chart.h

// Name:    chart.h
// Purpose: chart declarations
// Author:  Moskvichev Andrey V., changes by Andreas Kuechler
// Created: 2008/11/07
// Copyright:   (c) 2008-2010 Moskvichev Andrey V.
// Licence: wxWidgets licence

#ifndef CHART_H_
#define CHART_H_

#include <wx/wxfreechartdefs.h>

#include <wx/refobject.h>
#include <wx/observable.h>
#include <wx/plot.h>

#include <wx/areadraw.h>

#include <wx/axis/axis.h>

#include <wx/title.h>

class WXDLLIMPEXP_FREECHART Chart;
class WXDLLIMPEXP_FREECHART wxChartPanel;

class WXDLLIMPEXP_FREECHART ChartObserver
{
public:
    ChartObserver();

    virtual ~ChartObserver();

    virtual void ChartChanged(Chart *chart) = 0;

    virtual void ChartScrollsChanged(Chart *chart) = 0;
};

class WXDLLIMPEXP_FREECHART Chart : public Observable<ChartObserver>, public PlotObserver, public AxisObserver
{
public:
    Chart(Plot *plot, const wxString &title = wxEmptyString, const wxColour &bgColor = wxColour(220, 220, 220));

    Chart(Plot *plot, Header* header = NULL, Footer* footer = NULL, const wxColour &bgColor = wxColour(220, 220, 220));

    virtual ~Chart();

    Plot *GetPlot()
    {
        return m_plot;
    }

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

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

    //  wxRect CalcPlotRect(wxDC &dc, wxRect rc);

    void SetTitle(wxString title)
    {
        SetHeader(new Header(title));
    }

    void SetHeader(Header* header)
    {
        wxREPLACE(m_header, header);
        FireChartChanged();
    }

    void SetFooter(Footer* footer)
    {
        wxREPLACE(m_footer, footer);
        FireChartChanged();
    }

    void SetMargin(wxCoord margin)
    {
        m_margin = margin;
        FireChartChanged();
    }

    //
    // TODO old scrolling code is deprecated,
    // will be used Zoom/pan feature instead.
    //

    void SetScrolledAxis(Axis *axis);

    Axis *GetHorizScrolledAxis();

    Axis *GetVertScrolledAxis();


    wxChartPanel *GetChartPanel();

    void SetChartPanel(wxChartPanel *chartPanel);

    //
    // PlotObserver
    //
    virtual void PlotNeedRedraw(Plot *plot);

    //
    // AxisObserver
    //
    virtual void AxisChanged(Axis *axis);

    virtual void BoundsChanged(Axis *axis);

private:
    void Init(Plot* plot, Header* header = NULL, Footer* footer = NULL, const wxColour &bgColor = wxColour(220, 220, 220));

    Plot *m_plot;
    AreaDraw *m_background;
    Header* m_header;
    Footer* m_footer;

    int m_headerGap;
    wxCoord m_margin;

    Axis *m_horizScrolledAxis;
    Axis *m_vertScrolledAxis;

    wxChartPanel *m_chartPanel;

    FIRE_WITH_THIS(ChartChanged);
    FIRE_WITH_THIS(ChartScrollsChanged);
};

#endif /*CHART_H_*/