matrix-dart-sdk/lib/src/utils/uri_extension.dart

60 lines
2.2 KiB
Dart

/*
* Famedly Matrix SDK
* Copyright (C) 2019, 2020, 2021 Famedly GmbH
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
import 'dart:core';
import '../client.dart';
extension MxcUriExtension on Uri {
/// Returns a download Link to this content.
String getDownloadLink(Client matrix) => isScheme('mxc')
? matrix.homeserver != null
? '${matrix.homeserver.toString()}/_matrix/media/r0/download/$host$path'
: ''
: toString();
/// Returns a scaled thumbnail link to this content with the given [width] and
/// [height]. [method] can be [ThumbnailMethod.crop] or
/// [ThumbnailMethod.scale] and defaults to [ThumbnailMethod.scale].
/// If [animated] (default false) is set to true, an animated thumbnail is requested
/// as per MSC2705. Thumbnails only animate if the media repository supports that.
String getThumbnail(Client matrix,
{num width,
num height,
ThumbnailMethod method = ThumbnailMethod.crop,
bool animated = false}) {
if (!isScheme('mxc')) return toString();
if (matrix.homeserver == null) {
return '';
}
return Uri(
scheme: matrix.homeserver.scheme,
host: matrix.homeserver.host,
path: '/_matrix/media/r0/thumbnail/$host$path',
queryParameters: {
if (width != null) 'width': width.round().toString(),
if (height != null) 'height': height.round().toString(),
if (method != null) 'method': method.toString().split('.').last,
if (animated != null) 'animated': animated.toString(),
},
).toString();
}
}
enum ThumbnailMethod { crop, scale }