2 * Copyright © 2010 Google, Inc.
4 * This is part of HarfBuzz, a text shaping library.
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.
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
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.
24 * Google Author(s): Behdad Esfahbod
27 #ifndef HB_OT_SHAPE_HH
28 #define HB_OT_SHAPE_HH
32 #include "hb-ot-map.hh"
33 #include "hb-aat-map.hh"
36 struct hb_ot_shape_plan_key_t
38 unsigned int variations_index[2];
40 void init (hb_face_t *face,
44 for (unsigned int table_index = 0; table_index < 2; table_index++)
45 hb_ot_layout_table_find_feature_variations (face,
46 table_tags[table_index],
49 &variations_index[table_index]);
52 bool equal (const hb_ot_shape_plan_key_t *other)
54 return 0 == memcmp (this, other, sizeof (*this));
59 struct hb_shape_plan_key_t;
61 struct hb_ot_shape_plan_t
63 hb_segment_properties_t props;
64 const struct hb_ot_complex_shaper_t *shaper;
68 #ifndef HB_NO_OT_SHAPE_FRACTIONS
69 hb_mask_t frac_mask, numr_mask, dnom_mask;
71 static constexpr hb_mask_t frac_mask = 0;
72 static constexpr hb_mask_t numr_mask = 0;
73 static constexpr hb_mask_t dnom_mask = 0;
79 static constexpr hb_mask_t kern_mask = 0;
81 #ifndef HB_NO_AAT_SHAPE
84 static constexpr hb_mask_t trak_mask = 0;
88 bool requested_kerning : 1;
90 static constexpr bool requested_kerning = false;
92 #ifndef HB_NO_AAT_SHAPE
93 bool requested_tracking : 1;
95 static constexpr bool requested_tracking = false;
97 #ifndef HB_NO_OT_SHAPE_FRACTIONS
100 static constexpr bool has_frac = false;
103 bool has_gpos_mark : 1;
105 bool fallback_glyph_classes : 1;
106 bool fallback_mark_positioning : 1;
107 bool adjust_mark_positioning_when_zeroing : 1;
110 #ifndef HB_NO_OT_KERN
113 static constexpr bool apply_kern = false;
115 #ifndef HB_NO_AAT_SHAPE
120 static constexpr bool apply_kerx = false;
121 static constexpr bool apply_morx = false;
122 static constexpr bool apply_trak = false;
125 void collect_lookups (hb_tag_t table_tag, hb_set_t *lookups) const
127 unsigned int table_index;
129 case HB_OT_TAG_GSUB: table_index = 0; break;
130 case HB_OT_TAG_GPOS: table_index = 1; break;
133 map.collect_lookups (table_index, lookups);
136 HB_INTERNAL bool init0 (hb_face_t *face,
137 const hb_shape_plan_key_t *key);
138 HB_INTERNAL void fini ();
140 HB_INTERNAL void substitute (hb_font_t *font, hb_buffer_t *buffer) const;
141 HB_INTERNAL void position (hb_font_t *font, hb_buffer_t *buffer) const;
144 struct hb_shape_plan_t;
146 struct hb_ot_shape_planner_t
148 /* In the order that they are filled in. */
150 hb_segment_properties_t props;
151 hb_ot_map_builder_t map;
152 hb_aat_map_builder_t aat_map;
153 #ifndef HB_NO_AAT_SHAPE
156 static constexpr bool apply_morx = false;
158 bool script_zero_marks : 1;
159 bool script_fallback_mark_positioning : 1;
160 const struct hb_ot_complex_shaper_t *shaper;
162 HB_INTERNAL hb_ot_shape_planner_t (hb_face_t *face,
163 const hb_segment_properties_t *props);
165 HB_INTERNAL void compile (hb_ot_shape_plan_t &plan,
166 const hb_ot_shape_plan_key_t &key);
170 #endif /* HB_OT_SHAPE_HH */