logarithmicnumberaxis.h

// Name:    logarithmicnumberaxis.h
// Purpose: label axis implementation
// Author:  Andreas Kuechler
// Created: 2008/11/07
// Copyright:   (c) 2010 Andreas Kuechler
// Licence: wxWidgets licence

#ifndef LOGARITHMICNUMBERAXIS_H_INCLUDED
#define LOGARITHMICNUMBERAXIS_H_INCLUDED

#include <wx/axis/numberaxis.h>

class WXDLLIMPEXP_FREECHART LogarithmicNumberAxis : public NumberAxis
{
    DECLARE_CLASS(LogarithmicNumberAxis);
public:
    LogarithmicNumberAxis(AXIS_LOCATION location);
    virtual ~LogarithmicNumberAxis();

  virtual void UpdateBounds();
  virtual double BoundValue(double value);
  virtual bool IsVisible(double value);

    void SetLogBase(double logBase);

    void EnableLongLabelExponent(bool enable = true);

    virtual wxCoord ToGraphics(wxDC &dc, int minCoord, int gRange, double value);

    virtual double ToData(wxDC &dc, int minCoord, int gRange, wxCoord g);

protected:
    virtual void GetLabel(size_t step, wxString& label);
    virtual double GetValue(size_t step);

  double GetMinValue(Dataset* dataset);
  double GetMaxValue(Dataset* dataset);

private:
    bool m_longExponent;

    double m_logBase;
};

#endif // LOGARITHMICNUMBERAXIS_H_INCLUDED