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prevent too many image loading at save time

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nyne
2024-11-30 21:30:39 +08:00
committed by nyne
parent 873cbd779e
commit a868fe3fff
1 changed files with 24 additions and 11 deletions
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35
lib/foundation/image_provider/cached_image.dart
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@@ -21,22 +21,35 @@ class CachedImageProvider
final String? cid;
static int loadingCount = 0;
static const _kMaxLoadingCount = 8;
@override
Future<Uint8List> load(StreamController<ImageChunkEvent> chunkEvents) async {
if(url.startsWith("file://")) {
var file = File(url.substring(7));
return file.readAsBytes();
while(loadingCount > _kMaxLoadingCount) {
await Future.delayed(const Duration(milliseconds: 100));
}
await for (var progress in ImageDownloader.loadThumbnail(url, sourceKey, cid)) {
chunkEvents.add(ImageChunkEvent(
cumulativeBytesLoaded: progress.currentBytes,
expectedTotalBytes: progress.totalBytes,
));
if(progress.imageBytes != null) {
return progress.imageBytes!;
loadingCount++;
try {
if(url.startsWith("file://")) {
var file = File(url.substring(7));
return file.readAsBytes();
}
await for (var progress in ImageDownloader.loadThumbnail(url, sourceKey, cid)) {
chunkEvents.add(ImageChunkEvent(
cumulativeBytesLoaded: progress.currentBytes,
expectedTotalBytes: progress.totalBytes,
));
if(progress.imageBytes != null) {
return progress.imageBytes!;
}
}
throw "Error: Empty response body.";
}
finally {
loadingCount--;
}
throw "Error: Empty response body.";
}
@override