getSize method Null safety

Size getSize(
  1. BoxConstraints constraints
)

Override this method to return the size of this object given the incoming constraints.

The size cannot reflect the sizes of the children. If this layout has a fixed width or height the returned size can reflect that; the size will be constrained to the given constraints.

By default, attempts to size the box to the biggest size possible given the constraints.

Implementation

Size getSize(BoxConstraints constraints) => constraints.biggest;