KDChartPolarCoordinatePlane.h

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/****************************************************************************
 ** Copyright (C) 2007 Klarälvdalens Datakonsult AB.  All rights reserved.
 **
 ** This file is part of the KD Chart library.
 **
 ** This file may be distributed and/or modified under the terms of the
 ** GNU General Public License version 2 as published by the Free Software
 ** Foundation and appearing in the file LICENSE.GPL included in the
 ** packaging of this file.
 **
 ** 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 is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
 ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 **
 ** See http://www.kdab.net/kdchart for
 **   information about KDChart Commercial License Agreements.
 **
 ** Contact info@kdab.net if any conditions of this
 ** licensing are not clear to you.
 **
 **********************************************************************/

#ifndef KDCHART_POLAR_COORDINATEPLANE_H
#define KDCHART_POLAR_COORDINATEPLANE_H

#include "KDChartAbstractCoordinatePlane.h"

namespace KDChart {

    class Chart;
    class PaintContext;

    class KDCHART_EXPORT PolarCoordinatePlane : public AbstractCoordinatePlane
    {
        Q_OBJECT

        Q_DISABLE_COPY( PolarCoordinatePlane )
        KDCHART_DECLARE_PRIVATE_DERIVED_PARENT( PolarCoordinatePlane, Chart* )

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

        explicit PolarCoordinatePlane ( Chart* parent = 0 );
        ~PolarCoordinatePlane();

        void addDiagram ( AbstractDiagram* diagram );

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

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

        virtual double zoomFactorX() const;
        virtual double zoomFactorY() const;

        virtual void setZoomFactors( double factorX, double factorY );
        virtual void setZoomFactorX( double factor );
        virtual void setZoomFactorY( double factor );

        virtual QPointF zoomCenter() const;

        virtual void setZoomCenter( const QPointF& center );

        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;

        virtual void paint( QPainter* );

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

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

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

}

#endif

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