static cairo_status_t
_cairo_sub_font_map_glyph (cairo_sub_font_t *sub_font,
unsigned long scaled_font_glyph_index,
cairo_scaled_font_subsets_glyph_t *subset_glyph)
{
cairo_sub_font_glyph_t key, *sub_font_glyph;
cairo_status_t status;
cairo_scaled_glyph_t *scaled_glyph;
_cairo_sub_font_glyph_init_key (&key, scaled_font_glyph_index);
if (! _cairo_hash_table_lookup (sub_font->sub_font_glyphs, &key.base,
(cairo_hash_entry_t **) &sub_font_glyph))
{
if (sub_font->num_glyphs_in_current_subset == sub_font->max_glyphs_per_subset)
{
sub_font->current_subset++;
sub_font->num_glyphs_in_current_subset = 0;
if (sub_font->parent->type != CAIRO_SUBSETS_SCALED) {
/* Reserve first glyph in subset for the .notdef glyph */
sub_font->num_glyphs_in_current_subset++;
}
}
status = _cairo_scaled_glyph_lookup (sub_font->scaled_font,
scaled_font_glyph_index,
CAIRO_SCALED_GLYPH_INFO_METRICS,
&scaled_glyph);
if (status)
return status;
sub_font_glyph = _cairo_sub_font_glyph_create (scaled_font_glyph_index,
sub_font->current_subset,
sub_font->num_glyphs_in_current_subset++,
scaled_glyph->metrics.x_advance);
if (sub_font_glyph == NULL)
return CAIRO_STATUS_NO_MEMORY;
if (sub_font->is_scaled)
{
if (sub_font->num_glyphs_in_current_subset > sub_font->parent->max_glyphs_per_scaled_subset_used)
sub_font->parent->max_glyphs_per_scaled_subset_used = sub_font->num_glyphs_in_current_subset;
}
else
{
if (sub_font->num_glyphs_in_current_subset > sub_font->parent->max_glyphs_per_unscaled_subset_used)
sub_font->parent->max_glyphs_per_unscaled_subset_used = sub_font->num_glyphs_in_current_subset;
}
status = _cairo_hash_table_insert (sub_font->sub_font_glyphs, &sub_font_glyph->base);
if (status) {
_cairo_sub_font_glyph_destroy (sub_font_glyph);
return status;
}
}
subset_glyph->font_id = sub_font->font_id;
subset_glyph->subset_id = sub_font_glyph->subset_id;
subset_glyph->subset_glyph_index = sub_font_glyph->subset_glyph_index;
subset_glyph->is_scaled = sub_font->is_scaled;
subset_glyph->is_composite = sub_font->is_composite;
subset_glyph->x_advance = sub_font_glyph->x_advance;
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_cairo_sub_font_add_glyph (cairo_sub_font_t *sub_font,
unsigned long scaled_font_glyph_index,
cairo_bool_t is_latin,
int latin_character,
uint32_t unicode,
char *utf8,
int utf8_len,
cairo_sub_font_glyph_t **sub_font_glyph_out)
{
cairo_scaled_glyph_t *scaled_glyph;
cairo_sub_font_glyph_t *sub_font_glyph;
int *num_glyphs_in_subset_ptr;
double x_advance;
double y_advance;
cairo_int_status_t status;
_cairo_scaled_font_freeze_cache (sub_font->scaled_font);
status = _cairo_scaled_glyph_lookup (sub_font->scaled_font,
scaled_font_glyph_index,
CAIRO_SCALED_GLYPH_INFO_METRICS,
&scaled_glyph);
assert (status != CAIRO_INT_STATUS_UNSUPPORTED);
if (unlikely (status)) {
_cairo_scaled_font_thaw_cache (sub_font->scaled_font);
return status;
}
x_advance = scaled_glyph->metrics.x_advance;
y_advance = scaled_glyph->metrics.y_advance;
_cairo_scaled_font_thaw_cache (sub_font->scaled_font);
if (!is_latin && sub_font->num_glyphs_in_current_subset == sub_font->max_glyphs_per_subset)
{
sub_font->current_subset++;
sub_font->num_glyphs_in_current_subset = 0;
}
if (is_latin)
num_glyphs_in_subset_ptr = &sub_font->num_glyphs_in_latin_subset;
else
num_glyphs_in_subset_ptr = &sub_font->num_glyphs_in_current_subset;
/* Reserve first glyph in subset for the .notdef glyph except for
* Type 3 fonts */
if (*num_glyphs_in_subset_ptr == 0 &&
scaled_font_glyph_index != 0 &&
! _cairo_font_face_is_user (sub_font->scaled_font->font_face))
{
status = _cairo_sub_font_add_glyph (sub_font,
0,
is_latin,
0,
0,
NULL,
-1,
&sub_font_glyph);
if (unlikely (status))
return status;
}
sub_font_glyph = _cairo_sub_font_glyph_create (scaled_font_glyph_index,
is_latin ? 0 : sub_font->current_subset,
*num_glyphs_in_subset_ptr,
x_advance,
y_advance,
is_latin ? latin_character : -1,
unicode,
utf8,
utf8_len);
if (unlikely (sub_font_glyph == NULL))
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
status = _cairo_hash_table_insert (sub_font->sub_font_glyphs, &sub_font_glyph->base);
if (unlikely (status)) {
_cairo_sub_font_glyph_destroy (sub_font_glyph);
return status;
}
(*num_glyphs_in_subset_ptr)++;
if (sub_font->is_scaled) {
if (*num_glyphs_in_subset_ptr > sub_font->parent->max_glyphs_per_scaled_subset_used)
sub_font->parent->max_glyphs_per_scaled_subset_used = *num_glyphs_in_subset_ptr;
} else {
if (*num_glyphs_in_subset_ptr > sub_font->parent->max_glyphs_per_unscaled_subset_used)
sub_font->parent->max_glyphs_per_unscaled_subset_used = *num_glyphs_in_subset_ptr;
}
*sub_font_glyph_out = sub_font_glyph;
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_cairo_sub_font_map_glyph (cairo_sub_font_t *sub_font,
unsigned long scaled_font_glyph_index,
const char *utf8,
int utf8_len,
cairo_scaled_font_subsets_glyph_t *subset_glyph)
{
cairo_sub_font_glyph_t key, *sub_font_glyph;
cairo_status_t status;
_cairo_sub_font_glyph_init_key (&key, scaled_font_glyph_index);
sub_font_glyph = _cairo_hash_table_lookup (sub_font->sub_font_glyphs,
&key.base);
if (sub_font_glyph == NULL) {
cairo_scaled_glyph_t *scaled_glyph;
if (sub_font->num_glyphs_in_current_subset == sub_font->max_glyphs_per_subset)
{
cairo_scaled_font_subsets_glyph_t tmp_subset_glyph;
sub_font->current_subset++;
sub_font->num_glyphs_in_current_subset = 0;
/* Reserve first glyph in subset for the .notdef glyph
* except for Type 3 fonts */
if (! _cairo_font_face_is_user (sub_font->scaled_font->font_face)) {
status = _cairo_sub_font_map_glyph (sub_font, 0, NULL, -1, &tmp_subset_glyph);
if (unlikely (status))
return status;
}
}
_cairo_scaled_font_freeze_cache (sub_font->scaled_font);
status = _cairo_scaled_glyph_lookup (sub_font->scaled_font,
scaled_font_glyph_index,
CAIRO_SCALED_GLYPH_INFO_METRICS,
&scaled_glyph);
assert (status != CAIRO_INT_STATUS_UNSUPPORTED);
if (unlikely (status)) {
_cairo_scaled_font_thaw_cache (sub_font->scaled_font);
return status;
}
sub_font_glyph = _cairo_sub_font_glyph_create (scaled_font_glyph_index,
sub_font->current_subset,
sub_font->num_glyphs_in_current_subset,
scaled_glyph->metrics.x_advance,
scaled_glyph->metrics.y_advance);
_cairo_scaled_font_thaw_cache (sub_font->scaled_font);
if (unlikely (sub_font_glyph == NULL))
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
status = _cairo_sub_font_glyph_lookup_unicode (sub_font_glyph,
sub_font->scaled_font,
scaled_font_glyph_index);
if (unlikely (status)) {
_cairo_sub_font_glyph_destroy (sub_font_glyph);
return status;
}
status = _cairo_hash_table_insert (sub_font->sub_font_glyphs, &sub_font_glyph->base);
if (unlikely (status)) {
_cairo_sub_font_glyph_destroy (sub_font_glyph);
return status;
}
sub_font->num_glyphs_in_current_subset++;
if (sub_font->is_scaled) {
if (sub_font->num_glyphs_in_current_subset > sub_font->parent->max_glyphs_per_scaled_subset_used)
sub_font->parent->max_glyphs_per_scaled_subset_used = sub_font->num_glyphs_in_current_subset;
} else {
if (sub_font->num_glyphs_in_current_subset > sub_font->parent->max_glyphs_per_unscaled_subset_used)
sub_font->parent->max_glyphs_per_unscaled_subset_used = sub_font->num_glyphs_in_current_subset;
}
}
subset_glyph->font_id = sub_font->font_id;
subset_glyph->subset_id = sub_font_glyph->subset_id;
subset_glyph->subset_glyph_index = sub_font_glyph->subset_glyph_index;
subset_glyph->is_scaled = sub_font->is_scaled;
subset_glyph->is_composite = sub_font->is_composite;
subset_glyph->x_advance = sub_font_glyph->x_advance;
subset_glyph->y_advance = sub_font_glyph->y_advance;
status = _cairo_sub_font_glyph_map_to_unicode (sub_font_glyph,
utf8, utf8_len,
&subset_glyph->utf8_is_mapped);
subset_glyph->unicode = sub_font_glyph->unicode;
return status;
}
