hb-ot-shape-private.hh revision 6bd9b479b8b2befbb0847282e93beade197c8038 
1/*
2 * Copyright © 2010  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_PRIVATE_HH
28#define HB_OT_SHAPE_PRIVATE_HH
29
30#include "hb-private.hh"
31
32#include "hb-ot-map-private.hh"
33#include "hb-ot-shape-complex-private.hh"
34#include "hb-ot-shape-normalize-private.hh"
35
36
37struct hb_ot_shape_plan_t
38{
39  friend struct hb_ot_shape_planner_t;
40
41  hb_ot_map_t map;
42  hb_ot_complex_shaper_t shaper;
43
44  hb_ot_shape_plan_t (void) : map () {}
45  ~hb_ot_shape_plan_t (void) { map.finish (); }
46
47  private:
48  NO_COPY (hb_ot_shape_plan_t);
49};
50
51struct hb_ot_shape_planner_t
52{
53  hb_ot_map_builder_t map;
54  hb_ot_complex_shaper_t shaper;
55
56  hb_ot_shape_planner_t (void) : map () {}
57  ~hb_ot_shape_planner_t (void) { map.finish (); }
58
59  inline void compile (hb_face_t *face,
60		       const hb_segment_properties_t *props,
61		       struct hb_ot_shape_plan_t &plan)
62  {
63    plan.shaper = shaper;
64    map.compile (face, props, plan.map);
65  }
66
67  private:
68  NO_COPY (hb_ot_shape_planner_t);
69};
70
71
72struct hb_ot_shape_context_t
73{
74  /* Input to hb_ot_shape_execute() */
75  hb_ot_shape_plan_t *plan;
76  hb_font_t *font;
77  hb_face_t *face;
78  hb_buffer_t  *buffer;
79  const hb_feature_t *user_features;
80  unsigned int        num_user_features;
81
82  /* Transient stuff */
83  hb_direction_t target_direction;
84  hb_bool_t applied_position_complex;
85};
86
87
88static inline void
89hb_glyph_info_set_unicode_props (hb_glyph_info_t *info, hb_unicode_funcs_t *unicode)
90{
91  info->general_category() = hb_unicode_general_category (unicode, info->codepoint);
92  info->combining_class() = _hb_unicode_modified_combining_class (unicode, info->codepoint);
93}
94
95HB_INTERNAL void _hb_set_unicode_props (hb_buffer_t *buffer);
96
97HB_INTERNAL hb_bool_t
98_hb_ot_shape (hb_font_t          *font,
99	      hb_buffer_t        *buffer,
100	      const hb_feature_t *features,
101	      unsigned int        num_features);
102
103#include "hb-ot-shape-complex-private.hh"
104
105#endif /* HB_OT_SHAPE_PRIVATE_HH */
106