struct grub_font_glyph *
grub_font_construct_glyph (grub_font_t hinted_font,
const struct grub_unicode_glyph *glyph_id)
{
struct grub_font_glyph *main_glyph;
struct grub_video_signed_rect bounds;
struct grub_font_glyph *glyph;
struct grub_font_glyph **combining_glyphs;
main_glyph = grub_font_construct_dry_run (hinted_font, glyph_id,
&bounds, &combining_glyphs, NULL);
if (!main_glyph)
return grub_font_dup_glyph (unknown_glyph);
if (!combining_glyphs)
return grub_font_dup_glyph (main_glyph);
glyph =
grub_zalloc (sizeof (*glyph) + (bounds.width * bounds.height + 7) / 8);
if (!glyph)
{
grub_errno = GRUB_ERR_NONE;
return grub_font_dup_glyph (main_glyph);
}
glyph->font = main_glyph->font;
glyph->width = bounds.width;
glyph->height = bounds.height;
glyph->offset_x = bounds.x;
glyph->offset_y = bounds.y;
if (glyph_id->attributes & GRUB_UNICODE_GLYPH_ATTRIBUTE_MIRROR)
grub_font_blit_glyph_mirror (glyph, main_glyph,
main_glyph->offset_x - glyph->offset_x,
(glyph->height + glyph->offset_y)
- (main_glyph->height +
main_glyph->offset_y));
else
grub_font_blit_glyph (glyph, main_glyph,
main_glyph->offset_x - glyph->offset_x,
(glyph->height + glyph->offset_y)
- (main_glyph->height + main_glyph->offset_y));
blit_comb (glyph_id, glyph, NULL, main_glyph, combining_glyphs, NULL);
return glyph;
}
struct grub_font_glyph *
grub_font_construct_glyph (grub_font_t hinted_font,
const struct grub_unicode_glyph *glyph_id)
{
struct grub_font_glyph *main_glyph;
struct grub_video_signed_rect bounds;
static struct grub_font_glyph *glyph = 0;
static grub_size_t max_glyph_size = 0;
ensure_comb_space (glyph_id);
main_glyph = grub_font_construct_dry_run (hinted_font, glyph_id,
&bounds, render_combining_glyphs,
NULL);
if (!main_glyph)
return unknown_glyph;
if (!render_combining_glyphs && glyph_id->ncomb)
return main_glyph;
if (!glyph_id->ncomb && !glyph_id->attributes)
return main_glyph;
if (max_glyph_size < sizeof (*glyph) + (bounds.width * bounds.height + GRUB_CHAR_BIT - 1) / GRUB_CHAR_BIT)
{
grub_free (glyph);
max_glyph_size = (sizeof (*glyph) + (bounds.width * bounds.height + GRUB_CHAR_BIT - 1) / GRUB_CHAR_BIT) * 2;
if (max_glyph_size < 8)
max_glyph_size = 8;
glyph = grub_malloc (max_glyph_size);
}
if (!glyph)
{
grub_errno = GRUB_ERR_NONE;
return main_glyph;
}
grub_memset (glyph, 0, sizeof (*glyph)
+ (bounds.width * bounds.height
+ GRUB_CHAR_BIT - 1) / GRUB_CHAR_BIT);
glyph->font = main_glyph->font;
glyph->width = bounds.width;
glyph->height = bounds.height;
glyph->offset_x = bounds.x;
glyph->offset_y = bounds.y;
if (glyph_id->attributes & GRUB_UNICODE_GLYPH_ATTRIBUTE_MIRROR)
grub_font_blit_glyph_mirror (glyph, main_glyph,
main_glyph->offset_x - glyph->offset_x,
(glyph->height + glyph->offset_y)
- (main_glyph->height +
main_glyph->offset_y));
else
grub_font_blit_glyph (glyph, main_glyph,
main_glyph->offset_x - glyph->offset_x,
(glyph->height + glyph->offset_y)
- (main_glyph->height + main_glyph->offset_y));
blit_comb (glyph_id, glyph, NULL, main_glyph, render_combining_glyphs, NULL);
return glyph;
}
static struct grub_font_glyph *
grub_font_construct_dry_run (grub_font_t hinted_font,
const struct grub_unicode_glyph *glyph_id,
struct grub_video_signed_rect *bounds,
struct grub_font_glyph **combining_glyphs,
int *device_width)
{
struct grub_font_glyph *main_glyph = NULL;
grub_uint32_t desired_attributes = 0;
unsigned i;
grub_uint32_t base = glyph_id->base;
const struct grub_unicode_combining *comb;
if (glyph_id->attributes & GRUB_UNICODE_GLYPH_ATTRIBUTE_RIGHT_JOINED)
desired_attributes |= GRUB_FONT_CODE_RIGHT_JOINED;
if (glyph_id->attributes & GRUB_UNICODE_GLYPH_ATTRIBUTE_LEFT_JOINED)
desired_attributes |= GRUB_FONT_CODE_LEFT_JOINED;
comb = grub_unicode_get_comb (glyph_id);
if (base == 'i' || base == 'j')
{
for (i = 0; i < glyph_id->ncomb; i++)
if (comb[i].type == GRUB_UNICODE_STACK_ABOVE)
break;
if (i < glyph_id->ncomb && base == 'i')
base = GRUB_UNICODE_DOTLESS_LOWERCASE_I;
if (i < glyph_id->ncomb && base == 'j')
base = GRUB_UNICODE_DOTLESS_LOWERCASE_J;
}
main_glyph = grub_font_get_glyph_with_fallback (hinted_font, base
| desired_attributes);
if (!main_glyph)
main_glyph = grub_font_get_glyph_with_fallback (hinted_font,
base);
/* Glyph not available in any font. Use ASCII fallback. */
if (!main_glyph)
main_glyph = ascii_glyph_lookup (base);
/* Glyph not available in any font. Return unknown glyph. */
if (!main_glyph)
return NULL;
if (device_width)
*device_width = main_glyph->device_width;
if (!glyph_id->ncomb && !glyph_id->attributes)
return main_glyph;
if (glyph_id->ncomb && !combining_glyphs)
{
grub_errno = GRUB_ERR_NONE;
return main_glyph;
}
for (i = 0; i < glyph_id->ncomb; i++)
combining_glyphs[i]
= grub_font_get_glyph_with_fallback (main_glyph->font,
comb[i].code);
blit_comb (glyph_id, NULL, bounds, main_glyph, combining_glyphs,
device_width);
return main_glyph;
}
