ext_size attribute added

lv_obj/lv_obj.c

@@ -98,7 +98,12 @@ void lv_obj_inv(lv_obj_t * obj)
         lv_obj_t * par = lv_obj_get_parent(obj);
         bool union_ok = true;
         /*Start with the original coordinates*/
+        cord_t ext_size = obj->ext_size;
         area_cpy(&area_trunc, &obj->cords);
+        area_trunc.x1 -= ext_size;
+        area_trunc.y1 -= ext_size;
+        area_trunc.x2 += ext_size;
+        area_trunc.y2 += ext_size;
         
         /*Check through all parents*/
         while(par != NULL) {
@@ -163,6 +168,7 @@ lv_obj_t * lv_obj_create(lv_obj_t * parent, lv_obj_t * copy)
 		new_obj->cords.y1 = 0;
 		new_obj->cords.x2 = LV_HOR_RES - 1;
 		new_obj->cords.y2 = LV_VER_RES - 1;
+		new_obj->ext_size = 0;
 
 		/*Set appearance*/
 		new_obj->style_p = lv_objs_get(LV_OBJS_SCR, NULL);
@@ -182,7 +188,7 @@ lv_obj_t * lv_obj_create(lv_obj_t * parent, lv_obj_t * copy)
 		new_obj->top_en = 0;
 		new_obj->ext = NULL;
 	 }
-    /*parent != NULL create normal obj. on parent*/
+    /*parent != NULL create normal obj. on a parent*/
     else
     {   
         new_obj = ll_ins_head(&(parent)->child_ll);
@@ -197,6 +203,7 @@ lv_obj_t * lv_obj_create(lv_obj_t * parent, lv_obj_t * copy)
                                    LV_OBJ_DEF_WIDTH;
         new_obj->cords.y2 = parent->cords.y1 +
                                    LV_OBJ_DEF_HEIGHT;
+        new_obj->ext_size = 0;
 
         /*Set appearance*/
         new_obj->style_p = lv_objs_get(LV_OBJS_DEF, NULL);
@@ -221,7 +228,7 @@ lv_obj_t * lv_obj_create(lv_obj_t * parent, lv_obj_t * copy)
 
     if(copy != NULL) {
     	area_cpy(&new_obj->cords, &copy->cords);
-
+    	new_obj->ext_size = copy->ext_size;
         /*Set attributes*/
         new_obj->click_en = copy->click_en;
         new_obj->drag_en = copy->drag_en;
@@ -752,6 +759,18 @@ void lv_obj_align_us(lv_obj_t * obj,lv_obj_t * base, lv_align_t align, cord_t x_
 	lv_obj_align(obj, base, align, x_mod * LV_DOWNSCALE, y_mod * LV_DOWNSCALE);
 }
 
+/**
+ * Set the extended size of an object
+ * @param obj pointer to an object
+ * @param ext_size the extended size
+ */
+void lv_obj_set_ext_size(lv_obj_t * obj, cord_t ext_size)
+{
+	obj->ext_size = ext_size;
+
+	lv_obj_inv(obj);
+}
+
 /*---------------------
  * Appearance set 
  *--------------------*/
@@ -937,6 +956,18 @@ void * lv_obj_alloc_ext(lv_obj_t * obj, uint16_t ext_size)
 }
 
 /**
+ * Send a 'LV_SIGNAL_REFR_EXT_SIZE' signal to the object
+ * @param obj pointer to an object
+ */
+void lv_obj_ext_size_refr(lv_obj_t * obj)
+{
+	obj->ext_size = 0;
+	obj->signal_f(obj, LV_SIGNAL_REFR_EXT_SIZE, NULL);
+
+	lv_obj_inv(obj);
+}
+
+/**
  * Set an application specific number for an object.
  * It can help to identify objects in the application. 
  * @param obj pointer to an object
@@ -1173,6 +1204,16 @@ cord_t lv_obj_get_height(lv_obj_t * obj)
     return area_get_height(&obj->cords);
 }
 
+/**
+ * Get the extended size attribute of an object
+ * @param obj pointer to an object
+ * @return the extended size attribute
+ */
+cord_t lv_obj_getext_size(lv_obj_t * obj)
+{
+    return obj->ext_size;
+}
+
 /*-----------------
  * Appearance get
  *---------------*/

lv_obj/lv_obj.h

@@ -73,6 +73,7 @@ typedef enum
     LV_SIGNAL_CHILD_CHG,
     LV_SIGNAL_CORD_CHG,
     LV_SIGNAL_STYLE_CHG,
+	LV_SIGNAL_REFR_EXT_SIZE,
 }lv_signal_t;
 
 typedef bool (* lv_signal_f_t) (struct __LV_OBJ_T * obj, lv_signal_t sign, void * param);
@@ -102,11 +103,13 @@ typedef struct __LV_OBJ_T
     uint8_t style_iso 	 :1;	/*1: The object has got an own style*/
     uint8_t hidden       :1;    /*1: Object is hidden*/
     uint8_t top_en       :1;	/*1: If the object or its children  is clicked it goes to the foreground*/
-    uint8_t child_chg_off:1;    /*1: Disable the child change signal. Useful when moving the children*/
+    uint8_t child_chg_off:1;    /*1: Disable the child change signal. Used by the library*/
 
-	opa_t opa;
+    cord_t ext_size;			/*EXTtend the size of the object in every direction. Used to draw shadow, shine etc.*/
 
     uint8_t free_num; 		/*Application specific identifier (set it freely)*/
+	opa_t opa;
+
     
 }lv_obj_t;
 
@@ -194,6 +197,7 @@ void lv_obj_set_height(lv_obj_t * obj, cord_t h);
 void lv_obj_set_height_us(lv_obj_t * obj, cord_t h);
 void lv_obj_align(lv_obj_t * obj,lv_obj_t * base, lv_align_t align, cord_t x_mod, cord_t y_mod);
 void lv_obj_align_us(lv_obj_t * obj,lv_obj_t * base, lv_align_t align, cord_t x_mod, cord_t y_mod);
+void lv_obj_set_ext_size(lv_obj_t * obj, cord_t ext_size);;
 /*Appearance set*/
 void lv_obj_set_hidden(lv_obj_t * obj, bool hidden_en);
 void lv_obj_set_opa(lv_obj_t * obj, opa_t opa);
@@ -208,6 +212,7 @@ void lv_obj_set_signal_f(lv_obj_t * obj, lv_signal_f_t fp);
 void lv_obj_set_design_f(lv_obj_t * obj, lv_design_f_t fp);
 /*Other set*/
 void * lv_obj_alloc_ext(lv_obj_t * obj, uint16_t ext_size);
+void lv_obj_ext_size_refr(lv_obj_t * obj);
 void lv_obj_set_style(lv_obj_t * obj, void * style_p);
 void * lv_obj_iso_style(lv_obj_t * obj, uint32_t style_size);
 void lv_obj_set_free_num(lv_obj_t * obj, uint8_t free_num);

lv_obj/lv_refr.c

@@ -391,24 +391,38 @@ static void lv_refr_obj(lv_obj_t * obj, const area_t * mask_ori_p)
     bool union_ok;  /* Store the return value of area_union */
     /* Truncate the original mask to the coordinates of the parent
      * because the parent and its children are visible only here */
-    area_t mask_parent;
-    union_ok = area_union(&mask_parent, mask_ori_p, &obj->cords);
+    area_t obj_mask;
+    area_t obj_area;
+    cord_t ext_size = obj->ext_size;
+    lv_obj_get_cords(obj, &obj_area);
+    obj_area.x1 -= ext_size;
+    obj_area.y1 -= ext_size;
+    obj_area.x2 += ext_size;
+    obj_area.y2 += ext_size;
+    union_ok = area_union(&obj_mask, mask_ori_p, &obj_area);
     
     /*Draw the parent and its children only if they ore on 'mask_parent'*/
     if(union_ok != false) {
 
         /* Redraw the object */    
         if(obj->opa != OPA_TRANSP && LV_SA(obj, lv_objs_t)->transp == 0) {
-            obj->design_f(obj, &mask_parent, LV_DESIGN_DRAW_MAIN);
+            obj->design_f(obj, &obj_mask, LV_DESIGN_DRAW_MAIN);
         }
 
         area_t mask_child; /*Mask from obj and its child*/
         lv_obj_t * child_p;    
+    	area_t child_area;
         LL_READ_BACK(obj->child_ll, child_p)
         {   
+			lv_obj_get_cords(child_p, &child_area);
+			ext_size = child_p->ext_size;
+			child_area.x1 -= ext_size;
+			child_area.y1 -= ext_size;
+			child_area.x2 += ext_size;
+			child_area.y2 += ext_size;
             /* Get the union (common parts) of original mask (from obj)
              * and its child */
-            union_ok = area_union(&mask_child, &mask_parent, &child_p->cords);
+            union_ok = area_union(&mask_child, &obj_mask, &child_area);
 
             /*If the parent and the child has common area then refresh the child */        
             if(union_ok) {
@@ -419,7 +433,7 @@ static void lv_refr_obj(lv_obj_t * obj, const area_t * mask_ori_p)
 
         /* If all the children are redrawn call make 'post draw' design */
 		if(obj->opa != OPA_TRANSP && LV_SA(obj, lv_objs_t)->transp == 0) {
-		  obj->design_f(obj, &mask_parent, LV_DESIGN_DRAW_POST);
+		  obj->design_f(obj, &obj_mask, LV_DESIGN_DRAW_POST);
 		}
     }
 }