KDChartPolarDiagram.h

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/* -*- Mode: C++ -*-
   KDChart - a multi-platform charting engine
   */

/****************************************************************************
 ** Copyright (C) 2005-2007 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 KD Chart Commercial License Agreements.
 **
 ** Contact info@kdab.net if any conditions of this
 ** licensing are not clear to you.
 **
 **********************************************************************/

#ifndef KDCHARTPOLARDIAGRAM_H
#define KDCHARTPOLARDIAGRAM_H


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


class QPolygonF;


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 );
    virtual ~PolarDiagram();

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

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

    // Implement AbstractPolarDiagram
    virtual double valueTotals () const;
    virtual double numberOfValuesPerDataset() const;
    virtual double numberOfGridRings() const;

    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 );

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

}; // End of class PolarDiagram

}


#endif // KDCHARTPOLARDIAGRAM_H

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