onDown property

GestureDragDownCallback? onDown
getter/setter pair

A pointer has contacted the screen with a primary button and might begin to move.

The position of the pointer is provided in the callback's details argument, which is a DragDownDetails object.

See also:

  • allowedButtonsFilter, which decides which button will be allowed.
  • DragDownDetails, which is passed as an argument to this callback.


GestureDragDownCallback? onDown;