fixed processing of custom fonts René GARCIA <rene@margar.fr>

git-svn-id: svn://svn.oetiker.ch/rrdtool/trunk/program@1500 a5681a0c-68f1-0310-ab6d-d61299d08faa

diff --git a/src/rrd_graph.c b/src/rrd_graph.c
index 08d0815..cb0627c 100644 (file)
--- a/src/rrd_graph.c
+++ b/src/rrd_graph.c
@@ -3678,11 +3678,17 @@ rrd_info_t *rrd_graph_v(
 static void 
 rrd_set_font_desc (
     image_desc_t *im,int prop,char *font, double size ){
-    strncpy(im->text_prop[prop].font, font, sizeof(text_prop[prop].font) - 1);        
-    im->text_prop[prop].font[sizeof(text_prop[prop].font) - 1] = '\0';   
-    im->text_prop[prop].size = size;
-    im->text_prop[prop].font_desc =   pango_font_description_from_string( font );
-    pango_font_description_set_size(im->text_prop[prop].font_desc, size * PANGO_SCALE);
+    if (font){
+        strncpy(im->text_prop[prop].font, font, sizeof(text_prop[prop].font) - 1);        
+        im->text_prop[prop].font[sizeof(text_prop[prop].font) - 1] = '\0';   
+        im->text_prop[prop].font_desc = pango_font_description_from_string( font );        
+    };
+    if (size > 0){  
+        im->text_prop[prop].size = size;
+    };
+    if (im->text_prop[prop].font_desc && im->text_prop[prop].size ){
+        pango_font_description_set_size(im->text_prop[prop].font_desc, im->text_prop[prop].size * PANGO_SCALE);
+    };
 }
 
 void rrd_graph_init(