1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
|
/*
* Copyright © 2010 Google, Inc.
*
* This is part of HarfBuzz, a text shaping library.
*
* Permission is hereby granted, without written agreement and without
* license or royalty fees, to use, copy, modify, and distribute this
* software and its documentation for any purpose, provided that the
* above copyright notice and the following two paragraphs appear in
* all copies of this software.
*
* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*
* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
*
* Google Author(s): Behdad Esfahbod
*/
#ifndef HB_OT_SHAPE_HH
#define HB_OT_SHAPE_HH
#include "hb.hh"
#include "hb-ot-map.hh"
#include "hb-aat-map.hh"
struct hb_ot_shape_plan_key_t
{
unsigned int variations_index[2];
void init (hb_face_t *face,
const int *coords,
unsigned num_coords)
{
for (unsigned int table_index = 0; table_index < 2; table_index++)
hb_ot_layout_table_find_feature_variations (face,
table_tags[table_index],
coords,
num_coords,
&variations_index[table_index]);
}
bool equal (const hb_ot_shape_plan_key_t *other)
{
return 0 == memcmp (this, other, sizeof (*this));
}
};
struct hb_shape_plan_key_t;
struct hb_ot_shape_plan_t
{
~hb_ot_shape_plan_t () { fini (); }
hb_segment_properties_t props;
const struct hb_ot_shaper_t *shaper;
hb_ot_map_t map;
hb_aat_map_t aat_map;
const void *data;
#ifndef HB_NO_OT_SHAPE_FRACTIONS
hb_mask_t frac_mask, numr_mask, dnom_mask;
#else
static constexpr hb_mask_t frac_mask = 0;
static constexpr hb_mask_t numr_mask = 0;
static constexpr hb_mask_t dnom_mask = 0;
#endif
hb_mask_t rtlm_mask;
#ifndef HB_NO_OT_KERN
hb_mask_t kern_mask;
#else
static constexpr hb_mask_t kern_mask = 0;
#endif
#ifndef HB_NO_AAT_SHAPE
hb_mask_t trak_mask;
#else
static constexpr hb_mask_t trak_mask = 0;
#endif
#ifndef HB_NO_OT_KERN
bool requested_kerning : 1;
#else
static constexpr bool requested_kerning = false;
#endif
#ifndef HB_NO_AAT_SHAPE
bool requested_tracking : 1;
#else
static constexpr bool requested_tracking = false;
#endif
#ifndef HB_NO_OT_SHAPE_FRACTIONS
bool has_frac : 1;
#else
static constexpr bool has_frac = false;
#endif
bool has_vert : 1;
bool has_gpos_mark : 1;
bool zero_marks : 1;
bool fallback_glyph_classes : 1;
bool fallback_mark_positioning : 1;
bool adjust_mark_positioning_when_zeroing : 1;
bool apply_gpos : 1;
#ifndef HB_NO_OT_KERN
bool apply_kern : 1;
#else
static constexpr bool apply_kern = false;
#endif
bool apply_fallback_kern : 1;
#ifndef HB_NO_AAT_SHAPE
bool apply_kerx : 1;
bool apply_morx : 1;
bool apply_trak : 1;
#else
static constexpr bool apply_kerx = false;
static constexpr bool apply_morx = false;
static constexpr bool apply_trak = false;
#endif
void collect_lookups (hb_tag_t table_tag, hb_set_t *lookups) const
{
unsigned int table_index;
switch (table_tag) {
case HB_OT_TAG_GSUB: table_index = 0; break;
case HB_OT_TAG_GPOS: table_index = 1; break;
default: return;
}
map.collect_lookups (table_index, lookups);
}
HB_INTERNAL bool init0 (hb_face_t *face,
const hb_shape_plan_key_t *key);
HB_INTERNAL void fini ();
HB_INTERNAL void substitute (hb_font_t *font, hb_buffer_t *buffer) const;
HB_INTERNAL void position (hb_font_t *font, hb_buffer_t *buffer) const;
};
struct hb_shape_plan_t;
struct hb_ot_shape_planner_t
{
/* In the order that they are filled in. */
hb_face_t *face;
hb_segment_properties_t props;
hb_ot_map_builder_t map;
hb_aat_map_builder_t aat_map;
#ifndef HB_NO_AAT_SHAPE
bool apply_morx : 1;
#else
static constexpr bool apply_morx = false;
#endif
bool script_zero_marks : 1;
bool script_fallback_mark_positioning : 1;
const struct hb_ot_shaper_t *shaper;
HB_INTERNAL hb_ot_shape_planner_t (hb_face_t *face,
const hb_segment_properties_t &props);
HB_INTERNAL void compile (hb_ot_shape_plan_t &plan,
const hb_ot_shape_plan_key_t &key);
};
#endif /* HB_OT_SHAPE_HH */
|