241 lines
8.2 KiB
C++
241 lines
8.2 KiB
C++
/*
|
|
* 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.
|
|
*/
|
|
|
|
typedef struct hb_subset_input_t 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.
|
|
*/
|
|
|
|
typedef struct hb_subset_plan_t 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.
|
|
*
|
|
* List of boolean properties that can be configured on the subset input.
|
|
*
|
|
* Since: 2.9.0
|
|
**/
|
|
typedef enum { /*< flags >*/
|
|
HB_SUBSET_FLAGS_DEFAULT = 0x00000000u,
|
|
HB_SUBSET_FLAGS_NO_HINTING = 0x00000001u,
|
|
HB_SUBSET_FLAGS_RETAIN_GIDS = 0x00000002u,
|
|
HB_SUBSET_FLAGS_DESUBROUTINIZE = 0x00000004u,
|
|
HB_SUBSET_FLAGS_NAME_LEGACY = 0x00000008u,
|
|
HB_SUBSET_FLAGS_SET_OVERLAPS_FLAG = 0x00000010u,
|
|
HB_SUBSET_FLAGS_PASSTHROUGH_UNRECOGNIZED = 0x00000020u,
|
|
HB_SUBSET_FLAGS_NOTDEF_OUTLINE = 0x00000040u,
|
|
HB_SUBSET_FLAGS_GLYPH_NAMES = 0x00000080u,
|
|
HB_SUBSET_FLAGS_NO_PRUNE_UNICODE_RANGES = 0x00000100u,
|
|
HB_SUBSET_FLAGS_NO_LAYOUT_CLOSURE = 0x00000200u,
|
|
} 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
|
|
**/
|
|
typedef enum {
|
|
HB_SUBSET_SETS_GLYPH_INDEX = 0,
|
|
HB_SUBSET_SETS_UNICODE,
|
|
HB_SUBSET_SETS_NO_SUBSET_TABLE_TAG,
|
|
HB_SUBSET_SETS_DROP_TABLE_TAG,
|
|
HB_SUBSET_SETS_NAME_ID,
|
|
HB_SUBSET_SETS_NAME_LANG_ID,
|
|
HB_SUBSET_SETS_LAYOUT_FEATURE_TAG,
|
|
HB_SUBSET_SETS_LAYOUT_SCRIPT_TAG,
|
|
} 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_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);
|
|
|
|
#ifdef HB_EXPERIMENTAL_API
|
|
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);
|
|
|
|
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 */
|