1/*
2 * Copyright (C) 1998-2004  David Turner and Werner Lemberg
3 * Copyright (C) 2006  Behdad Esfahbod
4 *
5 * This is part of HarfBuzz, an OpenType Layout engine library.
6 *
7 * Permission is hereby granted, without written agreement and without
8 * license or royalty fees, to use, copy, modify, and distribute this
9 * software and its documentation for any purpose, provided that the
10 * above copyright notice and the following two paragraphs appear in
11 * all copies of this software.
12 *
13 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
14 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
15 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
16 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
17 * DAMAGE.
18 *
19 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
20 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
21 * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
22 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
23 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
24 */
25
26#ifndef HARFBUZZ_GDEF_PRIVATE_H
27#define HARFBUZZ_GDEF_PRIVATE_H
28
29#include "harfbuzz-impl.h"
30#include "harfbuzz-stream-private.h"
31#include "harfbuzz-buffer-private.h"
32#include "harfbuzz-gdef.h"
33
34HB_BEGIN_HEADER
35
36
37#ifdef HB_USE_PACKED_STRUCTS
38#pragma pack(push, 1)
39#endif
40
41/* Attachment related structures */
42
43struct  HB_AttachPoint_
44{
45  HB_UShort*  PointIndex;             /* array of contour points      */
46  HB_UShort   PointCount;             /* size of the PointIndex array */
47};
48
49/* Ligature Caret related structures */
50
51struct  HB_CaretValueFormat1_
52{
53  HB_Short  Coordinate;               /* x or y value (in design units) */
54};
55
56typedef struct HB_CaretValueFormat1_  HB_CaretValueFormat1;
57
58
59struct  HB_CaretValueFormat2_
60{
61  HB_UShort  CaretValuePoint;         /* contour point index on glyph */
62};
63
64typedef struct HB_CaretValueFormat2_  HB_CaretValueFormat2;
65
66
67struct  HB_CaretValueFormat3_
68{
69  HB_Device*  Device;                 /* Device table for x or y value  */
70  HB_Short    Coordinate;             /* x or y value (in design units) */
71};
72
73typedef struct HB_CaretValueFormat3_  HB_CaretValueFormat3;
74
75
76#ifdef HB_SUPPORT_MULTIPLE_MASTER
77struct  HB_CaretValueFormat4_
78{
79  HB_UShort  IdCaretValue;            /* metric ID */
80};
81
82typedef struct HB_CaretValueFormat4_  HB_CaretValueFormat4;
83#endif
84
85
86struct  HB_CaretValue_
87{
88  union
89  {
90    HB_CaretValueFormat1  cvf1;
91    HB_CaretValueFormat2  cvf2;
92    HB_CaretValueFormat3  cvf3;
93#ifdef HB_SUPPORT_MULTIPLE_MASTER
94    HB_CaretValueFormat4  cvf4;
95#endif
96  } cvf;
97
98  HB_Byte  CaretValueFormat;          /* 1, 2, 3, or 4 */
99};
100
101typedef struct HB_CaretValue_  HB_CaretValue;
102
103
104struct  HB_LigGlyph_
105{
106  HB_CaretValue*  CaretValue;        /* array of caret values  */
107  HB_UShort        CaretCount;        /* number of caret values */
108  HB_Bool          loaded;
109};
110
111
112HB_INTERNAL HB_Error
113_HB_GDEF_Add_Glyph_Property( HB_GDEFHeader* gdef,
114				       HB_UShort        glyphID,
115				       HB_UShort        property );
116
117HB_INTERNAL HB_Error
118_HB_GDEF_Check_Property( HB_GDEFHeader* gdef,
119				   HB_GlyphItem    item,
120				   HB_UShort        flags,
121				   HB_UShort*       property );
122
123HB_INTERNAL HB_Error
124_HB_GDEF_LoadMarkAttachClassDef_From_LookupFlags( HB_GDEFHeader* gdef,
125						  HB_Stream      input,
126						  HB_Lookup*     lo,
127						  HB_UShort      num_lookups );
128
129#ifdef HB_USE_PACKED_STRUCTS
130#pragma pack(pop)
131#endif
132
133HB_END_HEADER
134
135#endif /* HARFBUZZ_GDEF_PRIVATE_H */
136