inline BufferId bufferForBacklogFetching() const;
int sectionByScenePos(int x);
inline int sectionByScenePos(const QPoint &pos) { return sectionByScenePos(pos.x()); }
inline BufferId bufferForBacklogFetching() const;
int sectionByScenePos(int x);
inline int sectionByScenePos(const QPoint &pos) { return sectionByScenePos(pos.x()); }