createOverlayControlsClipper property
Creates a clipper that applies to overlay controls, like drag handles, magnifiers, and popover toolbars, preventing the overlay controls from appearing outside the given clipping region.
If no clipper factory method is provided, then the overlay controls will be allowed to appear anywhere in the overlay in which they sit (probably the entire screen).
Implementation
final CustomClipper<Rect> Function(BuildContext overlayContext)? createOverlayControlsClipper;