#ifndef PIE_ROUND_H
#define PIE_ROUND_H

#include <QtWidgets>

#include "DataPoint.h"

class PieChartScene;

class PieRound: public QGraphicsItem
{
public:
    static const int Margin = 20;
    static const int Radius = 80;
    static const int LabelRadius = 50;

public:
    PieRound(const QPointF& center, const PieChartScene* scene);
    QRectF boundingRect() const;
    void paint(QPainter*, const QStyleOptionGraphicsItem*, QWidget* = 0) {}

private:
    void calculateSum();
    void addSectors();
    void addSector(int index, qreal startAngle, qreal sweep);
    QPainterPath createSectorPath(qreal startAngle, qreal sweep);
    void addSectorItem(const QPainterPath& path, QColor color);
    void addSectorLabel(int index, qreal startAngle, qreal sweep);
    QPointF getLabelPos(qreal startAngle, qreal sweep,
            QGraphicsSimpleTextItem* labelItem);

private:
    int sum;
    const PieChartScene* scene;
};

#endif