PageView Scroll Physics test

main.dart

import 'package:flutter/material.dart';
import 'package:flutter/cupertino.dart';

const Color darkBlue = Color.fromARGB(255, 18, 32, 47);

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      theme: ThemeData.dark().copyWith(
        scaffoldBackgroundColor: darkBlue,
      ),
      debugShowCheckedModeBanner: false,
      home: const Scaffold(
        body: Center(
          child: ScrollTest(),
        ),
      ),
    );
  }
}

class ScrollTest extends StatefulWidget {
  const ScrollTest({Key? key}) : super(key: key);

  @override
  _ScrollTestState createState() => _ScrollTestState();
}

class _ScrollTestState extends State<ScrollTest> {
  late PageController _controller;

  int _sliderNumber = 5000;

  @override
  void initState() {
    super.initState();

    _controller = PageController(
      initialPage: 5000,
      viewportFraction: 0.15,
    );
  }

  @override
  Widget build(BuildContext context) {
    return SizedBox(
      height: 75,
      child: PageView.builder(
        controller: _controller,
        itemCount: 10000,
        onPageChanged: (i) {
          debugPrint('page changed to $i');
          setState(() {
            _sliderNumber = i;
          });
        },
        scrollBehavior: const CupertinoScrollBehavior(),
        itemBuilder: (context, i) => Container(
          color: Colors.blue,
          child: Center(
            child: AnimatedScale(
              scale: _sliderNumber == i ? 3 : 1,
              duration: const Duration(milliseconds: 200),
              curve: Curves.easeInOut,
              child: Text(
                i.toString(),
                style: const TextStyle(fontSize: 20),
              ),
            ),
          ),
        ),
      ),
    );
  }
}