mirror of
https://github.com/lvgl/lvgl.git
synced 2025-01-21 06:53:01 +08:00
c6b7cf130b
TODO: conditional LV_USE_BIDI, allocate global buffer once, pass dir as parameter to lv_draw_label
75 lines
1.6 KiB
C
75 lines
1.6 KiB
C
/**
|
|
* @file lv_bifi.h
|
|
*
|
|
*/
|
|
|
|
#ifndef LV_BIDI_H
|
|
#define LV_BIDI_H
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/*********************
|
|
* INCLUDES
|
|
*********************/
|
|
#ifdef LV_CONF_INCLUDE_SIMPLE
|
|
#include "lv_conf.h"
|
|
#else
|
|
#include "../../../lv_conf.h"
|
|
#endif
|
|
|
|
#include <stdbool.h>
|
|
#include <stdint.h>
|
|
|
|
/*********************
|
|
* DEFINES
|
|
*********************/
|
|
/* Special non printable strong characters.
|
|
* They can be inserted to texts to affect the run's direction*/
|
|
#define LV_BIDI_LRO "\xE2\x80\xAD" /*U+202D*/
|
|
#define LV_BIDI_RLO "\xE2\x80\xAE" /*U+202E*/
|
|
|
|
/**********************
|
|
* TYPEDEFS
|
|
**********************/
|
|
enum
|
|
{
|
|
/*The first 4 values are stored in `lv_obj_t` on 2 bits*/
|
|
LV_BIDI_DIR_LTR = 0x00,
|
|
LV_BIDI_DIR_RTL = 0x01,
|
|
LV_BIDI_DIR_AUTO = 0x02,
|
|
LV_BIDI_DIR_INHERIT = 0x03,
|
|
|
|
LV_BIDI_DIR_NEUTRAL = 0x20,
|
|
LV_BIDI_DIR_WEAK = 0x21,
|
|
};
|
|
|
|
typedef uint8_t lv_bidi_dir_t;
|
|
|
|
/**********************
|
|
* GLOBAL PROTOTYPES
|
|
**********************/
|
|
#if LV_USE_BIDI
|
|
|
|
void lv_bidi_process(const char * str_in, char * str_out, lv_bidi_dir_t base_dir);
|
|
void lv_bidi_process_paragraph(const char * str_in, char * str_out, uint32_t len, lv_bidi_dir_t base_dir);
|
|
uint32_t lv_bidi_get_next_paragraph(const char * txt);
|
|
lv_bidi_dir_t lv_bidi_detect_base_dir(const char * txt);
|
|
lv_bidi_dir_t lv_bidi_get_letter_dir(uint32_t letter);
|
|
bool lv_bidi_letter_is_weak(uint32_t letter);
|
|
bool lv_bidi_letter_is_rtl(uint32_t letter);
|
|
bool lv_bidi_letter_is_neutral(uint32_t letter);
|
|
|
|
/**********************
|
|
* MACROS
|
|
**********************/
|
|
|
|
#endif /*LV_USE_BIDI*/
|
|
|
|
#ifdef __cplusplus
|
|
} /* extern "C" */
|
|
#endif
|
|
|
|
#endif /*LV_BIDI_H*/
|