Prevent FOUC

include/ChatPage.h

@@ -96,6 +96,7 @@ private:
         TextInputWidget *text_input_;
         TypingDisplay *typingDisplay_;
 
+        QTimer *consensusTimer_;
         QTimer *sync_timer_;
         int sync_interval_;
 

include/TimelineView.h

@@ -97,6 +97,9 @@ public slots:
         // Add old events at the top of the timeline.
         void addBackwardsEvents(const QString &room_id, const RoomMessages &msgs);
 
+        // Whether or not the initial batch has been loaded.
+        bool hasLoaded();
+
 signals:
         void updateLastTimelineMessage(const QString &user, const DescInfo &info);
 
@@ -163,3 +166,9 @@ TimelineView::isDuplicate(const QString &event_id)
 {
         return eventIds_.contains(event_id);
 }
+
+inline bool
+TimelineView::hasLoaded()
+{
+        return scroll_layout_->count() > 1 || isTimelineFinished;
+}

include/TimelineViewManager.h

@@ -47,6 +47,9 @@ public:
         void sync(const Rooms &rooms);
         void clearAll();
 
+        // Check if all the timelines have been loaded.
+        bool hasLoaded() const;
+
         static QString chooseRandomColor();
         static QString displayName(const QString &userid);