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Update lv_list.c

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This commit is contained in:
fallstool
2018-10-30 16:38:39 +08:00
committed by GitHub
parent 686c6c9033
commit 5b05afe948
1 changed files with 58 additions and 1 deletions
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lv_objx/lv_list.c
+58 -1
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@@ -174,7 +174,7 @@ lv_obj_t * lv_list_add(lv_obj_t * list, const void * img_src, const char * txt,
{
lv_style_t * style = lv_obj_get_style(list);
lv_list_ext_t * ext = lv_obj_get_ext_attr(list);
ext->size ++;
/*Create a list element with the image an the text*/
lv_obj_t * liste;
liste = lv_btn_create(list, NULL);
@@ -225,6 +225,31 @@ lv_obj_t * lv_list_add(lv_obj_t * list, const void * img_src, const char * txt,
return liste;
}
/**
* Remove the index of the button in the list
* @param list pointer to a list object
* @param index pointer to a the button's index in the list, index must be 0 <= index < lv_list_ext_t.size
* @return true: successfully deleted
*/
bool lv_list_remove(const lv_obj_t * list, uint32_t index)
{
lv_list_ext_t * ext = lv_obj_get_ext_attr(list);
if(index < 0 && index >= ext->size) return false;
int count = 0;
lv_obj_t * e = lv_list_get_next_btn(list, NULL);
while(e != NULL) {
if(count == index)
{
lv_obj_del(e);
ext->size --;
return true;
}
e = lv_list_get_next_btn(list, e);
count ++;
}
return false;
}
/*=====================
* Setter functions
*====================*/
@@ -441,6 +466,38 @@ lv_obj_t * lv_list_get_next_btn(const lv_obj_t * list, lv_obj_t * prev_btn)
return btn;
}
/**
* Get the index of the button in the list
* @param list pointer to a list object
* @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
*/
int lv_list_get_btn_index(const lv_obj_t * list, const lv_obj_t * btn)
{
int index = 0;
lv_obj_t * e = lv_list_get_next_btn(list, NULL);
while(e != NULL) {
if(e == btn)
{
return index;
}
index ++;
e = lv_list_get_next_btn(list, e);
}
return -1;
}
/**
* Get the number of buttons in the list
* @param list pointer to a list object
* @return the number of buttons in the list
*/
uint32_t lv_list_get_size(const lv_obj_t * list)
{
lv_list_ext_t * ext = lv_obj_get_ext_attr(list);
return ext->size;
}
#if USE_LV_GROUP
/**
* Get the currently selected button