Mini-timeline: honor left/right scroll

diff --git a/gtk2_ardour/mini_timeline.cc b/gtk2_ardour/mini_timeline.cc
index a49999862e21973dac26336b033213980c14fb59..6d77999491e173d7980dea1be748d03fa3d32f42 100644 (file)
--- a/gtk2_ardour/mini_timeline.cc
+++ b/gtk2_ardour/mini_timeline.cc
@@ -671,9 +671,11 @@ MiniTimeline::on_scroll_event (GdkEventScroll *ev)
 
        switch (ev->direction) {
                case GDK_SCROLL_UP:
+               case GDK_SCROLL_RIGHT:
                        when += scale * _session->nominal_frame_rate ();
                        break;
                case GDK_SCROLL_DOWN:
+               case GDK_SCROLL_LEFT:
                        when -= scale * _session->nominal_frame_rate ();
                        break;
                default: