// SPDX-License-Identifier: LGPL-3.0-or-other
// Copyright (C) 2021 Contributors to the SLS Detector Package
#ifndef SLSQT1DPLOT_H
#define SLSQT1DPLOT_H

#include "SlsQt1DZoomer.h"
#include "sls/ansi.h"
#include <qwt_plot.h>
#include <qwt_plot_curve.h>
#include <qwt_plot_marker.h>
#include <qwt_scale_div.h>
#include <qwt_plot_shapeitem.h>

class QPen;
class SlsQt1DPlot;
class QwtSymbol;

class SlsQtH1D : public QwtPlotCurve {

  public:
    SlsQtH1D(QString title, int n, double xmin, double xmax, double *data = 0);
    SlsQtH1D(QString title, int n, double *data_x, double *data_y);
    ~SlsQtH1D();

    void Attach(SlsQt1DPlot *p);
    void Detach(SlsQt1DPlot *p);

    int SetLineColor(int c = -1);
    int SetLineWidth(int w = 1);
    void SetLineStyle(int s = 0);
    void setStyleLinesorDots(bool isLines);
    void setSymbolMarkers(bool isMarker);

    void SetData(int n, double xmin, double xmax, double *d = 0);
    void SetData(int n, double *dx, double *dy);

    double *GetX() { return x; }
    double *GetY() { return y; }
    int GetNBinsX() { return ndata; }

    double FillBin(int bx, double v = 1);
    double Fill(double x, double v = 1);
    double SetBinContent(int bx, double v);
    double SetContent(double x, double v);
    int FindBinIndex(double px);

    double GetXMin() { return x[0]; }
    double GetFirstXgtZero() { return firstXgt0; }
    double GetXMax() { return x[ndata - 1]; }
    double GetYMin() { return ymin; }
    double GetFirstYgtZero() { return firstYgt0; }
    double GetYMax() { return ymax; }

    SlsQtH1D *Add(double v);

  private:
    int ndata;
    int n_array;
    double dx;
    double *x{nullptr}, *y{nullptr};
    double ymin, ymax;
    double firstXgt0, firstYgt0;
    void Initailize();
    int SetUpArrays(int n);
    int CheckIndex(int bx);

    QPen *pen_ptr{nullptr};
};

class SlsQtH1DList {
  public:
    SlsQtH1DList(SlsQtH1D *hist = 0);
    ~SlsQtH1DList();

    SlsQtH1D *Add(SlsQtH1D *h);
    void Remove(SlsQtH1D *h);
    void Print();

    SlsQtH1D *Hist() { return the_hist; } // if no hist returns 0
    SlsQtH1DList *Next() { return the_next; }

  private:
    SlsQtH1DList *the_next;
    SlsQtH1D *the_hist;
};

class SlsQt1DPlot : public QwtPlot {
    Q_OBJECT

  public:
    SlsQt1DPlot(QWidget * = NULL);
    ~SlsQt1DPlot();

    void SetTitle(QString title);
    void SetXTitle(QString title);
    void SetYTitle(QString title);
    void SetTitleFont(const QFont &f);
    void SetXFont(const QFont &f);
    void SetYFont(const QFont &f);

    void InsertHLine(double y);
    void RemoveHLine();
    void InsertVLine(double v);
    void RemoveVLine();

    /**	This group of functions have been added by Dhanya on 19.06.2012 to be
       able to use zooming functionality without mouse control*/
    void DisableZoom(bool disable);
    void EnableXAutoScaling() {
        setAxisAutoScale(QwtPlot::xBottom, true);
        Update();
    };
    void EnableYAutoScaling() {
        setAxisAutoScale(QwtPlot::yLeft, true);
        Update();
    };
    void SetYStep(int step) { ystep = step; };
    void SetXMinMax(double min, double max) {
        setAxisScale(QwtPlot::xBottom, min, max);
    };
    void SetYMinMax(double min, double max) {
        setAxisScale(QwtPlot::yLeft, min, max);
    };
    double GetXMinimum() { return hist_list->Hist()->GetXMin(); };
    double GetXMaximum() { return hist_list->Hist()->GetXMax(); };
    double GetYMinimum() { return hist_list->Hist()->GetYMin(); };
    double GetYMaximum() { return hist_list->Hist()->GetYMax(); };
    /**---*/

    void SetZoom(double xmin, double ymin, double x_width, double y_width);
    void SetZoomBase(double xmin, double ymin, double x_width, double y_width) {
        zoomer->SetZoomBase(xmin, ymin, x_width, y_width);
    }

    void alignScales();

    void SetLogX(bool yes = 1);
    void SetLogY(bool yes = 1);

    void EnableRoiBox(std::array<int, 4> roi);  
    void DisableRoiBox();

  private:
    SlsQtH1DList *hist_list{nullptr};
    SlsQt1DZoomer *zoomer{nullptr};
    QwtPlotPanner *panner{nullptr};

    QwtPlotMarker *hline{nullptr};
    QwtPlotMarker *vline{nullptr};
    bool disableZoom{false};
    int ystep{0};

    void SetupZoom();
    void UnknownStuff();
    // void alignScales();

    void CalculateNResetZoomBase();
    void NewHistogramAttached(SlsQtH1D *h);
    void HistogramDetached(SlsQtH1D *h);

    void SetLog(int axisId, bool yes);

    friend void SlsQtH1D::Attach(SlsQt1DPlot *p);
    friend void SlsQtH1D::Detach(SlsQt1DPlot *p);

    QwtPlotShapeItem *roiBox{nullptr};

  public slots:
    void UnZoom();
    void Update();
};

#endif