plot.h

// Name:    plot.h
// Purpose: plot base class declarations
// Author:  Moskvichev Andrey V.
// Created: 2008/11/07
// Copyright:   (c) 2008-2010 Moskvichev Andrey V.
// Licence: wxWidgets licence

#ifndef PLOT_H_
#define PLOT_H_

#include <wx/wxfreechartdefs.h>
#include <wx/observable.h>

#include <wx/areadraw.h>

class WXDLLIMPEXP_FREECHART Plot;
class WXDLLIMPEXP_FREECHART wxChartPanel;

class WXDLLIMPEXP_FREECHART PlotObserver
{
public:
    PlotObserver();

    virtual ~PlotObserver();

    virtual void PlotNeedRedraw(Plot *_plot) = 0;
};

class WXDLLIMPEXP_FREECHART Plot : public Observable<PlotObserver>
{
public:
    Plot();
    virtual ~Plot();

    virtual void Draw(wxDC &dc, wxRect rc);

    virtual void DrawNoDataMessage(wxDC &dc, wxRect rc);

    void SetChartPanel(wxChartPanel *chartPanel);

    wxChartPanel *GetChartPanel();


    void SetBackground(AreaDraw *background)
    {
        wxREPLACE(m_background, background);
        FirePlotNeedRedraw();
    }

    void SetTextNoData(const wxString &textNoData)
    {
        m_textNoData = textNoData;
        FirePlotNeedRedraw();
    }

protected:
    virtual bool HasData() = 0;

    virtual void DrawData(wxDC &dc, wxRect rc) = 0;

    virtual void ChartPanelChanged(wxChartPanel *oldPanel, wxChartPanel *newPanel);

    FIRE_WITH_THIS(PlotNeedRedraw);

private:
    wxFont m_textNoDataFont;
    wxString m_textNoData;

    AreaDraw *m_background;

    wxChartPanel *m_chartPanel;
};

#endif /*PLOT_H_*/