lv_bidi_get_logical_pos() function

Get the logical position of a character in a line

Syntax

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Summary

Declaration

uint16_t lv_bidi_get_logical_pos(const char * str_in, char ** bidi_txt, uint32_t len, lv_base_dir_t base_dir, uint32_t visual_pos, bool * is_rtl);

Argument

Description

str_in

the input string. Can be only one line.

bidi_txt

internally the text is bidi processed which buffer can be get here. If not required anymore has to freed with `lv_free()` Can be `NULL` is unused

len

length of the line in character count

base_dir

base direction of the text: `LV_BASE_DIR_LTR` or `LV_BASE_DIR_RTL`

visual_pos

the visual character position which logical position should be get

is_rtl

tell the char at `visual_pos` is RTL or LTR context

the logical character position

from examples