kc3-lang/harfbuzz/src/hb-ot-shape-normalize-private.hh

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• Hash : b85800f9
  Author :
  Date : 2012-08-31T18:12:01
  

  [Indic] Implement dotted-circle insertion for broken clusters
  
  No panic, we reeally insert dotted circle when it's absolutely broken.
  
  Fixes most of the dotted-circle cases against Uniscribe. (for Devanagari
  fixes 80% of them, for Khmer 70%; the rest look like Uniscribe being
  really bogus...)
  
  I had to make a decision.  Apparently Uniscribe adds one dotted circle
  to each broken character.  I tried that, but that goes wrong easily with
  split matras.  So I made it add only one dotted circle to an entire
  broken syllable tail.  As in: "if there was a dotted circle here, this
  would have formed a correct cluster."  That works better for split
  stuff, and I like it more.
  

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• src/hb-ot-shape-normalize-private.hh

• /*
   * Copyright © 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
   */
  
  #ifndef HB_OT_SHAPE_NORMALIZE_PRIVATE_HH
  #define HB_OT_SHAPE_NORMALIZE_PRIVATE_HH
  
  #include "hb-private.hh"
  
  #include "hb-font.h"
  #include "hb-buffer.h"
  
  /* buffer var allocations, used during the normalization process */
  #define glyph_index()	var1.u32
  
  enum hb_ot_shape_normalization_mode_t {
    HB_OT_SHAPE_NORMALIZATION_MODE_DECOMPOSED,
    HB_OT_SHAPE_NORMALIZATION_MODE_COMPOSED_DIACRITICS, /* never composes base-to-base */
    HB_OT_SHAPE_NORMALIZATION_MODE_COMPOSED_DIACRITICS_NO_SHORT_CIRCUIT, /* always fully decomposes and then recompose back */
    HB_OT_SHAPE_NORMALIZATION_MODE_COMPOSED_FULL, /* including base-to-base composition */
  
    HB_OT_SHAPE_NORMALIZATION_MODE_DEFAULT = HB_OT_SHAPE_NORMALIZATION_MODE_COMPOSED_DIACRITICS
  };
  
  HB_INTERNAL void _hb_ot_shape_normalize (hb_font_t *font,
  					 hb_buffer_t *buffer,
  					 hb_ot_shape_normalization_mode_t mode);
  
  #endif /* HB_OT_SHAPE_NORMALIZE_PRIVATE_HH */
  

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