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
35struct 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 HB_INTERNAL static int cmp (const void *key_, const void *entry_)
43 {
44 hb_tag_t key = * (unsigned int *) key_;
45 const hb_aat_feature_mapping_t * entry = (const hb_aat_feature_mapping_t *) entry_;
46 return key < entry->otFeatureTag ? -1 :
47 key > entry->otFeatureTag ? 1 :
48 0;
49 }
50};
51
52HB_INTERNAL const hb_aat_feature_mapping_t *
53hb_aat_layout_find_feature_mapping (hb_tag_t tag);
54
55HB_INTERNAL void
56hb_aat_layout_compile_map (const hb_aat_map_builder_t *mapper,
57 hb_aat_map_t *map);
58
59HB_INTERNAL void
60hb_aat_layout_substitute (const hb_ot_shape_plan_t *plan,
61 hb_font_t *font,
62 hb_buffer_t *buffer);
63
64HB_INTERNAL void
65hb_aat_layout_zero_width_deleted_glyphs (hb_buffer_t *buffer);
66
67HB_INTERNAL void
68hb_aat_layout_remove_deleted_glyphs (hb_buffer_t *buffer);
69
70HB_INTERNAL void
71hb_aat_layout_position (const hb_ot_shape_plan_t *plan,
72 hb_font_t *font,
73 hb_buffer_t *buffer);
74
75HB_INTERNAL void
76hb_aat_layout_track (const hb_ot_shape_plan_t *plan,
77 hb_font_t *font,
78 hb_buffer_t *buffer);
79
80
81#endif /* HB_AAT_LAYOUT_HH */
82