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ef416fc2 | 1 | //======================================================================== |
2 | // | |
3 | // FoFiTrueType.h | |
4 | // | |
5 | // Copyright 1999-2003 Glyph & Cog, LLC | |
6 | // | |
7 | //======================================================================== | |
8 | ||
9 | #ifndef FOFITRUETYPE_H | |
10 | #define FOFITRUETYPE_H | |
11 | ||
12 | #include <config.h> | |
13 | ||
14 | #ifdef USE_GCC_PRAGMAS | |
15 | #pragma interface | |
16 | #endif | |
17 | ||
18 | #include "gtypes.h" | |
19 | #include "FoFiBase.h" | |
20 | ||
21 | class GString; | |
22 | class GHash; | |
23 | struct TrueTypeTable; | |
24 | struct TrueTypeCmap; | |
25 | ||
26 | //------------------------------------------------------------------------ | |
27 | // FoFiTrueType | |
28 | //------------------------------------------------------------------------ | |
29 | ||
30 | class FoFiTrueType: public FoFiBase { | |
31 | public: | |
32 | ||
33 | // Create a FoFiTrueType object from a memory buffer. | |
34 | static FoFiTrueType *make(char *fileA, int lenA); | |
35 | ||
36 | // Create a FoFiTrueType object from a file on disk. | |
37 | static FoFiTrueType *load(char *fileName); | |
38 | ||
39 | virtual ~FoFiTrueType(); | |
40 | ||
41 | // Return the number of cmaps defined by this font. | |
42 | int getNumCmaps(); | |
43 | ||
44 | // Return the platform ID of the <i>th cmap. | |
45 | int getCmapPlatform(int i); | |
46 | ||
47 | // Return the encoding ID of the <i>th cmap. | |
48 | int getCmapEncoding(int i); | |
49 | ||
50 | // Return the index of the cmap for <platform>, <encoding>. Returns | |
51 | // -1 if there is no corresponding cmap. | |
52 | int findCmap(int platform, int encoding); | |
53 | ||
54 | // Return the GID corresponding to <c> according to the <i>th cmap. | |
55 | Gushort mapCodeToGID(int i, int c); | |
56 | ||
57 | // Returns the GID corresponding to <name> according to the post | |
58 | // table. Returns 0 if there is no mapping for <name> or if the | |
59 | // font does not have a post table. | |
60 | int mapNameToGID(char *name); | |
61 | ||
62 | // Returns the least restrictive embedding licensing right (as | |
63 | // defined by the TrueType spec): | |
64 | // * 4: OS/2 table is missing or invalid | |
65 | // * 3: installable embedding | |
66 | // * 2: editable embedding | |
67 | // * 1: preview & print embedding | |
68 | // * 0: restricted license embedding | |
69 | int getEmbeddingRights(); | |
70 | ||
71 | // Convert to a Type 42 font, suitable for embedding in a PostScript | |
72 | // file. <psName> will be used as the PostScript font name (so we | |
73 | // don't need to depend on the 'name' table in the font). The | |
74 | // <encoding> array specifies the mapping from char codes to names. | |
75 | // If <encoding> is NULL, the encoding is unknown or undefined. The | |
76 | // <codeToGID> array specifies the mapping from char codes to GIDs. | |
77 | void convertToType42(char *psName, char **encoding, | |
78 | Gushort *codeToGID, | |
79 | FoFiOutputFunc outputFunc, void *outputStream); | |
80 | ||
81 | // Convert to a Type 2 CIDFont, suitable for embedding in a | |
82 | // PostScript file. <psName> will be used as the PostScript font | |
83 | // name (so we don't need to depend on the 'name' table in the | |
84 | // font). The <cidMap> array maps CIDs to GIDs; it has <nCIDs> | |
85 | // entries. | |
86 | void convertToCIDType2(char *psName, Gushort *cidMap, int nCIDs, | |
87 | GBool needVerticalMetrics, | |
88 | FoFiOutputFunc outputFunc, void *outputStream); | |
89 | ||
90 | // Convert to a Type 0 (but non-CID) composite font, suitable for | |
91 | // embedding in a PostScript file. <psName> will be used as the | |
92 | // PostScript font name (so we don't need to depend on the 'name' | |
93 | // table in the font). The <cidMap> array maps CIDs to GIDs; it has | |
94 | // <nCIDs> entries. | |
95 | void convertToType0(char *psName, Gushort *cidMap, int nCIDs, | |
96 | GBool needVerticalMetrics, | |
97 | FoFiOutputFunc outputFunc, void *outputStream); | |
98 | ||
99 | // Write a clean TTF file, filling in missing tables and correcting | |
100 | // various other errors. If <name> is non-NULL, the font is renamed | |
101 | // to <name>. If <codeToGID> is non-NULL, the font is re-encoded, | |
102 | // using a Windows Unicode cmap. If <name> is NULL and the font is | |
103 | // complete and correct, it will be written unmodified. | |
104 | void writeTTF(FoFiOutputFunc outputFunc, void *outputStream, | |
105 | char *name = NULL, Gushort *codeToGID = NULL); | |
106 | ||
107 | private: | |
108 | ||
109 | FoFiTrueType(char *fileA, int lenA, GBool freeFileDataA); | |
110 | void cvtEncoding(char **encoding, | |
111 | FoFiOutputFunc outputFunc, | |
112 | void *outputStream); | |
113 | void cvtCharStrings(char **encoding, | |
114 | Gushort *codeToGID, | |
115 | FoFiOutputFunc outputFunc, | |
116 | void *outputStream); | |
117 | void cvtSfnts(FoFiOutputFunc outputFunc, | |
118 | void *outputStream, GString *name, | |
119 | GBool needVerticalMetrics); | |
120 | void dumpString(Guchar *s, int length, | |
121 | FoFiOutputFunc outputFunc, | |
122 | void *outputStream); | |
123 | Guint computeTableChecksum(Guchar *data, int length); | |
124 | void parse(); | |
125 | void readPostTable(); | |
126 | int seekTable(char *tag); | |
127 | ||
128 | TrueTypeTable *tables; | |
129 | int nTables; | |
130 | TrueTypeCmap *cmaps; | |
131 | int nCmaps; | |
132 | int nGlyphs; | |
133 | int locaFmt; | |
134 | int bbox[4]; | |
135 | GHash *nameToGID; | |
136 | ||
137 | GBool parsedOk; | |
138 | }; | |
139 | ||
140 | #endif |