import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  const MyApp({super.key});
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
      ),
      home: const MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({super.key, required this.title});

  final String title;

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        backgroundColor: Theme.of(context).colorScheme.inversePrimary,
        title: Text(widget.title),
      ),
      body: Center(
        child: _AnimationBackground(
          body: Semantics(
            explicitChildNodes: true,
            child: Column(
              mainAxisSize: MainAxisSize.min,
              children: <Widget>[
                ...List.generate(
                  100,
                  (index) => IndexedSemantics(
                    index: index,
                    child: Container(
                      padding: const EdgeInsets.all(80),
                      color: Colors.red,
                      child: Text('teste $index'),
                    ),
                  ),
                ),
              ],
            ),
          ),
        ),
      ), // This trailing comma makes auto-formatting nicer for build methods.
    );
  }
}

class _AnimationBackground extends StatelessWidget {
  final Widget body;
  const _AnimationBackground({required this.body});

  @override
  Widget build(BuildContext context) {
    return ScrollConfiguration(
      behavior: ScrollConfiguration.of(context).copyWith(scrollbars: false),
      child: ListView(children: [body]),
    );
  }
}