dev/integration_tests/new_gallery/lib/main.dart

// Copyright 2014 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:flutter/scheduler.dart' show timeDilation;
import 'package:flutter_localized_locales/flutter_localized_locales.dart';
import 'package:google_fonts/google_fonts.dart';

import 'constants.dart';
import 'data/gallery_options.dart';
import 'gallery_localizations.dart';
import 'layout/adaptive.dart';
import 'pages/backdrop.dart';
import 'pages/splash.dart';
import 'routes.dart';
import 'themes/gallery_theme_data.dart';

export 'package:gallery/data/demos.dart' show pumpDeferredLibraries;

void main() async {
  GoogleFonts.config.allowRuntimeFetching = false;
  runApp(const GalleryApp());
}

class GalleryApp extends StatelessWidget {
  const GalleryApp({
    super.key,
    this.initialRoute,
    this.isTestMode = false,
  });

  final String? initialRoute;
  final bool isTestMode;

  @override
  Widget build(BuildContext context) {
    return ModelBinding(
      initialModel: GalleryOptions(
        themeMode: ThemeMode.system,
        textScaleFactor: systemTextScaleFactorOption,
        customTextDirection: CustomTextDirection.localeBased,
        locale: null,
        timeDilation: timeDilation,
        platform: defaultTargetPlatform,
        isTestMode: isTestMode,
      ),
      child: Builder(
        builder: (BuildContext context) {
          final GalleryOptions options = GalleryOptions.of(context);
          return MaterialApp(
            restorationScopeId: 'rootGallery',
            title: 'Flutter Gallery',
            debugShowCheckedModeBanner: false,
            themeMode: options.themeMode,
            theme: GalleryThemeData.lightThemeData.copyWith(
              platform: options.platform,
            ),
            darkTheme: GalleryThemeData.darkThemeData.copyWith(
              platform: options.platform,
            ),
            localizationsDelegates: const <LocalizationsDelegate<Object?>>[
              ...GalleryLocalizations.localizationsDelegates,
              LocaleNamesLocalizationsDelegate()
            ],
            initialRoute: initialRoute,
            supportedLocales: GalleryLocalizations.supportedLocales,
            locale: options.locale,
            localeListResolutionCallback: (List<Locale>? locales, Iterable<Locale> supportedLocales) {
              deviceLocale = locales?.first;
              return basicLocaleListResolution(locales, supportedLocales);
            },
            onGenerateRoute: (RouteSettings settings) =>
                RouteConfiguration.onGenerateRoute(settings),
          );
        },
      ),
    );
  }
}

// ignore: unreachable_from_main
class RootPage extends StatelessWidget {
  // ignore: unreachable_from_main
  const RootPage({
    super.key,
  });

  @override
  Widget build(BuildContext context) {
    return ApplyTextOptions(
      child: SplashPage(
        child: Backdrop(
          isDesktop: isDisplayDesktop(context),
        ),
      ),
    );
  }
}