theme_extensions_builder 2.0.1+2

Code generator for Flutter's 3.0 ThemeExtension classes. theme_extensions_builder generator helps to minimize the required boilerplate code.

example/lib/main.dart

import 'package:example/theme/background.dart';
import 'package:example/theme/elevated_button.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(
      title: 'Flutter Demo',
      theme: ThemeData(
        extensions: const [
          ElevatedButtonThemeExtension(
            foregroundColor: Colors.white,
            backgroundColor: Colors.red,
          ),
          BackgroundThemeExtension(
            color: Colors.grey,
            radius: 6,
          ),
        ],
      ),
      home: const MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({super.key, required this.title});

  final String title;

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  int _counter = 0;

  void _incrementCounter() {
    setState(() {
      _counter++;
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: context.backgroundTheme.color,
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            const Text(
              'You have pushed the button this many times:',
            ),
            Text(
              '$_counter',
              style: Theme.of(context).textTheme.headline4,
            ),
            ElevatedButton(
              style: ElevatedButton.styleFrom(
                backgroundColor: context.elevatedButtonTheme.backgroundColor,
              ),
              onPressed: _incrementCounter,
              child: const Text('Increment'),
            )
          ],
        ),
      ),
      // This trailing comma makes auto-formatting nicer for build methods.
    );
  }
}