=== modified file 'src/ui/widget/rotateable.cpp'
--- src/ui/widget/rotateable.cpp	2017-03-12 22:32:28.000000000 +0500
+++ src/ui/widget/rotateable.cpp	2017-03-13 17:54:18.207434889 +0500
@@ -34,6 +34,7 @@ Rotateable::Rotateable():
     signal_button_press_event().connect(sigc::mem_fun(*this, &Rotateable::on_click));
     signal_motion_notify_event().connect(sigc::mem_fun(*this, &Rotateable::on_motion));
     signal_button_release_event().connect(sigc::mem_fun(*this, &Rotateable::on_release));
+    gtk_widget_add_events(GTK_WIDGET(gobj()), GDK_SCROLL_MASK);
     signal_scroll_event().connect(sigc::mem_fun(*this, &Rotateable::on_scroll));
 
 }