/* Copyright (C) 2019
 * swift project Community / Contributors
 *
 * This file is part of swift project. It is subject to the license terms in the LICENSE file found in the top-level
 * directory of this distribution. No part of swift project, including this file, may be copied, modified, propagated,
 * or distributed except according to the terms contained in the LICENSE file.
 */

//! \file

#ifndef BLACKGUI_GRAPH_BARCHART_H
#define BLACKGUI_GRAPH_BARCHART_H

#include "blackgui/blackguiexport.h"

#include <qwt_plot.h>
#include <qwt_scale_draw.h>
#include <qwt_plot_multi_barchart.h>

#include <QScopedPointer>
#include <QStringList>
#include <QList>

namespace BlackGui
{
    namespace Graphs
    {
        /**
         * For axis labels
         */
        class CTextScaleDraw: public QwtScaleDraw
        {
        public:
            //! Constructorxs
            CTextScaleDraw(const QStringList &texts);

            //! Value to label
            virtual QwtText label(double v) const override;

            //! Labels
            void setLabels(const QStringList &labels) { m_labels = labels; }

            //! Any labels?
            bool hasLabels() const { return !m_labels.isEmpty(); }

        private:
            QStringList m_labels;
        };

        /**
         * Bar chart, modified version of QWT examples
         */
        class BLACKGUI_EXPORT CBarChart: public QwtPlot
        {
        public:
            //! Constructor
            CBarChart(QWidget * = nullptr);

            //! Style
            void setStyle(QwtPlotMultiBarChart::ChartStyle style);

            //! Set number of symbols
            void setSymbols(const QString &title, const QString &color);

            //! Set number of symbols
            void setSymbols(const QStringList &titles, const QStringList &colors);

            //! Samples with 1 bar per sample
            void setSamples1Bar(const QList<double> &samples, const QStringList &labels, Qt::Orientation orientation);

        private:
            //! Orientation
            void setOrientation(Qt::Orientation, const QStringList &labels);

            QScopedPointer<QwtPlotMultiBarChart> m_barChartItem;
        };
    } // ns
} // ns

#endif