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; 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; }
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); }
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; }
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_scaled_font_subsets_glyph_t tmp_subset_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; /* Reserve first glyph in subset for the .notdef glyph */ status = _cairo_sub_font_map_glyph (sub_font, 0, &tmp_subset_glyph); if (status) return status; } 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 (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_error (CAIRO_STATUS_NO_MEMORY); 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; } 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; return CAIRO_STATUS_SUCCESS; }