Allow sending hidden RRs

Signed-off-by: Šimon Brandner <simon.bra.ag@gmail.com>

src/components/structures/TimelinePanel.tsx

@@ -758,16 +758,20 @@ class TimelinePanel extends React.Component<IProps, IState> {
             }
             this.lastRMSentEventId = this.state.readMarkerEventId;
 
+            const roomId = this.props.timelineSet.room.roomId;
+            const hiddenRR = !SettingsStore.getValue("sendReadReceipts", roomId);
+
             debuglog('TimelinePanel: Sending Read Markers for ',
                 this.props.timelineSet.room.roomId,
                 'rm', this.state.readMarkerEventId,
                 lastReadEvent ? 'rr ' + lastReadEvent.getId() : '',
+                ' hidden:' + hiddenRR,
             );
             MatrixClientPeg.get().setRoomReadMarkers(
-                this.props.timelineSet.room.roomId,
+                roomId,
                 this.state.readMarkerEventId,
                 lastReadEvent, // Could be null, in which case no RR is sent
-                {},
+                { hidden: hiddenRR },
             ).catch((e) => {
                 // /read_markers API is not implemented on this HS, fallback to just RR
                 if (e.errcode === 'M_UNRECOGNIZED' && lastReadEvent) {