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some modifications used to introduce the Type 1 AFM parser

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and psnames module
VER-2-0-4-PATCH
David Turner 25 years ago
parent 1a26888da3
commit 5dc8aba72b
3 changed files with 227 additions and 4 deletions
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  1. 214
      src/shared/psnames.h
  2. 13
      src/shared/t1types.h
  3. 4
      src/shared/tttypes.h

214
src/shared/psnames.h
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@ -0,0 +1,214 @@
/***************************************************************************/
/* */
/* psnames.h */
/* */
/* High-level interface for the "psnames" module (in charge of */
/* various functions related to Postscript glyph names conversion) */
/* */
/* Copyright 1996-2000 by */
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
/* */
/* This file is part of the FreeType project, and may only be used, */
/* modified, and distributed under the terms of the FreeType project */
/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
/* this file you indicate that you have read the license and */
/* understand and accept it fully. */
/* */
/***************************************************************************/
#ifndef PSNAMES_H
#define PSNAMES_H
#include <freetype.h>
/**************************************************************************
*
* <FuncType>
* PS_Unicode_Value_Func
*
* <Description>
* A function used to return the Unicode index corresponding to a
* given glyph name.
*
* <Input>
* glyph_name :: the glyph name
*
* <Return>
* The Unicode character index. The non-Unicode value 0xFFFF if the
* glyph name has no known Unicode meaning..
*
* <Note>
* This function is able to map several different glyph names to the
* same Unicode value, according to the rules defined in the Adobe
* Glyph List table.
*
* This function will not be compiled if the configuration macro
* FT_CONFIG_OPTION_ADOBE_GLYPH_LIST is undefined.
*
**************************************************************************/
typedef FT_ULong (*PS_Unicode_Value_Func)( const char* glyph_name );
/**************************************************************************
*
* <FuncType>
* PS_Unicode_Index_Func
*
* <Description>
* A function used to return the glyph index corresponding to
* a given unicode value.
*
* <Input>
* num_glyphs :: number of glyphs in face
* glyph_names :: array of glyph name pointers
* uncode :: unicode value.
*
* <Return>
* The glyph index. 0xFFFF is no glyph correspond to this Unicode
* value..
*
* <Note>
* This function is able to recognize several glyph names per
* unicode values, according to the Adobe Glyph List.
*
* This function will not be compiled if the configuration macro
* FT_CONFIG_OPTION_ADOBE_GLYPH_LIST is undefined.
*
**************************************************************************/
typedef FT_UInt (*PS_Unicode_Index_Func)( FT_UInt num_glyphs,
const char** glyph_names,
FT_ULong unicode );
/**************************************************************************
*
* <FuncType>
* PS_Macintosh_Name_Func
*
* <Description>
* A function used to return the glyph name corresponding to one
* Apple glyph name index.
*
* <Input>
* name_index :: index of the Mac name
*
* <Return>
* The glyph name, or 0 if the index is incorrect.
*
* <Note>
* This function will not be compiled if the configuration macro
* FT_CONFIG_OPTION_POSTSCRIPT_NAMES is undefined
*
**************************************************************************/
typedef const char* (*PS_Macintosh_Name_Func)( FT_UInt name_index );
typedef const char* (*PS_Adobe_Std_Strings_Func)( FT_UInt string_index );
/***************************************************************************
*
* <Struct>
* PS_Unicodes
*
* <Description>
* a simple table used to map Unicode values to glyph indices. It is
* built by the PS_Build_Unicodes table according to the glyphs present
* in a font file..
*
* <Fields>
* num_codes :: number of glyphs in the font that match a given Unicode
* value..
*
* unicodes :: array of unicode values, sorted in increasing order
* gindex :: array of glyph indices, corresponding to each unicode
*
* <Note>
* Use the function PS_Lookup_Unicode to retrieve the glyph index
* corresponding to a given Unicode character code.
*
***************************************************************************/
typedef struct PS_UniMap_
{
FT_UInt unicode;
FT_UInt glyph_index;
} PS_UniMap;
typedef struct PS_Unicodes_
{
FT_UInt num_maps;
PS_UniMap* maps;
} PS_Unicodes;
typedef FT_Error (*PS_Build_Unicodes_Func)( FT_Memory memory,
FT_UInt num_glyphs,
const char** glyph_names,
PS_Unicodes* unicodes );
typedef FT_UInt (*PS_Lookup_Unicode_Func)( PS_Unicodes* unicodes,
FT_UInt unicode );
/*************************************************************************
*
* <Struct>
* PSNames_Interface
*
* <Description>
* this structure holds pointers to the functions used to load and
* free the basic tables that are required in a `sfnt' font file.
*
* <Field>
* unicode_value :: a function used to convert a glyph name into
* a Unicode character code
*
* unicode_index :: a function used to return the glyph index
* corresponding to a given Unicode character
*
* macintosh_name :: a function used to return the standard Apple
* glyph Postscript name corresponding to a given
* string index (used by the TrueType "post" table)
*
* adobe_std_strings :: a function that returns a pointer to a given
* Adobe Standard Strings given a SID
*
* adobe_std_encoding :: a table of 256 unsigned shorts that maps
* character codes in the Adobe Standard Encoding
* to SIDs
*
* adobe_expert_encoding :: a table of 256 unsigned shorts that maps
* character codes in the Adobe Expert Encoding
* to SIDs.
*
* <Note>
* The 'unicode_value' and 'unicode_index' will be set to 0 if the
* configuration macro FT_CONFIG_OPTION_ADOBE_GLYPH_LIST is undefined
*
* The 'macintosh_name' will be set to 0 if the configuration macro
* FT_CONFIG_OPTION_POSTSCRIPT_NAMES is undefined
*
*************************************************************************/
typedef struct PSNames_Interface_
{
PS_Unicode_Value_Func unicode_value;
PS_Build_Unicodes_Func build_unicodes;
PS_Lookup_Unicode_Func lookup_unicode;
PS_Macintosh_Name_Func macintosh_name;
PS_Adobe_Std_Strings_Func adobe_std_strings;
const unsigned short* adobe_std_encoding;
const unsigned short* adobe_expert_encoding;
} PSNames_Interface;
#endif /* PSNAMES_H */
/* END */

13
src/shared/t1types.h
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@ -22,7 +22,7 @@
#define T1TYPES_H
#include <freetype.h>
#include <psnames.h>
#ifdef __cplusplus
extern "C" {
@ -290,7 +290,7 @@
T1_Int code_first;
T1_Int code_last;
T1_Short* char_index;
T1_UShort* char_index;
T1_String** char_name;
} T1_Encoding;
@ -427,8 +427,13 @@
typedef struct T1_FaceRec_
{
FT_FaceRec root;
T1_Font type1;
FT_FaceRec root;
T1_Font type1;
void* psnames;
void* afm_data;
FT_CharMapRec charmaprecs[2];
FT_CharMap charmaps[2];
PS_Unicodes unicode_map;
} T1_FaceRec;

4
src/shared/tttypes.h
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@ -1999,6 +1999,10 @@
/* the basic TrueType tables in the face object */
void* sfnt;
/* a typeless pointer to the PSNames_Interface table used to */
/* handle glyph names <-> unicode & Mac values */
void* psnames;
/***********************************************************************/
/* */
/* Optional TrueType/OpenType tables */

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