final

.metadata

@@ -15,21 +15,6 @@ migration:
     - platform: root
       create_revision: 78666c8dc57e9f7548ca9f8dd0740fbf0c658dc9
       base_revision: 78666c8dc57e9f7548ca9f8dd0740fbf0c658dc9
-    - platform: android
-      create_revision: 78666c8dc57e9f7548ca9f8dd0740fbf0c658dc9
-      base_revision: 78666c8dc57e9f7548ca9f8dd0740fbf0c658dc9
-    - platform: ios
-      create_revision: 78666c8dc57e9f7548ca9f8dd0740fbf0c658dc9
-      base_revision: 78666c8dc57e9f7548ca9f8dd0740fbf0c658dc9
-    - platform: linux
-      create_revision: 78666c8dc57e9f7548ca9f8dd0740fbf0c658dc9
-      base_revision: 78666c8dc57e9f7548ca9f8dd0740fbf0c658dc9
-    - platform: macos
-      create_revision: 78666c8dc57e9f7548ca9f8dd0740fbf0c658dc9
-      base_revision: 78666c8dc57e9f7548ca9f8dd0740fbf0c658dc9
-    - platform: web
-      create_revision: 78666c8dc57e9f7548ca9f8dd0740fbf0c658dc9
-      base_revision: 78666c8dc57e9f7548ca9f8dd0740fbf0c658dc9
     - platform: windows
       create_revision: 78666c8dc57e9f7548ca9f8dd0740fbf0c658dc9
       base_revision: 78666c8dc57e9f7548ca9f8dd0740fbf0c658dc9

.vscode/launch.json

@@ -23,20 +23,6 @@
             "request": "launch",
             "type": "dart",
             "flutterMode": "release"
-        },
-        {
-            "name": "Flutter Web (Chrome)",
-            "request": "launch",
-            "type": "dart",
-            "program": "lib/main.dart",
-            "args": [
-                "--web-port", "8080"
-            ],
-            "flutterMode": "debug",
-            "disableWebSecurity": true,
-            "webRenderer": "auto",
-            "deviceName": "Chrome",
-            "args2": []
         }
     ]
 }

README.md

@@ -1,22 +1,12 @@
 # optictext
 
-Ein Tool, das dem Benutzer die Option gibt, OCR auf Bildern anzuwenden oder Text in Bildern zu übersetzen und den übersetzten Text wieder auf das Bild zu setzen.
+Leider habe ich es nicht hinbekommen meine requests zu mocken.
+Deshalb habe ich nur UI Elemente getestet.
 
-Screen1: Wahl zwischen Image tools und Audio Tools(falls ich in der Zukunft weiter daran Arbeiten werde).
+Falls ich den Code vom Server noch nachreichen soll, kann ich dies machen.
-
-    Image tools screen: DoOCR und ImageTranslate.
-        DoOCR: User kann ein Bild hochladen und OCR darauf anwenden.
-        ImageTranslate: User kann ein Bild hochladen welches dann übersetzt wird.
-
-
-Den user die Sprache wählen zu lassen und dann in eine gewählte sprache zu übersetzen ist leicht gemacht,
-allerding ist es mir wichtig, das die spracherkennung auch automatisch funktioniert. 
-Im ersten schritt war es wichtig diese funktionalität zu haben.
-Aktuell läuft das auf einem vps, dafür ist der http request da. 
-Wenn möglich implementiere ich die langauge classfication in dart.
-
-aktuell teste ich auf einem android phone, es soll aber am ende auch auf IOS laufen.
 
+Flutter build apk wirft eine Fehlermeldung aber funktioniert. Bei der Präsentation hatte
+ich die release version dabei, die nicht mit "debug" gekennzeichnet war.
 
 
 ## Getting Started

android/app/build.gradle

@@ -45,7 +45,7 @@ android {
         applicationId "com.example.optictext"
         // You can update the following values to match your application needs.
         // For more information, see: https://docs.flutter.dev/deployment/android#reviewing-the-gradle-build-configuration.
-        minSdkVersion flutter.minSdkVersion
+        minSdkVersion 21
         targetSdkVersion flutter.targetSdkVersion
         versionCode flutterVersionCode.toInteger()
         versionName flutterVersionName

android/app/src/main/AndroidManifest.xml

@@ -1,4 +1,5 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android">
+    <uses-permission android:name="android.permission.INTERNET" />
     <application
         android:label="optictext"
         android:name="${applicationName}"

android/build.gradle

@@ -22,6 +22,7 @@ rootProject.buildDir = '../build'
 subprojects {
     project.buildDir = "${rootProject.buildDir}/${project.name}"
 }
+
 subprojects {
     project.evaluationDependsOn(':app')
 }

assets/tessdata_config.json

@@ -1,11 +1,9 @@
 {
   "files": [
     "eng.traineddata",
-    "ara.traineddata",
     "rus.traineddata",
     "deu.traineddata",
     "jpn.traineddata",
-    "ell.traineddata",
+    "fra.traineddata"
-    "chi_sim.traineddata"
   ]
 }

lib/bottom_bar.dart

@@ -1,51 +0,0 @@
-// ignore_for_file: library_private_types_in_public_api
-
-import 'package:flutter/material.dart';
-
-//might be useless. keep for now
-class BottomBar extends StatefulWidget {
-  const BottomBar({Key? key}) : super(key: key);
-
-  @override
-  _BottomBarState createState() => _BottomBarState();
-}
-
-class _BottomBarState extends State<BottomBar> {
-  int _selectedIndex = 0;
-
-  // ignore: unused_field
-  static const List<Widget> _widgetOptions = <Widget>[
-    Text('Home Page'),
-    Text('todo'),
-    Text('pro'),
-  ];
-
-  void _onItemTapped(int index) {
-    setState(() {
-      _selectedIndex = index;
-    });
-  }
-
-  @override
-  Widget build(BuildContext context) {
-    return BottomNavigationBar(
-      items: const <BottomNavigationBarItem>[
-        BottomNavigationBarItem(
-          icon: Icon(Icons.home),
-          label: 'Home',
-        ),
-        BottomNavigationBarItem(
-          icon: Icon(Icons.business),
-          label: 'todo',
-        ),
-        BottomNavigationBarItem(
-          icon: Icon(Icons.school),
-          label: 'pro',
-        ),
-      ],
-      currentIndex: _selectedIndex,
-      selectedItemColor: Colors.amber[800],
-      onTap: _onItemTapped,
-    );
-  }
-}

lib/file_utils.dart

@@ -0,0 +1,48 @@
+import 'dart:io';
+
+import 'package:flutter/material.dart';
+import 'package:fluttertoast/fluttertoast.dart';
+import 'package:image_gallery_saver/image_gallery_saver.dart';
+import 'dart:typed_data';
+
+class FileUtils {
+  static void saveTranslatedImage(Uint8List translatedImage) async {
+    if (Platform.isAndroid) {
+      final result = await ImageGallerySaver.saveImage(translatedImage);
+      if (result['isSuccess']) {
+        Fluttertoast.showToast(
+          msg: "Image saved successfully!",
+          toastLength: Toast.LENGTH_SHORT,
+          gravity: ToastGravity.BOTTOM,
+          timeInSecForIosWeb: 1,
+          backgroundColor: Colors.green,
+          textColor: Colors.white,
+          fontSize: 16.0,
+        );
+      } else {
+        Fluttertoast.showToast(
+          msg: "Failed to save image",
+          toastLength: Toast.LENGTH_SHORT,
+          gravity: ToastGravity.BOTTOM,
+          timeInSecForIosWeb: 1,
+          backgroundColor: Colors.red,
+          textColor: Colors.white,
+          fontSize: 16.0,
+        );
+      }
+    } else {
+      //vorerst... finde noch was besseres
+      final file = File('C:/Users/hfggvcb/Desktop/image.png');
+      await file.writeAsBytes(translatedImage);
+      Fluttertoast.showToast(
+        msg: "Image saved successfully on Windows!",
+        toastLength: Toast.LENGTH_SHORT,
+        gravity: ToastGravity.BOTTOM,
+        timeInSecForIosWeb: 1,
+        backgroundColor: Colors.green,
+        textColor: Colors.white,
+        fontSize: 16.0,
+      );
+    }
+  }
+}

lib/http_utils.dart

@@ -1,14 +1,21 @@
 import 'dart:convert';
+import 'dart:io';
+import 'package:cpd_app/language_utils.dart';
 import 'package:flutter/services.dart';
+import 'package:fluttertoast/fluttertoast.dart';
 import 'package:http/http.dart' as http;
+import 'package:http/http.dart';
 import 'package:http_parser/http_parser.dart';
+import 'package:flutter/material.dart';
+import 'package:connectivity/connectivity.dart';
+import 'dart:async';
 
 class HttpUtils {
   var client = http.Client();
-  Future<String> checkLang(Uint8List imageBytes, String imageName) async {
-    var client = http.Client();
 
-    var postUri = Uri.parse("http://130.61.88.150/upload");
+  Future<String> checkLang(Uint8List imageBytes, String imageName) async {
+    var postUri = Uri.parse("http://130.61.27.201/upload");
+
     http.MultipartRequest request = http.MultipartRequest("POST", postUri);
 
     http.MultipartFile multipartFile = http.MultipartFile.fromBytes(
@@ -19,6 +26,7 @@ class HttpUtils {
     );
 
     request.files.add(multipartFile);
+
     http.StreamedResponse response = await client.send(request);
     http.Response finalResponse = await http.Response.fromStream(response);
     var lang = "";
@@ -30,4 +38,151 @@ class HttpUtils {
     }
     return lang;
   }
+
+  Future<String> extractTextKnownSource(
+      Uint8List imageBytes, String sourceLang) async {
+    var postUri = Uri.parse("http://130.61.27.201/extractWithKnownSource");
+
+    http.MultipartRequest request = http.MultipartRequest("POST", postUri);
+    http.MultipartFile multipartFile = http.MultipartFile.fromBytes(
+      'file',
+      imageBytes,
+      filename: 'lorem.png',
+      contentType: MediaType('image', 'png'),
+    );
+
+    MultipartFile source = MultipartFile.fromString(
+      'sourceLang',
+      sourceLang,
+    );
+
+    request.files.add(multipartFile);
+    request.files.add(source);
+
+    http.StreamedResponse response = await client.send(request);
+    http.Response finalResponse = await http.Response.fromStream(response);
+    var lang = "";
+    if (finalResponse.statusCode == 200) {
+      lang = finalResponse.body.toString();
+    } else {
+      throw ('Error: ${finalResponse.statusCode}');
+    }
+    return lang;
+  }
+
+  Future<String> extractTextUnknownSource(Uint8List imageBytes) async {
+    var postUri = Uri.parse("http://130.61.27.201/extractWithoutKnownSource");
+
+    http.MultipartRequest request = http.MultipartRequest("POST", postUri);
+
+    http.MultipartFile multipartFile = http.MultipartFile.fromBytes(
+      'file',
+      imageBytes,
+      filename: 'lorem.png',
+      contentType: MediaType('image', 'png'),
+    );
+
+    request.files.add(multipartFile);
+
+    http.StreamedResponse response = await client.send(request);
+    http.Response finalResponse = await http.Response.fromStream(response);
+    var lang = "";
+    if (finalResponse.statusCode == 200) {
+      lang = finalResponse.body.toString();
+    } else {
+      throw ('Error: ${finalResponse.statusCode}');
+    }
+    return lang;
+  }
+
+  Future<Uint8List> translateKnownSource(
+      Uint8List imageBytes, String sourceLang, String targetLang) async {
+    var url = Uri.parse("http://130.61.27.201/translKnownSource");
+
+    http.MultipartRequest request = http.MultipartRequest("POST", url);
+    http.MultipartFile multipartFile = http.MultipartFile.fromBytes(
+      'file',
+      imageBytes,
+      filename: 'lorem.png',
+      contentType: MediaType('image', 'png'),
+    );
+
+    MultipartFile source = MultipartFile.fromString(
+      'sourceLang',
+      LanguageUtils.translatorLanguages[sourceLang]!,
+    );
+
+    MultipartFile target = MultipartFile.fromString(
+      'targetLang',
+      LanguageUtils.translatorLanguages[targetLang]!,
+    );
+
+    request.files.add(multipartFile);
+    request.files.add(source);
+    request.files.add(target);
+    http.StreamedResponse response = await client.send(request);
+    http.Response finalResponse = await http.Response.fromStream(response);
+    Uint8List lang = Uint8List(0);
+    if (finalResponse.statusCode == 200) {
+      lang = Uint8List.fromList(finalResponse.bodyBytes);
+    } else {
+      throw ('Error: ${finalResponse.statusCode}');
+    }
+    return lang;
+  }
+
+  void showProgressBar(BuildContext context) {
+    showDialog(
+      context: context,
+      barrierDismissible: false,
+      builder: (BuildContext context) {
+        return const Dialog(
+          backgroundColor: Color.fromARGB(0, 44, 44, 44),
+          elevation: 0,
+          child: Center(
+            child: CircularProgressIndicator(),
+          ),
+        );
+      },
+    );
+  }
+
+  void hideProgressBar(BuildContext context) {
+    Navigator.pop(context);
+  }
+
+  Future<bool> internetConnectivityCheck() async {
+    if (Platform.isAndroid) {
+      var connectivityResult = await Connectivity().checkConnectivity();
+      return connectivityResult == ConnectivityResult.wifi ||
+          connectivityResult == ConnectivityResult.mobile;
+    } else {
+      final response = await http.get(Uri.parse('http://130.61.27.201'));
+      return response.statusCode == 200;
+    }
+  }
+
+  void triggerNoInetToast() {
+    Fluttertoast.showToast(
+      msg: "No internet connection",
+      toastLength: Toast.LENGTH_SHORT,
+      gravity: ToastGravity.BOTTOM,
+      timeInSecForIosWeb: 1,
+      backgroundColor: const Color.fromARGB(255, 161, 120, 17),
+      textColor: Colors.white,
+      fontSize: 16.0,
+    );
+  }
+
+  void triggerConnectedToast() {
+    Fluttertoast.showToast(
+      msg: "Connected",
+      toastLength: Toast.LENGTH_SHORT,
+      gravity: ToastGravity.BOTTOM,
+      timeInSecForIosWeb: 1,
+      backgroundColor: const Color.fromARGB(255, 161, 120, 17),
+      textColor: Colors.white,
+      fontSize: 16.0,
+    );
+  }
 }

lib/image_translator.dart

@@ -1,10 +1,11 @@
 import 'dart:io';
+import 'package:cpd_app/file_utils.dart';
 import 'package:cpd_app/http_utils.dart';
-import 'package:http/http.dart' as http;
+import 'package:cpd_app/session_list.dart';
-import 'package:cpd_app/image_uploader.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'language_utils.dart';
+import 'package:fluttertoast/fluttertoast.dart';
 import 'package:image_picker/image_picker.dart';
 
 class ImageTranslation extends StatefulWidget {
@@ -16,64 +17,49 @@ class ImageTranslation extends StatefulWidget {
 
 class _ImageTranslationState extends State<ImageTranslation> {
   XFile? _selectedImage;
-  String _sourceLanguage = 'Auto';
+  bool _wasTranslated = false;
-  String _targetLanguage = 'English';
+  String _sourceLanguage = 'English';
-  String _translatedText = '';
+  String _targetLanguage = 'German';
-  final ImageUploader _imageUploader = ImageUploader();
+  Uint8List translatedIamge = Uint8List(0);
   final HttpUtils _httpUtils = HttpUtils();
-  /*1. Text extracten
+
-    2. Text übersetzen
+  Uint8List buildNewImage(
-    3. Text aus dem alten bild mit farbe überdecken (koordinaten etwas weiter links oben + rechts unten als die erkannten koordinaten)
+      Uint8List imageBytes, String text, String sourceLang, String targetLang) {
-    4. Übersetzen Text in neues bild einfügen
+    return imageBytes;
-  */
+  }
+
   Future<void> uploadImage(
     Uint8List imageBytes,
     String sourceLang,
     String targetLang,
   ) async {
-    setState(() {
+    Uint8List newImageBytes = Uint8List(0);
-      _translatedText = '';
+    _httpUtils.showProgressBar(context);
-    });
+    try {
-
+      newImageBytes = await _httpUtils.translateKnownSource(
-    //preprocessing
+          imageBytes, sourceLang, targetLang);
-    String text = '';
+    } finally {
-    if (LanguageUtils.tessLanguages[sourceLang] == 'auto') {
+      // ignore: use_build_context_synchronously
-      String lang = await _httpUtils.checkLang(imageBytes, 'image.jpg');
+      _httpUtils.hideProgressBar(context);
-      text = await _imageUploader.performOcr(imageBytes, 'image.jpg', lang);
-      sourceLang = LanguageUtils.tessLanguages[sourceLang]!;
-    } else {
-      String langCode = LanguageUtils.tessLanguages[sourceLang]!;
-      text = await _imageUploader.performOcr(imageBytes, 'image.jpg', langCode);
     }
-    if (text != '') {
+    if (newImageBytes.isEmpty) {
-      Map<String, String> requestBody = {
+      Fluttertoast.showToast(
-        'source_language': sourceLang,
+        msg: "Image could not be translated",
-        'target_language': LanguageUtils.translatorLanguages[targetLang]!,
+        toastLength: Toast.LENGTH_SHORT,
-        'text': text,
+        gravity: ToastGravity.BOTTOM,
-      };
+        timeInSecForIosWeb: 1,
-
+        backgroundColor: Colors.red,
-      Map<String, String> headers = {
+        textColor: Colors.white,
-        'content-type': 'application/x-www-form-urlencoded',
+        fontSize: 16.0,
-        'X-RapidAPI-Key': 'd0fa3c2f3cmsh1805e7a2fed7cc2p1683ebjsna722e2bffafe',
-        'X-RapidAPI-Host': 'text-translator2.p.rapidapi.com',
-      };
-
-      final response = await http.post(
-        Uri.parse('https://text-translator2.p.rapidapi.com/translate'),
-        headers: headers,
-        body: requestBody,
       );
-
+    } else {
-      if (response.statusCode == 200) {
+      DateTime now = DateTime.now();
-        _translatedText = response.body;
+      int milliseconds = now.millisecondsSinceEpoch;
-        setState(() {
+      ImageList.addImage(milliseconds.toString(), newImageBytes);
-          _translatedText = text;
+      _wasTranslated = true;
-          _selectedImage = null;
+      setState(() {
-        });
+        translatedIamge = newImageBytes;
-      } else {
+      });
-        print('Error: ${response.statusCode}');
-      }
-      print(_translatedText);
     }
   }
 
@@ -84,8 +70,22 @@ class _ImageTranslationState extends State<ImageTranslation> {
   @override
   Widget build(BuildContext context) {
     return Scaffold(
+      backgroundColor: const Color.fromARGB(99, 78, 72, 72),
       appBar: AppBar(
+        backgroundColor: const Color.fromARGB(255, 161, 120, 17),
         title: const Text('Image Translation'),
+        actions: [
+          IconButton(
+            icon: const Icon(Icons.wifi),
+            onPressed: () async {
+              if (!await _httpUtils.internetConnectivityCheck()) {
+                _httpUtils.triggerNoInetToast();
+              } else {
+                _httpUtils.triggerConnectedToast();
+              }
+            },
+          ),
+        ],
       ),
       body: Center(
         child: Column(
@@ -95,7 +95,6 @@ class _ImageTranslationState extends State<ImageTranslation> {
             Row(
               mainAxisAlignment: MainAxisAlignment.spaceEvenly,
               children: <Widget>[
-                // From - Subtle blue background
                 Container(
                   decoration: BoxDecoration(
                     color: Colors.blue.shade100,
@@ -114,6 +113,7 @@ class _ImageTranslationState extends State<ImageTranslation> {
                           });
                         },
                         items: sourceLanguages
+                            .where((value) => value != 'Auto')
                             .map<DropdownMenuItem<String>>((String value) {
                           return DropdownMenuItem<String>(
                             value: value,
@@ -124,7 +124,6 @@ class _ImageTranslationState extends State<ImageTranslation> {
                     ],
                   ),
                 ),
-                // Target - Subtle red background
                 Container(
                   decoration: BoxDecoration(
                     color: Colors.red.shade100,
@@ -143,6 +142,7 @@ class _ImageTranslationState extends State<ImageTranslation> {
                           });
                         },
                         items: targetLanguages
+                            .where((value) => value != 'Auto')
                             .map<DropdownMenuItem<String>>((String value) {
                           return DropdownMenuItem<String>(
                             value: value,
@@ -158,22 +158,29 @@ class _ImageTranslationState extends State<ImageTranslation> {
             const SizedBox(height: 20),
             TextButton(
               onPressed: () async {
-                final ImagePicker picker = ImagePicker();
+                if (!_wasTranslated) {
-                final XFile? image =
+                  final ImagePicker picker = ImagePicker();
-                    await picker.pickImage(source: ImageSource.gallery);
+                  final XFile? image =
-                if (image != null) {
+                      await picker.pickImage(source: ImageSource.gallery);
-                  setState(() {
+                  if (image != null) {
-                    _selectedImage = image;
+                    setState(() {
-                  });
+                      _selectedImage = image;
+                    });
+                  }
+                } else {
+                  Navigator.pushReplacement(
+                    context,
+                    MaterialPageRoute(
+                      builder: (BuildContext context) =>
+                          const ImageTranslation(),
+                    ),
+                  );
                 }
               },
-              style: ButtonStyle(
+              style: ElevatedButton.styleFrom(
-                backgroundColor: MaterialStateProperty.all<Color>(Colors.blue),
+                  foregroundColor: const Color.fromARGB(255, 0, 0, 0),
-              ),
+                  backgroundColor: const Color.fromARGB(255, 161, 120, 17)),
-              child: const Text(
+              child: Text(_wasTranslated ? 'Try Another' : 'Select Image'),
-                'Upload Image',
-                style: TextStyle(color: Colors.white),
-              ),
             ),
             ElevatedButton(
               onPressed: _selectedImage != null
@@ -186,30 +193,29 @@ class _ImageTranslationState extends State<ImageTranslation> {
                       }
                     }
                   : null,
-              child: const Text('Extract Text'),
+              style: ElevatedButton.styleFrom(
-            ),
+                  backgroundColor: const Color.fromARGB(255, 161, 120, 17),
-            _translatedText.isNotEmpty
+                  foregroundColor: const Color.fromARGB(255, 0, 0, 0)),
-                ? Expanded(
+              child: const Text('Translate Image'),
-                    child: Padding(
-                      padding: const EdgeInsets.all(8.0),
-                      child: TextFormField(
-                        readOnly: true,
-                        initialValue: _translatedText,
-                        maxLines: null,
-                        decoration: const InputDecoration(
-                          labelText: 'Extracted Text',
-                          border: OutlineInputBorder(),
-                        ),
-                      ),
-                    ),
-                  )
-                : Container(),
-            TextButton(
-              onPressed: () {
-                Clipboard.setData(ClipboardData(text: _translatedText));
-              },
-              child: const Text('Copy to Clipboard'),
             ),
+            if (translatedIamge.isEmpty && _selectedImage != null)
+              Image.file(File(_selectedImage!.path)),
+            if (translatedIamge.isNotEmpty) Image.memory(translatedIamge),
+            if (translatedIamge.isNotEmpty)
+              Visibility(
+                visible: translatedIamge.isNotEmpty,
+                child: ElevatedButton(
+                  onPressed: () {
+                    if (translatedIamge.isNotEmpty) {
+                      FileUtils.saveTranslatedImage(translatedIamge);
+                    }
+                  },
+                  style: ElevatedButton.styleFrom(
+                      backgroundColor: const Color.fromARGB(255, 161, 120, 17),
+                      foregroundColor: const Color.fromARGB(255, 0, 0, 0)),
+                  child: const Text('Save Translated Image'),
+                ),
+              ),
           ],
         ),
       ),

lib/language_utils.dart

@@ -4,106 +4,21 @@ class LanguageUtils {
     'English': 'eng',
     'German': 'deu',
     'French': 'fra',
-    'Spanish': 'spa',
-    'Italian': 'ita',
-    'Portuguese': 'por',
-    'Dutch': 'dut',
-    'Polish': 'pol',
     'Russian': 'rus',
-    'Japanese': 'jpn',
-    'Chinese (Simplified)': 'chi_sim',
-    'Chinese (Traditional)': 'chi_tra',
-    'Korean': 'kor',
-    'Arabic': 'ara',
-    'Hindi': 'hin',
-    'Indonesian': 'ind',
-    'Malay': 'mal',
-    'Thai': 'tha',
-    'Vietnamese': 'vie',
-    'Turkish': 'tur',
-    'Ukrainian': 'ukr',
-    'Hungarian': 'hun',
-    'Czech': 'cze',
-    'Finnish': 'fin',
-    'Danish': 'dan',
-    'Norwegian': 'nor',
-    'Swedish': 'swe',
-    'Greek': 'gre',
-    'Slovak': 'slo',
-    'Croatian': 'hrv',
-    'Lithuanian': 'lit',
-    'Romanian': 'rum',
-    'Bulgarian': 'bul',
-    'Latvian': 'lav',
-    'Estonian': 'est',
-    'Persian': 'per',
-    'Hebrew': 'heb',
-    'Serbian': 'srp',
-    'Albanian': 'alb',
-    'Tagalog': 'tgl',
-    'Azerbaijani': 'aze',
-    'Basque': 'baq',
-    'Belarusian': 'bel',
-    'Bengali': 'ben',
-    'Bosnian': 'bos',
-    'Cebuano': 'ceb',
-    'Esperanto': 'epo',
-    'Galician': 'glg',
-    'Georgian': 'geo',
-    'Gujarati': 'guj',
   };
 
   static Map<String, String> translatorLanguages = {
-    'Auto': 'auto',
     'English': 'en',
+    'Auto': 'auto',
     'German': 'de',
     'French': 'fr',
-    'Spanish': 'spa',
+    'Russian': 'ru',
-    'Italian': 'ita',
+  };
-    'Portuguese': 'por',
+
-    'Dutch': 'dut',
+  static Map<String, String> reMapping = {
-    'Polish': 'pol',
+    'deu': 'de',
-    'Russian': 'rus',
+    'eng': 'en',
-    'Japanese': 'jpn',
+    'fra': 'fr',
-    'Chinese (Simplified)': 'chi_sim',
+    'rus': 'ru',
-    'Chinese (Traditional)': 'chi_tra',
-    'Korean': 'kor',
-    'Arabic': 'ara',
-    'Hindi': 'hin',
-    'Indonesian': 'ind',
-    'Malay': 'mal',
-    'Thai': 'tha',
-    'Vietnamese': 'vie',
-    'Turkish': 'tur',
-    'Ukrainian': 'ukr',
-    'Hungarian': 'hun',
-    'Czech': 'cze',
-    'Finnish': 'fin',
-    'Danish': 'dan',
-    'Norwegian': 'nor',
-    'Swedish': 'swe',
-    'Greek': 'gre',
-    'Slovak': 'slo',
-    'Croatian': 'hrv',
-    'Lithuanian': 'lit',
-    'Romanian': 'rum',
-    'Bulgarian': 'bul',
-    'Latvian': 'lav',
-    'Estonian': 'est',
-    'Persian': 'per',
-    'Hebrew': 'heb',
-    'Serbian': 'srp',
-    'Albanian': 'alb',
-    'Tagalog': 'tgl',
-    'Azerbaijani': 'aze',
-    'Basque': 'baq',
-    'Belarusian': 'bel',
-    'Bengali': 'ben',
-    'Bosnian': 'bos',
-    'Cebuano': 'ceb',
-    'Esperanto': 'epo',
-    'Galician': 'glg',
-    'Georgian': 'geo',
-    'Gujarati': 'guj',
   };
 }

lib/main.dart

@@ -1,10 +1,23 @@
+import 'dart:ui';
+
 import 'package:cpd_app/image_translator.dart';
 import 'package:cpd_app/ocr_page.dart';
-import 'package:cpd_app/bottom_bar.dart';
+import 'package:cpd_app/session_list_view.dart';
 import 'package:flutter/material.dart';
 
-void main() {
+Future<void> main() async {
-  runApp(const MyApp());
+  FlutterView? flutterView = PlatformDispatcher.instance.views.firstOrNull;
+  if (flutterView == null || flutterView.physicalSize.isEmpty) {
+    PlatformDispatcher.instance.onMetricsChanged = () {
+      flutterView = PlatformDispatcher.instance.views.firstOrNull;
+      if (flutterView != null && !flutterView!.physicalSize.isEmpty) {
+        PlatformDispatcher.instance.onMetricsChanged = null;
+        runApp(const MyApp());
+      }
+    };
+  } else {
+    runApp(const MyApp());
+  }
 }
 
 class MyApp extends StatelessWidget {
@@ -24,8 +37,9 @@ class OpticText extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return Scaffold(
+      backgroundColor: const Color.fromARGB(99, 78, 72, 72),
       appBar: AppBar(
-        backgroundColor: Colors.blue,
+        backgroundColor: const Color.fromARGB(255, 161, 120, 17),
         title: const Text('Optic Text'),
       ),
       body: Center(
@@ -36,10 +50,12 @@ class OpticText extends StatelessWidget {
               MaterialPageRoute(builder: (context) => const ImageToolsPage()),
             );
           },
+          style: ElevatedButton.styleFrom(
+              backgroundColor: const Color.fromARGB(255, 161, 120, 17),
+              foregroundColor: const Color.fromARGB(255, 0, 0, 0)),
           child: const Text('Image Tools'),
         ),
       ),
-      bottomNavigationBar: const BottomBar(),
     );
   }
 }
@@ -50,7 +66,9 @@ class ImageToolsPage extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return Scaffold(
+      backgroundColor: const Color.fromARGB(99, 78, 72, 72),
       appBar: AppBar(
+        backgroundColor: const Color.fromARGB(255, 161, 120, 17),
         title: const Text('Image Tools'),
       ),
       body: Center(
@@ -58,12 +76,16 @@ class ImageToolsPage extends StatelessWidget {
           mainAxisAlignment: MainAxisAlignment.center,
           children: <Widget>[
             ElevatedButton(
+              key: const Key('ocr_button'),
               onPressed: () {
                 Navigator.push(
                   context,
                   MaterialPageRoute(builder: (context) => const OCRPage()),
                 );
               },
+              style: ElevatedButton.styleFrom(
+                  backgroundColor: const Color.fromARGB(255, 161, 120, 17),
+                  foregroundColor: const Color.fromARGB(255, 0, 0, 0)),
               child: const Text('OCR'),
             ),
             ElevatedButton(
@@ -74,8 +96,24 @@ class ImageToolsPage extends StatelessWidget {
                       builder: (context) => const ImageTranslation()),
                 );
               },
+              style: ElevatedButton.styleFrom(
+                  backgroundColor: const Color.fromARGB(255, 161, 120, 17),
+                  foregroundColor: const Color.fromARGB(255, 0, 0, 0)),
               child: const Text('Image Translation'),
             ),
+            ElevatedButton(
+              onPressed: () {
+                Navigator.push(
+                  context,
+                  MaterialPageRoute(
+                      builder: (context) => const SessionListView()),
+                );
+              },
+              style: ElevatedButton.styleFrom(
+                  backgroundColor: const Color.fromARGB(255, 161, 120, 17),
+                  foregroundColor: const Color.fromARGB(255, 0, 0, 0)),
+              child: const Text('Previous Images'),
+            ),
           ],
         ),
       ),

lib/ocr_page.dart

@@ -5,48 +5,98 @@ import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'language_utils.dart';
 import 'package:image_picker/image_picker.dart';
+import 'package:fluttertoast/fluttertoast.dart';
 
 class OCRPage extends StatefulWidget {
   const OCRPage({Key? key}) : super(key: key);
 
   @override
-  State<OCRPage> createState() => _OCRPageState();
+  State<OCRPage> createState() => OCRPageState();
 }
 
-class _OCRPageState extends State<OCRPage> {
+class OCRPageState extends State<OCRPage> {
-  String _extractedText = '';
+  List<String> tessLangCodes = LanguageUtils.tessLanguages.keys.toList();
+  String extractedText = '';
   final ImageUploader _imageUploader = ImageUploader();
   final HttpUtils _httpUtils = HttpUtils();
   String _selectedLanguage = 'Auto';
-  XFile? _selectedImage;
+  XFile? selectedImage;
 
-  Future<void> uploadImage(
+  Future<void> getText(Uint8List imageBytes, String selectedLanguage) async {
-      Uint8List imageBytes, String selectedLanguage) async {
     setState(() {
-      _extractedText = '';
+      extractedText = '';
     });
 
-    //preprocessing, maybe
+    if (!(await _httpUtils.internetConnectivityCheck())) {
-    String text = '';
+      _httpUtils.triggerNoInetToast();
-    if (selectedLanguage == 'Auto') {
+      return;
-      String lang = await _httpUtils.checkLang(imageBytes, 'image.jpg');
+    }
-      text = await _imageUploader.performOcr(imageBytes, 'image.jpg', lang);
+    String text = '';
-    } else {
+    // ignore: use_build_context_synchronously
-      String langCode = LanguageUtils.tessLanguages[selectedLanguage]!;
+    _httpUtils.showProgressBar(context);
-      text = await _imageUploader.performOcr(imageBytes, 'image.jpg', langCode);
+    try {
+      if (Platform.isWindows) {
+        if (selectedLanguage == 'Auto') {
+          String lang = await _httpUtils.checkLang(imageBytes, 'image.jpg');
+          String mappedLang = LanguageUtils.reMapping[lang]!;
+          text =
+              await _httpUtils.extractTextKnownSource(imageBytes, mappedLang);
+        } else {
+          String langCode =
+              LanguageUtils.translatorLanguages[selectedLanguage]!;
+          text = await _httpUtils.extractTextKnownSource(imageBytes, langCode);
+        }
+      } else {
+        if (selectedLanguage == 'Auto') {
+          String lang = await _httpUtils.checkLang(imageBytes, 'image.jpg');
+          text = await _imageUploader.performOcr(imageBytes, 'image.jpg', lang);
+        } else {
+          String langCode = LanguageUtils.tessLanguages[selectedLanguage]!;
+          text = await _imageUploader.performOcr(
+              imageBytes, 'image.jpg', langCode);
+        }
+      }
+    } finally {
+      // ignore: use_build_context_synchronously
+      _httpUtils.hideProgressBar(context);
+    }
+    if (text == "") {
+      Fluttertoast.showToast(
+        msg: "Text could not be extracted",
+        toastLength: Toast.LENGTH_SHORT,
+        gravity: ToastGravity.BOTTOM,
+        timeInSecForIosWeb: 1,
+        backgroundColor: const Color.fromARGB(255, 161, 120, 17),
+        textColor: Colors.white,
+        fontSize: 16.0,
+      );
+    } else {
+      setState(() {
+        extractedText = text;
+        selectedImage = null;
+      });
     }
-    setState(() {
-      _extractedText = text;
-      _selectedImage = null;
-    });
   }
 
-  List<String> languages = LanguageUtils.tessLanguages.keys.toList();
   @override
   Widget build(BuildContext context) {
     return Scaffold(
+      backgroundColor: const Color.fromARGB(99, 78, 72, 72),
       appBar: AppBar(
+        backgroundColor: const Color.fromARGB(255, 161, 120, 17),
         title: const Text('OCR'),
+        actions: [
+          IconButton(
+            icon: const Icon(Icons.wifi),
+            onPressed: () async {
+              if (!await _httpUtils.internetConnectivityCheck()) {
+                _httpUtils.triggerNoInetToast();
+              } else {
+                _httpUtils.triggerConnectedToast();
+              }
+            },
+          ),
+        ],
       ),
       body: Center(
         child: Column(
@@ -54,23 +104,33 @@ class _OCRPageState extends State<OCRPage> {
           children: <Widget>[
             DropdownButton<String>(
               value: _selectedLanguage,
+              style: const TextStyle(color: Colors.white),
+              dropdownColor: const Color(0xFF4E4848),
               onChanged: (newValue) {
                 setState(() {
                   _selectedLanguage = newValue!;
                 });
               },
-              items: languages.map<DropdownMenuItem<String>>((String value) {
+              items:
+                  tessLangCodes.map<DropdownMenuItem<String>>((String value) {
                 return DropdownMenuItem<String>(
                   value: value,
                   child: Text(value),
                 );
               }).toList(),
             ),
-            _selectedImage != null
+            //Image preview hier
-                ? SizedBox(
+            selectedImage != null
+                ? Container(
                     width: MediaQuery.of(context).size.width * 0.8,
                     height: MediaQuery.of(context).size.height * 0.4,
-                    child: Image.file(File(_selectedImage!.path)),
+                    decoration: BoxDecoration(
+                      border: Border.all(
+                        color: const Color.fromARGB(255, 161, 120, 17),
+                        width: 1.0,
+                      ),
+                    ),
+                    child: Image.file(File(selectedImage!.path)),
                   )
                 : Container(),
             ElevatedButton(
@@ -80,33 +140,44 @@ class _OCRPageState extends State<OCRPage> {
                     await picker.pickImage(source: ImageSource.gallery);
                 if (image != null) {
                   setState(() {
-                    _selectedImage = image;
+                    selectedImage = image;
                   });
                 }
               },
+              style: ElevatedButton.styleFrom(
+                  backgroundColor: const Color.fromARGB(255, 161, 120, 17),
+                  foregroundColor: const Color.fromARGB(255, 0, 0, 0)),
               child: const Text('Select Image'),
             ),
             ElevatedButton(
-              onPressed: _selectedImage != null
+              onPressed: selectedImage != null
                   ? () async {
-                      if (_selectedImage != null) {
+                      if (selectedImage != null && selectedImage!.path != "") {
-                        File imageFile = File(_selectedImage!.path);
+                        File imageFile = File(selectedImage!.path);
                         List<int> imageBytes = imageFile.readAsBytesSync();
-                        await uploadImage(
+                        await getText(
                             Uint8List.fromList(imageBytes), _selectedLanguage);
+                      } else if (selectedImage != null &&
+                          selectedImage!.path == "") {
+                        Uint8List? list = await selectedImage?.readAsBytes();
+                        await getText(list!, _selectedLanguage);
                       }
                     }
                   : null,
+              style: ElevatedButton.styleFrom(
+                  backgroundColor: const Color.fromARGB(255, 161, 120, 17),
+                  foregroundColor: const Color.fromARGB(255, 0, 0, 0)),
               child: const Text('Extract Text'),
             ),
-            _extractedText.isNotEmpty
+            extractedText.isNotEmpty
                 ? Expanded(
                     child: Padding(
                       padding: const EdgeInsets.all(8.0),
                       child: TextFormField(
                         readOnly: true,
-                        initialValue: _extractedText,
+                        initialValue: extractedText,
                         maxLines: null,
+                        style: const TextStyle(color: Colors.white),
                         decoration: const InputDecoration(
                           labelText: 'Extracted Text',
                           border: OutlineInputBorder(),
@@ -115,12 +186,19 @@ class _OCRPageState extends State<OCRPage> {
                     ),
                   )
                 : Container(),
-            TextButton(
+
-              onPressed: () {
+            extractedText.isNotEmpty
-                Clipboard.setData(ClipboardData(text: _extractedText));
+                ? TextButton(
-              },
+                    onPressed: () {
-              child: const Text('Copy to Clipboard'),
+                      Clipboard.setData(ClipboardData(text: extractedText));
-            ),
+                    },
+                    style: TextButton.styleFrom(
+                      backgroundColor: const Color.fromARGB(0, 33, 149, 243),
+                      foregroundColor: const Color.fromARGB(255, 161, 120, 17),
+                    ),
+                    child: const Text('Copy to Clipboard'),
+                  )
+                : const SizedBox(),
           ],
         ),
       ),

lib/session_list.dart

@@ -0,0 +1,13 @@
+import 'dart:typed_data';
+
+class ImageList {
+  static Map<String, Uint8List> images = {};
+
+  static Map<String, Uint8List> getImages() {
+    return images;
+  }
+
+  static void addImage(String name, Uint8List image) {
+    images[name] = image;
+  }
+}

lib/session_list_view.dart

@@ -0,0 +1,77 @@
+import 'dart:typed_data';
+import 'package:cpd_app/file_utils.dart';
+import 'package:cpd_app/session_list.dart';
+import 'package:flutter/material.dart';
+
+class SessionListView extends StatefulWidget {
+  const SessionListView({super.key});
+
+  @override
+  State<SessionListView> createState() => _SessionListViewState();
+}
+
+class _SessionListViewState extends State<SessionListView> {
+  final Map<String, Uint8List> _images = ImageList.getImages();
+  String? _selectedImageKey;
+  bool _showSaveButton = false;
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      backgroundColor: const Color.fromARGB(99, 78, 72, 72),
+      appBar: AppBar(
+        backgroundColor: const Color.fromARGB(255, 161, 120, 17),
+        title: const Text('Image Gallery'),
+      ),
+      body: GridView.builder(
+        gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(
+          crossAxisCount: 3,
+          crossAxisSpacing: 4.0,
+          mainAxisSpacing: 4.0,
+        ),
+        itemCount: _images.length,
+        itemBuilder: (BuildContext context, int index) {
+          String imageKey = _images.keys.elementAt(index);
+          Uint8List imageData = _images[imageKey]!;
+          return GestureDetector(
+            onTap: () {
+              setState(() {
+                _selectedImageKey = imageKey;
+                _showSaveButton = true;
+              });
+            },
+            child: Container(
+              decoration: BoxDecoration(
+                border: Border.all(
+                  color: _selectedImageKey == imageKey
+                      ? Colors.blue
+                      : Colors.transparent,
+                  width: 2.0,
+                ),
+              ),
+              child: Image.memory(
+                imageData,
+                fit: BoxFit.cover,
+              ),
+            ),
+          );
+        },
+      ),
+      floatingActionButton: _showSaveButton
+          ? FloatingActionButton(
+              onPressed: () {
+                saveImage(_selectedImageKey!);
+                setState(() {
+                  _showSaveButton = false;
+                });
+              },
+              child: const Icon(Icons.save),
+            )
+          : null,
+    );
+  }
+
+  void saveImage(String imageKey) {
+    FileUtils.saveTranslatedImage(ImageList.getImages()[imageKey]!);
+  }
+}

macos/Flutter/GeneratedPluginRegistrant.swift

@@ -5,10 +5,12 @@
 import FlutterMacOS
 import Foundation
 
+import connectivity_macos
 import file_selector_macos
 import path_provider_foundation
 
 func RegisterGeneratedPlugins(registry: FlutterPluginRegistry) {
+  ConnectivityPlugin.register(with: registry.registrar(forPlugin: "ConnectivityPlugin"))
   FileSelectorPlugin.register(with: registry.registrar(forPlugin: "FileSelectorPlugin"))
   PathProviderPlugin.register(with: registry.registrar(forPlugin: "PathProviderPlugin"))
 }

pubspec.lock

@@ -97,6 +97,38 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.18.0"
+  connectivity:
+    dependency: "direct main"
+    description:
+      name: connectivity
+      sha256: a8e91263cf3e25fb5cc95e19dfde4999e32a648ac3b9e8a558a28165731678f8
+      url: "https://pub.dev"
+    source: hosted
+    version: "3.0.6"
+  connectivity_for_web:
+    dependency: transitive
+    description:
+      name: connectivity_for_web
+      sha256: "01a390c1d5adc2ed1fa1f52d120c07fe9fd01166a93f965a832fd6cfc0ea6482"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.4.0+1"
+  connectivity_macos:
+    dependency: transitive
+    description:
+      name: connectivity_macos
+      sha256: "51ae08d5162eca9669b9d8951ed83ce19c5355a81149f94e4dee2740beb93628"
+      url: "https://pub.dev"
+    source: hosted
+    version: "0.2.1+2"
+  connectivity_platform_interface:
+    dependency: transitive
+    description:
+      name: connectivity_platform_interface
+      sha256: "2d82e942df9d49f29a24bb07fb5ce085d4a53e47818c62364d2b6deb9e0d7a8e"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.1"
   convert:
     dependency: transitive
     description:
@@ -256,6 +288,14 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.0"
+  fluttertoast:
+    dependency: "direct main"
+    description:
+      name: fluttertoast
+      sha256: dfdde255317af381bfc1c486ed968d5a43a2ded9c931e87cbecd88767d6a71c1
+      url: "https://pub.dev"
+    source: hosted
+    version: "8.2.4"
   glob:
     dependency: transitive
     description:
@@ -280,6 +320,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "4.0.2"
+  image_gallery_saver:
+    dependency: "direct main"
+    description:
+      name: image_gallery_saver
+      sha256: "0aba74216a4d9b0561510cb968015d56b701ba1bd94aace26aacdd8ae5761816"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.3"
   image_picker:
     dependency: "direct main"
     description:

pubspec.yaml

@@ -9,7 +9,7 @@ environment:
 dependencies:
   flutter:
     sdk: flutter
-  dio: ^4.0.0 # For making HTTP requests
+  dio: ^4.0.0
   file_picker: ^4.1.4
   image_picker:  ^0.8.1 
   cupertino_icons: ^1.0.2
@@ -17,7 +17,10 @@ dependencies:
   http: ^1.1.0
   flutter_tesseract_ocr:
   http_parser: ^4.0.2
-  #opencv_4: ^1.0.0
+  fluttertoast: ^8.0.8 
+  connectivity: ^3.0.6
+  image_gallery_saver: '^2.0.3'
+
   
 dev_dependencies:
   flutter_test:
@@ -27,14 +30,12 @@ dev_dependencies:
 
 flutter:
   assets:
-    - assets/
+    - assets/schild.png
     - assets/tessdata_config.json    
     - assets/tessdata/eng.traineddata
     - assets/tessdata/deu.traineddata
     - assets/tessdata/jpn.traineddata
-    - assets/tessdata/chi_sim.traineddata
+    - assets/tessdata/fra.traineddata
-    - assets/tessdata/ell.traineddata
-    - assets/tessdata/ara.traineddata
     - assets/tessdata/rus.traineddata
 
   uses-material-design: true

test/widget_test.dart

@@ -1,21 +1,125 @@
-import 'package:cpd_app/image_uploader.dart';
+import 'dart:io';
+import 'package:cpd_app/session_list.dart';
 import 'package:flutter_test/flutter_test.dart';
+import 'package:cpd_app/main.dart';
+import 'package:cpd_app/ocr_page.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+import 'package:image_picker/image_picker.dart';
+
+Future<Uint8List> loadImageBytesFromAssets(String imagePath) async {
+  final ByteData data = await rootBundle.load(imagePath);
+  return data.buffer.asUint8List();
+}
 
 void main() {
-  TestWidgetsFlutterBinding.ensureInitialized();
+  setUpAll(() {
+    HttpOverrides.global = null;
+  });
+  testWidgets('Check ocr UI', (WidgetTester tester) async {
+    await tester.pumpWidget(const MyApp());
 
-  test('Test OCR functionality', () async {
+    final buttonsFinder = find.byType(ElevatedButton);
-    final ImageUploader imageUploader = ImageUploader();
-    String imageName = "lorem.png";
 
-    var img = await imageUploader.buildImageFile(imageName);
+    expect(buttonsFinder, findsWidgets);
-    assert(img.lengthInBytes > 0);
+    await tester.tap(find.widgetWithText(ElevatedButton, "Image Tools"));
+    await tester.pumpAndSettle();
+    expect(find.text('OCR'), findsOneWidget);
 
-    // momentan auskommentiert, weil das pathproviderplugin irgentwie gemockt werden muss und ich es noch nicht hinbekommen habe
+    var ocrbtn = find.widgetWithText(ElevatedButton, "OCR");
-    //mock response, weil man keine http requests in tests machen kann
+    expect(ocrbtn, findsOneWidget);
-    // String mockResponse = "eng";
 
-    // String text = await imageUploader.performOcr(img, imageName, mockResponse);
+    var imgtrans = find.widgetWithText(ElevatedButton, "Image Translation");
-    // assert(text.contains("Lorem ipsum"));
+    expect(imgtrans, findsOneWidget);
+    var prev = find.widgetWithText(ElevatedButton, "Previous Images");
+    expect(prev, findsOneWidget);
+
+    await tester.tap(find.widgetWithText(ElevatedButton, "OCR"));
+    await tester.pumpAndSettle();
+
+    expect(find.text('OCR'), findsOneWidget);
+    expect(find.text('Select Image'), findsOneWidget);
+    expect(find.widgetWithText(DropdownButton<String>, 'Auto'), findsOneWidget);
+    await tester.tap(find.widgetWithText(DropdownButton<String>, 'Auto'));
+    await tester.pumpAndSettle();
+    expect(find.text('German'), findsOneWidget);
+    expect(find.text('English'), findsOneWidget);
+    expect(find.text('French'), findsOneWidget);
+    expect(find.text('Russian'), findsOneWidget);
+    await tester.tap(find.widgetWithText(DropdownMenuItem<String>, 'German'));
+    await tester.tap(find.widgetWithText(ElevatedButton, "Select Image"));
+    await tester.pump();
+
+    final ocrFinder = find.byType(OCRPage);
+    final ocrState = tester.state<OCRPageState>(ocrFinder);
+    Uint8List bytes = await loadImageBytesFromAssets('assets/schild.png');
+
+    ocrState.setState(() {
+      var image = XFile.fromData(bytes);
+      ocrState.selectedImage = image;
+    });
+    expect(ocrState.selectedImage, isNotNull);
+    await tester.pumpAndSettle();
+
+    expect(find.widgetWithText(ElevatedButton, "Extract Text"), findsOneWidget);
+  });
+  testWidgets('Check imageTranslateUI', (WidgetTester tester) async {
+    await tester.pumpWidget(const MyApp());
+    final buttonsFinder = find.byType(ElevatedButton);
+    expect(buttonsFinder, findsWidgets);
+    await tester.tap(find.widgetWithText(ElevatedButton, "Image Tools"));
+    await tester.pumpAndSettle();
+    expect(find.text('Image Translation'), findsOneWidget);
+    var btn1 = find.widgetWithText(ElevatedButton, "Image Translation");
+    expect(btn1, findsOneWidget);
+    await tester.tap(btn1);
+    await tester.pumpAndSettle();
+    expect(find.text('Image Translation'), findsOneWidget);
+    expect(
+        find.widgetWithText(DropdownButton<String>, 'English'), findsOneWidget);
+    await tester.tap(find.widgetWithText(DropdownButton<String>, 'English'));
+    await tester.pumpAndSettle();
+    expect(find.text('German'), findsExactly(2));
+    expect(find.text('English'), findsExactly(2));
+    expect(find.text('French'), findsExactly(1));
+    expect(find.text('Russian'), findsExactly(1));
+    await tester.pumpAndSettle();
+    await tester.tap(find.widgetWithText(DropdownButton<String>, 'German'));
+    expect(find.text('German'), findsExactly(2));
+    expect(find.text('English'), findsExactly(2));
+    expect(find.text('French'), findsExactly(1));
+    expect(find.text('Russian'), findsExactly(1));
+    //
+  });
+
+  testWidgets('Check listPreview', (WidgetTester tester) async {
+    ImageList.addImage(
+        "test1", await loadImageBytesFromAssets('assets/schild.png'));
+    ImageList.addImage(
+        "test2", await loadImageBytesFromAssets('assets/schild.png'));
+    ImageList.addImage(
+        "test3", await loadImageBytesFromAssets('assets/schild.png'));
+    ImageList.addImage(
+        "test3", await loadImageBytesFromAssets('assets/schild.png'));
+
+    await tester.pumpWidget(const MyApp());
+
+    final buttonsFinder = find.byType(ElevatedButton);
+    expect(buttonsFinder, findsWidgets);
+
+    await tester.tap(find.widgetWithText(ElevatedButton, "Image Tools"));
+    await tester.pumpAndSettle();
+
+    var btn1 = find.widgetWithText(ElevatedButton, "Previous Images");
+    expect(btn1, findsOneWidget);
+    await tester.tap(btn1);
+    await tester.pumpAndSettle();
+    expect(find.text('Image Gallery'), findsOneWidget);
+
+    final gridViewFinder = find.byType(GridView);
+    expect(gridViewFinder, findsOneWidget);
+
+    const numberOfEntries = 4;
+    expect(find.byType(GestureDetector), findsNWidgets(numberOfEntries));
   });
 }

windows/flutter/CMakeLists.txt

@@ -10,6 +10,11 @@ include(${EPHEMERAL_DIR}/generated_config.cmake)
 # https://github.com/flutter/flutter/issues/57146.
 set(WRAPPER_ROOT "${EPHEMERAL_DIR}/cpp_client_wrapper")
 
+# Set fallback configurations for older versions of the flutter tool.
+if (NOT DEFINED FLUTTER_TARGET_PLATFORM)
+  set(FLUTTER_TARGET_PLATFORM "windows-x64")
+endif()
+
 # === Flutter Library ===
 set(FLUTTER_LIBRARY "${EPHEMERAL_DIR}/flutter_windows.dll")
 
@@ -92,7 +97,7 @@ add_custom_command(
   COMMAND ${CMAKE_COMMAND} -E env
     ${FLUTTER_TOOL_ENVIRONMENT}
     "${FLUTTER_ROOT}/packages/flutter_tools/bin/tool_backend.bat"
-      windows-x64 $<CONFIG>
+      ${FLUTTER_TARGET_PLATFORM} $<CONFIG>
   VERBATIM
 )
 add_custom_target(flutter_assemble DEPENDS