# KDChartRingDiagram.h

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    00001 /* -*- Mode: C++ -*-
    00002    KDChart - a multi-platform charting engine
    00003    */
    00004
    00005 /****************************************************************************
    00006  ** Copyright (C) 2005-2006 Klarälvdalens Datakonsult AB.  All rights reserved.
    00007  **
    00008  ** This file is part of the KD Chart library.
    00009  **
    00010  ** This file may be distributed and/or modified under the terms of the
    00011  ** GNU General Public License version 2 as published by the Free Software
    00012  ** Foundation and appearing in the file LICENSE.GPL included in the
    00013  ** packaging of this file.
    00014  **
    00015  ** Licensees holding valid commercial KD Chart licenses may use this file in
    00016  ** accordance with the KD Chart Commercial License Agreement provided with
    00017  ** the Software.
    00018  **
    00019  ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
    00020  ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
    00021  **
    00022  ** See http://www.kdab.net/kdchart for
    00023  **   information about KD Chart Commercial License Agreements.
    00024  **
    00025  ** Contact info@kdab.net if any conditions of this
    00026  ** licensing are not clear to you.
    00027  **
    00028  **********************************************************************/
    00029
    00030 #ifndef KDCHARTRINGDIAGRAM_H
    00031 #define KDCHARTRINGDIAGRAM_H
    00032
    00033 #include "KDChartAbstractPieDiagram.h"
    00034
    00035 namespace KDChart {
    00036
    00037 class KDCHART_EXPORT RingDiagram : public AbstractPieDiagram
    00038 {
    00039     Q_OBJECT
    00040
    00041     Q_DISABLE_COPY( RingDiagram )
    00042     KDCHART_DECLARE_DERIVED_DIAGRAM( RingDiagram, PolarCoordinatePlane )
    00043
    00044 public:
    00045     explicit RingDiagram(
    00046         QWidget* parent = 0, PolarCoordinatePlane* plane = 0 );
    00047     virtual ~RingDiagram();
    00048
    00049 protected:
    00050     // Implement AbstractDiagram
    00052     virtual void paint ( PaintContext* paintContext );
    00053 public:
    00055     virtual void resize ( const QSizeF& area );
    00056
    00057     // Implement AbstractPolarDiagram
    00059     virtual double valueTotals () const;
    00061     virtual double numberOfValuesPerDataset() const;
    00063     virtual double numberOfGridRings() const;
    00064
    00065     virtual RingDiagram * clone() const;
    00066
    00067     void setRelativeThickness( bool relativeThickness );
    00068     bool relativeThickness() const;
    00069 protected:
    00071     virtual const QPair<QPointF, QPointF> calculateDataBoundaries() const;
    00072     void paintEvent( QPaintEvent* );
    00073     void resizeEvent( QResizeEvent* );
    00074
    00075 }; // End of class RingDiagram
    00076
    00077 }
    00078
    00079 #endif // KDCHARTRINGDIAGRAM_H