91 lines
2.7 KiB
C++
91 lines
2.7 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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#include "hb-subset-plan.hh"
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#include "hb-subset-private.hh"
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// TODO(Q1) map from old:new gid
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hb_set_t *
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glyph_ids_to_retain (hb_subset_face_t *face,
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hb_set_t *codepoints)
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{
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hb_codepoint_t cp = -1;
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hb_set_t *gids = hb_set_create();
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while (hb_set_next(codepoints, &cp)) {
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hb_codepoint_t gid;
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if (face->cmap.get_nominal_glyph(cp, &gid)) {
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// TODO(Q1) a nice way to turn on/off logs
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fprintf(stderr, "gid for U+%04X is %d\n", cp, gid);
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hb_set_add(gids, cp);
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} else {
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fprintf(stderr, "Unable to resolve gid for U+%04X\n", cp);
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}
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}
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return gids;
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}
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/**
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* hb_subset_plan_create:
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* Computes a plan for subsetting the supplied face according
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* to a provide profile and input. The plan describes
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* which tables and glyphs should be retained.
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*
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* Return value: New subset plan.
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*
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* Since: 1.7.5
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**/
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hb_subset_plan_t *
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hb_subset_plan_create (hb_subset_face_t *face,
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hb_subset_profile_t *profile,
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hb_subset_input_t *input)
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{
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hb_subset_plan_t *plan = hb_object_create<hb_subset_plan_t> ();
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plan->glyphs_to_retain = glyph_ids_to_retain (face, input->codepoints);
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return plan;
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}
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hb_subset_plan_t *
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hb_subset_plan_get_empty ()
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{
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hb_subset_plan_t *plan = hb_object_create<hb_subset_plan_t> ();
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plan->glyphs_to_retain = hb_set_get_empty();
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return plan;
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}
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/**
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* hb_subset_plan_destroy:
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*
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* Since: 1.7.5
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**/
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void
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hb_subset_plan_destroy (hb_subset_plan_t *plan)
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{
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if (!hb_object_destroy (plan)) return;
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hb_set_destroy (plan->glyphs_to_retain);
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free (plan);
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}
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