@ -255,7 +255,9 @@
FT_Parameter * params )
{
FT_Error error ;
FT_Bool missing_outline = 0 ;
FT_Bool has_outline ;
FT_Bool is_apple_sbit ;
SFNT_Interface * sfnt = ( SFNT_Interface * ) face - > sfnt ;
FT_UNUSED ( face_index ) ;
@ -265,39 +267,63 @@
/* Load tables */
/* If you load SFNT wrapped sbit font files, it will fail if you */
/* want to read the `head', `hhea', and `vhea' tables. */
/* */
if ( LOAD_ ( header ) )
{
/* we now support two SFNT-based bitmapped font formats. */
/* they are recognized easily as they do not include a "glyf" */
/* table.. */
/* */
/* the first format comes from Apple, and uses a table named */
/* "bhed" instead of "head" to store the font header (using */
/* the same format). it also doesn't include horizontal and */
/* vertical metrics tables (i.e. "hhea" and "vhea" tables) */
/* */
/* the other format comes from Microsoft, and is used with */
/* WinCE / PocketPC. It's standard, except that it doesn't */
/* contain outlines.. */
/* */
/* do we have outlines in there ?? */
has_outline = ( TT_LookUp_Table ( face , TTAG_glyf ) ! = 0 ) ;
is_apple_sbit = 0 ;
# ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS
missing_outline = 1 ;
# else
goto Exit ;
/*
* if this font doesn ' t contain outlines , we ' ll try to load
* a " bhed " table in it . .
*/
if ( ! has_outline )
is_apple_sbit = ! LOAD_ ( bitmap_header ) ;
# endif
}
/* load the font header ("head" table) if this isn't an Apple */
/* sbit font file.. */
if ( ! is_apple_sbit & & LOAD_ ( header ) )
goto Exit ;
/* load other tables */
if ( LOAD_ ( max_profile ) | |
LOAD_ ( charmaps ) | |
LOAD_ ( names ) | |
LOAD_ ( psnames ) )
goto Exit ;
if ( /* load the `hhea' & `hmtx' tables at once */
( ( error = sfnt - > load_metrics ( face , stream , 0 ) ) ! = TT_Err_Ok ) | |
/* try to load the `vhea' & `vmtx' at once if present */
( ( error = sfnt - > load_metrics ( face , stream , 1 ) ) ! = TT_Err_Ok ) | |
LOAD_ ( os2 ) )
/* do not load the metrics headers and tables if this is an Apple */
/* sbit font file.. */
if ( ! is_apple_sbit )
{
# ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS
missing_outline = 1 ;
# else
goto Exit ;
# endif
/* load the "hhea" and "hmtx" tables at once */
error = sfnt - > load_metrics ( face , stream , 0 ) ;
if ( error )
goto Exit ;
/* try to load the "vhea" and "vmtx" tables at once */
error = sfnt - > load_metrics ( face , stream , 1 ) ;
if ( error )
goto Exit ;
if ( LOAD_ ( os2 ) )
goto Exit ;
}
/* the optional tables */
@ -307,11 +333,12 @@
/* embedded bitmap support. */
if ( sfnt - > load_sbits & & LOAD_ ( sbits ) )
{
if ( ! ( ( error = = TT_Err_Table_Missing ) & & /* missing SBit */
( missing_outline = = 0 ) ) ) /* find outline */
/* return an error if this font file has no outlines */
if ( error = = TT_Err_Table_Missing & & has_outline )
error = 0 ;
else
goto Exit ;
}
# endif /* TT_CONFIG_OPTION_EMBEDDED_BITMAPS */
if ( LOAD_ ( hdmx ) | |
@ -343,7 +370,7 @@
/* */
/* Compute face flags. */
/* */
if ( missing_outline = = 0 )
if ( has_outline = = TRUE )
flags = FT_FACE_FLAG_SCALABLE ; /* scalable outlines */
flags | = FT_FACE_FLAG_SFNT | /* SFNT file format */
@ -374,26 +401,23 @@
/* Compute style flags. */
/* */
flags = 0 ;
if ( missing _outline= = 0 )
if ( has _outline= = TRUE & & face - > os2 . version ! = 0xFFFF )
{
if ( face - > os2 . version ! = 0xFFFF )
{
/* we have an OS/2 table; use the `fsSelection' field */
if ( face - > os2 . fsSelection & 1 )
flags | = FT_STYLE_FLAG_ITALIC ;
/* we have an OS/2 table; use the `fsSelection' field */
if ( face - > os2 . fsSelection & 1 )
flags | = FT_STYLE_FLAG_ITALIC ;
if ( face - > os2 . fsSelection & 32 )
flags | = FT_STYLE_FLAG_BOLD ;
}
else
{
/* this is an old Mac font, use the header field */
if ( face - > header . Mac_Style & 1 )
flags | = FT_STYLE_FLAG_BOLD ;
if ( face - > os2 . fsSelection & 32 )
flags | = FT_STYLE_FLAG_BOLD ;
}
else
{
/* this is an old Mac font, use the header field */
if ( face - > header . Mac_Style & 1 )
flags | = FT_STYLE_FLAG_BOLD ;
if ( face - > header . Mac_Style & 2 )
flags | = FT_STYLE_FLAG_ITALIC ;
}
if ( face - > header . Mac_Style & 2 )
flags | = FT_STYLE_FLAG_ITALIC ;
}
root - > style_flags = flags ;
@ -437,24 +461,27 @@
if ( face - > num_sbit_strikes )
{
root - > face_flags | = FT_FACE_FLAG_FIXED_SIZES ;
#if 0
/* I don't know criteria whether layout is horizontal or vertical */
if ( missing_outline )
if ( has_outline . . . . )
{
. . .
root - > face_flags | = FT_FACE_FLAG_VERTICAL ;
}
# endif
root - > num_fixed_sizes = face - > num_sbit_strikes ;
if ( ALLOC_ARRAY ( root - > available_sizes ,
face - > num_sbit_strikes ,
FT_Bitmap_Size ) )
return error ;
goto Exit ;
for ( n = 0 ; n < face - > num_sbit_strikes ; n + + )
{
root - > available_sizes [ n ] . width =
face - > sbit_strikes [ n ] . x_ppem ;
root - > available_sizes [ n ] . height =
face - > sbit_strikes [ n ] . y_ppem ;
}
@ -464,15 +491,15 @@
# endif /* TT_CONFIG_OPTION_EMBEDDED_BITMAPS */
{
root - > num_fixed_sizes = 0 ;
root - > available_sizes = 0 ;
root - > num_fixed_sizes = 0 ;
root - > available_sizes = 0 ;
}
/*********************************************************************/
/* */
/* Set up metrics. */
/* */
if ( missing_outline = = 0 )
if ( has_outline = = TRUE )
{
/* XXX What about if outline header is missing */
/* (e.g. sfnt wrapped outline)? */
David Turner
25 years ago