/*
 * SPDX-FileCopyrightText: 2001-2015 Klaralvdalens Datakonsult AB. All rights reserved.
 *
 * This file is part of the KD Chart library.
 *
 * SPDX-License-Identifier: GPL-2.0-or-later
 */

#ifndef KCHARTRADARDIAGRAM_H
#define KCHARTRADARDIAGRAM_H

#include "KChartPolarDiagram.h"
#include "KChartPosition.h"
#include "KChartRadarCoordinatePlane.h"

QT_BEGIN_NAMESPACE
class QPolygonF;
QT_END_NAMESPACE

namespace KChart
{

/**
 * @brief RadarDiagram defines a common radar diagram
 */
class KCHART_EXPORT RadarDiagram : public AbstractPolarDiagram
{
    Q_OBJECT

    Q_DISABLE_COPY(RadarDiagram)
    KCHART_DECLARE_DERIVED_DIAGRAM(RadarDiagram, RadarCoordinatePlane)

public:
    explicit RadarDiagram(QWidget *parent = nullptr, RadarCoordinatePlane *plane = nullptr);
    ~RadarDiagram() override;

    virtual void paint(PaintContext *paintContext, bool calculateListAndReturnScale, qreal &newZoomX, qreal &newZoomY);
    /** \reimpl */
    void resize(const QSizeF &area) override;

    /** \reimpl */
    qreal valueTotals() const override;
    /** \reimpl */
    qreal numberOfValuesPerDataset() const override;
    /** \reimpl */
    qreal numberOfGridRings() const override;

    /**
     * if val is true the diagram will mirror the diagram datapoints
     */
    void setReverseData(bool val);
    bool reverseData();

    /**
     * Creates an exact copy of this diagram.
     */
    virtual RadarDiagram *clone() const;

    /**
     * Close each of the data series by connecting the last point to its
     * respective start point
     */
    void setCloseDatasets(bool closeDatasets);
    bool closeDatasets() const;

    /**
     * Fill the areas of the radar chart with there respective color defined
     * via KChart::DatasetBrushRole. The value defines the alpha of the
     * color to use. If set to 0.0 (the default) then the radar areas will
     * not be filled with any color. If set to 1.0 then the areas will be
     * solid filled and are not transparent.
     */
    qreal fillAlpha() const;
    void setFillAlpha(qreal alphaF);

protected:
    /** \reimpl */
    const QPair<QPointF, QPointF> calculateDataBoundaries() const override;
    void paintEvent(QPaintEvent *) override;
    void resizeEvent(QResizeEvent *) override;
    void paint(PaintContext *paintContext) override;

}; // End of class RadarDiagram

}

#endif // KCHARTRADARDIAGRAM_H
