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Add `FT_FACE_FLAG_SBIX` and `FT_HAS_SBIX`. 

Fonts with 'sbix' tables need special handling by the application.

* include/freetype/freetype.h (FT_FACE_FLAG_SBIX, FT_HAS_SBIX): New macros.

* src/sfnt/sfobjs.c (sfnt_load_face): Set `FT_FACE_FLAG_SBIX` if 'sbix'
table is present.
This commit is contained in:
Werner Lemberg 2022-02-09 07:31:56 +01:00
parent 06727a5257
commit 907715a6a2
2 changed files with 30 additions and 0 deletions
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25
include/freetype/freetype.h
View File

@ -154,6 +154,7 @@ FT_BEGIN_HEADER
* FT_FACE_FLAG_EXTERNAL_STREAM
* FT_FACE_FLAG_HINTER
* FT_FACE_FLAG_SVG
* FT_FACE_FLAG_SBIX
*
* FT_HAS_HORIZONTAL
* FT_HAS_VERTICAL
@ -163,6 +164,7 @@ FT_BEGIN_HEADER
* FT_HAS_COLOR
* FT_HAS_MULTIPLE_MASTERS
* FT_HAS_SVG
* FT_HAS_SBIX
*
* FT_IS_SFNT
* FT_IS_SCALABLE
@ -1236,6 +1238,12 @@ FT_BEGIN_HEADER
*
* FT_FACE_FLAG_SVG ::
* [Since 2.12] The face has an 'SVG~' OpenType table.
*
* FT_FACE_FLAG_SBIX ::
* [Since 2.12] The face has an 'sbix' OpenType table *and* outlines.
* For such fonts, @FT_FACE_FLAG_SCALABLE is not set by default to
* retain backward compatibility.
*
*/
#define FT_FACE_FLAG_SCALABLE ( 1L << 0 )
#define FT_FACE_FLAG_FIXED_SIZES ( 1L << 1 )
@ -1254,6 +1262,7 @@ FT_BEGIN_HEADER
#define FT_FACE_FLAG_COLOR ( 1L << 14 )
#define FT_FACE_FLAG_VARIATION ( 1L << 15 )
#define FT_FACE_FLAG_SVG ( 1L << 16 )
#define FT_FACE_FLAG_SBIX ( 1L << 17 )
/**************************************************************************
@ -1510,6 +1519,22 @@ FT_BEGIN_HEADER
( !!( (face)->face_flags & FT_FACE_FLAG_SVG ) )
/**************************************************************************
*
* @macro:
* FT_HAS_SBIX
*
* @description:
* A macro that returns true whenever a face object contains an 'sbix'
* OpenType table *and* outline glyphs.
*
* @since:
* 2.12
*/
#define FT_HAS_SBIX( face ) \
( !!( (face)->face_flags & FT_FACE_FLAG_SBIX ) )
/**************************************************************************
*
* @enum:

5
src/sfnt/sfobjs.c
View File

@ -1058,8 +1058,13 @@
flags |= FT_FACE_FLAG_COLOR; /* color glyphs */
if ( has_outline == TRUE )
{
flags |= FT_FACE_FLAG_SCALABLE; /* scalable outlines */
if ( face->sbit_table_type == TT_SBIT_TABLE_TYPE_SBIX )
flags |= FT_FACE_FLAG_SBIX; /* and 'sbix' bitmaps */
}
/* The sfnt driver only supports bitmap fonts natively, thus we */
/* don't set FT_FACE_FLAG_HINTER. */
flags |= FT_FACE_FLAG_SFNT | /* SFNT file format */