flutter_buttons

A prototype implementation of the new design for buttons and button themes.

For more information about the design and to provide feedback please visit:

• The "Updating the Material Buttons and their Themes" design document at https://flutter.dev/go/material-button-system-updates.
• The corresponding Flutter GitHub issue: Updating the Material Buttons and their Themes #54776.

Sample

Here's a trivial example of the new button classes and their themes.

// pubspec.yaml must contain a dependency on the prototype flutter_buttons package
//
//  flutter_buttons:
//    git: [email protected]:HansMuller/flutter_buttons.git

import 'package:flutter/material.dart';

import 'package:flutter_buttons/flutter_buttons.dart';

class Buttons extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Center(
      child: Column(
        mainAxisSize: MainAxisSize.min,
        children: <Widget>[
          TextButton (
            onPressed: () { },
            child: Text('TextButton'),
          ),
          SizedBox(height: 16),
          ContainedButton(
            onPressed: () { print('ContainedButton'); },
            child: Text('ContainedButton'),
          ),
          SizedBox(height: 16),
          OutlinedButton(
            onPressed: () { },
            child: Text('OutlinedButton'),
          ),
        ],
      ),
    );
  }
}

class Home extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    final TextStyle headline4 = Theme.of(context).textTheme.headline4;
    return Scaffold(
      body: TextButtonTheme(
        data: TextButtonThemeData(
          style: TextButton.styleFrom(
            textStyle: headline4,
          ),
        ),
        child: ContainedButtonTheme(
          data: ContainedButtonThemeData(
            style: ContainedButton.styleFrom(
              textStyle: headline4,
            ),
          ),
          child: OutlinedButtonTheme(
            data: OutlinedButtonThemeData(
              style: OutlinedButton.styleFrom(
                textStyle: headline4,
              ),
            ),
            child: Buttons(),
          ),
        ),
      ),
    );
  }
}

void main() {
  runApp(MaterialApp(home: Home()));
}

This is a prototype, so there isn't any integration with the ThemeData class. When the classes in this repo are part of the Flutter framework, the button themes would be created as part of the app's overall theme. Instead of nesting the three button themes, one could write:

MaterialApp(
  home: Home(),
  theme: ThemeData(
    textButtonTheme: TextButtonTheme(
      data: TextButtonThemeData(
        style: TextButton.styleFrom(
          textStyle: headline4,
        ),
      ),
    ),
    containedButtonTheme: containedButtonTheme(
      data: ContainedButtonThemeData(
        style: ContainedButton.styleFrom(
          textStyle: headline4,
        ),
      ),
    ),
    outlinedButtonTheme: OutlinedButtonTheme(
      data: OutlinedButtonThemeData(
        style: OutlinedButton.styleFrom(
          textStyle: headline4,
        ),
      ),
    ),
  ),
)