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Get btn index without providing list object

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This commit is contained in:
Brian Pugh
2019-01-12 12:08:41 -08:00
parent 8a3b60e0c5
commit bd30245492
2 changed files with 6 additions and 2 deletions
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lv_objx/lv_list.c
+5 -1
View File
@@ -511,13 +511,17 @@ lv_obj_t * lv_list_get_next_btn(const lv_obj_t * list, lv_obj_t * prev_btn)
/** /**
* Get the index of the button in the list * Get the index of the button in the list
* @param list pointer to a list object * @param list pointer to a list object. If NULL, assumes btn is part of a list.
* @param btn pointer to a list element (button) * @param btn pointer to a list element (button)
* @return the index of the button in the list, or -1 of the button not in this list * @return the index of the button in the list, or -1 of the button not in this list
*/ */
int32_t lv_list_get_btn_index(const lv_obj_t * list, const lv_obj_t * btn) int32_t lv_list_get_btn_index(const lv_obj_t * list, const lv_obj_t * btn)
{ {
int index = 0; int index = 0;
if( list == NULL ){
/* no list provided, assuming btn is part of a list */
list = lv_obj_get_parent(lv_obj_get_parent(btn));
}
lv_obj_t * e = lv_list_get_next_btn(list, NULL); lv_obj_t * e = lv_list_get_next_btn(list, NULL);
while(e != NULL) { while(e != NULL) {
if(e == btn) { if(e == btn) {
lv_objx/lv_list.h
+1 -1
View File
@@ -232,7 +232,7 @@ lv_obj_t * lv_list_get_next_btn(const lv_obj_t * list, lv_obj_t * prev_btn);
/** /**
* Get the index of the button in the list * Get the index of the button in the list
* @param list pointer to a list object * @param list pointer to a list object. If NULL, assumes btn is part of a list.
* @param btn pointer to a list element (button) * @param btn pointer to a list element (button)
* @return the index of the button in the list, or -1 of the button not in this list * @return the index of the button in the list, or -1 of the button not in this list
*/ */