numberaxis.h

// Name:    numberaxis.h
// Purpose: Number axis declaration.
// Author:    Moskvichev Andrey V.
// Created:    2008/11/07
// Copyright:    (c) 2008-2010 Moskvichev Andrey V.
// Licence:    wxWidgets licence

#ifndef NUMBERAXIS_H_
#define NUMBERAXIS_H_

#include <wx/axis/labelaxis.h>

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

    virtual bool UpdateBounds();

    void SetTickFormat(const wxString &tickFormat)
    {
        m_tickFormat = tickFormat;
    }

    wxDEPRECATED_MSG("Do not use this function, instead use SetMajorInterval.")
    void SetLabelCount(size_t labelCount) {}

    void IntegerValues(bool intValues = true)
    {
        if (m_intValues != intValues) 
        {
            m_intValues = intValues;
            // TODO recalc tick steps
        }
    }
    
    void ZeroOrigin(bool zeroOrigin = true)
    {
        if (m_zeroOrigin != zeroOrigin)
            m_zeroOrigin = zeroOrigin;
    }
    
    void ForceExtraMajorInterval(bool force = true)
    {
        if (m_extraMajorInterval != force)
            m_extraMajorInterval = force;
    }

    double GetMultiplier() const;

    void SetMultiplier(double multiplier);

    void SetFixedBounds(double minValue, double maxValue);

    virtual void GetDataBounds(double &minValue, double &maxValue) const;

    size_t GetLabelCount() const;

protected:
    virtual bool AcceptDataset(Dataset *dataset);
    
    double CalcNiceInterval(double value, bool round = false);
    
    void UpdateMajorIntervalValues();

    //
    // LabelAxis
    //
    virtual double GetValue(size_t step);

    virtual void GetLabel(size_t step, wxString &label);

    virtual bool IsEnd(size_t step);

    virtual bool HasLabels();

    virtual wxSize GetLongestLabelExtent(wxDC &dc);

    // Protected members.
    bool m_fixedBounds;
    bool m_hasLabels;
    double m_minValue;
    double m_maxValue;
    double m_labelInterval;
    size_t m_labelCount;

private:
    // Private members.
    wxString m_tickFormat;
    bool m_intValues;
    bool m_zeroOrigin;
    bool m_extraMajorInterval;
    double m_multiplier;
};

#endif /*NUMBERAXIS_H_*/