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#ifndef PIESERIES_H
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#define PIESERIES_H
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#include "qseries.h"
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#include <QObject>
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#include <QRectF>
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#include <QColor>
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#include <QPen>
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#include <QBrush>
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#include <QSignalMapper>
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class QGraphicsObject;
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QTCOMMERCIALCHART_BEGIN_NAMESPACE
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class PieChartItem;
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class PieSlice;
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class QPieSlice;
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class QTCOMMERCIALCHART_EXPORT QPieSeries : public QSeries
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{
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Q_OBJECT
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public:
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class ChangeSet
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{
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public:
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// TODO: these should not really be exposed to the public API
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void appendAdded(QPieSlice* slice);
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void appendAdded(QList<QPieSlice*> slices);
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void appendChanged(QPieSlice* slice);
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void appendRemoved(QPieSlice* slice);
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QList<QPieSlice*> added() const;
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QList<QPieSlice*> changed() const;
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QList<QPieSlice*> removed() const;
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bool isEmpty() const;
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private:
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QList<QPieSlice*> m_added;
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QList<QPieSlice*> m_changed;
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QList<QPieSlice*> m_removed;
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};
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public:
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QPieSeries(QObject *parent = 0);
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virtual ~QPieSeries();
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public: // from QChartSeries
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QSeriesType type() const;
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public:
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// slice setters
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void add(QPieSlice* slice);
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void add(QList<QPieSlice*> slices);
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void replace(QList<QPieSlice*> slices);
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void remove(QPieSlice* slice);
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void clear();
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// sluce getters
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QList<QPieSlice*> slices() const;
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// calculated data
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int count() const;
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qreal total() const;
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// pie customization
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void setPiePosition(qreal relativeHorizontalPosition, qreal relativeVerticalPosition);
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qreal pieHorizontalPosition() const;
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qreal pieVerticalPosition() const;
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void setPieSize(qreal relativeSize);
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qreal pieSize() const;
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void setPieStartAngle(qreal startAngle);
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qreal pieStartAngle() const;
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void setPieEndAngle(qreal endAngle);
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qreal pieEndAngle() const;
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// convenience function
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QPieSeries& operator << (QPieSlice* slice);
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QPieSlice* add(qreal value, QString name);
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void setLabelsVisible(bool visible = true);
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// data from model
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bool setModel(QAbstractItemModel* model);
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void setModelMapping(int modelValuesLine, int modelLabelsLine, Qt::Orientation orientation = Qt::Vertical);
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// TODO: find slices?
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// QList<QPieSlice*> findByValue(qreal value);
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// ...
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// TODO: sorting slices?
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// void sort(QPieSeries::SortByValue|label|??)
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// TODO: general graphics customization
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// setDrawStyle(2d|3d)
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// setDropShadows
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Q_SIGNALS:
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void clicked(QPieSlice* slice);
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void hoverEnter(QPieSlice* slice);
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void hoverLeave(QPieSlice* slice);
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void changed(); // TODO: hide this in PIMPL
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private Q_SLOTS: // TODO: should be private and not visible in the interface at all
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void sliceChanged();
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void sliceClicked();
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void sliceHoverEnter();
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void sliceHoverLeave();
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// slots for updating pie when data in model changes
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void modelUpdated(QModelIndex topLeft, QModelIndex bottomRight);
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void modelDataAdded(QModelIndex parent, int start, int end);
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void modelDataRemoved(QModelIndex parent, int start, int end);
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private:
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void updateDerivativeData();
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private:
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Q_DISABLE_COPY(QPieSeries)
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// TODO: use PIML
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friend class PieChartItem;
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friend class PieSlice;
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QList<QPieSlice*> m_slices;
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qreal m_pieRelativeHorPos;
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qreal m_pieRelativeVerPos;
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qreal m_pieRelativeSize;
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qreal m_pieStartAngle;
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qreal m_pieEndAngle;
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qreal m_total;
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// model map
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int m_mapValues;
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int m_mapLabels;
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Qt::Orientation m_mapOrientation;
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};
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QTCOMMERCIALCHART_END_NAMESPACE
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#endif // PIESERIES_H
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