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

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• Hash : ffe34784
  Author :
  Date : 2018-10-23T14:14:03
  

  [aat] Allow enabling/disabling features
  
  Only works at entire-buffer range, not sub-ranges.
  
  Test with:
  
  $ hb-shape Zapfino.dfont Zapfino
  [Z_a_p_f_i_n_o=0+2333]
  
  $ hb-shape Zapfino.dfont Zapfino --features=-dlig
  [Z=0+416|a=1@-21,0+264|p_f=2+433|i=4+181|n=5+261|o=6+250]
  
  $ hb-shape Zapfino.dfont Zapfino --features=+dlig
  [Z_a_p_f_i_n_o=0+2333]
  
  Fixes https://github.com/harfbuzz/harfbuzz/issues/1303
  

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• src/hb-ot-shape.hh

• /*
   * Copyright © 2010  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_HH
  #define HB_OT_SHAPE_HH
  
  #include "hb.hh"
  
  #include "hb-ot-map.hh"
  #include "hb-aat-map.hh"
  #include "hb-shape-plan.hh"
  
  
  
  struct hb_ot_shape_plan_t
  {
    hb_segment_properties_t props;
    const struct hb_ot_complex_shaper_t *shaper;
    hb_ot_map_t map;
    hb_aat_map_t aat_map;
    const void *data;
    hb_mask_t frac_mask, numr_mask, dnom_mask;
    hb_mask_t rtlm_mask;
    hb_mask_t kern_mask;
    hb_mask_t trak_mask;
  
    bool requested_kerning : 1;
    bool requested_tracking : 1;
    bool has_frac : 1;
    bool has_gpos_mark : 1;
    bool fallback_glyph_classes : 1;
    bool fallback_kerning : 1;
    bool fallback_mark_positioning : 1;
  
    bool apply_gpos : 1;
    bool apply_kerx : 1;
    bool apply_kern : 1;
    bool apply_morx : 1;
    bool apply_trak : 1;
  
  
    inline void collect_lookups (hb_tag_t table_tag, hb_set_t *lookups) const
    {
      unsigned int table_index;
      switch (table_tag) {
        case HB_OT_TAG_GSUB: table_index = 0; break;
        case HB_OT_TAG_GPOS: table_index = 1; break;
        default: return;
      }
      map.collect_lookups (table_index, lookups);
    }
    inline void substitute (hb_font_t *font, hb_buffer_t *buffer) const { map.substitute (this, font, buffer); }
    inline void position (hb_font_t *font, hb_buffer_t *buffer) const { map.position (this, font, buffer); }
  
    void init (void)
    {
      memset (this, 0, sizeof (*this));
      map.init ();
      aat_map.init ();
    }
    void fini (void) {
      map.fini ();
      aat_map.fini ();
    }
  };
  
  struct hb_ot_shape_planner_t
  {
    /* In the order that they are filled in. */
    hb_face_t *face;
    hb_segment_properties_t props;
    hb_ot_map_builder_t map;
    hb_aat_map_builder_t aat_map;
    bool apply_morx : 1;
    const struct hb_ot_complex_shaper_t *shaper;
  
    HB_INTERNAL hb_ot_shape_planner_t (const hb_shape_plan_t *master_plan);
  
    HB_INTERNAL void compile (hb_ot_shape_plan_t &plan,
  			    const int          *coords,
  			    unsigned int        num_coords);
  
    private:
    HB_DISALLOW_COPY_AND_ASSIGN (hb_ot_shape_planner_t);
  };
  
  
  #endif /* HB_OT_SHAPE_HH */
  

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