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hekate/bdk/libs/lvgl/lv_misc/lv_font.h

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/**
* @file lv_font.h
*
*/
#ifndef LV_FONT_H
#define LV_FONT_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#ifdef LV_CONF_INCLUDE_SIMPLE
#include "lv_conf.h"
#else
#include "../../lv_conf.h"
#endif
#include <stdint.h>
#include <stddef.h>
#include "lv_symbol_def.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
typedef struct
{
uint32_t w_px :8;
uint32_t glyph_index :24;
} lv_font_glyph_dsc_t;
typedef struct
{
uint32_t unicode :21;
uint32_t glyph_dsc_index :11;
} lv_font_unicode_map_t;
typedef struct _lv_font_struct
{
uint32_t unicode_first;
uint32_t unicode_last;
const uint8_t * glyph_bitmap;
const lv_font_glyph_dsc_t * glyph_dsc;
const uint32_t * unicode_list;
const uint8_t * (*get_bitmap)(const struct _lv_font_struct *,uint32_t); /*Get a glyph's bitmap from a font*/
int16_t (*get_width)(const struct _lv_font_struct *,uint32_t); /*Get a glyph's with with a given font*/
struct _lv_font_struct * next_page; /*Pointer to a font extension*/
uint32_t h_px :8;
uint32_t bpp :4; /*Bit per pixel: 1, 2 or 4*/
uint32_t monospace :8; /*Fix width (0: normal width)*/
uint16_t glyph_cnt; /*Number of glyphs (letters) in the font*/
} lv_font_t;
/**********************
* GLOBAL PROTOTYPES
**********************/
/**
* Initialize the fonts
*/
void lv_font_init(void);
/**
* Add a font to an other to extend the character set.
* @param child the font to add
* @param parent this font will be extended. Using it later will contain the characters from `child`
*/
void lv_font_add(lv_font_t *child, lv_font_t *parent);
/**
* Remove a font from a character set.
* @param child the font to remove
* @param parent remove `child` from here
*/
void lv_font_remove(lv_font_t * child, lv_font_t * parent);
/**
* Tells if font which contains `letter` is monospace or not
* @param font_p point to font
* @param letter an UNICODE character code
* @return true: the letter is monospace; false not monospace
*/
bool lv_font_is_monospace(const lv_font_t * font_p, uint32_t letter);
/**
* Return with the bitmap of a font.
* @param font_p pointer to a font
* @param letter an UNICODE character code
* @return pointer to the bitmap of the letter
*/
const uint8_t * lv_font_get_bitmap(const lv_font_t * font_p, uint32_t letter);
/**
* Get the width of a letter in a font. If `monospace` is set then return with it.
* @param font_p pointer to a font
* @param letter an UNICODE character code
* @return the width of a letter
*/
uint8_t lv_font_get_width(const lv_font_t * font_p, uint32_t letter);
/**
* Get the width of the letter without overwriting it with the `monospace` attribute
* @param font_p pointer to a font
* @param letter an UNICODE character code
* @return the width of a letter
*/
uint8_t lv_font_get_real_width(const lv_font_t * font_p, uint32_t letter);
/**
* Get the height of a font
* @param font_p pointer to a font
* @return the height of a font
*/
static inline uint8_t lv_font_get_height(const lv_font_t * font_p)
{
return font_p->h_px;
}
/**
* Get the bit-per-pixel of font
* @param font pointer to font
* @param letter a letter from font (font extensions can have different bpp)
* @return bpp of the font (or font extension)
*/
uint8_t lv_font_get_bpp(const lv_font_t * font, uint32_t letter);
/**
* Generic bitmap get function used in 'font->get_bitmap' when the font contains all characters in the range
* @param font pointer to font
* @param unicode_letter an unicode letter which bitmap should be get
* @return pointer to the bitmap or NULL if not found
*/
const uint8_t * lv_font_get_bitmap_continuous(const lv_font_t * font, uint32_t unicode_letter);
/**
* Generic bitmap get function used in 'font->get_bitmap' when the font NOT contains all characters in the range (sparse)
* @param font pointer to font
* @param unicode_letter an unicode letter which bitmap should be get
* @return pointer to the bitmap or NULL if not found
*/
const uint8_t * lv_font_get_bitmap_sparse(const lv_font_t * font, uint32_t unicode_letter);
/**
* Generic glyph width get function used in 'font->get_width' when the font contains all characters in the range
* @param font pointer to font
* @param unicode_letter an unicode letter which width should be get
* @return width of the gylph or -1 if not found
*/
int16_t lv_font_get_width_continuous(const lv_font_t * font, uint32_t unicode_letter);
/**
* Generic glyph width get function used in 'font->get_bitmap' when the font NOT contains all characters in the range (sparse)
* @param font pointer to font
* @param unicode_letter an unicode letter which width should be get
* @return width of the glyph or -1 if not found
*/
int16_t lv_font_get_width_sparse(const lv_font_t * font, uint32_t unicode_letter);
/**********************
* MACROS
**********************/
#define LV_FONT_DECLARE(font_name) extern lv_font_t font_name;
/**********************
* ADD BUILT IN FONTS
**********************/
#include "../lv_fonts/lv_font_builtin.h"
/*Declare the custom (user defined) fonts*/
#ifdef LV_FONT_CUSTOM_DECLARE
LV_FONT_CUSTOM_DECLARE
#endif
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /*USE_FONT*/