import 'dart:math' as math;

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(
        primarySwatch: Colors.blue,
      ),
      home: const MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

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

  final String title;

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(title),
      ),
      body: const Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            AnimatedWidgetExample(
            ),
          ],
        ),
      ),
    );
  }
}

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

  @override
  State<AnimatedWidgetExample> createState() => _AnimatedWidgetExampleState();
}

class _AnimatedWidgetExampleState extends State<AnimatedWidgetExample>
    with TickerProviderStateMixin {
  late final AnimationController _controller = AnimationController(
    duration: const Duration(seconds: 10),
    vsync: this,
  )..repeat();

  @override
  void dispose() {
    _controller.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return TextFieldWithSpinningMagnifier(controller: _controller);
  }
}

class TextFieldWithSpinningMagnifier extends AnimatedWidget {
  const TextFieldWithSpinningMagnifier({
    super.key,
    required AnimationController controller,
  }) : super(listenable: controller);

  Animation<double> get _progress => listenable as Animation<double>;

  @override
  Widget build(BuildContext context) {
    final TextMagnifierConfiguration magnifierConfiguration = TextMagnifierConfiguration(
      magnifierBuilder: (BuildContext context, MagnifierController controller, ValueNotifier<MagnifierInfo>? info) {
        return Transform.rotate(
          angle: _progress.value * 2.0 * math.pi,
          child: Container(width: 200.0, height: 200.0, color: Colors.green),
        );
      },
    );

    return TextField(
      magnifierConfiguration: magnifierConfiguration,
    );
  }
}