Handle room avatars in top bar without an icon

include/TopRoomBar.h

@@ -39,6 +39,7 @@ public:
 	inline void updateRoomAvatar(const QIcon &icon);
 	inline void updateRoomName(const QString &name);
 	inline void updateRoomTopic(const QString &topic);
+	void updateRoomAvatarFromName(const QString &name);
 
 	void reset();
 

src/ChatPage.cc

@@ -292,6 +292,8 @@ void ChatPage::changeTopRoomInfo(const RoomInfo &info)
 	if (room_avatars_.contains(info.id())) {
 		QIcon icon(room_avatars_.value(info.id()));
 		top_bar_->updateRoomAvatar(icon);
+	} else {
+		top_bar_->updateRoomAvatarFromName(info.name());
 	}
 
 	current_room_ = info;

src/TopRoomBar.cc

@@ -77,6 +77,16 @@ TopRoomBar::TopRoomBar(QWidget *parent)
 	setLayout(top_layout_);
 }
 
+void TopRoomBar::updateRoomAvatarFromName(const QString &name)
+{
+	QChar letter = '?';
+
+	if (name.size() > 0)
+		letter = name[0];
+
+	avatar_->setLetter(letter);
+}
+
 void TopRoomBar::reset()
 {
 	name_label_->setText("");