nyne/venera
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download & view local comics

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nyne
2024-10-14 11:10:24 +08:00
parent 5a3537657a
commit c0a0dc59e1
20 changed files with 1467 additions and 158 deletions
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57
lib/foundation/image_provider/cached_image.dart
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@@ -1,10 +1,7 @@
import 'dart:async' show Future, StreamController;
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:venera/foundation/cache_manager.dart';
import 'package:venera/foundation/comic_source/comic_source.dart';
import 'package:venera/foundation/consts.dart';
import 'package:venera/network/app_dio.dart';
import 'package:venera/network/images.dart';
import 'base_image_provider.dart';
import 'cached_image.dart' as image_provider;
@@ -21,52 +18,16 @@ class CachedImageProvider
@override
Future<Uint8List> load(StreamController<ImageChunkEvent> chunkEvents) async {
final cacheKey = "$url@$sourceKey";
final cache = await CacheManager().findCache(cacheKey);
if (cache != null) {
return await cache.readAsBytes();
}
var configs = <String, dynamic>{};
if (sourceKey != null) {
var comicSource = ComicSource.find(sourceKey!);
configs = comicSource!.getThumbnailLoadingConfig?.call(url) ?? {};
}
configs['headers'] ??= {
'user-agent': webUA,
};
var dio = AppDio(BaseOptions(
headers: configs['headers'],
method: configs['method'] ?? 'GET',
responseType: ResponseType.stream,
));
var req = await dio.request<ResponseBody>(configs['url'] ?? url,
data: configs['data']);
var stream = req.data?.stream ?? (throw "Error: Empty response body.");
int? expectedBytes = req.data!.contentLength;
if (expectedBytes == -1) {
expectedBytes = null;
}
var buffer = <int>[];
await for (var data in stream) {
buffer.addAll(data);
if (expectedBytes != null) {
chunkEvents.add(ImageChunkEvent(
cumulativeBytesLoaded: buffer.length,
expectedTotalBytes: expectedBytes,
));
await for (var progress in ImageDownloader.loadThumbnail(url, sourceKey)) {
chunkEvents.add(ImageChunkEvent(
cumulativeBytesLoaded: progress.currentBytes,
expectedTotalBytes: progress.totalBytes,
));
if(progress.imageBytes != null) {
return progress.imageBytes!;
}
}
if(configs['onResponse'] != null) {
buffer = configs['onResponse'](buffer);
}
await CacheManager().writeCache(cacheKey, buffer);
return Uint8List.fromList(buffer);
throw "Error: Empty response body.";
}
@override