flutter/examples/api/lib/widgets/transitions/slide_transition.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.

import 'package:flutter/material.dart';

/// Flutter code sample for [SlideTransition].

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

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

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

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

  @override
  State<SlideTransitionExample> createState() => _SlideTransitionExampleState();
}

class _SlideTransitionExampleState extends State<SlideTransitionExample> with SingleTickerProviderStateMixin {
  late final AnimationController _controller = AnimationController(
    duration: const Duration(seconds: 2),
    vsync: this,
  )..repeat(reverse: true);
  late final Animation<Offset> _offsetAnimation = Tween<Offset>(
    begin: Offset.zero,
    end: const Offset(1.5, 0.0),
  ).animate(CurvedAnimation(
    parent: _controller,
    curve: Curves.elasticIn,
  ));

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

  @override
  Widget build(BuildContext context) {
    return SlideTransition(
      position: _offsetAnimation,
      child: const Padding(
        padding: EdgeInsets.all(8.0),
        child: FlutterLogo(size: 150.0),
      ),
    );
  }
}