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https://github.com/CTCaer/hekate.git
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185526d134
BDK will allow developers to use the full collection of drivers, with limited editing, if any, for making payloads for Nintendo Switch. Using a single source for everything will also help decoupling Switch specific code and easily port it to other Tegra X1/X1+ platforms. And maybe even to lower targets. Everything is now centrilized into bdk folder. Every module or project can utilize it by simply including it. This is just the start and it will continue to improve.
198 lines
6.6 KiB
C
198 lines
6.6 KiB
C
/**
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* @file lv_text.h
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*
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*/
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#ifndef LV_TXT_H
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#define LV_TXT_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*********************
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* INCLUDES
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*********************/
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#ifdef LV_CONF_INCLUDE_SIMPLE
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#include "lv_conf.h"
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#else
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#include "../../lv_conf.h"
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#endif
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#include "lv_area.h"
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#include "lv_font.h"
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#include "lv_area.h"
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/*********************
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* DEFINES
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*********************/
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#define LV_TXT_COLOR_CMD "#"
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/**********************
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* TYPEDEFS
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**********************/
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enum
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{
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LV_TXT_FLAG_NONE = 0x00,
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LV_TXT_FLAG_RECOLOR = 0x01, /*Enable parsing of recolor command*/
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LV_TXT_FLAG_EXPAND = 0x02, /*Ignore width to avoid automatic word wrapping*/
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LV_TXT_FLAG_CENTER = 0x04, /*Align the text to the middle*/
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LV_TXT_FLAG_RIGHT = 0x08, /*Align the text to the right*/
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};
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typedef uint8_t lv_txt_flag_t;
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enum
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{
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LV_TXT_CMD_STATE_WAIT, /*Waiting for command*/
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LV_TXT_CMD_STATE_PAR, /*Processing the parameter*/
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LV_TXT_CMD_STATE_IN, /*Processing the command*/
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};
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typedef uint8_t lv_txt_cmd_state_t;
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/**********************
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* GLOBAL PROTOTYPES
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**********************/
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/**
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* Get size of a text
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* @param size_res pointer to a 'point_t' variable to store the result
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* @param text pointer to a text
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* @param font pinter to font of the text
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* @param letter_space letter space of the text
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* @param line_space line space of the text
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* @param flags settings for the text from 'txt_flag_t' enum
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* @param max_width max with of the text (break the lines to fit this size) Set CORD_MAX to avoid line breaks
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*/
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void lv_txt_get_size(lv_point_t * size_res, const char * text, const lv_font_t * font,
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lv_coord_t letter_space, lv_coord_t line_space, lv_coord_t max_width, lv_txt_flag_t flag);
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/**
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* Get the next line of text. Check line length and break chars too.
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* @param txt a '\0' terminated string
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* @param font pointer to a font
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* @param letter_space letter space
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* @param max_width max with of the text (break the lines to fit this size) Set CORD_MAX to avoid line breaks
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* @param flags settings for the text from 'txt_flag_type' enum
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* @return the index of the first char of the new line (in byte index not letter index. With UTF-8 they are different)
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*/
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uint16_t lv_txt_get_next_line(const char * txt, const lv_font_t * font,
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lv_coord_t letter_space, lv_coord_t max_width, lv_txt_flag_t flag);
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/**
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* Give the length of a text with a given font
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* @param txt a '\0' terminate string
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* @param length length of 'txt' in byte count and not characters (Á is 1 character but 2 bytes in UTF-8)
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* @param font pointer to a font
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* @param letter_space letter space
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* @param flags settings for the text from 'txt_flag_t' enum
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* @return length of a char_num long text
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*/
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lv_coord_t lv_txt_get_width(const char * txt, uint16_t length,
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const lv_font_t * font, lv_coord_t letter_space, lv_txt_flag_t flag);
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/**
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* Check next character in a string and decide if te character is part of the command or not
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* @param state pointer to a txt_cmd_state_t variable which stores the current state of command processing
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* @param c the current character
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* @return true: the character is part of a command and should not be written,
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* false: the character should be written
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*/
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bool lv_txt_is_cmd(lv_txt_cmd_state_t * state, uint32_t c);
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/**
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* Insert a string into an other
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* @param txt_buf the original text (must be big enough for the result text)
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* @param pos position to insert (0: before the original text, 1: after the first char etc.)
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* @param ins_txt text to insert
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*/
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void lv_txt_ins(char * txt_buf, uint32_t pos, const char * ins_txt);
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/**
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* Delete a part of a string
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* @param txt string to modify
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* @param pos position where to start the deleting (0: before the first char, 1: after the first char etc.)
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* @param len number of characters to delete
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*/
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void lv_txt_cut(char * txt, uint32_t pos, uint32_t len);
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/***************************************************************
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* GLOBAL FUNCTION POINTERS FOR CAHRACTER ENCODING INTERFACE
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***************************************************************/
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/**
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* Give the size of an encoded character
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* @param str pointer to a character in a string
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* @return length of the encoded character (1,2,3 ...). O in invalid
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*/
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extern uint8_t (*lv_txt_encoded_size)(const char *);
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/**
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* Convert an Unicode letter to encoded
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* @param letter_uni an Unicode letter
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* @return Encoded character in Little Endian to be compatible with C chars (e.g. 'Á', 'Ü')
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*/
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extern uint32_t (*lv_txt_unicode_to_encoded)(uint32_t );
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/**
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* Convert a wide character, e.g. 'Á' little endian to be compatible with the encoded format.
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* @param c a wide character
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* @return `c` in the encoded format
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*/
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extern uint32_t (*lv_txt_encoded_conv_wc) (uint32_t c);
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/**
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* Decode the next encoded character from a string.
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* @param txt pointer to '\0' terminated string
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* @param i start index in 'txt' where to start.
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* After the call it will point to the next encoded char in 'txt'.
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* NULL to use txt[0] as index
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* @return the decoded Unicode character or 0 on invalid data code
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*/
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extern uint32_t (*lv_txt_encoded_next)(const char *, uint32_t * );
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/**
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* Get the previous encoded character form a string.
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* @param txt pointer to '\0' terminated string
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* @param i_start index in 'txt' where to start. After the call it will point to the previous encoded char in 'txt'.
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* @return the decoded Unicode character or 0 on invalid data
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*/
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extern uint32_t (*lv_txt_encoded_prev)(const char *, uint32_t *);
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/**
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* Convert a letter index (in an the encoded text) to byte index.
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* E.g. in UTF-8 "AÁRT" index of 'R' is 2 but start at byte 3 because 'Á' is 2 bytes long
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* @param txt a '\0' terminated UTF-8 string
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* @param enc_id letter index
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* @return byte index of the 'enc_id'th letter
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*/
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extern uint32_t (*lv_txt_encoded_get_byte_id)(const char *, uint32_t);
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/**
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* Convert a byte index (in an encoded text) to character index.
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* E.g. in UTF-8 "AÁRT" index of 'R' is 2 but start at byte 3 because 'Á' is 2 bytes long
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* @param txt a '\0' terminated UTF-8 string
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* @param byte_id byte index
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* @return character index of the letter at 'byte_id'th position
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*/
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extern uint32_t (*lv_encoded_get_char_id)(const char *, uint32_t);
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/**
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* Get the number of characters (and NOT bytes) in a string.
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* E.g. in UTF-8 "ÁBC" is 3 characters (but 4 bytes)
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* @param txt a '\0' terminated char string
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* @return number of characters
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*/
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extern uint32_t (*lv_txt_get_encoded_length)(const char *);
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/**********************
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* MACROS
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**********************/
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#ifdef __cplusplus
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} /* extern "C" */
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#endif
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#endif /*USE_TXT*/
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