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starrating.h Example File
itemviews/stardelegate/starrating.h

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 #ifndef STARRATING_H
 #define STARRATING_H

 #include <QMetaType>
 #include <QPointF>
 #include <QVector>

 class StarRating
 {
 public:
     enum EditMode { Editable, ReadOnly };

     StarRating(int starCount = 1, int maxStarCount = 5);

     void paint(QPainter *painter, const QRect &rect,
                const QPalette &palette, EditMode mode) const;
     QSize sizeHint() const;
     int starCount() const { return myStarCount; }
     int maxStarCount() const { return myMaxStarCount; }
     void setStarCount(int starCount) { myStarCount = starCount; }
     void setMaxStarCount(int maxStarCount) { myMaxStarCount = maxStarCount; }

 private:
     QPolygonF starPolygon;
     QPolygonF diamondPolygon;
     int myStarCount;
     int myMaxStarCount;
 };

 Q_DECLARE_METATYPE(StarRating)

 #endif