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Improve documentation of Unicode IVS handling.

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2.6.5
Werner Lemberg 12 years ago
parent 21332fb625
commit 3af607b07d
3 changed files with 15 additions and 18 deletions
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  1. 10
      include/freetype/freetype.h
  2. 20
      include/freetype/ttnameid.h
  3. 3
      include/freetype/tttables.h

10
include/freetype/freetype.h
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@ -3424,9 +3424,13 @@ FT_BEGIN_HEADER
/* code range for CJK characters. */
/* */
/* An IVS is registered and unique; for further details please refer */
/* to Unicode Technical Report #37, the Ideographic Variation */
/* Database. To date (October 2007), the character with the most */
/* variants is U+908A, having 8~such IVS. */
/* to Unicode Technical Standard #37, the Ideographic Variation */
/* Database: */
/* */
/* http://www.unicode.org/reports/tr37/ */
/* */
/* To date (November 2012), the character with the most variants is */
/* U+9089, having 31 such IVS. */
/* */
/* Adobe and MS decided to support IVS with a new cmap subtable */
/* (format~14). It is an odd subtable because it is not a mapping of */

20
include/freetype/ttnameid.h
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@ -4,7 +4,7 @@
/* */
/* TrueType name ID definitions (specification only). */
/* */
/* Copyright 1996-2002, 2003, 2004, 2006, 2007, 2008 by */
/* Copyright 1996-2004, 2006-2008, 2012 by */
/* David Turner, Robert Wilhelm, and Werner Lemberg. */
/* */
/* This file is part of the FreeType project, and may only be used, */
@ -316,11 +316,12 @@ FT_BEGIN_HEADER
/* */
/* Possible values of the language identifier field in the name records */
/* of the TTF `name' table if the `platform' identifier code is */
/* TT_PLATFORM_MACINTOSH. */
/* TT_PLATFORM_MACINTOSH. These values are also used as return values */
/* for function @FT_Get_CMap_Language_ID. */
/* */
/* The canonical source for the Apple assigned Language ID's is at */
/* */
/* http://fonts.apple.com/TTRefMan/RM06/Chap6name.html */
/* https://developer.apple.com/fonts/TTRefMan/RM06/Chap6name.html */
/* */
#define TT_MAC_LANGID_ENGLISH 0
#define TT_MAC_LANGID_FRENCH 1
@ -461,21 +462,10 @@ FT_BEGIN_HEADER
/* of the TTF `name' table if the `platform' identifier code is */
/* TT_PLATFORM_MICROSOFT. */
/* */
/* The canonical source for the MS assigned LCID's (seems to) be at */
/* The canonical source for the MS assigned LCIDs is */
/* */
/* http://www.microsoft.com/globaldev/reference/lcid-all.mspx */
/* */
/* It used to be at various places, among them */
/* */
/* http://www.microsoft.com/typography/OTSPEC/lcid-cp.txt */
/* http://www.microsoft.com/globaldev/reference/loclanghome.asp */
/* http://support.microsoft.com/support/kb/articles/Q224/8/04.ASP */
/* http://msdn.microsoft.com/library/en-us/passport25/ */
/* NET_Passport_VBScript_Documentation/Single_Sign_In/ */
/* Advanced_Single_Sign_In/Localization_and_LCIDs.asp */
/* */
/* Hopefully, it seems now that the Globaldev site prevails... */
/* (updated by Antoine, 2004-02-17) */
#define TT_MS_LANGID_ARABIC_GENERAL 0x0001
#define TT_MS_LANGID_ARABIC_SAUDI_ARABIA 0x0401

3
include/freetype/tttables.h
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@ -740,6 +740,9 @@ FT_BEGIN_HEADER
/* The language ID of `charmap'. If `charmap' doesn't belong to a */
/* TrueType/sfnt face, just return~0 as the default value. */
/* */
/* For a format~14 cmap (to access Unicode IVS), the return value is */
/* 0xFFFFFFFF. */
/* */
FT_EXPORT( FT_ULong )
FT_Get_CMap_Language_ID( FT_CharMap charmap );

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