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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.
98 0 : inline int32_t GenerateTag(int32_t a, int32_t b, int32_t c, int32_t d) {
99 0 : 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.
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_
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