Adds "dark mode" support (#317)

* Adds "dark mode" support

- Uses adaptive_theme package

* CI fixes

* More fixes

* Update release notes

Author: SchrodingersGat

assets/release_notes.md

@@ -4,10 +4,12 @@
 ### 0.11.2 - April 2023
 ---
 
+- Adds "dark mode" display option
 - Add action to issue a purchase order
 - Add action to cancel a purchase order
 - Reimplement periodic checks for notifications
 
+
 ### 0.11.1 - April 2023
 ---
 

lib/l10n/app_en.arb

@@ -211,6 +211,12 @@
   "damaged": "Damaged",
   "@damaged": {},
 
+  "darkMode": "Dark Mode",
+  "@darkMode": {},
+
+  "darkModeEnable": "Enable dark mode",
+  "@darkModeEnable": {},
+
   "delete": "Delete",
   "@delete": {},
 

lib/main.dart

@@ -3,6 +3,7 @@ import "dart:async";
 import "package:flutter/material.dart";
 import "package:flutter/services.dart";
 
+import "package:adaptive_theme/adaptive_theme.dart";
 import "package:flutter_gen/gen_l10n/app_localizations.dart";
 import "package:flutter_localizations/flutter_localizations.dart";
 import "package:flutter_localized_locales/flutter_localized_locales.dart";
@@ -22,6 +23,8 @@ Future<void> main() async {
 
   WidgetsFlutterBinding.ensureInitialized();
 
+  final savedThemeMode = await AdaptiveTheme.getThemeMode();
+
   await runZonedGuarded<Future<void>>(() async {
 
     PackageInfo info = await PackageInfo.fromPlatform();
@@ -53,7 +56,7 @@ Future<void> main() async {
     };
 
     runApp(
-      InvenTreeApp()
+      InvenTreeApp(savedThemeMode)
     );
 
   }, (Object error, StackTrace stackTrace) async {
@@ -65,8 +68,12 @@ Future<void> main() async {
 class InvenTreeApp extends StatefulWidget {
   // This widget is the root of your application.
 
+  const InvenTreeApp(this.savedThemeMode);
+
+  final AdaptiveThemeMode? savedThemeMode;
+
   @override
-  InvenTreeAppState createState() => InvenTreeAppState();
+  InvenTreeAppState createState() => InvenTreeAppState(savedThemeMode);
 
   static InvenTreeAppState? of(BuildContext context) => context.findAncestorStateOfType<InvenTreeAppState>();
 
@@ -75,9 +82,13 @@ class InvenTreeApp extends StatefulWidget {
 
 class InvenTreeAppState extends State<StatefulWidget> {
 
+  InvenTreeAppState(this.savedThemeMode) : super();
+
   // Custom _locale (default = null; use system default)
   Locale? _locale;
 
+  final AdaptiveThemeMode? savedThemeMode;
+
   @override
   void initState() {
     super.initState();
@@ -122,25 +133,36 @@ class InvenTreeAppState extends State<StatefulWidget> {
   @override
   Widget build(BuildContext context) {
 
-    return MaterialApp(
-      debugShowCheckedModeBanner: false,
-      builder: OneContext().builder,
-      navigatorKey: OneContext().key,
-      onGenerateTitle: (BuildContext context) => "InvenTree",
-      theme: ThemeData(
+    return AdaptiveTheme(
+      light: ThemeData(
+        brightness: Brightness.light,
+        primarySwatch: Colors.lightBlue,
+        secondaryHeaderColor: Colors.blueGrey
+      ),
+      dark: ThemeData(
+        brightness: Brightness.dark,
         primarySwatch: Colors.lightBlue,
         secondaryHeaderColor: Colors.blueGrey,
       ),
-      home: InvenTreeHomePage(),
-      localizationsDelegates: [
-        I18N.delegate,
-        LocaleNamesLocalizationsDelegate(),
-        GlobalMaterialLocalizations.delegate,
-        GlobalCupertinoLocalizations.delegate,
-        GlobalWidgetsLocalizations.delegate,
-      ],
-      supportedLocales: supported_locales,
-      locale: _locale,
+      initial: savedThemeMode ?? AdaptiveThemeMode.light,
+      builder: (light, dark) =>  MaterialApp(
+        theme: light,
+        darkTheme: dark,
+        debugShowCheckedModeBanner: false,
+        builder: OneContext().builder,
+        navigatorKey: OneContext().key,
+        onGenerateTitle: (BuildContext context) => "InvenTree",
+        home: InvenTreeHomePage(),
+        localizationsDelegates: [
+          I18N.delegate,
+          LocaleNamesLocalizationsDelegate(),
+          GlobalMaterialLocalizations.delegate,
+          GlobalCupertinoLocalizations.delegate,
+          GlobalWidgetsLocalizations.delegate,
+        ],
+        supportedLocales: supported_locales,
+        locale: _locale,
+      )
     );
   }
 }

lib/settings/app_settings.dart

@@ -1,14 +1,18 @@
-
 import "package:flutter/material.dart";
+
+import "package:adaptive_theme/adaptive_theme.dart";
 import "package:font_awesome_flutter/font_awesome_flutter.dart";
 import "package:flutter_localized_locales/flutter_localized_locales.dart";
+import "package:one_context/one_context.dart";
 
 import "package:inventree/api_form.dart";
 import "package:inventree/l10.dart";
 import "package:inventree/l10n/supported_locales.dart";
 import "package:inventree/main.dart";
 import "package:inventree/preferences.dart";
 
+import "package:inventree/widget/progress.dart";
+
 
 class InvenTreeAppSettingsWidget extends StatefulWidget {
   @override
@@ -28,23 +32,32 @@ class _InvenTreeAppSettingsState extends State<InvenTreeAppSettingsWidget> {
   bool reportErrors = true;
   bool strictHttps = false;
 
+  bool darkMode = false;
+
   Locale? locale;
 
   @override
   void initState() {
     super.initState();
 
-    loadSettings();
+    loadSettings(OneContext().context!);
   }
 
-  Future <void> loadSettings() async {
+  Future <void> loadSettings(BuildContext context) async {
+
+    showLoadingOverlay(context);
+
     barcodeSounds = await InvenTreeSettingsManager().getValue(INV_SOUNDS_BARCODE, true) as bool;
     serverSounds = await InvenTreeSettingsManager().getValue(INV_SOUNDS_SERVER, true) as bool;
     reportErrors = await InvenTreeSettingsManager().getValue(INV_REPORT_ERRORS, true) as bool;
     strictHttps = await InvenTreeSettingsManager().getValue(INV_STRICT_HTTPS, false) as bool;
 
+    darkMode = AdaptiveTheme.of(context).mode.isDark;
+
     locale = await InvenTreeSettingsManager().getSelectedLocale();
 
+    hideLoadingOverlay();
+
     if (mounted) {
       setState(() {});
     }
@@ -168,6 +181,24 @@ class _InvenTreeAppSettingsState extends State<InvenTreeAppSettingsWidget> {
               ),
               leading: FaIcon(FontAwesomeIcons.mobile),
             ),
+            ListTile(
+              title: Text(L10().darkMode),
+              subtitle: Text(L10().darkModeEnable),
+              leading: FaIcon(FontAwesomeIcons.moon),
+              trailing: Switch(
+                value: darkMode,
+                onChanged: (bool value) {
+                  if (value) {
+                    AdaptiveTheme.of(context).setDark();
+                  } else {
+                    AdaptiveTheme.of(context).setLight();
+                  }
+                  setState(() {
+                    darkMode = value;
+                  });
+                }
+              )
+            ),
             ListTile(
               title: Text(L10().strictHttps),
               subtitle: Text(L10().strictHttpsDetails),

lib/settings/settings.dart

@@ -52,6 +52,14 @@ class _InvenTreeSettingsState extends State<InvenTreeSettingsWidget> {
                     Navigator.push(context, MaterialPageRoute(builder: (context) => InvenTreeLoginSettingsWidget()));
                   },
               ),
+              ListTile(
+                  title: Text(L10().appSettings),
+                  subtitle: Text(L10().appSettingsDetails),
+                  leading: FaIcon(FontAwesomeIcons.gears, color: COLOR_CLICK),
+                  onTap: () {
+                    Navigator.push(context, MaterialPageRoute(builder: (context) => InvenTreeAppSettingsWidget()));
+                  }
+              ),
               ListTile(
                 title: Text(L10().homeScreen),
                 subtitle: Text(L10().homeScreenSettings),
@@ -60,14 +68,6 @@ class _InvenTreeSettingsState extends State<InvenTreeSettingsWidget> {
                   Navigator.push(context, MaterialPageRoute(builder: (context) => HomeScreenSettingsWidget()));
                 }
               ),
-              ListTile(
-                title: Text(L10().appSettings),
-                subtitle: Text(L10().appSettingsDetails),
-                leading: FaIcon(FontAwesomeIcons.gears, color: COLOR_CLICK),
-                onTap: () {
-                  Navigator.push(context, MaterialPageRoute(builder: (context) => InvenTreeAppSettingsWidget()));
-                }
-              ),
               ListTile(
                 title: Text(L10().part),
                 subtitle: Text(L10().partSettings),

pubspec.lock

@@ -9,6 +9,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "52.0.0"
+  adaptive_theme:
+    dependency: "direct main"
+    description:
+      name: adaptive_theme
+      sha256: "61bde10390e937d11d05c6cf0d5cf378a73d49f9a442262e43613dae60ed0b3f"
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.2.0"
   analyzer:
     dependency: transitive
     description:

pubspec.yaml

@@ -7,6 +7,7 @@ environment:
   sdk: ">=2.16.0 <3.0.0"
 
 dependencies:
+  adaptive_theme: ^3.2.0                  # Theme management (e.g. dark mode)
   audioplayers: ^3.0.1                    # Play audio files
   cached_network_image: ^3.2.0            # Download and cache remote images
   camera: ^0.10.3                         # Camera