I am making a component based on GridView to show a grid of items. The items can be dragged and the GridView should scroll when the item come near to the edge.
I think I should use the flick(qreal xVelocity, qreal yVelocity) to make the scroll. But there has no document to explain the parameter. It just say it is pixel/sec. But what is the duration? Without the formula , it is quite difficult to find out the correct value that fulfill my requirement.
Anyone know the formula?
The velocity just defines how fast the GridView should flick. You cannot set to which position it should flick as far as I know.