103 lines
2.9 KiB
C++
103 lines
2.9 KiB
C++
/*
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* Copyright © 2018 Google, Inc.
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*
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* This is part of HarfBuzz, a text shaping library.
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*
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* Permission is hereby granted, without written agreement and without
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* license or royalty fees, to use, copy, modify, and distribute this
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* software and its documentation for any purpose, provided that the
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* above copyright notice and the following two paragraphs appear in
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* all copies of this software.
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*
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* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
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* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
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* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
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* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
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* DAMAGE.
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*
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* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
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* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
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* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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*
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* Google Author(s): Garret Rieger, Roderick Sheeter
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*/
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#ifndef HB_SUBSET_PLAN_HH
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#define HB_SUBSET_PLAN_HH
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#include "hb.hh"
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#include "hb-subset.h"
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#include "hb-subset-input.hh"
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#include "hb-map.hh"
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struct hb_subset_plan_t
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{
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hb_object_header_t header;
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bool drop_hints : 1;
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bool drop_layout : 1;
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bool desubroutinize : 1;
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// For each cp that we'd like to retain maps to the corresponding gid.
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hb_set_t *unicodes;
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hb_vector_t<hb_codepoint_t> glyphs;
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hb_set_t *glyphset;
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hb_map_t *codepoint_to_glyph;
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hb_map_t *glyph_map;
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// Plan is only good for a specific source/dest so keep them with it
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hb_face_t *source;
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hb_face_t *dest;
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bool new_gid_for_codepoint (hb_codepoint_t codepoint,
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hb_codepoint_t *new_gid) const
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{
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hb_codepoint_t old_gid = codepoint_to_glyph->get (codepoint);
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if (old_gid == HB_MAP_VALUE_INVALID)
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return false;
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return new_gid_for_old_gid (old_gid, new_gid);
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}
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bool new_gid_for_old_gid (hb_codepoint_t old_gid,
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hb_codepoint_t *new_gid) const
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{
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hb_codepoint_t gid = glyph_map->get (old_gid);
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if (gid == HB_MAP_VALUE_INVALID)
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return false;
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*new_gid = gid;
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return true;
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}
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bool
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add_table (hb_tag_t tag,
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hb_blob_t *contents)
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{
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hb_blob_t *source_blob = source->reference_table (tag);
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DEBUG_MSG(SUBSET, nullptr, "add table %c%c%c%c, dest %d bytes, source %d bytes",
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HB_UNTAG(tag),
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hb_blob_get_length (contents),
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hb_blob_get_length (source_blob));
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hb_blob_destroy (source_blob);
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return hb_face_builder_add_table (dest, tag, contents);
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}
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};
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typedef struct hb_subset_plan_t hb_subset_plan_t;
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HB_INTERNAL hb_subset_plan_t *
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hb_subset_plan_create (hb_face_t *face,
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hb_subset_input_t *input);
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HB_INTERNAL void
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hb_subset_plan_destroy (hb_subset_plan_t *plan);
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#endif /* HB_SUBSET_PLAN_HH */
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