improve ui

lib/network/download.dart

@@ -357,6 +357,7 @@ class ImagesDownloadTask extends DownloadTask with _TransferSpeedMixin {
     }
 
     LocalManager().completeTask(this);
+    stopRecorder();
   }
 
   @override
@@ -534,6 +535,9 @@ class _ImageDownloadWrapper {
         }
       }
     } catch (e, s) {
+      if (isCancelled) {
+        return;
+      }
       Log.error("Download", e.toString(), s);
       retry--;
       if (retry > 0) {

lib/network/images.dart

@@ -10,8 +10,9 @@ import 'app_dio.dart';
 
 class ImageDownloader {
   static Stream<ImageDownloadProgress> loadThumbnail(
-      String url, String? sourceKey) async* {
-    final cacheKey = "$url@$sourceKey";
+      String url, String? sourceKey,
+      [String? cid]) async* {
+    final cacheKey = "$url@$sourceKey${cid != null ? '@$cid' : ''}";
     final cache = await CacheManager().findCache(cacheKey);
 
     if (cache != null) {
@@ -34,6 +35,16 @@ class ImageDownloader {
       configs['headers']['user-agent'] = webUA;
     }
 
+    if (((configs['url'] as String?) ?? url).startsWith('cover.') &&
+        sourceKey != null) {
+      var comicSource = ComicSource.find(sourceKey);
+      if(comicSource != null) {
+        var comicInfo = await comicSource.loadComicInfo!(cid!);
+        yield* loadThumbnail(comicInfo.data.cover, sourceKey);
+        return;
+      }
+    }
+
     var dio = AppDio(BaseOptions(
       headers: Map<String, dynamic>.from(configs['headers']),
       method: configs['method'] ?? 'GET',
@@ -171,9 +182,8 @@ class ImageDownloader {
         }
         configs = newConfig;
         retryLimit--;
-      }
-      finally {
-        if(onLoadFailed != null) {
+      } finally {
+        if (onLoadFailed != null) {
           (configs['onLoadFailed'] as JSInvokable).free();
         }
       }