From c993e2d37bf9f3269bbbe5e47ee391805354206d Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Sun, 31 Aug 2014 07:12:21 +0200
Subject: [PATCH] update track-header width when track-number visibility is
 toggled

---
 gtk2_ardour/ardour_ui_options.cc | 7 +++++++
 gtk2_ardour/route_time_axis.cc   | 1 +
 2 files changed, 8 insertions(+)

diff --git a/gtk2_ardour/ardour_ui_options.cc b/gtk2_ardour/ardour_ui_options.cc
index a1c971bc4e..a8be3ccd0c 100644
--- a/gtk2_ardour/ardour_ui_options.cc
+++ b/gtk2_ardour/ardour_ui_options.cc
@@ -435,6 +435,13 @@ ARDOUR_UI::session_parameter_changed (std::string p)
 		synchronize_sync_source_and_video_pullup ();
 		reset_main_clocks ();
 		editor->queue_visual_videotimeline_update();
+	} else if (p == "track-name-number") {
+		/* DisplaySuspender triggers _route->redisplay() when going out of scope
+		 * which eventually calls reset_controls_layout_width() and re-sets the
+		 * track-header width.
+		 * see also RouteTimeAxisView::update_track_number_visibility()
+		 */
+		DisplaySuspender ds;
 	}
 }
 
diff --git a/gtk2_ardour/route_time_axis.cc b/gtk2_ardour/route_time_axis.cc
index bc86a79c14..6ea0af9a50 100644
--- a/gtk2_ardour/route_time_axis.cc
+++ b/gtk2_ardour/route_time_axis.cc
@@ -374,6 +374,7 @@ RouteTimeAxisView::label_view ()
 void
 RouteTimeAxisView::update_track_number_visibility ()
 {
+	DisplaySuspender ds;
 	bool show_label = _session->config.get_track_name_number();
 
 	if (_route && _route->is_master()) {