Initial support for localization

assets/i18n/en.po

@@ -0,0 +1,20 @@
+msgid ""
+msgstr ""
+"Project-Id-Version: \n"
+"POT-Creation-Date: 2021-09-29 09:59+0200\n"
+"PO-Revision-Date: 2021-09-29 10:58+0200\n"
+"Last-Translator: \n"
+"Language-Team: \n"
+"Language: en\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"X-Generator: Poedit 3.0\n"
+"X-Poedit-Basepath: .\n"
+"Plural-Forms: nplurals=2; plural=(n != 1);\n"
+
+msgid "Main menu"
+msgstr "Main menu"
+
+msgid "Use dark mode"
+msgstr "Use dark mode"

assets/i18n/fr.po

@@ -0,0 +1,20 @@
+msgid ""
+msgstr ""
+"Project-Id-Version: \n"
+"POT-Creation-Date: 2021-09-29 09:59+0200\n"
+"PO-Revision-Date: 2021-09-29 10:58+0200\n"
+"Last-Translator: \n"
+"Language-Team: \n"
+"Language: en\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"X-Generator: Poedit 3.0\n"
+"X-Poedit-Basepath: .\n"
+"Plural-Forms: nplurals=2; plural=(n != 1);\n"
+
+msgid "Main menu"
+msgstr "Menu principal"
+
+msgid "Use dark mode"
+msgstr "Utiliser le mode sombre"

assets/i18n/quickgui.pot

@@ -0,0 +1,20 @@
+msgid ""
+msgstr ""
+"Project-Id-Version: \n"
+"POT-Creation-Date: 2021-09-29 09:59+0200\n"
+"PO-Revision-Date: 2021-09-29 10:00+0200\n"
+"Last-Translator: \n"
+"Language-Team: \n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: 8bit\n"
+"X-Generator: Poedit 3.0\n"
+"X-Poedit-Basepath: .\n"
+"Plural-Forms: nplurals=2; plural=(n != 1);\n"
+"Language: en\n"
+
+msgid "Main menu"
+msgstr ""
+
+msgid "Use dark mode"
+msgstr ""

lib/main.dart

@@ -52,10 +52,12 @@ void main() async {
   setWindowMaxSize(const Size(692, 580));
   gOperatingSystems = await loadOperatingSystems(false);
   AppVersion.packageInfo = await PackageInfo.fromPlatform();
-  runApp(MultiProvider(
-    providers: [
-      ChangeNotifierProvider(create: (_) => AppTheme()),
-    ],
-    builder: (context, _) => const App(),
-  ));
+  runApp(
+    MultiProvider(
+      providers: [
+        ChangeNotifierProvider(create: (_) => AppTheme()),
+      ],
+      builder: (context, _) => const App(),
+    ),
+  );
 }

lib/src/app.dart

@@ -1,6 +1,8 @@
 import 'package:flutter/material.dart';
+import 'package:flutter_localizations/flutter_localizations.dart';
 import 'package:provider/provider.dart';
 import 'package:quickgui/src/globals.dart';
+import 'package:quickgui/src/i18n/quickgui_localizations_delegate.dart';
 import 'package:quickgui/src/mixins/preferences_mixin.dart';
 import 'package:quickgui/src/model/app_theme.dart';
 import 'package:quickgui/src/pages/main_page.dart';
@@ -20,7 +22,7 @@ class _AppState extends State<App> with PreferencesMixin {
       builder: (context, AsyncSnapshot<bool?> snapshot) {
         if (snapshot.connectionState == ConnectionState.done) {
           if (snapshot.data != null) {
-            context.read<AppTheme>().useDarkMode = snapshot.data!;
+            context.read<AppTheme>().useDarkModeSilently = snapshot.data!;
           }
           return Consumer<AppTheme>(
             builder: (context, appTheme, _) => MaterialApp(
@@ -28,6 +30,33 @@ class _AppState extends State<App> with PreferencesMixin {
               darkTheme: ThemeData.dark(),
               themeMode: appTheme.themeMode,
               home: const MainPage(title: 'Quickgui - A Flutter frontend for Quickget and Quickemu'),
+              supportedLocales: const [
+                /// List of locales we have translations for.
+                Locale('en', ''),
+                Locale('fr', ''),
+                Locale('fr', 'CH'),
+              ],
+              localizationsDelegates: [
+                QuickguiLocalizationsDelegate(),
+                GlobalMaterialLocalizations.delegate,
+                GlobalWidgetsLocalizations.delegate,
+              ],
+              localeListResolutionCallback: (locales, supportedLocales) {
+                if (locales != null) {
+                  for (var locale in locales) {
+                    var supportedLocale =
+                        supportedLocales.where((element) => element.languageCode == locale.languageCode && element.countryCode == locale.countryCode);
+                    if (supportedLocale.isNotEmpty) {
+                      return supportedLocale.first;
+                    }
+                    supportedLocale = supportedLocales.where((element) => element.languageCode == locale.languageCode);
+                    if (supportedLocale.isNotEmpty) {
+                      return supportedLocale.first;
+                    }
+                  }
+                }
+                return null;
+              },
             ),
           );
         } else {

lib/src/i18n/i18n_ext.dart

@@ -0,0 +1,6 @@
+import 'package:flutter/material.dart';
+import 'package:quickgui/src/i18n/quickgui_localizations.dart';
+
+extension I18nExt on BuildContext {
+  t(String key) => QuickguiLocalizations.of(this).t(key);
+}

lib/src/i18n/quickgui_localizations.dart

@@ -0,0 +1,28 @@
+import 'package:flutter/foundation.dart';
+import 'package:flutter/material.dart';
+import 'package:gettext/gettext.dart';
+import 'package:gettext_parser/gettext_parser.dart' as gettext_parser;
+
+class QuickguiLocalizations {
+  final _gt = Gettext(
+    onWarning: ((message) {
+      if (kDebugMode) {
+        // ignore: avoid_print
+        print('$message\n');
+        final r = RegExp(r'^No translation was found for msgid "(.*)" in msgctxt "(.*)" and domain "(.*)"$');
+        final matches = r.firstMatch(message);
+        var msgid = matches!.group(1);
+        // ignore: avoid_print
+        print('\nmsgid "$msgid"\nmsgstr ""\n \n');
+      }
+    }),
+  );
+
+  QuickguiLocalizations.fromPO(String poContent) {
+    _gt.addLocale(gettext_parser.po.parse(poContent));
+  }
+
+  static QuickguiLocalizations of(BuildContext context) => Localizations.of<QuickguiLocalizations>(context, QuickguiLocalizations)!;
+
+  String t(String key) => _gt.gettext(key);
+}

lib/src/i18n/quickgui_localizations_delegate.dart

@@ -0,0 +1,23 @@
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+import 'package:quickgui/src/i18n/quickgui_localizations.dart';
+
+class QuickguiLocalizationsDelegate extends LocalizationsDelegate<QuickguiLocalizations> {
+  @override
+  bool isSupported(Locale locale) => ['fr', 'en'].contains(locale.languageCode);
+
+  @override
+  Future<QuickguiLocalizations> load(Locale locale) async {
+    var poContent = '';
+    try {
+      poContent = await rootBundle.loadString('assets/i18n/${locale.languageCode}_${locale.countryCode}.po');
+    } catch (e) {
+      poContent = await rootBundle.loadString('assets/i18n/${locale.languageCode}.po');
+    }
+
+    return QuickguiLocalizations.fromPO(poContent);
+  }
+
+  @override
+  bool shouldReload(covariant LocalizationsDelegate<QuickguiLocalizations> old) => true;
+}

lib/src/model/app_theme.dart

@@ -4,8 +4,13 @@ class AppTheme extends ChangeNotifier {
   ThemeMode? _themeMode;
 
   ThemeMode get themeMode => _themeMode ?? ThemeMode.system;
-  set useDarkMode(bool useDarkMode) {
+
+  set useDarkModeSilently(bool useDarkMode) {
     _themeMode = useDarkMode ? ThemeMode.dark : ThemeMode.light;
+  }
+
+  set useDarkMode(bool useDarkMode) {
+    useDarkModeSilently = useDarkMode;
     notifyListeners();
   }
 }

lib/src/pages/main_page.dart

@@ -2,6 +2,7 @@ import 'package:flutter/material.dart';
 import 'package:quickgui/src/widgets/home_page/logo.dart';
 import 'package:quickgui/src/widgets/home_page/main_menu.dart';
 import 'package:quickgui/src/widgets/left_menu.dart';
+import 'package:quickgui/src/i18n/i18n_ext.dart';
 
 class MainPage extends StatefulWidget {
   const MainPage({Key? key, required this.title}) : super(key: key);
@@ -17,7 +18,7 @@ class _MainPageState extends State<MainPage> {
   Widget build(BuildContext context) {
     return Scaffold(
       appBar: AppBar(
-        title: const Text('Main menu'),
+        title: Text(context.t('Main menu')),
       ),
       drawer: const LeftMenu(),
       body: Column(

lib/src/widgets/left_menu.dart

@@ -5,6 +5,7 @@ import 'package:quickgui/src/globals.dart';
 import 'package:quickgui/src/mixins/app_version.dart';
 import 'package:quickgui/src/mixins/preferences_mixin.dart';
 import 'package:quickgui/src/model/app_theme.dart';
+import 'package:quickgui/src/i18n/i18n_ext.dart';
 
 class LeftMenu extends StatelessWidget with PreferencesMixin {
   const LeftMenu({Key? key}) : super(key: key);
@@ -24,7 +25,7 @@ class LeftMenu extends StatelessWidget with PreferencesMixin {
               padding: const EdgeInsets.symmetric(horizontal: 16),
               child: Row(
                 children: [
-                  const Text('Use dark mode'),
+                  Text(context.t('Use dark mode')),
                   Switch(
                     value: Theme.of(context).brightness == Brightness.dark,
                     onChanged: (value) {

pubspec.yaml

@@ -45,6 +45,11 @@ dependencies:
   shared_preferences: ^2.0.8
   package_info_plus: ^1.3.0
   provider: ^6.0.1
+  intl: ^0.17.0
+  gettext: ^1.2.0
+  gettext_parser: ^0.2.0
+  flutter_localizations: 
+    sdk: flutter
 
 dev_dependencies:
   flutter_test:
@@ -74,6 +79,7 @@ flutter:
   #   - images/a_dot_ham.jpeg
   assets:
     - assets/images/
+    - assets/i18n/
 
   # An image asset can refer to one or more resolution-specific "variants", see
   # https://flutter.dev/assets-and-images/#resolution-aware.

snap/snapcraft.yaml

@@ -1,53 +0,0 @@
-name: quickgui
-adopt-info: quickgui
-summary: a Flutter frontend for (quickget)[https://github.com/wimpysworld/quickget]
-description: |
-  The app is a frontend to quickget.
-grade: stable
-confinement: classic
-base: core20
-
-architectures:
-  - build-on: amd64
-
-apps:
-  quickgui:
-    command: bin/quickgui
-    environment:
-      PATH: $SNAP/usr/bin:$SNAP/bin:$PATH
-      LIVE_RUN: 1
-      LOG_LEVEL: debug
-
-parts:
-  quickgui-deps:
-    plugin: nil
-    stage-packages:
-      - libatk1.0-0
-      - libcairo-gobject2
-      - libcairo2
-      - libepoxy0
-      - libgtk-3-0
-      - libpango-1.0-0
-      - libpangocairo-1.0-0
-
-  quickgui:
-    source: .
-    source-type: git
-    plugin: nil
-    override-pull: |
-      snapcraftctl pull
-      snapcraftctl set-version "$(cat pubspec.yaml | grep '^version: ' | cut -c 10- | sed 's/+/-/')"
-    override-build: |
-      set -eux
-      mkdir -p $SNAPCRAFT_PART_INSTALL/bin/lib
-      flutter channel stable
-      flutter upgrade
-      flutter config --enable-linux-desktop
-      flutter doctor
-      flutter pub get
-      flutter build linux --release -v
-      cp -r build/linux/x64/release/bundle/* $SNAPCRAFT_PART_INSTALL/bin/
-    build-snaps:
-      - flutter/latest/stable
-    after:
-      - quickgui-deps