diff options
author | Werner Lemberg <wl@gnu.org> | 2022-03-19 18:51:34 +0100 |
---|---|---|
committer | Werner Lemberg <wl@gnu.org> | 2022-03-25 06:37:41 +0000 |
commit | 1949a7ec3a71572c24fe00e879b2a9b2b54f773d (patch) | |
tree | 0c7b79d771e14a916ec1efb70db4ed0d1dabe5c6 /src/sfnt/sfobjs.c | |
parent | ac4c1ebf7edb3c142c5c4ad9b3345d95325750fd (diff) | |
download | freetype2-1949a7ec3a71572c24fe00e879b2a9b2b54f773d.tar.gz |
Add `FT_PARAM_TAG_IGNORE_SBIX`.
This is another bit to handle 'sbix' tables as described in the OpenType
specification.
* include/freetype/ftparams.h (FT_PARAM_TAG_IGNORE_SBIX): New macro.
* src/sfnt/sfobjc.c (is_apple_sbix): Rename to...
(has_sbix): ... this.
Check for more sbit tables.
Handle `FT_PARAM_TAG_IGNORE_SBIX` to eventually control `has_sbix`.
Only call sbit table loader if an sbit table is present.
Diffstat (limited to 'src/sfnt/sfobjs.c')
-rw-r--r-- | src/sfnt/sfobjs.c | 52 |
1 files changed, 35 insertions, 17 deletions
diff --git a/src/sfnt/sfobjs.c b/src/sfnt/sfobjs.c index 614ff68de..35d3d6c78 100644 --- a/src/sfnt/sfobjs.c +++ b/src/sfnt/sfobjs.c @@ -784,17 +784,23 @@ FT_Int num_params, FT_Parameter* params ) { - FT_Error error; + FT_Error error; #ifdef TT_CONFIG_OPTION_POSTSCRIPT_NAMES - FT_Error psnames_error; + FT_Error psnames_error; #endif - FT_Bool has_outline; - FT_Bool is_apple_sbit; - FT_Bool is_apple_sbix; - FT_Bool has_CBLC; - FT_Bool has_CBDT; - FT_Bool ignore_typographic_family = FALSE; - FT_Bool ignore_typographic_subfamily = FALSE; + + FT_Bool has_outline; + FT_Bool is_apple_sbit; + + FT_Bool has_CBLC; + FT_Bool has_CBDT; + FT_Bool has_EBLC; + FT_Bool has_bloc; + FT_Bool has_sbix; + + FT_Bool ignore_typographic_family = FALSE; + FT_Bool ignore_typographic_subfamily = FALSE; + FT_Bool ignore_sbix = FALSE; SFNT_Service sfnt = (SFNT_Service)face->sfnt; @@ -813,6 +819,8 @@ ignore_typographic_family = TRUE; else if ( params[i].tag == FT_PARAM_TAG_IGNORE_TYPOGRAPHIC_SUBFAMILY ) ignore_typographic_subfamily = TRUE; + else if ( params[i].tag == FT_PARAM_TAG_IGNORE_SBIX ) + ignore_sbix = TRUE; } } @@ -848,8 +856,17 @@ tt_face_lookup_table( face, TTAG_CFF2 ) ); #endif - is_apple_sbit = 0; - is_apple_sbix = !face->goto_table( face, TTAG_sbix, stream, 0 ); + /* check which sbit formats are present */ + has_CBLC = !face->goto_table( face, TTAG_CBLC, stream, 0 ); + has_CBDT = !face->goto_table( face, TTAG_CBDT, stream, 0 ); + has_EBLC = !face->goto_table( face, TTAG_EBLC, stream, 0 ); + has_bloc = !face->goto_table( face, TTAG_bloc, stream, 0 ); + has_sbix = !face->goto_table( face, TTAG_sbix, stream, 0 ); + + is_apple_sbit = FALSE; + + if ( ignore_sbix ) + has_sbix = FALSE; /* if this font doesn't contain outlines, we try to load */ /* a `bhed' table */ @@ -861,16 +878,13 @@ /* load the font header (`head' table) if this isn't an Apple */ /* sbit font file */ - if ( !is_apple_sbit || is_apple_sbix ) + if ( !is_apple_sbit || has_sbix ) { LOAD_( head ); if ( error ) goto Exit; } - has_CBLC = !face->goto_table( face, TTAG_CBLC, stream, 0 ); - has_CBDT = !face->goto_table( face, TTAG_CBDT, stream, 0 ); - /* Ignore outlines for CBLC/CBDT fonts. */ if ( has_CBLC || has_CBDT ) has_outline = FALSE; @@ -980,7 +994,11 @@ /* the optional tables */ /* embedded bitmap support */ - if ( sfnt->load_eblc ) + /* TODO: Replace this clumsy check for all possible sbit tables */ + /* with something better (for example, by passing a parameter */ + /* to suppress 'sbix' loading). */ + if ( sfnt->load_eblc && + ( has_CBLC || has_EBLC || has_bloc || has_sbix ) ) LOAD_( eblc ); /* colored glyph support */ @@ -1055,7 +1073,7 @@ { /* by default (and for backward compatibility) we handle */ /* fonts with an 'sbix' table as bitmap-only */ - if ( is_apple_sbix ) + if ( has_sbix ) flags |= FT_FACE_FLAG_SBIX; /* with 'sbix' bitmaps */ else flags |= FT_FACE_FLAG_SCALABLE; /* scalable outlines */ |