com.unity.uiwidgets/Samples/UIWidgetsSamples_2019_4/Assets/UIWidgetsGallery/demo/shrine/app.cs

using System;
using UIWidgetsGallery.demo.shrine;
using UIWidgetsGallery.demo.shrine.supplemental;
using Unity.UIWidgets.animation;
using Unity.UIWidgets.material;
using Unity.UIWidgets.ui;
using Unity.UIWidgets.widgets;

namespace UIWidgetsGallery.demo.shrine
{

    public class appUtils
    {
        public static Route _getRoute(RouteSettings settings) {
            if (settings.name != "/login") {
                return null;
            }

            return new MaterialPageRoute(
                settings: settings,
                builder: (BuildContext context) => new LoginPage(),
                fullscreenDialog: true
            );
        }

        public static readonly ThemeData _kShrineTheme =  _buildShrineTheme();

        static IconThemeData _customIconTheme(IconThemeData original) {
            return original.copyWith(color: shrineColorsUtils.kShrineBrown900);
        }

        static ThemeData _buildShrineTheme() {
            ThemeData _base = ThemeData.light();
            return _base.copyWith(
                colorScheme: kShrineColorScheme,
                accentColor: shrineColorsUtils.kShrineBrown900,
                primaryColor: shrineColorsUtils.kShrinePink100,
                buttonColor: shrineColorsUtils.kShrinePink100,
                scaffoldBackgroundColor: shrineColorsUtils.kShrineBackgroundWhite,
                cardColor: shrineColorsUtils.kShrineBackgroundWhite,
                textSelectionColor: shrineColorsUtils.kShrinePink100,
                errorColor: shrineColorsUtils.kShrineErrorRed,
                buttonTheme: new ButtonThemeData(
                  colorScheme: kShrineColorScheme,
                  textTheme: ButtonTextTheme.normal
                ),
                primaryIconTheme: _customIconTheme(_base.iconTheme),
                inputDecorationTheme: new InputDecorationTheme(border: new CutCornersBorder()),
                textTheme: _buildShrineTextTheme(_base.textTheme),
                primaryTextTheme: _buildShrineTextTheme(_base.primaryTextTheme),
                accentTextTheme: _buildShrineTextTheme(_base.accentTextTheme),
                iconTheme: _customIconTheme(_base.iconTheme)
            );
        }

        static TextTheme _buildShrineTextTheme(TextTheme _base) {
            return _base.copyWith(
                headline5: _base.headline5.copyWith(fontWeight: FontWeight.w500),
                headline6: _base.headline6.copyWith(fontSize: 18.0f),
                caption: _base.caption.copyWith(fontWeight: FontWeight.w400, fontSize: 14.0f),
                bodyText1: _base.bodyText1.copyWith(fontWeight: FontWeight.w500, fontSize: 16.0f),
                button: _base.button.copyWith(fontWeight: FontWeight.w500, fontSize: 14.0f)
            ).apply(
                fontFamily: "Raleway",
                displayColor: shrineColorsUtils.kShrineBrown900,
                bodyColor: shrineColorsUtils.kShrineBrown900
            );
        }
        
        static ColorScheme kShrineColorScheme = new ColorScheme(
            primary: shrineColorsUtils.kShrinePink100,
            primaryVariant: shrineColorsUtils.kShrineBrown900,
            secondary: shrineColorsUtils.kShrinePink50,
            secondaryVariant: shrineColorsUtils.kShrineBrown900,
            surface: shrineColorsUtils.kShrineSurfaceWhite,
            background: shrineColorsUtils.kShrineBackgroundWhite,
            error: shrineColorsUtils.kShrineErrorRed,
            onPrimary: shrineColorsUtils.kShrineBrown900,
            onSecondary: shrineColorsUtils.kShrineBrown900,
            onSurface: shrineColorsUtils.kShrineBrown900,
            onBackground: shrineColorsUtils.kShrineBrown900,
            onError: shrineColorsUtils.kShrineSurfaceWhite,
            brightness: Brightness.light
        );
        
        
    }
    public class ShrineApp : StatefulWidget {
        public override State createState() => new _ShrineAppState();
    }

    public class _ShrineAppState : SingleTickerProviderStateMixin<ShrineApp> {
  
        AnimationController _controller;
      
        public override void initState() {
            base.initState();
            _controller = new AnimationController(
                vsync: this,
                duration: TimeSpan.FromMilliseconds(450),
                value: 1.0f
            );
        }

  
        public override Widget build(BuildContext context) {
            return new MaterialApp(
                title: "Shrine",
                home: new HomePage(
                    backdrop: new Backdrop(
                    frontLayer: new ProductPage(),
                    backLayer: new CategoryMenuPage(onCategoryTap: () => _controller.forward()),
                    frontTitle: new Text("SHRINE"),
                    backTitle: new Text("MENU"),
                    controller: _controller
                    ),
                expandingBottomSheet: new ExpandingBottomSheet(hideController: _controller)
                ),
            initialRoute: "/login",
            onGenerateRoute: appUtils._getRoute,
            theme: appUtils._kShrineTheme.copyWith(platform: Theme.of(context).platform)
            );
        }
    }

    

    

}