/* Get the width of a letter in a font. If  */
uint8_t lv_font_get_width(const lv_font_t *font_p, uint32_t letter)
/* Get the width of a letter in a font. If  */
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) {
            uint8_t m = font_i->monospace;
            if(m) w = m;
            return w;
        }
        font_i = font_i->next_page;
    }
    return 0;
}