X-Git-Url: https://git.carlh.net/gitweb/?a=blobdiff_plain;f=gtk2_ardour%2Fport_matrix.cc;h=40cc80a35014c0fc544b5b66eeb29d7ade40358a;hb=62a2d6a0647cd636f8711acceccc22142bb899aa;hp=9a22ed97e67eeb58eb3d513fb7b7c3be0944c3e7;hpb=ffde2fb5f982856afd9a569d9571b954032f0894;p=ardour.git

diff --git a/gtk2_ardour/port_matrix.cc b/gtk2_ardour/port_matrix.cc
index 9a22ed97e6..40cc80a350 100644
--- a/gtk2_ardour/port_matrix.cc
+++ b/gtk2_ardour/port_matrix.cc
@@ -152,8 +152,7 @@ PortMatrix::init ()
 	_session->RouteAdded.connect (_session_connections, invalidator (*this), boost::bind (&PortMatrix::routes_changed, this), gui_context());
 
 	/* and also bundles */
-	_session->BundleAdded.connect (_session_connections, invalidator (*this), boost::bind (&PortMatrix::setup_global_ports, this), gui_context());
-	_session->BundleRemoved.connect (_session_connections, invalidator (*this), boost::bind (&PortMatrix::setup_global_ports, this), gui_context());
+	_session->BundleAddedOrRemoved.connect (_session_connections, invalidator (*this), boost::bind (&PortMatrix::setup_global_ports, this), gui_context());
 
 	/* and also ports */
 	_session->engine().PortRegisteredOrUnregistered.connect (_session_connections, invalidator (*this), boost::bind (&PortMatrix::setup_global_ports, this), gui_context());
@@ -249,17 +248,26 @@ PortMatrix::setup_scrollbars ()
 {
 	Adjustment* a = _hscroll.get_adjustment ();
 	a->set_lower (0);
-	a->set_upper (_body->full_scroll_width());
 	a->set_page_size (_body->alloc_scroll_width());
 	a->set_step_increment (32);
 	a->set_page_increment (128);
 
+	/* Set the adjustment to zero if the size has changed.*/
+	if (a->get_upper() != _body->full_scroll_width()) {
+		a->set_upper (_body->full_scroll_width());
+		a->set_value (0);
+	}
+
 	a = _vscroll.get_adjustment ();
 	a->set_lower (0);
-	a->set_upper (_body->full_scroll_height());
 	a->set_page_size (_body->alloc_scroll_height());
 	a->set_step_increment (32);
 	a->set_page_increment (128);
+
+	if (a->get_upper() != _body->full_scroll_height()) {
+		a->set_upper (_body->full_scroll_height());
+		a->set_value (0);
+	}
 }
 
 /** Disassociate all of our ports from each other */
@@ -610,6 +618,7 @@ PortMatrix::disassociate_all_on_channel (boost::weak_ptr<Bundle> bundle, uint32_
 void
 PortMatrix::setup_global_ports ()
 {
+	if (!_session || _session->deletion_in_progress()) return;
 	ENSURE_GUI_THREAD (*this, &PortMatrix::setup_global_ports)
 
 	for (int i = 0; i < 2; ++i) {
@@ -1138,7 +1147,7 @@ PortMatrix::get_association (PortMatrixNode node) const
 
 	}
 
-	/* NOTREACHED */
+	abort(); /* NOTREACHED */
 	return PortMatrixNode::NOT_ASSOCIATED;
 }