  // Type name and misc status

	// Subclassed control support
	BOOL IsSubclassedControl();
	LRESULT OnOcmCommand(WPARAM wParam, LPARAM lParam);

// Message maps
	//{{AFX_MSG(CNTGraphCtrl)
	afx_msg void OnMouseMove(UINT nFlags, CPoint point);
	afx_msg void OnLButtonDown(UINT nFlags, CPoint point);
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()

// Dispatch maps
	//{{AFX_DISPATCH(CNTGraphCtrl)
	BOOL m_showGrid;
	afx_msg void OnShowGridChanged();
	BOOL m_changeMappingMode;
	afx_msg void OnChangeMappingModeChanged();
	CString m_strLabelX;
	afx_msg void OnXLabelChanged();
	CString m_strLabelY;
	afx_msg void OnYLabelChanged();
	OLE_COLOR m_gridColor;
	afx_msg void OnGridColorChanged();
	OLE_COLOR m_labelColor;
	afx_msg void OnLabelColorChanged();
	OLE_COLOR m_axisColor;
	afx_msg void OnAxisColorChanged();
	short m_nGridX;
	afx_msg void OnNGridXChanged();
	short m_nGridY;
	afx_msg void OnNGridYChanged();
	double m_minX;
	afx_msg void OnMinXChanged();
	double m_maxX;
	afx_msg void OnMaxXChanged();
	double m_minY;
	afx_msg void OnMinYChanged();
	double m_maxY;
	afx_msg void OnMaxYChanged();
	BOOL m_showCursor;
	afx_msg void OnShowCursorChanged();
	CString m_strGraphTitle;
	afx_msg void OnGraphTitleChanged();
	OLE_COLOR m_cursorColor;
	afx_msg void OnCursorColorChanged();
	afx_msg OLE_COLOR GetPlotColor();
	afx_msg void SetPlotColor(OLE_COLOR nNewValue);
	afx_msg short GetElement();
	afx_msg void SetElement(short nNewValue);
	afx_msg short GetElementCount();
	afx_msg void SetElementCount(short nNewValue);
	afx_msg void ClearGraph();
	afx_msg BOOL CreateElement(long nElement);
	afx_msg BOOL SetRange(double MinX, double MaxX,double MinY,double MaxY);
	afx_msg BOOL SetXYValue(double x, double y, long index, short iElementId);
	//}}AFX_DISPATCH
	DECLARE_DISPATCH_MAP()

	afx_msg void AboutBox();

// Event maps
	//{{AFX_EVENT(CNTGraphCtrl)
	//}}AFX_EVENT
	DECLARE_EVENT_MAP()


// Dispatch and event IDs
public:
	enum {
	//{{AFX_DISP_ID(CNTGraphCtrl)
	dispidShowGrid = 1L,
	dispidChangeMappingMode = 2L,
	dispidXLabel = 3L,
	dispidYLabel = 4L,
	dispidGridColor = 5L,
	dispidLabelColor = 6L,
	dispidAxisColor = 7L,
	dispidNGridX = 8L,
	dispidNGridY = 9L,
	dispidMinX = 10L,
	dispidMaxX = 11L,
	dispidMinY = 12L,
	dispidMaxY = 13L,
	dispidPlotColor = 17L,
	dispidElement = 18L,
	dispidElementCount = 19L,
	dispidShowCursor = 14L,
	dispidGraphTitle = 15L,
	dispidCursorColor = 16L,
	dispidClearGraph = 20L,
	dispidCreateElement = 21L,
	dispidSetRange = 22L,
	dispidSetXYValue = 23L,
	//}}AFX_DISP_ID
	};

	CPoint Corrdinate(double x, double y);
	CGraphElement mpElement[MAX_ELEMENTS] ;
	int nElementCount ;
	COLORREF m_BGColor ;
	BOOL bFontIsCreate ;


protected:
	BOOL m_bIsCursorInRange;
	void DrawCursor();
	double m_dXCur;
	double m_dYCur;
	short m_ElementId;
	void ResCalc();
	void CalcRect();
	void CreateFont();
	void DrawGraphTitle();
	void DrawGrid();
	void DrawAxis();
	void DrawTicks();
	void DrawAxisLabel();
	void PlotElement();



	int nPointCount ;
	int nPlotIndex ;
	double dResY, dResX ;
	double dRangeY[2], dRangeX[2];


	BOOL bIsElementAllocated ;

private:
 CRect m_ctlRect,m_clientRect, m_axisRect;
 CDC* m_pDC;

 	CFont *pTickFont ;
	CFont *pTitleFont;
	CFont *pXLabelFont;
	CFont *pYLabelFont;

 //Function to Intialize DC and mapping mode
 void PrepareForDrawing(CRect rect); 


};

//{{AFX_INSERT_LOCATION}}
// Microsoft Visual C++ will insert additional declarations immediately before the previous line.

#endif // !defined(AFX_NTGRAPHCTL_H__4E772943_A5F2_4917_B53F_DE7BE01A6E36__INCLUDED)