prevent edit pane handle from being lost on GTKOSX when its moved into the notebook tabs. hack, or what?

git-svn-id: svn://localhost/ardour2/branches/2.0-ongoing@5991 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 25 insertions, 0 deletions

diff --git a/gtk2_ardour/editor.cc b/gtk2_ardour/editor.cc
index 7a8340bfad..4c00c0cfe2 100644
--- a/gtk2_ardour/editor.cc
+++ b/gtk2_ardour/editor.cc
@@ -196,6 +196,27 @@ DragInfo::clear_copied_locations ()
 	copied_locations.clear ();
 }
 
+#ifdef GTKOSX
+static void
+pane_size_watcher (Paned* pane)
+{
+	/* if the handle of a pane vanishes into (at least) the tabs of a notebook,
+	   it is no longer accessible. so stop that. this doesn't happen on X11,
+	   just the quartz backend.
+	   
+	   ugh.
+	*/
+
+	int max_width_of_lhs = GTK_WIDGET(pane->gobj())->allocation.width - 25;
+
+	gint pos = pane->get_position ();
+
+	if (pos > max_width_of_lhs) {
+		pane->set_position (max_width_of_lhs);
+	}
+}
+#endif
+
 Editor::Editor ()
 	: 
 	  /* time display buttons */
@@ -722,6 +743,10 @@ Editor::Editor ()
 	edit_pane.pack2 (the_notebook, false, true);
 	
 	edit_pane.signal_size_allocate().connect (bind (mem_fun(*this, &Editor::pane_allocation_handler), static_cast<Paned*> (&edit_pane)));
+#ifdef GTKOSX
+	Glib::PropertyProxy<int> proxy = edit_pane.property_position();
+	proxy.signal_changed().connect (bind (sigc::ptr_fun (pane_size_watcher), static_cast<Paned*> (&edit_pane)));
+#endif
 
 	top_hbox.pack_start (toolbar_frame, true, true);