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Improve the resolution of the compressed thumbnail

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This commit is contained in:
Vishnu Mohandas 2020-11-22 23:25:34 +05:30
parent 51b08a242f
commit da2cb1b2cf
2 changed files with 20 additions and 20 deletions
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14
lib/ui/thumbnail_widget.dart
View file

@ -149,19 +149,13 @@ class _ThumbnailWidgetState extends State<ThumbnailWidget> {
void _getThumbnailFromServer() {
getThumbnailFromServer(widget.file).then((file) async {
var imageProvider;
if (file.lengthSync() > THUMBNAIL_DATA_LIMIT) {
final compressed = await FlutterImageCompress.compressWithFile(
file.path,
quality: 25,
minHeight: THUMBNAIL_SMALL_SIZE,
minWidth: THUMBNAIL_SMALL_SIZE,
);
imageProvider = Image.memory(compressed).image;
} else {
imageProvider = Image.file(file).image;
_logger.warning(widget.file.title +
" has a thumbnail of size " +
file.lengthSync().toString());
}
if (mounted) {
final imageProvider = Image.file(file).image;
precacheImage(imageProvider, context).then((value) {
if (mounted) {
setState(() {

26
lib/utils/file_util.dart
View file

@ -241,9 +241,6 @@ Future<io.File> _downloadAndDecrypt(File file, BaseCacheManager cacheManager,
}
Future<io.File> _downloadAndDecryptThumbnail(File file) async {
_logger.info("Downloading thumbnail for " + file.uploadedFileID.toString());
_logger.info("Downloads in progress " +
thumbnailDownloadsInProgress.length.toString());
final temporaryPath = Configuration.instance.getTempDirectory() +
file.generatedID.toString() +
"_thumbnail.decrypted";
@ -258,13 +255,13 @@ Future<io.File> _downloadAndDecryptThumbnail(File file) async {
thumbnailDecryptionKey,
Sodium.base642bin(file.thumbnailDecryptionHeader),
);
if (data.length > THUMBNAIL_DATA_LIMIT) {
data = await FlutterImageCompress.compressWithList(
data,
quality: 50,
minHeight: THUMBNAIL_SMALL_SIZE,
minWidth: THUMBNAIL_SMALL_SIZE,
);
final thumbnailSize = data.length;
if (thumbnailSize > THUMBNAIL_DATA_LIMIT) {
data = await compressThumbnail(data);
_logger.info("Compressed thumbnail from " +
thumbnailSize.toString() +
" to " +
data.length.toString());
}
encryptedFile.deleteSync();
final cachedThumbnail = ThumbnailCacheManager().putFile(
@ -288,3 +285,12 @@ Uint8List decryptFileKey(File file) {
CollectionsService.instance.getCollectionKey(file.collectionID);
return CryptoUtil.decryptSync(encryptedKey, collectionKey, nonce);
}
Future<Uint8List> compressThumbnail(Uint8List thumbnail) {
return FlutterImageCompress.compressWithList(
thumbnail,
minHeight: 1080,
minWidth: 1080,
quality: 25,
);
}