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Improve image loading

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nyne
2025-01-16 17:51:43 +08:00
parent 5d1d62e157
commit c640e6bfbf
13 changed files with 144 additions and 35 deletions
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19
lib/foundation/image_provider/image_favorites_provider.dart
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@@ -1,5 +1,4 @@
import 'dart:async' show Future, StreamController;
import 'dart:io';
import 'package:crypto/crypto.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
@@ -29,30 +28,36 @@ class ImageFavoritesProvider
String get eid => imageFavorite.eid;
@override
Future<Uint8List> load(StreamController<ImageChunkEvent>? chunkEvents) async {
Future<Uint8List> load(
StreamController<ImageChunkEvent>? chunkEvents,
void Function()? checkStop,
) async {
var imageKey = imageFavorite.imageKey;
var localImage = await getImageFromLocal();
checkStop?.call();
if (localImage != null) {
return localImage;
}
var cacheImage = await readFromCache();
checkStop?.call();
if (cacheImage != null) {
return cacheImage;
}
var gotImageKey = false;
if (imageKey == "") {
imageKey = await getImageKey();
checkStop?.call();
gotImageKey = true;
}
Uint8List image;
try {
image = await getImageFromNetwork(imageKey, chunkEvents);
image = await getImageFromNetwork(imageKey, chunkEvents, checkStop);
} catch (e) {
if (gotImageKey) {
rethrow;
} else {
imageKey = await getImageKey();
image = await getImageFromNetwork(imageKey, chunkEvents);
image = await getImageFromNetwork(imageKey, chunkEvents, checkStop);
}
}
await writeToCache(image);
@@ -106,9 +111,13 @@ class ImageFavoritesProvider
}
Future<Uint8List> getImageFromNetwork(
String imageKey, StreamController<ImageChunkEvent>? chunkEvents) async {
String imageKey,
StreamController<ImageChunkEvent>? chunkEvents,
void Function()? checkStop,
) async {
await for (var progress
in ImageDownloader.loadComicImage(imageKey, sourceKey, cid, eid)) {
checkStop?.call();
if (chunkEvents != null) {
chunkEvents.add(ImageChunkEvent(
cumulativeBytesLoaded: progress.currentBytes,