lv_iter_private.h

lv_iter_get_context

Get the context of the iterator. You can use it to store some temporary variables associated with current iterator..

void * lv_iter_get_context(const lv_iter_t *iter)

Returns: void * — the iter context

lv_iter_create

Create an iterator based on an instance, and then the next element of the iterator can be obtained through lv_iter_next, In order to obtain the next operation in a unified and abstract way.

lv_iter_t * lv_iter_create(void *instance, uint32_t elem_size, uint32_t context_size, lv_iter_next_cb next_cb)

Returns: lv_iter_t * — The iterator object

lv_iter_destroy

Destroy the iterator object, and release the context. Other resources allocated by the user are not released. The user needs to release it by itself.

void lv_iter_destroy(lv_iter_t *iter)

lv_iter_next

Get the next element of the iterator.

lv_result_t lv_iter_next(lv_iter_t *iter, void *elem)

Returns: lv_result_t — LV_RESULT_OK: Get the next element successfully LV_RESULT_INVALID: The next element is invalid

lv_iter_make_peekable

Make the iterator peekable, which means that the user can peek the next element without advancing the iterator.

void lv_iter_make_peekable(lv_iter_t *iter, uint32_t capacity)

lv_iter_peek

Peek the next element of the iterator without advancing the iterator.

lv_result_t lv_iter_peek(lv_iter_t *iter, void *elem)

Returns: lv_result_t — LV_RESULT_OK: Peek the next element successfully LV_RESULT_INVALID: The next element is invalid

lv_iter_peek_advance

Only advance the iterator without getting the next element.

lv_result_t lv_iter_peek_advance(lv_iter_t *iter)

Returns: lv_result_t — LV_RESULT_OK: Peek the next element successfully LV_RESULT_INVALID: The next element is invalid

lv_iter_peek_reset

Reset the peek cursor to the next cursor.

lv_result_t lv_iter_peek_reset(lv_iter_t *iter)

Returns: lv_result_t — LV_RESULT_OK: Reset the peek buffer successfully LV_RESULT_INVALID: The peek buffer is invalid

lv_iter_inspect

Inspect the element of the iterator. The callback function will be called for each element of the iterator.

void lv_iter_inspect(lv_iter_t *iter, lv_iter_inspect_cb inspect_cb)