import 'package:flutter/material.dart';

void main() {
  runApp(MaterialApp(
    title: 'Scaling drag destures is bad',
    home: Scaffold(
      body: Center(
        child: SizedBox(
          width: 240,
          height: 240,
          child: FittedBox(
            fit: BoxFit.fill,
            child: DecoratedBox(
              decoration: BoxDecoration(
                border: Border.all(color: Colors.grey),
                borderRadius: BorderRadius.all(Radius.circular(5)),
                color: Colors.white,
              ),
              child: Padding(
                padding: EdgeInsets.all(1),
                child: ClipRRect(
                  borderRadius: BorderRadius.all(Radius.circular(4)),
                  child: SizedBox(
                    width: 38,
                    height: 38,
                    child: Center(
                      child: ListWheelScrollView(
                        itemExtent: 15,
                        children: <Widget>[
                          ...Iterable<int>.generate(100).map<Widget>((int index) {
                            return Text('$index');
                          }),
                        ],
                      ),
                    ),
                  ),
                ),
              ),
            ),
          ),
        ),
      ),
    ),
  ));
}