1/*
2 * Copyright © 2012  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_OT_SHAPE_NORMALIZE_PRIVATE_HH
28#define HB_OT_SHAPE_NORMALIZE_PRIVATE_HH
29
30#include "hb-private.hh"
31
32
33/* buffer var allocations, used during the normalization process */
34#define glyph_index()	var1.u32
35
36struct hb_ot_shape_plan_t;
37
38enum hb_ot_shape_normalization_mode_t {
39  HB_OT_SHAPE_NORMALIZATION_MODE_NONE,
40  HB_OT_SHAPE_NORMALIZATION_MODE_DECOMPOSED,
41  HB_OT_SHAPE_NORMALIZATION_MODE_COMPOSED_DIACRITICS, /* never composes base-to-base */
42  HB_OT_SHAPE_NORMALIZATION_MODE_COMPOSED_DIACRITICS_NO_SHORT_CIRCUIT, /* always fully decomposes and then recompose back */
43
44  HB_OT_SHAPE_NORMALIZATION_MODE_DEFAULT = HB_OT_SHAPE_NORMALIZATION_MODE_COMPOSED_DIACRITICS
45};
46
47HB_INTERNAL void _hb_ot_shape_normalize (const hb_ot_shape_plan_t *shaper,
48					 hb_buffer_t *buffer,
49					 hb_font_t *font);
50
51
52struct hb_ot_shape_normalize_context_t
53{
54  const hb_ot_shape_plan_t *plan;
55  hb_buffer_t *buffer;
56  hb_font_t *font;
57  hb_unicode_funcs_t *unicode;
58  bool (*decompose) (const hb_ot_shape_normalize_context_t *c,
59		     hb_codepoint_t  ab,
60		     hb_codepoint_t *a,
61		     hb_codepoint_t *b);
62  bool (*compose) (const hb_ot_shape_normalize_context_t *c,
63		   hb_codepoint_t  a,
64		   hb_codepoint_t  b,
65		   hb_codepoint_t *ab);
66};
67
68
69#endif /* HB_OT_SHAPE_NORMALIZE_PRIVATE_HH */
70