Fixed #148 (Wrong font is used)

Changelog

@@ -1,4 +1,4 @@
-0.25.4          (2018-07-11):
+0.25.4          (2018-07-28):
 * Bugfix: https://github.com/klayoutmatthias/klayout/issues/121
        Issue with multiple reads of GDS2 layouts including PCells
 * Bugfix: https://github.com/klayoutmatthias/klayout/issues/134
@@ -11,6 +11,8 @@
        Issue with RBA::QHostAddress (ambiguous overload) on Qt5
 * Bugfix: https://github.com/klayoutmatthias/klayout/issues/142
        Issue with RBA::RecursiveShapeIterator#region=
+* Bugfix: https://github.com/klayoutmatthias/klayout/issues/148
+       Wrong font is used
 * Bugfix: 8 bit indexed GIF images can be used for package icons now
 * Enhancement: Provide a way to specify the type of a macro
        This feature is mainly useful for command line arguments.

src/lay/lay/layFontController.cc

@@ -112,13 +112,11 @@ FontController::can_exit (lay::PluginRoot * /*root*/) const
 void
 FontController::sync_dirs ()
 {
-  if (! m_file_watcher) {
-    return;
+  if (m_file_watcher) {
+    m_file_watcher->clear ();
+    m_file_watcher->enable (false);
   }
 
-  m_file_watcher->clear ();
-  m_file_watcher->enable (false);
-
   std::vector<std::string> paths = lay::ApplicationBase::instance ()->klayout_path ();
 
   //  add the salt grains as potential sources for library definitions
@@ -137,14 +135,18 @@ FontController::sync_dirs ()
   for (std::vector <std::string>::const_iterator p = paths.begin (); p != paths.end (); ++p) {
     QDir fp = QDir (tl::to_qstring (*p)).filePath (tl::to_qstring ("fonts"));
     if (fp.exists ()) {
-      m_file_watcher->add_file (tl::to_string (fp.absolutePath ()));
+      if (m_file_watcher) {
+        m_file_watcher->add_file (tl::to_string (fp.absolutePath ()));
+      }
       font_paths.push_back (tl::to_string (fp.absolutePath ()));
     }
   }
 
   db::TextGenerator::set_font_paths (font_paths);
 
-  m_file_watcher->enable (true);
+  if (m_file_watcher) {
+    m_file_watcher->enable (true);
+  }
 }
 
 void