Widget actively takes as much space as available.
Widget size is fixed and will not grow or shrink.
Widget size hint is ignored and it takes all available space.
Widget can shrink but prefers its size hint as maximum.
Widget can grow but prefers its minimum size hint.
Widget can grow and will expand if extra space is available, but prefers its minimum size hint.
Widget uses its size hint as preferred size and can grow or shrink.
Enum defining how a widget resizes along a single axis.