Flutter hack Column https://twitter.com/lets4r/status/1371115245444468736

main.dart

import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp();

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        body: Center(
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            children: [
              Text("1"),
              MyAnotherWidget(),
              Text("2"),
            ],
          ),
        ),
      ),
    );
  }
}

// for normal use-case of custom render objects see
// https://nicksnettravels.builttoroam.com/create-a-flutter-widget/

class MyAnotherWidget extends SingleChildRenderObjectWidget {
  @override
  RenderMyAnotherWidget createRenderObject(BuildContext context) {
    return RenderMyAnotherWidget();
  }
}

class RenderMyAnotherWidget extends RenderProxyBox {
  @override
  void paint(PaintingContext context, Offset offset) {
    Future.delayed(
      Duration.zero,
      () {
        // print(parent);
        (parent as RenderFlex)
          // ..direction = Axis.horizontal
          // ..textDirection = TextDirection.ltr
          ..verticalDirection = VerticalDirection.up;
      },
    );
  }
}