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
|
/*
* Copyright (C) 1998-2004 David Turner and Werner Lemberg
* Copyright (C) 2004,2007,2009,2010 Red Hat, 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.
*
* Red Hat Author(s): Owen Taylor, Behdad Esfahbod
*/
#ifndef HB_BUFFER_PRIVATE_HH
#define HB_BUFFER_PRIVATE_HH
#include "hb-private.h"
#include "hb-buffer.h"
#include "hb-unicode-private.h"
HB_BEGIN_DECLS
/* XXX */
#define HB_BUFFER_GLYPH_PROPERTIES_UNKNOWN 0xFFFF
#define gproperty() var2.u32
ASSERT_STATIC (sizeof (hb_glyph_info_t) == 20);
ASSERT_STATIC (sizeof (hb_glyph_info_t) == sizeof (hb_glyph_position_t));
typedef struct _hb_segment_properties_t {
hb_direction_t direction;
hb_script_t script;
hb_language_t language;
} hb_segment_properties_t;
HB_INTERNAL void
_hb_buffer_swap (hb_buffer_t *buffer);
HB_INTERNAL void
_hb_buffer_clear_output (hb_buffer_t *buffer);
HB_INTERNAL void
_hb_buffer_replace_glyphs_be16 (hb_buffer_t *buffer,
unsigned int num_in,
unsigned int num_out,
const uint16_t *glyph_data_be);
HB_INTERNAL void
_hb_buffer_replace_glyph (hb_buffer_t *buffer,
hb_codepoint_t glyph_index);
HB_INTERNAL void
_hb_buffer_next_glyph (hb_buffer_t *buffer);
HB_INTERNAL void
_hb_buffer_reset_masks (hb_buffer_t *buffer,
hb_mask_t mask);
HB_INTERNAL void
_hb_buffer_add_masks (hb_buffer_t *buffer,
hb_mask_t mask);
HB_INTERNAL void
_hb_buffer_set_masks (hb_buffer_t *buffer,
hb_mask_t value,
hb_mask_t mask,
unsigned int cluster_start,
unsigned int cluster_end);
struct _hb_buffer_t {
hb_reference_count_t ref_count;
/* Information about how the text in the buffer should be treated */
hb_unicode_funcs_t *unicode; /* Unicode functions */
hb_segment_properties_t props; /* Script, language, direction */
/* Buffer contents */
unsigned int allocated; /* Length of allocated arrays */
hb_bool_t have_output; /* Whether we have an output buffer going on */
hb_bool_t have_positions; /* Whether we have positions */
hb_bool_t in_error; /* Allocation failed */
unsigned int i; /* Cursor into ->info and ->pos arrays */
unsigned int len; /* Length of ->info and ->pos arrays */
unsigned int out_len; /* Length of ->out array */
hb_glyph_info_t *info;
hb_glyph_info_t *out_info;
hb_glyph_position_t *pos;
/* Other stuff */
unsigned int serial;
/* Methods */
inline unsigned int next_serial (void) { return serial++; }
inline void swap (void) { _hb_buffer_swap (this); }
inline void clear_output (void) { _hb_buffer_clear_output (this); }
inline void next_glyph (void) { _hb_buffer_next_glyph (this); }
inline void replace_glyphs_be16 (unsigned int num_in,
unsigned int num_out,
const uint16_t *glyph_data_be)
{ _hb_buffer_replace_glyphs_be16 (this, num_in, num_out, glyph_data_be); }
inline void replace_glyph (hb_codepoint_t glyph_index)
{ _hb_buffer_replace_glyph (this, glyph_index); }
inline void reset_masks (hb_mask_t mask)
{
for (unsigned int i = 0; i < len; i++)
info[i].mask = mask;
}
inline void add_masks (hb_mask_t mask)
{
for (unsigned int i = 0; i < len; i++)
info[i].mask |= mask;
}
inline void set_masks (hb_mask_t value,
hb_mask_t mask,
unsigned int cluster_start,
unsigned int cluster_end)
{ _hb_buffer_set_masks (this, value, mask, cluster_start, cluster_end); }
};
HB_END_DECLS
#endif /* HB_BUFFER_PRIVATE_HH */
|
