KDChartPolarDiagram.h

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/****************************************************************************
** Copyright (C) 2001-2020 Klaralvdalens Datakonsult AB.  All rights reserved.
**
** This file is part of the KD Chart library.
**
** Licensees holding valid commercial KD Chart licenses may use this file in
** accordance with the KD Chart Commercial License Agreement provided with
** the Software.
**
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 and version 3 as published by the
** Free Software Foundation and appearing in the file LICENSE.GPL.txt included.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** Contact info@kdab.com if any conditions of this licensing are not
** clear to you.
**
**********************************************************************/

#ifndef KDCHARTPOLARDIAGRAM_H
#define KDCHARTPOLARDIAGRAM_H


#include "KDChartPosition.h"
#include "KDChartAbstractPolarDiagram.h"

QT_BEGIN_NAMESPACE
class QPolygonF;
QT_END_NAMESPACE

namespace KDChart {

class KDCHART_EXPORT PolarDiagram : public AbstractPolarDiagram
{
    Q_OBJECT

    Q_DISABLE_COPY( PolarDiagram )
    KDCHART_DECLARE_DERIVED_DIAGRAM( PolarDiagram, PolarCoordinatePlane )

public:
    explicit PolarDiagram(
        QWidget* parent = 0, PolarCoordinatePlane* plane = 0 );
    ~PolarDiagram() override;

protected:
    // Implement AbstractDiagram
    void paint ( PaintContext* paintContext ) override;

public:
    void resize ( const QSizeF& area ) override;

    // Implement AbstractPolarDiagram
    qreal valueTotals () const override;
    qreal numberOfValuesPerDataset() const override;
    qreal numberOfGridRings() const override;

    virtual PolarDiagram * clone() const;

    void setZeroDegreePosition( int degrees );
    int zeroDegreePosition() const;

    void setRotateCircularLabels( bool rotateCircularLabels );
    bool rotateCircularLabels() const;

    void setCloseDatasets( bool closeDatasets );
    bool closeDatasets() const;

    void setShowDelimitersAtPosition( Position position,
                                      bool showDelimiters );
    void setShowLabelsAtPosition( Position position,
                                  bool showLabels );

    bool showDelimitersAtPosition( Position position ) const;

    bool showLabelsAtPosition( Position position ) const;

    virtual void paint ( PaintContext* paintContext,
                         bool calculateListAndReturnScale,
                         qreal& newZoomX, qreal& newZoomY ); // KDChart 3: references -> pointers

protected:
    const QPair<QPointF, QPointF> calculateDataBoundaries() const override;
    void paintEvent ( QPaintEvent* ) override;
    void resizeEvent ( QResizeEvent* ) override;
    virtual void paintPolarMarkers( PaintContext* ctx, const QPolygonF& polygon );

}; // End of class PolarDiagram

}


#endif // KDCHARTPOLARDIAGRAM_H