samples/material_studies/rally/lib/app.dart

// Copyright 2019-present the Flutter authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

import 'package:flutter/material.dart';
import 'package:flutter/widgets.dart';

import 'package:rally/colors.dart';
import 'package:rally/home.dart';
import 'package:rally/login.dart';

/// The RallyApp is a MaterialApp with a theme and 2 routes.
///
/// The home route is the main page with tabs for sub pages.
/// The login route is the initial route.
class RallyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Rally',
      theme: _buildRallyTheme(),
      home: HomePage(),
      initialRoute: '/login',
      routes: {'/login': (context) => LoginPage()},
    );
  }

  ThemeData _buildRallyTheme() {
    final ThemeData base = ThemeData.dark();
    return ThemeData(
      scaffoldBackgroundColor: RallyColors.primaryBackground,
      primaryColor: RallyColors.primaryBackground,
      textTheme: _buildRallyTextTheme(base.textTheme),
      inputDecorationTheme: InputDecorationTheme(
        labelStyle:
            TextStyle(color: RallyColors.gray, fontWeight: FontWeight.w500),
        filled: true,
        fillColor: RallyColors.inputBackground,
        focusedBorder: InputBorder.none,
      ),
    );
  }

  TextTheme _buildRallyTextTheme(TextTheme base) {
    return base
        .copyWith(
          body1: base.body1.copyWith(
            fontFamily: 'Roboto Condensed',
            fontSize: 14,
            fontWeight: FontWeight.w400,
          ),
          body2: base.body2.copyWith(
            fontFamily: 'Eczar',
            fontSize: 40,
            fontWeight: FontWeight.w400,
            letterSpacing: 1.4,
          ),
          button: base.button.copyWith(
            fontFamily: 'Roboto Condensed',
            fontWeight: FontWeight.w700,
            letterSpacing: 2.8,
          ),
          headline: base.body2.copyWith(
            fontFamily: 'Eczar',
            fontSize: 40,
            fontWeight: FontWeight.w600,
            letterSpacing: 1.4,
          ),
        )
        .apply(
          displayColor: Colors.white,
          bodyColor: Colors.white,
        );
  }
}