117 lines
3.6 KiB
C
117 lines
3.6 KiB
C
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/****************************************************************************
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** Copyright (C) 2001-2011 Klaralvdalens Datakonsult AB. All rights reserved.
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**
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** This file is part of the KD Chart library.
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**
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** Licensees holding valid commercial KD Chart licenses may use this file in
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** accordance with the KD Chart Commercial License Agreement provided with
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** the Software.
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**
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**
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** This file may be distributed and/or modified under the terms of the
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** GNU General Public License version 2 and version 3 as published by the
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** Free Software Foundation and appearing in the file LICENSE.GPL.txt included.
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**
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** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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**
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** Contact info@kdab.com if any conditions of this licensing are not
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** clear to you.
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**
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**********************************************************************/
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#ifndef KDCHARTPIEDIAGRAM_H
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#define KDCHARTPIEDIAGRAM_H
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#include "KDChartAbstractPieDiagram.h"
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namespace KDChart {
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class DataValueTextInfo;
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typedef class QVector<DataValueTextInfo> DataValueTextInfoList;
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/**
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* @brief PieDiagram defines a common pie diagram
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*/
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class KDCHART_EXPORT PieDiagram : public AbstractPieDiagram
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{
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Q_OBJECT
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Q_DISABLE_COPY( PieDiagram )
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KDCHART_DECLARE_DERIVED_DIAGRAM( PieDiagram, PolarCoordinatePlane )
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public:
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explicit PieDiagram(
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QWidget* parent = 0, PolarCoordinatePlane* plane = 0 );
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virtual ~PieDiagram();
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protected:
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// Implement AbstractDiagram
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/** \reimpl */
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virtual void paint ( PaintContext* paintContext );
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void paintInternal(PaintContext* paintContext, QRectF& textBoundingRect);
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public:
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/** \reimpl */
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virtual void resize ( const QSizeF& area );
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// Implement AbstractPolarDiagram
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/** \reimpl */
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virtual double valueTotals () const;
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/** \reimpl */
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virtual double numberOfValuesPerDataset() const;
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/** \reimpl */
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virtual double numberOfGridRings() const;
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virtual PieDiagram * clone() const;
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protected:
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/** \reimpl */
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virtual const QPair<QPointF, QPointF> calculateDataBoundaries() const;
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void paintEvent( QPaintEvent* );
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void resizeEvent( QResizeEvent* );
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private:
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QRectF piePosition( uint dataset, uint pie ) const;
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void drawOnePie( QPainter* painter,
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DataValueTextInfoList* list,
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uint dataset, uint pie,
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qreal granularity,
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qreal threeDPieHeight );
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void drawPieSurface( QPainter* painter,
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DataValueTextInfoList* list,
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uint dataset, uint pie,
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qreal granularity );
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void draw3DEffect( QPainter* painter,
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const QRectF& drawPosition,
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uint dataset, uint pie,
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qreal granularity,
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const ThreeDPieAttributes& threeDAttrs,
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bool /*explode*/ );
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void drawStraightEffectSegment( QPainter* painter,
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const QRectF& rect,
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qreal threeDHeight,
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qreal angle );
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void drawUpperBrinkEffect( QPainter* painter,
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const QRectF& rect,
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qreal angle );
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void drawArcEffectSegment( QPainter* painter,
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const QRectF& rect,
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qreal threeDHeight,
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qreal startAngle,
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qreal endAngle,
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qreal granularity );
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void drawArcUpperBrinkEffectSegment( QPainter* painter,
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const QRectF& rect,
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qreal startAngle,
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qreal endAngle,
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qreal granularity );
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uint findPieAt( qreal angle, int columnCount );
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uint findLeftPie( uint pie, int columnCount );
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uint findRightPie( uint pie, int columnCount );
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QPointF pointOnCircle( const QRectF& rect, qreal angle );
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}; // End of class KDChartPieDiagram
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}
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#endif // KDCHARTPIEDIAGRAM_H
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