setRelativeEdges
Sets the activation edge size relative to the host view's dimensions.
If both relative and maximum edges are specified, the maximum edge will be used to constrain the calculated relative edge size.
Return
The scroll helper, which may used to chain setter calls.
Parameters
horizontal
The horizontal edge size as a fraction of the host view width, or RELATIVE_UNSPECIFIED to always use the maximum value.
vertical
The vertical edge size as a fraction of the host view height, or RELATIVE_UNSPECIFIED to always use the maximum value.