buildWithChild method

@override Widget buildWithChild(BuildContext context, Widget? child)

A build method that receives an extra child parameter.

This method may be called with a child different from the parameter passed to the constructor of SingleChildStatelessWidget. It may also be called again with a different child, without this widget being recreated.

Implementation

@override
Widget buildWithChild(BuildContext context, Widget? child) {
  final constraints = this.constraints ??
      const BoxConstraints().copyWith(
        minWidth: minSize?.width ?? minWidth ?? minDimension,
        minHeight: minSize?.height ?? minHeight ?? minDimension,
        maxWidth: maxSize?.width ?? maxWidth ?? maxDimension,
        maxHeight: maxSize?.height ?? maxHeight ?? maxDimension,
      );

  return duration == null
      ? ConstrainedBox(
          constraints: constraints,
          child: child,
        )
      : AnimatedConstrainedBox(
          constraints: constraints,
          duration: duration!,
          curve: curve,
          onEnd: onEnd,
          child: child,
        );
}