//@dart=2.12 import 'package:matrix/matrix.dart'; import 'resize_image.dart'; extension RoomSendFileExtension on Room { Future sendFileEventWithThumbnail( MatrixFile file, { String? txid, Event? inReplyTo, String? editEventId, bool? waitUntilSent, }) async { MatrixImageFile? thumbnail; if (file is MatrixImageFile) { thumbnail = await file.resizeImage(); if (thumbnail.size > file.size ~/ 2) { thumbnail = null; } } return sendFileEvent( file, txid: txid, inReplyTo: inReplyTo, editEventId: editEventId, waitUntilSent: waitUntilSent ?? false, thumbnail: thumbnail, ); } }