Taha Tesser
9e88446f89
Fix Slider thumb doesn't align with divisions, thumb padding, and rounded corners (#149594)
fixes [[Slider] Thumb's center doesn't align with division's center](https://github.com/flutter/flutter/issues/62567)
fixes [Slider thumb doesn't respect round slider track shape](https://github.com/flutter/flutter/issues/149591)
fixes [`RoundedRectSliderTrackShape` corners are not rendered correctly](https://github.com/flutter/flutter/issues/149589)
(Verified these behaviors with Android components implementation)
### 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> {
double _value = 5.0;
@override
Widget build(BuildContext context) {
return MaterialApp(
debugShowCheckedModeBanner: false,
theme: ThemeData(
sliderTheme: const SliderThemeData(
trackHeight: 32,
thumbColor: Colors.green,
activeTrackColor: Colors.deepPurple,
inactiveTrackColor: Colors.amber,
),
),
home: Scaffold(
body: Slider(
value: _value,
// divisions: 10,
// ignore: avoid_redundant_argument_values
min: 0,
max: 10,
onChanged: (double value) {
setState(() {
_value = value;
});
},
),
),
);
}
}
```
</details>
### Description
This PR fixes several core `Sliders` issues which are apparent in https://github.com/flutter/flutter/pull/147783. As a result, fixing the these bugs will unblock it.
### 1. Fixes the thumb doesn't align with `Slider` divisions.
### 2. Fixes `RoundedRectSliderTrackShape` corners are not rendered correctly.
### 3. Fixes round track shape corners when the thumb is at the start or end of the round track shape.
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