FractionallySizedBox constructor Null safety
- {Key? key,
- AlignmentGeometry alignment = Alignment.center,
- double? widthFactor,
- double? heightFactor,
- Widget? child}
Creates a widget that sizes its child to a fraction of the total available space.
If non-null, the widthFactor and heightFactor arguments must be non-negative.
Implementation
const FractionallySizedBox({
super.key,
this.alignment = Alignment.center,
this.widthFactor,
this.heightFactor,
super.child,
}) : assert(alignment != null),
assert(widthFactor == null || widthFactor >= 0.0),
assert(heightFactor == null || heightFactor >= 0.0);