evas: don't emit EVAS_CALLBACK_MOVE event if nobody is listening.

This give a constant improvement of 2% over a total benchmark run while scrolling
genlist. This benchmark included setup and destruction of the scene, so under
estimate the cost of the callback emit.

src/lib/evas/canvas/evas_callbacks.c

@@ -201,6 +201,11 @@ evas_object_event_callback_call(Evas_Object *eo_obj, Evas_Object_Protected_Data
    if (!(e = obj->layer->evas)) return;
 
    _evas_walk(e);
+
+   if (type == EVAS_CALLBACK_MOVE &&
+       obj->move_ref == 0)
+     goto nothing_here;
+
      {
         switch (type)
           {
@@ -248,6 +253,7 @@ evas_object_event_callback_call(Evas_Object *eo_obj, Evas_Object_Protected_Data
           }
      }
 
+ nothing_here:
    if (!obj->no_propagate)
      {
         if ((obj->smart.parent) && (type != EVAS_CALLBACK_FREE) &&

src/lib/evas/canvas/evas_object_main.c

@@ -117,10 +117,10 @@ _check_event_catcher_add(void *data,
                    eo_event_callback_add(EFL_CORE_ANIMATOR_EVENT_ANIMATOR_TICK, _animator_repeater, obj));
              INF("Registering an animator tick on canvas %p for object %p.",
                  obj->layer->evas->evas, obj->object);
-
+          }
-             // No need to walk more than once per array as you can not del
+        else if (array[i].desc == EVAS_OBJECT_EVENT_MOVE)
-             // a partial array
+          {
-             break;
+             obj->move_ref++;
           }
      }
 
@@ -147,8 +147,10 @@ _check_event_catcher_del(void *data,
                    eo_event_callback_del(EFL_CORE_ANIMATOR_EVENT_ANIMATOR_TICK, _animator_repeater, obj));
              INF("Unregistering an animator tick on canvas %p for object %p.",
                  obj->layer->evas->evas, obj->object);
-
+          }
-             break;
+        else if (array[i].desc == EVAS_OBJECT_EVENT_MOVE)
+          {
+             obj->move_ref--;
           }
      }
 

src/lib/evas/include/evas_private.h

@@ -1073,6 +1073,7 @@ struct _Evas_Object_Protected_Data
    unsigned int                ref;
 
    unsigned int                animator_ref;
+   unsigned int                move_ref;
 
    unsigned char               delete_me;