gfx/harfbuzz/src/hb-aat-layout.hh

   1 /*
   2  * Copyright © 2017  Google, Inc.
   3  *
   4  *  This is part of HarfBuzz, a text shaping library.
   5  *
   6  * Permission is hereby granted, without written agreement and without
   7  * license or royalty fees, to use, copy, modify, and distribute this
   8  * software and its documentation for any purpose, provided that the
   9  * above copyright notice and the following two paragraphs appear in
  10  * all copies of this software.
  11  *
  12  * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
  13  * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
  14  * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
  15  * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
  16  * DAMAGE.
  17  *
  18  * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
  19  * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
  20  * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
  21  * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
  22  * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
  23  *
  24  * Google Author(s): Behdad Esfahbod
  25  */
  26
  27 #ifndef HB_AAT_LAYOUT_HH
  28 #define HB_AAT_LAYOUT_HH
  29
  30 #include "hb.hh"
  31
  32 #include "hb-ot-shape.hh"
  33 #include "hb-aat-ltag-table.hh"
  34
  35 struct hb_aat_feature_mapping_t
  36 {
  37   hb_tag_t otFeatureTag;
  38   hb_aat_layout_feature_type_t aatFeatureType;
  39   hb_aat_layout_feature_selector_t selectorToEnable;
  40   hb_aat_layout_feature_selector_t selectorToDisable;
  41
  42   int cmp (hb_tag_t key) const
  43   { return key < otFeatureTag ? -1 : key > otFeatureTag ? 1 : 0; }
  44 };
  45
  46 HB_INTERNAL const hb_aat_feature_mapping_t *
  47 hb_aat_layout_find_feature_mapping (hb_tag_t tag);
  48
  49 HB_INTERNAL void
  50 hb_aat_layout_compile_map (const hb_aat_map_builder_t *mapper,
  51                            hb_aat_map_t *map);
  52
  53 HB_INTERNAL void
  54 hb_aat_layout_substitute (const hb_ot_shape_plan_t *plan,
  55                           hb_font_t *font,
  56                           hb_buffer_t *buffer,
  57                           const hb_feature_t *features,
  58                           unsigned num_features);
  59
  60 HB_INTERNAL void
  61 hb_aat_layout_zero_width_deleted_glyphs (hb_buffer_t *buffer);
  62
  63 HB_INTERNAL void
  64 hb_aat_layout_remove_deleted_glyphs (hb_buffer_t *buffer);
  65
  66 HB_INTERNAL void
  67 hb_aat_layout_position (const hb_ot_shape_plan_t *plan,
  68                         hb_font_t *font,
  69                         hb_buffer_t *buffer);
  70
  71 HB_INTERNAL void
  72 hb_aat_layout_track (const hb_ot_shape_plan_t *plan,
  73                      hb_font_t *font,
  74                      hb_buffer_t *buffer);
  75
  76
  77 #endif /* HB_AAT_LAYOUT_HH */