margin property
The empty space that surrounds the tip.
Defines the tip's outer Container.margin. By default, a long tip will span the width of its window. If long enough, a tip might also span the window's height. This property allows one to define how much space the tip must be inset from the edges of their display window.
Default:
EdgeInsets.symmetric(horizontal: 16.0)
Implementation
final EdgeInsets margin;