#ifndef PIE_LEGEND_H
#define PIE_LEGEND_H

#include <QtWidgets>

#include "DataPoint.h"

class PieChartScene;

class PieLegend: public QGraphicsItem
{
public:
    static const int Width = 150;
    static const int SquareSide = 20;
    static const int LabelSpacing = 10;
    static const int LabelTextSpacing = 10;

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

private:
    void addLabels();
    QPointF getLabelPos(int index) const;
    void addLabel(int index, const QPointF& pos);
    QPointF getTextPos(const QPointF& squarePos,
            const QGraphicsSimpleTextItem* textItem) const;

private:
    const PieChartScene* scene;
};

#endif