flutter_flutter

mirror of https://github.com/flutter/flutter.git synced 2026-01-23 16:36:37 +08:00

History

Introduce CircularProgressIndicator.padding for the updated M3 specs (#159271 )

Fix [Add `CircularProgressIndicator` padding to match M3
specs](https://github.com/flutter/flutter/issues/159267)

### Code sample

<details>
<summary>expand to view the code sample</summary> 

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

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

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      home: Scaffold(
        body: Center(
          child: Row(
            mainAxisAlignment: MainAxisAlignment.center,
            children: [
              Container(
                width: 40,
                height: 40,
                color: Colors.red,
                alignment: Alignment.center,
                child: const Text(
                  '40x40px',
                  style: TextStyle(fontSize: 8, color: Colors.white),
                ),
              ),
              const ColoredBox(
                color: Colors.amber,
                child: CircularProgressIndicator(
                  year2023: false,
                  value: 0.4,
                ),
              ),
              Container(
                width: 48,
                height: 48,
                color: Colors.red,
                alignment: Alignment.center,
                child: const Text(
                  '48x48px',
                  style: TextStyle(fontSize: 10, color: Colors.white),
                ),
              )
            ],
          ),
        ),
      ),
    );
  }
}

```

</details>

### Preview

<img width="454" alt="Screenshot 2024-11-21 at 17 13 25"
src="https://github.com/user-attachments/assets/6f7520f1-a213-4814-8116-6dd996639eec">

### Specs


![Screenshot_2024-11-20_at_12 17
46_PM](https://github.com/user-attachments/assets/3ab005cc-e93a-485a-8470-f80072440948)


## Pre-launch Checklist

- [x] I read the [Contributor Guide] and followed the process outlined
there for submitting PRs.
- [x] I read the [Tree Hygiene] wiki page, which explains my
responsibilities.
- [x] I read and followed the [Flutter Style Guide], including [Features
we expect every widget to implement].
- [x] I signed the [CLA].
- [x] I listed at least one issue that this PR fixes in the description
above.
- [x] I updated/added relevant documentation (doc comments with `///`).
- [x] I added new tests to check the change I am making, or this PR is
[test-exempt].
- [ ] I followed the [breaking change policy] and added [Data Driven
Fixes] where supported.
- [x] All existing and new tests are passing.

If you need help, consider asking for advice on the #hackers-new channel
on [Discord].

<!-- Links -->
[Contributor Guide]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#overview
[Tree Hygiene]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md
[test-exempt]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#tests
[Flutter Style Guide]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md
[Features we expect every widget to implement]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md#features-we-expect-every-widget-to-implement
[CLA]: https://cla.developers.google.com/
[flutter/tests]: https://github.com/flutter/tests
[breaking change policy]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#handling-breaking-changes
[Discord]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Chat.md
[Data Driven Fixes]:
https://github.com/flutter/flutter/blob/main/docs/contributing/Data-driven-Fixes.md