From: Mikko Rasa <tdb@tdb.fi>
Date: Wed, 31 Aug 2016 08:30:26 +0000 (+0300)
Subject: Allow an empty graphic to be specified in part definitions
X-Git-Url: http://git.tdb.fi/?p=libs%2Fgltk.git;a=commitdiff_plain;h=202abf876bc54c0f82c1afcd26b3b79fd1cd4815

Allow an empty graphic to be specified in part definitions

It can be used to cancel out a graphic for specific states.
---

diff --git a/source/part.cpp b/source/part.cpp
index 4726b4c..72c8921 100644
--- a/source/part.cpp
+++ b/source/part.cpp
@@ -65,7 +65,7 @@ void Part::Loader::graphic_normal(const string &n)
 
 void Part::Loader::graphic(State s, const string &n)
 {
-	Graphic *grph = &get_collection().get<Graphic>(n);
+	Graphic *grph = (n.empty() ? 0 : &get_collection().get<Graphic>(n));
 	for(int i=0; i<N_STATES_; ++i)
 		if((i&s)==s)
 			obj.graphic[i] = grph;