cairo_status_t
_cairo_scaled_font_subsets_map_glyph (cairo_scaled_font_subsets_t *subsets,
cairo_scaled_font_t *scaled_font,
unsigned long scaled_font_glyph_index,
const char * utf8,
int utf8_len,
cairo_scaled_font_subsets_glyph_t *subset_glyph)
{
cairo_sub_font_t key, *sub_font;
cairo_scaled_glyph_t *scaled_glyph;
cairo_font_face_t *font_face;
cairo_matrix_t identity;
cairo_font_options_t font_options;
cairo_scaled_font_t *unscaled_font;
cairo_int_status_t status;
int max_glyphs;
cairo_bool_t type1_font;
/* Lookup glyph in unscaled subsets */
if (subsets->type != CAIRO_SUBSETS_SCALED) {
key.is_scaled = FALSE;
_cairo_sub_font_init_key (&key, scaled_font);
sub_font = _cairo_hash_table_lookup (subsets->unscaled_sub_fonts,
&key.base);
if (sub_font != NULL) {
status = _cairo_sub_font_lookup_glyph (sub_font,
scaled_font_glyph_index,
utf8, utf8_len,
subset_glyph);
if (status != CAIRO_INT_STATUS_UNSUPPORTED)
return status;
}
}
/* Lookup glyph in scaled subsets */
key.is_scaled = TRUE;
_cairo_sub_font_init_key (&key, scaled_font);
sub_font = _cairo_hash_table_lookup (subsets->scaled_sub_fonts,
&key.base);
if (sub_font != NULL) {
status = _cairo_sub_font_lookup_glyph (sub_font,
scaled_font_glyph_index,
utf8, utf8_len,
subset_glyph);
if (status != CAIRO_INT_STATUS_UNSUPPORTED)
return status;
}
/* Glyph not found. Determine whether the glyph is outline or
* bitmap and add to the appropriate subset.
*
* glyph_index 0 (the .notdef glyph) is a special case. Some fonts
* will return CAIRO_INT_STATUS_UNSUPPORTED when doing a
* _scaled_glyph_lookup(_GLYPH_INFO_PATH). Type1-fallback creates
* empty glyphs in this case so we can put the glyph in a unscaled
* subset. */
if (scaled_font_glyph_index == 0 ||
_cairo_font_face_is_user (scaled_font->font_face)) {
status = CAIRO_STATUS_SUCCESS;
} else {
_cairo_scaled_font_freeze_cache (scaled_font);
status = _cairo_scaled_glyph_lookup (scaled_font,
scaled_font_glyph_index,
CAIRO_SCALED_GLYPH_INFO_PATH,
&scaled_glyph);
_cairo_scaled_font_thaw_cache (scaled_font);
}
if (_cairo_int_status_is_error (status))
return status;
if (status == CAIRO_INT_STATUS_SUCCESS &&
subsets->type != CAIRO_SUBSETS_SCALED &&
! _cairo_font_face_is_user (scaled_font->font_face))
{
/* Path available. Add to unscaled subset. */
key.is_scaled = FALSE;
_cairo_sub_font_init_key (&key, scaled_font);
sub_font = _cairo_hash_table_lookup (subsets->unscaled_sub_fonts,
&key.base);
if (sub_font == NULL) {
font_face = cairo_scaled_font_get_font_face (scaled_font);
cairo_matrix_init_identity (&identity);
_cairo_font_options_init_default (&font_options);
cairo_font_options_set_hint_style (&font_options, CAIRO_HINT_STYLE_NONE);
cairo_font_options_set_hint_metrics (&font_options, CAIRO_HINT_METRICS_OFF);
unscaled_font = cairo_scaled_font_create (font_face,
&identity,
&identity,
&font_options);
if (unlikely (unscaled_font->status))
return unscaled_font->status;
subset_glyph->is_scaled = FALSE;
type1_font = _cairo_type1_scaled_font_is_type1 (unscaled_font);
if (subsets->type == CAIRO_SUBSETS_COMPOSITE && !type1_font) {
max_glyphs = MAX_GLYPHS_PER_COMPOSITE_FONT;
subset_glyph->is_composite = TRUE;
} else {
max_glyphs = MAX_GLYPHS_PER_SIMPLE_FONT;
subset_glyph->is_composite = FALSE;
}
status = _cairo_sub_font_create (subsets,
unscaled_font,
subsets->num_sub_fonts,
max_glyphs,
subset_glyph->is_scaled,
subset_glyph->is_composite,
&sub_font);
if (unlikely (status)) {
cairo_scaled_font_destroy (unscaled_font);
return status;
}
status = _cairo_hash_table_insert (subsets->unscaled_sub_fonts,
&sub_font->base);
if (unlikely (status)) {
_cairo_sub_font_destroy (sub_font);
return status;
}
if (!subsets->unscaled_sub_fonts_list)
subsets->unscaled_sub_fonts_list = sub_font;
else
subsets->unscaled_sub_fonts_list_end->next = sub_font;
subsets->unscaled_sub_fonts_list_end = sub_font;
subsets->num_sub_fonts++;
}
} else {
/* No path available. Add to scaled subset. */
key.is_scaled = TRUE;
_cairo_sub_font_init_key (&key, scaled_font);
sub_font = _cairo_hash_table_lookup (subsets->scaled_sub_fonts,
&key.base);
if (sub_font == NULL) {
subset_glyph->is_scaled = TRUE;
subset_glyph->is_composite = FALSE;
if (subsets->type == CAIRO_SUBSETS_SCALED)
max_glyphs = INT_MAX;
else
max_glyphs = MAX_GLYPHS_PER_SIMPLE_FONT;
status = _cairo_sub_font_create (subsets,
cairo_scaled_font_reference (scaled_font),
subsets->num_sub_fonts,
max_glyphs,
subset_glyph->is_scaled,
subset_glyph->is_composite,
&sub_font);
if (unlikely (status)) {
cairo_scaled_font_destroy (scaled_font);
return status;
}
status = _cairo_hash_table_insert (subsets->scaled_sub_fonts,
&sub_font->base);
if (unlikely (status)) {
_cairo_sub_font_destroy (sub_font);
return status;
}
if (!subsets->scaled_sub_fonts_list)
subsets->scaled_sub_fonts_list = sub_font;
else
subsets->scaled_sub_fonts_list_end->next = sub_font;
subsets->scaled_sub_fonts_list_end = sub_font;
subsets->num_sub_fonts++;
}
}
return _cairo_sub_font_map_glyph (sub_font,
scaled_font_glyph_index,
utf8, utf8_len,
subset_glyph);
}
static cairo_status_t
_cairo_sub_font_create (cairo_scaled_font_subsets_t *parent,
cairo_scaled_font_t *scaled_font,
unsigned int font_id,
int max_glyphs_per_subset,
cairo_bool_t is_scaled,
cairo_bool_t is_composite,
cairo_sub_font_t **sub_font_out)
{
cairo_sub_font_t *sub_font;
int i;
sub_font = _cairo_malloc (sizeof (cairo_sub_font_t));
if (unlikely (sub_font == NULL))
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
sub_font->is_scaled = is_scaled;
sub_font->is_composite = is_composite;
sub_font->is_user = _cairo_font_face_is_user (scaled_font->font_face);
sub_font->reserve_notdef = !sub_font->is_user;
_cairo_sub_font_init_key (sub_font, scaled_font);
sub_font->parent = parent;
sub_font->scaled_font = scaled_font;
sub_font->font_id = font_id;
sub_font->use_latin_subset = parent->use_latin_subset;
/* latin subsets of Type 3 and CID CFF fonts are not supported */
if (sub_font->is_user || sub_font->is_scaled ||
_cairo_cff_scaled_font_is_cid_cff (scaled_font) )
{
sub_font->use_latin_subset = FALSE;
}
if (sub_font->use_latin_subset)
sub_font->current_subset = 1; /* reserve subset 0 for latin glyphs */
else
sub_font->current_subset = 0;
sub_font->num_glyphs_in_current_subset = 0;
sub_font->num_glyphs_in_latin_subset = 0;
sub_font->max_glyphs_per_subset = max_glyphs_per_subset;
for (i = 0; i < 256; i++)
sub_font->latin_char_map[i] = FALSE;
sub_font->sub_font_glyphs = _cairo_hash_table_create (NULL);
if (unlikely (sub_font->sub_font_glyphs == NULL)) {
free (sub_font);
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
}
sub_font->next = NULL;
*sub_font_out = sub_font;
return CAIRO_STATUS_SUCCESS;
}
static cairo_status_t
_cairo_sub_font_create (cairo_scaled_font_subsets_t *parent,
cairo_scaled_font_t *scaled_font,
unsigned int font_id,
int max_glyphs_per_subset,
cairo_bool_t is_scaled,
cairo_bool_t is_composite,
cairo_sub_font_t **sub_font_out)
{
cairo_sub_font_t *sub_font;
cairo_status_t status;
cairo_scaled_font_subsets_glyph_t subset_glyph;
sub_font = malloc (sizeof (cairo_sub_font_t));
if (unlikely (sub_font == NULL))
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
sub_font->is_scaled = is_scaled;
sub_font->is_composite = is_composite;
sub_font->is_user = _cairo_font_face_is_user (scaled_font->font_face);
_cairo_sub_font_init_key (sub_font, scaled_font);
sub_font->parent = parent;
sub_font->scaled_font = scaled_font;
sub_font->font_id = font_id;
sub_font->current_subset = 0;
sub_font->num_glyphs_in_current_subset = 0;
sub_font->max_glyphs_per_subset = max_glyphs_per_subset;
sub_font->sub_font_glyphs = _cairo_hash_table_create (_cairo_sub_font_glyphs_equal);
if (unlikely (sub_font->sub_font_glyphs == NULL)) {
free (sub_font);
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
}
sub_font->next = NULL;
/* Reserve first glyph in subset for the .notdef glyph except for
* Type 3 fonts */
if (! is_scaled) {
status = _cairo_sub_font_map_glyph (sub_font, 0, NULL, -1, &subset_glyph);
if (unlikely (status)) {
_cairo_hash_table_destroy (sub_font->sub_font_glyphs);
free (sub_font);
return status;
}
}
*sub_font_out = sub_font;
return CAIRO_STATUS_SUCCESS;
}
static cairo_sub_font_t *
_cairo_sub_font_create (cairo_scaled_font_subsets_t *parent,
cairo_scaled_font_t *scaled_font,
unsigned int font_id,
int max_glyphs_per_subset,
cairo_bool_t is_scaled,
cairo_bool_t is_composite)
{
cairo_sub_font_t *sub_font;
sub_font = malloc (sizeof (cairo_sub_font_t));
if (sub_font == NULL)
return NULL;
sub_font->is_scaled = is_scaled;
sub_font->is_composite = is_composite;
_cairo_sub_font_init_key (sub_font, scaled_font);
sub_font->parent = parent;
sub_font->scaled_font = scaled_font;
sub_font->font_id = font_id;
sub_font->current_subset = 0;
sub_font->num_glyphs_in_current_subset = 0;
sub_font->max_glyphs_per_subset = max_glyphs_per_subset;
sub_font->sub_font_glyphs = _cairo_hash_table_create (_cairo_sub_font_glyphs_equal);
if (! sub_font->sub_font_glyphs) {
free (sub_font);
return NULL;
}
if (parent->type != CAIRO_SUBSETS_SCALED) {
/* Reserve first glyph in subset for the .notdef glyph */
sub_font->num_glyphs_in_current_subset++;
}
return sub_font;
}
cairo_private cairo_status_t
_cairo_scaled_font_subsets_map_glyph (cairo_scaled_font_subsets_t *subsets,
cairo_scaled_font_t *scaled_font,
unsigned long scaled_font_glyph_index,
cairo_scaled_font_subsets_glyph_t *subset_glyph)
{
cairo_sub_font_t key, *sub_font;
cairo_scaled_glyph_t *scaled_glyph;
cairo_font_face_t *font_face;
cairo_matrix_t identity;
cairo_font_options_t font_options;
cairo_scaled_font_t *unscaled_font;
cairo_status_t status;
int max_glyphs;
cairo_bool_t type1_font;
/* Lookup glyph in unscaled subsets */
if (subsets->type != CAIRO_SUBSETS_SCALED) {
key.is_scaled = FALSE;
_cairo_sub_font_init_key (&key, scaled_font);
if (_cairo_hash_table_lookup (subsets->unscaled_sub_fonts, &key.base,
(cairo_hash_entry_t **) &sub_font))
{
status = _cairo_sub_font_lookup_glyph (sub_font,
scaled_font_glyph_index,
subset_glyph);
if (status == CAIRO_STATUS_SUCCESS)
return CAIRO_STATUS_SUCCESS;
}
}
/* Lookup glyph in scaled subsets */
key.is_scaled = TRUE;
_cairo_sub_font_init_key (&key, scaled_font);
if (_cairo_hash_table_lookup (subsets->scaled_sub_fonts, &key.base,
(cairo_hash_entry_t **) &sub_font))
{
status = _cairo_sub_font_lookup_glyph (sub_font,
scaled_font_glyph_index,
subset_glyph);
if (status == CAIRO_STATUS_SUCCESS)
return CAIRO_STATUS_SUCCESS;
}
/* Glyph not found. Determine whether the glyph is outline or
* bitmap and add to the appropriate subset */
status = _cairo_scaled_glyph_lookup (scaled_font,
scaled_font_glyph_index,
CAIRO_SCALED_GLYPH_INFO_PATH,
&scaled_glyph);
if (status && status != CAIRO_INT_STATUS_UNSUPPORTED)
return status;
if (status == 0 && subsets->type != CAIRO_SUBSETS_SCALED) {
/* Path available. Add to unscaled subset. */
key.is_scaled = FALSE;
_cairo_sub_font_init_key (&key, scaled_font);
if (! _cairo_hash_table_lookup (subsets->unscaled_sub_fonts, &key.base,
(cairo_hash_entry_t **) &sub_font))
{
font_face = cairo_scaled_font_get_font_face (scaled_font);
cairo_matrix_init_identity (&identity);
_cairo_font_options_init_default (&font_options);
cairo_font_options_set_hint_style (&font_options, CAIRO_HINT_STYLE_NONE);
cairo_font_options_set_hint_metrics (&font_options, CAIRO_HINT_METRICS_OFF);
unscaled_font = cairo_scaled_font_create (font_face,
&identity,
&identity,
&font_options);
if (unscaled_font->status)
return unscaled_font->status;
subset_glyph->is_scaled = FALSE;
type1_font = FALSE;
#if CAIRO_HAS_FT_FONT
type1_font = _cairo_type1_scaled_font_is_type1 (unscaled_font);
#endif
if (subsets->type == CAIRO_SUBSETS_COMPOSITE && !type1_font) {
max_glyphs = MAX_GLYPHS_PER_COMPOSITE_FONT;
subset_glyph->is_composite = TRUE;
} else {
max_glyphs = MAX_GLYPHS_PER_SIMPLE_FONT;
subset_glyph->is_composite = FALSE;
}
sub_font = _cairo_sub_font_create (subsets,
unscaled_font,
subsets->num_sub_fonts++,
max_glyphs,
subset_glyph->is_scaled,
subset_glyph->is_composite);
if (sub_font == NULL) {
cairo_scaled_font_destroy (unscaled_font);
return CAIRO_STATUS_NO_MEMORY;
}
status = _cairo_hash_table_insert (subsets->unscaled_sub_fonts,
&sub_font->base);
if (status) {
_cairo_sub_font_destroy (sub_font);
return status;
}
}
} else {
/* No path available. Add to scaled subset. */
key.is_scaled = TRUE;
_cairo_sub_font_init_key (&key, scaled_font);
if (! _cairo_hash_table_lookup (subsets->scaled_sub_fonts, &key.base,
(cairo_hash_entry_t **) &sub_font))
{
subset_glyph->is_scaled = TRUE;
subset_glyph->is_composite = FALSE;
if (subsets->type == CAIRO_SUBSETS_SCALED)
max_glyphs = INT_MAX;
else
max_glyphs = MAX_GLYPHS_PER_SIMPLE_FONT;
sub_font = _cairo_sub_font_create (subsets,
cairo_scaled_font_reference (scaled_font),
subsets->num_sub_fonts++,
max_glyphs,
subset_glyph->is_scaled,
subset_glyph->is_composite);
if (sub_font == NULL) {
cairo_scaled_font_destroy (scaled_font);
return CAIRO_STATUS_NO_MEMORY;
}
status = _cairo_hash_table_insert (subsets->scaled_sub_fonts,
&sub_font->base);
if (status) {
_cairo_sub_font_destroy (sub_font);
return status;
}
}
}
return _cairo_sub_font_map_glyph (sub_font,
scaled_font_glyph_index,
subset_glyph);
}
