u8g2_uint_t u8g2_DrawExtUTF8(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, uint8_t to_left, const uint16_t *kerning_table, const char *str)
{
u8g2->u8x8.next_cb = u8x8_utf8_next;
uint16_t e_prev = 0x0ffff;
uint16_t e;
u8g2_uint_t delta, sum, k;
u8x8_utf8_init(u8g2_GetU8x8(u8g2));
sum = 0;
for(;;)
{
e = u8g2->u8x8.next_cb(u8g2_GetU8x8(u8g2), (uint8_t)*str);
if ( e == 0x0ffff )
break;
str++;
if ( e != 0x0fffe )
{
delta = u8g2_GetGlyphWidth(u8g2, e);
if ( to_left )
{
k = u8g2_GetKerningByTable(u8g2, kerning_table, e, e_prev);
delta -= k;
x -= delta;
}
else
{
k = u8g2_GetKerningByTable(u8g2, kerning_table, e_prev, e);
delta -= k;
}
e_prev = e;
if ( to_left )
{
}
else
{
x += delta;
}
u8g2_DrawGlyph(u8g2, x, y, e);
if ( to_left )
{
}
else
{
//x += delta;
//x -= k;
}
sum += delta;
}
}
return sum;
}
static u8g2_uint_t u8g2_draw_string(u8g2_t *u8g2, u8g2_uint_t x, u8g2_uint_t y, const char *str)
{
uint16_t e;
u8g2_uint_t delta, sum;
u8x8_utf8_init(u8g2_GetU8x8(u8g2));
sum = 0;
for(;;)
{
e = u8g2->u8x8.next_cb(u8g2_GetU8x8(u8g2), (uint8_t)*str);
if ( e == 0x0ffff )
break;
str++;
if ( e != 0x0fffe )
{
delta = u8g2_DrawGlyph(u8g2, x, y, e);
#ifdef U8G2_WITH_FONT_ROTATION
switch(u8g2->font_decode.dir)
{
case 0:
x += delta;
break;
case 1:
y += delta;
break;
case 2:
x -= delta;
break;
case 3:
y -= delta;
break;
}
#else
x += delta;
#endif
sum += delta;
}
}
return sum;
}
static u8g2_uint_t u8g2_string_width(u8g2_t *u8g2, const char *str)
{
uint16_t e;
u8g2_uint_t w, dx;
u8g2->font_decode.glyph_width = 0;
u8x8_utf8_init(u8g2_GetU8x8(u8g2));
/* reset the total width to zero, this will be expanded during calculation */
w = 0;
dx = 0;
// printf("str=<%s>\n", str);
for(;;)
{
e = u8g2->u8x8.next_cb(u8g2_GetU8x8(u8g2), (uint8_t)*str);
if ( e == 0x0ffff )
break;
str++;
if ( e != 0x0fffe )
{
dx = u8g2_GetGlyphWidth(u8g2, e); /* delta x value of the glyph */
w += dx;
}
}
/* adjust the last glyph, check for issue #16: do not adjust if width is 0 */
if ( u8g2->font_decode.glyph_width != 0 )
{
w -= dx;
w += u8g2->font_decode.glyph_width; /* the real pixel width of the glyph, sideeffect of GetGlyphWidth */
/* issue #46: we have to add the x offset also */
w += u8g2->glyph_x_offset; /* this value is set as a side effect of u8g2_GetGlyphWidth() */
}
// printf("w=%d \n", w);
return w;
}
