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5491c8c146
This auto-formats all *.dart files in the repository outside of the `engine` subdirectory and enforces that these files stay formatted with a presubmit check. **Reviewers:** Please carefully review all the commits except for the one titled "formatted". The "formatted" commit was auto-generated by running `dev/tools/format.sh -a -f`. The other commits were hand-crafted to prepare the repo for the formatting change. I recommend reviewing the commits one-by-one via the "Commits" tab and avoiding Github's "Files changed" tab as it will likely slow down your browser because of the size of this PR. --------- Co-authored-by: Kate Lovett <katelovett@google.com> Co-authored-by: LongCatIsLooong <31859944+LongCatIsLooong@users.noreply.github.com>
53 lines
1.6 KiB
Dart
53 lines
1.6 KiB
Dart
// Copyright 2014 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import 'package:flutter/material.dart';
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/// Flutter code sample for [ScrollMetricsNotification].
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void main() => runApp(const ScrollMetricsDemo());
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class ScrollMetricsDemo extends StatefulWidget {
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const ScrollMetricsDemo({super.key});
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@override
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State<ScrollMetricsDemo> createState() => ScrollMetricsDemoState();
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}
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class ScrollMetricsDemoState extends State<ScrollMetricsDemo> {
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double windowSize = 200.0;
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@override
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Widget build(BuildContext context) {
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return MaterialApp(
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home: Scaffold(
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appBar: AppBar(title: const Text('ScrollMetrics Demo')),
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floatingActionButton: FloatingActionButton(
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child: const Icon(Icons.add),
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onPressed:
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() => setState(() {
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windowSize += 10.0;
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}),
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),
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body: NotificationListener<ScrollMetricsNotification>(
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onNotification: (ScrollMetricsNotification notification) {
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ScaffoldMessenger.of(
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notification.context,
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).showSnackBar(const SnackBar(content: Text('Scroll metrics changed!')));
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return false;
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},
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child: Scrollbar(
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thumbVisibility: true,
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child: SizedBox(
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height: windowSize,
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width: double.infinity,
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child: const SingleChildScrollView(primary: true, child: FlutterLogo(size: 300.0)),
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),
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),
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),
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),
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);
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}
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}
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