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fix: Better thumbnails

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This checks if the image is png or
jpg and therefore doesnt remove
transparancy. It also encodes
thumbnails with higher resolution
to make them less ugly.
This commit is contained in:
Krille Fear 2021-12-12 12:03:58 +01:00
parent 5e51a53c38
commit 768720e22d
2 changed files with 15 additions and 7 deletions
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2
lib/pages/chat/send_file_dialog.dart
View file

@ -36,7 +36,7 @@ class _SendFileDialogState extends State<SendFileDialog> {
if (file is MatrixImageFile &&
!origImage &&
file.bytes.length > minSizeToCompress) {
file = await file.resizeImage(quality: 40, max: 1200);
file = await file.resizeImage();
}
await widget.room.sendFileEventWithThumbnail(file);
}

20
lib/utils/resize_image.dart
View file

@ -10,8 +10,8 @@ import 'package:image/image.dart';
import 'package:matrix/matrix.dart';
extension ResizeImage on MatrixFile {
static const int max = 800;
static const int quality = 20;
static const int max = 1200;
static const int quality = 40;
Future<MatrixImageFile> resizeImage({
bool calcBlurhash = true,
@ -23,7 +23,8 @@ extension ResizeImage on MatrixFile {
: await compute<_ResizeBytesConfig, Uint8List>(
resizeBytes,
_ResizeBytesConfig(
this.bytes,
bytes: this.bytes,
mimeType: mimeType,
max: max,
quality: quality,
));
@ -55,17 +56,24 @@ Future<Uint8List> resizeBytes(_ResizeBytesConfig config) async {
: copyResize(image, height: config.max);
}
return Uint8List.fromList(encodeJpg(image, quality: config.quality));
const pngMimeType = 'image/png';
final encoded = config.mimeType.toLowerCase() == pngMimeType
? encodePng(image)
: encodeJpg(image, quality: config.quality);
return Uint8List.fromList(encoded);
}
class _ResizeBytesConfig {
final Uint8List bytes;
final int max;
final int quality;
final String mimeType;
const _ResizeBytesConfig(
this.bytes, {
const _ResizeBytesConfig({
required this.bytes,
this.max = ResizeImage.max,
this.quality = ResizeImage.quality,
required this.mimeType,
});
}