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             qpieslice.h
        
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      #ifndef QPIESLICE_H

      #define QPIESLICE_H

      #include <qchartglobal.h>

      #include <QObject>

      #include <QPen>

      #include <QBrush>

      #include <QFont>

      QTCOMMERCIALCHART_BEGIN_NAMESPACE

      class QTCOMMERCIALCHART_EXPORT QPieSlice : public QObject

      {

          Q_OBJECT

          Q_PROPERTY(QString label READ label WRITE setLabel /*NOTIFY dataYChanged*/)

          Q_PROPERTY(qreal value READ value WRITE setValue /*NOTIFY dataXChanged*/)

      public:

          QPieSlice(QObject *parent = 0);

          QPieSlice(qreal value, QString label, bool labelVisible = true, QObject *parent = 0);

          virtual ~QPieSlice();

          // data

          qreal value() const;

          QString label() const;

          bool isLabelVisible() const;

          bool isExploded() const;

          // generated data

          qreal percentage() const;

          qreal angle() const;

          qreal span() const;

          // customization

          QPen pen() const;

          QBrush brush() const;

          QPen labelPen() const;

          QFont labelFont() const;

          qreal labelArmLenght() const;

      Q_SIGNALS:

          void clicked();

          void hoverEnter();

          void hoverLeave();

          void changed();

      public Q_SLOTS:

          // data

          void setLabel(QString label);

          void setLabelVisible(bool visible);

          void setValue(qreal value);

          void setExploded(bool exploded);

          // customization

          void setPen(QPen pen);

          void setBrush(QBrush brush);

          void setLabelFont(QFont font);

          void setLabelPen(QPen pen);

          void setLabelArmLength(qreal len);

      private:

          // TODO: use private class

          friend class QPieSeries;

          // data

          qreal m_value;

          QString m_label;

          bool m_isLabelVisible;

          bool m_isExploded;

          // generated data

          qreal m_percentage;

          qreal m_angle;

          qreal m_span;

          // customization

          QPen m_pen;

          QBrush m_brush;

          QPen m_labelPen;

          QFont m_labelFont;

          qreal m_labelArmLength;

      };

      QTCOMMERCIALCHART_END_NAMESPACE

      #endif // QPIESLICE_H

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				#ifndef QPIESLICE_H
				#define QPIESLICE_H

				#include <qchartglobal.h>
				#include <QObject>
				#include <QPen>
				#include <QBrush>
				#include <QFont>

				QTCOMMERCIALCHART_BEGIN_NAMESPACE

				class QTCOMMERCIALCHART_EXPORT QPieSlice : public QObject
				{
				Q_OBJECT
				Q_PROPERTY(QString label READ label WRITE setLabel /NOTIFY dataYChanged/)
				Q_PROPERTY(qreal value READ value WRITE setValue /NOTIFY dataXChanged/)

				public:
				QPieSlice(QObject *parent = 0);
				QPieSlice(qreal value, QString label, bool labelVisible = true, QObject *parent = 0);
				virtual ~QPieSlice();

				// data
				qreal value() const;
				QString label() const;
				bool isLabelVisible() const;
				bool isExploded() const;

				// generated data
				qreal percentage() const;
				qreal angle() const;
				qreal span() const;

				// customization
				QPen pen() const;
				QBrush brush() const;
				QPen labelPen() const;
				QFont labelFont() const;
				qreal labelArmLenght() const;

				Q_SIGNALS:
				void clicked();
				void hoverEnter();
				void hoverLeave();
				void changed();

				public Q_SLOTS:

				// data
				void setLabel(QString label);
				void setLabelVisible(bool visible);
				void setValue(qreal value);
				void setExploded(bool exploded);

				// customization
				void setPen(QPen pen);
				void setBrush(QBrush brush);
				void setLabelFont(QFont font);
				void setLabelPen(QPen pen);
				void setLabelArmLength(qreal len);

				private:

				// TODO: use private class
				friend class QPieSeries;

				// data
				qreal m_value;
				QString m_label;
				bool m_isLabelVisible;
				bool m_isExploded;

				// generated data
				qreal m_percentage;
				qreal m_angle;
				qreal m_span;

				// customization
				QPen m_pen;
				QBrush m_brush;
				QPen m_labelPen;
				QFont m_labelFont;
				qreal m_labelArmLength;
				};

				QTCOMMERCIALCHART_END_NAMESPACE

				#endif // QPIESLICE_H