def hoverMove(self, item: QGraphicsItem,
event: QGraphicsSceneHoverEvent,
flag: bool = None):
"""flag is for the case where an item in the path also needs to
implement the hover method
Args:
item: Description
event: Description
flag: Description
"""
self.show()
self.updateLocation(item, item.mapToScene(QPointF(event.pos())))
pos_scene = item.mapToScene(QPointF(event.pos()))
pos_item = item.mapFromScene(pos_scene)
if flag is None:
self.setTopStrand(self.helixIndex(pos_item)[1] == 0)
else:
self.setTopStrand(flag)
new_position = self.helixPos(pos_item)
if new_position is not None:
self.setPos(new_position)
