From cf761d4f67d04970604948caa860ce193695dc1c Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Sun, 27 Sep 2015 01:33:02 +0200
Subject: fix mixer group-tab width - #6572

EditorGroupTabs are re-exposed in the idle-callback, widgets
are packed and geometry is valid.

Mixer_UI::redisplay_track_list() does not have this property.
---
 gtk2_ardour/mixer_group_tabs.cc | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'gtk2_ardour/mixer_group_tabs.cc')

diff --git a/gtk2_ardour/mixer_group_tabs.cc b/gtk2_ardour/mixer_group_tabs.cc
index 7d8bb99b48..e7d82ae708 100644
--- a/gtk2_ardour/mixer_group_tabs.cc
+++ b/gtk2_ardour/mixer_group_tabs.cc
@@ -83,7 +83,9 @@ MixerGroupTabs::compute_tabs () const
 			}
 		}
 
-		x += s->get_width ();
+		int ww = 0, wh = 0;
+		s->get_size_request (ww, wh); // widget may not be realized, get_width() is invalid.
+		x += ww;
 	}
 
 	if (tab.group) {
-- 
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