kc3-lang/harfbuzz/src/hb-face-private.hh

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• Hash : c0c2dbc8
  Author :
  Date : 2017-10-11T12:23:35
  

  Remove dirty tracking
  
  Turns out I don't need this to resolve CoreText optical sizing
  issue after all.
  
  https://github.com/behdad/harfbuzz/issues/360
  

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• src/hb-face-private.hh

• /*
   * Copyright © 2009  Red Hat, Inc.
   * Copyright © 2011  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.
   *
   * Red Hat Author(s): Behdad Esfahbod
   * Google Author(s): Behdad Esfahbod
   */
  
  #ifndef HB_FACE_PRIVATE_HH
  #define HB_FACE_PRIVATE_HH
  
  #include "hb-private.hh"
  
  #include "hb-object-private.hh"
  #include "hb-shaper-private.hh"
  #include "hb-shape-plan-private.hh"
  
  
  /*
   * hb_face_t
   */
  
  struct hb_face_t {
    hb_object_header_t header;
    ASSERT_POD ();
  
    hb_bool_t immutable;
  
    hb_reference_table_func_t  reference_table_func;
    void                      *user_data;
    hb_destroy_func_t          destroy;
  
    unsigned int index;			/* Face index in a collection, zero-based. */
    mutable unsigned int upem;		/* Units-per-EM. */
    mutable unsigned int num_glyphs;	/* Number of glyphs. */
  
    struct hb_shaper_data_t shaper_data;	/* Various shaper data. */
  
    /* Various non-shaping data. */
    /* ... */
  
    /* Cache */
    struct plan_node_t {
      hb_shape_plan_t *shape_plan;
      plan_node_t *next;
    } *shape_plans;
  
  
    inline hb_blob_t *reference_table (hb_tag_t tag) const
    {
      hb_blob_t *blob;
  
      if (unlikely (!reference_table_func))
        return hb_blob_get_empty ();
  
      blob = reference_table_func (/*XXX*/const_cast<hb_face_t *> (this), tag, user_data);
      if (unlikely (!blob))
        return hb_blob_get_empty ();
  
      return blob;
    }
  
    inline HB_PURE_FUNC unsigned int get_upem (void) const
    {
      if (unlikely (!upem))
        load_upem ();
      return upem;
    }
  
    inline unsigned int get_num_glyphs (void) const
    {
      if (unlikely (num_glyphs == (unsigned int) -1))
        load_num_glyphs ();
      return num_glyphs;
    }
  
    private:
    HB_INTERNAL void load_upem (void) const;
    HB_INTERNAL void load_num_glyphs (void) const;
  };
  
  extern HB_INTERNAL const hb_face_t _hb_face_nil;
  
  #define HB_SHAPER_DATA_CREATE_FUNC_EXTRA_ARGS
  #define HB_SHAPER_IMPLEMENT(shaper) HB_SHAPER_DATA_PROTOTYPE(shaper, face);
  #include "hb-shaper-list.hh"
  #undef HB_SHAPER_IMPLEMENT
  #undef HB_SHAPER_DATA_CREATE_FUNC_EXTRA_ARGS
  
  
  #endif /* HB_FACE_PRIVATE_HH */
  

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