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
|
/* harfbuzz-buffer.h: Buffer of glyphs for substitution/positioning
*
* Copyright 2004,7 Red Hat Software
*
* Portions Copyright 1996-2000 by
* David Turner, Robert Wilhelm, and Werner Lemberg.
*
* This file is part of the FreeType project, and may only be used
* modified and distributed under the terms of the FreeType project
* license, LICENSE.TXT. By continuing to use, modify, or distribute
* this file you indicate that you have read the license and
* understand and accept it fully.
*/
#ifndef HARFBUZZ_BUFFER_H
#define HARFBUZZ_BUFFER_H
#include "harfbuzz-global.h"
HB_BEGIN_HEADER
typedef struct HB_GlyphItemRec_ {
HB_UInt gindex;
HB_UInt properties;
HB_UInt cluster;
HB_UShort component;
HB_UShort ligID;
HB_UShort gproperties;
} HB_GlyphItemRec, *HB_GlyphItem;
typedef struct HB_PositionRec_ {
HB_Fixed x_pos;
HB_Fixed y_pos;
HB_Fixed x_advance;
HB_Fixed y_advance;
HB_UShort back; /* number of glyphs to go back
for drawing current glyph */
HB_Bool new_advance; /* if set, the advance width values are
absolute, i.e., they won't be
added to the original glyph's value
but rather replace them. */
HB_Short cursive_chain; /* character to which this connects,
may be positive or negative; used
only internally */
} HB_PositionRec, *HB_Position;
typedef struct HB_BufferRec_{
HB_UInt allocated;
HB_UInt in_length;
HB_UInt out_length;
HB_UInt in_pos;
HB_UInt out_pos;
HB_Bool separate_out;
HB_GlyphItem in_string;
HB_GlyphItem out_string;
HB_GlyphItem alt_string;
HB_Position positions;
HB_UShort max_ligID;
} HB_BufferRec, *HB_Buffer;
HB_Error
hb_buffer_new( HB_Buffer *buffer );
void
hb_buffer_free( HB_Buffer buffer );
void
hb_buffer_clear( HB_Buffer buffer );
HB_Error
hb_buffer_add_glyph( HB_Buffer buffer,
HB_UInt glyph_index,
HB_UInt properties,
HB_UInt cluster );
HB_END_HEADER
#endif /* HARFBUZZ_BUFFER_H */
|
