278 lines
7.8 KiB
C
278 lines
7.8 KiB
C
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/****************************************************************************
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*
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* ftwinfnt.h
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*
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* FreeType API for accessing Windows fnt-specific data.
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*
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* Copyright (C) 2003-2020 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 FTWINFNT_H_
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#define FTWINFNT_H_
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#include <ft2build.h>
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#include FT_FREETYPE_H
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#ifdef FREETYPE_H
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#error "freetype.h of FreeType 1 has been loaded!"
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#error "Please fix the directory search order for header files"
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#error "so that freetype.h of FreeType 2 is found first."
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#endif
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FT_BEGIN_HEADER
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/**************************************************************************
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*
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* @section:
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* winfnt_fonts
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*
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* @title:
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* Window FNT Files
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*
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* @abstract:
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* Windows FNT-specific API.
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*
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* @description:
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* This section contains the declaration of Windows FNT-specific
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* functions.
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*
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*/
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/**************************************************************************
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*
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* @enum:
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* FT_WinFNT_ID_XXX
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*
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* @description:
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* A list of valid values for the `charset` byte in @FT_WinFNT_HeaderRec.
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* Exact mapping tables for the various 'cpXXXX' encodings (except for
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* 'cp1361') can be found at 'ftp://ftp.unicode.org/Public/' in the
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* `MAPPINGS/VENDORS/MICSFT/WINDOWS` subdirectory. 'cp1361' is roughly a
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* superset of `MAPPINGS/OBSOLETE/EASTASIA/KSC/JOHAB.TXT`.
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*
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* @values:
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* FT_WinFNT_ID_DEFAULT ::
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* This is used for font enumeration and font creation as a 'don't
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* care' value. Valid font files don't contain this value. When
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* querying for information about the character set of the font that is
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* currently selected into a specified device context, this return
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* value (of the related Windows API) simply denotes failure.
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*
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* FT_WinFNT_ID_SYMBOL ::
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* There is no known mapping table available.
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*
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* FT_WinFNT_ID_MAC ::
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* Mac Roman encoding.
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*
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* FT_WinFNT_ID_OEM ::
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* From Michael Poettgen <michael@poettgen.de>:
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*
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* The 'Windows Font Mapping' article says that `FT_WinFNT_ID_OEM` is
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* used for the charset of vector fonts, like `modern.fon`,
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* `roman.fon`, and `script.fon` on Windows.
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*
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* The 'CreateFont' documentation says: The `FT_WinFNT_ID_OEM` value
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* specifies a character set that is operating-system dependent.
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*
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* The 'IFIMETRICS' documentation from the 'Windows Driver Development
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* Kit' says: This font supports an OEM-specific character set. The
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* OEM character set is system dependent.
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*
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* In general OEM, as opposed to ANSI (i.e., 'cp1252'), denotes the
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* second default codepage that most international versions of Windows
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* have. It is one of the OEM codepages from
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*
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* https://docs.microsoft.com/en-us/windows/desktop/intl/code-page-identifiers
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* ,
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*
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* and is used for the 'DOS boxes', to support legacy applications. A
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* German Windows version for example usually uses ANSI codepage 1252
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* and OEM codepage 850.
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*
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* FT_WinFNT_ID_CP874 ::
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* A superset of Thai TIS 620 and ISO 8859-11.
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*
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* FT_WinFNT_ID_CP932 ::
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* A superset of Japanese Shift-JIS (with minor deviations).
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*
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* FT_WinFNT_ID_CP936 ::
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* A superset of simplified Chinese GB 2312-1980 (with different
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* ordering and minor deviations).
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*
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* FT_WinFNT_ID_CP949 ::
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* A superset of Korean Hangul KS~C 5601-1987 (with different ordering
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* and minor deviations).
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*
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* FT_WinFNT_ID_CP950 ::
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* A superset of traditional Chinese Big~5 ETen (with different
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* ordering and minor deviations).
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*
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* FT_WinFNT_ID_CP1250 ::
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* A superset of East European ISO 8859-2 (with slightly different
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* ordering).
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*
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* FT_WinFNT_ID_CP1251 ::
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* A superset of Russian ISO 8859-5 (with different ordering).
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*
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* FT_WinFNT_ID_CP1252 ::
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* ANSI encoding. A superset of ISO 8859-1.
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*
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* FT_WinFNT_ID_CP1253 ::
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* A superset of Greek ISO 8859-7 (with minor modifications).
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*
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* FT_WinFNT_ID_CP1254 ::
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* A superset of Turkish ISO 8859-9.
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*
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* FT_WinFNT_ID_CP1255 ::
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* A superset of Hebrew ISO 8859-8 (with some modifications).
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*
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* FT_WinFNT_ID_CP1256 ::
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* A superset of Arabic ISO 8859-6 (with different ordering).
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*
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* FT_WinFNT_ID_CP1257 ::
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* A superset of Baltic ISO 8859-13 (with some deviations).
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*
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* FT_WinFNT_ID_CP1258 ::
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* For Vietnamese. This encoding doesn't cover all necessary
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* characters.
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*
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* FT_WinFNT_ID_CP1361 ::
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* Korean (Johab).
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*/
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#define FT_WinFNT_ID_CP1252 0
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#define FT_WinFNT_ID_DEFAULT 1
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#define FT_WinFNT_ID_SYMBOL 2
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#define FT_WinFNT_ID_MAC 77
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#define FT_WinFNT_ID_CP932 128
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#define FT_WinFNT_ID_CP949 129
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#define FT_WinFNT_ID_CP1361 130
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#define FT_WinFNT_ID_CP936 134
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#define FT_WinFNT_ID_CP950 136
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#define FT_WinFNT_ID_CP1253 161
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#define FT_WinFNT_ID_CP1254 162
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#define FT_WinFNT_ID_CP1258 163
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#define FT_WinFNT_ID_CP1255 177
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#define FT_WinFNT_ID_CP1256 178
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#define FT_WinFNT_ID_CP1257 186
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#define FT_WinFNT_ID_CP1251 204
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#define FT_WinFNT_ID_CP874 222
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#define FT_WinFNT_ID_CP1250 238
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#define FT_WinFNT_ID_OEM 255
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/**************************************************************************
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*
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* @struct:
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* FT_WinFNT_HeaderRec
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*
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* @description:
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* Windows FNT Header info.
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*/
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typedef struct FT_WinFNT_HeaderRec_
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{
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FT_UShort version;
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FT_ULong file_size;
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FT_Byte copyright[60];
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FT_UShort file_type;
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FT_UShort nominal_point_size;
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FT_UShort vertical_resolution;
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FT_UShort horizontal_resolution;
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FT_UShort ascent;
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FT_UShort internal_leading;
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FT_UShort external_leading;
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FT_Byte italic;
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FT_Byte underline;
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FT_Byte strike_out;
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FT_UShort weight;
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FT_Byte charset;
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FT_UShort pixel_width;
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FT_UShort pixel_height;
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FT_Byte pitch_and_family;
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FT_UShort avg_width;
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FT_UShort max_width;
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FT_Byte first_char;
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FT_Byte last_char;
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FT_Byte default_char;
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FT_Byte break_char;
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FT_UShort bytes_per_row;
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FT_ULong device_offset;
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FT_ULong face_name_offset;
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FT_ULong bits_pointer;
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FT_ULong bits_offset;
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FT_Byte reserved;
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FT_ULong flags;
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FT_UShort A_space;
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FT_UShort B_space;
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FT_UShort C_space;
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FT_UShort color_table_offset;
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FT_ULong reserved1[4];
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} FT_WinFNT_HeaderRec;
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/**************************************************************************
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*
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* @struct:
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* FT_WinFNT_Header
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*
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* @description:
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* A handle to an @FT_WinFNT_HeaderRec structure.
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*/
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typedef struct FT_WinFNT_HeaderRec_* FT_WinFNT_Header;
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/**************************************************************************
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*
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* @function:
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* FT_Get_WinFNT_Header
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*
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* @description:
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* Retrieve a Windows FNT font info header.
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*
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* @input:
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* face ::
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* A handle to the input face.
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*
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* @output:
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* aheader ::
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* The WinFNT header.
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*
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* @return:
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* FreeType error code. 0~means success.
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*
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* @note:
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* This function only works with Windows FNT faces, returning an error
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* otherwise.
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*/
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FT_EXPORT( FT_Error )
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FT_Get_WinFNT_Header( FT_Face face,
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FT_WinFNT_HeaderRec *aheader );
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/* */
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FT_END_HEADER
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#endif /* FTWINFNT_H_ */
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/* END */
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/* Local Variables: */
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/* coding: utf-8 */
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/* End: */
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