feat: Add animated property to thumbnails

lib/src/event.dart

@@ -438,14 +438,16 @@ class Event extends MatrixEvent {
   /// Set [getThumbnail] to true to fetch the thumbnail, set [width], [height] and [method]
   /// for the respective thumbnailing properties.
   /// [minNoThumbSize] is the minimum size that an original image may be to not fetch its thumbnail, defaults to 80k
-  /// [useThumbnailMxcUrl] says weather to use the mxc url of the thumbnail, rather than the original attachment
+  /// [useThumbnailMxcUrl] says weather to use the mxc url of the thumbnail, rather than the original attachment.
+  ///  [animated] says weather the thumbnail is animated
   String getAttachmentUrl(
       {bool getThumbnail = false,
       bool useThumbnailMxcUrl = false,
       double width = 800.0,
       double height = 800.0,
       ThumbnailMethod method = ThumbnailMethod.scale,
-      int minNoThumbSize = _minNoThumbSize}) {
+      int minNoThumbSize = _minNoThumbSize,
+      bool animated = false}) {
     if (![EventTypes.Message, EventTypes.Sticker].contains(type) ||
         !hasAttachment ||
         isAttachmentEncrypted) {
@@ -471,6 +473,7 @@ class Event extends MatrixEvent {
         width: width,
         height: height,
         method: method,
+        animated: animated,
       );
     } else {
       return Uri.parse(thisMxcUrl).getDownloadLink(room.client);

lib/src/utils/uri_extension.dart

@@ -31,15 +31,28 @@ extension MxcUriExtension on Uri {
   /// 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}) {
+      {num width,
+      num height,
+      ThumbnailMethod method = ThumbnailMethod.crop,
+      bool animated = false}) {
     if (!isScheme('mxc')) return toString();
-    final methodStr = method.toString().split('.').last;
+    if (matrix.homeserver == null) {
-    width = width.round();
+      return '';
-    height = height.round();
+    }
-    return matrix.homeserver != null
+    return Uri(
-        ? '${matrix.homeserver.toString()}/_matrix/media/r0/thumbnail/$host$path?width=$width&height=$height&method=$methodStr'
+      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();
   }
 }
 

test/event_test.dart

@@ -1104,12 +1104,12 @@ void main() {
       expect(event.getAttachmentUrl(),
           'https://fakeserver.notexisting/_matrix/media/r0/download/example.org/file');
       expect(event.getAttachmentUrl(getThumbnail: true),
-          'https://fakeserver.notexisting/_matrix/media/r0/thumbnail/example.org/file?width=800&height=800&method=scale');
+          'https://fakeserver.notexisting/_matrix/media/r0/thumbnail/example.org/file?width=800&height=800&method=scale&animated=false');
       expect(event.getAttachmentUrl(useThumbnailMxcUrl: true),
           'https://fakeserver.notexisting/_matrix/media/r0/download/example.org/thumb');
       expect(
           event.getAttachmentUrl(getThumbnail: true, useThumbnailMxcUrl: true),
-          'https://fakeserver.notexisting/_matrix/media/r0/thumbnail/example.org/thumb?width=800&height=800&method=scale');
+          'https://fakeserver.notexisting/_matrix/media/r0/thumbnail/example.org/thumb?width=800&height=800&method=scale&animated=false');
       expect(
           event.getAttachmentUrl(getThumbnail: true, minNoThumbSize: 9000000),
           'https://fakeserver.notexisting/_matrix/media/r0/download/example.org/file');

test/mxc_uri_extension_test.dart

@@ -38,11 +38,14 @@ void main() {
       expect(content.getDownloadLink(client),
           '${client.homeserver.toString()}/_matrix/media/r0/download/exampleserver.abc/abcdefghijklmn');
       expect(content.getThumbnail(client, width: 50, height: 50),
-          '${client.homeserver.toString()}/_matrix/media/r0/thumbnail/exampleserver.abc/abcdefghijklmn?width=50&height=50&method=crop');
+          '${client.homeserver.toString()}/_matrix/media/r0/thumbnail/exampleserver.abc/abcdefghijklmn?width=50&height=50&method=crop&animated=false');
       expect(
           content.getThumbnail(client,
-              width: 50, height: 50, method: ThumbnailMethod.scale),
+              width: 50,
-          '${client.homeserver.toString()}/_matrix/media/r0/thumbnail/exampleserver.abc/abcdefghijklmn?width=50&height=50&method=scale');
+              height: 50,
+              method: ThumbnailMethod.scale,
+              animated: true),
+          '${client.homeserver.toString()}/_matrix/media/r0/thumbnail/exampleserver.abc/abcdefghijklmn?width=50&height=50&method=scale&animated=true');
     });
   });
 }