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- /**
- * Marlin 3D Printer Firmware
- * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
- *
- * Based on Sprinter and grbl.
- * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <https://www.gnu.org/licenses/>.
- *
- */
-
- /**
- * @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 <stdint.h> // uint32_t
-
- #include "../HAL/shared/Marduino.h"
- #include "../core/macros.h"
-
- #define MAX_UTF8_CHAR_SIZE 4
-
- // Use a longer character type (if needed) because wchar_t is only 16 bits wide
- #ifdef MAX_UTF8_CHAR_SIZE
- #if MAX_UTF8_CHAR_SIZE > 2
- typedef uint32_t lchar_t;
- #else
- typedef wchar_t lchar_t;
- #endif
- #else
- #define wchar_t uint32_t
- #endif
-
- // read a byte from ROM or RAM
- typedef uint8_t (*read_byte_cb_t)(const uint8_t * str);
-
- uint8_t read_byte_ram(const uint8_t *str);
- uint8_t read_byte_rom(const uint8_t *str);
-
- 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);
- 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 */
- const uint8_t* get_utf8_value_cb(const uint8_t *pstart, read_byte_cb_t cb_read_byte, lchar_t &pval);
-
- inline const char* get_utf8_value_cb(const char *pstart, read_byte_cb_t cb_read_byte, lchar_t &pval) {
- return (const char *)get_utf8_value_cb((const uint8_t *)pstart, cb_read_byte, pval);
- }
-
- /* Returns length of string in CHARACTERS, NOT BYTES */
- uint8_t utf8_strlen(const char *pstart);
- uint8_t utf8_strlen_P(PGM_P pstart);
- inline uint8_t utf8_strlen(FSTR_P fstart) { return utf8_strlen_P(FTOP(fstart)); }
-
- /* Returns start byte position of desired char number */
- uint8_t utf8_byte_pos_by_char_num(const char *pstart, const uint8_t charnum);
- uint8_t utf8_byte_pos_by_char_num_P(PGM_P pstart, const uint8_t charnum);
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