ScrollAction slows down significantly when holding down keys #159194
Description
Steps to reproduce
- Place a
MaterialAppwidget at the root of your widget tree. - Place any scrollable widget below the
MaterialAppand make sure it uses thePrimaryScrollController. - Try scrolling down by pressing ctrl+down for desktop or just the down arrow for web.
- Then try doing the same, but holding the keys down.
Expected results
I would expect to scroll faster when holding down the keys than when pressing them repeatedly.
Actual results
Scrolling becomes significantly slower when holding down the keys compared to pressing them repeatedly.
Code sample
Code sample
import 'package:flutter/material.dart';
void main() => runApp(const ExampleApp());
class ExampleApp extends StatelessWidget {
const ExampleApp({super.key});
@override
Widget build(BuildContext context) => MaterialApp(
home: Scaffold(
body: ListView.builder(
primary: true,
itemCount: 15,
itemBuilder: (BuildContext context, int index) => Container(
color: Colors.primaries[index],
height: 150,
child: Center(
child: Text(
'Entry $index',
style: Theme.of(context).textTheme.headlineMedium,
),
),
),
),
),
);
}Screenshots or Video
Screenshots / Video demonstration
The first part shows the behavior when pressing the scroll keys repeatedly, and then while holding the scroll keys down.
Logs
No response
Flutter Doctor output
Doctor output
[✓] Flutter (Channel stable, 3.24.5, on Fedora Linux 41 (Workstation Edition) 6.11.7-300.fc41.x86_64, locale
en_US.UTF-8)
• Flutter version 3.24.5 on channel stable at /home/kamil/.local/apps/flutter
• Upstream repository https://github.com/flutter/flutter.git
• Framework revision dec2ee5c1f (7 days ago), 2024-11-13 11:13:06 -0800
• Engine revision a18df97ca5
• Dart version 3.5.4
• DevTools version 2.37.3
[✗] Android toolchain - develop for Android devices
✗ Unable to locate Android SDK.
Install Android Studio from: https://developer.android.com/studio/index.html
On first launch it will assist you in installing the Android SDK components.
(or visit https://flutter.dev/to/linux-android-setup for detailed instructions).
If the Android SDK has been installed to a custom location, please use
`flutter config --android-sdk` to update to that location.
[✓] Chrome - develop for the web
• CHROME_EXECUTABLE = /usr/bin/brave-browser-stable
[✓] Linux toolchain - develop for Linux desktop
• clang version 19.1.0 (Fedora 19.1.0-1.fc41)
• cmake version 3.30.5
• ninja version 1.12.1
• pkg-config version 2.3.0
[!] Android Studio (not installed)
• Android Studio not found; download from https://developer.android.com/studio/index.html
(or visit https://flutter.dev/to/linux-android-setup for detailed instructions).
[✓] VS Code (version 1.95.3)
• VS Code at /usr/share/code
• Flutter extension version 3.100.0
[✓] Connected device (2 available)
• Linux (desktop) • linux • linux-x64 • Fedora Linux 41 (Workstation Edition) 6.11.7-300.fc41.x86_64
• Chrome (web) • chrome • web-javascript • Brave Browser 131.1.73.89
[✓] Network resources
• All expected network resources are available.
! Doctor found issues in 2 categories.