import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: 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 StatefulWidget {
  const MyHomePage({Key? key, required this.title}) : super(key: key);

  final String title;

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

class _MyHomePageState extends State<MyHomePage> {
  Offset offset = Offset.zero;

  void _slideUp() {
    setState(() => offset -= const Offset(0, 1));
  }

  void _slideDown() {
    setState(() => offset += const Offset(0, 1));
  }

  @override
  Widget build(BuildContext context) {
    return Column(
      mainAxisSize: MainAxisSize.min,
      children: <Widget>[
        ElevatedButton(
          onPressed: _slideUp,
          child: const Text('Slide up'),
        ),
        ElevatedButton(
          onPressed: _slideDown,
          child: const Text('Slide down'),
        ),
        Padding(
          padding: const EdgeInsets.all(50),
          child: AnimatedSlide(
            offset: offset,
            duration: const Duration(milliseconds: 500),
            curve: Curves.easeInOut,
            child: const FlutterLogo(),
          ),
        ),
      ],
    );
  }
}