flutter/examples/api/lib/material/ink_well/ink_well.0.dart

// Copyright 2014 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

/// Flutter code sample for [InkWell].

import 'package:flutter/material.dart';

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

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

  static const String _title = 'Flutter Code Sample';

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: _title,
      home: Scaffold(
        appBar: AppBar(title: const Text(_title)),
        body: const Center(
          child: MyStatefulWidget(),
        ),
      ),
    );
  }
}

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

  @override
  State<MyStatefulWidget> createState() => _MyStatefulWidgetState();
}

class _MyStatefulWidgetState extends State<MyStatefulWidget> {
  double sideLength = 50;

  @override
  Widget build(BuildContext context) {
    return AnimatedContainer(
      height: sideLength,
      width: sideLength,
      duration: const Duration(seconds: 2),
      curve: Curves.easeIn,
      child: Material(
        color: Colors.yellow,
        child: InkWell(
          onTap: () {
            setState(() {
              sideLength == 50 ? sideLength = 100 : sideLength = 50;
            });
          },
        ),
      ),
    );
  }
}