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 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. 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
