Taha Tesser 559c314ba3

Update the RangeSlider widget to the 2024 Material Design appearance (#163736) ...

Fixes [Update `RangeSlider` for Material 3
redesign](https://github.com/flutter/flutter/issues/162505)

### Description

This PR updates `RangeSlider` with `year2023` flag which can be used to
opt into the 2024 `RangeSlider design appearance.

### Code Sample

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

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

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

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      theme: ThemeData(
        sliderTheme: const SliderThemeData(
          showValueIndicator: ShowValueIndicator.always,
        ),
      ),
      home: Scaffold(
        appBar: AppBar(title: const Text('RangeSlider Sample')),
        body: const RangeSliderExample(),
      ),
    );
  }
}

class RangeSliderExample extends StatefulWidget {
  const RangeSliderExample({super.key});

  @override
  State<RangeSliderExample> createState() => _RangeSliderExampleState();
}

class _RangeSliderExampleState extends State<RangeSliderExample> {
  RangeValues _currentRange1Values = const RangeValues(20.0, 60.0);
  RangeValues _currentRange2Values = const RangeValues(30.0, 80.0);

  @override
  Widget build(BuildContext context) {
    return Column(
      spacing: 20.0,
      mainAxisAlignment: MainAxisAlignment.center,
      children: <Widget>[
        RangeSlider(
          year2023: false,
          values: _currentRange1Values,
          max: 100,
          onChanged: (RangeValues values) {
            setState(() {
              _currentRange1Values = values;
            });
          },
        ),
        RangeSlider(
          year2023: false,
          values: _currentRange2Values,
          max: 100,
          divisions: 10,
          labels: RangeLabels(
            _currentRange2Values.start.round().toString(),
            _currentRange2Values.end.round().toString(),
          ),
          onChanged: (RangeValues values) {
            setState(() {
              _currentRange2Values = values;
            });
          },
        ),
      ],
    );
  }
}
```

</details>

| Preview 1 | Preview 2 |
| --------------- | --------------- |
| <img
src="https://github.com/user-attachments/assets/e14a1b04-4e32-4b37-b2f5-2d2001f53114"/>
| <img
src="https://github.com/user-attachments/assets/aad36529-d576-4ec7-b2e5-49c9387456be"/>
|


# Custom track gap and thumb size 

<img width="343" alt="Screenshot 2025-02-20 at 15 26 09"
src="https://github.com/user-attachments/assets/06c09679-1df8-4380-b3e6-c4add8f0cc42"
/>
<img width="338" alt="Screenshot 2025-02-20 at 15 27 19"
src="https://github.com/user-attachments/assets/6226c515-f96b-412a-b59e-cafd2fba0515"
/>

                

## 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

2025-05-19 17:10:12 +00:00

..

gen_defaults.dart

Update the RangeSlider widget to the 2024 Material Design appearance (#163736)

2025-05-19 17:10:12 +00:00