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-layout-private.hh"
34
35
36
37struct hb_ot_shape_plan_t
38{
39  hb_segment_properties_t props;
40  const struct hb_ot_complex_shaper_t *shaper;
41  hb_ot_map_t map;
42  const void *data;
43
44  inline void collect_lookups (hb_tag_t table_tag, hb_set_t *lookups) const
45  {
46    unsigned int table_index;
47    switch (table_tag) {
48      case HB_OT_TAG_GSUB: table_index = 0; break;
49      case HB_OT_TAG_GPOS: table_index = 1; break;
50      default: return;
51    }
52    map.collect_lookups (table_index, lookups);
53  }
54  inline void substitute (hb_font_t *font, hb_buffer_t *buffer) const { map.substitute (this, font, buffer); }
55  inline void position (hb_font_t *font, hb_buffer_t *buffer) const { map.position (this, font, buffer); }
56
57  void finish (void) { map.finish (); }
58};
59
60struct hb_ot_shape_planner_t
61{
62  /* In the order that they are filled in. */
63  hb_face_t *face;
64  hb_segment_properties_t props;
65  const struct hb_ot_complex_shaper_t *shaper;
66  hb_ot_map_builder_t map;
67
68  hb_ot_shape_planner_t (const hb_shape_plan_t *master_plan) :
69			 face (master_plan->face),
70			 props (master_plan->props),
71			 shaper (NULL),
72			 map (face, &props) {}
73  ~hb_ot_shape_planner_t (void) { map.finish (); }
74
75  inline void compile (hb_ot_shape_plan_t &plan)
76  {
77    plan.props = props;
78    plan.shaper = shaper;
79    map.compile (plan.map);
80  }
81
82  private:
83  NO_COPY (hb_ot_shape_planner_t);
84};
85
86
87#endif /* HB_OT_SHAPE_PRIVATE_HH */
88