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//========================================================================
//
// FoFiTrueType.h
//
// Copyright 1999-2003 Glyph & Cog, LLC
//
//========================================================================
#ifndef FOFITRUETYPE_H
#define FOFITRUETYPE_H
#include <aconf.h>
#ifdef USE_GCC_PRAGMAS
#pragma interface
#endif
#include "gtypes.h"
#include "FoFiBase.h"
class GString;
class GHash;
struct TrueTypeTable;
struct TrueTypeCmap;
//------------------------------------------------------------------------
// FoFiTrueType
//------------------------------------------------------------------------
class FoFiTrueType: public FoFiBase {
public:
// Create a FoFiTrueType object from a memory buffer.
static FoFiTrueType *make(char *fileA, int lenA, int faceIndexA=0);
// Create a FoFiTrueType object from a file on disk.
static FoFiTrueType *load(char *fileName, int faceIndexA=0);
virtual ~FoFiTrueType();
// Returns true if this an OpenType font containing CFF data, false
// if it's a TrueType font (or OpenType font with TrueType data).
GBool isOpenTypeCFF() { return openTypeCFF; }
// Return the number of cmaps defined by this font.
int getNumCmaps();
// Return the platform ID of the <i>th cmap.
int getCmapPlatform(int i);
// Return the encoding ID of the <i>th cmap.
int getCmapEncoding(int i);
// Return the index of the cmap for <platform>, <encoding>. Returns
// -1 if there is no corresponding cmap.
int findCmap(int platform, int encoding);
// Return the GID corresponding to <c> according to the <i>th cmap.
Gushort mapCodeToGID(int i, int c);
// Returns the GID corresponding to <name> according to the post
// table. Returns 0 if there is no mapping for <name> or if the
// font does not have a post table.
int mapNameToGID(char *name);
// Return the mapping from CIDs to GIDs, and return the number of
// CIDs in *<nCIDs>. This is only useful for CID fonts. (Only
// useful for OpenType CFF fonts.)
Gushort *getCIDToGIDMap(int *nCIDs);
// Returns the least restrictive embedding licensing right (as
// defined by the TrueType spec):
// * 4: OS/2 table is missing or invalid
// * 3: installable embedding
// * 2: editable embedding
// * 1: preview & print embedding
// * 0: restricted license embedding
int getEmbeddingRights();
// Convert to a Type 42 font, suitable for embedding in a PostScript
// file. <psName> will be used as the PostScript font name (so we
// don't need to depend on the 'name' table in the font). The
// <encoding> array specifies the mapping from char codes to names.
// If <encoding> is NULL, the encoding is unknown or undefined. The
// <codeToGID> array specifies the mapping from char codes to GIDs.
// (Not useful for OpenType CFF fonts.)
void convertToType42(char *psName, char **encoding,
Gushort *codeToGID,
FoFiOutputFunc outputFunc, void *outputStream);
// Convert to a Type 1 font, suitable for embedding in a PostScript
// file. This is only useful with 8-bit fonts. If <newEncoding> is
// not NULL, it will be used in place of the encoding in the Type 1C
// font. If <ascii> is true the eexec section will be hex-encoded,
// otherwise it will be left as binary data. If <psName> is
// non-NULL, it will be used as the PostScript font name. (Only
// useful for OpenType CFF fonts.)
void convertToType1(char *psName, char **newEncoding, GBool ascii,
FoFiOutputFunc outputFunc, void *outputStream);
// Convert to a Type 2 CIDFont, suitable for embedding in a
// PostScript file. <psName> will be used as the PostScript font
// name (so we don't need to depend on the 'name' table in the
// font). The <cidMap> array maps CIDs to GIDs; it has <nCIDs>
// entries. (Not useful for OpenType CFF fonts.)
void convertToCIDType2(char *psName, Gushort *cidMap, int nCIDs,
GBool needVerticalMetrics,
FoFiOutputFunc outputFunc, void *outputStream);
// Convert to a Type 0 CIDFont, suitable for embedding in a
// PostScript file. <psName> will be used as the PostScript font
// name. (Only useful for OpenType CFF fonts.)
void convertToCIDType0(char *psName,
FoFiOutputFunc outputFunc, void *outputStream);
// Convert to a Type 0 (but non-CID) composite font, suitable for
// embedding in a PostScript file. <psName> will be used as the
// PostScript font name (so we don't need to depend on the 'name'
// table in the font). The <cidMap> array maps CIDs to GIDs; it has
// <nCIDs> entries. (Not useful for OpenType CFF fonts.)
void convertToType0(char *psName, Gushort *cidMap, int nCIDs,
GBool needVerticalMetrics,
FoFiOutputFunc outputFunc, void *outputStream);
// Convert to a Type 0 (but non-CID) composite font, suitable for
// embedding in a PostScript file. <psName> will be used as the
// PostScript font name. (Only useful for OpenType CFF fonts.)
void convertToType0(char *psName,
FoFiOutputFunc outputFunc, void *outputStream);
// Write a clean TTF file, filling in missing tables and correcting
// various other errors. If <name> is non-NULL, the font is renamed
// to <name>. If <codeToGID> is non-NULL, the font is re-encoded,
// using a Windows Unicode cmap. If <name> is NULL and the font is
// complete and correct, it will be written unmodified. (Not useful
// for OpenType CFF fonts.)
void writeTTF(FoFiOutputFunc outputFunc, void *outputStream,
char *name = NULL, Gushort *codeToGID = NULL);
private:
FoFiTrueType(char *fileA, int lenA, GBool freeFileDataA, int faceIndexA);
void cvtEncoding(char **encoding,
FoFiOutputFunc outputFunc,
void *outputStream);
void cvtCharStrings(char **encoding,
Gushort *codeToGID,
FoFiOutputFunc outputFunc,
void *outputStream);
void cvtSfnts(FoFiOutputFunc outputFunc,
void *outputStream, GString *name,
GBool needVerticalMetrics);
void dumpString(Guchar *s, int length,
FoFiOutputFunc outputFunc,
void *outputStream);
Guint computeTableChecksum(Guchar *data, int length);
void parse();
void readPostTable();
int seekTable(char *tag);
TrueTypeTable *tables;
int nTables;
TrueTypeCmap *cmaps;
int nCmaps;
int nGlyphs;
int locaFmt;
int bbox[4];
GHash *nameToGID;
GBool openTypeCFF;
GBool parsedOk;
int faceIndex;
};
#endif
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