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### Description Fixes [`Slider` with transparent track colors and custom `trackHeight` cannot reach the extreme ends](https://github.com/flutter/flutter/issues/161210) but for `RangeSlider`. ### 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 StatefulWidget { const MyApp({super.key}); @override State<MyApp> createState() => _MyAppState(); } class _MyAppState extends State<MyApp> { RangeValues _values = const RangeValues(0, 100); @override Widget build(BuildContext context) { return MaterialApp( debugShowCheckedModeBanner: false, home: Scaffold( body: Center( child: Column( spacing: 20, mainAxisSize: MainAxisSize.min, children: <Widget>[ SliderTheme( data: const SliderThemeData( trackHeight: 100, activeTrackColor: Colors.transparent, inactiveTrackColor: Colors.transparent, ), child: RangeSlider( values: _values, max: 100, onChanged: (RangeValues values) { setState(() { _values = values; }); }, ), ), ], ), ), ), ); } } ``` </details> ### Before <img width="755" alt="Screenshot 2025-02-12 at 15 56 21" src="https://github.com/user-attachments/assets/e8c88bd8-3c87-46e2-9f29-b945128ae93a" /> ### After <img width="755" alt="Screenshot 2025-02-12 at 15 56 09" src="https://github.com/user-attachments/assets/5f9244e8-4d51-40f3-a3fc-afdf9dff9b35" /> ## 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