KChartPolarCoordinatePlane.h

/*
 * Copyright (C) 2001-2015 Klaralvdalens Datakonsult AB.  All rights reserved.
 *
 * This file is part of the KD Chart library.
 *
 * This program 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 2 of
 * the License, or (at your option) any later version.
 *
 * This program 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 for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

#ifndef KCHART_POLAR_COORDINATEPLANE_H
#define KCHART_POLAR_COORDINATEPLANE_H

#include "KChartAbstractCoordinatePlane.h"

namespace KChart {

    class Chart;
    class PaintContext;

    class KCHART_EXPORT PolarCoordinatePlane : public AbstractCoordinatePlane
    {
        Q_OBJECT

        Q_DISABLE_COPY( PolarCoordinatePlane )
        KCHART_DECLARE_PRIVATE_DERIVED_PARENT( PolarCoordinatePlane, Chart* )

    public:
        struct CoordinateTransformation;
        typedef QList<CoordinateTransformation> CoordinateTransformationList;

        explicit PolarCoordinatePlane ( Chart* parent = nullptr );
        ~PolarCoordinatePlane();

        void addDiagram ( AbstractDiagram* diagram ) override;

        const QPointF translate ( const QPointF& diagramPoint ) const override;
        const QPointF translatePolar ( const QPointF& diagramPoint ) const;

        void setStartPosition( qreal degrees );
        qreal startPosition() const;

        qreal zoomFactorX() const override;
        qreal zoomFactorY() const override;

        void setZoomFactors( qreal factorX, qreal factorY ) override;
        void setZoomFactorX( qreal factor ) override;
        void setZoomFactorY( qreal factor ) override;

        QPointF zoomCenter() const override;

        void setZoomCenter( const QPointF& center ) override;

        void setGridAttributes( bool circular, const GridAttributes & );

        void resetGridAttributes( bool circular );

        const GridAttributes gridAttributes( bool circular ) const;

        bool hasOwnGridAttributes( bool circular ) const;

        qreal angleUnit() const;
        qreal radiusUnit() const;

        void paint( QPainter* ) override;

    protected:
        DataDimensionsList getDataDimensionsList() const override;
        void paintEvent ( QPaintEvent* );
        void resizeEvent ( QResizeEvent* );

        void layoutDiagrams() override;
    protected Q_SLOTS:
        void slotLayoutChanged( AbstractDiagram* diagram );
        void adjustZoomAndRepaint();

    private:
        void setHasOwnGridAttributes( bool circular, bool on );
    };

}

#endif