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/****************************************************************************
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**
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** Copyright (C) 2012 Digia Plc
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** All rights reserved.
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** For any questions to Digia, please use contact form at http://qt.digia.com
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**
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** This file is part of the Qt Commercial Charts Add-on.
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**
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** $QT_BEGIN_LICENSE$
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** Licensees holding valid Qt Commercial licenses may use this file in
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** accordance with the Qt Commercial License Agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Digia.
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**
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** If you have questions regarding the use of this file, please use
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** contact form at http://qt.digia.com
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef PIECHARTITEM_H
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#define PIECHARTITEM_H
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#include "qpieseries.h"
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#include "chartitem_p.h"
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#include "piesliceitem_p.h"
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class QGraphicsItem;
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QTCOMMERCIALCHART_BEGIN_NAMESPACE
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class QPieSlice;
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class ChartPresenter;
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typedef QHash<QPieSlice*, PieSliceData> PieLayout;
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class PieChartItem : public ChartItem
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{
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Q_OBJECT
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public:
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// TODO: use a generic data class instead of x and y
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PieChartItem(QPieSeries *series, ChartPresenter *presenter);
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~PieChartItem();
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public: // from QGraphicsItem
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QRectF boundingRect() const { return m_rect; }
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void paint(QPainter *, const QStyleOptionGraphicsItem *, QWidget *);
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public Q_SLOTS:
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void initialize();
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void handleSlicesAdded(QList<QPieSlice*> slices);
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void handleSlicesRemoved(QList<QPieSlice*> slices);
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void handlePieLayoutChanged();
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void handleSliceChanged();
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void handleDomainChanged(qreal, qreal, qreal, qreal);
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void handleGeometryChanged(const QRectF& rect);
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public:
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void calculatePieLayout();
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PieSliceData sliceData(QPieSlice *slice);
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PieLayout calculateLayout();
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void applyLayout(const PieLayout &layout);
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void updateLayout(QPieSlice *slice, const PieSliceData &sliceData);
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void setLayout(const PieLayout &layout);
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void setLayout(QPieSlice *slice, const PieSliceData &sliceData);
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void destroySlice(QPieSlice *slice);
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private:
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friend class PieSliceItem;
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QHash<QPieSlice*, PieSliceItem*> m_slices;
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QPieSeries *m_series;
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QRectF m_rect;
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QPointF m_pieCenter;
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qreal m_pieRadius;
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};
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QTCOMMERCIALCHART_END_NAMESPACE
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#endif // PIECHARTITEM_H
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