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ソースコード source code

下記アプリの主要なソースコードを公開しています。アプリ開発の参考になれば幸いです。

画像等が別途必要ですので下記情報のみでアプリが完成するものではありません。 アプリは少しずつ機能拡張していますのでストア公開されているアプリと内容が異なる場合があります。 コードはコピーして自由にお使いいただけます。ただし著作権は放棄しておりませんので全部の再掲載はご遠慮ください。部分的に再掲載したり、改変して再掲載するのは構いません。 自身のアプリ作成の参考として個人使用・商用問わず自由にお使いいただけます。 コード記述のお手本を示すものではありません。ミニアプリですので変数名などさほど気遣いしていない部分も有りますし間違いも有るかと思いますので参考程度にお考え下さい。 他の賢者の皆様が公開されているコードを参考にした箇所も含まれます。Flutter開発の熟練者が書いたコードではありません。 エンジニア向け技術情報共有サービスではありませんので説明は省いています。 GitHubなどへの公開は予定しておりません。

下記コードの最終ビルド日： 2026-01-07

name: pitchtuner
description: "pitchtuner"
publish_to: 'none'

version: 1.0.0+1

environment:
  sdk: ^3.10.4

dependencies:
  flutter:
    sdk: flutter
  flutter_localizations:      #flutter gen-l10n
    sdk: flutter
  cupertino_icons: ^1.0.8
  intl: ^0.20.2
  shared_preferences: ^2.3.2
  google_mobile_ads: ^7.0.0
  record: ^6.1.2                  # 録音用
  pitch_detector_dart: ^0.0.7     # ピッチ検出用
  permission_handler: ^12.0.1		#権限管理用
  google_fonts: ^7.0.0

dev_dependencies:
  flutter_lints: ^6.0.0
  flutter_launcher_icons: ^0.14.3    #flutter pub run flutter_launcher_icons
  flutter_native_splash: ^2.3.6     #flutter pub run flutter_native_splash:create

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: '#351e16'
  image: 'assets/image/splash.png'
  color_dark: '#351e16'
  image_dark: 'assets/image/splash.png'
  fullscreen: true
  android_12:
    icon_background_color: '#351e16'
    image: 'assets/image/splash.png'
    icon_background_color_dark: '#351e16'
    image_dark: 'assets/image/splash.png'

flutter:
  generate: true
  uses-material-design: true

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

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

import 'package:pitchtuner/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 Column(
              mainAxisSize: MainAxisSize.min,
              children: [
                SizedBox(height: 10),
                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();
          }
        },
      ),
    );
  }
}

/*
 *	mainへの記述
 *	void main() async {
 *		WidgetsFlutterBinding.ensureInitialized();
 *		if (!kIsWeb) {
 *			//AdMob初期化
 *			MobileAds.instance.initialize();
 *			//NPAポリシーの集中設定(将来拡張もここで) 現時点は使用していないので記述しなくても良い
 *			await AdManager.initForNPA();
 *		}
 *		runApp(const MyApp());
 *	}
 */

import 'dart:async';
import 'dart:io' show Platform;
import 'dart:ui';
import 'package:flutter/foundation.dart' show kIsWeb;
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;

  //(任意)アプリ起動時などに呼ぶ。将来のCMP/NPA関連設定を集中管理。
  static Future<void> initForNPA() async {
    if (kIsWeb) {
      return;
    }
    //ここでグローバルなRequestConfigurationを設定しておく(必要に応じて拡張)
    await MobileAds.instance.updateRequestConfiguration(
      RequestConfiguration(
        //例:最大コンテンツレーティング等を付けたい場合はここに追加
        //maxAdContentRating: MaxAdContentRating.g,	//例
        //tagForChildDirectedTreatment: TagForChildDirectedTreatment.unspecified,
        //tagForUnderAgeOfConsent: TagForUnderAgeOfConsent.unspecified,
      ),
    );
  }

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

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

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

    //常にNPAで配信(CMP対応)
    const adRequest = AdRequest(
      nonPersonalizedAds: true,	//NPA Non-Personalized Ads(非パーソナライズ広告)指定
    );

    _bannerAd = BannerAd(
      adUnitId: _adUnitId,
      request: 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() {
    if (kIsWeb) {
      return;
    }
    _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();
  }
}

/*
広告配信について
本アプリでは、Google AdMob を利用して広告を表示しています。
当アプリの広告はすべて「非パーソナライズ広告(NPA)」として配信しており、ユーザーの行動履歴や個人情報をもとにしたパーソナライズは一切行っていません。
Google AdMob によって、広告の表示のために以下の情報が利用される場合があります:
- 端末情報(例：OSの種類、画面サイズなど)
- おおまかな位置情報(国・地域レベル)
これらの情報は、パーソナライズを目的としたトラッキングやプロファイリングには使用されません。
詳しくは、Google のプライバシーポリシーをご覧ください:
https://policies.google.com/privacy


Advertising
This app uses Google AdMob to display advertisements.
All ads in this app are served as non-personalized ads (NPA).
This means that we do not use personal data or user behavior information to personalize the ads you see.
Google AdMob may use certain information in order to display ads properly, such as:
- Device information (e.g., OS type, screen size)
- Approximate location information (country/region level)
This information is not used for tracking or profiling for advertising purposes.
For more details, please refer to Google Privacy Policy:
https://policies.google.com/privacy
*/

/*
  CMP(Consent Management Platform)「同意管理プラットフォーム」
  UMP とは、Google AdMobでGDPRの同意を取得するために使用されるライブラリ User Messaging Platform (UMP) SDK

  ad_manager.dart で NPA Non-Personalized Ads(非パーソナライズ広告)指定 している。

  必要な変数
  late final UmpConsentController _adUmp;
  AdUmpState _adUmpState = AdUmpState.initial;

  @override
  void initState() {
    super.initState();
    _adUmp = UmpConsentController();
    _refreshConsentInfo();
  }

  必要な関数
  Future<void> _refreshConsentInfo() async {
    _adUmpState = await _adUmp.updateConsentInfo(current: _adUmpState);
    if (mounted) {
      setState(() {});
    }
  }
  Future<void> _onTapPrivacyOptions() async {
    final err = await _adUmp.showPrivacyOptions();
    await _refreshConsentInfo();
    if (err != null && mounted) {
      ScaffoldMessenger.of(context).showSnackBar(
        SnackBar(content: Text('プライバシー設定画面を表示できませんでした: ${err.message}')),
      );
    }
  }
 */

import 'dart:async';
import 'package:flutter/foundation.dart' show kIsWeb;
import 'package:google_mobile_ads/google_mobile_ads.dart';
import 'package:flutter/widgets.dart';

import 'package:pitchtuner/l10n/app_localizations.dart';

/// UMP状態格納用
class AdUmpState {
  final PrivacyOptionsRequirementStatus privacyStatus;
  final ConsentStatus consentStatus;
  final bool privacyOptionsRequired;
  final bool isChecking;
  const AdUmpState({
    required this.privacyStatus,
    required this.consentStatus,
    required this.privacyOptionsRequired,
    required this.isChecking,
  });

  AdUmpState copyWith({
    PrivacyOptionsRequirementStatus? privacyStatus,
    ConsentStatus? consentStatus,
    bool? privacyOptionsRequired,
    bool? isChecking,
  }) {
    return AdUmpState(
      privacyStatus: privacyStatus ?? this.privacyStatus,
      consentStatus: consentStatus ?? this.consentStatus,
      privacyOptionsRequired:
      privacyOptionsRequired ?? this.privacyOptionsRequired,
      isChecking: isChecking ?? this.isChecking,
    );
  }

  static const initial = AdUmpState(
    privacyStatus: PrivacyOptionsRequirementStatus.unknown,
    consentStatus: ConsentStatus.unknown,
    privacyOptionsRequired: false,
    isChecking: false,
  );
}

//UMPコントローラ
class UmpConsentController {
  //デバッグ用：EEA地域を強制するか(本番ではfalseにすること)
  final bool forceEeaForDebug = false;
  //埋め込みのテストデバイスID
  static const List<String> _testDeviceIds = [
    '608970392F100B87D62A1174996C952C', //arrows We2 (M07)
  ];

  ConsentRequestParameters _buildParams() {
    if (forceEeaForDebug && _testDeviceIds.isNotEmpty) {
      return ConsentRequestParameters(
        consentDebugSettings: ConsentDebugSettings(
          debugGeography: DebugGeography.debugGeographyEea,
          testIdentifiers: _testDeviceIds,
        ),
      );
    }
    return ConsentRequestParameters();
  }

  //同意情報を更新して状態を返す
  Future<AdUmpState> updateConsentInfo({AdUmpState current = AdUmpState.initial}) async {
    if (kIsWeb) return current;
    var state = current.copyWith(isChecking: true);

    try {
      final params = _buildParams();
      final completer = Completer<AdUmpState>();

      ConsentInformation.instance.requestConsentInfoUpdate(
        params,
            () async {
          final s = await ConsentInformation.instance.getPrivacyOptionsRequirementStatus();
          final c = await ConsentInformation.instance.getConsentStatus();
          completer.complete(
            state.copyWith(
              privacyStatus: s,
              consentStatus: c,
              privacyOptionsRequired: s == PrivacyOptionsRequirementStatus.required,
              isChecking: false,
            ),
          );
        },
            (FormError e) {
          completer.complete(
            state.copyWith(
              privacyStatus: PrivacyOptionsRequirementStatus.unknown,
              consentStatus: ConsentStatus.unknown,
              privacyOptionsRequired: false,
              isChecking: false,
            ),
          );
        },
      );

      state = await completer.future;
      return state;
    } catch (_) {
      return state.copyWith(isChecking: false);
    }
  }

  //プライバシーオプションフォームを表示
  Future<FormError?> showPrivacyOptions() async {
    if (kIsWeb) return null;
    final completer = Completer<FormError?>();
    ConsentForm.showPrivacyOptionsForm((FormError? e) {
      completer.complete(e);
    });
    return completer.future;
  }
}

extension ConsentStatusL10n on ConsentStatus {
  String localized(BuildContext context) {
    final l = AppLocalizations.of(context)!;
    switch (this) {
      case ConsentStatus.obtained:
        return l.cmpConsentStatusObtained;
      case ConsentStatus.required:
        return l.cmpConsentStatusRequired;
      case ConsentStatus.notRequired:
        return l.cmpConsentStatusNotRequired;
      case ConsentStatus.unknown:
        return l.cmpConsentStatusUnknown;
    }
  }
}
import 'dart:async';
import 'dart:math' as math;
import 'dart:typed_data';
import 'package:flutter/material.dart';
import 'package:record/record.dart';
import 'package:pitch_detector_dart/pitch_detector.dart';
import 'package:permission_handler/permission_handler.dart';
import 'package:google_fonts/google_fonts.dart';

import 'package:pitchtuner/parse_locale_tag.dart';
import 'package:pitchtuner/setting_page.dart';
import 'package:pitchtuner/theme_color.dart';
import 'package:pitchtuner/theme_mode_number.dart';
import 'package:pitchtuner/ad_manager.dart';
import 'package:pitchtuner/loading_screen.dart';
import 'package:pitchtuner/model.dart';
import 'package:pitchtuner/main.dart';
import 'package:pitchtuner/ad_banner_widget.dart';


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

class _MainHomePageState extends State<MainHomePage> {
  late AdManager _adManager;
  late ThemeColor _themeColor;
  bool _isReady = false;
  bool _isFirst = true;
  //
  final _audioRecorder = AudioRecorder();
  late PitchDetector _pitchDetector;
  // 設定値（サンプリングレートを一致させることが最重要）
  final int sampleRate = 44100;
  final int bufferSize = 2048;
  double frequency = 0.0;
  String note = "-";
  double cents = 0.0;
  bool isRecording = false;

  @override
  void initState() {
    super.initState();
    _initState();
  }

  void _initState() async {
    _pitchDetector = PitchDetector(
      audioSampleRate: sampleRate.toDouble(),
      bufferSize: bufferSize,
    );
    _startTuning();
    _adManager = AdManager();
    if (mounted) {
      setState(() {
        _isReady = true;
      });
    }
  }

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

  Future<void> _startTuning() async {
    // 1. マイク権限の取得
    if (await Permission.microphone.request().isGranted) {
      final config = RecordConfig(
        encoder: AudioEncoder.pcm16bits, // 16bit PCM
        sampleRate: sampleRate,
        numChannels: 1,
      );
      // 2. ストリームの開始
      final stream = await _audioRecorder.startStream(config);
      setState(() => isRecording = true);
      stream.listen((Uint8List data) async {
        try {
          // 1. データをコピーしてメモリ配置を整える
          final alignedData = Uint8List.fromList(data);
          // 2. 整列されたデータから Int16List を作成
          final int16Data = alignedData.buffer.asInt16List();
          // 3. 高速に正規化
          final doubleSamples = List<double>.filled(int16Data.length, 0.0);
          for (int i = 0; i < int16Data.length; i++) {
            doubleSamples[i] = int16Data[i] / 32768.0;
          }
          if (doubleSamples.length < 512) {
            return;
          }
          final result = await _pitchDetector.getPitchFromFloatBuffer(doubleSamples);
          if (result.pitched && result.probability > 0.8) {
            _updateTuningData(result.pitch);
          }
        } catch (e) {
          debugPrint("解析エラー: $e");
        }
      });
    }
  }

  void _updateTuningData(double pitch) {
    // 理想的な音名と周波数を計算
    double log2Value = math.log(pitch / 440.0) / math.log(2.0);
    double midiDouble = (12.0 * log2Value) + 69.0;
    int m = midiDouble.round();
    double idealFreq = 440.0 * math.pow(2.0, (m - 69.0) / 12.0);
    // セント(ズレ)の計算
    double diffCents = 1200 * (math.log(pitch / idealFreq) / math.log(2.0));
    // 音名の取得
    final notes = ["C", "C#", "D", "D#", "E", "F", "F#", "G", "G#", "A", "A#", "B"];
    String noteName = (m >= 0) ? notes[m % 12] : "-";
    int octave = (m ~/ 12) - 1;
    setState(() {
      frequency = pitch;
      note = "$noteName$octave";
      cents = diffCents.clamp(-50.0, 50.0);
    });
  }

  String _formatCents(double value) {
    final sign = value >= 0 ? '+' : '-';
    final absValue = value.abs();
    // 整数部分(2桁)
    String intPart = absValue.floor().toString().padLeft(2, '0');
    // 2桁目が '0' の場合はスペースに置き換え
    if (intPart[0] == '0') {
      intPart = ' ${intPart[1]}';
    }
    // 小数部分(1桁)
    final decimalPart = ((absValue * 10) % 10).floor();
    return "$sign$intPart.$decimalPart";
  }

  void _onSetting() async {
    final updatedSettings = await Navigator.push(
      context,
      MaterialPageRoute(
        builder: (context) => SettingPage(),
      ),
    );
    if (updatedSettings != null) {
      if (mounted) {
        final mainState = context.findAncestorStateOfType<MainAppState>();
        if (mainState != null) {
          mainState
            ..locale = parseLocaleTag(Model.languageCode)
            ..themeMode = ThemeModeNumber.numberToThemeMode(Model.themeNumber)
            ..setState(() {});
        }
      }
      if (mounted) {
        setState(() {
          _isFirst = true;
        });
      }
    }
  }

  @override
  Widget build(BuildContext context) {
    if (_isReady == false) {
      return const LoadingScreen();
    }
    if (_isFirst) {
      _isFirst = false;
      _themeColor = ThemeColor(context: context);
    }
    final bool isInTune = cents.abs() < 5 && note != "-";
    return Scaffold(
      appBar: AppBar(
        backgroundColor: _themeColor.mainBackColor,
        elevation: 0,
        actions: [
          IconButton(
            padding: EdgeInsets.zero,
            icon: Icon(
              Icons.settings,
              color: _themeColor.mainForeColor.withValues(alpha: 0.5),
            ),
            onPressed: _onSetting,
          ),
          const SizedBox(width: 10),
        ],
      ),
      body: Container(
        decoration: BoxDecoration(
          gradient: LinearGradient(
            begin: Alignment.topCenter,
            end: Alignment.bottomCenter,
            colors: [
              _themeColor.mainBackColor,
              _themeColor.mainBackColor2,
            ],
          ),
        ),
        child: Center(
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            crossAxisAlignment: CrossAxisAlignment.center,
            children: [
              SizedBox(
                width: double.infinity,
                child: Text(note,
                  textAlign: TextAlign.center,
                  style: GoogleFonts.orbitron(
                    color: isInTune ? _themeColor.mainAccentForeColor : Colors.white,
                    fontSize: 80,
                    fontWeight: FontWeight.bold,
                  ),
                ),
              ),
              Padding(
                padding: const EdgeInsets.only(left: 8, right: 8),
                child: AspectRatio(
                  aspectRatio: 1,
                  child: Container(
                    decoration: BoxDecoration(
                      borderRadius: BorderRadius.circular(120),
                    ),
                    clipBehavior: Clip.hardEdge,
                    child: Stack(
                      children: [
                        Column(
                          mainAxisAlignment: MainAxisAlignment.center,
                          children: [
                            Image.asset('assets/image/body.png'),
                          ]
                        ),
                        Column(
                          mainAxisAlignment: MainAxisAlignment.center,
                          children: [
                            Transform.rotate(
                              angle: cents * 3.1415926535 / 180 * 1.2,
                              child: Image.asset('assets/image/needle.png'),
                            )
                          ]
                        ),
                        Align(
                          alignment: Alignment(0, 0.47),
                          child: Text(_formatCents(cents),
                            textAlign: TextAlign.center,
                            style: GoogleFonts.shareTechMono(
                              color: isInTune ? _themeColor.mainAccentForeColor : Colors.orangeAccent,
                              fontSize: 20,
                            ),
                          ),
                        ),
                      ]
                    )
                  )
                )
              ),
              const SizedBox(height: 5),
              SizedBox(
                width: double.infinity,
                child: RichText(
                  textAlign: TextAlign.center,
                  text: TextSpan(
                    children: [
                      TextSpan(
                        text: frequency.toStringAsFixed(2),
                        style: GoogleFonts.shareTechMono(
                          color: _themeColor.mainAccentForeColor,
                          fontSize: 48,
                          fontWeight: FontWeight.bold,
                        ),
                      ),
                      WidgetSpan(child: SizedBox(width: 4)),
                      TextSpan(
                        text: "Hz",
                        style: GoogleFonts.shareTechMono(
                          color: _themeColor.mainAccentForeColor,
                          fontSize: 24,
                          fontWeight: FontWeight.bold,
                        ),
                      ),
                    ],
                  ),
                ),
              ),
              const Spacer(),
            ],
          )
        )
      ),
      bottomNavigationBar: Container(
        color: _themeColor.mainBackColor2,
        child: AdBannerWidget(adManager: _adManager),
      ),
    );
  }
}

import 'package:flutter/material.dart';

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

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: Colors.brown,
      body: const Center(
        child: Column(
          mainAxisSize: MainAxisSize.min,
          children: [
            CircularProgressIndicator(
              valueColor: AlwaysStoppedAnimation<Color>(Colors.yellow),
              backgroundColor: Colors.white,
            ),
            SizedBox(height: 16),
            Text(
              'Loading...',
              style: TextStyle(
                color: Colors.white,
                fontSize: 16,
              ),
            ),
          ],
        ),
      ),
    );
  }

}

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:google_mobile_ads/google_mobile_ads.dart';

import "package:pitchtuner/home_page.dart";
import 'package:pitchtuner/l10n/app_localizations.dart';
import 'package:pitchtuner/loading_screen.dart';
import 'package:pitchtuner/model.dart';
import 'package:pitchtuner/parse_locale_tag.dart';
import 'package:pitchtuner/theme_mode_number.dart';

void main() {
  WidgetsFlutterBinding.ensureInitialized();
  SystemChrome.setEnabledSystemUIMode(SystemUiMode.edgeToEdge);
  SystemChrome.setSystemUIOverlayStyle(
    const SystemUiOverlayStyle(
      systemNavigationBarColor: Colors.transparent,
      statusBarColor: Colors.transparent,
      systemNavigationBarContrastEnforced: false,
      systemStatusBarContrastEnforced: false,
    ),
  );
  MobileAds.instance.initialize();
  runApp(const MainApp());
}

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

class MainAppState extends State<MainApp> {
  ThemeMode themeMode = ThemeMode.light;
  Locale? locale;
  bool _isReady = false;

  @override
  void initState() {
    super.initState();
    _initState();
  }

  void _initState() async {
    await Model.ensureReady();
    themeMode = ThemeModeNumber.numberToThemeMode(Model.themeNumber);
    locale = parseLocaleTag(Model.languageCode);
    if (!mounted) {
      return;
    }
    setState(() {
      _isReady = true;
    });
  }

  Color _getRainbowAccentColor(int hue) {
    return HSVColor.fromAHSV(1.0, hue.toDouble(), 1.0, 1.0).toColor();
  }

  @override
  Widget build(BuildContext context) {
    if (!_isReady) {
      return MaterialApp(
        debugShowCheckedModeBanner: false,
        home: Scaffold(body: Center(child: LoadingScreen())),
      );
    }
    final seed = _getRainbowAccentColor(Model.schemeColor);
    final colorSchemeLight = ColorScheme.fromSeed(seedColor: seed, brightness: Brightness.light);
    final colorSchemeDark = ColorScheme.fromSeed(seedColor: seed, brightness: Brightness.dark);
    //アイコンテーマを生成する関数、または直接指定
    IconThemeData buildIconTheme(ColorScheme colors) => IconThemeData(
      color: colors.primary,
      size: 24,
    );
    final commonElevatedButtonTheme = ElevatedButtonThemeData(
      style: ElevatedButton.styleFrom(
        shape: RoundedRectangleBorder(
          borderRadius: BorderRadius.circular(8),
        ),
      ),
    );
    final commonSliderTheme = SliderThemeData(
      activeTrackColor: null,
      thumbColor: null,
      showValueIndicator: ShowValueIndicator.onDrag,
      thumbShape: RoundSliderThumbShape(enabledThumbRadius: 10),
      valueIndicatorTextStyle: TextStyle(color: Colors.black),
    );
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      localizationsDelegates: AppLocalizations.localizationsDelegates,
      supportedLocales: AppLocalizations.supportedLocales,
      locale: locale,
      themeMode: themeMode,
      theme: ThemeData(
        useMaterial3: true,
        colorScheme: ColorScheme.fromSeed(seedColor: seed, brightness: Brightness.light),
        sliderTheme: commonSliderTheme,
        elevatedButtonTheme: commonElevatedButtonTheme,
        iconTheme: buildIconTheme(colorSchemeLight),
      ),
      darkTheme: ThemeData(
        useMaterial3: true,
        colorScheme: ColorScheme.fromSeed(seedColor: seed, brightness: Brightness.dark),
        sliderTheme: commonSliderTheme,
        elevatedButtonTheme: commonElevatedButtonTheme,
        iconTheme: buildIconTheme(colorSchemeDark),
      ),
      home: const MainHomePage(),
    );
  }
}

import 'dart:ui' as ui;
import 'package:shared_preferences/shared_preferences.dart';

import 'package:pitchtuner/l10n/app_localizations.dart';

class Model {
  Model._();

  static const String _prefSchemeColor = 'schemeColor';
  static const String _prefThemeNumber = 'themeNumber';
  static const String _prefLanguageCode = 'languageCode';

  static bool _ready = false;
  static int _schemeColor = 0;
  static int _themeNumber = 0;
  static String _languageCode = '';

  static int get schemeColor => _schemeColor;
  static int get themeNumber => _themeNumber;
  static String get languageCode => _languageCode;

  static Future<void> ensureReady() async {
    if (_ready) {
      return;
    }
    final SharedPreferences prefs = await SharedPreferences.getInstance();
    //
    _schemeColor = (prefs.getInt(_prefSchemeColor) ?? 0).clamp(0, 360);
    _themeNumber = (prefs.getInt(_prefThemeNumber) ?? 0).clamp(0, 2);
    _languageCode = prefs.getString(_prefLanguageCode) ?? ui.PlatformDispatcher.instance.locale.languageCode;
    _languageCode = _resolveLanguageCode(_languageCode);
    _ready = true;
  }

  static String _resolveLanguageCode(String code) {
    final supported = AppLocalizations.supportedLocales;
    if (supported.any((l) => l.languageCode == code)) {
      return code;
    } else {
      return '';
    }
  }

  static Future<void> setSchemeColor(int value) async {
    _schemeColor = value;
    final SharedPreferences prefs = await SharedPreferences.getInstance();
    await prefs.setInt(_prefSchemeColor, value);
  }

  static Future<void> setThemeNumber(int value) async {
    _themeNumber = value;
    final SharedPreferences prefs = await SharedPreferences.getInstance();
    await prefs.setInt(_prefThemeNumber, value);
  }

  static Future<void> setLanguageCode(String value) async {
    _languageCode = value;
    final SharedPreferences prefs = await SharedPreferences.getInstance();
    await prefs.setString(_prefLanguageCode, value);
  }

}

import 'dart:ui';

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

import "package:flutter/material.dart";
import 'package:google_mobile_ads/google_mobile_ads.dart';

import "package:pitchtuner/l10n/app_localizations.dart";
import "package:pitchtuner/ad_banner_widget.dart";
import "package:pitchtuner/ad_manager.dart";
import "package:pitchtuner/ad_ump_status.dart";
import 'package:pitchtuner/loading_screen.dart';
import 'package:pitchtuner/theme_color.dart';
import 'package:pitchtuner/model.dart';


class SettingPage extends StatefulWidget {
  const SettingPage({super.key});

  @override
  State<SettingPage> createState() => _SettingPageState();
}

class _SettingPageState extends State<SettingPage> {
  late AdManager _adManager;
  late UmpConsentController _adUmp;
  AdUmpState _adUmpState = AdUmpState.initial;
  int _themeNumber = 0;
  String _languageCode = '';
  late ThemeColor _themeColor;
  bool _isReady = false;
  bool _isFirst = true;
  //
  int _schemeColor = 0;
  Color _accentColor = Colors.red;

  @override
  void initState() {
    super.initState();
    _initState();
  }

  void _initState() async {
    _adManager = AdManager();
    _themeNumber = Model.themeNumber;
    _languageCode = Model.languageCode;
    //
    _adUmp = UmpConsentController();
    _refreshConsentInfo();
    //
    _schemeColor = Model.schemeColor;
    _accentColor = _getRainbowAccentColor(_schemeColor);
    setState(() {
      _isReady = true;
    });
  }

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

  Future<void> _refreshConsentInfo() async {
    _adUmpState = await _adUmp.updateConsentInfo(current: _adUmpState);
    if (mounted) {
      setState(() {});
    }
  }

  Future<void> _onTapPrivacyOptions() async {
    final err = await _adUmp.showPrivacyOptions();
    await _refreshConsentInfo();
    if (err != null && mounted) {
      final l = AppLocalizations.of(context)!;
      ScaffoldMessenger.of(context).showSnackBar(
        SnackBar(content: Text('${l.cmpErrorOpeningSettings} ${err.message}')),
      );
    }
  }

  Color _getRainbowAccentColor(int hue) {
    return HSVColor.fromAHSV(1.0, hue.toDouble(), 1.0, 1.0).toColor();
  }

  void _onApply() async {
    await Model.setSchemeColor(_schemeColor);
    await Model.setThemeNumber(_themeNumber);
    await Model.setLanguageCode(_languageCode);
    if (!mounted) {
      return;
    }
    Navigator.of(context).pop(true);
  }

  @override
  Widget build(BuildContext context) {
    if (!_isReady) {
      return LoadingScreen();
    }
    if (_isFirst) {
      _isFirst = false;
      _themeColor = ThemeColor(themeNumber: Model.themeNumber, context: context);
    }
    final l = AppLocalizations.of(context)!;
    return Scaffold(
      backgroundColor: _themeColor.backColor,
      appBar: AppBar(
        backgroundColor: Colors.transparent,
        leading: IconButton(
          icon: const Icon(Icons.close),
          onPressed: () => Navigator.of(context).pop(false)
        ),
        actions: [
          Padding(
            padding: const EdgeInsets.only(right: 10),
            child:IconButton(
              icon: const Icon(Icons.check),
              onPressed: _onApply,
            )
          ),
        ],
      ),
      body: SafeArea(
        child: Column(children:[
          Expanded(
            child: GestureDetector(
              onTap: () => FocusScope.of(context).unfocus(),  //背景タップでキーボードを仕舞う
              child: SingleChildScrollView(
                child: Padding(
                  padding: const EdgeInsets.only(left: 16, right: 16, top: 0, bottom: 100),
                  child: Column(children: [
                    _buildBackgroundColor(l),
                    _buildTheme(l),
                    _buildLanguage(l),
                    _buildCmp(l),
                  ]),
                ),
              ),
            ),
          ),
        ])
      ),
      bottomNavigationBar: AdBannerWidget(adManager: _adManager),
    );
  }

  Widget _buildBackgroundColor(AppLocalizations l) {
    return Card(
      margin: const EdgeInsets.only(left: 0, top: 12, right: 0, bottom: 0),
      color: _themeColor.cardColor,
      elevation: 0,
      shadowColor: Colors.transparent,
      surfaceTintColor: Colors.transparent,
      child: Column(
        children: [
          Padding(
            padding: const EdgeInsets.only(left: 16, right: 16, top: 16),
            child: Row(
              children: [
                Text(l.colorScheme),
                const Spacer(),
              ],
            ),
          ),
          Padding(
            padding: const EdgeInsets.only(left: 16, right: 16),
            child: Row(
              children: <Widget>[
                Text(_schemeColor.toStringAsFixed(0)),
                Expanded(
                  child: SliderTheme(
                    data: SliderTheme.of(context).copyWith(
                      activeTrackColor: _accentColor,
                      inactiveTrackColor: _accentColor.withValues(alpha: 0.3),
                      thumbColor: _accentColor,
                      overlayColor: _accentColor.withValues(alpha: 0.2),
                      valueIndicatorColor: _accentColor,
                    ),
                    child: Slider(
                      value: _schemeColor.toDouble(),
                      min: 0,
                      max: 360,
                      divisions: 360,
                      label: _schemeColor.toString(),
                      onChanged: (double value) {
                        setState(() {
                          _schemeColor = value.toInt();
                          _accentColor = _getRainbowAccentColor(_schemeColor);
                        });
                      }
                    )
                  )
                ),
              ],
            ),
          ),
        ],
      )
    );
  }

  Widget _buildTheme(AppLocalizations l) {
    final TextTheme t = Theme.of(context).textTheme;
    return Card(
      margin: const EdgeInsets.only(left: 0, top: 12, right: 0, bottom: 0),
      color: _themeColor.cardColor,
      elevation: 0,
      child: Padding(
        padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 4),
        child: Row(
          children: [
            Expanded(
              child: Text(
                l.theme,
                style: t.bodyMedium,
              ),
            ),
            DropdownButton<int>(
              value: _themeNumber,
              items: [
                DropdownMenuItem(value: 0, child: Text(l.systemSetting)),
                DropdownMenuItem(value: 1, child: Text(l.lightTheme)),
                DropdownMenuItem(value: 2, child: Text(l.darkTheme)),
              ],
              onChanged: (value) {
                if (value != null) {
                  setState(() {
                    _themeNumber = value;
                  });
                }
              },
            ),
          ],
        ),
      ),
    );
  }

  Widget _buildLanguage(AppLocalizations l) {
    final Map<String,String> languageNames = {
      'af': 'af: Afrikaans',
      'ar': 'ar: العربية',
      'bg': 'bg: Български',
      'bn': 'bn: বাংলা',
      'bs': 'bs: Bosanski',
      'ca': 'ca: Català',
      'cs': 'cs: Čeština',
      'da': 'da: Dansk',
      'de': 'de: Deutsch',
      'el': 'el: Ελληνικά',
      'en': 'en: English',
      'es': 'es: Español',
      'et': 'et: Eesti',
      'fa': 'fa: فارسی',
      'fi': 'fi: Suomi',
      'fil': 'fil: Filipino',
      'fr': 'fr: Français',
      'gu': 'gu: ગુજરાતી',
      'he': 'he: עברית',
      'hi': 'hi: हिन्दी',
      'hr': 'hr: Hrvatski',
      'hu': 'hu: Magyar',
      'id': 'id: Bahasa Indonesia',
      'it': 'it: Italiano',
      'ja': 'ja: 日本語',
      //'jv': 'jv: Basa Jawa',    //flutterのサポート外
      'km': 'km: ខ្មែរ',
      'kn': 'kn: ಕನ್ನಡ',
      'ko': 'ko: 한국어',
      'lt': 'lt: Lietuvių',
      'lv': 'lv: Latviešu',
      'ml': 'ml: മലയാളം',
      'mr': 'mr: मराठी',
      'ms': 'ms: Bahasa Melayu',
      'my': 'my: မြန်မာ',
      'ne': 'ne: नेपाली',
      'nl': 'nl: Nederlands',
      'or': 'or: ଓଡ଼ିଆ',
      'pa': 'pa: ਪੰਜਾਬੀ',
      'pl': 'pl: Polski',
      'pt': 'pt: Português',
      'ro': 'ro: Română',
      'ru': 'ru: Русский',
      'si': 'si: සිංහල',
      'sk': 'sk: Slovenčina',
      'sr': 'sr: Српски',
      'sv': 'sv: Svenska',
      'sw': 'sw: Kiswahili',
      'ta': 'ta: தமிழ்',
      'te': 'te: తెలుగు',
      'th': 'th: ไทย',
      'tl': 'tl: Tagalog',
      'tr': 'tr: Türkçe',
      'uk': 'uk: Українська',
      'ur': 'ur: اردو',
      'uz': 'uz: Oʻzbekcha',
      'vi': 'vi: Tiếng Việt',
      'zh': 'zh: 中文',
      'zu': 'zu: isiZulu',
    };
    final TextTheme t = Theme.of(context).textTheme;
    return Card(
      margin: const EdgeInsets.only(left: 0, top: 12, right: 0, bottom: 0),
      color: _themeColor.cardColor,
      elevation: 0,
      shadowColor: Colors.transparent,
      surfaceTintColor: Colors.transparent,
      child: Padding(
        padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 4),
        child: Row(
          children: [
            Expanded(
              child: Text(
                l.language,
                style: t.bodyMedium,
              ),
            ),
            DropdownButton<String?>(
              value: _languageCode,
              items: [
                DropdownMenuItem(value: '', child: Text('Default')),
                ...languageNames.entries.map((entry) => DropdownMenuItem<String?>(
                  value: entry.key,
                  child: Text(entry.value),
                )),
              ],
              onChanged: (String? value) {
                setState(() {
                  _languageCode = value ?? '';
                });
              },
            ),
          ],
        ),
      ),
    );
  }

  Widget _buildCmp(AppLocalizations l) {
    final TextTheme t = Theme.of(context).textTheme;
    final showButton = _adUmpState.privacyStatus == PrivacyOptionsRequirementStatus.required;
    String statusLabel = l.cmpCheckingRegion;
    IconData statusIcon = Icons.help_outline;
    switch (_adUmpState.privacyStatus) {
      case PrivacyOptionsRequirementStatus.required:
        statusLabel = l.cmpRegionRequiresSettings;
        statusIcon = Icons.privacy_tip_outlined;
        break;
      case PrivacyOptionsRequirementStatus.notRequired:
        statusLabel = l.cmpRegionNoSettingsRequired;
        statusIcon = Icons.check_circle_outline;
        break;
      case PrivacyOptionsRequirementStatus.unknown:
        statusLabel = l.cmpRegionCheckFailed;
        statusIcon = Icons.error_outline;
        break;
    }
    return Card(
      margin: const EdgeInsets.only(left: 0, top: 12, right: 0, bottom: 0),
      color: _themeColor.cardColor,
      elevation: 0,
      child: Padding(
        padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 16),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children: [
            Text(
              l.cmpSettingsTitle,
              style: t.bodyMedium,
            ),
            const SizedBox(height: 8),
            Text(
              l.cmpConsentDescription,
              style: t.bodySmall,
            ),
            const SizedBox(height: 16),
            Center(
              child: Column(
                children: [
                  Chip(
                    avatar: Icon(statusIcon, size: 18),
                    label: Text(statusLabel),
                  ),
                  const SizedBox(height: 6),
                  Text(
                    '${l.cmpConsentStatusLabel} ${_adUmpState.consentStatus.localized(context)}',
                    style: t.bodySmall,
                  ),
                  if (showButton) ...[
                    const SizedBox(height: 16),
                    ElevatedButton.icon(
                      onPressed: _adUmpState.isChecking
                          ? null
                          : _onTapPrivacyOptions,
                      icon: const Icon(Icons.settings),
                      label: Text(
                        _adUmpState.isChecking
                            ? l.cmpConsentStatusChecking
                            : l.cmpOpenConsentSettings,
                      ),
                    ),
                    const SizedBox(height: 12),
                    OutlinedButton.icon(
                      onPressed: _adUmpState.isChecking
                          ? null
                          : _refreshConsentInfo,
                      icon: const Icon(Icons.refresh),
                      label: Text(l.cmpRefreshStatus),
                    ),
                    const SizedBox(height: 12),
                    OutlinedButton.icon(
                      onPressed: () async {
                        final messenger = ScaffoldMessenger.of(context);
                        final message = l.cmpResetStatusDone;
                        await ConsentInformation.instance.reset();
                        await _refreshConsentInfo();
                        if (!mounted) {
                          return;
                        }
                        messenger.showSnackBar(
                          SnackBar(content: Text(message)),
                        );
                      },
                      icon: const Icon(Icons.delete_sweep_outlined),
                      label: Text(l.cmpResetStatus),
                    ),
                  ],
                ],
              ),
            ),
          ],
        ),
      ),
    );
  }

}

import 'package:flutter/material.dart';

import 'package:pitchtuner/model.dart';

class ThemeColor {
  final int? themeNumber;
  final BuildContext context;

  ThemeColor({this.themeNumber, required this.context});

  Brightness get _effectiveBrightness {
    switch (themeNumber) {
      case 1:
        return Brightness.light;
      case 2:
        return Brightness.dark;
      default:
        return Theme.of(context).brightness;
    }
  }

  Color _getRainbowAccentColor(int hue, double saturation) {
    return HSVColor.fromAHSV(1.0, hue.toDouble(), saturation, 1.0).toColor();
  }

  bool get _isLight => _effectiveBrightness == Brightness.light;

  //main page
  Color get mainBackColor => _isLight ? Color.fromRGBO(78, 48, 39, 1.0) : Color.fromRGBO(20, 10, 10, 1.0);
  Color get mainBackColor2 => _isLight ? Color.fromRGBO(21, 11, 8, 1.0) : Color.fromRGBO(0, 0, 0, 1.0);
  Color get mainCardColor => _isLight ? Color.fromRGBO(255, 255, 255, 1.0) : Color.fromRGBO(51, 51, 51, 1.0);
  Color get mainForeColor => _isLight ? Color.fromRGBO(200, 200, 200, 1.0) : Color.fromRGBO(200, 200, 200, 1.0);
  Color get mainAccentForeColor => _getRainbowAccentColor(Model.schemeColor,0.6);
  //setting page
  Color get backColor => _isLight ? Colors.grey[200]! : Colors.grey[900]!;
  Color get cardColor => _isLight ? Colors.white : Colors.grey[800]!;
  Color get appBarForegroundColor => _isLight ? Colors.grey[700]! : Colors.white70;
  Color get dropdownColor => cardColor;
  Color get borderColor => _isLight ? Colors.grey[300]! : Colors.grey[700]!;
  Color get inputFillColor => _isLight ? Colors.grey[50]! : Colors.grey[900]!;
}

import 'package:flutter/material.dart';

class ThemeModeNumber {
  static ThemeMode numberToThemeMode(int value) {
    switch (value) {
      case 1:
        return ThemeMode.light;
      case 2:
        return ThemeMode.dark;
      default:
        return ThemeMode.system;
    }
  }
}