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//========================================================================
//
// FoFiTrueType.h
//
// Copyright 1999-2003 Glyph & Cog, LLC
//
//========================================================================
//========================================================================
//
// Modified under the Poppler project - http://poppler.freedesktop.org
//
// All changes made under the Poppler project to this file are licensed
// under GPL version 2 or later
//
// Copyright (C) 2006 Takashi Iwai <tiwai@suse.de>
// Copyright (C) 2007 Koji Otani <sho@bbr.jp>
// Copyright (C) 2011, 2012, 2018 Albert Astals Cid <aacid@kde.org>
// Copyright (C) 2012 Suzuki Toshiya <mpsuzuki@hiroshima-u.ac.jp>
// Copyright (C) 2016 William Bader <williambader@hotmail.com>
// Copyright (C) 2018 Adam Reichold <adam.reichold@t-online.de>
//
// To see a description of the changes please see the Changelog file that
// came with your tarball or type make ChangeLog if you are building from git
//
//========================================================================
#ifndef FOFITRUETYPE_H
#define FOFITRUETYPE_H
#include "stddef.h"
#include <unordered_map>
#include <string>
#include "FoFiBase.h"
class GooString;
struct TrueTypeTable;
struct TrueTypeCmap;
//------------------------------------------------------------------------
// FoFiTrueType
//------------------------------------------------------------------------
class FoFiTrueType: public FoFiBase {
public:
// Create a FoFiTrueType object from a memory buffer.
static FoFiTrueType *make(const char *fileA, int lenA, int faceIndexA=0);
// Create a FoFiTrueType object from a file on disk.
static FoFiTrueType *load(const char *fileName, int faceIndexA=0);
~FoFiTrueType();
// Returns true if this an OpenType font containing CFF data, false
// if it's a TrueType font (or OpenType font with TrueType data).
bool isOpenTypeCFF() const { return openTypeCFF; }
// Return the number of cmaps defined by this font.
int getNumCmaps() const;
// Return the platform ID of the <i>th cmap.
int getCmapPlatform(int i) const;
// Return the encoding ID of the <i>th cmap.
int getCmapEncoding(int i) const;
// Return the index of the cmap for <platform>, <encoding>. Returns
// -1 if there is no corresponding cmap.
int findCmap(int platform, int encoding) const;
// Return the GID corresponding to <c> according to the <i>th cmap.
int mapCodeToGID(int i, unsigned int c) const;
// map gid to vertical glyph gid if exist.
// if not exist return original gid
unsigned int mapToVertGID(unsigned int orgGID);
// 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(const char *name) const;
// 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.)
int *getCIDToGIDMap(int *nCIDs) const;
// 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() const;
// Return the font matrix as an array of six numbers. (Only useful
// for OpenType CFF fonts.)
void getFontMatrix(double *mat) const;
// 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(const char *psName, char **encoding,
int *codeToGID,
FoFiOutputFunc outputFunc, void *outputStream) const;
// 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(const char *psName, const char **newEncoding, bool ascii,
FoFiOutputFunc outputFunc, void *outputStream) const;
// 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(const char *psName, int *cidMap, int nCIDs,
bool needVerticalMetrics,
FoFiOutputFunc outputFunc, void *outputStream) const;
// 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(const char *psName, int *cidMap, int nCIDs,
FoFiOutputFunc outputFunc, void *outputStream) const;
// 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(const char *psName, int *cidMap, int nCIDs,
bool needVerticalMetrics,
int *maxValidGlyph,
FoFiOutputFunc outputFunc, void *outputStream) const;
// 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(const char *psName, int *cidMap, int nCIDs,
FoFiOutputFunc outputFunc, void *outputStream) const;
// Returns a pointer to the CFF font embedded in this OpenType font.
// If successful, sets *<start> and *<length>, and returns true.
// Otherwise returns false. (Only useful for OpenType CFF fonts).
bool getCFFBlock(char **start, int *length) const;
// setup vert/vrt2 GSUB for default lang
int setupGSUB(const char *scriptName);
// setup vert/vrt2 GSUB for specified lang
int setupGSUB(const char *scriptName, const char* languageName);
private:
FoFiTrueType(const char *fileA, int lenA, bool freeFileDataA, int faceIndexA);
void cvtEncoding(char **encoding,
FoFiOutputFunc outputFunc,
void *outputStream) const;
void cvtCharStrings(char **encoding,
int *codeToGID,
FoFiOutputFunc outputFunc,
void *outputStream) const;
void cvtSfnts(FoFiOutputFunc outputFunc,
void *outputStream, GooString *name,
bool needVerticalMetrics,
int *maxUsedGlyph) const;
void dumpString(const unsigned char *s, int length,
FoFiOutputFunc outputFunc,
void *outputStream) const;
unsigned int computeTableChecksum(const unsigned char *data, int length) const;
void parse();
void readPostTable();
int seekTable(const char *tag) const;
unsigned int charToTag(const char *tagName);
unsigned int doMapToVertGID(unsigned int orgGID);
unsigned int scanLookupList(unsigned int listIndex, unsigned int orgGID);
unsigned int scanLookupSubTable(unsigned int subTable, unsigned int orgGID);
int checkGIDInCoverage(unsigned int coverage, unsigned int orgGID);
TrueTypeTable *tables;
int nTables;
TrueTypeCmap *cmaps;
int nCmaps;
int nGlyphs;
int locaFmt;
int bbox[4];
std::unordered_map<std::string,int> nameToGID;
bool openTypeCFF;
bool parsedOk;
int faceIndex;
unsigned int gsubFeatureTable;
unsigned int gsubLookupList;
};
#endif
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