X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=synfig-studio%2Ftrunk%2Fsrc%2Fgtkmm%2Fdock_navigator.cpp;h=7141fa99ea0ebffdd207f63beba012b903cd389a;hb=63e709f66d50c124cc0ece2325f4773ac4ae7b20;hp=b96f0e88c905dc86fa299b884cc17e1aed021863;hpb=37600b4b217caa5e316984ec0b035c5e8f9698af;p=synfig.git

diff --git a/synfig-studio/trunk/src/gtkmm/dock_navigator.cpp b/synfig-studio/trunk/src/gtkmm/dock_navigator.cpp
index b96f0e8..7141fa9 100644
--- 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 =========================================================== */
@@ -167,8 +169,8 @@ void studio::Widget_NavView::on_start_render()
 
 		renderer = new AsyncRenderer(targ);
 		renderer->signal_success().connect(sigc::mem_fun(*this,&Widget_NavView::on_finish_render));
-		renderer->start();
 		dirty = false;
+		renderer->start();
 	}
 }
 
@@ -180,7 +182,6 @@ void studio::Widget_NavView::on_finish_render()
 	//synfig::warning("Nav: It hath succeeded!!!");
 
 	//assert(renderer && renderer->has_success());
-	DEBUGPOINT();
 	//synfig::warning("Nav: now we know it really succeeded");
 	if(!*surface)
 	{
@@ -220,7 +221,7 @@ void studio::Widget_NavView::on_finish_render()
 			dw,	// width
 			dh,	// height
 			dw*synfig::channels(pf), // stride (pitch)
-			SigC::slot(freegu8)
+			sigc::ptr_fun(freegu8)
 		);
 	}
 	else
@@ -258,6 +259,11 @@ 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())));