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

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• Hash : c77ae408
  Author :
  Date : 2018-08-25T22:36:36
  

  Rename hb-*private.hh to hb-*.hh
  
  Sorry for the noise, downstream custom builders.  Please adjust.
  

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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-ot-layout.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;
    const void *data;
    hb_mask_t rtlm_mask, frac_mask, numr_mask, dnom_mask;
    hb_mask_t kern_mask;
    unsigned int has_frac : 1;
    unsigned int has_kern : 1;
    unsigned int has_mark : 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 ();
    }
    void fini (void) {
      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;
    const struct hb_ot_complex_shaper_t *shaper;
    hb_ot_map_builder_t map;
  
    hb_ot_shape_planner_t (const hb_shape_plan_t *master_plan) :
  			 face (master_plan->face_unsafe),
  			 props (master_plan->props),
  			 shaper (nullptr),
  			 map (face, &props) {}
  
    inline void compile (hb_ot_shape_plan_t &plan,
  		       const int          *coords,
  		       unsigned int        num_coords)
    {
      plan.props = props;
      plan.shaper = shaper;
      map.compile (plan.map, coords, num_coords);
  
      plan.rtlm_mask = plan.map.get_1_mask (HB_TAG ('r','t','l','m'));
      plan.frac_mask = plan.map.get_1_mask (HB_TAG ('f','r','a','c'));
      plan.numr_mask = plan.map.get_1_mask (HB_TAG ('n','u','m','r'));
      plan.dnom_mask = plan.map.get_1_mask (HB_TAG ('d','n','o','m'));
  
      plan.kern_mask = plan.map.get_mask (HB_DIRECTION_IS_HORIZONTAL (plan.props.direction) ?
  					HB_TAG ('k','e','r','n') : HB_TAG ('v','k','r','n'));
  
      plan.has_frac = plan.frac_mask || (plan.numr_mask && plan.dnom_mask);
      plan.has_kern = !!plan.kern_mask;
      plan.has_mark = !!plan.map.get_1_mask (HB_TAG ('m','a','r','k'));
    }
  
    private:
    HB_DISALLOW_COPY_AND_ASSIGN (hb_ot_shape_planner_t);
  };
  
  
  #endif /* HB_OT_SHAPE_HH */
  

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