2 * Copyright © 2018 Google, Inc.
4 * This is part of HarfBuzz, a text shaping library.
6 * Permission is hereby granted, without written agreement and without
7 * license or royalty fees, to use, copy, modify, and distribute this
8 * software and its documentation for any purpose, provided that the
9 * above copyright notice and the following two paragraphs appear in
10 * all copies of this software.
12 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
13 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
14 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
15 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
18 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
19 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
20 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
21 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
22 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
24 * Google Author(s): Garret Rieger, Roderick Sheeter
27 #ifndef HB_SUBSET_PLAN_HH
28 #define HB_SUBSET_PLAN_HH
30 #include "hb-private.hh"
32 #include "hb-subset.h"
33 #include "hb-subset-private.hh"
35 #include "hb-object-private.hh"
36 #include "hb-map-private.hh"
38 struct hb_subset_plan_t
40 hb_object_header_t header;
44 hb_bool_t drop_ot_layout;
46 // For each cp that we'd like to retain maps to the corresponding gid.
49 // This list contains the complete set of glyphs to retain and may contain
50 // more glyphs then the lists above.
51 hb_vector_t<hb_codepoint_t> glyphs;
53 hb_map_t *codepoint_to_glyph;
56 // Plan is only good for a specific source/dest so keep them with it
61 new_gid_for_codepoint (hb_codepoint_t codepoint,
62 hb_codepoint_t *new_gid) const
64 hb_codepoint_t old_gid = codepoint_to_glyph->get (codepoint);
65 if (old_gid == HB_MAP_VALUE_INVALID)
68 return new_gid_for_old_gid (old_gid, new_gid);
72 new_gid_for_old_gid (hb_codepoint_t old_gid,
73 hb_codepoint_t *new_gid) const
75 hb_codepoint_t gid = glyph_map->get (old_gid);
76 if (gid == HB_MAP_VALUE_INVALID)
84 add_table (hb_tag_t tag,
87 hb_blob_t *source_blob = source->reference_table (tag);
88 DEBUG_MSG(SUBSET, nullptr, "add table %c%c%c%c, dest %d bytes, source %d bytes",
90 hb_blob_get_length (contents),
91 hb_blob_get_length (source_blob));
92 hb_blob_destroy (source_blob);
93 return hb_subset_face_add_table(dest, tag, contents);
97 typedef struct hb_subset_plan_t hb_subset_plan_t;
99 HB_INTERNAL hb_subset_plan_t *
100 hb_subset_plan_create (hb_face_t *face,
101 hb_subset_profile_t *profile,
102 hb_subset_input_t *input);
105 hb_subset_plan_destroy (hb_subset_plan_t *plan);
107 #endif /* HB_SUBSET_PLAN_HH */