lots of debug code still in place, but get a much improved structure for MIDI automation menus actually working. tweaks to follow

git-svn-id: svn://localhost/ardour2/branches/3.0@6470 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 15 insertions, 2 deletions

diff --git a/gtk2_ardour/automation_time_axis.cc b/gtk2_ardour/automation_time_axis.cc
index 5cb26a6435..1046588fb3 100644
--- a/gtk2_ardour/automation_time_axis.cc
+++ b/gtk2_ardour/automation_time_axis.cc
@@ -454,8 +454,10 @@ AutomationTimeAxisView::set_height (uint32_t h)
 	}
 
 	if (changed) {
-		/* only emit the signal if the height really changed */
-		_route->gui_changed ("visible_tracks", (void *) 0); /* EMIT_SIGNAL */
+		if (canvas_item_visible (_canvas_display)) {
+			/* only emit the signal if the height really changed and we were visible */
+			_route->gui_changed ("visible_tracks", (void *) 0); /* EMIT_SIGNAL */
+		}
 	}
 }
 
@@ -928,3 +930,14 @@ AutomationTimeAxisView::hide ()
 	TimeAxisView::hide ();
 }
 
+bool
+AutomationTimeAxisView::set_visibility (bool yn)
+{
+	bool changed = TimeAxisView::set_visibility (yn);
+
+	if (changed) {
+		get_state_node()->add_property ("shown", yn ? X_("yes") : X_("no"));
+	}
+
+	return changed;
+}