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// 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.
// Template: dev/snippets/config/templates/stateless_widget_scaffold.tmpl
//
// Comment lines marked with "▼▼▼" and "▲▲▲" are used for authoring
// of samples, and may be ignored if you are just exploring the sample.
// Flutter code sample for CupertinoScrollbar
//
//***************************************************************************
//* ▼▼▼▼▼▼▼▼ description ▼▼▼▼▼▼▼▼ (do not modify or remove section marker)
// This sample shows a [CupertinoScrollbar] that fades in and out of view as scrolling occurs.
// The scrollbar will fade into view as the user scrolls, and fade out when scrolling stops.
// The `thickness` of the scrollbar will animate from 6 pixels to the `thicknessWhileDragging` of 10
// when it is dragged by the user. The `radius` of the scrollbar thumb corners will animate from 34
// to the `radiusWhileDragging` of 0 when the scrollbar is being dragged by the user.
//* ▲▲▲▲▲▲▲▲ description ▲▲▲▲▲▲▲▲ (do not modify or remove section marker)
//***************************************************************************
//****************************************************************************
//* ▼▼▼▼▼▼▼▼ code-imports ▼▼▼▼▼▼▼▼ (do not modify or remove section marker)
import 'package:flutter/cupertino.dart';
//* ▲▲▲▲▲▲▲▲ code-imports ▲▲▲▲▲▲▲▲ (do not modify or remove section marker)
//****************************************************************************
import 'package:flutter/material.dart';
void main() => runApp(const MyApp());
/// This is the main application widget.
class MyApp extends StatelessWidget {
const MyApp({Key? key}) : super(key: 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 MyStatelessWidget(),
),
);
}
}
/// This is the stateless widget that the main application instantiates.
class MyStatelessWidget extends StatelessWidget {
const MyStatelessWidget({Key? key}) : super(key: key);
@override
//********************************************************************
//* ▼▼▼▼▼▼▼▼ code ▼▼▼▼▼▼▼▼ (do not modify or remove section marker)
@override
Widget build(BuildContext context) {
return CupertinoScrollbar(
thickness: 6.0,
thicknessWhileDragging: 10.0,
radius: const Radius.circular(34.0),
radiusWhileDragging: Radius.zero,
child: ListView.builder(
itemCount: 120,
itemBuilder: (BuildContext context, int index) {
return Center(
child: Text('item $index'),
);
},
),
);
}
//* ▲▲▲▲▲▲▲▲ code ▲▲▲▲▲▲▲▲ (do not modify or remove section marker)
//********************************************************************
}