chartpanel.h

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

#ifndef CHARTPANEL_H_
#define CHARTPANEL_H_

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

class wxChartPanel;

class WXDLLIMPEXP_FREECHART ChartPanelMode
{
public:
    // IY: Virtual destructor needed otherwise behaviour is undefined.
    virtual ~ChartPanelMode() {}
    virtual void Init(wxChartPanel *chartPanel) = 0;
};


class WXDLLIMPEXP_FREECHART wxChartPanel : public wxScrolledWindow
{
public:
    wxChartPanel(wxWindow *parent, wxWindowID = wxID_ANY, Chart *chart = NULL,
        const wxPoint &pos = wxDefaultPosition, const wxSize &size = wxDefaultSize);
    virtual ~wxChartPanel();

    void SetChart(Chart *chart);

    Chart *GetChart();

    void SetMode(ChartPanelMode *mode);

    void SetAntialias(bool antialias);

    bool GetAntialias();

    wxBitmap CopyBackbuffer();

    //
    // ChartObserver
    //
    virtual void ChartChanged(Chart *chart);

    virtual void ChartScrollsChanged(Chart *chart);

    // TODO: Quick hack to allow axis plot to call to cause refresh from event - set back to private.
    void RedrawBackBitmap();

private:
    void ResizeBackBitmap(wxSize size);
    void RecalcScrollbars();

    //
    // Event handlers
    //
    void OnPaint(wxPaintEvent &ev);
    void OnSize(wxSizeEvent &ev);
    void OnScrollWin(wxScrollWinEvent &ev);
    void OnMouseEvents(wxMouseEvent &ev);

    void ScrollAxis(Axis *axis, int d);

    Chart *m_chart;

    wxBitmap m_backBitmap;

    bool m_antialias;

    ChartPanelMode *m_mode;

    DECLARE_EVENT_TABLE()
};


#endif /*CHARTPANEL_H_*/