KDChartRingDiagram.h

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00001 /* -*- Mode: C++ -*-
00002    KDChart - a multi-platform charting engine
00003    */
00004 
00005 /****************************************************************************
00006  ** Copyright (C) 2005-2007 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 
00040 class KDCHART_EXPORT RingDiagram : public AbstractPieDiagram
00041 {
00042     Q_OBJECT
00043 
00044     Q_DISABLE_COPY( RingDiagram )
00045     KDCHART_DECLARE_DERIVED_DIAGRAM( RingDiagram, PolarCoordinatePlane )
00046 
00047 public:
00048     explicit RingDiagram(
00049         QWidget* parent = 0, PolarCoordinatePlane* plane = 0 );
00050     virtual ~RingDiagram();
00051 
00052 protected:
00053     // Implement AbstractDiagram
00055     virtual void paint ( PaintContext* paintContext );
00056 public:
00058     virtual void resize ( const QSizeF& area );
00059 
00060     // Implement AbstractPolarDiagram
00062     virtual double valueTotals () const;
00064     virtual double numberOfValuesPerDataset() const;
00066     virtual double numberOfGridRings() const;
00067 
00068     virtual RingDiagram * clone() const;
00069 
00070     void setRelativeThickness( bool relativeThickness );
00071     bool relativeThickness() const;
00072 protected:
00074     virtual const QPair<QPointF, QPointF> calculateDataBoundaries() const;
00075     void paintEvent( QPaintEvent* );
00076     void resizeEvent( QResizeEvent* );
00077 
00078 }; // End of class RingDiagram
00079 
00080 }
00081 
00082 #endif // KDCHARTRINGDIAGRAM_H

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