1 /*
2 * Copyright 2011 Google Inc. All Rights Reserved.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #ifndef SFNTLY_CPP_SRC_SFNTLY_TAG_H_
18 #define SFNTLY_CPP_SRC_SFNTLY_TAG_H_
19
20 #include <cstddef>
21
22 #include "sfntly/port/type.h"
23
24 namespace sfntly {
25
26 // Font identification tags used for tables, features, etc.
27 // Tag names are consistent with the OpenType and sfnt specs.
28 struct Tag {
29 static const int32_t ttcf;
30
31 // Table Type Tags
32 // required tables
33 static const int32_t cmap;
34 static const int32_t head;
35 static const int32_t hhea;
36 static const int32_t hmtx;
37 static const int32_t maxp;
38 static const int32_t name;
39 static const int32_t OS_2;
40 static const int32_t post;
41
42 // TrueType outline tables
43 static const int32_t cvt;
44 static const int32_t fpgm;
45 static const int32_t glyf;
46 static const int32_t loca;
47 static const int32_t prep;
48
49 // PostScript outline tables
50 static const int32_t CFF;
51 static const int32_t VORG;
52
53 // opentype bitmap glyph outlines
54 static const int32_t EBDT;
55 static const int32_t EBLC;
56 static const int32_t EBSC;
57
58 // advanced typographic features
59 static const int32_t BASE;
60 static const int32_t GDEF;
61 static const int32_t GPOS;
62 static const int32_t GSUB;
63 static const int32_t JSTF;
64
65 // other
66 static const int32_t DSIG;
67 static const int32_t gasp;
68 static const int32_t hdmx;
69 static const int32_t kern;
70 static const int32_t LTSH;
71 static const int32_t PCLT;
72 static const int32_t VDMX;
73 static const int32_t vhea;
74 static const int32_t vmtx;
75
76 // AAT tables
77 static const int32_t bsln;
78 static const int32_t feat;
79 static const int32_t lcar;
80 static const int32_t morx;
81 static const int32_t opbd;
82 static const int32_t prop;
83
84 // Graphite tables
85 static const int32_t Feat;
86 static const int32_t Glat;
87 static const int32_t Gloc;
88 static const int32_t Sile;
89 static const int32_t Silf;
90
91 // truetype bitmap font tables
92 static const int32_t bhed;
93 static const int32_t bdat;
94 static const int32_t bloc;
95 };
96
97 // Create integer tag value for human readable tag name.
GenerateTag(int32_t a,int32_t b,int32_t c,int32_t d)98 inline int32_t GenerateTag(int32_t a, int32_t b, int32_t c, int32_t d) {
99 return (a << 24) | (b << 16) | (c << 8) | d;
100 }
101
102 // Translate tag to human readable string.
103 // The Caller must delete[] the returned value.
TagToString(int32_t tag)104 inline char* TagToString(int32_t tag) {
105 char *name = new char[5];
106 name[0] = static_cast<char>((tag & 0xff000000) >> 24);
107 name[1] = static_cast<char>((tag & 0x00ff0000) >> 16);
108 name[2] = static_cast<char>((tag & 0x0000ff00) >> 8);
109 name[3] = static_cast<char>(tag & 0x000000ff);
110 name[4] = 0;
111 return name;
112 }
113
114 // Note: For Java, these two orderings are in Font class. Moved here to avoid
115 // VC++ bug of not populating correct values.
116 extern const int32_t CFF_TABLE_ORDERING[];
117 extern const size_t CFF_TABLE_ORDERING_SIZE;
118 extern const int32_t TRUE_TYPE_TABLE_ORDERING[];
119 extern const size_t TRUE_TYPE_TABLE_ORDERING_SIZE;
120
121 } // namespace sfntly
122
123 #endif // SFNTLY_CPP_SRC_SFNTLY_TAG_H_
124