refactor(obj class) add user_data parameter to lv_obj_class_create_obj()

src/core/lv_obj.c

@@ -174,7 +174,7 @@ void lv_deinit(void)
 
 lv_obj_t * lv_obj_create(lv_obj_t * parent)
 {
-    return lv_obj_class_create_obj(&lv_obj_class, parent);
+    return lv_obj_class_create_obj(&lv_obj_class, parent, NULL);
 }
 
 /*=====================

src/core/lv_obj_class.c

@@ -40,7 +40,7 @@ static uint32_t get_instance_size(const lv_obj_class_t * class_p);
  *   GLOBAL FUNCTIONS
  **********************/
 
-lv_obj_t * lv_obj_class_create_obj(const lv_obj_class_t * class_p, lv_obj_t * parent)
+lv_obj_t * lv_obj_class_create_obj(const lv_obj_class_t * class_p, lv_obj_t * parent, void * user_data)
 {
     LV_TRACE_OBJ_CREATE("Creating object with %p class on %p parent", class_p, parent);
     uint32_t s = get_instance_size(class_p);
@@ -49,6 +49,9 @@ lv_obj_t * lv_obj_class_create_obj(const lv_obj_class_t * class_p, lv_obj_t * pa
     lv_memset_00(obj, s);
     obj->class_p = class_p;
     obj->parent = parent;
+#if LV_USE_USER_DATA
+    obj->user_data = user_data;
+#endif
 
     /*Create a screen*/
     if(parent == NULL) {

src/core/lv_obj_class.h

@@ -70,9 +70,11 @@ typedef struct _lv_obj_class_t {
  * Create an object form a class descriptor
  * @param class_p   pointer to a class
  * @param parent    pointer to an object where the new object should be created
+ * @param user_data a custom user_data to set in `obj->user_data` in creation time. Requires `LV_USE_USER_DATA 1`
+ *                  As some event fire during creation it's useful make user_data available for those events too.
  * @return          pointer to the created object
  */
-struct _lv_obj_t * lv_obj_class_create_obj(const struct _lv_obj_class_t * class_p, struct _lv_obj_t * parent);
+struct _lv_obj_t * lv_obj_class_create_obj(const struct _lv_obj_class_t * class_p, struct _lv_obj_t * parent, void * user_data);
 
 void _lv_obj_destructor(struct _lv_obj_t * obj);
 

src/extra/widgets/calendar/lv_calendar.c

@@ -56,7 +56,7 @@ static const char * day_names_def[7] = LV_CALENDAR_DEFAULT_DAY_NAMES;
 
 lv_obj_t * lv_calendar_create(lv_obj_t * parent)
 {
-    lv_obj_t * obj = lv_obj_class_create_obj(&lv_calendar_class, parent);
+    lv_obj_t * obj = lv_obj_class_create_obj(&lv_calendar_class, parent, NULL);
 
     return obj;
 }

src/extra/widgets/chart/lv_chart.c

@@ -65,7 +65,7 @@ const lv_obj_class_t lv_chart_class = {
 lv_obj_t * lv_chart_create(lv_obj_t * parent)
 {
     LV_LOG_INFO("begin")
-    return lv_obj_class_create_obj(&lv_chart_class, parent);
+    return lv_obj_class_create_obj(&lv_chart_class, parent, NULL);
 }
 
 void lv_chart_set_type(lv_obj_t * obj, lv_chart_type_t type)

src/extra/widgets/colorwheel/lv_colorwheel.c

@@ -75,7 +75,7 @@ static bool create_knob_recolor;
 lv_obj_t * lv_colorwheel_create(lv_obj_t * parent, bool knob_recolor)
 {
     create_knob_recolor = knob_recolor;
-    return lv_obj_class_create_obj(&lv_colorwheel_class, parent);
+    return lv_obj_class_create_obj(&lv_colorwheel_class, parent, NULL);
 }
 
 /*=====================

src/extra/widgets/imgbtn/lv_imgbtn.c

@@ -55,7 +55,7 @@ const lv_obj_class_t lv_imgbtn_class = {
  */
 lv_obj_t * lv_imgbtn_create(lv_obj_t * parent)
 {
-   return lv_obj_class_create_obj(&lv_imgbtn_class, parent);
+   return lv_obj_class_create_obj(&lv_imgbtn_class, parent, NULL);
 }
 
 /*=====================

src/extra/widgets/keyboard/lv_keyboard.c

@@ -121,7 +121,7 @@ static const lv_btnmatrix_ctrl_t * kb_ctrl[5] = {
  */
 lv_obj_t * lv_keyboard_create(lv_obj_t * parent)
 {
-    return lv_obj_class_create_obj(&lv_keyboard_class, parent);
+    return lv_obj_class_create_obj(&lv_keyboard_class, parent, NULL);
 }
 
 /*=====================

src/extra/widgets/led/lv_led.c

@@ -59,7 +59,7 @@ const lv_obj_class_t lv_led_class  = {
  */
 lv_obj_t * lv_led_create(lv_obj_t * parent)
 {
-    return lv_obj_class_create_obj(&lv_led_class, parent);
+    return lv_obj_class_create_obj(&lv_led_class, parent, NULL);
 }
 
 /*=====================

src/extra/widgets/list/lv_list.c

@@ -55,7 +55,7 @@ const lv_obj_class_t lv_list_text_class = {
 
 lv_obj_t * lv_list_create(lv_obj_t * parent)
 {
-    lv_obj_t * list = lv_obj_class_create_obj(&lv_list_class, parent);
+    lv_obj_t * list = lv_obj_class_create_obj(&lv_list_class, parent, NULL);
     lv_obj_set_flex_flow(list, LV_FLEX_FLOW_COLUMN);
 
     return list;
@@ -63,7 +63,7 @@ lv_obj_t * lv_list_create(lv_obj_t * parent)
 
 lv_obj_t * lv_list_add_text(lv_obj_t * list, const char * txt)
 {
-    lv_obj_t * label = lv_obj_class_create_obj(&lv_list_text_class, list);
+    lv_obj_t * label = lv_obj_class_create_obj(&lv_list_text_class, list, NULL);
     lv_label_set_text(label, txt);
     lv_label_set_long_mode(label, LV_LABEL_LONG_SCROLL_CIRCULAR);
     lv_obj_set_width(label, LV_PCT(100));
@@ -72,7 +72,7 @@ lv_obj_t * lv_list_add_text(lv_obj_t * list, const char * txt)
 
 lv_obj_t * lv_list_add_btn(lv_obj_t * list, const char * icon, const char * txt, lv_event_cb_t event_cb)
 {
-    lv_obj_t * btn = lv_obj_class_create_obj(&lv_list_btn_class, list);
+    lv_obj_t * btn = lv_obj_class_create_obj(&lv_list_btn_class, list, NULL);
     lv_obj_set_size(btn, LV_PCT(100), LV_SIZE_CONTENT);
     if(event_cb) {
     	lv_obj_add_event_cb(btn, event_cb, LV_EVENT_ALL, NULL);

src/extra/widgets/meter/lv_meter.c

@@ -52,7 +52,7 @@ const lv_obj_class_t lv_meter_class = {
 lv_obj_t * lv_meter_create(lv_obj_t * parent)
 {
     LV_LOG_INFO("begin")
-    return lv_obj_class_create_obj(&lv_meter_class, parent);
+    return lv_obj_class_create_obj(&lv_meter_class, parent, NULL);
 }
 
 /*=====================

src/extra/widgets/msgbox/lv_msgbox.c

@@ -49,7 +49,7 @@ lv_obj_t * lv_msgbox_create(lv_obj_t * parent, const char * title, const char *
         lv_obj_set_size(parent, LV_PCT(100), LV_PCT(100));
     }
 
-    lv_obj_t * mbox = lv_obj_class_create_obj(&lv_msgbox_class, parent);
+    lv_obj_t * mbox = lv_obj_class_create_obj(&lv_msgbox_class, parent, NULL);
     LV_ASSERT_MALLOC(mbox);
     if(mbox == NULL) return NULL;
 

src/extra/widgets/spinbox/lv_spinbox.c

@@ -46,7 +46,7 @@ const lv_obj_class_t lv_spinbox_class = {
 
 lv_obj_t * lv_spinbox_create(lv_obj_t * parent)
 {
-   return lv_obj_class_create_obj(&lv_spinbox_class, parent);
+   return lv_obj_class_create_obj(&lv_spinbox_class, parent, NULL);
 }
 
 /*=====================

src/extra/widgets/tabview/lv_tabview.c

@@ -51,7 +51,7 @@ lv_obj_t * lv_tabview_create(lv_obj_t * parent, lv_dir_t tab_pos, lv_coord_t tab
 {
     tabpos_create = tab_pos;
     tabsize_create = tab_size;
-    return lv_obj_class_create_obj(&lv_tabview_class, parent);
+    return lv_obj_class_create_obj(&lv_tabview_class, parent, NULL);
 }
 
 lv_obj_t * lv_tabview_add_tab(lv_obj_t * obj, const char * name)

src/extra/widgets/tileview/lv_tileview.c

@@ -50,7 +50,7 @@ static uint32_t create_row_id;
 
 lv_obj_t * lv_tileview_create(lv_obj_t * parent)
 {
-   return lv_obj_class_create_obj(&lv_tileview_class, parent);
+   return lv_obj_class_create_obj(&lv_tileview_class, parent, NULL);
 }
 
 /*======================
@@ -62,7 +62,7 @@ lv_obj_t * lv_tileview_add_tile(lv_obj_t * tv, uint8_t col_id, uint8_t row_id, l
     create_dir = dir;
     create_col_id = col_id;
     create_row_id = row_id;
-    return lv_obj_class_create_obj(&lv_tileview_tile_class, tv);
+    return lv_obj_class_create_obj(&lv_tileview_tile_class, tv, NULL);
 }
 
 void lv_obj_set_tile(lv_obj_t * tv, lv_obj_t * tile_obj, lv_anim_enable_t anim_en)

src/extra/widgets/win/lv_win.c

@@ -45,7 +45,7 @@ static lv_coord_t create_header_height;
 lv_obj_t * lv_win_create(lv_obj_t * parent, lv_coord_t header_height)
 {
     create_header_height = header_height;
-    return lv_obj_class_create_obj(&lv_win_class, parent);
+    return lv_obj_class_create_obj(&lv_win_class, parent, NULL);
 }
 
 lv_obj_t * lv_win_add_title(lv_obj_t * win, const char * txt)

src/widgets/lv_arc.c

@@ -65,7 +65,7 @@ const lv_obj_class_t lv_arc_class  = {
 lv_obj_t * lv_arc_create(lv_obj_t * parent)
 {
     LV_LOG_INFO("begin")
-    return lv_obj_class_create_obj(&lv_arc_class, parent);
+    return lv_obj_class_create_obj(&lv_arc_class, parent, NULL);
 }
 
 /*======================

src/widgets/lv_bar.c

@@ -78,7 +78,7 @@ const lv_obj_class_t lv_bar_class = {
 lv_obj_t * lv_bar_create(lv_obj_t * parent)
 {
     LV_LOG_INFO("begin")
-    return lv_obj_class_create_obj(&lv_bar_class, parent);
+    return lv_obj_class_create_obj(&lv_bar_class, parent, NULL);
 }
 
 /*=====================

src/widgets/lv_btn.c

@@ -48,7 +48,7 @@ const lv_obj_class_t lv_btn_class  = {
 lv_obj_t * lv_btn_create(lv_obj_t * parent)
 {
     LV_LOG_INFO("begin")
-     return lv_obj_class_create_obj(&lv_btn_class, parent);
+     return lv_obj_class_create_obj(&lv_btn_class, parent, NULL);
 }
 
 /**********************

src/widgets/lv_btnmatrix.c

@@ -79,7 +79,7 @@ const lv_obj_class_t lv_btnmatrix_class = {
 lv_obj_t * lv_btnmatrix_create(lv_obj_t * parent)
 {
     LV_LOG_INFO("begin")
-    return lv_obj_class_create_obj(&lv_btnmatrix_class, parent);
+    return lv_obj_class_create_obj(&lv_btnmatrix_class, parent, NULL);
 }
 
 /*=====================

src/widgets/lv_canvas.c

@@ -67,7 +67,7 @@ const lv_obj_class_t lv_canvas_class = {
 lv_obj_t * lv_canvas_create(lv_obj_t * parent)
 {
     LV_LOG_INFO("begin")
-    return lv_obj_class_create_obj(&lv_canvas_class, parent);
+    return lv_obj_class_create_obj(&lv_canvas_class, parent, NULL);
 }
 
 /*=====================

src/widgets/lv_checkbox.c

@@ -56,7 +56,7 @@ const lv_obj_class_t lv_checkbox_class = {
 lv_obj_t * lv_checkbox_create(lv_obj_t * parent)
 {
     LV_LOG_INFO("begin")
-    return lv_obj_class_create_obj(&lv_checkbox_class, parent);
+    return lv_obj_class_create_obj(&lv_checkbox_class, parent, NULL);
 }
 
 /*=====================

src/widgets/lv_dropdown.c

@@ -90,7 +90,7 @@ const lv_obj_class_t lv_dropdownlist_class = {
 lv_obj_t * lv_dropdown_create(lv_obj_t * parent)
 {
     LV_LOG_INFO("begin")
-    return lv_obj_class_create_obj(&lv_dropdown_class, parent);
+    return lv_obj_class_create_obj(&lv_dropdown_class, parent, NULL);
 }
 
 /*=====================
@@ -535,7 +535,7 @@ void lv_dropdown_close(lv_obj_t * obj)
 
 static lv_obj_t * lv_dropdown_list_create(lv_obj_t * parent)
 {
-    return lv_obj_class_create_obj(&lv_dropdownlist_class, parent);
+    return lv_obj_class_create_obj(&lv_dropdownlist_class, parent, NULL);
 }
 
 static void lv_dropdown_constructor(const lv_obj_class_t * class_p, lv_obj_t * obj)

src/widgets/lv_img.c

@@ -57,7 +57,7 @@ const lv_obj_class_t lv_img_class = {
 lv_obj_t * lv_img_create(lv_obj_t * parent)
 {
     LV_LOG_INFO("begin")
-    return lv_obj_class_create_obj(&lv_img_class, parent);
+    return lv_obj_class_create_obj(&lv_img_class, parent, NULL);
 }
 
 /*=====================

src/widgets/lv_label.c

@@ -74,7 +74,7 @@ const lv_obj_class_t lv_label_class = {
 lv_obj_t * lv_label_create(lv_obj_t * parent)
 {
     LV_LOG_INFO("begin")
-    return lv_obj_class_create_obj(&lv_label_class, parent);
+    return lv_obj_class_create_obj(&lv_label_class, parent, NULL);
 }
 
 /*=====================

src/widgets/lv_line.c

@@ -54,7 +54,7 @@ const lv_obj_class_t lv_line_class = {
 lv_obj_t * lv_line_create(lv_obj_t * parent)
 {
     LV_LOG_INFO("begin")
-    return lv_obj_class_create_obj(&lv_line_class, parent);
+    return lv_obj_class_create_obj(&lv_line_class, parent, NULL);
 }
 
 /*=====================

src/widgets/lv_roller.c

@@ -77,7 +77,7 @@ const lv_obj_class_t lv_roller_label_class  = {
 lv_obj_t * lv_roller_create(lv_obj_t * parent)
 {
     LV_LOG_INFO("begin")
-    return lv_obj_class_create_obj(&lv_roller_class, parent);
+    return lv_obj_class_create_obj(&lv_roller_class, parent, NULL);
 }
 
 /*=====================
@@ -297,7 +297,7 @@ static void lv_roller_constructor(const lv_obj_class_t * class_p, lv_obj_t * obj
     lv_obj_clear_flag(obj, LV_OBJ_FLAG_SCROLLABLE);
     lv_obj_clear_flag(obj, LV_OBJ_FLAG_SCROLL_CHAIN);
 
-    lv_obj_class_create_obj(&lv_roller_label_class, obj);
+    lv_obj_class_create_obj(&lv_roller_label_class, obj, NULL);
     lv_roller_set_options(obj, "Option 1\nOption 2\nOption 3\nOption 4\nOption 5", LV_ROLLER_MODE_NORMAL);
 
     LV_LOG_TRACE("finshed");

src/widgets/lv_slider.c

@@ -59,7 +59,7 @@ const lv_obj_class_t lv_slider_class = {
 lv_obj_t * lv_slider_create(lv_obj_t * parent)
 {
     LV_LOG_INFO("begin")
-    return lv_obj_class_create_obj(&lv_slider_class, parent);
+    return lv_obj_class_create_obj(&lv_slider_class, parent, NULL);
 }
 
 bool lv_slider_is_dragged(const lv_obj_t * obj)

src/widgets/lv_switch.c

@@ -61,7 +61,7 @@ const lv_obj_class_t lv_switch_class = {
 lv_obj_t * lv_switch_create(lv_obj_t * parent)
 {
     LV_LOG_INFO("begin")
-    return lv_obj_class_create_obj(&lv_switch_class, parent);
+    return lv_obj_class_create_obj(&lv_switch_class, parent, NULL);
 }
 
 /**********************

src/widgets/lv_table.c

@@ -64,7 +64,7 @@ const lv_obj_class_t lv_table_class  = {
 lv_obj_t * lv_table_create(lv_obj_t * parent)
 {
     LV_LOG_INFO("begin")
-    return lv_obj_class_create_obj(&lv_table_class, parent);
+    return lv_obj_class_create_obj(&lv_table_class, parent, NULL);
 }
 
 /*=====================

src/widgets/lv_textarea.c

@@ -84,7 +84,7 @@ static const char * ta_insert_replace;
 lv_obj_t * lv_textarea_create(lv_obj_t * parent)
 {
     LV_LOG_INFO("begin")
-  return lv_obj_class_create_obj(&lv_textarea_class, parent);
+  return lv_obj_class_create_obj(&lv_textarea_class, parent, NULL);
 }
 
 /*======================