【Flutter】サイズ変更できないウィジェットを拡大・縮小させる

Transform.scale(
  scale: 2,
  child: CupertinoSwitch(
    value: _value,
    onChanged: (value) => setState(() => _value = value),
  ),
),

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

void main() => runApp(MyApp());

class MyApp extends StatefulWidget {
  const MyApp({super.key});

  @override
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  bool _value = true;

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(title: const Text('Flutter')),
        body: Center(
          child: Transform.scale(
            scale: 2,
            child: CupertinoSwitch(
              value: _value,
              onChanged: (value) => setState(() => _value = value),
            ),
          ),
        ),
      ),
    );
  }
}