Typo.

[synfig.git] / synfig-studio / trunk / src / gtkmm / dock_navigator.cpp

diff --git a/synfig-studio/trunk/src/gtkmm/dock_navigator.cpp b/synfig-studio/trunk/src/gtkmm/dock_navigator.cpp
index d0717bb..d332518 100644 (file)
--- a/synfig-studio/trunk/src/gtkmm/dock_navigator.cpp
+++ b/synfig-studio/trunk/src/gtkmm/dock_navigator.cpp
@@ -44,6 +44,8 @@
 
 #include "asyncrenderer.h"
 
+#include "general.h"
+
 #endif
 
 /* === U S I N G =========================================================== */
@@ -258,6 +260,11 @@ static double zoom_to_unit(double f)
 
 bool studio::Widget_NavView::on_expose_draw(GdkEventExpose */*exp*/)
 {
+       // don't redraw if the previous redraw is still running single-threaded
+       // or we end up destroying the renderer that's rendering it
+       if (App::single_threaded && renderer && renderer->updating)
+               return false;
+
        //print out the zoom
        //HACK kind of...
        //zoom_print.set_text(strprintf("%.1f%%",100*unit_to_zoom(adj_zoom.get_value())));