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/***************************************************************************/
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/* */
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/* tttypes.h */
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/* */
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/* Basic SFNT/TrueType type definitions and interface (specification */
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/* only). */
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/* */
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/* Copyright 1996-2001, 2002, 2004, 2005, 2006, 2007, 2008 by */
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/* David Turner, Robert Wilhelm, and Werner Lemberg. */
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/* */
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/* This file is part of the FreeType project, and may only be used, */
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/* modified, and distributed under the terms of the FreeType project */
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/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
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/* this file you indicate that you have read the license and */
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/* understand and accept it fully. */
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/* */
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/***************************************************************************/
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#ifndef __TTTYPES_H__
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#define __TTTYPES_H__
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#include <ft2build.h>
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#include FT_TRUETYPE_TABLES_H
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#include FT_INTERNAL_OBJECTS_H
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#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
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#include FT_MULTIPLE_MASTERS_H
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#endif
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FT_BEGIN_HEADER
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/*************************************************************************/
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/*************************************************************************/
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/*************************************************************************/
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/*** ***/
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/*** ***/
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/*** REQUIRED TRUETYPE/OPENTYPE TABLES DEFINITIONS ***/
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/*** ***/
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/*** ***/
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/*************************************************************************/
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/*************************************************************************/
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/*************************************************************************/
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/*************************************************************************/
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/* */
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/* <Struct> */
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/* TTC_HeaderRec */
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/* */
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/* <Description> */
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/* TrueType collection header. This table contains the offsets of */
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/* the font headers of each distinct TrueType face in the file. */
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/* */
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/* <Fields> */
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/* tag :: Must be `ttc ' to indicate a TrueType collection. */
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/* */
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/* version :: The version number. */
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/* */
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/* count :: The number of faces in the collection. The */
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/* specification says this should be an unsigned long, but */
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/* we use a signed long since we need the value -1 for */
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/* specific purposes. */
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/* */
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/* offsets :: The offsets of the font headers, one per face. */
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/* */
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typedef struct TTC_HeaderRec_
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{
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FT_ULong tag;
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FT_Fixed version;
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FT_Long count;
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FT_ULong* offsets;
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} TTC_HeaderRec;
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/*************************************************************************/
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/* */
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/* <Struct> */
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/* SFNT_HeaderRec */
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/* */
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/* <Description> */
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/* SFNT file format header. */
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/* */
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/* <Fields> */
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/* format_tag :: The font format tag. */
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/* */
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/* num_tables :: The number of tables in file. */
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/* */
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/* search_range :: Must be `16 * (max power of 2 <= num_tables)'. */
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/* */
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/* entry_selector :: Must be log2 of `search_range / 16'. */
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/* */
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/* range_shift :: Must be `num_tables * 16 - search_range'. */
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/* */
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typedef struct SFNT_HeaderRec_
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{
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FT_ULong format_tag;
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FT_UShort num_tables;
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FT_UShort search_range;
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FT_UShort entry_selector;
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FT_UShort range_shift;
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FT_ULong offset; /* not in file */
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} SFNT_HeaderRec, *SFNT_Header;
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/*************************************************************************/
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/* */
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/* <Struct> */
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/* TT_TableRec */
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/* */
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/* <Description> */
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/* This structure describes a given table of a TrueType font. */
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/* */
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/* <Fields> */
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/* Tag :: A four-bytes tag describing the table. */
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/* */
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/* CheckSum :: The table checksum. This value can be ignored. */
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/* */
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/* Offset :: The offset of the table from the start of the TrueType */
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/* font in its resource. */
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/* */
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/* Length :: The table length (in bytes). */
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/* */
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typedef struct TT_TableRec_
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{
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FT_ULong Tag; /* table type */
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FT_ULong CheckSum; /* table checksum */
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FT_ULong Offset; /* table file offset */
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FT_ULong Length; /* table length */
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} TT_TableRec, *TT_Table;
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/*************************************************************************/
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/* */
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/* <Struct> */
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/* TT_LongMetricsRec */
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/* */
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/* <Description> */
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/* A structure modeling the long metrics of the `hmtx' and `vmtx' */
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/* TrueType tables. The values are expressed in font units. */
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/* */
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/* <Fields> */
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/* advance :: The advance width or height for the glyph. */
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/* */
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/* bearing :: The left-side or top-side bearing for the glyph. */
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/* */
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typedef struct TT_LongMetricsRec_
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{
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FT_UShort advance;
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FT_Short bearing;
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} TT_LongMetricsRec, *TT_LongMetrics;
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/*************************************************************************/
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/* */
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/* <Type> */
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/* TT_ShortMetrics */
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/* */
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/* <Description> */
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/* A simple type to model the short metrics of the `hmtx' and `vmtx' */
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/* tables. */
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/* */
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typedef FT_Short TT_ShortMetrics;
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/*************************************************************************/
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/* */
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/* <Struct> */
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/* TT_NameEntryRec */
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/* */
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/* <Description> */
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/* A structure modeling TrueType name records. Name records are used */
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/* to store important strings like family name, style name, */
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/* copyright, etc. in _localized_ versions (i.e., language, encoding, */
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/* etc). */
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/* */
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/* <Fields> */
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/* platformID :: The ID of the name's encoding platform. */
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/* */
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/* encodingID :: The platform-specific ID for the name's encoding. */
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/* */
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/* languageID :: The platform-specific ID for the name's language. */
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/* */
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/* nameID :: The ID specifying what kind of name this is. */
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/* */
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/* stringLength :: The length of the string in bytes. */
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/* */
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/* stringOffset :: The offset to the string in the `name' table. */
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/* */
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/* string :: A pointer to the string's bytes. Note that these */
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/* are usually UTF-16 encoded characters. */
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/* */
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typedef struct TT_NameEntryRec_
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{
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FT_UShort platformID;
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FT_UShort encodingID;
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FT_UShort languageID;
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FT_UShort nameID;
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FT_UShort stringLength;
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FT_ULong stringOffset;
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/* this last field is not defined in the spec */
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/* but used by the FreeType engine */
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FT_Byte* string;
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} TT_NameEntryRec, *TT_NameEntry;
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/*************************************************************************/
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/* */
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/* <Struct> */
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/* TT_NameTableRec */
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/* */
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/* <Description> */
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/* A structure modeling the TrueType name table. */
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/* */
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/* <Fields> */
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/* format :: The format of the name table. */
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/* */
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/* numNameRecords :: The number of names in table. */
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/* */
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/* storageOffset :: The offset of the name table in the `name' */
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/* TrueType table. */
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/* */
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/* names :: An array of name records. */
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/* */
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/* stream :: the file's input stream. */
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/* */
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typedef struct TT_NameTableRec_
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{
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FT_UShort format;
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FT_UInt numNameRecords;
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FT_UInt storageOffset;
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TT_NameEntryRec* names;
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FT_Stream stream;
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} TT_NameTableRec, *TT_NameTable;
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/*************************************************************************/
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/*************************************************************************/
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/*************************************************************************/
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/*** ***/
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/*** ***/
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/*** OPTIONAL TRUETYPE/OPENTYPE TABLES DEFINITIONS ***/
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/*** ***/
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/*** ***/
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/*************************************************************************/
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/*************************************************************************/
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/*************************************************************************/
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/*************************************************************************/
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/* */
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/* <Struct> */
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/* TT_GaspRangeRec */
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/* */
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/* <Description> */
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/* A tiny structure used to model a gasp range according to the */
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/* TrueType specification. */
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/* */
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/* <Fields> */
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/* maxPPEM :: The maximum ppem value to which `gaspFlag' applies. */
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/* */
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/* gaspFlag :: A flag describing the grid-fitting and anti-aliasing */
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/* modes to be used. */
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/* */
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typedef struct TT_GaspRangeRec_
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{
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FT_UShort maxPPEM;
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FT_UShort gaspFlag;
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} TT_GaspRangeRec, *TT_GaspRange;
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#define TT_GASP_GRIDFIT 0x01
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#define TT_GASP_DOGRAY 0x02
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/*************************************************************************/
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/* */
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/* <Struct> */
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/* TT_GaspRec */
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/* */
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/* <Description> */
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/* A structure modeling the TrueType `gasp' table used to specify */
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/* grid-fitting and anti-aliasing behaviour. */
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/* */
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/* <Fields> */
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/* version :: The version number. */
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/* */
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/* numRanges :: The number of gasp ranges in table. */
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/* */
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/* gaspRanges :: An array of gasp ranges. */
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/* */
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typedef struct TT_Gasp_
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{
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FT_UShort version;
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FT_UShort numRanges;
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TT_GaspRange gaspRanges;
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} TT_GaspRec;
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#ifdef FT_CONFIG_OPTION_OLD_INTERNALS
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/*************************************************************************/
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/* */
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/* <Struct> */
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/* TT_HdmxEntryRec */
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/* */
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/* <Description> */
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/* A small structure used to model the pre-computed widths of a given */
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/* size. They are found in the `hdmx' table. */
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/* */
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/* <Fields> */
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/* ppem :: The pixels per EM value at which these metrics apply. */
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/* */
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/* max_width :: The maximum advance width for this metric. */
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/* */
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/* widths :: An array of widths. Note: These are 8-bit bytes. */
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/* */
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typedef struct TT_HdmxEntryRec_
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{
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FT_Byte ppem;
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FT_Byte max_width;
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FT_Byte* widths;
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} TT_HdmxEntryRec, *TT_HdmxEntry;
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/*************************************************************************/
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/* */
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/* <Struct> */
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/* TT_HdmxRec */
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/* */
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/* <Description> */
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/* A structure used to model the `hdmx' table, which contains */
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/* pre-computed widths for a set of given sizes/dimensions. */
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/* */
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/* <Fields> */
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/* version :: The version number. */
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/* */
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/* num_records :: The number of hdmx records. */
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/* */
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/* records :: An array of hdmx records. */
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/* */
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typedef struct TT_HdmxRec_
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{
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FT_UShort version;
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FT_Short num_records;
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TT_HdmxEntry records;
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} TT_HdmxRec, *TT_Hdmx;
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/*************************************************************************/
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/* */
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/* <Struct> */
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/* TT_Kern0_PairRec */
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/* */
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/* <Description> */
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/* A structure used to model a kerning pair for the kerning table */
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/* format 0. The engine now loads this table if it finds one in the */
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/* font file. */
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/* */
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/* <Fields> */
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/* left :: The index of the left glyph in pair. */
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/* */
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/* right :: The index of the right glyph in pair. */
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/* */
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/* value :: The kerning distance. A positive value spaces the */
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/* glyphs, a negative one makes them closer. */
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/* */
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typedef struct TT_Kern0_PairRec_
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{
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FT_UShort left; /* index of left glyph in pair */
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FT_UShort right; /* index of right glyph in pair */
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FT_FWord value; /* kerning value */
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} TT_Kern0_PairRec, *TT_Kern0_Pair;
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|
391 |
|
|
|
392 |
#endif /* FT_CONFIG_OPTION_OLD_INTERNALS */
|
|
|
393 |
|
|
|
394 |
|
|
|
395 |
/*************************************************************************/
|
|
|
396 |
/*************************************************************************/
|
|
|
397 |
/*************************************************************************/
|
|
|
398 |
/*** ***/
|
|
|
399 |
/*** ***/
|
|
|
400 |
/*** EMBEDDED BITMAPS SUPPORT ***/
|
|
|
401 |
/*** ***/
|
|
|
402 |
/*** ***/
|
|
|
403 |
/*************************************************************************/
|
|
|
404 |
/*************************************************************************/
|
|
|
405 |
/*************************************************************************/
|
|
|
406 |
|
|
|
407 |
|
|
|
408 |
/*************************************************************************/
|
|
|
409 |
/* */
|
|
|
410 |
/* <Struct> */
|
|
|
411 |
/* TT_SBit_MetricsRec */
|
|
|
412 |
/* */
|
|
|
413 |
/* <Description> */
|
|
|
414 |
/* A structure used to hold the big metrics of a given glyph bitmap */
|
|
|
415 |
/* in a TrueType or OpenType font. These are usually found in the */
|
|
|
416 |
/* `EBDT' (Microsoft) or `bloc' (Apple) table. */
|
|
|
417 |
/* */
|
|
|
418 |
/* <Fields> */
|
|
|
419 |
/* height :: The glyph height in pixels. */
|
|
|
420 |
/* */
|
|
|
421 |
/* width :: The glyph width in pixels. */
|
|
|
422 |
/* */
|
|
|
423 |
/* horiBearingX :: The horizontal left bearing. */
|
|
|
424 |
/* */
|
|
|
425 |
/* horiBearingY :: The horizontal top bearing. */
|
|
|
426 |
/* */
|
|
|
427 |
/* horiAdvance :: The horizontal advance. */
|
|
|
428 |
/* */
|
|
|
429 |
/* vertBearingX :: The vertical left bearing. */
|
|
|
430 |
/* */
|
|
|
431 |
/* vertBearingY :: The vertical top bearing. */
|
|
|
432 |
/* */
|
|
|
433 |
/* vertAdvance :: The vertical advance. */
|
|
|
434 |
/* */
|
|
|
435 |
typedef struct TT_SBit_MetricsRec_
|
|
|
436 |
{
|
|
|
437 |
FT_Byte height;
|
|
|
438 |
FT_Byte width;
|
|
|
439 |
|
|
|
440 |
FT_Char horiBearingX;
|
|
|
441 |
FT_Char horiBearingY;
|
|
|
442 |
FT_Byte horiAdvance;
|
|
|
443 |
|
|
|
444 |
FT_Char vertBearingX;
|
|
|
445 |
FT_Char vertBearingY;
|
|
|
446 |
FT_Byte vertAdvance;
|
|
|
447 |
|
|
|
448 |
} TT_SBit_MetricsRec, *TT_SBit_Metrics;
|
|
|
449 |
|
|
|
450 |
|
|
|
451 |
/*************************************************************************/
|
|
|
452 |
/* */
|
|
|
453 |
/* <Struct> */
|
|
|
454 |
/* TT_SBit_SmallMetricsRec */
|
|
|
455 |
/* */
|
|
|
456 |
/* <Description> */
|
|
|
457 |
/* A structure used to hold the small metrics of a given glyph bitmap */
|
|
|
458 |
/* in a TrueType or OpenType font. These are usually found in the */
|
|
|
459 |
/* `EBDT' (Microsoft) or the `bdat' (Apple) table. */
|
|
|
460 |
/* */
|
|
|
461 |
/* <Fields> */
|
|
|
462 |
/* height :: The glyph height in pixels. */
|
|
|
463 |
/* */
|
|
|
464 |
/* width :: The glyph width in pixels. */
|
|
|
465 |
/* */
|
|
|
466 |
/* bearingX :: The left-side bearing. */
|
|
|
467 |
/* */
|
|
|
468 |
/* bearingY :: The top-side bearing. */
|
|
|
469 |
/* */
|
|
|
470 |
/* advance :: The advance width or height. */
|
|
|
471 |
/* */
|
|
|
472 |
typedef struct TT_SBit_Small_Metrics_
|
|
|
473 |
{
|
|
|
474 |
FT_Byte height;
|
|
|
475 |
FT_Byte width;
|
|
|
476 |
|
|
|
477 |
FT_Char bearingX;
|
|
|
478 |
FT_Char bearingY;
|
|
|
479 |
FT_Byte advance;
|
|
|
480 |
|
|
|
481 |
} TT_SBit_SmallMetricsRec, *TT_SBit_SmallMetrics;
|
|
|
482 |
|
|
|
483 |
|
|
|
484 |
/*************************************************************************/
|
|
|
485 |
/* */
|
|
|
486 |
/* <Struct> */
|
|
|
487 |
/* TT_SBit_LineMetricsRec */
|
|
|
488 |
/* */
|
|
|
489 |
/* <Description> */
|
|
|
490 |
/* A structure used to describe the text line metrics of a given */
|
|
|
491 |
/* bitmap strike, for either a horizontal or vertical layout. */
|
|
|
492 |
/* */
|
|
|
493 |
/* <Fields> */
|
|
|
494 |
/* ascender :: The ascender in pixels. */
|
|
|
495 |
/* */
|
|
|
496 |
/* descender :: The descender in pixels. */
|
|
|
497 |
/* */
|
|
|
498 |
/* max_width :: The maximum glyph width in pixels. */
|
|
|
499 |
/* */
|
|
|
500 |
/* caret_slope_enumerator :: Rise of the caret slope, typically set */
|
|
|
501 |
/* to 1 for non-italic fonts. */
|
|
|
502 |
/* */
|
|
|
503 |
/* caret_slope_denominator :: Rise of the caret slope, typically set */
|
|
|
504 |
/* to 0 for non-italic fonts. */
|
|
|
505 |
/* */
|
|
|
506 |
/* caret_offset :: Offset in pixels to move the caret for */
|
|
|
507 |
/* proper positioning. */
|
|
|
508 |
/* */
|
|
|
509 |
/* min_origin_SB :: Minimum of horiBearingX (resp. */
|
|
|
510 |
/* vertBearingY). */
|
|
|
511 |
/* min_advance_SB :: Minimum of */
|
|
|
512 |
/* */
|
|
|
513 |
/* horizontal advance - */
|
|
|
514 |
/* ( horiBearingX + width ) */
|
|
|
515 |
/* */
|
|
|
516 |
/* resp. */
|
|
|
517 |
/* */
|
|
|
518 |
/* vertical advance - */
|
|
|
519 |
/* ( vertBearingY + height ) */
|
|
|
520 |
/* */
|
|
|
521 |
/* max_before_BL :: Maximum of horiBearingY (resp. */
|
|
|
522 |
/* vertBearingY). */
|
|
|
523 |
/* */
|
|
|
524 |
/* min_after_BL :: Minimum of */
|
|
|
525 |
/* */
|
|
|
526 |
/* horiBearingY - height */
|
|
|
527 |
/* */
|
|
|
528 |
/* resp. */
|
|
|
529 |
/* */
|
|
|
530 |
/* vertBearingX - width */
|
|
|
531 |
/* */
|
|
|
532 |
/* pads :: Unused (to make the size of the record */
|
|
|
533 |
/* a multiple of 32 bits. */
|
|
|
534 |
/* */
|
|
|
535 |
typedef struct TT_SBit_LineMetricsRec_
|
|
|
536 |
{
|
|
|
537 |
FT_Char ascender;
|
|
|
538 |
FT_Char descender;
|
|
|
539 |
FT_Byte max_width;
|
|
|
540 |
FT_Char caret_slope_numerator;
|
|
|
541 |
FT_Char caret_slope_denominator;
|
|
|
542 |
FT_Char caret_offset;
|
|
|
543 |
FT_Char min_origin_SB;
|
|
|
544 |
FT_Char min_advance_SB;
|
|
|
545 |
FT_Char max_before_BL;
|
|
|
546 |
FT_Char min_after_BL;
|
|
|
547 |
FT_Char pads[2];
|
|
|
548 |
|
|
|
549 |
} TT_SBit_LineMetricsRec, *TT_SBit_LineMetrics;
|
|
|
550 |
|
|
|
551 |
|
|
|
552 |
/*************************************************************************/
|
|
|
553 |
/* */
|
|
|
554 |
/* <Struct> */
|
|
|
555 |
/* TT_SBit_RangeRec */
|
|
|
556 |
/* */
|
|
|
557 |
/* <Description> */
|
|
|
558 |
/* A TrueType/OpenType subIndexTable as defined in the `EBLC' */
|
|
|
559 |
/* (Microsoft) or `bloc' (Apple) tables. */
|
|
|
560 |
/* */
|
|
|
561 |
/* <Fields> */
|
|
|
562 |
/* first_glyph :: The first glyph index in the range. */
|
|
|
563 |
/* */
|
|
|
564 |
/* last_glyph :: The last glyph index in the range. */
|
|
|
565 |
/* */
|
|
|
566 |
/* index_format :: The format of index table. Valid values are 1 */
|
|
|
567 |
/* to 5. */
|
|
|
568 |
/* */
|
|
|
569 |
/* image_format :: The format of `EBDT' image data. */
|
|
|
570 |
/* */
|
|
|
571 |
/* image_offset :: The offset to image data in `EBDT'. */
|
|
|
572 |
/* */
|
|
|
573 |
/* image_size :: For index formats 2 and 5. This is the size in */
|
|
|
574 |
/* bytes of each glyph bitmap. */
|
|
|
575 |
/* */
|
|
|
576 |
/* big_metrics :: For index formats 2 and 5. This is the big */
|
|
|
577 |
/* metrics for each glyph bitmap. */
|
|
|
578 |
/* */
|
|
|
579 |
/* num_glyphs :: For index formats 4 and 5. This is the number of */
|
|
|
580 |
/* glyphs in the code array. */
|
|
|
581 |
/* */
|
|
|
582 |
/* glyph_offsets :: For index formats 1 and 3. */
|
|
|
583 |
/* */
|
|
|
584 |
/* glyph_codes :: For index formats 4 and 5. */
|
|
|
585 |
/* */
|
|
|
586 |
/* table_offset :: The offset of the index table in the `EBLC' */
|
|
|
587 |
/* table. Only used during strike loading. */
|
|
|
588 |
/* */
|
|
|
589 |
typedef struct TT_SBit_RangeRec_
|
|
|
590 |
{
|
|
|
591 |
FT_UShort first_glyph;
|
|
|
592 |
FT_UShort last_glyph;
|
|
|
593 |
|
|
|
594 |
FT_UShort index_format;
|
|
|
595 |
FT_UShort image_format;
|
|
|
596 |
FT_ULong image_offset;
|
|
|
597 |
|
|
|
598 |
FT_ULong image_size;
|
|
|
599 |
TT_SBit_MetricsRec metrics;
|
|
|
600 |
FT_ULong num_glyphs;
|
|
|
601 |
|
|
|
602 |
FT_ULong* glyph_offsets;
|
|
|
603 |
FT_UShort* glyph_codes;
|
|
|
604 |
|
|
|
605 |
FT_ULong table_offset;
|
|
|
606 |
|
|
|
607 |
} TT_SBit_RangeRec, *TT_SBit_Range;
|
|
|
608 |
|
|
|
609 |
|
|
|
610 |
/*************************************************************************/
|
|
|
611 |
/* */
|
|
|
612 |
/* <Struct> */
|
|
|
613 |
/* TT_SBit_StrikeRec */
|
|
|
614 |
/* */
|
|
|
615 |
/* <Description> */
|
|
|
616 |
/* A structure used describe a given bitmap strike in the `EBLC' */
|
|
|
617 |
/* (Microsoft) or `bloc' (Apple) tables. */
|
|
|
618 |
/* */
|
|
|
619 |
/* <Fields> */
|
|
|
620 |
/* num_index_ranges :: The number of index ranges. */
|
|
|
621 |
/* */
|
|
|
622 |
/* index_ranges :: An array of glyph index ranges. */
|
|
|
623 |
/* */
|
|
|
624 |
/* color_ref :: Unused. `color_ref' is put in for future */
|
|
|
625 |
/* enhancements, but these fields are already */
|
|
|
626 |
/* in use by other platforms (e.g. Newton). */
|
|
|
627 |
/* For details, please see */
|
|
|
628 |
/* */
|
|
|
629 |
/* http://fonts.apple.com/ */
|
|
|
630 |
/* TTRefMan/RM06/Chap6bloc.html */
|
|
|
631 |
/* */
|
|
|
632 |
/* hori :: The line metrics for horizontal layouts. */
|
|
|
633 |
/* */
|
|
|
634 |
/* vert :: The line metrics for vertical layouts. */
|
|
|
635 |
/* */
|
|
|
636 |
/* start_glyph :: The lowest glyph index for this strike. */
|
|
|
637 |
/* */
|
|
|
638 |
/* end_glyph :: The highest glyph index for this strike. */
|
|
|
639 |
/* */
|
|
|
640 |
/* x_ppem :: The number of horizontal pixels per EM. */
|
|
|
641 |
/* */
|
|
|
642 |
/* y_ppem :: The number of vertical pixels per EM. */
|
|
|
643 |
/* */
|
|
|
644 |
/* bit_depth :: The bit depth. Valid values are 1, 2, 4, */
|
|
|
645 |
/* and 8. */
|
|
|
646 |
/* */
|
|
|
647 |
/* flags :: Is this a vertical or horizontal strike? For */
|
|
|
648 |
/* details, please see */
|
|
|
649 |
/* */
|
|
|
650 |
/* http://fonts.apple.com/ */
|
|
|
651 |
/* TTRefMan/RM06/Chap6bloc.html */
|
|
|
652 |
/* */
|
|
|
653 |
typedef struct TT_SBit_StrikeRec_
|
|
|
654 |
{
|
|
|
655 |
FT_Int num_ranges;
|
|
|
656 |
TT_SBit_Range sbit_ranges;
|
|
|
657 |
FT_ULong ranges_offset;
|
|
|
658 |
|
|
|
659 |
FT_ULong color_ref;
|
|
|
660 |
|
|
|
661 |
TT_SBit_LineMetricsRec hori;
|
|
|
662 |
TT_SBit_LineMetricsRec vert;
|
|
|
663 |
|
|
|
664 |
FT_UShort start_glyph;
|
|
|
665 |
FT_UShort end_glyph;
|
|
|
666 |
|
|
|
667 |
FT_Byte x_ppem;
|
|
|
668 |
FT_Byte y_ppem;
|
|
|
669 |
|
|
|
670 |
FT_Byte bit_depth;
|
|
|
671 |
FT_Char flags;
|
|
|
672 |
|
|
|
673 |
} TT_SBit_StrikeRec, *TT_SBit_Strike;
|
|
|
674 |
|
|
|
675 |
|
|
|
676 |
/*************************************************************************/
|
|
|
677 |
/* */
|
|
|
678 |
/* <Struct> */
|
|
|
679 |
/* TT_SBit_ComponentRec */
|
|
|
680 |
/* */
|
|
|
681 |
/* <Description> */
|
|
|
682 |
/* A simple structure to describe a compound sbit element. */
|
|
|
683 |
/* */
|
|
|
684 |
/* <Fields> */
|
|
|
685 |
/* glyph_code :: The element's glyph index. */
|
|
|
686 |
/* */
|
|
|
687 |
/* x_offset :: The element's left bearing. */
|
|
|
688 |
/* */
|
|
|
689 |
/* y_offset :: The element's top bearing. */
|
|
|
690 |
/* */
|
|
|
691 |
typedef struct TT_SBit_ComponentRec_
|
|
|
692 |
{
|
|
|
693 |
FT_UShort glyph_code;
|
|
|
694 |
FT_Char x_offset;
|
|
|
695 |
FT_Char y_offset;
|
|
|
696 |
|
|
|
697 |
} TT_SBit_ComponentRec, *TT_SBit_Component;
|
|
|
698 |
|
|
|
699 |
|
|
|
700 |
/*************************************************************************/
|
|
|
701 |
/* */
|
|
|
702 |
/* <Struct> */
|
|
|
703 |
/* TT_SBit_ScaleRec */
|
|
|
704 |
/* */
|
|
|
705 |
/* <Description> */
|
|
|
706 |
/* A structure used describe a given bitmap scaling table, as defined */
|
|
|
707 |
/* in the `EBSC' table. */
|
|
|
708 |
/* */
|
|
|
709 |
/* <Fields> */
|
|
|
710 |
/* hori :: The horizontal line metrics. */
|
|
|
711 |
/* */
|
|
|
712 |
/* vert :: The vertical line metrics. */
|
|
|
713 |
/* */
|
|
|
714 |
/* x_ppem :: The number of horizontal pixels per EM. */
|
|
|
715 |
/* */
|
|
|
716 |
/* y_ppem :: The number of vertical pixels per EM. */
|
|
|
717 |
/* */
|
|
|
718 |
/* x_ppem_substitute :: Substitution x_ppem value. */
|
|
|
719 |
/* */
|
|
|
720 |
/* y_ppem_substitute :: Substitution y_ppem value. */
|
|
|
721 |
/* */
|
|
|
722 |
typedef struct TT_SBit_ScaleRec_
|
|
|
723 |
{
|
|
|
724 |
TT_SBit_LineMetricsRec hori;
|
|
|
725 |
TT_SBit_LineMetricsRec vert;
|
|
|
726 |
|
|
|
727 |
FT_Byte x_ppem;
|
|
|
728 |
FT_Byte y_ppem;
|
|
|
729 |
|
|
|
730 |
FT_Byte x_ppem_substitute;
|
|
|
731 |
FT_Byte y_ppem_substitute;
|
|
|
732 |
|
|
|
733 |
} TT_SBit_ScaleRec, *TT_SBit_Scale;
|
|
|
734 |
|
|
|
735 |
|
|
|
736 |
/*************************************************************************/
|
|
|
737 |
/*************************************************************************/
|
|
|
738 |
/*************************************************************************/
|
|
|
739 |
/*** ***/
|
|
|
740 |
/*** ***/
|
|
|
741 |
/*** POSTSCRIPT GLYPH NAMES SUPPORT ***/
|
|
|
742 |
/*** ***/
|
|
|
743 |
/*** ***/
|
|
|
744 |
/*************************************************************************/
|
|
|
745 |
/*************************************************************************/
|
|
|
746 |
/*************************************************************************/
|
|
|
747 |
|
|
|
748 |
|
|
|
749 |
/*************************************************************************/
|
|
|
750 |
/* */
|
|
|
751 |
/* <Struct> */
|
|
|
752 |
/* TT_Post_20Rec */
|
|
|
753 |
/* */
|
|
|
754 |
/* <Description> */
|
|
|
755 |
/* Postscript names sub-table, format 2.0. Stores the PS name of */
|
|
|
756 |
/* each glyph in the font face. */
|
|
|
757 |
/* */
|
|
|
758 |
/* <Fields> */
|
|
|
759 |
/* num_glyphs :: The number of named glyphs in the table. */
|
|
|
760 |
/* */
|
|
|
761 |
/* num_names :: The number of PS names stored in the table. */
|
|
|
762 |
/* */
|
|
|
763 |
/* glyph_indices :: The indices of the glyphs in the names arrays. */
|
|
|
764 |
/* */
|
|
|
765 |
/* glyph_names :: The PS names not in Mac Encoding. */
|
|
|
766 |
/* */
|
|
|
767 |
typedef struct TT_Post_20Rec_
|
|
|
768 |
{
|
|
|
769 |
FT_UShort num_glyphs;
|
|
|
770 |
FT_UShort num_names;
|
|
|
771 |
FT_UShort* glyph_indices;
|
|
|
772 |
FT_Char** glyph_names;
|
|
|
773 |
|
|
|
774 |
} TT_Post_20Rec, *TT_Post_20;
|
|
|
775 |
|
|
|
776 |
|
|
|
777 |
/*************************************************************************/
|
|
|
778 |
/* */
|
|
|
779 |
/* <Struct> */
|
|
|
780 |
/* TT_Post_25Rec */
|
|
|
781 |
/* */
|
|
|
782 |
/* <Description> */
|
|
|
783 |
/* Postscript names sub-table, format 2.5. Stores the PS name of */
|
|
|
784 |
/* each glyph in the font face. */
|
|
|
785 |
/* */
|
|
|
786 |
/* <Fields> */
|
|
|
787 |
/* num_glyphs :: The number of glyphs in the table. */
|
|
|
788 |
/* */
|
|
|
789 |
/* offsets :: An array of signed offsets in a normal Mac */
|
|
|
790 |
/* Postscript name encoding. */
|
|
|
791 |
/* */
|
|
|
792 |
typedef struct TT_Post_25_
|
|
|
793 |
{
|
|
|
794 |
FT_UShort num_glyphs;
|
|
|
795 |
FT_Char* offsets;
|
|
|
796 |
|
|
|
797 |
} TT_Post_25Rec, *TT_Post_25;
|
|
|
798 |
|
|
|
799 |
|
|
|
800 |
/*************************************************************************/
|
|
|
801 |
/* */
|
|
|
802 |
/* <Struct> */
|
|
|
803 |
/* TT_Post_NamesRec */
|
|
|
804 |
/* */
|
|
|
805 |
/* <Description> */
|
|
|
806 |
/* Postscript names table, either format 2.0 or 2.5. */
|
|
|
807 |
/* */
|
|
|
808 |
/* <Fields> */
|
|
|
809 |
/* loaded :: A flag to indicate whether the PS names are loaded. */
|
|
|
810 |
/* */
|
|
|
811 |
/* format_20 :: The sub-table used for format 2.0. */
|
|
|
812 |
/* */
|
|
|
813 |
/* format_25 :: The sub-table used for format 2.5. */
|
|
|
814 |
/* */
|
|
|
815 |
typedef struct TT_Post_NamesRec_
|
|
|
816 |
{
|
|
|
817 |
FT_Bool loaded;
|
|
|
818 |
|
|
|
819 |
union
|
|
|
820 |
{
|
|
|
821 |
TT_Post_20Rec format_20;
|
|
|
822 |
TT_Post_25Rec format_25;
|
|
|
823 |
|
|
|
824 |
} names;
|
|
|
825 |
|
|
|
826 |
} TT_Post_NamesRec, *TT_Post_Names;
|
|
|
827 |
|
|
|
828 |
|
|
|
829 |
/*************************************************************************/
|
|
|
830 |
/*************************************************************************/
|
|
|
831 |
/*************************************************************************/
|
|
|
832 |
/*** ***/
|
|
|
833 |
/*** ***/
|
|
|
834 |
/*** GX VARIATION TABLE SUPPORT ***/
|
|
|
835 |
/*** ***/
|
|
|
836 |
/*** ***/
|
|
|
837 |
/*************************************************************************/
|
|
|
838 |
/*************************************************************************/
|
|
|
839 |
/*************************************************************************/
|
|
|
840 |
|
|
|
841 |
|
|
|
842 |
#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
|
|
|
843 |
typedef struct GX_BlendRec_ *GX_Blend;
|
|
|
844 |
#endif
|
|
|
845 |
|
|
|
846 |
/*************************************************************************/
|
|
|
847 |
/*************************************************************************/
|
|
|
848 |
/*************************************************************************/
|
|
|
849 |
/*** ***/
|
|
|
850 |
/*** ***/
|
|
|
851 |
/*** EMBEDDED BDF PROPERTIES TABLE SUPPORT ***/
|
|
|
852 |
/*** ***/
|
|
|
853 |
/*** ***/
|
|
|
854 |
/*************************************************************************/
|
|
|
855 |
/*************************************************************************/
|
|
|
856 |
/*************************************************************************/
|
|
|
857 |
|
|
|
858 |
/*
|
|
|
859 |
* These types are used to support a `BDF ' table that isn't part of the
|
|
|
860 |
* official TrueType specification. It is mainly used in SFNT-based
|
|
|
861 |
* bitmap fonts that were generated from a set of BDF fonts.
|
|
|
862 |
*
|
|
|
863 |
* The format of the table is as follows.
|
|
|
864 |
*
|
|
|
865 |
* USHORT version `BDF ' table version number, should be 0x0001.
|
|
|
866 |
* USHORT strikeCount Number of strikes (bitmap sizes) in this table.
|
|
|
867 |
* ULONG stringTable Offset (from start of BDF table) to string
|
|
|
868 |
* table.
|
|
|
869 |
*
|
|
|
870 |
* This is followed by an array of `strikeCount' descriptors, having the
|
|
|
871 |
* following format.
|
|
|
872 |
*
|
|
|
873 |
* USHORT ppem Vertical pixels per EM for this strike.
|
|
|
874 |
* USHORT numItems Number of items for this strike (properties and
|
|
|
875 |
* atoms). Maximum is 255.
|
|
|
876 |
*
|
|
|
877 |
* This array in turn is followed by `strikeCount' value sets. Each
|
|
|
878 |
* `value set' is an array of `numItems' items with the following format.
|
|
|
879 |
*
|
|
|
880 |
* ULONG item_name Offset in string table to item name.
|
|
|
881 |
* USHORT item_type The item type. Possible values are
|
|
|
882 |
* 0 => string (e.g., COMMENT)
|
|
|
883 |
* 1 => atom (e.g., FONT or even SIZE)
|
|
|
884 |
* 2 => int32
|
|
|
885 |
* 3 => uint32
|
|
|
886 |
* 0x10 => A flag to indicate a properties. This
|
|
|
887 |
* is ORed with the above values.
|
|
|
888 |
* ULONG item_value For strings => Offset into string table without
|
|
|
889 |
* the corresponding double quotes.
|
|
|
890 |
* For atoms => Offset into string table.
|
|
|
891 |
* For integers => Direct value.
|
|
|
892 |
*
|
|
|
893 |
* All strings in the string table consist of bytes and are
|
|
|
894 |
* zero-terminated.
|
|
|
895 |
*
|
|
|
896 |
*/
|
|
|
897 |
|
|
|
898 |
#ifdef TT_CONFIG_OPTION_BDF
|
|
|
899 |
|
|
|
900 |
typedef struct TT_BDFRec_
|
|
|
901 |
{
|
|
|
902 |
FT_Byte* table;
|
|
|
903 |
FT_Byte* table_end;
|
|
|
904 |
FT_Byte* strings;
|
|
|
905 |
FT_ULong strings_size;
|
|
|
906 |
FT_UInt num_strikes;
|
|
|
907 |
FT_Bool loaded;
|
|
|
908 |
|
|
|
909 |
} TT_BDFRec, *TT_BDF;
|
|
|
910 |
|
|
|
911 |
#endif /* TT_CONFIG_OPTION_BDF */
|
|
|
912 |
|
|
|
913 |
/*************************************************************************/
|
|
|
914 |
/*************************************************************************/
|
|
|
915 |
/*************************************************************************/
|
|
|
916 |
/*** ***/
|
|
|
917 |
/*** ***/
|
|
|
918 |
/*** ORIGINAL TT_FACE CLASS DEFINITION ***/
|
|
|
919 |
/*** ***/
|
|
|
920 |
/*** ***/
|
|
|
921 |
/*************************************************************************/
|
|
|
922 |
/*************************************************************************/
|
|
|
923 |
/*************************************************************************/
|
|
|
924 |
|
|
|
925 |
|
|
|
926 |
/*************************************************************************/
|
|
|
927 |
/* */
|
|
|
928 |
/* This structure/class is defined here because it is common to the */
|
|
|
929 |
/* following formats: TTF, OpenType-TT, and OpenType-CFF. */
|
|
|
930 |
/* */
|
|
|
931 |
/* Note, however, that the classes TT_Size and TT_GlyphSlot are not */
|
|
|
932 |
/* shared between font drivers, and are thus defined in `ttobjs.h'. */
|
|
|
933 |
/* */
|
|
|
934 |
/*************************************************************************/
|
|
|
935 |
|
|
|
936 |
|
|
|
937 |
/*************************************************************************/
|
|
|
938 |
/* */
|
|
|
939 |
/* <Type> */
|
|
|
940 |
/* TT_Face */
|
|
|
941 |
/* */
|
|
|
942 |
/* <Description> */
|
|
|
943 |
/* A handle to a TrueType face/font object. A TT_Face encapsulates */
|
|
|
944 |
/* the resolution and scaling independent parts of a TrueType font */
|
|
|
945 |
/* resource. */
|
|
|
946 |
/* */
|
|
|
947 |
/* <Note> */
|
|
|
948 |
/* The TT_Face structure is also used as a `parent class' for the */
|
|
|
949 |
/* OpenType-CFF class (T2_Face). */
|
|
|
950 |
/* */
|
|
|
951 |
typedef struct TT_FaceRec_* TT_Face;
|
|
|
952 |
|
|
|
953 |
|
|
|
954 |
/* a function type used for the truetype bytecode interpreter hooks */
|
|
|
955 |
typedef FT_Error
|
|
|
956 |
(*TT_Interpreter)( void* exec_context );
|
|
|
957 |
|
|
|
958 |
/* forward declaration */
|
|
|
959 |
typedef struct TT_LoaderRec_* TT_Loader;
|
|
|
960 |
|
|
|
961 |
|
|
|
962 |
/*************************************************************************/
|
|
|
963 |
/* */
|
|
|
964 |
/* <FuncType> */
|
|
|
965 |
/* TT_Loader_GotoTableFunc */
|
|
|
966 |
/* */
|
|
|
967 |
/* <Description> */
|
|
|
968 |
/* Seeks a stream to the start of a given TrueType table. */
|
|
|
969 |
/* */
|
|
|
970 |
/* <Input> */
|
|
|
971 |
/* face :: A handle to the target face object. */
|
|
|
972 |
/* */
|
|
|
973 |
/* tag :: A 4-byte tag used to name the table. */
|
|
|
974 |
/* */
|
|
|
975 |
/* stream :: The input stream. */
|
|
|
976 |
/* */
|
|
|
977 |
/* <Output> */
|
|
|
978 |
/* length :: The length of the table in bytes. Set to 0 if not */
|
|
|
979 |
/* needed. */
|
|
|
980 |
/* */
|
|
|
981 |
/* <Return> */
|
|
|
982 |
/* FreeType error code. 0 means success. */
|
|
|
983 |
/* */
|
|
|
984 |
/* <Note> */
|
|
|
985 |
/* The stream cursor must be at the font file's origin. */
|
|
|
986 |
/* */
|
|
|
987 |
typedef FT_Error
|
|
|
988 |
(*TT_Loader_GotoTableFunc)( TT_Face face,
|
|
|
989 |
FT_ULong tag,
|
|
|
990 |
FT_Stream stream,
|
|
|
991 |
FT_ULong* length );
|
|
|
992 |
|
|
|
993 |
|
|
|
994 |
/*************************************************************************/
|
|
|
995 |
/* */
|
|
|
996 |
/* <FuncType> */
|
|
|
997 |
/* TT_Loader_StartGlyphFunc */
|
|
|
998 |
/* */
|
|
|
999 |
/* <Description> */
|
|
|
1000 |
/* Seeks a stream to the start of a given glyph element, and opens a */
|
|
|
1001 |
/* frame for it. */
|
|
|
1002 |
/* */
|
|
|
1003 |
/* <Input> */
|
|
|
1004 |
/* loader :: The current TrueType glyph loader object. */
|
|
|
1005 |
/* */
|
|
|
1006 |
/* glyph index :: The index of the glyph to access. */
|
|
|
1007 |
/* */
|
|
|
1008 |
/* offset :: The offset of the glyph according to the */
|
|
|
1009 |
/* `locations' table. */
|
|
|
1010 |
/* */
|
|
|
1011 |
/* byte_count :: The size of the frame in bytes. */
|
|
|
1012 |
/* */
|
|
|
1013 |
/* <Return> */
|
|
|
1014 |
/* FreeType error code. 0 means success. */
|
|
|
1015 |
/* */
|
|
|
1016 |
/* <Note> */
|
|
|
1017 |
/* This function is normally equivalent to FT_STREAM_SEEK(offset) */
|
|
|
1018 |
/* followed by FT_FRAME_ENTER(byte_count) with the loader's stream, */
|
|
|
1019 |
/* but alternative formats (e.g. compressed ones) might use something */
|
|
|
1020 |
/* different. */
|
|
|
1021 |
/* */
|
|
|
1022 |
typedef FT_Error
|
|
|
1023 |
(*TT_Loader_StartGlyphFunc)( TT_Loader loader,
|
|
|
1024 |
FT_UInt glyph_index,
|
|
|
1025 |
FT_ULong offset,
|
|
|
1026 |
FT_UInt byte_count );
|
|
|
1027 |
|
|
|
1028 |
|
|
|
1029 |
/*************************************************************************/
|
|
|
1030 |
/* */
|
|
|
1031 |
/* <FuncType> */
|
|
|
1032 |
/* TT_Loader_ReadGlyphFunc */
|
|
|
1033 |
/* */
|
|
|
1034 |
/* <Description> */
|
|
|
1035 |
/* Reads one glyph element (its header, a simple glyph, or a */
|
|
|
1036 |
/* composite) from the loader's current stream frame. */
|
|
|
1037 |
/* */
|
|
|
1038 |
/* <Input> */
|
|
|
1039 |
/* loader :: The current TrueType glyph loader object. */
|
|
|
1040 |
/* */
|
|
|
1041 |
/* <Return> */
|
|
|
1042 |
/* FreeType error code. 0 means success. */
|
|
|
1043 |
/* */
|
|
|
1044 |
typedef FT_Error
|
|
|
1045 |
(*TT_Loader_ReadGlyphFunc)( TT_Loader loader );
|
|
|
1046 |
|
|
|
1047 |
|
|
|
1048 |
/*************************************************************************/
|
|
|
1049 |
/* */
|
|
|
1050 |
/* <FuncType> */
|
|
|
1051 |
/* TT_Loader_EndGlyphFunc */
|
|
|
1052 |
/* */
|
|
|
1053 |
/* <Description> */
|
|
|
1054 |
/* Closes the current loader stream frame for the glyph. */
|
|
|
1055 |
/* */
|
|
|
1056 |
/* <Input> */
|
|
|
1057 |
/* loader :: The current TrueType glyph loader object. */
|
|
|
1058 |
/* */
|
|
|
1059 |
typedef void
|
|
|
1060 |
(*TT_Loader_EndGlyphFunc)( TT_Loader loader );
|
|
|
1061 |
|
|
|
1062 |
|
|
|
1063 |
/*************************************************************************/
|
|
|
1064 |
/* */
|
|
|
1065 |
/* TrueType Face Type */
|
|
|
1066 |
/* */
|
|
|
1067 |
/* <Struct> */
|
|
|
1068 |
/* TT_Face */
|
|
|
1069 |
/* */
|
|
|
1070 |
/* <Description> */
|
|
|
1071 |
/* The TrueType face class. These objects model the resolution and */
|
|
|
1072 |
/* point-size independent data found in a TrueType font file. */
|
|
|
1073 |
/* */
|
|
|
1074 |
/* <Fields> */
|
|
|
1075 |
/* root :: The base FT_Face structure, managed by the */
|
|
|
1076 |
/* base layer. */
|
|
|
1077 |
/* */
|
|
|
1078 |
/* ttc_header :: The TrueType collection header, used when */
|
|
|
1079 |
/* the file is a `ttc' rather than a `ttf'. */
|
|
|
1080 |
/* For ordinary font files, the field */
|
|
|
1081 |
/* `ttc_header.count' is set to 0. */
|
|
|
1082 |
/* */
|
|
|
1083 |
/* format_tag :: The font format tag. */
|
|
|
1084 |
/* */
|
|
|
1085 |
/* num_tables :: The number of TrueType tables in this font */
|
|
|
1086 |
/* file. */
|
|
|
1087 |
/* */
|
|
|
1088 |
/* dir_tables :: The directory of TrueType tables for this */
|
|
|
1089 |
/* font file. */
|
|
|
1090 |
/* */
|
|
|
1091 |
/* header :: The font's font header (`head' table). */
|
|
|
1092 |
/* Read on font opening. */
|
|
|
1093 |
/* */
|
|
|
1094 |
/* horizontal :: The font's horizontal header (`hhea' */
|
|
|
1095 |
/* table). This field also contains the */
|
|
|
1096 |
/* associated horizontal metrics table */
|
|
|
1097 |
/* (`hmtx'). */
|
|
|
1098 |
/* */
|
|
|
1099 |
/* max_profile :: The font's maximum profile table. Read on */
|
|
|
1100 |
/* font opening. Note that some maximum */
|
|
|
1101 |
/* values cannot be taken directly from this */
|
|
|
1102 |
/* table. We thus define additional fields */
|
|
|
1103 |
/* below to hold the computed maxima. */
|
|
|
1104 |
/* */
|
|
|
1105 |
/* vertical_info :: A boolean which is set when the font file */
|
|
|
1106 |
/* contains vertical metrics. If not, the */
|
|
|
1107 |
/* value of the `vertical' field is */
|
|
|
1108 |
/* undefined. */
|
|
|
1109 |
/* */
|
|
|
1110 |
/* vertical :: The font's vertical header (`vhea' table). */
|
|
|
1111 |
/* This field also contains the associated */
|
|
|
1112 |
/* vertical metrics table (`vmtx'), if found. */
|
|
|
1113 |
/* IMPORTANT: The contents of this field is */
|
|
|
1114 |
/* undefined if the `verticalInfo' field is */
|
|
|
1115 |
/* unset. */
|
|
|
1116 |
/* */
|
|
|
1117 |
/* num_names :: The number of name records within this */
|
|
|
1118 |
/* TrueType font. */
|
|
|
1119 |
/* */
|
|
|
1120 |
/* name_table :: The table of name records (`name'). */
|
|
|
1121 |
/* */
|
|
|
1122 |
/* os2 :: The font's OS/2 table (`OS/2'). */
|
|
|
1123 |
/* */
|
|
|
1124 |
/* postscript :: The font's PostScript table (`post' */
|
|
|
1125 |
/* table). The PostScript glyph names are */
|
|
|
1126 |
/* not loaded by the driver on face opening. */
|
|
|
1127 |
/* See the `ttpost' module for more details. */
|
|
|
1128 |
/* */
|
|
|
1129 |
/* cmap_table :: Address of the face's `cmap' SFNT table */
|
|
|
1130 |
/* in memory (it's an extracted frame). */
|
|
|
1131 |
/* */
|
|
|
1132 |
/* cmap_size :: The size in bytes of the `cmap_table' */
|
|
|
1133 |
/* described above. */
|
|
|
1134 |
/* */
|
|
|
1135 |
/* goto_table :: A function called by each TrueType table */
|
|
|
1136 |
/* loader to position a stream's cursor to */
|
|
|
1137 |
/* the start of a given table according to */
|
|
|
1138 |
/* its tag. It defaults to TT_Goto_Face but */
|
|
|
1139 |
/* can be different for strange formats (e.g. */
|
|
|
1140 |
/* Type 42). */
|
|
|
1141 |
/* */
|
|
|
1142 |
/* access_glyph_frame :: A function used to access the frame of a */
|
|
|
1143 |
/* given glyph within the face's font file. */
|
|
|
1144 |
/* */
|
|
|
1145 |
/* forget_glyph_frame :: A function used to forget the frame of a */
|
|
|
1146 |
/* given glyph when all data has been loaded. */
|
|
|
1147 |
/* */
|
|
|
1148 |
/* read_glyph_header :: A function used to read a glyph header. */
|
|
|
1149 |
/* It must be called between an `access' and */
|
|
|
1150 |
/* `forget'. */
|
|
|
1151 |
/* */
|
|
|
1152 |
/* read_simple_glyph :: A function used to read a simple glyph. */
|
|
|
1153 |
/* It must be called after the header was */
|
|
|
1154 |
/* read, and before the `forget'. */
|
|
|
1155 |
/* */
|
|
|
1156 |
/* read_composite_glyph :: A function used to read a composite glyph. */
|
|
|
1157 |
/* It must be called after the header was */
|
|
|
1158 |
/* read, and before the `forget'. */
|
|
|
1159 |
/* */
|
|
|
1160 |
/* sfnt :: A pointer to the SFNT service. */
|
|
|
1161 |
/* */
|
|
|
1162 |
/* psnames :: A pointer to the PostScript names service. */
|
|
|
1163 |
/* */
|
|
|
1164 |
/* hdmx :: The face's horizontal device metrics */
|
|
|
1165 |
/* (`hdmx' table). This table is optional in */
|
|
|
1166 |
/* TrueType/OpenType fonts. */
|
|
|
1167 |
/* */
|
|
|
1168 |
/* gasp :: The grid-fitting and scaling properties */
|
|
|
1169 |
/* table (`gasp'). This table is optional in */
|
|
|
1170 |
/* TrueType/OpenType fonts. */
|
|
|
1171 |
/* */
|
|
|
1172 |
/* pclt :: The `pclt' SFNT table. */
|
|
|
1173 |
/* */
|
|
|
1174 |
/* num_sbit_strikes :: The number of sbit strikes, i.e., bitmap */
|
|
|
1175 |
/* sizes, embedded in this font. */
|
|
|
1176 |
/* */
|
|
|
1177 |
/* sbit_strikes :: An array of sbit strikes embedded in this */
|
|
|
1178 |
/* font. This table is optional in a */
|
|
|
1179 |
/* TrueType/OpenType font. */
|
|
|
1180 |
/* */
|
|
|
1181 |
/* num_sbit_scales :: The number of sbit scales for this font. */
|
|
|
1182 |
/* */
|
|
|
1183 |
/* sbit_scales :: Array of sbit scales embedded in this */
|
|
|
1184 |
/* font. This table is optional in a */
|
|
|
1185 |
/* TrueType/OpenType font. */
|
|
|
1186 |
/* */
|
|
|
1187 |
/* postscript_names :: A table used to store the Postscript names */
|
|
|
1188 |
/* of the glyphs for this font. See the */
|
|
|
1189 |
/* file `ttconfig.h' for comments on the */
|
|
|
1190 |
/* TT_CONFIG_OPTION_POSTSCRIPT_NAMES option. */
|
|
|
1191 |
/* */
|
|
|
1192 |
/* num_locations :: The number of glyph locations in this */
|
|
|
1193 |
/* TrueType file. This should be */
|
|
|
1194 |
/* identical to the number of glyphs. */
|
|
|
1195 |
/* Ignored for Type 2 fonts. */
|
|
|
1196 |
/* */
|
|
|
1197 |
/* glyph_locations :: An array of longs. These are offsets to */
|
|
|
1198 |
/* glyph data within the `glyf' table. */
|
|
|
1199 |
/* Ignored for Type 2 font faces. */
|
|
|
1200 |
/* */
|
|
|
1201 |
/* glyf_len :: The length of the `glyf' table. Needed */
|
|
|
1202 |
/* for malformed `loca' tables. */
|
|
|
1203 |
/* */
|
|
|
1204 |
/* font_program_size :: Size in bytecodes of the face's font */
|
|
|
1205 |
/* program. 0 if none defined. Ignored for */
|
|
|
1206 |
/* Type 2 fonts. */
|
|
|
1207 |
/* */
|
|
|
1208 |
/* font_program :: The face's font program (bytecode stream) */
|
|
|
1209 |
/* executed at load time, also used during */
|
|
|
1210 |
/* glyph rendering. Comes from the `fpgm' */
|
|
|
1211 |
/* table. Ignored for Type 2 font fonts. */
|
|
|
1212 |
/* */
|
|
|
1213 |
/* cvt_program_size :: The size in bytecodes of the face's cvt */
|
|
|
1214 |
/* program. Ignored for Type 2 fonts. */
|
|
|
1215 |
/* */
|
|
|
1216 |
/* cvt_program :: The face's cvt program (bytecode stream) */
|
|
|
1217 |
/* executed each time an instance/size is */
|
|
|
1218 |
/* changed/reset. Comes from the `prep' */
|
|
|
1219 |
/* table. Ignored for Type 2 fonts. */
|
|
|
1220 |
/* */
|
|
|
1221 |
/* cvt_size :: Size of the control value table (in */
|
|
|
1222 |
/* entries). Ignored for Type 2 fonts. */
|
|
|
1223 |
/* */
|
|
|
1224 |
/* cvt :: The face's original control value table. */
|
|
|
1225 |
/* Coordinates are expressed in unscaled font */
|
|
|
1226 |
/* units. Comes from the `cvt ' table. */
|
|
|
1227 |
/* Ignored for Type 2 fonts. */
|
|
|
1228 |
/* */
|
|
|
1229 |
/* num_kern_pairs :: The number of kerning pairs present in the */
|
|
|
1230 |
/* font file. The engine only loads the */
|
|
|
1231 |
/* first horizontal format 0 kern table it */
|
|
|
1232 |
/* finds in the font file. Ignored for */
|
|
|
1233 |
/* Type 2 fonts. */
|
|
|
1234 |
/* */
|
|
|
1235 |
/* kern_table_index :: The index of the kerning table in the font */
|
|
|
1236 |
/* kerning directory. Ignored for Type 2 */
|
|
|
1237 |
/* fonts. */
|
|
|
1238 |
/* */
|
|
|
1239 |
/* interpreter :: A pointer to the TrueType bytecode */
|
|
|
1240 |
/* interpreters field is also used to hook */
|
|
|
1241 |
/* the debugger in `ttdebug'. */
|
|
|
1242 |
/* */
|
|
|
1243 |
/* unpatented_hinting :: If true, use only unpatented methods in */
|
|
|
1244 |
/* the bytecode interpreter. */
|
|
|
1245 |
/* */
|
|
|
1246 |
/* doblend :: A boolean which is set if the font should */
|
|
|
1247 |
/* be blended (this is for GX var). */
|
|
|
1248 |
/* */
|
|
|
1249 |
/* blend :: Contains the data needed to control GX */
|
|
|
1250 |
/* variation tables (rather like Multiple */
|
|
|
1251 |
/* Master data). */
|
|
|
1252 |
/* */
|
|
|
1253 |
/* extra :: Reserved for third-party font drivers. */
|
|
|
1254 |
/* */
|
|
|
1255 |
/* postscript_name :: The PS name of the font. Used by the */
|
|
|
1256 |
/* postscript name service. */
|
|
|
1257 |
/* */
|
|
|
1258 |
typedef struct TT_FaceRec_
|
|
|
1259 |
{
|
|
|
1260 |
FT_FaceRec root;
|
|
|
1261 |
|
|
|
1262 |
TTC_HeaderRec ttc_header;
|
|
|
1263 |
|
|
|
1264 |
FT_ULong format_tag;
|
|
|
1265 |
FT_UShort num_tables;
|
|
|
1266 |
TT_Table dir_tables;
|
|
|
1267 |
|
|
|
1268 |
TT_Header header; /* TrueType header table */
|
|
|
1269 |
TT_HoriHeader horizontal; /* TrueType horizontal header */
|
|
|
1270 |
|
|
|
1271 |
TT_MaxProfile max_profile;
|
|
|
1272 |
#ifdef FT_CONFIG_OPTION_OLD_INTERNALS
|
|
|
1273 |
FT_ULong max_components; /* stubbed to 0 */
|
|
|
1274 |
#endif
|
|
|
1275 |
|
|
|
1276 |
FT_Bool vertical_info;
|
|
|
1277 |
TT_VertHeader vertical; /* TT Vertical header, if present */
|
|
|
1278 |
|
|
|
1279 |
FT_UShort num_names; /* number of name records */
|
|
|
1280 |
TT_NameTableRec name_table; /* name table */
|
|
|
1281 |
|
|
|
1282 |
TT_OS2 os2; /* TrueType OS/2 table */
|
|
|
1283 |
TT_Postscript postscript; /* TrueType Postscript table */
|
|
|
1284 |
|
|
|
1285 |
FT_Byte* cmap_table; /* extracted `cmap' table */
|
|
|
1286 |
FT_ULong cmap_size;
|
|
|
1287 |
|
|
|
1288 |
TT_Loader_GotoTableFunc goto_table;
|
|
|
1289 |
|
|
|
1290 |
TT_Loader_StartGlyphFunc access_glyph_frame;
|
|
|
1291 |
TT_Loader_EndGlyphFunc forget_glyph_frame;
|
|
|
1292 |
TT_Loader_ReadGlyphFunc read_glyph_header;
|
|
|
1293 |
TT_Loader_ReadGlyphFunc read_simple_glyph;
|
|
|
1294 |
TT_Loader_ReadGlyphFunc read_composite_glyph;
|
|
|
1295 |
|
|
|
1296 |
/* a typeless pointer to the SFNT_Interface table used to load */
|
|
|
1297 |
/* the basic TrueType tables in the face object */
|
|
|
1298 |
void* sfnt;
|
|
|
1299 |
|
|
|
1300 |
/* a typeless pointer to the FT_Service_PsCMapsRec table used to */
|
|
|
1301 |
/* handle glyph names <-> unicode & Mac values */
|
|
|
1302 |
void* psnames;
|
|
|
1303 |
|
|
|
1304 |
|
|
|
1305 |
/***********************************************************************/
|
|
|
1306 |
/* */
|
|
|
1307 |
/* Optional TrueType/OpenType tables */
|
|
|
1308 |
/* */
|
|
|
1309 |
/***********************************************************************/
|
|
|
1310 |
|
|
|
1311 |
/* horizontal device metrics */
|
|
|
1312 |
#ifdef FT_CONFIG_OPTION_OLD_INTERNALS
|
|
|
1313 |
TT_HdmxRec hdmx;
|
|
|
1314 |
#endif
|
|
|
1315 |
|
|
|
1316 |
/* grid-fitting and scaling table */
|
|
|
1317 |
TT_GaspRec gasp; /* the `gasp' table */
|
|
|
1318 |
|
|
|
1319 |
/* PCL 5 table */
|
|
|
1320 |
TT_PCLT pclt;
|
|
|
1321 |
|
|
|
1322 |
/* embedded bitmaps support */
|
|
|
1323 |
#ifdef FT_CONFIG_OPTION_OLD_INTERNALS
|
|
|
1324 |
FT_ULong num_sbit_strikes;
|
|
|
1325 |
TT_SBit_Strike sbit_strikes;
|
|
|
1326 |
#endif
|
|
|
1327 |
|
|
|
1328 |
FT_ULong num_sbit_scales;
|
|
|
1329 |
TT_SBit_Scale sbit_scales;
|
|
|
1330 |
|
|
|
1331 |
/* postscript names table */
|
|
|
1332 |
TT_Post_NamesRec postscript_names;
|
|
|
1333 |
|
|
|
1334 |
|
|
|
1335 |
/***********************************************************************/
|
|
|
1336 |
/* */
|
|
|
1337 |
/* TrueType-specific fields (ignored by the OTF-Type2 driver) */
|
|
|
1338 |
/* */
|
|
|
1339 |
/***********************************************************************/
|
|
|
1340 |
|
|
|
1341 |
/* the glyph locations */
|
|
|
1342 |
#ifdef FT_CONFIG_OPTION_OLD_INTERNALS
|
|
|
1343 |
FT_UShort num_locations_stub;
|
|
|
1344 |
FT_Long* glyph_locations_stub;
|
|
|
1345 |
#endif
|
|
|
1346 |
|
|
|
1347 |
/* the font program, if any */
|
|
|
1348 |
FT_ULong font_program_size;
|
|
|
1349 |
FT_Byte* font_program;
|
|
|
1350 |
|
|
|
1351 |
/* the cvt program, if any */
|
|
|
1352 |
FT_ULong cvt_program_size;
|
|
|
1353 |
FT_Byte* cvt_program;
|
|
|
1354 |
|
|
|
1355 |
/* the original, unscaled, control value table */
|
|
|
1356 |
FT_ULong cvt_size;
|
|
|
1357 |
FT_Short* cvt;
|
|
|
1358 |
|
|
|
1359 |
#ifdef FT_CONFIG_OPTION_OLD_INTERNALS
|
|
|
1360 |
/* the format 0 kerning table, if any */
|
|
|
1361 |
FT_Int num_kern_pairs;
|
|
|
1362 |
FT_Int kern_table_index;
|
|
|
1363 |
TT_Kern0_Pair kern_pairs;
|
|
|
1364 |
#endif
|
|
|
1365 |
|
|
|
1366 |
/* A pointer to the bytecode interpreter to use. This is also */
|
|
|
1367 |
/* used to hook the debugger for the `ttdebug' utility. */
|
|
|
1368 |
TT_Interpreter interpreter;
|
|
|
1369 |
|
|
|
1370 |
#ifdef TT_CONFIG_OPTION_UNPATENTED_HINTING
|
|
|
1371 |
/* Use unpatented hinting only. */
|
|
|
1372 |
FT_Bool unpatented_hinting;
|
|
|
1373 |
#endif
|
|
|
1374 |
|
|
|
1375 |
/***********************************************************************/
|
|
|
1376 |
/* */
|
|
|
1377 |
/* Other tables or fields. This is used by derivative formats like */
|
|
|
1378 |
/* OpenType. */
|
|
|
1379 |
/* */
|
|
|
1380 |
/***********************************************************************/
|
|
|
1381 |
|
|
|
1382 |
FT_Generic extra;
|
|
|
1383 |
|
|
|
1384 |
const char* postscript_name;
|
|
|
1385 |
|
|
|
1386 |
/* since version 2.1.8, but was originally placed after */
|
|
|
1387 |
/* `glyph_locations_stub' */
|
|
|
1388 |
FT_ULong glyf_len;
|
|
|
1389 |
|
|
|
1390 |
/* since version 2.1.8, but was originally placed before `extra' */
|
|
|
1391 |
#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
|
|
|
1392 |
FT_Bool doblend;
|
|
|
1393 |
GX_Blend blend;
|
|
|
1394 |
#endif
|
|
|
1395 |
|
|
|
1396 |
/* since version 2.2 */
|
|
|
1397 |
|
|
|
1398 |
FT_Byte* horz_metrics;
|
|
|
1399 |
FT_ULong horz_metrics_size;
|
|
|
1400 |
|
|
|
1401 |
FT_Byte* vert_metrics;
|
|
|
1402 |
FT_ULong vert_metrics_size;
|
|
|
1403 |
|
|
|
1404 |
FT_ULong num_locations; /* in broken TTF, gid > 0xFFFF */
|
|
|
1405 |
FT_Byte* glyph_locations;
|
|
|
1406 |
|
|
|
1407 |
FT_Byte* hdmx_table;
|
|
|
1408 |
FT_ULong hdmx_table_size;
|
|
|
1409 |
FT_UInt hdmx_record_count;
|
|
|
1410 |
FT_ULong hdmx_record_size;
|
|
|
1411 |
FT_Byte* hdmx_record_sizes;
|
|
|
1412 |
|
|
|
1413 |
FT_Byte* sbit_table;
|
|
|
1414 |
FT_ULong sbit_table_size;
|
|
|
1415 |
FT_UInt sbit_num_strikes;
|
|
|
1416 |
|
|
|
1417 |
FT_Byte* kern_table;
|
|
|
1418 |
FT_ULong kern_table_size;
|
|
|
1419 |
FT_UInt num_kern_tables;
|
|
|
1420 |
FT_UInt32 kern_avail_bits;
|
|
|
1421 |
FT_UInt32 kern_order_bits;
|
|
|
1422 |
|
|
|
1423 |
#ifdef TT_CONFIG_OPTION_BDF
|
|
|
1424 |
TT_BDFRec bdf;
|
|
|
1425 |
#endif /* TT_CONFIG_OPTION_BDF */
|
|
|
1426 |
|
|
|
1427 |
/* since 2.3.0 */
|
|
|
1428 |
FT_ULong horz_metrics_offset;
|
|
|
1429 |
FT_ULong vert_metrics_offset;
|
|
|
1430 |
|
|
|
1431 |
} TT_FaceRec;
|
|
|
1432 |
|
|
|
1433 |
|
|
|
1434 |
/*************************************************************************/
|
|
|
1435 |
/* */
|
|
|
1436 |
/* <Struct> */
|
|
|
1437 |
/* TT_GlyphZoneRec */
|
|
|
1438 |
/* */
|
|
|
1439 |
/* <Description> */
|
|
|
1440 |
/* A glyph zone is used to load, scale and hint glyph outline */
|
|
|
1441 |
/* coordinates. */
|
|
|
1442 |
/* */
|
|
|
1443 |
/* <Fields> */
|
|
|
1444 |
/* memory :: A handle to the memory manager. */
|
|
|
1445 |
/* */
|
|
|
1446 |
/* max_points :: The maximal size in points of the zone. */
|
|
|
1447 |
/* */
|
|
|
1448 |
/* max_contours :: Max size in links contours of the zone. */
|
|
|
1449 |
/* */
|
|
|
1450 |
/* n_points :: The current number of points in the zone. */
|
|
|
1451 |
/* */
|
|
|
1452 |
/* n_contours :: The current number of contours in the zone. */
|
|
|
1453 |
/* */
|
|
|
1454 |
/* org :: The original glyph coordinates (font */
|
|
|
1455 |
/* units/scaled). */
|
|
|
1456 |
/* */
|
|
|
1457 |
/* cur :: The current glyph coordinates (scaled/hinted). */
|
|
|
1458 |
/* */
|
|
|
1459 |
/* tags :: The point control tags. */
|
|
|
1460 |
/* */
|
|
|
1461 |
/* contours :: The contours end points. */
|
|
|
1462 |
/* */
|
|
|
1463 |
/* first_point :: Offset of the current subglyph's first point. */
|
|
|
1464 |
/* */
|
|
|
1465 |
typedef struct TT_GlyphZoneRec_
|
|
|
1466 |
{
|
|
|
1467 |
FT_Memory memory;
|
|
|
1468 |
FT_UShort max_points;
|
|
|
1469 |
FT_UShort max_contours;
|
|
|
1470 |
FT_UShort n_points; /* number of points in zone */
|
|
|
1471 |
FT_Short n_contours; /* number of contours */
|
|
|
1472 |
|
|
|
1473 |
FT_Vector* org; /* original point coordinates */
|
|
|
1474 |
FT_Vector* cur; /* current point coordinates */
|
|
|
1475 |
FT_Vector* orus; /* original (unscaled) point coordinates */
|
|
|
1476 |
|
|
|
1477 |
FT_Byte* tags; /* current touch flags */
|
|
|
1478 |
FT_UShort* contours; /* contour end points */
|
|
|
1479 |
|
|
|
1480 |
FT_UShort first_point; /* offset of first (#0) point */
|
|
|
1481 |
|
|
|
1482 |
} TT_GlyphZoneRec, *TT_GlyphZone;
|
|
|
1483 |
|
|
|
1484 |
|
|
|
1485 |
/* handle to execution context */
|
|
|
1486 |
typedef struct TT_ExecContextRec_* TT_ExecContext;
|
|
|
1487 |
|
|
|
1488 |
/* glyph loader structure */
|
|
|
1489 |
typedef struct TT_LoaderRec_
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1490 |
{
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1491 |
FT_Face face;
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1492 |
FT_Size size;
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1493 |
FT_GlyphSlot glyph;
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1494 |
FT_GlyphLoader gloader;
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1495 |
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1496 |
FT_ULong load_flags;
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1497 |
FT_UInt glyph_index;
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1498 |
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1499 |
FT_Stream stream;
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1500 |
FT_Int byte_len;
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1501 |
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1502 |
FT_Short n_contours;
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1503 |
FT_BBox bbox;
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1504 |
FT_Int left_bearing;
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1505 |
FT_Int advance;
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1506 |
FT_Int linear;
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1507 |
FT_Bool linear_def;
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1508 |
FT_Bool preserve_pps;
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1509 |
FT_Vector pp1;
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1510 |
FT_Vector pp2;
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1511 |
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1512 |
FT_ULong glyf_offset;
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1513 |
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1514 |
/* the zone where we load our glyphs */
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1515 |
TT_GlyphZoneRec base;
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1516 |
TT_GlyphZoneRec zone;
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1517 |
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1518 |
TT_ExecContext exec;
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1519 |
FT_Byte* instructions;
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1520 |
FT_ULong ins_pos;
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1521 |
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1522 |
/* for possible extensibility in other formats */
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1523 |
void* other;
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1524 |
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1525 |
/* since version 2.1.8 */
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1526 |
FT_Int top_bearing;
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1527 |
FT_Int vadvance;
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1528 |
FT_Vector pp3;
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1529 |
FT_Vector pp4;
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1530 |
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1531 |
/* since version 2.2.1 */
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1532 |
FT_Byte* cursor;
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1533 |
FT_Byte* limit;
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1534 |
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1535 |
} TT_LoaderRec;
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1536 |
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1537 |
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1538 |
FT_END_HEADER
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1539 |
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1540 |
#endif /* __TTTYPES_H__ */
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1541 |
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1542 |
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1543 |
/* END */
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