kc3-lang/harfbuzz/src/hb-subset-input.hh

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• Hash : 463ae07e
  Author :
  Date : 2022-11-23T18:41:23
  

  [subset] In the preprocess subset call always use long loca.
  
  Long loca is needed so that we can store the trimmed glyph bytes to allow us to safely skip trimming in the later subset.
  

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• src/hb-subset-input.hh

• /*
   * 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): Garret Rieger, Roderick Sheeter
   */
  
  #ifndef HB_SUBSET_INPUT_HH
  #define HB_SUBSET_INPUT_HH
  
  
  #include "hb.hh"
  
  #include "hb-subset.h"
  #include "hb-map.hh"
  #include "hb-set.hh"
  
  #include "hb-font.hh"
  
  HB_MARK_AS_FLAG_T (hb_subset_flags_t);
  
  struct hb_subset_input_t
  {
    hb_object_header_t header;
  
    struct sets_t {
      hb_set_t *glyphs;
      hb_set_t *unicodes;
      hb_set_t *no_subset_tables;
      hb_set_t *drop_tables;
      hb_set_t *name_ids;
      hb_set_t *name_languages;
      hb_set_t *layout_features;
      hb_set_t *layout_scripts;
    };
  
    union {
      sets_t sets;
      hb_set_t* set_ptrs[sizeof (sets_t) / sizeof (hb_set_t*)];
    };
  
    unsigned flags;
    bool attach_accelerator_data = false;
  
    // If set loca format will always be the long version.
    bool force_long_loca = false;
  
    hb_hashmap_t<hb_tag_t, float> *axes_location;
  #ifdef HB_EXPERIMENTAL_API
    hb_hashmap_t<unsigned, hb_bytes_t> *name_table_overrides;
  #endif
  
    inline unsigned num_sets () const
    {
      return sizeof (set_ptrs) / sizeof (hb_set_t*);
    }
  
    inline hb_array_t<hb_set_t*> sets_iter ()
    {
      return hb_array_t<hb_set_t*> (set_ptrs, num_sets ());
    }
  
    bool in_error () const
    {
      for (unsigned i = 0; i < num_sets (); i++)
      {
        if (unlikely (set_ptrs[i]->in_error ()))
          return true;
      }
  
      return axes_location->in_error ()
  #ifdef HB_EXPERIMENTAL_API
  	|| name_table_overrides->in_error ()
  #endif
  	;
    }
  };
  
  
  #endif /* HB_SUBSET_INPUT_HH */
  

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