[gnome-font-viewer] font-view: use basename in header bar when no family name

[Cosimo Cecchi <cosimoc src gnome org>]

commit 519715d9b036563e467c813f69fbefff2042d89d
Author: Cosimo Cecchi <cosimoc gnome org>
Date:   Sun Dec 1 15:25:36 2019 -0800

    font-view: use basename in header bar when no family name
    
    Instead of displaying an empty header bar, fall back to the basename
    of the file we're viewing.

 src/font-view.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)
---
diff --git a/src/font-view.c b/src/font-view.c
index 2c7e02d..26679cb 100644
--- a/src/font-view.c
+++ b/src/font-view.c
@@ -1033,7 +1033,13 @@ font_widget_loaded_cb (SushiFontWidget *font_widget,
     uri = sushi_font_widget_get_uri (font_widget);
     self->font_file = g_file_new_for_uri (uri);
 
-    gtk_header_bar_set_title (GTK_HEADER_BAR (self->header), face->family_name);
+    if (face->family_name) {
+        gtk_header_bar_set_title (GTK_HEADER_BAR (self->header), face->family_name);
+    } else {
+        g_autofree gchar *basename = g_file_get_basename (self->font_file);
+        gtk_header_bar_set_title (GTK_HEADER_BAR (self->header), basename);
+    }
+
     gtk_header_bar_set_subtitle (GTK_HEADER_BAR (self->header), face->style_name);
 
     install_button_refresh_appearance (self, NULL);