Merge branch 'scanner-provider' into 'main'

Scanner provider

Closes #38

See merge request Crondung/hsma_cpd!34

README.md

@@ -14,3 +14,13 @@ Die App lässt sich als Android- und iOS App ausführen und zu Debugzwecken eben
 ## App bedienen
 
 Um die App nutzen zu können, müssen Settings eingelesen werden. Dazu kann entweder ein in die App integrierter QR-Code Scanner (mit dem beigefügten [QR-Code](./gruppe1_QR.png)) benutzt werden, oder zu Debugzwecken mit dem dafür vorgesehenen Button auf der Scannerseite über eine lokale JSON-Datei.
+Es ist zu beachten, dass das verwendete QR-Code Scanner Package für Mobilgeräte optimiert ist. Deshalb kann es zu Abstürzen beim Verwenden des Scanners mit der Web-Version kommen.
+Beim Verwenden der Web-Version sollten die Settings mit der lokalen JSON-Datei eingelesen werden.
+Der Button zum Einlesen der lokalen JSON-Datei kann über die Variable <code>bool useLocalConfig</code> in der Datei [globals.dart](./lib/globals.dart) ein- und ausgeblendet werden.
+
+## Authoren
+
+- Hinrik Ehrenfried 2012537
+- Patrick Meßmer 1911768
+- Kai Mannweiler 2012491
+- Julian Gegner 1922635

android/app/build.gradle

@@ -70,5 +70,7 @@ flutter {
 
 dependencies {
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+    implementation 'androidx.window:window:1.0.0'
+    implementation 'androidx.window:window-java:1.0.0'
     coreLibraryDesugaring 'com.android.tools:desugar_jdk_libs:1.1.5'
 }

lib/globals.dart

@@ -5,3 +5,6 @@ import 'package:smoke_cess_app/services/database_service.dart';
 
 DatabaseService databaseService = DatabaseMock();
 //  DatabaseService databaseService = DatabaseService.instance;
+
+// set this to read settings from local json file instead of scanning a qr code
+bool useLocalConfig = false;

lib/pages/scanner_page.dart

@@ -4,8 +4,10 @@ import 'package:provider/provider.dart';
 import 'package:smoke_cess_app/services/export_service.dart';
 import 'package:smoke_cess_app/services/settings_service.dart';
 import 'package:smoke_cess_app/services/notification_service.dart';
+import 'package:smoke_cess_app/widgets/buttons/text_icon_button.dart';
 import 'package:smoke_cess_app/widgets/scanner.dart';
 import '../providers/settings_provider.dart';
+import '../globals.dart' as globals;
 
 class ScannerPage extends StatelessWidget {
   const ScannerPage({super.key});
@@ -16,7 +18,7 @@ class ScannerPage extends StatelessWidget {
   }
 
   void loadJSON(BuildContext context) async {
-    var settingsModel = context.read<SettingsProvider>();
+    SettingsProvider settingsModel = context.read<SettingsProvider>();
     await loadSettingsFromLocalJSON();
     settingsModel.initSettings();
     NotificationService().setAllNotifications();
@@ -32,25 +34,26 @@ class ScannerPage extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
+    SettingsProvider settingsProvider = context.watch<SettingsProvider>();
+
     return Center(
         child: Column(
       mainAxisAlignment: MainAxisAlignment.center,
       children: [
         const MyScanner(),
         const SizedBox(height: 30),
-        ElevatedButton(
+        if (!settingsProvider.scanning)
-          style: ElevatedButton.styleFrom(
+          TextIconButton(
-              textStyle: const TextStyle(fontSize: 20)),
+              text: 'Export',
-          onPressed: () => loadJSON(context),
+              onPressed: ExportService().exportData,
-          child: const Text('Read JSON'),
+              iconData: Icons.upload),
-        ),
+        if (globals.useLocalConfig && !settingsProvider.scanning)
-        const SizedBox(height: 30),
+          ElevatedButton(
-        ElevatedButton(
+            style: ElevatedButton.styleFrom(
-          style: ElevatedButton.styleFrom(
+                textStyle: const TextStyle(fontSize: 20)),
-              textStyle: const TextStyle(fontSize: 20)),
+            onPressed: () => loadJSON(context),
-          onPressed: export,
+            child: const Text('Read JSON'),
-          child: const Text('Export'),
+          ),
-        )
       ],
     ));
   }

lib/providers/settings_provider.dart

@@ -6,9 +6,16 @@ import '../models/settings.dart';
 class SettingsProvider extends ChangeNotifier {
   Settings? _settings;
   bool _initialized = false;
+  bool _scanning = false;
 
   Settings? get settings => _settings;
   bool get initialized => _initialized;
+  bool get scanning => _scanning;
+
+  set scanning(bool value) {
+    _scanning = value;
+    notifyListeners();
+  }
 
   SettingsProvider() {
     initSettings();

lib/widgets/buttons/round_button_widget.dart

@@ -1,10 +1,10 @@
 import 'package:flutter/material.dart';
 
-class RoundAddButton extends StatelessWidget {
+class RoundButton extends StatelessWidget {
   final VoidCallback onPressed;
   final IconData iconData;
 
-  const RoundAddButton(
+  const RoundButton(
       {super.key, required this.onPressed, required this.iconData});
 
   @override

lib/widgets/buttons/text_icon_button.dart

@@ -0,0 +1,29 @@
+import 'package:flutter/material.dart';
+
+class TextIconButton extends StatelessWidget {
+  final String text;
+  final VoidCallback onPressed;
+  final IconData iconData;
+
+  const TextIconButton(
+      {super.key,
+      required this.text,
+      required this.onPressed,
+      required this.iconData});
+
+  @override
+  Widget build(BuildContext context) {
+    return SizedBox(
+      width: MediaQuery.of(context).size.width * 0.4,
+      child: FloatingActionButton.extended(
+        label: Text(text),
+        backgroundColor: Theme.of(context).colorScheme.primary,
+        icon: Icon(
+          iconData,
+          size: 24.0,
+        ),
+        onPressed: onPressed,
+      ),
+    );
+  }
+}

lib/widgets/scanner.dart

@@ -5,80 +5,81 @@ import 'package:provider/provider.dart';
 import 'package:smoke_cess_app/models/settings.dart';
 import 'package:smoke_cess_app/services/json_service.dart';
 import 'package:smoke_cess_app/services/settings_service.dart';
+import 'package:smoke_cess_app/widgets/buttons/text_icon_button.dart';
 import '../providers/settings_provider.dart';
 import '../services/notification_service.dart';
 
-class MyScanner extends StatefulWidget {
+class MyScanner extends StatelessWidget {
   const MyScanner({super.key});
 
   @override
-  State<StatefulWidget> createState() => MyScannerState();
+  Widget build(BuildContext context) {
-}
+    SettingsProvider settingsProvider = context.watch<SettingsProvider>();
 
-class MyScannerState extends State<MyScanner> {
+    void handleSucces(String? rawValue) {
-  bool scanning = false;
+      String qrText = rawValue!;
+      Map<String, dynamic> json = stringToJSON(qrText);
+      Settings settings = Settings.fromJson(json);
+      saveSettings(settings);
+      settingsProvider.initSettings();
+      NotificationService().setAllNotifications();
+      settingsProvider.scanning = false;
 
-  void handleSucces(String? rawValue) {
-    String qrText = rawValue!;
-    Map<String, dynamic> json = stringToJSON(qrText);
-    Settings settings = Settings.fromJson(json);
-    saveSettings(settings);
-    var settingsModel = context.read<SettingsProvider>();
-    settingsModel.initSettings();
-    NotificationService().setAllNotifications();
-    setState(() {
-      scanning = false;
       AwesomeDialog(
         context: context,
         dialogType: DialogType.success,
         title: 'Geschafft',
         desc: 'Der Code wurde erfolgreich gescannt!',
       ).show();
-    });
+    }
-  }
+
+    void handleError() {
+      settingsProvider.scanning = false;
 
-  void handleError() {
-    setState(() {
-      scanning = false;
       AwesomeDialog(
         context: context,
         dialogType: DialogType.error,
         title: 'Fehler',
         desc: 'Der QR-Code war fehlerhaft!',
       ).show();
-    });
-  }
-
-  void onDetect(capture) {
-    try {
-      final List<Barcode> barcodes = capture.barcodes;
-      for (final barcode in barcodes) {
-        if (barcode.rawValue != null) {
-          return handleSucces(barcode.rawValue);
-        }
-      }
-    } catch (e) {
-      handleError();
     }
-  }
 
-  @override
+    void onDetect(capture) {
-  Widget build(BuildContext context) {
+      try {
-    return scanning
+        final List<Barcode> barcodes = capture.barcodes;
+        for (final barcode in barcodes) {
+          if (barcode.rawValue != null) {
+            return handleSucces(barcode.rawValue);
+          }
+        }
+      } catch (e) {
+        handleError();
+      }
+    }
+
+    return settingsProvider.scanning
         ? Expanded(
-            child: MobileScanner(
+            child: Stack(
+            alignment: Alignment.center,
+            children: [
+              MobileScanner(
                 fit: BoxFit.contain,
                 controller: MobileScannerController(
                   detectionTimeoutMs: 2000,
                 ),
-                onDetect: onDetect))
+                onDetect: onDetect,
-        : ElevatedButton(
+              ),
-            style: ElevatedButton.styleFrom(
+              ClipRRect(
-                textStyle: const TextStyle(fontSize: 20)),
+                  borderRadius: BorderRadius.circular(20),
-            onPressed: () {
+                  child: Container(
-              setState(() => scanning = true);
+                      height: MediaQuery.of(context).size.height / 3,
-            },
+                      width: MediaQuery.of(context).size.width * 0.8,
-            child: const Text('Scan QR Code'),
+                      color: Colors.white.withOpacity(0.4))),
-          );
+            ],
+          ))
+        : TextIconButton(
+            text: "Scan",
+            onPressed: () => settingsProvider.scanning = true,
+            iconData: Icons.qr_code_scanner_outlined);
   }
 }

lib/widgets/view_form/view_form_page.dart

@@ -32,7 +32,7 @@ class ViewFormPage extends StatelessWidget {
       if (!pageProvider.showForm)
         Container(
           margin: EdgeInsets.symmetric(vertical: height * 0.02),
-          child: RoundAddButton(
+          child: RoundButton(
             iconData: Icons.add_outlined,
             onPressed: tasksProvider.tasks[page] ?? true
                 ? () => pageProvider.swap()