* include/freetype/config/ftoption.h: clarify documentation regarding
unpatented hinting * include/freetype/freetype.h, src/base/ftpatent.c, src/truetype/ttdriver.c, include/freetype/internal/services/svttglyf.h, modules.cfg,: include/freetype/internal/ftserv.h,: Fonts without a cmap must be handled correctly by FreeType (anything Adding the FT_Face_CheckTrueTypePatents API to FT_FREETYPE_H, it is implemented by the optional src/base/ftpatent.c
This commit is contained in:
David Turner
parent
33db39e292
commit
84c6f88117
16
ChangeLog
16
ChangeLog
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@ -1,6 +1,18 @@
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2007-06-10 David Turner <david@freetype.org>
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* include/freetype/config/ftoption.h: clarify documentation regarding
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unpatented hinting
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* include/freetype/freetype.h, src/base/ftpatent.c, src/truetype/ttdriver.c,
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include/freetype/internal/services/svttglyf.h, modules.cfg,:
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include/freetype/internal/ftserv.h,:
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Fonts without a cmap must be handled correctly by FreeType (anything
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Adding the FT_Face_CheckTrueTypePatents API to FT_FREETYPE_H, it is
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implemented by the optional src/base/ftpatent.c
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2007-06-08 Werner Lemberg <wl@gnu.org>
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* src/sfnt/sfobjs.c (sfnt_load_face): Undo change from 2007-04-28.
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* src/sfnt/sfobjs.c (sfnt_load_face): Undo change from 2007-04-28.
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Fonts without a cmap must be handled correctly by FreeType (anything
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else would be a bug).
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@ -399,7 +411,7 @@
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computation.
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* src/autofit/afloader.c (af_loader_load_g): In the case of
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monospaced fonts, always set `rsb_delta' and `lsb_delta' to 0.
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monospaced fonts, always set `rsb_delta' and `lsb_delta' to 0.
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Otherwise code that uses them will most certainly ruin the fixed
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advance property.
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@ -463,12 +463,26 @@ FT_BEGIN_HEADER
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/*************************************************************************/
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/* */
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/* Define TT_CONFIG_OPTION_UNPATENTED_HINTING (in addition to */
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/* TT_CONFIG_OPTION_BYTECODE_INTERPRETER) to compile the unpatented */
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/* work-around hinting system. Note that for the moment, the algorithm */
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/* is only used when selected at runtime through the parameter tag */
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/* FT_PARAM_TAG_UNPATENTED_HINTING; or when the debug hook */
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/* FT_DEBUG_HOOK_UNPATENTED_HINTING is globally activated. */
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/* The TT_CONFIG_OPTION_UNPATENTED_HINTING macro is *ignored* if you */
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/* have defined TT_CONFIG_OPTION_BYTECODE_INTERPRETER. If not, it will */
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/* compile a special work-around TrueType bytecode interpreter that */
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/* doesn't implement any of the patented opcodes/algorithms. */
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/* */
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/* this is only useful for a small number of font files (mostly Asian) */
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/* that require bytecode interpretation to properly load glyphs. For all */
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/* other fonts, this will produce unpleasant results. */
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/* */
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/* for this reason, the unpatented interpreter is never used by to load */
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/* glyphs from TrueType fonts, unless one of the following happens: */
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/* */
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/* - the unpatented interpreter is explicitely activated by the */
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/* user through the FT_PARAM_TAG_UNPATENTED_HINTING parameter tag */
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/* when opening the FT_Face */
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/* */
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/* - FreeType detects that the FT_Face corresponds to one of the */
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/* 'trick' fonts (e.g. Mingliu) it knows about. The font engine */
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/* contains a hard-coded list of font names and other matching */
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/* parameters. */
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/* */
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#define TT_CONFIG_OPTION_UNPATENTED_HINTING
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@ -3368,6 +3368,31 @@ FT_BEGIN_HEADER
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FT_Int *aminor,
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FT_Int *apatch );
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/*************************************************************************/
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/* */
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/* <Function> */
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/* FT_Face_CheckTrueTypePatents */
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/* */
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/* <Description> */
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/* Parses the whole content of a TrueType font file and returns */
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/* true if it uses any of the patented opcodes. this is only useful */
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/* if you want to be able to use the unpatented hinter with */
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/* fonts that do *not* use these opcodes. */
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/* */
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/* note that this function parses *all* glyph instructions in the */
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/* font file, and may be *slow* */
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/* */
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/* <Input> */
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/* face :: a face handle */
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/* */
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/* <Return> */
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/* TRUE if this is a TrueType font that uses one of the patented */
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/* opcodes. FALSE otherwise */
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/* */
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FT_EXPORT( FT_Bool )
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FT_Face_CheckTrueTypePatents( FT_Face face );
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/* */
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@ -315,6 +315,7 @@ FT_BEGIN_HEADER
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#define FT_SERVICE_TT_CMAP_H <freetype/internal/services/svttcmap.h>
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#define FT_SERVICE_WINFNT_H <freetype/internal/services/svwinfnt.h>
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#define FT_SERVICE_XFREE86_NAME_H <freetype/internal/services/svxf86nm.h>
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#define FT_SERVICE_TRUETYPE_GLYF_H <freetype/internal/services/svttglyf.h>
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/* */
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@ -0,0 +1,48 @@
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/***************************************************************************/
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/* */
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/* svsttglyf.h */
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/* */
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/* The FreeType TrueType glyph service. */
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/* */
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/* Copyright 2007 by David Turner. */
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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 __SVTTGLYF_H__
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#define __SVTTGLYF_H__
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#include FT_INTERNAL_SERVICE_H
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#include FT_TRUETYPE_TABLES_H
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FT_BEGIN_HEADER
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#define FT_SERVICE_ID_TT_GLYF "tt-glyf"
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typedef FT_ULong
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(*TT_Glyf_GetLocationFunc)( FT_Face face,
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FT_UInt gindex,
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FT_ULong *psize );
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FT_DEFINE_SERVICE( TTGlyf )
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{
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TT_Glyf_GetLocationFunc get_location;
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};
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/* */
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FT_END_HEADER
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#endif /* __SVTTCMAP_H__ */
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/* END */
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@ -220,6 +220,11 @@ BASE_EXTENSIONS += ftlcdfil.c
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# See include/freetype/ftgasp.h for the API.
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BASE_EXTENSIONS += ftgasp.c
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# Support for FT_Face_CheckTrueTypePatents
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#
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# See include/freetype.h for the API.
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BASE_EXTENSIONS += ftpatent.c
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####
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#### The components `ftsystem.c' (for memory allocation and stream I/O
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#### management) and `ftdebug.c' (for emitting debug messages to the user)
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@ -34,7 +34,7 @@ SubDir FT2_TOP $(FT2_SRC_DIR) base ;
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local _sources = system init glyph mm bdf
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bbox debug xf86 type1 pfr
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stroke winfnt otval bitmap synth
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gxval lcdfil gasp
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gxval lcdfil gasp patent
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;
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Library $(FT2_LIB) : ft$(_sources).c ;
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#endif
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#include FT_SERVICE_TRUETYPE_ENGINE_H
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#include FT_SERVICE_TRUETYPE_GLYF_H
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#include "ttdriver.h"
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#include "ttgload.h"
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#include "ttpload.h"
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#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
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#include "ttgxvar.h"
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#endif /* TT_USE_BYTECODE_INTERPRETER */
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};
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static const FT_Service_TTGlyfRec tt_service_truetype_glyf =
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{
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(TT_Glyf_GetLocationFunc) tt_face_get_location
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};
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static const FT_ServiceDescRec tt_services[] =
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{
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{ FT_SERVICE_ID_XF86_NAME, FT_XF86_FORMAT_TRUETYPE },
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{ FT_SERVICE_ID_MULTI_MASTERS, &tt_service_gx_multi_masters },
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#endif
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{ FT_SERVICE_ID_TRUETYPE_ENGINE, &tt_service_truetype_engine },
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{ FT_SERVICE_ID_TT_GLYF, &tt_service_truetype_glyf },
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{ NULL, NULL }
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};
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