/////////////////////////////////////////////////////////////////////////////////
//
//  Copyright (C) 2011-     Statoil ASA
//  Copyright (C) 2013-     Ceetron Solutions AS
//  Copyright (C) 2011-2012 Ceetron AS
//
//  ResInsight is free software: you can redistribute it and/or modify
//  it under the terms of the GNU General Public License as published by
//  the Free Software Foundation, either version 3 of the License, or
//  (at your option) any later version.
//
//  ResInsight is distributed in the hope that it will be useful, but WITHOUT ANY
//  WARRANTY; without even the implied warranty of MERCHANTABILITY or
//  FITNESS FOR A PARTICULAR PURPOSE.
//
//  See the GNU General Public License at <http://www.gnu.org/licenses/gpl.html>
//  for more details.
//
/////////////////////////////////////////////////////////////////////////////////

#pragma once

#include <QWidget>

class QPaintEvent;
class QString;
class QStringList;

class RiuGridStatisticsHistogramWidget : public QWidget
{
public:
    RiuGridStatisticsHistogramWidget( QWidget* parent = nullptr, Qt::WindowFlags f = Qt::WindowFlags() );

    void setHistogramData( double min, double max, const std::vector<size_t>& histogram );
    void setPercentiles( double pmin, double pmax );
    void setMean( double mean ) { m_mean = mean; }

protected:
    void paintEvent( QPaintEvent* event ) override;

private:
    void draw( QPainter* painter, int x, int y, int width, int height );

    int xPosFromColIdx( size_t colIdx );
    int yPosFromCount( size_t colHeight );

    int xPosFromDomainValue( double value );

    std::vector<size_t> m_histogramData;
    double              m_max;
    double              m_min;
    double              m_minPercentile;
    double              m_maxPercentile;
    double              m_mean;
    size_t              m_maxHistogramCount;

    double m_width;
    double m_height;
    double m_x;
    double m_y;
};