builder property

Widget Function(BuildContext context, LayoutBox box) builder
final

Builder function that creates the child widget with layout information.

Called during build with the current BuildContext and a LayoutBox containing layout information such as viewport size, scroll offsets, and content dimensions. The builder should return a widget based on this layout context.

Example:

builder: (context, box) {
  return Text('Viewport: ${box.viewportSize.width}x${box.viewportSize.height}');
}

Implementation

final Widget Function(BuildContext context, LayoutBox box) builder;