X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=synfig-studio%2Ftrunk%2Fsrc%2Fgtkmm%2Fworkarea.cpp;h=fa017e609a125e745d2c2905dbaba423c0f40dcd;hb=9f675b68765a7dac8f29a428152f137d0da46f2b;hp=e7c800d8f858e0c5c7015a752440d0a1211c226c;hpb=37600b4b217caa5e316984ec0b035c5e8f9698af;p=synfig.git

diff --git a/synfig-studio/trunk/src/gtkmm/workarea.cpp b/synfig-studio/trunk/src/gtkmm/workarea.cpp
index e7c800d..fa017e6 100644
--- a/synfig-studio/trunk/src/gtkmm/workarea.cpp
+++ b/synfig-studio/trunk/src/gtkmm/workarea.cpp
@@ -810,6 +810,19 @@ WorkArea::~WorkArea()
 		render_idle_func_id=0;
 }
 
+bool
+WorkArea::get_updating()const
+{
+	return App::single_threaded && async_renderer && async_renderer->updating;
+}
+
+void
+WorkArea::stop_updating(bool cancel)
+{
+	async_renderer->stop();
+	if (cancel) canceled_=true;
+}
+
 void
 WorkArea::save_meta_data()
 {
@@ -2174,6 +2187,12 @@ public:
 bool
 studio::WorkArea::async_update_preview()
 {
+	if (get_updating())
+	{
+		stop_updating();
+		return false;
+	}
+
 	async_renderer=0;
 
 	queued=false;