+void MainWindow::zoom_current_view(double steps)
+{
+ shared_ptr<Session> session = get_tab_session(session_selector_.currentIndex());
+
+ if (!session)
+ return;
+
+ shared_ptr<views::ViewBase> v = session.get()->main_view();
+ views::trace::View *tv =
+ qobject_cast<views::trace::View*>(v.get());
+ tv->zoom(steps);
+}
+