layout method

  1. @override
void layout(
  1. Context context,
  2. BoxConstraints constraints, {
  3. bool parentUsesSize = false,
})
override

First widget pass to calculate the children layout and bounding box

Implementation

@override
void layout(Context context, BoxConstraints constraints,
    {bool parentUsesSize = false}) {
  _context = inherited != null ? context.inheritFrom(inherited!) : context;
  _child = build!(_context!);
  super.layout(_context!, constraints);
}