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/**
* @file lv_font.c
*
*/
/*********************
* INCLUDES
*********************/
#include "lv_font.h"
#include "../misc/lv_text.h"
#include "../misc/lv_utils.h"
#include "../misc/lv_log.h"
#include "../misc/lv_assert.h"
#include "../stdlib/lv_string.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
/**********************
* STATIC VARIABLES
**********************/
/**********************
* GLOBAL PROTOTYPES
**********************/
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
const void * lv_font_get_glyph_bitmap(lv_font_glyph_dsc_t * g_dsc, uint32_t letter,
lv_draw_buf_t * draw_buf)
{
const lv_font_t * font_p = g_dsc->resolved_font;
LV_ASSERT_NULL(font_p);
return font_p->get_glyph_bitmap(g_dsc, letter, draw_buf);
}
bool lv_font_get_glyph_dsc(const lv_font_t * font_p, lv_font_glyph_dsc_t * dsc_out, uint32_t letter,
uint32_t letter_next)
{
LV_ASSERT_NULL(font_p);
LV_ASSERT_NULL(dsc_out);
#if LV_USE_FONT_PLACEHOLDER
const lv_font_t * placeholder_font = NULL;
#endif
const lv_font_t * f = font_p;
dsc_out->resolved_font = NULL;
while(f) {
bool found = f->get_glyph_dsc(f, dsc_out, letter, f->kerning == LV_FONT_KERNING_NONE ? 0 : letter_next);
if(found) {
if(!dsc_out->is_placeholder) {
dsc_out->resolved_font = f;
return true;
}
#if LV_USE_FONT_PLACEHOLDER
else if(placeholder_font == NULL) {
placeholder_font = f;
}
#endif
}
f = f->fallback;
}
#if LV_USE_FONT_PLACEHOLDER
if(placeholder_font != NULL) {
placeholder_font->get_glyph_dsc(placeholder_font, dsc_out, letter,
placeholder_font->kerning == LV_FONT_KERNING_NONE ? 0 : letter_next);
dsc_out->resolved_font = placeholder_font;
return true;
}
#endif
#if LV_USE_FONT_PLACEHOLDER
dsc_out->box_w = font_p->line_height / 2;
dsc_out->adv_w = dsc_out->box_w + 2;
#else
dsc_out->box_w = 0;
dsc_out->adv_w = 0;
#endif
dsc_out->resolved_font = NULL;
dsc_out->box_h = font_p->line_height;
dsc_out->ofs_x = 0;
dsc_out->ofs_y = 0;
dsc_out->format = LV_FONT_GLYPH_FORMAT_A1;
dsc_out->is_placeholder = true;
return false;
}
uint16_t lv_font_get_glyph_width(const lv_font_t * font, uint32_t letter, uint32_t letter_next)
{
LV_ASSERT_NULL(font);
lv_font_glyph_dsc_t g;
/*Return zero if letter is marker*/
if(_lv_text_is_marker(letter)) return 0;
lv_font_get_glyph_dsc(font, &g, letter, letter_next);
return g.adv_w;
}
void lv_font_set_kerning(lv_font_t * font, lv_font_kerning_t kerning)
{
LV_ASSERT_NULL(font);
font->kerning = kerning;
}
/**********************
* STATIC FUNCTIONS
**********************/
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