29 static void lv_obj_del_async_cb(void * obj);
30 static void obj_del_core(lv_obj_t * obj);
31 static lv_obj_tree_walk_res_t walk_core(lv_obj_t * obj, lv_obj_tree_walk_cb_t cb, void * user_data);
45 void lv_obj_del(lv_obj_t * obj)  in lv_obj_del()  argument
47     LV_LOG_TRACE("begin (delete %p)", (void *)obj);  in lv_obj_del()
48     LV_ASSERT_OBJ(obj, MY_CLASS);  in lv_obj_del()
49     lv_obj_invalidate(obj);  in lv_obj_del()
51     lv_obj_t * par = lv_obj_get_parent(obj);  in lv_obj_del()
59         disp = lv_obj_get_disp(obj);  in lv_obj_del()
61         if(disp->act_scr == obj) act_scr_del = true;  in lv_obj_del()
64     obj_del_core(obj);  in lv_obj_del()
82     LV_LOG_TRACE("finished (delete %p)", (void *)obj);  in lv_obj_del()
85 void lv_obj_clean(lv_obj_t * obj)  in lv_obj_clean()  argument
87     LV_LOG_TRACE("begin (delete %p)", (void *)obj);  in lv_obj_clean()
88     LV_ASSERT_OBJ(obj, MY_CLASS);  in lv_obj_clean()
90     lv_obj_invalidate(obj);  in lv_obj_clean()
92     lv_obj_t * child = lv_obj_get_child(obj, 0);  in lv_obj_clean()
95         child = lv_obj_get_child(obj, 0);  in lv_obj_clean()
98     lv_obj_scroll_to(obj, 0, 0, LV_ANIM_OFF);  in lv_obj_clean()
99     if(obj->spec_attr) {  in lv_obj_clean()
100         obj->spec_attr->scroll.x = 0;  in lv_obj_clean()
101         obj->spec_attr->scroll.y = 0;  in lv_obj_clean()
106     LV_LOG_TRACE("finished (delete %p)", (void *)obj);  in lv_obj_clean()
109 void lv_obj_del_delayed(lv_obj_t * obj, uint32_t delay_ms)  in lv_obj_del_delayed()  argument
113     lv_anim_set_var(&a, obj);  in lv_obj_del_delayed()
126 void lv_obj_del_async(lv_obj_t * obj)  in lv_obj_del_async()  argument
128     LV_ASSERT_OBJ(obj, MY_CLASS);  in lv_obj_del_async()
129     lv_async_call(lv_obj_del_async_cb, obj);  in lv_obj_del_async()
132 void lv_obj_set_parent(lv_obj_t * obj, lv_obj_t * parent)  in lv_obj_set_parent()  argument
134     LV_ASSERT_OBJ(obj, MY_CLASS);  in lv_obj_set_parent()
137     if(obj->parent == NULL) {  in lv_obj_set_parent()
147     lv_obj_invalidate(obj);  in lv_obj_set_parent()
151     lv_obj_t * old_parent = obj->parent;  in lv_obj_set_parent()
154     for(i = lv_obj_get_index(obj); i <= (int32_t)lv_obj_get_child_cnt(old_parent) - 2; i++) {  in lv_obj_set_parent()
171     parent->spec_attr->children[lv_obj_get_child_cnt(parent) - 1] = obj;  in lv_obj_set_parent()
173     obj->parent = parent;  in lv_obj_set_parent()
178     lv_event_send(old_parent, LV_EVENT_CHILD_CHANGED, obj);  in lv_obj_set_parent()
182     lv_event_send(parent, LV_EVENT_CHILD_CHANGED, obj);  in lv_obj_set_parent()
185     lv_obj_mark_layout_as_dirty(obj);  in lv_obj_set_parent()
187     lv_obj_invalidate(obj);  in lv_obj_set_parent()
190 void lv_obj_move_to_index(lv_obj_t * obj, int32_t index)  in lv_obj_move_to_index()  argument
192     LV_ASSERT_OBJ(obj, MY_CLASS);  in lv_obj_move_to_index()
195         index = lv_obj_get_child_cnt(lv_obj_get_parent(obj)) + index;  in lv_obj_move_to_index()
198     const int32_t old_index = lv_obj_get_index(obj);  in lv_obj_move_to_index()
200     lv_obj_t * parent = lv_obj_get_parent(obj);  in lv_obj_move_to_index()
220     parent->spec_attr->children[index] = obj;  in lv_obj_move_to_index()
255 lv_obj_t * lv_obj_get_screen(const lv_obj_t * obj)  in lv_obj_get_screen()  argument
257     LV_ASSERT_OBJ(obj, MY_CLASS);  in lv_obj_get_screen()
259     const lv_obj_t * par = obj;  in lv_obj_get_screen()
270 lv_disp_t * lv_obj_get_disp(const lv_obj_t * obj)  in lv_obj_get_disp()  argument
272     LV_ASSERT_OBJ(obj, MY_CLASS);  in lv_obj_get_disp()
276     if(obj->parent == NULL) scr = obj;  /*`obj` is a screen*/  in lv_obj_get_disp()
277     else scr = lv_obj_get_screen(obj);  /*get the screen of `obj`*/  in lv_obj_get_disp()
291 lv_obj_t * lv_obj_get_parent(const lv_obj_t * obj)  in lv_obj_get_parent()  argument
293     if(obj == NULL) return NULL;  in lv_obj_get_parent()
294     LV_ASSERT_OBJ(obj, MY_CLASS);  in lv_obj_get_parent()
296     return obj->parent;  in lv_obj_get_parent()
299 lv_obj_t * lv_obj_get_child(const lv_obj_t * obj, int32_t id)  in lv_obj_get_child()  argument
301     LV_ASSERT_OBJ(obj, MY_CLASS);  in lv_obj_get_child()
303     if(obj->spec_attr == NULL) return NULL;  in lv_obj_get_child()
307         id = obj->spec_attr->child_cnt + id;  in lv_obj_get_child()
315     if(idu >= obj->spec_attr->child_cnt) return NULL;  in lv_obj_get_child()
316     else return obj->spec_attr->children[id];  in lv_obj_get_child()
319 uint32_t lv_obj_get_child_cnt(const lv_obj_t * obj)  in lv_obj_get_child_cnt()  argument
321     LV_ASSERT_OBJ(obj, MY_CLASS);  in lv_obj_get_child_cnt()
322     if(obj->spec_attr == NULL) return 0;  in lv_obj_get_child_cnt()
323     return obj->spec_attr->child_cnt;  in lv_obj_get_child_cnt()
326 uint32_t lv_obj_get_index(const lv_obj_t * obj)  in lv_obj_get_index()  argument
328     LV_ASSERT_OBJ(obj, MY_CLASS);  in lv_obj_get_index()
330     lv_obj_t * parent = lv_obj_get_parent(obj);  in lv_obj_get_index()
335         if(lv_obj_get_child(parent, i) == obj) return i;  in lv_obj_get_index()
350 static void lv_obj_del_async_cb(void * obj)  in lv_obj_del_async_cb()  argument
352     LV_ASSERT_OBJ(obj, MY_CLASS);  in lv_obj_del_async_cb()
354     lv_obj_del(obj);  in lv_obj_del_async_cb()
357 static void obj_del_core(lv_obj_t * obj)  in obj_del_core()  argument
360     lv_res_t res = lv_event_send(obj, LV_EVENT_DELETE, NULL);  in obj_del_core()
364     lv_obj_t * child = lv_obj_get_child(obj, 0);  in obj_del_core()
367         child = lv_obj_get_child(obj, 0);  in obj_del_core()
370     lv_group_t * group = lv_obj_get_group(obj);  in obj_del_core()
375         if(indev->proc.types.pointer.act_obj == obj || indev->proc.types.pointer.last_obj == obj) {  in obj_del_core()
376             lv_indev_reset(indev, obj);  in obj_del_core()
378         if(indev->proc.types.pointer.last_pressed == obj) {  in obj_del_core()
382         if(indev->group == group && obj == lv_indev_get_obj_act()) {  in obj_del_core()
383             lv_indev_reset(indev, obj);  in obj_del_core()
389     _lv_obj_destruct(obj);  in obj_del_core()
392     if(obj->parent == NULL) {  in obj_del_core()
393         lv_disp_t * disp = lv_obj_get_disp(obj);  in obj_del_core()
397             if(disp->screens[i] == obj) break;  in obj_del_core()
409         uint32_t id = lv_obj_get_index(obj);  in obj_del_core()
411         for(i = id; i < obj->parent->spec_attr->child_cnt - 1; i++) {  in obj_del_core()
412             obj->parent->spec_attr->children[i] = obj->parent->spec_attr->children[i + 1];  in obj_del_core()
414         obj->parent->spec_attr->child_cnt--;  in obj_del_core()
415         obj->parent->spec_attr->children = lv_mem_realloc(obj->parent->spec_attr->children,  in obj_del_core()
416 …                                           obj->parent->spec_attr->child_cnt * sizeof(lv_obj_t *));  in obj_del_core()
420     lv_mem_free(obj);  in obj_del_core()
424 static lv_obj_tree_walk_res_t walk_core(lv_obj_t * obj, lv_obj_tree_walk_cb_t cb, void * user_data)  in walk_core()  argument
428     if(obj == NULL) {  in walk_core()
440     res = cb(obj, user_data);  in walk_core()
446         for(i = 0; i < lv_obj_get_child_cnt(obj); i++) {  in walk_core()
447             res = walk_core(lv_obj_get_child(obj, i), cb, user_data);  in walk_core()