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             piepresenter.h
        
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      #ifndef PIEPRESENTER_H

      #define PIEPRESENTER_H

      #include "chartitem_p.h"

      #include "qpieseries.h"

      #include <QSignalMapper>

      class QGraphicsItem;

      QTCOMMERCIALCHART_BEGIN_NAMESPACE

      class PieSlice;

      class PiePresenter : public QObject, public ChartItem

      {

          Q_OBJECT

      public:

          // TODO: use a generic data class instead of x and y

          PiePresenter(QGraphicsItem *parent, QPieSeries *series);

          ~PiePresenter();

      public: // from QGraphicsItem

          QRectF boundingRect() const { return m_rect; }

          void paint(QPainter *, const QStyleOptionGraphicsItem *, QWidget *);

      public:

          QRectF pieRect() const { return m_pieRect; }

      public Q_SLOTS:

          void handleSeriesChanged(const QPieSeries::ChangeSet& changeSet);

          void handleDomainChanged(const Domain& domain);

          void handleGeometryChanged(const QRectF& rect);

          void updateGeometry();

      private:

          void addSlice(QPieSlice* sliceData);

          void deleteSlice(QPieSlice* sliceData);

      private:

          friend class PieSlice;

          QHash<QPieSlice*, PieSlice*> m_slices;

          QPieSeries *m_series;

          QRectF m_rect;

          QRectF m_pieRect;

      };

      QTCOMMERCIALCHART_END_NAMESPACE

      #endif // PIEPRESENTER_H

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				#ifndef PIEPRESENTER_H
				#define PIEPRESENTER_H

				#include "chartitem_p.h"
				#include "qpieseries.h"
				#include <QSignalMapper>

				class QGraphicsItem;
				QTCOMMERCIALCHART_BEGIN_NAMESPACE
				class PieSlice;

				class PiePresenter : public QObject, public ChartItem
				{
				Q_OBJECT

				public:
				// TODO: use a generic data class instead of x and y
				PiePresenter(QGraphicsItem parent, QPieSeries series);
				~PiePresenter();

				public: // from QGraphicsItem
				QRectF boundingRect() const { return m_rect; }
				void paint(QPainter , const QStyleOptionGraphicsItem , QWidget *);

				public:
				QRectF pieRect() const { return m_pieRect; }

				public Q_SLOTS:
				void handleSeriesChanged(const QPieSeries::ChangeSet& changeSet);
				void handleDomainChanged(const Domain& domain);
				void handleGeometryChanged(const QRectF& rect);
				void updateGeometry();

				private:
				void addSlice(QPieSlice* sliceData);
				void deleteSlice(QPieSlice* sliceData);

				private:
				friend class PieSlice;
				QHash<QPieSlice, PieSlice> m_slices;
				QPieSeries *m_series;
				QRectF m_rect;
				QRectF m_pieRect;
				};

				QTCOMMERCIALCHART_END_NAMESPACE

				#endif // PIEPRESENTER_H