E:/Sources Misc/ChartDemo/ChartCtrl/ChartCandlestickSerie.h

/*
 *
 *      ChartCandlestickSerie.h
 *
 *      Written by Cédric Moonen (cedric_moonen@hotmail.com)
 *
 *
 *
 *      This code may be used for any non-commercial and commercial purposes in a compiled form.
 *      The code may be redistributed as long as it remains unmodified and providing that the 
 *      author name and this disclaimer remain intact. The sources can be modified WITH the author 
 *      consent only.
 *      
 *      This code is provided without any garanties. I cannot be held responsible for the damage or
 *      the loss of time it causes. Use it at your own risks
 *
 *      An e-mail to notify me that you are using this code is appreciated also.
 *
 *
 */

#pragma once
#include "ChartSerieBase.h"

struct SChartCandlestickPoint
{
        SChartCandlestickPoint() { }
        SChartCandlestickPoint(double XValue, double LowVal, 
                double HighVal, double OpenVal, double CloseVal):
                        XVal(XValue), Low(LowVal), High(HighVal),
                                Open(OpenVal), Close(CloseVal) { }

        double XVal;
        double Low;
        double High;
        double Open;
        double Close;

        double GetX() const { return XVal; }
        double GetY() const { return (Low+High)/2; }
        double GetXMin() const { return XVal; }
        double GetXMax() const { return XVal; }
        double GetYMin() const { return Low; }
        double GetYMax() const { return High; }
};


class CChartCandlestickSerie : public CChartSerieBase<SChartCandlestickPoint>
{
public:
        CChartCandlestickSerie(CChartCtrl* pParent);
        ~CChartCandlestickSerie();


        bool IsPointOnSerie(const CPoint& screenPoint, unsigned& uIndex) const;


        void AddPoint(double XVal, double Low, double High, 
                                  double Open, double Close);
        void SetWidth(int Width);
        int  GetWidth()         { return m_iCandlestickWidth; }

protected:

    void DrawLegend(CDC* pDC, const CRect& rectBitmap) const;


        void Draw(CDC* pDC);

        void DrawAll(CDC *pDC);

private:
        void DrawCandleStick(CDC *pDC, SChartCandlestickPoint Point);

        int m_iCandlestickWidth;

        // Caches the pen and brushes to avoid creating them for each point
        mutable CBrush ShadowBrush;
        mutable CPen NewPen;
        mutable CPen ShadowPen;
        mutable CBrush BrushFill;
        mutable CBrush BrushEmpty;
};

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