github/flutter
7
0
Fork 0
mirror of https://github.com/flutter/flutter.git synced 2025-06-03 00:51:18 +00:00
Code Issues Packages Projects Releases Wiki Activity
38cad013e0
flutter/dev/tools/gen_defaults
History
Taha Tesser e1cd7b11f6
Introduce Switch.padding (#149884) 
fixes [Switch has some padding that leads to uncentered UI](https://github.com/flutter/flutter/issues/148498)

### 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: Column(
            mainAxisSize: MainAxisSize.min,
            children: <Widget>[
              ColoredBox(
                color: Colors.amber,
                child: Switch(
                  padding: EdgeInsets.zero,
                  value: true,
                  materialTapTargetSize: MaterialTapTargetSize.padded,
                  onChanged: (bool value) {},
                ),
              ),
              const SizedBox(height: 16),
              ColoredBox(
                color: Colors.amber,
                child: Switch(
                  value: true,
                  materialTapTargetSize: MaterialTapTargetSize.shrinkWrap,
                  onChanged: (bool value) {},
                ),
              ),
            ],
          ),
        ),
      ),
    );
  }
}
```

</details>

### Default Switch size

<img width="476" alt="Screenshot 2024-07-11 at 13 25 05" src="https://github.com/flutter/flutter/assets/48603081/f9f3f6c6-443d-4bd5-81d4-5e314554b032">

### Update Switch size using the new `Switch.padding` to address  [Switch has some padding that leads to uncentered UI](https://github.com/flutter/flutter/issues/148498)

<img width="476" alt="Screenshot 2024-07-11 at 13 24 40" src="https://github.com/flutter/flutter/assets/48603081/aea0717b-e852-4b8d-b703-c8c4999d4863">
2024-07-16 20:25:09 +00:00
..
bin Update tokens to 4.0.0 (#148789) 2024-05-22 15:08:25 +00:00
data Update Material token to the latest 4.1.0 (#150382) 2024-06-20 20:39:58 +00:00
generated Update Material token to the latest 4.1.0 (#150382) 2024-06-20 20:39:58 +00:00
lib Introduce Switch.padding (#149884) 2024-07-16 20:25:09 +00:00
test Fix gen_defaults test randomness (#142743) 2024-02-01 21:22:51 +00:00
dart_test.yaml Really disable shuffling for gen_defaults tests (#142721) 2024-02-01 10:09:07 -08:00
pubspec.yaml Roll pub packages (#151816) 2024-07-16 12:34:24 +00:00
README.md Added missing code block language in docs (#147481) 2024-05-01 14:44:27 +00:00
test.json Improve defaults generation with logging, stats, and token validation (#128244) 2023-06-09 11:28:18 +00:00

README.md

Token Defaults Generator

Script that generates component theme data defaults based on token data.

Usage

Run this program from the root of the git repository:

dart dev/tools/gen_defaults/bin/gen_defaults.dart [-v]

This updates generated/used_tokens.csv and the various component theme files.

Templates

There is a template file for every component that needs defaults from the token database. These templates are implemented as subclasses of TokenTemplate. This base class provides some utilities and a structure for adding a new block of generated code to the bottom of a given file.

Templates need to override the generate method to provide the generated code block as a string.

See lib/fab_template.dart for an example that generates defaults for the Floating Action Button.

Tokens

Tokens are stored in JSON files in data/, and are sourced from an internal Google database.

template.dart should provide nearly all useful token resolvers (e.g. color, shape, etc.). For special cases in which one shouldn't be defined, use getToken to get the raw token value. The script, through the various revolvers and getToken, validates tokens, keeps track of which tokens are used, and generates generated/used_tokens.csv.