From 424bff48f5c7b9ebc41c3d910382c6c890fb63a2 Mon Sep 17 00:00:00 2001
From: Gabor Kiss-Vamosi <kisvegabor@gmail.com>
Date: Thu, 9 May 2019 06:04:45 +0200
Subject: [PATCH] lv_obj_move_fore/background: move only if not there now

---
 src/lv_core/lv_obj.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/lv_core/lv_obj.c b/src/lv_core/lv_obj.c
index af7b50aa2..5bd6353a6 100644
--- a/src/lv_core/lv_obj.c
+++ b/src/lv_core/lv_obj.c
@@ -572,6 +572,9 @@ void lv_obj_move_foreground(lv_obj_t * obj)
 {
     lv_obj_t * parent = lv_obj_get_parent(obj);
 
+    /*Do nothing of already in the foreground*/
+    if(lv_ll_get_head(&parent->child_ll) == obj) return;
+
     lv_obj_invalidate(parent);
 
     lv_ll_chg_list(&parent->child_ll, &parent->child_ll, obj, true);
@@ -590,6 +593,9 @@ void lv_obj_move_background(lv_obj_t * obj)
 {
     lv_obj_t * parent = lv_obj_get_parent(obj);
 
+    /*Do nothing of already in the background*/
+    if(lv_ll_get_tail(&parent->child_ll) == obj) return;
+
     lv_obj_invalidate(parent);
 
     lv_ll_chg_list(&parent->child_ll, &parent->child_ll, obj, false);