prevent redraw on devices that are already redrawing

Author: neu-rah

src/menuIo.cpp

@@ -79,10 +79,8 @@ result outputsList::idle(idleFunc f,idleEvent e,bool idleChanged) {
         } else return quit;
         break;
       case idling:
-        if (idleChanged||o.style&menuOut::redraw) {
-          result r=(*f)(o,e);
-          if (r==quit) return r;
-        }
+        if (o.style&menuOut::redraw||(idleChanged&&(o.style&menuOut::minimalRedraw)))
+          return (*f)(o,e);
         break;
       case idleEnd:
         result r=(*f)(o,e);

src/nav.h

@@ -150,8 +150,9 @@
         inline void doOutput() {
           if (!sleepTask) printMenu();
           else {
-            out.idle(sleepTask,idling,idleChanged);
+            bool c=idleChanged;
             idleChanged=false;//turn it off here so that sleepTask can force it on again
+            out.idle(sleepTask,idling,c);
             #ifdef MENU_IDLE_BKGND
               if (idleTask!=sleepTask) out.idle(idleTask,idling);
             #endif