preferredExtent method

  1. @override
double preferredExtent(
  1. double offset,
  2. ViewportLayout layout
)
override

Implementation

@override
double preferredExtent(double offset, ViewportLayout layout) {
  switch (size) {
    case SheetSize.fit:
      return layout.contentSize.height;
    case SheetSize.stretch:
      return offset - layout.viewportPadding.bottom;
  }
}