pubspec.yaml

name: roulettewheeleurope
description: "Roulette Wheel Europe"
# The following line prevents the package from being accidentally published to
# pub.dev using `flutter pub publish`. This is preferred for private packages.
publish_to: 'none' # Remove this line if you wish to publish to pub.dev

# The following defines the version and build number for your application.
# A version number is three numbers separated by dots, like 1.2.43
# followed by an optional build number separated by a +.
# Both the version and the builder number may be overridden in flutter
# build by specifying --build-name and --build-number, respectively.
# In Android, build-name is used as versionName while build-number used as versionCode.
# Read more about Android versioning at https://developer.android.com/studio/publish/versioning
# In iOS, build-name is used as CFBundleShortVersionString while build-number is used as CFBundleVersion.
# Read more about iOS versioning at
# https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
# In Windows, build-name is used as the major, minor, and patch parts
# of the product and file versions while build-number is used as the build suffix.
version: 2.0.1+17

environment:
  sdk: ">=3.3.0 <4.0.0"

# Dependencies specify other packages that your package needs in order to work.
# To automatically upgrade your package dependencies to the latest versions
# consider running `flutter pub upgrade --major-versions`. Alternatively,
# dependencies can be manually updated by changing the version numbers below to
# the latest version available on pub.dev. To see which dependencies have newer
# versions available, run `flutter pub outdated`.
dependencies:
  flutter:
    sdk: flutter
  flutter_localizations:
    sdk: flutter
  intl: ^0.20.2               #flutter gen-l10n
  shared_preferences: ^2.5.3
  flutter_tts: ^4.2.3
  google_mobile_ads: ^6.0.0
  audioplayers: ^6.0.0

  # The following adds the Cupertino Icons font to your application.
  # Use with the CupertinoIcons class for iOS style icons.
  cupertino_icons: ^1.0.8

dev_dependencies:
  flutter_test:
    sdk: flutter

  flutter_launcher_icons: ^0.14.4    #flutter pub run flutter_launcher_icons
  flutter_native_splash: ^2.4.0     #flutter pub run flutter_native_splash:create

  # The "flutter_lints" package below contains a set of recommended lints to
  # encourage good coding practices. The lint set provided by the package is
  # activated in the `analysis_options.yaml` file located at the root of your
  # package. See that file for information about deactivating specific lint
  # rules and activating additional ones.
  flutter_lints: ^6.0.0

flutter_icons:
  android: "launcher_icon"
  ios: true
  image_path: "assets/icon/icon.png"
  adaptive_icon_background: "assets/icon/icon_back.png"
  adaptive_icon_foreground: "assets/icon/icon_fore.png"

flutter_native_splash:
  color: '#9da9f5'
  image: 'assets/image/splash.png'
  color_dark: '#9da9f5'
  image_dark: 'assets/image/splash.png'
  fullscreen: true
  android_12:
    icon_background_color: '#9da9f5'
    image: 'assets/image/splash.png'
    icon_background_color_dark: '#9da9f5'
    image_dark: 'assets/image/splash.png'


# For information on the generic Dart part of this file, see the
# following page: https://dart.dev/tools/pub/pubspec

# The following section is specific to Flutter packages.
flutter:
  generate: true

  # The following line ensures that the Material Icons font is
  # included with your application, so that you can use the icons in
  # the material Icons class.
  uses-material-design: true

  # To add assets to your application, add an assets section, like this:
  # assets:
  #   - images/a_dot_burr.jpeg
  #   - images/a_dot_ham.jpeg

  assets:
    - assets/icon/
    - assets/image/
    - assets/sound/

  # An image asset can refer to one or more resolution-specific "variants", see
  # https://flutter.dev/to/resolution-aware-images

  # For details regarding adding assets from package dependencies, see
  # https://flutter.dev/to/asset-from-package

  # To add custom fonts to your application, add a fonts section here,
  # in this "flutter" section. Each entry in this list should have a
  # "family" key with the font family name, and a "fonts" key with a
  # list giving the asset and other descriptors for the font. For
  # example:
  # fonts:
  #   - family: Schyler
  #     fonts:
  #       - asset: fonts/Schyler-Regular.ttf
  #       - asset: fonts/Schyler-Italic.ttf
  #         style: italic
  #   - family: Trajan Pro
  #     fonts:
  #       - asset: fonts/TrajanPro.ttf
  #       - asset: fonts/TrajanPro_Bold.ttf
  #         weight: 700
  #
  # For details regarding fonts from package dependencies,
  # see https://flutter.dev/to/font-from-package

lib/ad_banner_widget.dart

import 'package:flutter/cupertino.dart';
import 'package:google_mobile_ads/google_mobile_ads.dart';

import 'package:roulettewheeleurope/ad_manager.dart';

class AdBannerWidget extends StatefulWidget {
  final AdManager adManager;
  const AdBannerWidget({super.key, required this.adManager});
  @override
  State<AdBannerWidget> createState() => _AdBannerWidgetState();
}

class _AdBannerWidgetState extends State<AdBannerWidget> {
  int _lastBannerWidthDp = 0;
  bool _isAdLoaded = false;
  bool _isLoading = false;
  @override
  Widget build(BuildContext context) {
    return SafeArea(
      child: LayoutBuilder(
        builder: (context, constraints) {
          final int width = constraints.maxWidth.isFinite ? constraints.maxWidth.truncate() : MediaQuery.of(context).size.width.truncate();
          final bannerAd = widget.adManager.bannerAd;
          if (width > 0) {
            WidgetsBinding.instance.addPostFrameCallback((_) {
              if (mounted) {
                final bannerAd = widget.adManager.bannerAd;
                final bool widthChanged = _lastBannerWidthDp != width;
                final bool sizeMismatch = bannerAd == null || bannerAd.size.width != width;
                if ((widthChanged || !_isAdLoaded || sizeMismatch) && !_isLoading) {
                  _lastBannerWidthDp = width;
                  setState(() { _isAdLoaded = false; _isLoading = true; });
                  widget.adManager.loadAdaptiveBannerAd(width, () {
                    if (mounted) {
                      setState(() { _isAdLoaded = true; _isLoading = false; });
                    }
                  });
                }
              }
            });
          }
          if (_isAdLoaded && bannerAd != null) {
            return Row(
              mainAxisAlignment: MainAxisAlignment.center,
              children: [
                SizedBox(
                  width: bannerAd.size.width.toDouble(),
                  height: bannerAd.size.height.toDouble(),
                  child: AdWidget(ad: bannerAd),
                ),
              ],
            );
          } else {
            return const SizedBox.shrink();
          }
        },
      ),
    );
  }
}

lib/ad_manager.dart

import 'dart:async';
import 'dart:io' show Platform;
import 'dart:ui';
import 'package:google_mobile_ads/google_mobile_ads.dart';

class AdManager {
  // Test IDs
  // static const String _androidAdUnitId = "ca-app-pub-3940256099942544/6300978111";
  // static const String _iosAdUnitId     = "ca-app-pub-3940256099942544/2934735716";

  // Production IDs
  static const String _androidAdUnitId = "ca-app-pub-0/0";
  static const String _iosAdUnitId     = "ca-app-pub-0/0";

  static String get _adUnitId => Platform.isIOS ? _iosAdUnitId : _androidAdUnitId;

  BannerAd? _bannerAd;
  int _lastWidthPx = 0;
  VoidCallback? _onLoadedCb;
  Timer? _retryTimer;
  int _retryAttempt = 0;

  BannerAd? get bannerAd => _bannerAd;

  Future<void> loadAdaptiveBannerAd(int widthPx, VoidCallback onAdLoaded) async {
    _onLoadedCb = onAdLoaded;
    _lastWidthPx = widthPx;
    _retryAttempt = 0;
    _retryTimer?.cancel();
    _startLoad(widthPx);
  }

  Future<void> _startLoad(int widthPx) async {
    _bannerAd?.dispose();

    AnchoredAdaptiveBannerAdSize? adaptiveSize;
    try {
      adaptiveSize = await AdSize.getCurrentOrientationAnchoredAdaptiveBannerAdSize(widthPx);
    } catch (_) {
      adaptiveSize = null;
    }
    final AdSize size = adaptiveSize ?? AdSize.fullBanner;

    _bannerAd = BannerAd(
      adUnitId: _adUnitId,
      request: const AdRequest(),
      size: size,
      listener: BannerAdListener(
        onAdLoaded: (ad) {
          _retryTimer?.cancel();
          _retryAttempt = 0;
          final cb = _onLoadedCb;
          if (cb != null) {
            cb();
          }
        },
        onAdFailedToLoad: (ad, err) {
          ad.dispose();
          _scheduleRetry();
        },
      ),
    )..load();
  }

  void _scheduleRetry() {
    _retryTimer?.cancel();
    // Exponential backoff: 3s, 6s, 12s, max 30s
    _retryAttempt = (_retryAttempt + 1).clamp(1, 5);
    final seconds = _retryAttempt >= 4 ? 30 : (3 << (_retryAttempt - 1));
    _retryTimer = Timer(Duration(seconds: seconds), () {
      _startLoad(_lastWidthPx > 0 ? _lastWidthPx : 320);
    });
  }

  void dispose() {
    _bannerAd?.dispose();
    _retryTimer?.cancel();
  }

}

lib/color_utils.dart

import 'package:flutter/material.dart';

// Maps roulette result codes to Colors.
// Codes: 'g' (green), 'k' (black), 'r' (red)
Color colorFromCode(String code) {
  switch (code) {
    case 'g':
      return const Color(0xFF00BB00);
    case 'k':
      return const Color(0xFF222222);
    case 'r':
      return const Color(0xFFD00000);
    default:
      return Colors.transparent;
  }
}

lib/const_value.dart

class ConstValue {
  static const String settings = "settings";
  static const String speechNumber = "speechNumber"; // 0 or 1
  static const String shortNumber = "shortNumber"; // 0..9
  static const String themeNumber = "themeNumber"; // 0 light, 1 dark
  static const String localeLanguage = "localeLanguage"; // "en", "ja", ... or ""
  static const String countdownNumber = "countdownNumber"; // 0 off, 1 on
  static const String soundVolume = "soundVolume"; // 0..10
  static const String speechVolume = "speechVolume"; // 0..10
  static const String voiceId = "voiceId"; // "<locale>|<name>"
}

lib/main.dart

import 'package:flutter/material.dart';
import 'package:google_mobile_ads/google_mobile_ads.dart';
import 'l10n/app_localizations.dart';

import 'package:roulettewheeleurope/roulette_home.dart';


Future<void> main() async {
  WidgetsFlutterBinding.ensureInitialized();
  await MobileAds.instance.initialize();
  runApp(const RouletteWheelApp());
}

class RouletteWheelApp extends StatefulWidget {
  const RouletteWheelApp({super.key});
  @override
  State<RouletteWheelApp> createState() => _RouletteWheelAppState();
}

class _RouletteWheelAppState extends State<RouletteWheelApp> {
  ThemeMode _themeMode = ThemeMode.light;
  Locale? _locale;
  void updateThemeAndLocale({required int themeNumber, required String localeLanguage}) {
    setState(() {
      // 0: system, 1: light, 2: dark
      switch (themeNumber) {
        case 2:
          _themeMode = ThemeMode.dark;
          break;
        case 1:
          _themeMode = ThemeMode.light;
          break;
        default:
          _themeMode = ThemeMode.system;
      }
      _locale = _localeFromTag(localeLanguage);
    });
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      title: 'Roulette Wheel',
      themeMode: _themeMode,
      theme: ThemeData(colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple), useMaterial3: true),
      darkTheme: ThemeData.dark(useMaterial3: true),
      locale: _locale,
      localizationsDelegates: AppLocalizations.localizationsDelegates,
      supportedLocales: AppLocalizations.supportedLocales,
      home: RouletteHome(onUpdateApp: updateThemeAndLocale),
    );
  }
}

Locale? _localeFromTag(String tag) {
  if (tag.isEmpty) {
    return null;
  }
  final parts = tag.split('-');
  final lang = parts.isNotEmpty ? parts[0] : 'en';
  String? script;
  String? country;
  if (parts.length >= 2) {
    final p1 = parts[1];
    if (p1.length == 4) {
      script = p1;
    } else {
      country = p1;
    }
  }
  if (parts.length >= 3) {
    final p2 = parts[2];
    if (p2.length == 4) {
      script = p2;
    } else {
      country = p2;
    }
  }
  return Locale.fromSubtags(languageCode: lang, scriptCode: script, countryCode: country);
}

lib/roulette_home.dart

import 'dart:async';
import 'dart:io' show Platform;
import 'dart:math' as math;

import 'package:flutter/material.dart';
import 'package:flutter_tts/flutter_tts.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'package:audioplayers/audioplayers.dart';
import 'l10n/app_localizations.dart';

import 'package:roulettewheeleurope/const_value.dart';
import 'package:roulettewheeleurope/setting_page.dart';
import 'package:roulettewheeleurope/wheel_view.dart';
import 'package:roulettewheeleurope/ad_manager.dart';
import 'package:roulettewheeleurope/ad_banner_widget.dart';
import 'package:roulettewheeleurope/color_utils.dart';


class RouletteHome extends StatefulWidget {
  final void Function({required int themeNumber, required String localeLanguage}) onUpdateApp;
  const RouletteHome({super.key, required this.onUpdateApp});
  @override
  State<RouletteHome> createState() => _RouletteHomeState();
}

class _RouletteHomeState extends State<RouletteHome> {
  late AdManager _adManager;

  // UI
  bool _startUiVisible = true;
  bool _settingUiVisible = true;
  // UI mirror state for Flutter-native wheel
  double _uiWheelAngle = 0;
  double _uiBallLeft = 0;
  double _uiBallTop = 0;
  double _uiBallSize = 0;
  bool _uiBallVisible = false;
  double _uiAlphaThree = 0;
  double _uiAlphaTwo = 0;
  double _uiAlphaOne = 0;
  double _uiAlphaNoMoreBets = 0;
  double _uiAlphaResult = 0;
  String _uiResultText = '';
  String _uiResultColor = '';
  final List<_HistoryItem> _history = <_HistoryItem>[];
  // TTS
  final FlutterTts _tts = FlutterTts();
  List<Map> _voices = [];
  // SFX
  final AudioPlayer _audio = AudioPlayer();

  // Prefs / settings
  int speechNumber = 1;
  int shortNumber = 0; // 0..9
  int themeNumber = 0; // 0 light, 1 dark
  String localeLanguage = ""; // empty = system
  int countdownNumber = 1; // 1 on, 0 off
  int speechVolume = 10; // 0..10
  int soundVolume = 10; // 0..10
  String voiceId = ""; // "<locale>|<name>"

  // Wheel logic
  double baseSize = 0; // logical size of square wheel area (in px)
  double wheelAngle = 360;
  double ballAngle = 0;
  double wheelAngleStart = 0;
  bool ballRotateFlag = false;
  int ballTick = 0;
  double adjustAngle = 0;
  double ballDistanceRatio = _ballDistanceStart;
  bool busy = false;
  Timer? _timer;

  static const double _ballSizeRatio = 0.04; // 4% of wheel diameter
  static const double _ballDistanceStart = 0.89;
  static const double _ballDistanceEnd = 0.535;

  static const List<_RouletteSlot> _slots = [
    _RouletteSlot("0", "g"),
    _RouletteSlot("32", "r"),
    _RouletteSlot("15", "k"),
    _RouletteSlot("19", "r"),
    _RouletteSlot("4", "k"),
    _RouletteSlot("21", "r"),
    _RouletteSlot("2", "k"),
    _RouletteSlot("25", "r"),
    _RouletteSlot("17", "k"),
    _RouletteSlot("34", "r"),
    _RouletteSlot("6", "k"),
    _RouletteSlot("27", "r"),
    _RouletteSlot("13", "k"),
    _RouletteSlot("36", "r"),
    _RouletteSlot("11", "k"),
    _RouletteSlot("30", "r"),
    _RouletteSlot("8", "k"),
    _RouletteSlot("23", "r"),
    _RouletteSlot("10", "k"),
    _RouletteSlot("5", "r"),
    _RouletteSlot("24", "k"),
    _RouletteSlot("16", "r"),
    _RouletteSlot("33", "k"),
    _RouletteSlot("1", "r"),
    _RouletteSlot("20", "k"),
    _RouletteSlot("14", "r"),
    _RouletteSlot("31", "k"),
    _RouletteSlot("9", "r"),
    _RouletteSlot("22", "k"),
    _RouletteSlot("18", "r"),
    _RouletteSlot("29", "k"),
    _RouletteSlot("7", "r"),
    _RouletteSlot("28", "k"),
    _RouletteSlot("12", "r"),
    _RouletteSlot("35", "k"),
    _RouletteSlot("3", "r"),
    _RouletteSlot("26", "k"),
  ];

  @override
  void initState() {
    super.initState();
    _adManager = AdManager();
    _loadPrefs();
    _initTts();
    _initAudio();
    _startTicker();
  }

  @override
  void dispose() {
    _adManager.dispose();
    _audio.dispose();
    _timer?.cancel();
    super.dispose();
  }

  Future<void> _initAudio() async {
    await _audio.setReleaseMode(ReleaseMode.stop);
    await _audio.setVolume((soundVolume.clamp(0, 10)) / 10.0);
    // Preload source once to avoid per-play asset resolution/IO
    try {
      await _audio.setSource(AssetSource('sound/kachi.wav'));  //assets/は不要
    } catch (_) {}
  }

  Future<void> _initTts() async {
    try {
      final v = await _tts.getVoices; // returns List<dynamic>
      if (v is List) {
        _voices = v.cast<Map>();
        setState(() {});
      }
    } catch (_) {}
    unawaited(_setSpeechVoiceFromId());
    try {
      await _tts.setVolume((speechVolume.clamp(0, 10)) / 10.0);
    } catch (_) {}
  }

  Future<void> _loadPrefs() async {
    final pref = await SharedPreferences.getInstance();
    speechNumber = pref.getInt(ConstValue.speechNumber) ?? 1;
    voiceId = pref.getString(ConstValue.voiceId) ?? '';
    shortNumber = pref.getInt(ConstValue.shortNumber) ?? 0;
    themeNumber = pref.getInt(ConstValue.themeNumber) ?? 0;
    localeLanguage = pref.getString(ConstValue.localeLanguage) ?? "";
    countdownNumber = pref.getInt(ConstValue.countdownNumber) ?? 1;
    speechVolume = pref.getInt(ConstValue.speechVolume) ?? 10;
    soundVolume = pref.getInt(ConstValue.soundVolume) ?? 10;
    widget.onUpdateApp(themeNumber: themeNumber, localeLanguage: localeLanguage);
    setState(() {});
    try {
      await _tts.setVolume((speechVolume.clamp(0, 10)) / 10.0);
      await _audio.setVolume((soundVolume.clamp(0, 10)) / 10.0);
    } catch (_) {}
  }

  Future<void> _saveSpeechNumber() async {
    final pref = await SharedPreferences.getInstance();
    await pref.setInt(ConstValue.speechNumber, speechNumber);
  }

  Future<void> _saveVoiceId() async {
    final pref = await SharedPreferences.getInstance();
    await pref.setString(ConstValue.voiceId, voiceId);
  }

  Future<void> _saveShortNumber() async {
    final pref = await SharedPreferences.getInstance();
    await pref.setInt(ConstValue.shortNumber, shortNumber);
  }

  Future<void> _saveThemeNumber() async {
    final pref = await SharedPreferences.getInstance();
    await pref.setInt(ConstValue.themeNumber, themeNumber);
  }

  Future<void> _saveLocaleLanguage() async {
    final pref = await SharedPreferences.getInstance();
    await pref.setString(ConstValue.localeLanguage, localeLanguage);
  }

  Future<void> _saveCountdownNumber() async {
    final pref = await SharedPreferences.getInstance();
    await pref.setInt(ConstValue.countdownNumber, countdownNumber);
  }

  Future<void> _saveSoundVolume() async {
    final pref = await SharedPreferences.getInstance();
    await pref.setInt(ConstValue.soundVolume, soundVolume);
  }

  Future<void> _saveSpeechVolume() async {
    final pref = await SharedPreferences.getInstance();
    await pref.setInt(ConstValue.speechVolume, speechVolume);
  }

  Future<void> _setSpeechVoiceFromId() async {
    if (_voices.isEmpty || voiceId.isEmpty) return;
    final idx = voiceId.indexOf('|');
    String selLocale = '';
    String selName = voiceId;
    if (idx >= 0) {
      selLocale = voiceId.substring(0, idx);
      selName = voiceId.substring(idx + 1);
    }
    Map? match;
    if (selLocale.isNotEmpty) {
      match = _voices.cast<Map?>().firstWhere(
        (e) => (e?['name']?.toString() ?? '') == selName && (e?['locale']?.toString() ?? '') == selLocale,
        orElse: () => null,
      );
    }
    match ??= _voices.cast<Map?>().firstWhere(
      (e) => (e?['name']?.toString() ?? '') == selName,
      orElse: () => null,
    );
    if (match != null) {
      final locale = (match['locale']?.toString() ?? selLocale);
      final name = (match['name']?.toString() ?? selName);
      try {
        if (Platform.isAndroid) {
          // Prefer Google TTS if available; ignore errors if not installed
          try { await _tts.setEngine('com.google.android.tts'); } catch (_) {}
          if (locale.isNotEmpty) { await _tts.setLanguage(locale); }
          await _tts.setVoice({'name': name, 'locale': locale});
        } else if (Platform.isIOS) {
          // On iOS, setting voice is sufficient; avoid setLanguage overriding the voice
          await _tts.setVoice({'name': name, 'locale': locale});
        } else {
          // Fallback for other platforms
          if (locale.isNotEmpty) { await _tts.setLanguage(locale); }
          await _tts.setVoice({'name': name, 'locale': locale});
        }
      } catch (_) {}
    }
  }

  void _startTicker() {
    _timer = Timer.periodic(const Duration(milliseconds: 25), (_) {
      // wheel rotation
      wheelAngle -= 0.5;
      if (wheelAngle < 0) {
        wheelAngle = 359.5;
      }
      _setWheelRotation(wheelAngle);

      if (ballRotateFlag) {
        adjustAngle += 0.5;
        ballAngle += 5;
        if (ballAngle >= 360) {
          ballAngle = 0;
        }

        if (ballTick > 0) {
          ballTick -= 1;
          if (ballTick == 500) {
            if (countdownNumber == 1) {
              _showOverlay(three: 0.8);
              if (speechNumber == 1) {
                _speak("3");
              }
            }
          }
          if (ballTick == 450) {
            if (countdownNumber == 1) {
              _showOverlay(three: 0.0, two: 0.8);
              if (speechNumber == 1) {
                _speak("2");
              }
            }
          }
          if (ballTick == 400) {
            if (countdownNumber == 1) {
              _showOverlay(two: 0.0, one: 0.8);
              if (speechNumber == 1) {
                _speak("1");
              }
            }
          }
          if (ballTick == 350) {
            _showOverlay(one: 0.0, noMoreBets: 0.8);
            _speak(_localizedNoMoreBets());
          }
          if (ballTick == 250) {
            _showOverlay(noMoreBets: 0.0);
            ballTick -= (math.Random().nextDouble() * 100).toInt();
          }
          if (ballTick < 5) {
            ballDistanceRatio = (_ballDistanceStart + _ballDistanceEnd) / 2;
          }
          if (ballTick < 1) {
            ballDistanceRatio = _ballDistanceEnd;
          }
          if (ballTick <= 0) {
            ballRotateFlag = false;
            _setStartUiVisible(true);
            _resultNumber();
            busy = false;
            _playPocketSound();
            Future.delayed(const Duration(milliseconds: 800), () {
              _speak(_speakTextForNumber(_uiResultText));
            });
          }
        }
      }
      _ballPosition();
    });
  }

  String _localizedNoMoreBets() => AppLocalizations.of(context)?.noMoreBets ?? 'no more bets';

  void _speak(String text) {
    if (speechNumber == 1) {
      _tts.speak(text);
    }
  }

  void _onStart() {
    if (busy) {
      return;
    }
    busy = true;
    _setStartUiVisible(false);
    _showOverlay(resultAlpha: 0.0);
    ballAngle = 0;
    _setBallVisible(true);
    ballDistanceRatio = _ballDistanceStart;
    wheelAngleStart = wheelAngle;
    ballTick = (10 - shortNumber) * 100 + 260; // 1260..360
    adjustAngle = 0;
    ballRotateFlag = true;
  }

  void _resultNumber() {
    double angle = ballAngle;
    angle = ((angle - wheelAngleStart + adjustAngle) / (360 / 37)).toInt() * (360 / 37) + (180 / 37);
    angle = 180 - angle + 0.5;
    angle += 3600;
    angle %= 360;
    int num = 37 - (angle / (360 / 37)).toInt();
    num %= 37;
    final slot = _slots[num];
    final resultNumber = slot.number;
    final resultColor = slot.color;
    _setResult(number: resultNumber, color: resultColor);
    _showOverlay(resultAlpha: 1.0);
    _addHistory(resultNumber, resultColor);
  }

  String _speakTextForNumber(String number) {
    if (number == '00') {
      return 'double zero';
    }
    return number;
  }

  void _addHistory(String number, String color) {
    setState(() {
      _history.insert(0, _HistoryItem(number, color));
      if (_history.length > 20) {
        _history.removeLast();
      }
    });
  }

  Future<void> _playPocketSound() async {
    final vol = soundVolume.clamp(0, 10) / 10.0;
    if (vol <= 0) return;
    try {
      await _audio.setVolume(vol);
      // Restart from beginning without reloading the asset
      await _audio.seek(Duration.zero);
      unawaited(_audio.resume());
    } catch (_) {
      // Fallback: try a direct play if preloading failed
      try {
        await _audio.stop();
        await _audio.play(AssetSource('sound/kachi.wav'));  //assets/は不要
      } catch (_) {}
    }
  }

  Widget _buildHistoryList() {
    if (_history.isEmpty) {
      return SizedBox.shrink();
    }
    return ListView.separated(
      reverse: false,
      itemCount: _history.length,
      separatorBuilder: (_, __) => const SizedBox(height: 1),
      itemBuilder: (context, index) {
        final item = _history[index];
        return Container(
          height: 19,
          decoration: BoxDecoration(
            color: colorFromCode(item.color),
            borderRadius: BorderRadius.circular(20),
          ),
          alignment: Alignment.center,
          child: Text(
            item.number,
            style: const TextStyle(color: Colors.white, fontSize: 16),
          ),
        );
      },
    );
  }

  void _ballPosition() {
    if (baseSize <= 0) {
      return;
    }
    final ballSize = baseSize * _ballSizeRatio;
    _setBallSize(ballSize.toInt());
    double angle = ballAngle;
    if (!ballRotateFlag) {
      angle = ((angle - wheelAngleStart + adjustAngle) / (360 / 37)).toInt() * (360 / 37) + (180 / 37);
      angle += wheelAngle;
    }
    double x = (-math.sin(angle * (math.pi / 180)) * (baseSize / 2));
    double y = (math.cos(angle * (math.pi / 180)) * (baseSize / 2));
    x *= ballDistanceRatio;
    y *= ballDistanceRatio;
    x += baseSize / 2.0 * 0.89;
    y += baseSize / 2.0 * 0.89;
    x += ballSize * 0.9;
    y += ballSize * 0.9;
    _setBallPosition(x.toInt(), y.toInt());
  }

  // Channel helpers
  Future<void> _setWheelRotation(double angle) async {
    setState(() {
      _uiWheelAngle = angle;
    });
  }

  Future<void> _setBallPosition(int x, int y) async {
    setState(() {
      _uiBallLeft = x.toDouble();
      _uiBallTop = y.toDouble();
    });
  }

  Future<void> _setBallSize(int sizePx) async {
    setState(() {
      _uiBallSize = sizePx.toDouble();
    });
  }

  Future<void> _setBallVisible(bool visible) async {
    setState(() {
      _uiBallVisible = visible;
    });
  }

  Future<void> _showOverlay({double? three, double? two, double? one, double? noMoreBets, double? resultAlpha}) async {
    setState(() {
      if (three != null) { _uiAlphaThree = three; }
      if (two != null) { _uiAlphaTwo = two; }
      if (one != null) { _uiAlphaOne = one; }
      if (noMoreBets != null) { _uiAlphaNoMoreBets = noMoreBets; }
      if (resultAlpha != null) { _uiAlphaResult = resultAlpha; }
    });
  }

  Future<void> _setResult({required String number, required String color}) async {
    setState(() {
      _uiResultText = number;
      _uiResultColor = color;
    });
  }

  void _setStartUiVisible(bool on) {
    setState(() {
      _startUiVisible = on;
      _settingUiVisible = on;
    });
  }

  @override
  Widget build(BuildContext context) {
    final bgColor = (themeNumber == 2) ? Color.fromARGB(255, 20,40,30) : Color.fromARGB(255, 50,130,60);
    return Scaffold(
      backgroundColor: bgColor,
      body: SafeArea(
        child: Column(
          children: [
            Row(children: [
              const Spacer(),
              Padding(
                padding: const EdgeInsets.only(right: 10),
                child: IconButton(
                  onPressed: _settingUiVisible ? _onTapSetting : null,
                  tooltip: AppLocalizations.of(context)!.setting,
                  icon: Icon(Icons.settings, color: Colors.white.withValues(alpha: _settingUiVisible ? 0.85 : 0)),
                ),
              ),
            ]),
            const SizedBox(height: 5),
            Expanded(
              child: LayoutBuilder(
                builder: (context, constraints) {
                  final paddingH = 10.0;
                  final width = constraints.maxWidth - paddingH * 2;
                  baseSize = width;
                  return SingleChildScrollView(
                    child: Padding(
                      padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 10),
                      child: Column(
                        children: [
                          AspectRatio(
                            aspectRatio: 1,
                            child: Center(
                              child: WheelFlutterView(
                                size: width,
                                wheelAngleDeg: _uiWheelAngle,
                                ballVisible: _uiBallVisible,
                                ballLeft: _uiBallLeft,
                                ballTop: _uiBallTop,
                                ballSize: _uiBallSize,
                                alphaThree: _uiAlphaThree,
                                alphaTwo: _uiAlphaTwo,
                                alphaOne: _uiAlphaOne,
                                alphaNoMoreBets: _uiAlphaNoMoreBets,
                                alphaResult: _uiAlphaResult,
                                resultText: _uiResultText,
                                resultColor: _uiResultColor,
                              ),
                            ),
                          ),
                          const SizedBox(height: 20),
                          Stack(
                            children: [
                              Align(
                                alignment: Alignment.centerLeft,
                                child: SizedBox(
                                  width: 60,
                                  height: 200,
                                  child: _buildHistoryList(),
                                ),
                              ),
                              Align(
                                alignment: Alignment.center,
                                child: AnimatedOpacity(
                                  duration: const Duration(milliseconds: 300),
                                  opacity: _startUiVisible ? 1.0 : 0.0,
                                  child: Opacity(
                                    opacity: busy ? 0.4 : 1.0,
                                    child: ElevatedButton(
                                      onPressed: busy ? null : _onStart,
                                      style: ElevatedButton.styleFrom(
                                        shape: const CircleBorder(),
                                        fixedSize: const Size(160, 160),
                                        backgroundColor: Colors.white.withValues(alpha: 0.25),
                                        foregroundColor: Colors.white,
                                        elevation: 0,
                                      ),
                                      child: FittedBox(
                                        fit: BoxFit.scaleDown,
                                        child: Padding(
                                          padding: const EdgeInsets.all(8.0),
                                          child: Text(
                                            AppLocalizations.of(context)!.start,
                                            textAlign: TextAlign.center,
                                            style: const TextStyle(color: Colors.white, fontSize: 28),
                                          ),
                                        ),
                                      ),
                                    ),
                                  ),
                                ),
                              )
                            ],
                          ),
                          const SizedBox(height: 200),
                        ],
                      ),
                    ),
                  );
                },
              ),
            ),
          ],
        ),
      ),
      bottomNavigationBar: AdBannerWidget(adManager: _adManager),
    );
  }

  Future<void> _onTapSetting() async {
    if (busy) {
      return;
    }
    final result = await Navigator.of(context).push(
      MaterialPageRoute(
        builder: (_) => SettingPage(
          speechNumber: speechNumber,
          shortNumber: shortNumber,
          themeNumber: themeNumber,
          localeLanguage: localeLanguage,
          countdownNumber: countdownNumber,
          speechVolume: speechVolume,
          soundVolume: soundVolume,
          voiceId: voiceId,
        ),
      ),
    );
    if (result is Map) {
      final lastSpeechNumber = speechNumber;
      speechNumber = (result[ConstValue.speechNumber] as int?) ?? 1;
      if (lastSpeechNumber != speechNumber) {
        await _saveSpeechNumber();
      }

      final lastVoiceId = voiceId;
      voiceId = (result[ConstValue.voiceId] as String?) ?? voiceId;
      if (lastVoiceId != voiceId) {
        await _saveVoiceId();
        await _setSpeechVoiceFromId();
      }

      final lastShortNumber = shortNumber;
      shortNumber = (result[ConstValue.shortNumber] as int?) ?? shortNumber;
      if (lastShortNumber != shortNumber) {
        await _saveShortNumber();
      }

      final lastTheme = themeNumber;
      themeNumber = (result[ConstValue.themeNumber] as int?) ?? themeNumber;
      if (lastTheme != themeNumber) {
        await _saveThemeNumber();
      }

      final lastLocale = localeLanguage;
      localeLanguage = (result[ConstValue.localeLanguage] as String?) ?? localeLanguage;
      if (lastLocale != localeLanguage) {
        await _saveLocaleLanguage();
      }

      final lastCountdown = countdownNumber;
      countdownNumber = (result[ConstValue.countdownNumber] as int?) ?? countdownNumber;
      if (lastCountdown != countdownNumber) {
        await _saveCountdownNumber();
      }

      final lastSoundVolume = soundVolume;
      soundVolume = (result[ConstValue.soundVolume] as int?) ?? soundVolume;
      if (lastSoundVolume != soundVolume) {
        await _saveSoundVolume();
        try {
          await _audio.setVolume((soundVolume.clamp(0, 10)) / 10.0);
        } catch (_) {}
      }

      final lastSpeechVolume = speechVolume;
      speechVolume = (result[ConstValue.speechVolume] as int?) ?? speechVolume;
      if (lastSpeechVolume != speechVolume) {
        await _saveSpeechVolume();
        try {
          await _tts.setVolume((speechVolume.clamp(0, 10)) / 10.0);
        } catch (_) {}
      }

      widget.onUpdateApp(themeNumber: themeNumber, localeLanguage: localeLanguage);
      setState(() {});
    }
  }
}

class _HistoryItem {
  final String number;
  final String color;
  _HistoryItem(this.number, this.color);
}

class _RouletteSlot {
  final String number;
  final String color;
  const _RouletteSlot(this.number, this.color);
}

lib/setting_page.dart

import 'package:flutter/material.dart';
import 'package:flutter_tts/flutter_tts.dart';
import 'l10n/app_localizations.dart';

import 'package:roulettewheeleurope/const_value.dart';
import 'package:roulettewheeleurope/ad_manager.dart';
import 'package:roulettewheeleurope/ad_banner_widget.dart';

class SettingPage extends StatefulWidget {
  final int speechNumber;
  final int shortNumber; // 0..9
  final int themeNumber; // 0 system, 1 light, 2 dark
  final String localeLanguage; // BCP-47 tag or ""
  final int countdownNumber; // 0 off, 1 on
  final int speechVolume; // 0..10
  final int soundVolume; // 0..10
  final String voiceId; // "<locale>|<name>"
  const SettingPage({
    super.key,
    required this.speechNumber,
    required this.shortNumber,
    required this.themeNumber,
    required this.localeLanguage,
    required this.countdownNumber,
    required this.speechVolume,
    required this.soundVolume,
    required this.voiceId,
  });
  @override
  State<SettingPage> createState() => _SettingPageState();
}

class _SettingPageState extends State<SettingPage> {
  late AdManager _adManager;
  late bool _speechOn;
  late int _shortNumber;
  late int _themeNumber; // 0 system, 1 light, 2 dark
  late String _languageCode; // BCP-47 tag or empty for system
  late bool _countdownOn;
  late int _speechVolume; // 0..10
  late int _soundVolume; // 0..10
  String _voiceId = '';
  List<_VoiceOption> _voices = [];
  final Map<String, String> _languageOptions = const {
    'en': 'English',
    'bg': 'Bulgarian',
    'cs': 'Čeština',
    'da': 'Dansk',
    'de': 'Deutsch',
    'el': 'Ελληνικά',
    'es': 'Español',
    'et': 'Eesti',
    'fi': 'Suomi',
    'fr': 'Français',
    'hu': 'Magyar',
    'id': 'Indonesia',
    'it': 'Italiano',
    'ja': '日本語',
    'ko': '한국어',
    'lt': 'Lietuvių',
    'lv': 'Latviešu',
    'nl': 'Nederlands',
    'no': 'Norsk',
    'pl': 'Polski',
    'pt': 'Português',
    'ro': 'Română',
    'ru': 'Русский',
    'sk': 'Slovenčina',
    'sv': 'Svenska',
    'th': 'ไทย',
    'tr': 'Türkçe',
    'uk': 'Українська',
    'vi': 'Tiếng Việt',
    'zh': '中文',
  };

  @override
  void initState() {
    super.initState();
    _adManager = AdManager();
    _speechOn = widget.speechNumber != 0;
    _shortNumber = widget.shortNumber;
    _themeNumber = {0, 1, 2}.contains(widget.themeNumber) ? widget.themeNumber : 0;
    _languageCode = widget.localeLanguage;
    _countdownOn = (widget.countdownNumber != 0);
    _speechVolume = widget.speechVolume;
    _soundVolume = widget.soundVolume;
    _voiceId = widget.voiceId;
    _loadVoices();
  }

  @override
  void dispose() {
    _adManager.dispose();
    super.dispose();
  }

  Future<void> _loadVoices() async {
    final tts = FlutterTts();
    try {
      final vs = await tts.getVoices;
      final List<_VoiceOption> voiceOptions = [];
      if (vs is List) {
        for (final v in vs) {
          if (v is Map && v['name'] is String && v['locale'] is String) {
            voiceOptions.add(_VoiceOption(v['locale'] as String, v['name'] as String));
          }
        }
      }
      voiceOptions.sort((a, b) => a.label.compareTo(b.label));
      setState(() {
        _voices = voiceOptions;
        // Ensure voiceId is valid; fallback to first
        if (_voices.isNotEmpty) {
          final exists = _voices.any((o) => o.id == _voiceId);
          if (!exists) {
            _voiceId = _voices.first.id;
          }
        }
      });
    } catch (_) {}
  }

  @override
  Widget build(BuildContext context) {
    final l = AppLocalizations.of(context)!;
    return Scaffold(
      backgroundColor: Theme.of(context).colorScheme.surface,
      appBar: AppBar(
        automaticallyImplyLeading: false,
        leading: IconButton(
          icon: const Icon(Icons.close),
          tooltip: l.cancel,
          onPressed: () => Navigator.of(context).pop(),
        ),
        title: null,
        actions: [
          Padding(
            padding: const EdgeInsets.only(right: 10),
            child: IconButton(
              onPressed: _onApply,
              tooltip: l.apply,
              icon: const Icon(Icons.check),
            ),
          ),
        ],
      ),
      body: SafeArea(
        child: Column(
          children: [
            Expanded(
              child: SingleChildScrollView(
                padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 20),
                child: Column(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: [
                    const SizedBox(height: 10),
                    _buildShortNumber(),
                    const Divider(height: 40, thickness: 1),
                    _buildCountdownSwitch(),
                    const Divider(height: 40, thickness: 1),
                    _buildSpeechSwitch(),
                    _buildSpeechVolume(),
                    _buildSpeechLanguage(),
                    const Divider(height: 40, thickness: 1),
                    _buildSoundVolume(),
                    const Divider(height: 40, thickness: 1),
                    _buildLanguage(),
                    const Divider(height: 40, thickness: 1),
                    _buildTheme(),
                    const Divider(height: 40, thickness: 1),
                    const SizedBox(height: 120),
                  ],
                ),
              ),
            ),
          ],
        ),
      ),
      bottomNavigationBar: AdBannerWidget(adManager: _adManager),
    );
  }

  void _onApply() {
    Navigator.of(context).pop({
      ConstValue.speechNumber: _speechOn ? 1 : 0,
      ConstValue.voiceId: _voiceId,
      ConstValue.shortNumber: _shortNumber,
      ConstValue.themeNumber: _themeNumber,
      ConstValue.localeLanguage: _languageCode,
      ConstValue.countdownNumber: _countdownOn ? 1 : 0,
      ConstValue.speechVolume: _speechVolume,
      ConstValue.soundVolume: _soundVolume,
    });
  }

  Widget _buildShortNumber() {
    final l = AppLocalizations.of(context)!;
    return Padding(
      padding: const EdgeInsets.symmetric(horizontal: 16),
      child: Row(children: [
        Expanded(child: Text(l.shortNumber,style: Theme.of(context).textTheme.bodyLarge)),
        SizedBox(
          child: Slider(
            min: 0,
            max: 10,
            divisions: 10,
            value: _shortNumber.toDouble(),
            label: _shortNumber.toString(),
            onChanged: (v) => setState(() => _shortNumber = v.round()),
          ),
        ),
        Text(
          _shortNumber.toInt().toString().padLeft(2, '0'),
          style: Theme.of(context).textTheme.titleMedium,
        )
      ])
    );
  }

  Widget _buildCountdownSwitch() {
    final l = AppLocalizations.of(context)!;
    return SwitchListTile(
      value: _countdownOn,
      onChanged: (v) => setState(() => _countdownOn = v),
      title: Text(l.countdown),
    );
  }

  Widget _buildSpeechSwitch() {
    final l = AppLocalizations.of(context)!;
    return SwitchListTile(
      value: _speechOn,
      onChanged: (v) => setState(() => _speechOn = v),
      title: Text(l.speechNumber),
    );
  }

  Widget _buildSpeechVolume() {
    final l = AppLocalizations.of(context)!;
    return Padding(
      padding: const EdgeInsets.symmetric(horizontal: 16),
      child: Row(children: [
        Expanded(child: Text(l.speechVolume, style: Theme.of(context).textTheme.bodyLarge)),
        SizedBox(
          child: Slider(
            min: 0,
            max: 10,
            divisions: 10,
            value: _speechVolume.toDouble(),
            label: _speechVolume.toString(),
            onChanged: (v) => setState(() => _speechVolume = v.round()),
          ),
        ),
        Text(
          _speechVolume.toInt().toString().padLeft(2, '0'),
          style: Theme.of(context).textTheme.titleMedium,
        )
      ])
    );
  }

  Widget _buildSpeechLanguage() {
    if (_voices.isEmpty) {
      return SizedBox.shrink();
    }
    return Padding(
      padding: const EdgeInsets.only(left: 16,right: 8),
      child: DropdownButtonFormField<String>(
        initialValue: () {
          if (_voiceId.isNotEmpty && _voices.any((o) => o.id == _voiceId)) {
            return _voiceId;
          }
          return _voices.first.id;
        }(),
        items: _voices
            .map((o) => DropdownMenuItem<String>(value: o.id, child: Text(o.label)))
            .toList(),
        onChanged: (v) {
          if (v == null) return;
          setState(() => _voiceId = v);
        },
      ),
    );
  }

  Widget _buildSoundVolume() {
    final l = AppLocalizations.of(context)!;
    return Padding(
      padding: const EdgeInsets.symmetric(horizontal: 16),
      child: Row(children: [
        Expanded(child: Text(l.soundVolume, style: Theme.of(context).textTheme.bodyLarge)),
        SizedBox(
          child: Slider(
            min: 0,
            max: 10,
            divisions: 10,
            value: _soundVolume.toDouble(),
            label: _soundVolume.toString(),
            onChanged: (v) => setState(() => _soundVolume = v.round()),
          ),
        ),
        Text(
          _soundVolume.toInt().toString().padLeft(2, '0'),
          style: Theme.of(context).textTheme.titleMedium)
      ])
    );
  }

  Widget _buildLanguage() {
    final l = AppLocalizations.of(context)!;
    return ListTile(
      contentPadding: const EdgeInsets.only(left: 16, right: 10),
      title: Text(l.language),
      trailing: DropdownButton<String?>(
        value: _languageCode.isEmpty ? null : _languageCode,
        hint: Text(l.systemDefault),
        items: [
          DropdownMenuItem<String?>(value: null, child: Text(l.systemDefault)),
          ..._languageOptions.entries.map((e) => DropdownMenuItem<String?>(value: e.key, child: Text(e.value))),
        ],
        onChanged: (value) => setState(() => _languageCode = value ?? ''),
      ),
    );
  }

  Widget _buildTheme() {
    final l = AppLocalizations.of(context)!;
    return ListTile(
      contentPadding: const EdgeInsets.only(left: 16, right: 10),
      title: Text(l.theme),
      trailing: DropdownButton<int>(
        value: _themeNumber,
        items: [
          DropdownMenuItem(value: 0, child: Text(l.systemDefault)),
          DropdownMenuItem(value: 1, child: Text(l.lightTheme)),
          DropdownMenuItem(value: 2, child: Text(l.darkTheme)),
        ],
        onChanged: (v) => setState(() => _themeNumber = v ?? 0),
      ),
    );
  }

}

class _VoiceOption {
  final String locale;
  final String name;
  const _VoiceOption(this.locale, this.name);
  String get id => '$locale|$name';
  String get label => '$locale $name';
}

lib/wheel_view.dart

import 'dart:math' as math;
import 'package:flutter/material.dart';
import 'package:roulettewheeleurope/color_utils.dart';

class WheelFlutterView extends StatelessWidget {
  final double size;
  final double wheelAngleDeg;
  final bool ballVisible;
  final double ballLeft;
  final double ballTop;
  final double ballSize;
  final double alphaThree;
  final double alphaTwo;
  final double alphaOne;
  final double alphaNoMoreBets;
  final double alphaResult;
  final String resultText;
  final String resultColor; // 'g'|'k'|'r'

  const WheelFlutterView({
    super.key,
    required this.size,
    required this.wheelAngleDeg,
    required this.ballVisible,
    required this.ballLeft,
    required this.ballTop,
    required this.ballSize,
    required this.alphaThree,
    required this.alphaTwo,
    required this.alphaOne,
    required this.alphaNoMoreBets,
    required this.alphaResult,
    required this.resultText,
    required this.resultColor,
  });

  @override
  Widget build(BuildContext context) {
    final wheelAngleRad = wheelAngleDeg * (math.pi / 180.0);
    return SizedBox(
      width: size,
      height: size,
      child: Stack(
        clipBehavior: Clip.hardEdge,
        children: [
          // Base
          Positioned.fill(
            child: Image.asset(
              'assets/image/roulettewheel_base.png',
              fit: BoxFit.contain,
              filterQuality: FilterQuality.low,
            ),
          ),
          // Top (rotating)
          Positioned.fill(
            child: Transform.rotate(
              angle: wheelAngleRad,
              child: Image.asset(
                'assets/image/roulettewheel_top.png',
                fit: BoxFit.contain,
                filterQuality: FilterQuality.low,
              ),
            ),
          ),
          // Ball
          Positioned(
            left: ballLeft,
            top: ballTop,
            child: Opacity(
              opacity: ballVisible ? 1.0 : 0.0,
              child: Image.asset(
                'assets/image/ball.png',
                width: ballSize,
                height: ballSize,
                fit: BoxFit.contain,
                filterQuality: FilterQuality.low,
              ),
            ),
          ),
          // Overlays 3,2,1, No more bets (full-size)
          Positioned.fill(
            child: IgnorePointer(
              ignoring: true,
              child: AnimatedOpacity(
                opacity: alphaThree.clamp(0.0, 1.0),
                duration: const Duration(milliseconds: 300),
                child: Image.asset('assets/image/three.png', fit: BoxFit.contain),
              ),
            ),
          ),
          Positioned.fill(
            child: IgnorePointer(
              ignoring: true,
              child: AnimatedOpacity(
                opacity: alphaTwo.clamp(0.0, 1.0),
                duration: const Duration(milliseconds: 300),
                child: Image.asset('assets/image/two.png', fit: BoxFit.contain),
              ),
            ),
          ),
          Positioned.fill(
            child: IgnorePointer(
              ignoring: true,
              child: AnimatedOpacity(
                opacity: alphaOne.clamp(0.0, 1.0),
                duration: const Duration(milliseconds: 300),
                child: Image.asset('assets/image/one.png', fit: BoxFit.contain),
              ),
            ),
          ),
          Positioned.fill(
            child: IgnorePointer(
              ignoring: true,
              child: AnimatedOpacity(
                opacity: alphaNoMoreBets.clamp(0.0, 1.0),
                duration: const Duration(milliseconds: 300),
                child: Image.asset('assets/image/nomorebets.png', fit: BoxFit.contain),
              ),
            ),
          ),
          // Result text
          Positioned.fill(
            child: IgnorePointer(
              ignoring: true,
              child: AnimatedOpacity(
                duration: const Duration(milliseconds: 500),
                opacity: alphaResult.clamp(0.0, 1.0),
                child: Align(
                  alignment: Alignment.topLeft,
                  child: Container(
                    margin: const EdgeInsets.only(bottom: 8),
                    padding: const EdgeInsets.symmetric(horizontal: 20, vertical: 3),
                    decoration: BoxDecoration(
                      color: colorFromCode(resultColor),
                      borderRadius: BorderRadius.circular(30),
                      border: Border.all(color: Colors.white, width: 1),
                    ),
                    child: Text(
                      resultText,
                      style: const TextStyle(
                        color: Colors.white,
                        fontSize: 48,
                        fontWeight: FontWeight.bold,
                      ),
                    ),
                  ),
                ),
              ),
            ),
          ),
        ],
      ),
    );
  }

}