mathplot.h

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// Name:            mathplot.cpp
// Purpose:         Framework for plotting in wxWindows
// Original Author: David Schalig
// Maintainer:      Davide Rondini
// Contributors:    Jose Luis Blanco, Val Greene, Lionel Reynaud, Dave Nadler, MortenMacFly
// Created:         21/07/2003
// Last edit:       29/03/2025
// Copyright:       (c) David Schalig, Davide Rondini
// Licence:         wxWindows licence

#ifndef _MP_MATHPLOT_H_
#define _MP_MATHPLOT_H_

//this definition uses windows dll to export function.
//WXDLLIMPEXP_MATHPLOT definition definition changed to WXDLLIMPEXP_MATHPLOT
//mathplot_EXPORTS will be defined by cmake
#ifdef mathplot_EXPORTS
#define WXDLLIMPEXP_MATHPLOT WXEXPORT
#define WXDLLIMPEXP_DATA_MATHPLOT(type) WXEXPORT type
#else // not making DLL
#define WXDLLIMPEXP_MATHPLOT
#define WXDLLIMPEXP_DATA_MATHPLOT(type) type
#endif

#if defined(__GNUG__) && !defined(__APPLE__)
#pragma interface "mathplot.h"
#endif

#include <vector>

// #include <wx/wx.h>
#include <wx/defs.h>
#include <wx/menu.h>
#include <wx/scrolwin.h>
#include <wx/event.h>
#include <wx/dynarray.h>
#include <wx/pen.h>
#include <wx/dcmemory.h>
#include <wx/string.h>
#include <wx/print.h>
#include <wx/image.h>
#include <wx/intl.h>

#include <cmath>
#include <deque>

#define ENABLE_MP_CONFIG
#ifdef ENABLE_MP_CONFIG
#include "MathPlotConfig.h"
#endif // ENABLE_MP_CONFIG

#define ENABLE_MP_NAMESPACE
#ifdef ENABLE_MP_NAMESPACE
namespace MathPlot
{
#endif // ENABLE_MP_NAMESPACE

#ifdef ENABLE_MP_DEBUG
// For memory leak debug
#ifdef _WINDOWS
#ifdef _DEBUG
#include <crtdbg.h>
#define DEBUG_NEW new(_NORMAL_BLOCK ,__FILE__, __LINE__)
#else
#define DEBUG_NEW new
#endif // _DEBUG
#endif // _WINDOWS
#endif // ENABLE_MP_DEBUG

// Separation for axes when set close to border
#define X_BORDER_SEPARATION 40
#define Y_BORDER_SEPARATION 60

#define mpX_LOCALTIME 0x10

#define mpX_UTCTIME 0x20
#define mpX_RAWTIME mpX_UTCTIME

// An epsilon for float comparison to 0
#define EPSILON   1e-8
#define ISNOTNULL(x)  (fabs(x) > EPSILON)

// A small extra margin for the plot boundary
#define EXTRA_MARGIN  8

//-----------------------------------------------------------------------------
// classes
//-----------------------------------------------------------------------------

class WXDLLIMPEXP_MATHPLOT mpLayer;
class WXDLLIMPEXP_MATHPLOT mpFunction;
class WXDLLIMPEXP_MATHPLOT mpLine;
class WXDLLIMPEXP_MATHPLOT mpHorizontalLine;
class WXDLLIMPEXP_MATHPLOT mpVerticalLine;
class WXDLLIMPEXP_MATHPLOT mpFX;
class WXDLLIMPEXP_MATHPLOT mpFY;
class WXDLLIMPEXP_MATHPLOT mpFXY;
class WXDLLIMPEXP_MATHPLOT mpFXYVector;
class WXDLLIMPEXP_MATHPLOT mpProfile;
class WXDLLIMPEXP_MATHPLOT mpChart;
class WXDLLIMPEXP_MATHPLOT mpBarChart;
class WXDLLIMPEXP_MATHPLOT mpScale;
class WXDLLIMPEXP_MATHPLOT mpScaleX;
class WXDLLIMPEXP_MATHPLOT mpScaleY;
class WXDLLIMPEXP_MATHPLOT mpInfoLayer;
class WXDLLIMPEXP_MATHPLOT mpInfoCoords;
class WXDLLIMPEXP_MATHPLOT mpInfoLegend;
class WXDLLIMPEXP_MATHPLOT mpWindow;
class WXDLLIMPEXP_MATHPLOT mpText;
class WXDLLIMPEXP_MATHPLOT mpTitle;
class WXDLLIMPEXP_MATHPLOT mpPrintout;
class WXDLLIMPEXP_MATHPLOT mpMovableObject;
class WXDLLIMPEXP_MATHPLOT mpCovarianceEllipse;
class WXDLLIMPEXP_MATHPLOT mpPolygon;
class WXDLLIMPEXP_MATHPLOT mpBitmapLayer;

#ifdef ENABLE_MP_CONFIG
class MathPlotConfigDialog;
#endif // ENABLE_MP_CONFIG

typedef union
{
    struct
    {
        wxCoord startPx;
        wxCoord endPx;
        wxCoord startPy;
        wxCoord endPy;
    };
    struct
    {
        wxCoord left;
        wxCoord top;
        wxCoord right;
        wxCoord bottom;
    };
    struct
    {
        wxCoord x1;
        wxCoord y1;
        wxCoord x2;
        wxCoord y2;
    };
    wxCoord tab[4];
} mpRect;

struct mpFloatRect
{
  struct
  {
    double Xmin;
    double Xmax;
    double Ymin;
    double Ymax;
    double Y2min;
    double Y2max;
  };
  mpFloatRect() : Xmin(0.0), Xmax(0.0), Ymin(0.0), Ymax(0.0), Y2min(0.0), Y2max(0.0) {}
  bool PointIsInside(double x, double y) const {
    if( (x < Xmin || x > Xmax) ||
        (y < Ymin || y > Ymax)  ) return false;
    return true;
  }
  void UpdateBoundingBoxToInclude(double x, double y, double y2=0) {
    if      (x  < Xmin ) Xmin = x;
    else if (x  > Xmax ) Xmax = x;
    if      (y  < Ymin ) Ymin = y;
    else if (y  > Ymax ) Ymax = y;
    if      (y2 < Y2min) Y2min = y2;
    else if (y2 > Y2max) Y2max = y2;
  }
  void InitializeBoundingBox(double x, double y, double y2=0) {
    Xmin = Xmax = x;
    Ymin = Ymax = y;
    Y2min = Y2max = y2;
  }
  bool IsNotSet() const { const mpFloatRect def; return *this==def; }
  #if (defined(__cplusplus) && (__cplusplus > 201703L)) // C++ > C++17 (MSVC requires <AdditionalOptions>/Zc:__cplusplus</AdditionalOptions>
    bool operator==(const mpFloatRect&) const = default;
  #else
    // We compare with an epsilon precision
    // NOTE: should be unnecessary as we are looking for any changes; normally this will be an exact match or a real change...
    bool operator ==(const mpFloatRect &rect) const
    {
      auto Same = [this,rect] (double a, double b) { return fabs(a - b) < EPSILON; };
      return Same(Xmin,  rect.Xmin)  && Same(Xmax,  rect.Xmax) &&
             Same(Ymin,  rect.Ymin)  && Same(Ymax,  rect.Ymax) &&
             Same(Y2min, rect.Y2min) && Same(Y2max, rect.Y2max)  ;
    }
  #endif
};

enum
{
  mpID_FIT = 2000,         
  mpID_ZOOM_IN,            
  mpID_ZOOM_OUT,           
  mpID_CENTER,             
  mpID_LOCKASPECT,         
  mpID_TOGGLE_GRID,        
  mpID_TOGGLE_COORD,       
  mpID_SCREENSHOT,         
#ifdef ENABLE_MP_CONFIG
  mpID_CONFIG,             
#endif // ENABLE_MP_CONFIG
  mpID_LOAD_FILE,          
  mpID_HELP_MOUSE,         
  mpID_FULLSCREEN          
};

typedef enum __mp_Location_Type
{
  mpMarginLeftCenter,
  mpMarginTopLeft,
  mpMarginTopCenter,
  mpMarginTopRight,
  mpMarginRightCenter,
  mpMarginBottomLeft,
  mpMarginBottomCenter,
  mpMarginBottomRight,
  mpMarginNone,
  mpCursor // only for mpInfoCoords
} mpLocation;

typedef enum __XAxis_Align_Type
{
  mpALIGN_BORDER_BOTTOM = 10,
  mpALIGN_BOTTOM,
  mpALIGN_CENTERX,
  mpALIGN_TOP,
  mpALIGN_BORDER_TOP
} mpXAxis_Align;

typedef enum __YAxis_Align_Type
{
  mpALIGN_BORDER_LEFT = 20,
  mpALIGN_LEFT,
  mpALIGN_CENTERY,
  mpALIGN_RIGHT,
  mpALIGN_BORDER_RIGHT
} mpYAxis_Align;

typedef enum __Plot_Align_Name_Type
{
  mpALIGN_NW = 5,
  mpALIGN_NE,
  mpALIGN_SE,
  mpALIGN_SW
} mpPlot_Align;

typedef enum __mp_Style_Type
{
  mpLegendLine,   
  mpLegendSquare, 
  mpLegendSymbol  
} mpLegendStyle;

typedef enum __mp_Direction_Type
{
  mpVertical,  
  mpHorizontal 
} mpLegendDirection;

typedef enum __Symbol_Type
{
  mpsNone,
  mpsCircle,
  mpsSquare,
  mpsUpTriangle,
  mpsDownTriangle,
  mpsCross,
  mpsPlus
} mpSymbol;

//-----------------------------------------------------------------------------
// mpLayer sub_type values
//-----------------------------------------------------------------------------

typedef enum __Info_Type
{
  mpiNone, // never used
  mpiInfo,
  mpiCoords,
  mpiLegend
} mpInfoType;

typedef enum __Text_Type
{
  mptNone, // never used
  mptText,
  mptTitle
} mpTextType;

typedef enum __Function_Type
{
  mpfNone,
  mpfFX,
  mpfFY,
  mpfFXY,
  mpfFXYVector,
  mpfMovable,
  mpfLine,
  mpfAllType
} mpFunctionType;

typedef enum __Scale_Type
{
  mpsScaleNone,
  mpsScaleX,
  mpsScaleY,
  mpsAllType
} mpScaleType;

typedef enum __Chart_Type
{
  mpcChartNone,
  mpcBarChart,
  mpcPieChart,
  mpcAllType
} mpChartType;

//-----------------------------------------------------------------------------
// mpLayer
//-----------------------------------------------------------------------------

typedef enum __mp_Layer_Type
{
  mpLAYER_UNDEF,   
  mpLAYER_AXIS,    
  mpLAYER_PLOT,    
  mpLAYER_INFO,    
  mpLAYER_TEXT,    
  mpLAYER_BITMAP,  
  mpLAYER_LINE,    
  mpLAYER_CHART,   
} mpLayerType;

typedef enum __mp_Layer_ZOrder
{
  mpZIndex_BACKGROUND,   
  mpZIndex_AXIS,         
  mpZIndex_LINE,         
  mpZIndex_PLOT,         
  mpZIndex_CHART,        
  mpZIndex_INFO,         
  mpZIndex_TEXT,         
  mpZIndex_END           
} mpLayerZOrder;

class WXDLLIMPEXP_MATHPLOT mpLayer: public wxObject
{
  public:
    mpLayer(mpLayerType layerType);

    virtual ~mpLayer()
    {
      ;
    }

    void SetWindow(mpWindow &w)
    {
      m_win = &w;
    }

    virtual bool HasBBox()
    {
      return true;
    }

    virtual void GetBBox(mpFloatRect *m_bound);

    mpLayerType GetLayerType() const
    {
      return m_type;
    }

    int GetLayerSubType() const
    {
      return m_subtype;
    }

    virtual bool IsLayerType(mpLayerType type, int *sub_type)
    {
      *sub_type = m_subtype;
      return (m_type == type);
    }

    virtual double GetMinX()
    {
      return -1.0;
    }

    virtual double GetMaxX()
    {
      return 1.0;
    }

    virtual double GetMinY()
    {
      return -1.0;
    }

    virtual double GetMaxY()
    {
      return 1.0;
    }

    void Plot(wxDC &dc, mpWindow &w);

    void SetName(const wxString &name)
    {
      m_name = name;
    }

    const wxString& GetName() const
    {
      return m_name;
    }

    void SetFont(const wxFont &font)
    {
      m_font = font;
    }

    const wxFont& GetFont() const
    {
      return m_font;
    }

    void SetFontColour(const wxColour &colour)
    {
      m_fontcolour = colour;
    }

    const wxColour& GetFontColour() const
    {
      return m_fontcolour;
    }

    void SetPen(const wxPen &pen)
    {
      m_pen = pen;
    }

    const wxPen& GetPen() const
    {
      return m_pen;
    }

    void SetBrush(const wxBrush &brush)
    {
      if (brush == wxNullBrush)
        m_brush = *wxTRANSPARENT_BRUSH;
      else
        m_brush = brush;
    }

    const wxBrush& GetBrush() const
    {
      return m_brush;
    }

    void SetShowName(bool show)
    {
      m_showName = show;
    }

    inline bool GetShowName() const
    {
      return m_showName;
    }

    void SetDrawOutsideMargins(bool drawModeOutside)
    {
      m_drawOutsideMargins = drawModeOutside;
    }

    bool GetDrawOutsideMargins() const
    {
      return m_drawOutsideMargins;
    }

    wxBitmap GetColourSquare(int side = 16);

    inline bool IsVisible() const
    {
      return m_visible;
    }

    virtual void SetVisible(bool show)
    {
      m_visible = show;
    }

    inline bool IsTractable() const
    {
      return m_tractable;
    }

    virtual void SetTractable(bool track)
    {
      m_tractable = track;
    }

    void SetAlign(int align)
    {
      m_flags = align;
    }

    int GetAlign() const
    {
      return m_flags;
    }

    void SetCanDelete(bool canDelete)
    {
      m_CanDelete = canDelete;
    }

    bool GetCanDelete(void) const
    {
      return m_CanDelete;
    }

    mpLayerZOrder GetZIndex(void) const
    {
      return m_ZIndex;
    }

  protected:
    const mpLayerType m_type;   
    mpWindow* m_win;            
    int m_subtype;              
    wxFont m_font;              
    wxColour m_fontcolour;      
    wxPen m_pen;                
    wxBrush m_brush;            
    wxString m_name;            
    bool m_showName;            
    bool m_drawOutsideMargins;  
    bool m_visible;             
    bool m_tractable;           
    int m_flags;                
    mpRect m_plotBoundaries;    
    bool m_CanDelete;           
    mpLayerZOrder m_ZIndex;     

    void UpdateContext(wxDC &dc) const;

    virtual void DoPlot(wxDC &dc, mpWindow &w) = 0;

    virtual void DoBeforePlot()
    {
      ;
    }

    void CheckLog(double *x, double *y);

  private:
    bool m_busy;                
    mpLayer() = delete; // default ctor not implemented/permitted

  wxDECLARE_DYNAMIC_CLASS(mpLayer);
};

//-----------------------------------------------------------------------------
// mpInfoLayer
//-----------------------------------------------------------------------------

class WXDLLIMPEXP_MATHPLOT mpInfoLayer: public mpLayer
{
  public:
    mpInfoLayer();

    mpInfoLayer(wxRect rect, const wxBrush &brush = *wxTRANSPARENT_BRUSH, mpLocation location = mpMarginNone);

    virtual ~mpInfoLayer();

    virtual void SetVisible(bool show);

    virtual void UpdateInfo(mpWindow &w, wxEvent &event);

    virtual bool HasBBox()
    {
      return false;
    }

    virtual void ErasePlot(wxDC &dc, mpWindow &w);

    virtual bool Inside(const wxPoint &point);

    virtual void Move(wxPoint delta);

    virtual void UpdateReference();

    wxPoint GetPosition() const
    {
      return m_dim.GetPosition();
    }

    wxSize GetSize() const
    {
      return m_dim.GetSize();
    }

    const wxRect& GetRectangle() const
    {
      return m_dim;
    }

    void SetLocation(mpLocation location)
    {
      m_location = location;
    }

    mpLocation GetLocation() const
    {
      return m_location;
    }

  protected:
    wxRect m_dim;           
    wxRect m_oldDim;        
    wxBitmap* m_info_bmp;   
    wxPoint m_reference;    
    int m_winX, m_winY;     
    mpLocation m_location;  

    virtual void DoPlot(wxDC &dc, mpWindow &w);

    void SetInfoRectangle(mpWindow &w, int width = 0, int height = 0);

  wxDECLARE_DYNAMIC_CLASS(mpInfoLayer);
};

class WXDLLIMPEXP_MATHPLOT mpInfoCoords: public mpInfoLayer
{
  public:
    mpInfoCoords();

    mpInfoCoords(mpLocation location);

    mpInfoCoords(wxRect rect, const wxBrush &brush = *wxTRANSPARENT_BRUSH, mpLocation location = mpMarginNone);

    ~mpInfoCoords()
    {
      ;
    }

    virtual void UpdateInfo(mpWindow &w, wxEvent &event);

    virtual void ErasePlot(wxDC &dc, mpWindow &w);

    void SetLabelMode(unsigned int mode, unsigned int time_conv = mpX_RAWTIME)
    {
      m_labelType = mode;
      m_timeConv = time_conv;
    }

    void SetSeriesCoord(bool show)
    {
      m_series_coord = show;
    }

    bool IsSeriesCoord() const
    {
      return m_series_coord;
    }

    virtual wxString GetInfoCoordsText(double xVal, double yVal, double y2Val, bool isY2Axis = false);

    void SetPenSeries(const wxPen &pen)
    {
      m_penSeries = pen;
    }

  protected:
    wxString m_content;  
    unsigned int m_labelType;
    unsigned int m_timeConv;
    wxCoord m_mouseX;
    wxCoord m_mouseY;
    bool m_series_coord;
    wxPen m_penSeries;

    virtual void DoPlot(wxDC &dc, mpWindow &w);

  wxDECLARE_DYNAMIC_CLASS(mpInfoCoords);
};

class WXDLLIMPEXP_MATHPLOT mpInfoLegend: public mpInfoLayer
{
  public:
    mpInfoLegend();

    mpInfoLegend(wxRect rect, const wxBrush &brush = *wxWHITE_BRUSH, mpLocation location = mpMarginNone);

    ~mpInfoLegend() {}

    void SetItemMode(mpLegendStyle mode)
    {
      m_item_mode = mode;
      m_needs_update = true;
    }

    mpLegendStyle GetItemMode() const
    {
      return m_item_mode;
    }

    void SetItemDirection(mpLegendDirection mode)
    {
      m_item_direction = mode;
      m_needs_update = true;
    }

    mpLegendDirection GetItemDirection() const
    {
      return m_item_direction;
    }

    void SetNeedUpdate()
    {
      m_needs_update = true;
    }

    int GetPointed(mpWindow &w, wxPoint eventPoint);

  protected:
    mpLegendStyle m_item_mode;
    mpLegendDirection m_item_direction;

    virtual void DoPlot(wxDC &dc, mpWindow &w);

  private:
    struct LegendDetail
    {
        unsigned int layerIdx; 
        wxCoord legendEnd;     
    };
    std::vector<LegendDetail> m_LegendDetailList; 
    bool m_needs_update; 

    void UpdateBitmap(wxDC &dc, mpWindow &w);

  wxDECLARE_DYNAMIC_CLASS(mpInfoLegend);
};

//-----------------------------------------------------------------------------
// mpLayer implementations - functions
//-----------------------------------------------------------------------------

class WXDLLIMPEXP_MATHPLOT mpFunction: public mpLayer
{
  public:
    mpFunction(mpLayerType layerType = mpLAYER_PLOT, const wxString &name = wxEmptyString, bool useY2Axis = false);

    void SetContinuity(bool continuity)
    {
      m_continuous = continuity;
    }

    bool GetContinuity() const
    {
      return m_continuous;
    }

    void SetStep(unsigned int step)
    {
      m_step = step;
    }

    unsigned int GetStep() const
    {
      return m_step;
    }

    void SetSymbol(mpSymbol symbol)
    {
      m_symbol = symbol;
    }

    mpSymbol GetSymbol() const
    {
      return m_symbol;
    }

    void SetSymbolSize(int size)
    {
      m_symbolSize = size;
      m_symbolSize2 = size / 2;
    }

    int GetSymbolSize() const
    {
      return m_symbolSize;
    }

    virtual bool DrawSymbol(wxDC &dc, wxCoord x, wxCoord y);

    void SetY2Axis(bool _useY2)
    {
      m_UseY2Axis = _useY2;
    }

    bool GetY2Axis() const
    {
      return m_UseY2Axis;
    }

  protected:
    bool m_continuous;          
    mpSymbol m_symbol;          
    int m_symbolSize;           
    int m_symbolSize2;          
    unsigned int m_step;        
    bool m_UseY2Axis;           

  wxDECLARE_DYNAMIC_CLASS(mpFunction);
};

class WXDLLIMPEXP_MATHPLOT mpLine: public mpFunction
{
  public:
    mpLine(double value, const wxPen &pen = *wxGREEN_PEN);

    // We don't want to include line (horizontal or vertical) in BBox computation
    virtual bool HasBBox() override
    {
      return false;
    }

    double GetValue() const
    {
      return m_value;
    }

    void SetValue(const double value)
    {
      m_value = value;
    }

    bool IsHorizontal(void) const
    {
      return m_IsHorizontal;
    }

  protected:
    double m_value;
    bool m_IsHorizontal;

    wxDECLARE_DYNAMIC_CLASS(mpLine);
};

class WXDLLIMPEXP_MATHPLOT mpHorizontalLine: public mpLine
{
  public:
    mpHorizontalLine(double yvalue, const wxPen &pen = *wxGREEN_PEN, bool useY2Axis = false);

    void SetYValue(const double yvalue)
    {
      SetValue(yvalue);
    }

  protected:

    virtual void DoPlot(wxDC &dc, mpWindow &w);

    wxDECLARE_DYNAMIC_CLASS(mpHorizontalLine);
};

class WXDLLIMPEXP_MATHPLOT mpVerticalLine: public mpLine
{
  public:
    mpVerticalLine(double xvalue, const wxPen &pen = *wxGREEN_PEN);

    void SetXValue(const double xvalue)
    {
      SetValue(xvalue);
    }

  protected:

    virtual void DoPlot(wxDC &dc, mpWindow &w);

    wxDECLARE_DYNAMIC_CLASS(mpVerticalLine);
};

class WXDLLIMPEXP_MATHPLOT mpFX: public mpFunction
{
  public:
    mpFX(const wxString &name = wxEmptyString, int flags = mpALIGN_RIGHT, bool useY2Axis = false);

    virtual double GetY(double x) = 0;

    double DoGetY(double x);

  protected:

    virtual void DoPlot(wxDC &dc, mpWindow &w);

  wxDECLARE_DYNAMIC_CLASS(mpFX);
};

class WXDLLIMPEXP_MATHPLOT mpFY: public mpFunction
{
  public:
    mpFY(const wxString &name = wxEmptyString, int flags = mpALIGN_TOP, bool useY2Axis = false);

    virtual double GetX(double y) = 0;

    double DoGetX(double y);

  protected:

    virtual void DoPlot(wxDC &dc, mpWindow &w);

  wxDECLARE_DYNAMIC_CLASS(mpFY);
};

class WXDLLIMPEXP_MATHPLOT mpFXY: public mpFunction
{
  public:
    mpFXY(const wxString &name = wxEmptyString, int flags = mpALIGN_NE, bool viewAsBar = false, bool useY2Axis = false);

    virtual void Rewind() = 0;

    virtual void Clear()
    {
      ;
    }

    virtual int GetSize()
    {
      return 0;
    }

    virtual bool GetNextXY(double *x, double *y) = 0;

    bool DoGetNextXY(double *x, double *y);

    void SetViewMode(bool asBar);

    int GetBarWidth(void) const
    {
      return m_BarWidth;
    }

    bool ViewAsBar(void) const
    {
      return m_ViewAsBar;
    }

  protected:

    // Data to calculate label positioning
    wxCoord maxDrawX, minDrawX, maxDrawY, minDrawY;

    // Min delta between 2 x coordinate (used for view as bar)
    double m_deltaX, m_deltaY;

    // The width of a bar
    int m_BarWidth;

    // Plot data as bar graph
    bool m_ViewAsBar = false;

    // Can the series be deleted?
    bool m_CanDelete = true;

    virtual void DoPlot(wxDC &dc, mpWindow &w);

    void UpdateViewBoundary(wxCoord xnew, wxCoord ynew);

  wxDECLARE_DYNAMIC_CLASS(mpFXY);
};

//-----------------------------------------------------------------------------
// mpFXYVector - provided by Jose Luis Blanco
//-----------------------------------------------------------------------------

class WXDLLIMPEXP_MATHPLOT mpFXYVector: public mpFXY
{
  public:
    mpFXYVector(const wxString &name = wxEmptyString, int flags = mpALIGN_NE, bool viewAsBar = false, bool useY2Axis = false);

    virtual ~mpFXYVector()
    {
      Clear();
    }

    void SetData(const std::vector<double> &xs, const std::vector<double> &ys);

    void Clear();

    virtual int GetSize()
    {
      return m_xs.size();
    }

    bool AddData(const double x, const double y, bool updatePlot);

    void SetReserve(int reserve)
    {
      m_reserveXY = reserve;
      m_xs.reserve(m_reserveXY);
      m_ys.reserve(m_reserveXY);
    }

    int GetReserve() const
    {
      return m_reserveXY;
    }

  protected:
    std::vector<double> m_xs, m_ys;

    int m_reserveXY;

    size_t m_index;

    double m_minX, m_maxX, m_minY, m_maxY, m_lastX, m_lastY;

    inline void Rewind()
    {
      m_index = 0;
    }

    virtual bool GetNextXY(double *x, double *y);

    void DrawAddedPoint(double x, double y);

    virtual double GetMinX()
    {
      return m_minX;
    }

    virtual double GetMinY()
    {
      return m_minY;
    }

    virtual double GetMaxX()
    {
      return m_maxX;
    }

    virtual double GetMaxY()
    {
      return m_maxY;
    }

  private:
    void First_Point(double x, double y);

    void Check_Limit(double val, double *min, double *max, double *last, double *delta);

  wxDECLARE_DYNAMIC_CLASS(mpFXYVector);
};

class WXDLLIMPEXP_MATHPLOT mpProfile: public mpFunction
{
  public:
    mpProfile(const wxString &name = wxEmptyString, int flags = mpALIGN_TOP);

    virtual double GetY(double x) = 0;

  protected:

    virtual void DoPlot(wxDC &dc, mpWindow &w);

  wxDECLARE_DYNAMIC_CLASS(mpProfile);
};

//-----------------------------------------------------------------------------
// mpChart
//-----------------------------------------------------------------------------
class WXDLLIMPEXP_MATHPLOT mpChart: public mpFunction
{
  public:
    mpChart(const wxString &name = wxEmptyString);

    ~mpChart()
    {
      Clear();
    }

    void SetChartValues(const std::vector<double> &data);

    void SetChartLabels(const std::vector<std::string> &labelArray);

    void AddData(const double &data, const std::string &label);

    virtual void Clear();

    virtual bool HasBBox()
    {
      return (values.size() > 0);
    }

  protected:
    std::vector<double> values;
    std::vector<std::string> labels;

    double m_max_value;
    double m_total_value;

    wxDECLARE_DYNAMIC_CLASS(mpChart);
};

//-----------------------------------------------------------------------------
// mpBarChart  - provided by Jose Davide Rondini
//-----------------------------------------------------------------------------
/* Defines for bar charts label positioning. */
#define mpBAR_NONE      0       
#define mpBAR_AXIS_H    1       
#define mpBAR_AXIS_V    2       
#define mpBAR_INSIDE    3       
#define mpBAR_TOP       4       


class WXDLLIMPEXP_MATHPLOT mpBarChart: public mpChart
{
  public:
    mpBarChart(const wxString &name = wxEmptyString, double width = 0.5);

    ~mpBarChart()
    {
      Clear();
    }

    void SetBarColour(const wxColour &colour);

    void SetColumnWidth(const double colWidth)
    {
      m_width = colWidth;
    }

    void SetBarLabelPosition(int position);

    virtual double GetMinX();

    virtual double GetMaxX();

    virtual double GetMinY();

    virtual double GetMaxY();

  protected:

    double m_width;
    wxColour m_barColour;
    int m_labelPos;
    double m_labelAngle;

    virtual void DoPlot(wxDC &dc, mpWindow &w);

    wxDECLARE_DYNAMIC_CLASS(mpBarChart);
};

class WXDLLIMPEXP_MATHPLOT mpPieChart: public mpChart
{
  public:
    mpPieChart(const wxString &name = wxEmptyString, double radius = 20);

    ~mpPieChart()
    {
      Clear();
      colours.clear();
    }

    void SetPieColours(const std::vector<wxColour> &colourArray);

    virtual double GetMinX()
    {
      return -m_radius;
    }

    virtual double GetMaxX()
    {
      return m_radius;
    }

    virtual double GetMinY()
    {
      return -m_radius;
    }

    virtual double GetMaxY()
    {
      return m_radius;
    }

  protected:

    double m_radius;
    std::vector<wxColour> colours;

    virtual void DoPlot(wxDC &dc, mpWindow &w);

    const wxColour& GetColour(unsigned int id);

    wxDECLARE_DYNAMIC_CLASS(mpBarChart);
};

//-----------------------------------------------------------------------------
// mpLayer implementations - furniture (scales, ...)
//-----------------------------------------------------------------------------
class WXDLLIMPEXP_MATHPLOT mpScale: public mpLayer
{
  public:
    mpScale(const wxString &name, int flags, bool grids);

    virtual bool HasBBox()
    {
      return false;
    }

    void ShowTicks(bool ticks)
    {
      m_ticks = ticks;
    }

    bool GetShowTicks() const
    {
      return m_ticks;
    }

    void ShowGrids(bool grids)
    {
      m_grids = grids;
    }

    bool GetShowGrids() const
    {
      return m_grids;
    }

    virtual void SetLabelFormat(const wxString &format)
    {
      m_labelFormat = format;
    }

    const wxString& GetLabelFormat() const
    {
      return m_labelFormat;
    }

    void SetGridPen(const wxPen &pen)
    {
      m_gridpen = pen;
    }

    const wxPen& GetGridPen() const
    {
      return m_gridpen;
    }

    void SetAuto(bool automaticScalingIsEnabled)
    {
      m_auto = automaticScalingIsEnabled;
    }

    bool GetAuto() const
    {
      return m_auto;
    }

    void SetMinScale(double min)
    {
      m_min = min;
    }

    double GetMinScale() const
    {
      return m_min;
    }

    void SetMaxScale(double max)
    {
      m_max = max;
    }

    double GetMaxScale() const
    {
      return m_max;
    }

    virtual bool IsLogAxis() = 0;
    virtual void SetLogAxis(bool log) = 0;

  protected:
    wxPen m_gridpen;         
    bool m_ticks;            
    bool m_grids;            
    bool m_auto;             
    double m_min, m_max;     
    wxString m_labelFormat;  

    virtual int GetOrigin(mpWindow &w) = 0;
    double GetStep(double scale);
    virtual void DrawScaleName(wxDC &dc, mpWindow &w, int origin, int labelSize) = 0;

    wxString FormatLogValue(double n);

  wxDECLARE_DYNAMIC_CLASS(mpScale);
};

#define mpX_NORMAL  0x00

#define mpX_TIME  0x01

#define mpX_HOURS 0x02

#define mpX_DATE 0x03

#define mpX_DATETIME 0x04

#define mpX_USER 0x05

#define mpX_NONE 0x06

class WXDLLIMPEXP_MATHPLOT mpScaleX: public mpScale
{
  public:
    mpScaleX(const wxString &name = _T("X"), int flags = mpALIGN_CENTERX, bool grids = false, unsigned int type = mpX_NORMAL) :
        mpScale(name, flags, grids)
    {
      m_subtype = mpsScaleX;
      m_labelType = type;
      m_timeConv = mpX_RAWTIME;
    }

    virtual void SetLabelFormat(const wxString &format)
    {
      mpScale::SetLabelFormat(format);
      m_labelType = mpX_USER;
    }

    unsigned int GetLabelMode() const
    {
      return m_labelType;
    }

    void SetLabelMode(unsigned int mode, unsigned int time_conv = mpX_RAWTIME)
    {
      m_labelType = mode;
      m_timeConv = time_conv;
    }

    virtual bool IsLogAxis();
    virtual void SetLogAxis(bool log);

  protected:
    unsigned int m_labelType;  
    unsigned int m_timeConv;   

    virtual void DoPlot(wxDC &dc, mpWindow &w);

    virtual int GetOrigin(mpWindow &w);
    virtual void DrawScaleName(wxDC &dc, mpWindow &w, int origin, int labelSize);
    wxString FormatValue(const wxString &fmt, double n);

  wxDECLARE_DYNAMIC_CLASS(mpScaleX);
};

class WXDLLIMPEXP_MATHPLOT mpScaleY: public mpScale
{
  public:
    mpScaleY(const wxString &name = _T("Y"), int flags = mpALIGN_CENTERY, bool grids = false, bool Y2Axis = false) :
        mpScale(name, flags, grids)
    {
      m_subtype = mpsScaleY;
      m_isY2Axis = Y2Axis;
    }

    virtual bool IsLogAxis();
    virtual void SetLogAxis(bool log);

    virtual bool IsY2Axis()
    {
      return m_isY2Axis;
    }
    virtual void SetY2Axis(bool y2Axis);

  protected:
    bool m_isY2Axis;

    virtual void DoPlot(wxDC &dc, mpWindow &w);

    virtual int GetOrigin(mpWindow &w);
    virtual void DrawScaleName(wxDC &dc, mpWindow &w, int origin, int labelSize);

  wxDECLARE_DYNAMIC_CLASS(mpScaleY);
};

//-----------------------------------------------------------------------------
// mpWindow
//-----------------------------------------------------------------------------

#define mpMOUSEMODE_DRAG    0

#define mpMOUSEMODE_ZOOMBOX 1

//WX_DECLARE_HASH_MAP( int, mpLayer*, wxIntegerHash, wxIntegerEqual, mpLayerList );
typedef std::deque<mpLayer*> mpLayerList;

typedef std::function<void(void *Sender, const wxString &classname, bool &cancel)> mpOnDeleteLayer;

typedef std::function<void(void *Sender, wxMouseEvent &event, bool &cancel)> mpOnUserMouseAction;

class mpMagnet
{
  public:
    mpMagnet()
    {
      m_IsDrawn = false;
      m_rightClick = false;
      m_IsWasDrawn = false;
    }
    ~mpMagnet()
    {
      ;
    }
    void UpdateBox(wxCoord left, wxCoord top, wxCoord width, wxCoord height)
    {
      m_domain = wxRect(left, top, width, height);
      m_plot_size = wxRect(left, top, width + left, height + top);
    }
    void UpdateBox(const wxRect &size)
    {
      m_domain = size;
      m_plot_size = wxRect(size.GetLeft(), size.GetTop(),
          size.GetWidth() + size.GetLeft(), size.GetHeight() + size.GetTop());
    }
    void Plot(wxClientDC &dc, const wxPoint &mousePos);
    void ClearPlot(wxClientDC &dc);
    void UpdatePlot(wxClientDC &dc, const wxPoint &mousePos);
    void SaveDrawState(void)
    {
      m_IsWasDrawn = m_IsDrawn;
      // In any cases, set to false because we erase and repaint all the plot
      m_IsDrawn = false;
    }

    void SetRightClick(void)
    {
      m_rightClick = true;
    }

  private:
    wxRect m_domain;           
    wxRect m_plot_size;        
    wxPoint m_mousePosition;   
    bool m_IsDrawn;            
    bool m_IsWasDrawn;         
    bool m_rightClick;         
    void DrawCross(wxClientDC &dc) const;
};

class WXDLLIMPEXP_MATHPLOT mpWindow: public wxWindow
{
  public:
    mpWindow()
    {
      InitParameters();
    }

    mpWindow(wxWindow *parent, wxWindowID id = wxID_ANY, const wxPoint &pos = wxDefaultPosition, const wxSize &size = wxDefaultSize,
        long flags = 0);

    ~mpWindow();

    wxMenu* GetPopupMenu()
    {
      return &m_popmenu;
    }

    bool AddLayer(mpLayer *layer, bool refreshDisplay = true);

    bool DelLayer(mpLayer *layer, bool alsoDeleteObject, bool refreshDisplay = true);

    void DelAllLayers(bool alsoDeleteObject, bool refreshDisplay = true);

    void DelAllPlot(bool alsoDeleteObject, mpFunctionType func = mpfAllType, bool refreshDisplay = true);

    mpLayer* GetLayer(int position);

    mpLayer* GetLayersType(int position, mpLayerType type);

    mpLayer* GetLayerPlot(int position, mpFunctionType func = mpfAllType);

    mpLayer* GetLayerAxis(int position, mpScaleType scale = mpsAllType);

    mpFXYVector* GetXYSeries(unsigned int n, const wxString &name = _T("Serie "), bool create = true);

    mpLayer* GetClosestPlot(wxCoord ix, wxCoord iy, double *xnear, double *ynear, bool *isY2Axis);

    mpLayer* GetLayerByName(const wxString &name);

    mpLayer* GetLayerByClassName(const wxString &name);

    void RefreshLegend(void);

    mpScaleX* GetLayerXAxis();

    mpScaleY* GetLayerYAxis();

    mpScaleY* GetLayerY2Axis();

    void SetScaleX(const double scaleX)
    {
      if (ISNOTNULL(scaleX))
        m_scaleX = scaleX;
      UpdateAll();
    }

    double GetScaleX(void) const
    {
      return m_scaleX;
    }

    void SetScaleY(const double scaleY)
    {
      if (ISNOTNULL(scaleY))
        m_scaleY = scaleY;
      UpdateAll();
    }

    double GetScaleY(bool Y2 = false) const
    {
      if (Y2)
        return m_scaleY2;
      else
        return m_scaleY;
    } // Schaling's method: maybe another method exists with the same name

    [[deprecated("Incomplete, use UpdateBBox instead")]]
    void SetBound();

    mpFloatRect Get_Bound(void) const
    {
      return m_bound;
    }

    void SetPosX(const double posX)
    {
      m_posX = posX;
      UpdateAll();
    }

    double GetPosX(void) const
    {
      return m_posX;
    }

    void SetPosY(const double posY, const double posY2)
    {
      m_posY = posY;
      m_posY2 = posY2;
      UpdateAll();
    }

    double GetPosY(bool Y2 = false) const
    {
      if (Y2)
        return m_posY2;
      else
        return m_posY;
    }

    void SetScreen(const int scrX, const int scrY)
    {
      m_scrX = scrX;
      m_scrY = scrY;
      m_plotWidth = m_scrX - (m_margin.left + m_margin.right);
      m_plotHeight = m_scrY - (m_margin.top + m_margin.bottom);

      m_plotBoundaries.endPx = m_scrX;
      m_plotBoundariesMargin.endPx = m_scrX - m_margin.right;
      m_plotBoundaries.endPy = m_scrY;
      m_plotBoundariesMargin.endPy = m_scrY - m_margin.bottom;

      m_PlotArea = wxRect(m_margin.left - EXTRA_MARGIN, m_margin.top - EXTRA_MARGIN,
          m_plotWidth + 2*EXTRA_MARGIN, m_plotHeight + 2*EXTRA_MARGIN);

      m_magnet.UpdateBox(m_PlotArea);
    }

    int GetScreenX(void) const
    {
      return m_scrX;
    }

    int GetScreenY(void) const
    {
      return m_scrY;
    }

    void SetPos(const double posX, const double posY, const double posY2)
    {
      m_posX = posX;
      m_posY = posY;
      m_posY2 = posY2;
      UpdateAll();
    }

    inline double p2x(const wxCoord pixelCoordX) const
    {
      return m_posX + pixelCoordX / m_scaleX;
    }

    inline double p2y(const wxCoord pixelCoordY, bool Y2 = false) const
    {
      if (Y2)
        return m_posY2 - pixelCoordY / m_scaleY2;
      else
        return m_posY - pixelCoordY / m_scaleY;
    }

    inline wxCoord x2p(const double x) const
    {
      return (wxCoord)((x - m_posX) * m_scaleX);
    }

    inline wxCoord y2p(const double y, bool Y2 = false) const
    {
      if (Y2)
        return (wxCoord)((m_posY2 - y) * m_scaleY2);
      else
        return (wxCoord)((m_posY - y) * m_scaleY);
    }

    void EnableDoubleBuffer(const bool enabled)
    {
      m_enableDoubleBuffer = enabled;
    }

    void EnableMousePanZoom(const bool enabled)
    {
      m_enableMouseNavigation = enabled;
    }

    void LockAspect(bool enable = true);

    inline bool IsAspectLocked() const
    {
      return m_lockaspect;
    }

    inline bool IsRepainting() const
    {
      return m_repainting;
    }

    void Fit();

    void Fit(const mpFloatRect &rect, wxCoord *printSizeX = NULL, wxCoord *printSizeY = NULL);

    void ZoomIn(const wxPoint &centerPoint = wxDefaultPosition);

    void ZoomOut(const wxPoint &centerPoint = wxDefaultPosition);

    void ZoomInX();

    void ZoomOutX();

    void ZoomInY();

    void ZoomOutY();

    void ZoomRect(wxPoint p0, wxPoint p1);

    void UpdateAll();

    // Added methods by Davide Rondini

    unsigned int CountLayers();

    unsigned int CountAllLayers()
    {
      return (unsigned int)m_layers.size();
    }

    unsigned int CountLayersType(mpLayerType type);
    unsigned int CountLayersFXYPlot();

    //void PrintGraph(mpPrintout *print);

    mpFloatRect GetDesiredBoundingBox() const { return m_desired; }

    double GetDesiredXmin() const
    {
      return m_desired.Xmin;
    }

    double GetDesiredXmax() const
    {
      return m_desired.Xmax;
    }

    double GetDesiredYmin() const
    {
      return m_desired.Ymin;
    }

    double GetDesiredYmax() const
    {
      return m_desired.Ymax;
    }

    void GetBoundingBox(double *bbox) const;
    mpFloatRect *GetBoundingBox(void)
    {
      return &m_bound;
    }

    void SetMPScrollbars(bool status);

    bool GetMPScrollbars() const
    {
      return m_enableScrollBars;
    }

    bool SaveScreenshot(const wxString &filename, int type = wxBITMAP_TYPE_BMP, wxSize imageSize = wxDefaultSize, bool fit = false);

    wxBitmap* BitmapScreenshot(wxSize imageSize = wxDefaultSize, bool fit = false);

    void ClipboardScreenshot(wxSize imageSize = wxDefaultSize, bool fit = false);

    bool LoadFile(const wxString &filename);

    static double m_zoomIncrementalFactor;

    void SetMargins(int top, int right, int bottom, int left);

    void SetMarginTop(int top)
    {
      SetMargins(top, m_margin.right, m_margin.bottom, m_margin.left);
    }

    int GetMarginTop() const
    {
      return m_margin.top;
    }

    void SetMarginRight(int right)
    {
      SetMargins(m_margin.top, right, m_margin.bottom, m_margin.left);
    }

    int GetMarginRight() const
    {
      return m_margin.right;
    }

    void SetMarginBottom(int bottom)
    {
      SetMargins(m_margin.top, m_margin.right, bottom, m_margin.left);
    }

    int GetMarginBottom() const
    {
      return m_margin.bottom;
    }

    void SetMarginLeft(int left)
    {
      SetMargins(m_margin.top, m_margin.right, m_margin.bottom, left);
    }

    int GetMarginLeft() const
    {
      return m_margin.left;
    }

    int GetPlotWidth() const
    {
      return m_plotWidth;
    }

    int GetPlotHeight() const
    {
      return m_plotHeight;
    }

    mpRect GetPlotBoundaries(bool with_margin) const
    {
      mpRect bond;
      if (with_margin)
        bond = m_plotBoundariesMargin;
      else
        bond = m_plotBoundaries;
      bond.startPx -= EXTRA_MARGIN;
      bond.endPx += EXTRA_MARGIN;
      bond.startPy -= EXTRA_MARGIN;
      bond.endPy += EXTRA_MARGIN;
      return bond;
    }

    void SetDrawBox(bool drawbox)
    {
      m_drawBox = drawbox;
    }

    bool GetDrawBox() const
    {
      return m_drawBox;
    }

    mpInfoLayer* IsInsideInfoLayer(const wxPoint &point);

    void SetLayerVisible(const wxString &name, bool viewable);

    bool IsLayerVisible(const wxString &name);

    bool IsLayerVisible(const unsigned int position);

    void SetLayerVisible(const unsigned int position, bool viewable);

    void SetColourTheme(const wxColour &bgColour, const wxColour &drawColour, const wxColour &axesColour);

    const wxColour& GetAxesColour() const
    {
      return m_axColour;
    }

    const wxColour& GetbgColour() const
    {
      return m_bgColour;
    }

    void SetbgColour(const wxColour &colour)
    {
      m_bgColour = colour;
    }

    void SetOnDeleteLayer(const mpOnDeleteLayer &event)
    {
      m_OnDeleteLayer = event;
    }

    void UnSetOnDeleteLayer()
    {
      m_OnDeleteLayer = NULL;
    }

    void SetOnUserMouseAction(const mpOnUserMouseAction &userMouseEventHandler)
    {
      m_OnUserMouseAction = userMouseEventHandler;
    }

    void UnSetOnUserMouseAction()
    {
      m_OnUserMouseAction = NULL;
    }

    bool IsLogXaxis() const
    {
      return m_LogXaxis;
    }

    bool IsLogYaxis() const
    {
      return m_LogYaxis;
    }

    void SetLogXaxis(bool log)
    {
      m_LogXaxis = log;
    }

    void SetLogYaxis(bool log)
    {
      m_LogYaxis = log;
    }

    bool GetMagnetize() const
    {
      return m_magnetize;
    }

    void SetMagnetize(bool mag)
    {
      m_magnetize = mag;
    }

#ifdef ENABLE_MP_CONFIG
    void RefreshConfigWindow();
    MathPlotConfigDialog* GetConfigWindow(bool Create = false);
#endif // ENABLE_MP_CONFIG

    void Update_CountY2Axis(bool Y2Axis);

    bool Y2AxisExist(void) const
    {
      return m_countY2Axis > 0;
    }

  protected:
    virtual void OnPaint(wxPaintEvent &event);                    
    virtual void OnSize(wxSizeEvent &event);                      
    virtual void OnShowPopupMenu(wxMouseEvent &event);            
    virtual void OnCenter(wxCommandEvent &event);                 
    virtual void OnFit(wxCommandEvent &event);                    
    virtual void OnToggleGrids(wxCommandEvent &event);            
    virtual void OnToggleCoords(wxCommandEvent &event);           
    virtual void OnScreenShot(wxCommandEvent &event);             
    virtual void OnFullScreen(wxCommandEvent &event);             
#ifdef ENABLE_MP_CONFIG
    virtual void OnConfiguration(wxCommandEvent &event);          
#endif // ENABLE_MP_CONFIG
    virtual void OnLoadFile(wxCommandEvent &event);               
    virtual void OnZoomIn(wxCommandEvent &event);                 
    virtual void OnZoomOut(wxCommandEvent &event);                
    virtual void OnLockAspect(wxCommandEvent &event);             
    virtual void OnMouseHelp(wxCommandEvent &event);              
    virtual void OnMouseLeftDown(wxMouseEvent &event);            
    virtual void OnMouseRightDown(wxMouseEvent &event);           
    virtual void OnMouseMove(wxMouseEvent &event);                
    virtual void OnMouseLeftRelease(wxMouseEvent &event);         
    virtual void OnMouseWheel(wxMouseEvent &event);               
    virtual void OnMouseLeave(wxMouseEvent &event);               
    bool CheckUserMouseAction(wxMouseEvent &event);               
    virtual void OnScrollThumbTrack(wxScrollWinEvent &event);     
    virtual void OnScrollPageUp(wxScrollWinEvent &event);         
    virtual void OnScrollPageDown(wxScrollWinEvent &event);       
    virtual void OnScrollLineUp(wxScrollWinEvent &event);         
    virtual void OnScrollLineDown(wxScrollWinEvent &event);       
    virtual void OnScrollTop(wxScrollWinEvent &event);            
    virtual void OnScrollBottom(wxScrollWinEvent &event);         

    void DoScrollCalc(const int position, const int orientation);

    void DoZoomInXCalc(const int staticXpixel);
    void DoZoomInYCalc(const int staticYpixel);
    void DoZoomOutXCalc(const int staticXpixel);
    void DoZoomOutYCalc(const int staticYpixel);

    void Zoom(bool zoomIn, const wxPoint &centerPoint);

    virtual bool UpdateBBox();

    void InitParameters();

    wxTopLevelWindow* m_parent;
    bool m_fullscreen;

    mpLayerList m_layers;   
    mpScaleX* m_XAxis;      
    mpScaleY* m_YAxis;      
    mpScaleY* m_Y2Axis;     

    wxMenu m_popmenu;       
    bool m_lockaspect;      
    wxColour m_bgColour;    
    wxColour m_fgColour;    
    wxColour m_axColour;    
    bool m_drawBox;         

    mpFloatRect m_bound;    
    double m_scaleX;        
    double m_scaleY;        
    double m_scaleY2;       
    double m_posX;          
    double m_posY;          
    double m_posY2;         
    int m_scrX;             
    int m_scrY;             
    int m_clickedX;         
    int m_clickedY;         

    mpFloatRect m_desired;              

    mpRect m_margin;                    
    wxCoord m_plotWidth;                
    wxCoord m_plotHeight;               

    mpRect m_plotBoundaries;            
    mpRect m_plotBoundariesMargin;      
    wxRect m_PlotArea;                  

    bool m_repainting;
    int m_last_lx, m_last_ly;           
    wxBitmap* m_buff_bmp;               
    bool m_enableDoubleBuffer;          
    bool m_enableMouseNavigation;       
    bool m_mouseMovedAfterRightClick;
    wxPoint m_mouseRClick;              
    wxPoint m_mouseLClick;              
    bool m_enableScrollBars;
    int m_scrollX, m_scrollY;
    mpInfoLayer* m_movingInfoLayer;     
    mpInfoCoords* m_InfoCoords;         
    mpInfoLegend* m_InfoLegend;         
    bool m_InInfoLegend;

    wxBitmap* m_zoom_bmp;               
    wxRect m_zoom_dim;
    wxRect m_zoom_oldDim;

    bool m_magnetize;                   
    mpMagnet m_magnet;                  

    bool m_LogXaxis = false;            
    bool m_LogYaxis = false;            

    wxBitmap* m_Screenshot_bmp;         

#ifdef ENABLE_MP_CONFIG
    MathPlotConfigDialog* m_configWindow = NULL;   
#endif // ENABLE_MP_CONFIG

    mpOnDeleteLayer m_OnDeleteLayer = NULL;          
    mpOnUserMouseAction m_OnUserMouseAction = NULL;  

    virtual void DesiredBoundsHaveChanged() {};

  private:
    int m_countY2Axis = 0;
    void FillI18NString();

    void CheckAndReportDesiredBoundsChanges();
    bool m_initialDesiredBoundsRecorded = false; 
    mpFloatRect m_lastDesiredReportedBounds; 

  wxDECLARE_DYNAMIC_CLASS(mpWindow);
  wxDECLARE_EVENT_TABLE();

    // To have direct access to m_Screenshot_dc
    friend mpPrintout;
};

//-----------------------------------------------------------------------------
// mpText - provided by Val Greene
//-----------------------------------------------------------------------------

class WXDLLIMPEXP_MATHPLOT mpText: public mpLayer
{
  public:
    mpText(const wxString &name = wxEmptyString) : mpLayer(mpLAYER_TEXT)
    {
      m_subtype = mptText;
      SetName(name);
      m_offsetx = 5;
      m_offsety = 50;
      m_location = mpMarginNone;
      m_ZIndex = mpZIndex_TEXT;
    }

    mpText(const wxString &name, int offsetx, int offsety);

    mpText(const wxString &name, mpLocation marginLocation);

    virtual bool HasBBox()
    {
      return false;
    }

    void SetLocation(mpLocation location)
    {
      m_location = location;
    }

    mpLocation GetLocation() const
    {
      return m_location;
    }

    void SetOffset(int offX, int offY)
    {
      m_offsetx = offX;
      m_offsety = offY;
    }

    void GetOffset(int *offX, int *offY) const
    {
      *offX = m_offsetx;
      *offY = m_offsety;
    }

  protected:
    int m_offsetx;  
    int m_offsety;  
    mpLocation m_location;

    virtual void DoPlot(wxDC &dc, mpWindow &w);

  wxDECLARE_DYNAMIC_CLASS(mpText);
};

class WXDLLIMPEXP_MATHPLOT mpTitle: public mpText
{
  public:
    mpTitle();

    mpTitle(const wxString &name) :
        mpText(name, mpMarginTopCenter)
    {
      m_subtype = mptTitle;
      SetPen(*wxWHITE_PEN);
      SetBrush(*wxWHITE_BRUSH);
    }

  protected:

  wxDECLARE_DYNAMIC_CLASS(mpTitle);
};

//-----------------------------------------------------------------------------
// mpPrintout - provided by Davide Rondini
//-----------------------------------------------------------------------------

class WXDLLIMPEXP_MATHPLOT mpPrintout: public wxPrintout
{
  public:
    mpPrintout()
    {
      plotWindow = NULL;
      drawn = false;
      stretch_factor = 2;
    }

    mpPrintout(mpWindow *drawWindow, const wxString &title = _T("wxMathPlot print output"), int factor = 2);
    virtual ~mpPrintout()
    {
      ;
    }

    void SetDrawState(bool drawState)
    {
      drawn = drawState;
    }

    bool OnPrintPage(int page);
    bool HasPage(int page);

    void SetFactor(int factor)
    {
      stretch_factor = factor;
    }

  private:
    bool drawn;
    mpWindow* plotWindow;
    int stretch_factor;  // To reduce the size of plot

  protected:

  wxDECLARE_DYNAMIC_CLASS(mpPrintout);
};

//-----------------------------------------------------------------------------
// mpMovableObject  - provided by Jose Luis Blanco
//-----------------------------------------------------------------------------
class WXDLLIMPEXP_MATHPLOT mpMovableObject: public mpFunction
{
  public:
    mpMovableObject() :
        m_reference_x(0), m_reference_y(0), m_reference_phi(0), m_shape_xs(0), m_shape_ys(0)
    {
      assert(m_type == mpLAYER_PLOT); // m_type is already set to mpLAYER_PLOT in default-arg mpFunction ctor: m_type = mpLAYER_PLOT;
      m_subtype = mpfMovable;
      m_bbox_min_x = m_bbox_max_x = 0;
      m_bbox_min_y = m_bbox_max_y = 0;
    }

    virtual ~mpMovableObject() {}

    void GetCoordinateBase(double &x, double &y, double &phi) const
    {
      x = m_reference_x;
      y = m_reference_y;
      phi = m_reference_phi;
    }

    void SetCoordinateBase(double x, double y, double phi = 0)
    {
      m_reference_x = x;
      m_reference_y = y;
      m_reference_phi = phi;
      m_flags = mpALIGN_NE;
      ShapeUpdated();
    }

    virtual bool HasBBox()
    {
      return m_trans_shape_xs.size() != 0;
    }

    virtual double GetMinX()
    {
      return m_bbox_min_x;
    }

    virtual double GetMaxX()
    {
      return m_bbox_max_x;
    }

    virtual double GetMinY()
    {
      return m_bbox_min_y;
    }

    virtual double GetMaxY()
    {
      return m_bbox_max_y;
    }

  protected:

    double m_reference_x, m_reference_y, m_reference_phi;

    virtual void DoPlot(wxDC &dc, mpWindow &w);

    void TranslatePoint(double x, double y, double &out_x, double &out_y) const;

    std::vector<double> m_shape_xs, m_shape_ys;

    std::vector<double> m_trans_shape_xs, m_trans_shape_ys;

    double m_bbox_min_x, m_bbox_max_x, m_bbox_min_y, m_bbox_max_y;

    void ShapeUpdated();

  wxDECLARE_DYNAMIC_CLASS(mpMovableObject);
};

//-----------------------------------------------------------------------------
// mpCovarianceEllipse  - provided by Jose Luis Blanco
//-----------------------------------------------------------------------------
class WXDLLIMPEXP_MATHPLOT mpCovarianceEllipse: public mpMovableObject
{
  public:
    mpCovarianceEllipse(double cov_00 = 1, double cov_11 = 1, double cov_01 = 0, double quantiles = 2, int segments = 32,
        const wxString &layerName = _T("")) : mpMovableObject(),
        m_cov_00(cov_00), m_cov_11(cov_11), m_cov_01(cov_01), m_quantiles(quantiles), m_segments(segments)
    {
      m_continuous = true;
      m_name = layerName;
      RecalculateShape();
    }

    virtual ~mpCovarianceEllipse()
    {
      ;
    }

    double GetQuantiles() const
    {
      return m_quantiles;
    }

    void SetQuantiles(double q)
    {
      m_quantiles = q;
      RecalculateShape();
    }

    void SetSegments(int segments)
    {
      m_segments = segments;
    }

    int GetSegments() const
    {
      return m_segments;
    }

    void GetCovarianceMatrix(double &cov_00, double &cov_01, double &cov_11) const
    {
      cov_00 = m_cov_00;
      cov_01 = m_cov_01;
      cov_11 = m_cov_11;
    }

    void SetCovarianceMatrix(double cov_00, double cov_01, double cov_11)
    {
      m_cov_00 = cov_00;
      m_cov_01 = cov_01;
      m_cov_11 = cov_11;
      RecalculateShape();
    }

  protected:
    double m_cov_00, m_cov_11, m_cov_01;
    double m_quantiles;

    int m_segments;

    void RecalculateShape();

  wxDECLARE_DYNAMIC_CLASS(mpCovarianceEllipse);
};

//-----------------------------------------------------------------------------
// mpPolygon - provided by Jose Luis Blanco
//-----------------------------------------------------------------------------
class WXDLLIMPEXP_MATHPLOT mpPolygon: public mpMovableObject
{
  public:
    mpPolygon(const wxString &layerName = _T("")) : mpMovableObject()
    {
      m_continuous = true;
      m_name = layerName;
    }

    virtual ~mpPolygon()
    {
      ;
    }

    void setPoints(const std::vector<double> &points_xs, const std::vector<double> &points_ys, bool closedShape = true);

  protected:

  wxDECLARE_DYNAMIC_CLASS(mpPolygon);
};

//-----------------------------------------------------------------------------
// mpBitmapLayer - provided by Jose Luis Blanco
//-----------------------------------------------------------------------------
class WXDLLIMPEXP_MATHPLOT mpBitmapLayer: public mpLayer
{
  public:
    mpBitmapLayer() : mpLayer(mpLAYER_BITMAP)
    {
      m_min_x = m_max_x = 0;
      m_min_y = m_max_y = 0;
      m_validImg = false;
      m_bitmapChanged = false;
      m_scaledBitmap_offset_x = m_scaledBitmap_offset_y = 0;
    }

    virtual ~mpBitmapLayer()
    {
      ;
    }

    void GetBitmapCopy(wxImage &outBmp) const;

    void SetBitmap(const wxImage &inBmp, double x, double y, double lx, double ly);

    virtual double GetMinX()
    {
      return m_min_x;
    }

    virtual double GetMaxX()
    {
      return m_max_x;
    }

    virtual double GetMinY()
    {
      return m_min_y;
    }

    virtual double GetMaxY()
    {
      return m_max_y;
    }

  protected:

    wxImage m_bitmap;
    wxBitmap m_scaledBitmap;
    wxCoord m_scaledBitmap_offset_x, m_scaledBitmap_offset_y;
    bool m_validImg;
    bool m_bitmapChanged;

    double m_min_x, m_max_x, m_min_y, m_max_y;

    virtual void DoPlot(wxDC &dc, mpWindow &w);

  wxDECLARE_DYNAMIC_CLASS(mpBitmapLayer);
};

// utility class

// Enumeration of classic colour
typedef enum __mp_Colour
{
  mpBlue,
  mpRed,
  mpGreen,
  mpPurple,
  mpYellow,
  mpFuchsia,
  mpLime,
  mpAqua,
  mpOlive
} mpColour;

class WXDLLIMPEXP_MATHPLOT wxIndexColour: public wxColour
{
  public:
    wxIndexColour(unsigned int id)
    {
      switch (id)
      {
        case 0:
          this->Set(0, 0, 255);
          break;  // Blue
        case 1:
          this->Set(255, 0, 0);
          break;  // Red
        case 2:
          this->Set(0, 128, 0);
          break;  // Green
        case 3:
          this->Set(128, 0, 128);
          break;  // Purple
        case 4:
          this->Set(255, 255, 0);
          break;  // Yellow
        case 5:
          this->Set(255, 0, 255);
          break;  // Fuchsia
        case 6:
          this->Set(0, 255, 0);
          break;  // Lime
        case 7:
          this->Set(0, 255, 255);
          break;  // Aqua/Cyan
        case 8:
          this->Set(128, 128, 0);
          break;  // Olive
        default:
          this->Set((ChannelType)((rand() * 255) / RAND_MAX), (ChannelType)((rand() * 255) / RAND_MAX),
              (ChannelType)((rand() * 255) / RAND_MAX));
      }
    }
};

// ---------------------------------------------------------------------
#ifdef ENABLE_MP_NAMESPACE
}// namespace MathPlot
using namespace MathPlot;
#endif // ENABLE_MP_NAMESPACE

#endif // _MP_MATHPLOT_H_