//======================================================================== // // 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 // Copyright (C) 2007 Koji Otani // Copyright (C) 2011, 2012, 2018-2020, 2024-2026 Albert Astals Cid // Copyright (C) 2012 Suzuki Toshiya // Copyright (C) 2016 William Bader // Copyright (C) 2018 Adam Reichold // Copyright (C) 2022 Oliver Sander // Copyright (C) 2024-2026 g10 Code GmbH, Author: Sune Stolborg Vuorela // // 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 #include #include #include #include #include "FoFiBase.h" #include "poppler_private_export.h" struct TrueTypeTable; struct TrueTypeCmap; //------------------------------------------------------------------------ // FoFiTrueType //------------------------------------------------------------------------ class POPPLER_PRIVATE_EXPORT FoFiTrueType : public FoFiBase { class PrivateTag { }; public: // Create a FoFiTrueType object from a memory buffer. // Note it is the responsibility of the caller to ensure the data is alive // during the lifetime of this object static std::unique_ptr make(std::span data, int faceIndexA); // Create a FoFiTrueType object from a file on disk. static std::unique_ptr load(const char *fileName, int faceIndexA); ~FoFiTrueType() override; // 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 th cmap. int getCmapPlatform(int i) const; // Return the encoding ID of the th cmap. int getCmapEncoding(int i) const; // Return the index of the cmap for , . Returns // -1 if there is no corresponding cmap. int findCmap(int platform, int encoding) const; // Return the GID corresponding to according to the 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 according to the post // table. Returns 0 if there is no mapping for or if the // font does not have a post table. int mapNameToGID(const char *name) const; // Return the mapping from CIDs to GIDs // This is only useful for CID fonts. (Only // useful for OpenType CFF fonts.) std::vector getCIDToGIDMap() 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; // Convert to a Type 42 font, suitable for embedding in a PostScript // file. will be used as the PostScript font name (so we // don't need to depend on the 'name' table in the font). The // array specifies the mapping from char codes to names. // If is NULL, the encoding is unknown or undefined. The // array specifies the mapping from char codes to GIDs. // (Not useful for OpenType CFF fonts.) void convertToType42(const std::string &psName, const std::array *encoding, const std::vector &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. is // non-NULL, it will be used as the PostScript font name. (Only // useful for OpenType CFF fonts.) void convertToType1(const char *psName, FoFiOutputFunc outputFunc, void *outputStream) const; // Convert to a Type 2 CIDFont, suitable for embedding in a // PostScript file. will be used as the PostScript font // name (so we don't need to depend on the 'name' table in the // font). The array maps CIDs to GIDs; it has // entries. (Not useful for OpenType CFF fonts.) void convertToCIDType2(const std::string &psName, const std::vector &cidMap, bool needVerticalMetrics, FoFiOutputFunc outputFunc, void *outputStream) const; // Convert to a Type 0 CIDFont, suitable for embedding in a // PostScript file. will be used as the PostScript font // name. (Only useful for OpenType CFF fonts.) void convertToCIDType0(const std::string &psName, const std::vector &cidMap, FoFiOutputFunc outputFunc, void *outputStream) const; // Convert to a Type 0 (but non-CID) composite font, suitable for // embedding in a PostScript file. will be used as the // PostScript font name (so we don't need to depend on the 'name' // table in the font). The array maps CIDs to GIDs; it has // entries. (Not useful for OpenType CFF fonts.) void convertToType0(const std::string &psName, const std::vector &cidMap, 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. will be used as the // PostScript font name. (Only useful for OpenType CFF fonts.) void convertToType0(const std::string &psName, const std::vector &cidMap, FoFiOutputFunc outputFunc, void *outputStream) const; // Returns a pointer to the CFF font embedded in this OpenType font. // If successful, sets * and *, and returns true. // Otherwise returns false. (Only useful for OpenType CFF fonts). std::optional> getCFFBlock() const; // setup vert/vrt2 GSUB for specified lang int setupGSUB(const std::string &scriptName, const std::string &languageName); FoFiTrueType(std::vector &&fileA, int faceIndexA, PrivateTag /*unused*/ = {}); FoFiTrueType(std::span data, int faceIndexA, PrivateTag /*unused*/ = {}); private: static void cvtEncoding(const std::array *encoding, FoFiOutputFunc outputFunc, void *outputStream); void cvtCharStrings(const std::array *encoding, const std::vector &codeToGID, FoFiOutputFunc outputFunc, void *outputStream) const; void cvtSfnts(FoFiOutputFunc outputFunc, void *outputStream, const std::optional &name, bool needVerticalMetrics, int *maxUsedGlyph) const; static void dumpString(std::span s, FoFiOutputFunc outputFunc, void *outputStream); static unsigned int computeTableChecksum(std::span data); void parse(); void readPostTable(); int seekTable(const char *tag) const; static unsigned int charToTag(const std::string &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); std::vector tables; std::vector cmaps; int nGlyphs; int locaFmt; int bbox[4]; std::unordered_map nameToGID; bool openTypeCFF; bool parsedOk; int faceIndex; unsigned int gsubFeatureTable; unsigned int gsubLookupList; }; #endif