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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

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