grayscale 0.0.5+3

grayscale: ^0.0.5+3 copied to clipboard

example/lib/main.dart

import 'package:flutter/material.dart';
import 'package:grayscale/grayscale.dart';
import 'package:provider/provider.dart';
import 'package:ui_example/ui_example.dart';

void main() {
  runApp(
    ChangeNotifierProvider(
      create: (context) => GrayscaleModel(),
      child: const GrayscaleApp(),
    ),
  );
}

class GrayscaleApp extends StatelessWidget {
  const GrayscaleApp({super.key});

  @override
  Widget build(BuildContext context) {
    return Consumer<GrayscaleModel>(
      builder: (context, grayscale, child) {
        final lightTheme = grayscale.isGray
            ? ThemeData(
                colorScheme: GrayColorScheme.highContrastGray(Brightness.light))
            : ThemeData(brightness: Brightness.light);

        final darkTheme = grayscale.isGray
            ? ThemeData(
                colorScheme: GrayColorScheme.highContrastGray(Brightness.dark))
            : ThemeData(brightness: Brightness.dark);

        return MaterialApp(
          title: 'Grayscale Demo',
          theme: lightTheme,
          darkTheme: darkTheme,
          themeMode: ThemeMode.system,
          home: const HomePage(title: 'Grayscale Demo'),
        );
      },
    );
  }
}

class HomePage extends StatelessWidget {
  const HomePage({super.key, required this.title});

  final String title;

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(title),
        centerTitle: true,
      ),
      body: const SingleChildScrollView(
        child: Column(
          children: [
            GrayscaleSwitch(),
            Padding(
              padding: EdgeInsets.all(16.0),
              // Defined in https://github.com/intoffset/flutter_examples/blob/main/ui_example/lib/ui_example.dart
              child: UiExample(),
            ),
          ],
        ),
      ),
    );
  }
}

class GrayscaleSwitch extends StatelessWidget {
  const GrayscaleSwitch({super.key});

  @override
  Widget build(BuildContext context) {
    return Consumer<GrayscaleModel>(builder: (context, grayscale, child) {
      return SwitchListTile(
        title: const Text('Grayscale'),
        value: grayscale.isGray,
        onChanged: (v) => grayscale.setValue(v),
      );
    });
  }
}

class GrayscaleModel extends ChangeNotifier {
  bool _isGray = true;
  bool get isGray => _isGray;

  void setValue(bool value) {
    _isGray = value;
    notifyListeners();
  }
}