getOffsetY method Null safety

  1. @override
double getOffsetY(
  1. ScaffoldPrelayoutGeometry scaffoldGeometry,
  2. double adjustment
)
override

Calculates y-offset for FloatingActionButtonLocations floating over the transition between the Scaffold.appBar and the Scaffold.body.

Implementation

@override
double getOffsetY(ScaffoldPrelayoutGeometry scaffoldGeometry, double adjustment) {
  if (scaffoldGeometry.contentTop > scaffoldGeometry.minViewPadding.top) {
    final double fabHalfHeight = scaffoldGeometry.floatingActionButtonSize.height / 2.0;
    return scaffoldGeometry.contentTop - fabHalfHeight;
  }
  // Otherwise, ensure we are placed within the bounds of a safe area.
  return scaffoldGeometry.minViewPadding.top;
}