12345678910111213141516171819202122232425262728293031323334353637383940414243 |
- /**
- * @file fontutils.h
- * @brief help functions for font and char
- * @author Yunhui Fu (yhfudev@gmail.com)
- * @version 1.0
- * @date 2016-08-19
- * @copyright GPL/BSD
- */
- #pragma once
-
- #include <stdlib.h>
- #include <stddef.h> // wchar_t
- #include <stdint.h> // uint32_t
-
- #include "../HAL/shared/Marduino.h"
- #include "../core/macros.h"
-
- // read a byte from ROM or RAM
- typedef uint8_t (*read_byte_cb_t)(uint8_t * str);
-
- uint8_t read_byte_ram(uint8_t * str);
- uint8_t read_byte_rom(uint8_t * str);
-
- // there's overflow of the wchar_t due to the 2-byte size in Arduino
- // sizeof(wchar_t)=2; sizeof(size_t)=2; sizeof(uint32_t)=4;
- // sizeof(int)=2; sizeof(long)=4; sizeof(unsigned)=2;
- //#undef wchar_t
- #define wchar_t uint32_t
- //typedef uint32_t wchar_t;
-
- typedef uint16_t pixel_len_t;
- #define PIXEL_LEN_NOLIMIT ((pixel_len_t)(-1))
-
- /* Perform binary search */
- typedef int (* pf_bsearch_cb_comp_t)(void *userdata, size_t idx, void * data_pin); /*"data_list[idx] - *data_pin"*/
- int pf_bsearch_r(void *userdata, size_t num_data, pf_bsearch_cb_comp_t cb_comp, void *data_pinpoint, size_t *ret_idx);
-
- /* Get the character, decoding multibyte UTF8 characters and returning a pointer to the start of the next UTF8 character */
- uint8_t* get_utf8_value_cb(uint8_t *pstart, read_byte_cb_t cb_read_byte, wchar_t *pval);
-
- /* Returns lenght of string in CHARACTERS, NOT BYTES */
- uint8_t utf8_strlen(const char *pstart);
- uint8_t utf8_strlen_P(PGM_P pstart);
|