/* * Copyright © 2018 Google, Inc. * * This is part of HarfBuzz, a text shaping library. * * Permission is hereby granted, without written agreement and without * license or royalty fees, to use, copy, modify, and distribute this * software and its documentation for any purpose, provided that the * above copyright notice and the following two paragraphs appear in * all copies of this software. * * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH * DAMAGE. * * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. * * Google Author(s): Rod Sheeter */ #ifndef HB_SUBSET_H #define HB_SUBSET_H #include "hb.h" #include "hb-ot.h" HB_BEGIN_DECLS /** * hb_subset_input_t: * * Things that change based on the input. Characters to keep, etc. */ hb_subset_input_t; /** * hb_subset_plan_t: * * Contains information about how the subset operation will be executed. * Such as mappings from the old glyph ids to the new ones in the subset. */ hb_subset_plan_t; /** * hb_subset_flags_t: * @HB_SUBSET_FLAGS_DEFAULT: all flags at their default value of false. * @HB_SUBSET_FLAGS_NO_HINTING: If set hinting instructions will be dropped in * the produced subset. Otherwise hinting instructions will be retained. * @HB_SUBSET_FLAGS_RETAIN_GIDS: If set glyph indices will not be modified in * the produced subset. If glyphs are dropped their indices will be retained * as an empty glyph. * @HB_SUBSET_FLAGS_DESUBROUTINIZE: If set and subsetting a CFF font the * subsetter will attempt to remove subroutines from the CFF glyphs. * @HB_SUBSET_FLAGS_NAME_LEGACY: If set non-unicode name records will be * retained in the subset. * @HB_SUBSET_FLAGS_SET_OVERLAPS_FLAG: If set the subsetter will set the * OVERLAP_SIMPLE flag on each simple glyph. * @HB_SUBSET_FLAGS_PASSTHROUGH_UNRECOGNIZED: If set the subsetter will not * drop unrecognized tables and instead pass them through untouched. * @HB_SUBSET_FLAGS_NOTDEF_OUTLINE: If set the notdef glyph outline will be * retained in the final subset. * @HB_SUBSET_FLAGS_GLYPH_NAMES: If set the PS glyph names will be retained * in the final subset. * @HB_SUBSET_FLAGS_NO_PRUNE_UNICODE_RANGES: If set then the unicode ranges in * OS/2 will not be recalculated. * @HB_SUBSET_FLAGS_NO_LAYOUT_CLOSURE: If set don't perform glyph closure on layout * substitution rules (GSUB). Since: 7.2.0. * @HB_SUBSET_FLAGS_OPTIMIZE_IUP_DELTAS: If set perform IUP delta optimization on the * remaining gvar table's deltas. Since: 8.5.0 * @HB_SUBSET_FLAGS_IFTB_REQUIREMENTS: If set enforce requirements on the output subset * to allow it to be used with incremental font transfer IFTB patches. Primarily, * this forces all outline data to use long (32 bit) offsets. Since: EXPERIMENTAL * * List of boolean properties that can be configured on the subset input. * * Since: 2.9.0 **/ hb_subset_flags_t; /** * hb_subset_sets_t: * @HB_SUBSET_SETS_GLYPH_INDEX: the set of glyph indexes to retain in the subset. * @HB_SUBSET_SETS_UNICODE: the set of unicode codepoints to retain in the subset. * @HB_SUBSET_SETS_NO_SUBSET_TABLE_TAG: the set of table tags which specifies tables that should not be * subsetted. * @HB_SUBSET_SETS_DROP_TABLE_TAG: the set of table tags which specifies tables which will be dropped * in the subset. * @HB_SUBSET_SETS_NAME_ID: the set of name ids that will be retained. * @HB_SUBSET_SETS_NAME_LANG_ID: the set of name lang ids that will be retained. * @HB_SUBSET_SETS_LAYOUT_FEATURE_TAG: the set of layout feature tags that will be retained * in the subset. * @HB_SUBSET_SETS_LAYOUT_SCRIPT_TAG: the set of layout script tags that will be retained * in the subset. Defaults to all tags. Since: 5.0.0 * * List of sets that can be configured on the subset input. * * Since: 2.9.1 **/ hb_subset_sets_t; HB_EXTERN hb_subset_input_t * hb_subset_input_create_or_fail (void); HB_EXTERN hb_subset_input_t * hb_subset_input_reference (hb_subset_input_t *input); HB_EXTERN void hb_subset_input_destroy (hb_subset_input_t *input); HB_EXTERN hb_bool_t hb_subset_input_set_user_data (hb_subset_input_t *input, hb_user_data_key_t *key, void * data, hb_destroy_func_t destroy, hb_bool_t replace); HB_EXTERN void * hb_subset_input_get_user_data (const hb_subset_input_t *input, hb_user_data_key_t *key); HB_EXTERN void hb_subset_input_keep_everything (hb_subset_input_t *input); HB_EXTERN hb_set_t * hb_subset_input_unicode_set (hb_subset_input_t *input); HB_EXTERN hb_set_t * hb_subset_input_glyph_set (hb_subset_input_t *input); HB_EXTERN hb_set_t * hb_subset_input_set (hb_subset_input_t *input, hb_subset_sets_t set_type); HB_EXTERN hb_map_t* hb_subset_input_old_to_new_glyph_mapping (hb_subset_input_t *input); HB_EXTERN hb_subset_flags_t hb_subset_input_get_flags (hb_subset_input_t *input); HB_EXTERN void hb_subset_input_set_flags (hb_subset_input_t *input, unsigned value); HB_EXTERN hb_bool_t hb_subset_input_pin_all_axes_to_default (hb_subset_input_t *input, hb_face_t *face); HB_EXTERN hb_bool_t hb_subset_input_pin_axis_to_default (hb_subset_input_t *input, hb_face_t *face, hb_tag_t axis_tag); HB_EXTERN hb_bool_t hb_subset_input_pin_axis_location (hb_subset_input_t *input, hb_face_t *face, hb_tag_t axis_tag, float axis_value); HB_EXTERN hb_bool_t hb_subset_input_get_axis_range (hb_subset_input_t *input, hb_tag_t axis_tag, float *axis_min_value, float *axis_max_value, float *axis_def_value); HB_EXTERN hb_bool_t hb_subset_input_set_axis_range (hb_subset_input_t *input, hb_face_t *face, hb_tag_t axis_tag, float axis_min_value, float axis_max_value, float axis_def_value); #ifdef HB_EXPERIMENTAL_API HB_EXTERN hb_bool_t hb_subset_input_override_name_table (hb_subset_input_t *input, hb_ot_name_id_t name_id, unsigned platform_id, unsigned encoding_id, unsigned language_id, const char *name_str, int str_len); #endif HB_EXTERN hb_face_t * hb_subset_preprocess (hb_face_t *source); HB_EXTERN hb_face_t * hb_subset_or_fail (hb_face_t *source, const hb_subset_input_t *input); HB_EXTERN hb_face_t * hb_subset_plan_execute_or_fail (hb_subset_plan_t *plan); HB_EXTERN hb_subset_plan_t * hb_subset_plan_create_or_fail (hb_face_t *face, const hb_subset_input_t *input); HB_EXTERN void hb_subset_plan_destroy (hb_subset_plan_t *plan); HB_EXTERN hb_map_t * hb_subset_plan_old_to_new_glyph_mapping (const hb_subset_plan_t *plan); HB_EXTERN hb_map_t * hb_subset_plan_new_to_old_glyph_mapping (const hb_subset_plan_t *plan); HB_EXTERN hb_map_t * hb_subset_plan_unicode_to_old_glyph_mapping (const hb_subset_plan_t *plan); HB_EXTERN hb_subset_plan_t * hb_subset_plan_reference (hb_subset_plan_t *plan); HB_EXTERN hb_bool_t hb_subset_plan_set_user_data (hb_subset_plan_t *plan, hb_user_data_key_t *key, void *data, hb_destroy_func_t destroy, hb_bool_t replace); HB_EXTERN void * hb_subset_plan_get_user_data (const hb_subset_plan_t *plan, hb_user_data_key_t *key); HB_END_DECLS #endif /* HB_SUBSET_H */
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