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freetype2
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Code Issues 4 Releases Wiki Activity

Add `TT_CONFIG_OPTION_NO_BORING_EXPANSION` configuration macro. 

This gives users a possibility to deactivate new features not (yet) in the
OpenType standard.

* include/freetype/config/ftoption.h, devel/ftoption.h
(TT_CONFIG_OPTION_NO_BORING_EXPANSION): New macro.

* src/truetype/ttgxvar.c (ft_var_load_avar): Use it to disable 'avar'
version 2.0 support.
This commit is contained in:
Dominik Röttsches 2022-11-07 10:52:33 +02:00 committed by Werner Lemberg
parent e97cb9e8da
commit ba4bd5b994
3 changed files with 49 additions and 2 deletions
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18
devel/ftoption.h
View File

@ -739,6 +739,24 @@ FT_BEGIN_HEADER
#define TT_CONFIG_OPTION_GX_VAR_SUPPORT
/**************************************************************************
*
* Define `TT_CONFIG_OPTION_NO_BORING_EXPANSION` if you want to exclude
* support for 'boring' OpenType specification expansions.
*
* https://github.com/harfbuzz/boring-expansion-spec
*
* Right now, the following features are covered:
*
* - 'avar' version 2.0
*
* Most likely, this is a temporary configuration option to be removed in
* the near future, since it is assumed that eventually those features are
* added to the OpenType standard.
*/
/* #define TT_CONFIG_OPTION_NO_BORING_EXPANSION */
/**************************************************************************
*
* Define `TT_CONFIG_OPTION_BDF` if you want to include support for an

18
include/freetype/config/ftoption.h
View File

@ -739,6 +739,24 @@ FT_BEGIN_HEADER
#define TT_CONFIG_OPTION_GX_VAR_SUPPORT
/**************************************************************************
*
* Define `TT_CONFIG_OPTION_NO_BORING_EXPANSION` if you want to exclude
* support for 'boring' OpenType specification expansions.
*
* https://github.com/harfbuzz/boring-expansion-spec
*
* Right now, the following features are covered:
*
* - 'avar' version 2.0
*
* Most likely, this is a temporary configuration option to be removed in
* the near future, since it is assumed that eventually those features are
* added to the OpenType standard.
*/
/* #define TT_CONFIG_OPTION_NO_BORING_EXPANSION */
/**************************************************************************
*
* Define `TT_CONFIG_OPTION_BDF` if you want to include support for an

15
src/truetype/ttgxvar.c
View File

@ -364,10 +364,13 @@
FT_Long version;
FT_Long axisCount;
FT_ULong table_offset;
FT_ULong table_len;
#ifndef TT_CONFIG_OPTION_NO_BORING_EXPANSION
FT_ULong table_offset;
FT_ULong store_offset;
FT_ULong axisMap_offset;
#endif
FT_TRACE2(( "AVAR " ));
@ -380,7 +383,9 @@
return;
}
#ifndef TT_CONFIG_OPTION_NO_BORING_EXPANSION
table_offset = FT_STREAM_POS();
#endif
if ( FT_FRAME_ENTER( table_len ) )
return;
@ -388,7 +393,11 @@
version = FT_GET_LONG();
axisCount = FT_GET_LONG();
if ( version != 0x00010000L && version != 0x00020000L )
if ( version != 0x00010000L
#ifndef TT_CONFIG_OPTION_NO_BORING_EXPANSION
&& version != 0x00020000L
#endif
)
{
FT_TRACE2(( "bad table version\n" ));
goto Exit;
@ -445,6 +454,7 @@
FT_TRACE5(( "\n" ));
}
#ifndef TT_CONFIG_OPTION_NO_BORING_EXPANSION
if ( version < 0x00020000L )
goto Exit;
@ -472,6 +482,7 @@
if ( error )
goto Exit;
}
#endif
Exit: