From 47f59aaad7a5ab8c189905544a761940ae9f8509 Mon Sep 17 00:00:00 2001
From: David Robillard <d@drobilla.net>
Date: Sun, 18 Mar 2007 02:11:51 +0000
Subject: Improved automata diagram drawing (include notes, use standard
 initial note notation). Made compilation without Jack possible.

git-svn-id: http://svn.drobilla.net/lad/machina@363 a436a847-0d15-0410-975c-d299462d15a1
---
 src/gui/MachinaCanvas.cpp | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'src/gui/MachinaCanvas.cpp')

diff --git a/src/gui/MachinaCanvas.cpp b/src/gui/MachinaCanvas.cpp
index c7d9843..34db1c1 100644
--- a/src/gui/MachinaCanvas.cpp
+++ b/src/gui/MachinaCanvas.cpp
@@ -194,6 +194,9 @@ MachinaCanvas::build(SharedPtr<Machina::Machine> machine)
 {
 	destroy();
 
+	if (!machine)
+		return;
+
 	std::map<SharedPtr<Machina::Node>, SharedPtr<NodeView> > views;
 
 	for (Machina::Machine::Nodes::const_iterator i = machine->nodes().begin();
-- 
cgit v1.2.1