fix ui

lib/appdata.dart

@@ -18,7 +18,7 @@ class _Appdata {
     "downloadSubPath": r"/${id}-p${index}.${ext}",
     "tagsWeight": "",
     "useTranslatedNameForDownload": false,
-    "maxDownloadParallels": 3
+    "maxParallels": 3
   };
 
   bool lock = false;
@@ -54,9 +54,11 @@ class _Appdata {
     if (settingsFile.existsSync()) {
       var json = jsonDecode(await settingsFile.readAsString());
       for (var key in json.keys) {
+        if(json[key] != null) {
           settings[key] = json[key];
         }
       }
+    }
     if (settings["downloadPath"] == null) {
       settings["downloadPath"] = await _defaultDownloadPath;
     }

lib/foundation/image_provider.dart

@@ -148,6 +148,10 @@ class CachedImageProvider extends BaseImageProvider<CachedImageProvider> {
 
   @override
   Future<Uint8List> load(StreamController<ImageChunkEvent> chunkEvents) async{
+    chunkEvents.add(const ImageChunkEvent(
+      cumulativeBytesLoaded: 0,
+      expectedTotalBytes: 1,
+    ));
     var cached = await CacheManager().findCache(key);
     if(cached != null) {
       chunkEvents.add(const ImageChunkEvent(

lib/pages/image_page.dart

@@ -118,13 +118,25 @@ class _ImagePageState extends State<ImagePage> with WindowListener {
     return File(res);
   }
 
+  String getExtensionName() {
+    var fileName = widget.url.split('/').last;
+    if(fileName.contains('.')){
+      return '.${fileName.split('.').last}';
+    }
+    return '.jpg';
+  }
+
   void showMenu() {
     menuController.showFlyout(builder: (context) => MenuFlyout(
       items: [
         MenuFlyoutItem(text: Text("Save to".tl), onPressed: () async{
           var file = await getFile();
           if(file != null){
-            saveFile(file);
+            var fileName = file.path.split('/').last;
+            if(!fileName.contains('.')){
+              fileName += getExtensionName();
+            }
+            saveFile(file, fileName);
           }
         }),
         MenuFlyoutItem(text: Text("Share".tl), onPressed: () async{
@@ -133,12 +145,12 @@ class _ImagePageState extends State<ImagePage> with WindowListener {
             var fileName = file.path.split('/').last;
             String ext;
             if(!fileName.contains('.')){
-              ext = 'jpg';
-              fileName += '.jpg';
+              ext = getExtensionName();
+              fileName += getExtensionName();
             } else {
               ext = file.path.split('.').last;
             }
-            var mediaType = switch(ext){
+            var mediaType = switch(ext.replaceFirst('.', "")){
               'jpg' => 'image/jpeg',
               'jpeg' => 'image/jpeg',
               'png' => 'image/png',

lib/utils/io.dart

@@ -50,11 +50,11 @@ String bytesToText(int bytes) {
   }
 }
 
-void saveFile(File file) async{
+void saveFile(File file, [String? name]) async{
   if(App.isDesktop) {
     var fileName = file.path.split('/').last;
     final FileSaveLocation? result =
-    await getSaveLocation(suggestedName: fileName);
+    await getSaveLocation(suggestedName: name ?? fileName);
     if (result == null) {
       return;
     }
@@ -62,10 +62,10 @@ void saveFile(File file) async{
     final Uint8List fileData = await file.readAsBytes();
     String mimeType = 'image/${fileName.split('.').last}';
     final XFile textFile = XFile.fromData(
-        fileData, mimeType: mimeType, name: fileName);
+        fileData, mimeType: mimeType, name: name ?? fileName);
     await textFile.saveTo(result.path);
   } else {
-    final params = SaveFileDialogParams(sourceFilePath: file.path);
+    final params = SaveFileDialogParams(sourceFilePath: file.path, fileName: name);
     await FlutterFileDialog.saveFile(params: params);
   }
 }

pubspec.yaml

@@ -107,7 +107,7 @@ flutter:
   # see https://flutter.dev/custom-fonts/#from-packages
 
   # font used for building windows application
-  fonts:
-    - family: font
-      fonts:
-        - asset: assets/SourceHanSansSC-Regular.otf
+  #fonts:
+  #  - family: font
+  #    fonts:
+  #      - asset: assets/SourceHanSansSC-Regular.otf