private:
QRect leftCycleArrowRect(const QRect& visualRect, const QModelIndex& index) const;
QRect rightCycleArrowRect(const QRect& visualRect, const QModelIndex& index) const;
private:
QRect leftCycleArrowRect(const QRect& visualRect, const QModelIndex& index) const;
QRect rightCycleArrowRect(const QRect& visualRect, const QModelIndex& index) const;