diff --git a/src/lv_core/lv_obj.c b/src/lv_core/lv_obj.c
index b653b2024..850cfeb97 100644
--- a/src/lv_core/lv_obj.c
+++ b/src/lv_core/lv_obj.c
@@ -247,9 +247,6 @@ lv_obj_t * lv_obj_create(lv_obj_t * parent, const lv_obj_t * copy)
         new_obj->h_set = lv_area_get_height(&new_obj->coords);
     }
 
-
-    new_obj->ext_draw_pad = 0;
-
     /*Set attributes*/
     new_obj->flags = LV_OBJ_FLAG_CLICKABLE;
     new_obj->flags |= LV_OBJ_FLAG_SNAPABLE;
@@ -275,7 +272,6 @@ lv_obj_t * lv_obj_create(lv_obj_t * parent, const lv_obj_t * copy)
     /*Copy the attributes if required*/
     if(copy != NULL) {
         lv_area_copy(&new_obj->coords, &copy->coords);
-        new_obj->ext_draw_pad = copy->ext_draw_pad;
 
         new_obj->flags  = copy->flags;
         if(copy->spec_attr) {
@@ -411,7 +407,7 @@ void lv_obj_invalidate(const lv_obj_t * obj)
 
     /*Truncate the area to the object*/
     lv_area_t obj_coords;
-    lv_coord_t ext_size = obj->ext_draw_pad;
+    lv_coord_t ext_size = _lv_obj_get_ext_draw_pad(obj);
     lv_area_copy(&obj_coords, &obj->coords);
     obj_coords.x1 -= ext_size;
     obj_coords.y1 -= ext_size;
@@ -442,7 +438,7 @@ bool lv_obj_area_is_visible(const lv_obj_t * obj, lv_area_t * area)
 
         /*Truncate the area to the object*/
         lv_area_t obj_coords;
-        lv_coord_t ext_size = obj->ext_draw_pad;
+        lv_coord_t ext_size = _lv_obj_get_ext_draw_pad(obj);
         lv_area_copy(&obj_coords, &obj->coords);
         obj_coords.x1 -= ext_size;
         obj_coords.y1 -= ext_size;
@@ -478,7 +474,7 @@ bool lv_obj_is_visible(const lv_obj_t * obj)
     LV_ASSERT_OBJ(obj, LV_OBJX_NAME);
 
     lv_area_t obj_coords;
-    lv_coord_t ext_size = obj->ext_draw_pad;
+    lv_coord_t ext_size = _lv_obj_get_ext_draw_pad(obj);
     lv_area_copy(&obj_coords, &obj->coords);
     obj_coords.x1 -= ext_size;
     obj_coords.y1 -= ext_size;
@@ -644,6 +640,16 @@ void lv_obj_set_ext_click_area(lv_obj_t * obj, lv_coord_t left, lv_coord_t right
 #endif
 }
 
+/**
+ * Get the extended draw area of an object.
+ * @param obj pointer to an object
+ * @return the size extended draw area around the real coordinates
+ */
+lv_coord_t _lv_obj_get_ext_draw_pad(const lv_obj_t * obj)
+{
+    if(obj->spec_attr) return obj->spec_attr->ext_draw_pad;
+    else return 0;
+}
 /*---------------------
  * Appearance set
  *--------------------*/
@@ -2003,8 +2009,9 @@ static lv_res_t lv_obj_signal(lv_obj_t * obj, lv_signal_t sign, void * param)
         }
     }
     else if(sign == LV_SIGNAL_REFR_EXT_DRAW_PAD) {
+        lv_coord_t * s = param;
         lv_coord_t d = _lv_obj_get_draw_rect_ext_pad_size(obj, LV_OBJ_PART_MAIN);
-        obj->ext_draw_pad = LV_MATH_MAX(obj->ext_draw_pad, d);
+        *s = LV_MATH_MAX(*s, d);
     }
     else if(sign == LV_SIGNAL_STYLE_CHG) {
         if(_lv_obj_is_grid_item(obj)) lv_grid_item_refr_pos(obj);
diff --git a/src/lv_core/lv_obj.h b/src/lv_core/lv_obj.h
index 5648044a8..ae0e18e54 100644
--- a/src/lv_core/lv_obj.h
+++ b/src/lv_core/lv_obj.h
@@ -211,6 +211,7 @@ typedef struct {
 
     lv_flex_cont_t flex_cont;
     lv_point_t scroll; /**< The current X/Y scroll offset*/
+    lv_coord_t ext_draw_pad; /**< EXTend the size in every direction for drawing. */
 
 #if LV_USE_EXT_CLICK_AREA == LV_EXT_CLICK_AREA_TINY
     uint8_t ext_click_pad; /**< Extra click padding in all direction */
@@ -230,7 +231,6 @@ struct _lv_obj_t {
     lv_obj_spec_attr_t * spec_attr;
     struct _lv_obj_t * parent; /**< Pointer to the parent object*/
 
-    lv_area_t coords; /**< Coordinates of the object (x1, y1, x2, y2)*/
 
     lv_signal_cb_t signal_cb; /**< Object type specific signal function*/
     lv_design_cb_t design_cb; /**< Object type specific design function*/
@@ -240,15 +240,13 @@ struct _lv_obj_t {
 
     /*Attributes and states*/
     lv_obj_flag_t flags;
-
     lv_state_t state;
 
+    lv_area_t coords; /**< Coordinates of the object (x1, y1, x2, y2)*/
     lv_coord_t x_set;
     lv_coord_t y_set;
     lv_coord_t w_set;
     lv_coord_t h_set;
-
-    lv_coord_t ext_draw_pad; /**< EXTend the size in every direction for drawing. */
 };
 
 enum {
@@ -409,6 +407,13 @@ void lv_obj_move_background(lv_obj_t * obj);
  */
 void lv_obj_set_ext_click_area(lv_obj_t * obj, lv_coord_t left, lv_coord_t right, lv_coord_t top, lv_coord_t bottom);
 
+/**
+ * Get the extended draw area of an object.
+ * @param obj pointer to an object
+ * @return the size extended draw area around the real coordinates
+ */
+lv_coord_t _lv_obj_get_ext_draw_pad(const lv_obj_t * obj);
+
 /*---------------------
  * Appearance set
  *--------------------*/
diff --git a/src/lv_core/lv_obj_draw.c b/src/lv_core/lv_obj_draw.c
index 86cbf84b5..643ddb983 100644
--- a/src/lv_core/lv_obj_draw.c
+++ b/src/lv_core/lv_obj_draw.c
@@ -385,9 +385,19 @@ void _lv_obj_refresh_ext_draw_pad(lv_obj_t * obj)
 {
     LV_ASSERT_OBJ(obj, LV_OBJX_NAME);
 
-    obj->ext_draw_pad = 0;
-    obj->signal_cb(obj, LV_SIGNAL_REFR_EXT_DRAW_PAD, NULL);
+    lv_coord_t s = 0;
+    obj->signal_cb(obj, LV_SIGNAL_REFR_EXT_DRAW_PAD, &s);
 
+    /*Store the result if the special attrs already allocated*/
+    if(obj->spec_attr) {
+        obj->spec_attr = s;
+    }
+    /* Allocate spec. attrs. only if the result is not zero.
+     * Zero is the default value if the spec. attr. are not defined. */
+    else if(s != 0) {
+        lv_obj_allocate_rare_attr(obj);
+        obj->spec_attr->ext_draw_pad = s;
+    }
 }
 
 /**
diff --git a/src/lv_core/lv_refr.c b/src/lv_core/lv_refr.c
index ce8119808..cb554fcf9 100644
--- a/src/lv_core/lv_refr.c
+++ b/src/lv_core/lv_refr.c
@@ -664,7 +664,7 @@ static void lv_refr_obj(lv_obj_t * obj, const lv_area_t * mask_ori_p)
     lv_area_t obj_mask;
     lv_area_t obj_ext_mask;
     lv_area_t obj_area;
-    lv_coord_t ext_size = obj->ext_draw_pad;
+    lv_coord_t ext_size = _lv_obj_get_ext_draw_pad(obj);
     lv_obj_get_coords(obj, &obj_area);
     obj_area.x1 -= ext_size;
     obj_area.y1 -= ext_size;
@@ -705,7 +705,7 @@ static void lv_refr_obj(lv_obj_t * obj, const lv_area_t * mask_ori_p)
             lv_ll_t * ll = _lv_obj_get_child_ll(obj);
             _LV_LL_READ_BACK(ll, child_p) {
                 lv_obj_get_coords(child_p, &child_area);
-                ext_size = child_p->ext_draw_pad;
+                ext_size = _lv_obj_get_ext_draw_pad(child_p);
                 child_area.x1 -= ext_size;
                 child_area.y1 -= ext_size;
                 child_area.x2 += ext_size;
diff --git a/src/lv_widgets/lv_bar.c b/src/lv_widgets/lv_bar.c
index 6b3daba42..81615b8bd 100644
--- a/src/lv_widgets/lv_bar.c
+++ b/src/lv_widgets/lv_bar.c
@@ -631,7 +631,8 @@ static lv_res_t lv_bar_signal(lv_obj_t * bar, lv_signal_t sign, void * param)
         indic_size = _lv_obj_get_draw_rect_ext_pad_size(bar, LV_BAR_PART_INDIC);
 
         /*Bg size is handled by lv_obj*/
-        bar->ext_draw_pad = LV_MATH_MAX(bar->ext_draw_pad, indic_size);
+        lv_coord_t * s = param;
+        *s = LV_MATH_MAX(*s, indic_size);
 
     }
     if(sign == LV_SIGNAL_CLEANUP) {
diff --git a/src/lv_widgets/lv_img.c b/src/lv_widgets/lv_img.c
index ee1fbc0f7..94c4967b3 100644
--- a/src/lv_widgets/lv_img.c
+++ b/src/lv_widgets/lv_img.c
@@ -754,6 +754,7 @@ static lv_res_t lv_img_signal(lv_obj_t * img, lv_signal_t sign, void * param)
     }
     else if(sign == LV_SIGNAL_REFR_EXT_DRAW_PAD) {
 
+        lv_coord_t * s = param;
         lv_style_int_t transf_zoom = lv_obj_get_style_transform_zoom(img, LV_IMG_PART_MAIN);
         transf_zoom = (transf_zoom * ext->zoom) >> 8;
 
@@ -766,11 +767,11 @@ static lv_res_t lv_img_signal(lv_obj_t * img, lv_signal_t sign, void * param)
             lv_coord_t w = lv_obj_get_width(img);
             lv_coord_t h = lv_obj_get_height(img);
             _lv_img_buf_get_transformed_area(&a, w, h, transf_angle, transf_zoom, &ext->pivot);
-            lv_coord_t pad_ori = img->ext_draw_pad;
-            img->ext_draw_pad = LV_MATH_MAX(img->ext_draw_pad, pad_ori - a.x1);
-            img->ext_draw_pad = LV_MATH_MAX(img->ext_draw_pad, pad_ori - a.y1);
-            img->ext_draw_pad = LV_MATH_MAX(img->ext_draw_pad, pad_ori + a.x2 - w);
-            img->ext_draw_pad = LV_MATH_MAX(img->ext_draw_pad, pad_ori + a.y2 - h);
+            lv_coord_t pad_ori = *s;
+            *s = LV_MATH_MAX(*s, pad_ori - a.x1);
+            *s = LV_MATH_MAX(*s, pad_ori - a.y1);
+            *s = LV_MATH_MAX(*s, pad_ori + a.x2 - w);
+            *s = LV_MATH_MAX(*s, pad_ori + a.y2 - h);
         }
 
         /*Handle the padding of the background*/
@@ -779,10 +780,10 @@ static lv_res_t lv_img_signal(lv_obj_t * img, lv_signal_t sign, void * param)
         lv_style_int_t top = lv_obj_get_style_pad_top(img, LV_IMG_PART_MAIN);
         lv_style_int_t bottom = lv_obj_get_style_pad_bottom(img, LV_IMG_PART_MAIN);
 
-        img->ext_draw_pad = LV_MATH_MAX(img->ext_draw_pad, left);
-        img->ext_draw_pad = LV_MATH_MAX(img->ext_draw_pad, right);
-        img->ext_draw_pad = LV_MATH_MAX(img->ext_draw_pad, top);
-        img->ext_draw_pad = LV_MATH_MAX(img->ext_draw_pad, bottom);
+        *s = LV_MATH_MAX(*s, left);
+        *s = LV_MATH_MAX(*s, right);
+        *s = LV_MATH_MAX(*s, top);
+        *s = LV_MATH_MAX(*s, bottom);
     }
     else if(sign == LV_SIGNAL_HIT_TEST) {
         lv_hit_test_info_t * info = param;
diff --git a/src/lv_widgets/lv_imgbtn.c b/src/lv_widgets/lv_imgbtn.c
index 3dca1c9e2..e3f453c8e 100644
--- a/src/lv_widgets/lv_imgbtn.c
+++ b/src/lv_widgets/lv_imgbtn.c
@@ -465,10 +465,11 @@ static lv_res_t lv_imgbtn_signal(lv_obj_t * imgbtn, lv_signal_t sign, void * par
         lv_style_int_t top = lv_obj_get_style_pad_top(imgbtn, LV_IMGBTN_PART_MAIN);
         lv_style_int_t bottom = lv_obj_get_style_pad_bottom(imgbtn, LV_IMGBTN_PART_MAIN);
 
-        imgbtn->ext_draw_pad = LV_MATH_MAX(imgbtn->ext_draw_pad, left);
-        imgbtn->ext_draw_pad = LV_MATH_MAX(imgbtn->ext_draw_pad, right);
-        imgbtn->ext_draw_pad = LV_MATH_MAX(imgbtn->ext_draw_pad, top);
-        imgbtn->ext_draw_pad = LV_MATH_MAX(imgbtn->ext_draw_pad, bottom);
+        lv_coord_t * s = param;
+        *s = LV_MATH_MAX(*s, left);
+        *s = LV_MATH_MAX(*s, right);
+        *s = LV_MATH_MAX(*s, top);
+        *s = LV_MATH_MAX(*s, bottom);
     }
     else if(sign == LV_SIGNAL_PRESSED || sign == LV_SIGNAL_RELEASED || sign == LV_SIGNAL_PRESS_LOST) {
         refr_img(imgbtn);
diff --git a/src/lv_widgets/lv_line.c b/src/lv_widgets/lv_line.c
index 642edfc6d..a40eb5b3b 100644
--- a/src/lv_widgets/lv_line.c
+++ b/src/lv_widgets/lv_line.c
@@ -237,7 +237,8 @@ static lv_res_t lv_line_signal(lv_obj_t * line, lv_signal_t sign, void * param)
     else if(sign == LV_SIGNAL_REFR_EXT_DRAW_PAD) {
         /*The corner of the skew lines is out of the intended area*/
         lv_style_int_t line_width = lv_obj_get_style_line_width(line, LV_LINE_PART_MAIN);
-        if(line->ext_draw_pad < line_width) line->ext_draw_pad = line_width;
+        lv_coord_t * s = param;
+        if(*s < line_width) *s = line_width;
     }
     else if(sign == LV_SIGNAL_GET_SELF_SIZE) {
         lv_line_ext_t * ext = lv_obj_get_ext_attr(line);
diff --git a/src/lv_widgets/lv_roller.c b/src/lv_widgets/lv_roller.c
index 31109fd71..d3ac5a908 100644
--- a/src/lv_widgets/lv_roller.c
+++ b/src/lv_widgets/lv_roller.c
@@ -703,10 +703,11 @@ static lv_res_t lv_roller_label_signal(lv_obj_t * label, lv_signal_t sign, void
 
     if(sign == LV_SIGNAL_REFR_EXT_DRAW_PAD) {
         /*If the selected text has a larger font it needs some extra space to draw it*/
+        lv_coord_t * s = param;
         lv_obj_t * roller = lv_obj_get_parent(label);
         lv_coord_t sel_w = get_selected_label_width(roller);
         lv_coord_t label_w = lv_obj_get_width(label);
-        label->ext_draw_pad = LV_MATH_MAX(label->ext_draw_pad, sel_w - label_w);
+        *s = LV_MATH_MAX(*s, sel_w - label_w);
     }
 
     return res;
diff --git a/src/lv_widgets/lv_slider.c b/src/lv_widgets/lv_slider.c
index 5f1d98154..2dfff6bb5 100644
--- a/src/lv_widgets/lv_slider.c
+++ b/src/lv_widgets/lv_slider.c
@@ -404,7 +404,8 @@ static lv_res_t lv_slider_signal(lv_obj_t * slider, lv_signal_t sign, void * par
         knob_size += _lv_obj_get_draw_rect_ext_pad_size(slider, LV_SLIDER_PART_KNOB);
 
         /*Indic. size is handled by bar*/
-        slider->ext_draw_pad = LV_MATH_MAX(slider->ext_draw_pad, knob_size);
+        lv_coord_t * s = param;
+        *s  = LV_MATH_MAX(*s, knob_size);
 
     }
     else if(sign == LV_SIGNAL_CONTROL) {
diff --git a/src/lv_widgets/lv_switch.c b/src/lv_widgets/lv_switch.c
index effcdfd5a..36fcb8772 100644
--- a/src/lv_widgets/lv_switch.c
+++ b/src/lv_widgets/lv_switch.c
@@ -314,7 +314,8 @@ static lv_res_t lv_switch_signal(lv_obj_t * sw, lv_signal_t sign, void * param)
         knob_size += _lv_obj_get_draw_rect_ext_pad_size(sw, LV_SWITCH_PART_KNOB);
 
         /*Indic. size is handled by bar*/
-        sw->ext_draw_pad = LV_MATH_MAX(sw->ext_draw_pad, knob_size);
+        lv_coord_t * s = param;
+        *s = LV_MATH_MAX(*s, knob_size);
     }
     else if(sign == LV_SIGNAL_GET_EDITABLE) {
 #if LV_USE_GROUP