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lv_font: add monospace support

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This commit is contained in:
Gabor Kiss-Vamosi
2018-06-22 23:32:21 +02:00
parent 7503242a6a
commit 46ae9146d8
18 changed files with 104 additions and 26 deletions
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58
lv_misc/lv_font.c
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@@ -18,11 +18,6 @@
/**********************
* TYPEDEFS
**********************/
typedef struct {
uint32_t glyph_index;
uint32_t unicode;
uint8_t w_px;
} asd_glyph_dsc_t;
/**********************
* STATIC PROTOTYPES
@@ -191,10 +186,34 @@ void lv_font_add(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)
{
const lv_font_t * font_i = font_p;
int16_t w;
while(font_i != NULL) {
w = font_i->get_width(font_i, letter);
if(w >= 0) {
/*Glyph found*/
if(font_i->monospace) return true;
return false;
}
font_i = font_i->next_page;
}
return 0;
}
/**
* Return with the bitmap of a font.
* @param font_p pointer to a font
* @param letter a letter
* @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)
@@ -211,12 +230,37 @@ 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
* 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)
{
const lv_font_t * font_i = font_p;
int16_t w;
while(font_i != NULL) {
w = font_i->get_width(font_i, letter);
if(w >= 0) {
/*Glyph found*/
uint8_t m = font_i->monospace;
if(m) w = m;
return w;
}
font_i = font_i->next_page;
}
return 0;
}
/**
* 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)
{
const lv_font_t * font_i = font_p;
int16_t w;