kc3-lang/harfbuzz/src/hb-ot-shape-complex-default.cc

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• Hash : f47cbade
  Author :
  Date : 2019-12-09T18:10:34
  

  [aat] Adjust fallback positioning logic
  
  Fixes https://github.com/harfbuzz/harfbuzz/issues/1528
  
  Wish could add a test...
  
  $ ./hb-view --font-file Thonburi.ttc --unicodes U+0E17,U+0E35,U+0E48,U+0E4A --shaper ot
  
                     ▃
  
           ▂▃▃▄▃▂▁▊        ▃  ▃       ▎
        ▗   ▅▆▆▅          ▌ ▆▆▅▆▙ ▌▗
       ▗                  ▙ ▂  ▎▗   ▟
       ▅▆▆▆▇▇▇▇▇▇▇▆▆▅▄     ▇▅▅▅ ▙▆▇
      ▁▁▂▁       ▁▁
           ▖                    ▖ ▂▂
    ▉   ▁        ▆▆        ▌   ▆  ▙▄ ▁▁
     ▙            ▉      ▃▖           ▟
        ▊         ▉      ▅▟           ▗▄
        ▊         ▉     ▗ ▏           ▇▆
        ▊    ▟    ▉      ▆             ▖
        ▊         ▉        ▌        ▂
        ▊   ▏     ▉           ▌ ▗   ▄▟
        ▊                        ▆
  

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• src/hb-ot-shape-complex-default.cc

• /*
   * Copyright © 2010,2012  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): Behdad Esfahbod
   */
  
  #include "hb.hh"
  
  #ifndef HB_NO_OT_SHAPE
  
  #include "hb-ot-shape-complex.hh"
  
  
  const hb_ot_complex_shaper_t _hb_ot_complex_shaper_default =
  {
    nullptr, /* collect_features */
    nullptr, /* override_features */
    nullptr, /* data_create */
    nullptr, /* data_destroy */
    nullptr, /* preprocess_text */
    nullptr, /* postprocess_glyphs */
    HB_OT_SHAPE_NORMALIZATION_MODE_DEFAULT,
    nullptr, /* decompose */
    nullptr, /* compose */
    nullptr, /* setup_masks */
    HB_TAG_NONE, /* gpos_tag */
    nullptr, /* reorder_marks */
    HB_OT_SHAPE_ZERO_WIDTH_MARKS_BY_GDEF_LATE,
    true, /* fallback_position */
  };
  
  /* Same as default but no mark advance zeroing / fallback positioning.
   * Dumbest shaper ever, basically. */
  const hb_ot_complex_shaper_t _hb_ot_complex_shaper_dumber =
  {
    nullptr, /* collect_features */
    nullptr, /* override_features */
    nullptr, /* data_create */
    nullptr, /* data_destroy */
    nullptr, /* preprocess_text */
    nullptr, /* postprocess_glyphs */
    HB_OT_SHAPE_NORMALIZATION_MODE_DEFAULT,
    nullptr, /* decompose */
    nullptr, /* compose */
    nullptr, /* setup_masks */
    HB_TAG_NONE, /* gpos_tag */
    nullptr, /* reorder_marks */
    HB_OT_SHAPE_ZERO_WIDTH_MARKS_NONE,
    false, /* fallback_position */
  };
  
  
  #endif
  

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