tt_face_load_post( TT_Face face,
FT_Stream stream )
{
FT_Error error;
TT_Postscript* post = &face->postscript;
static const FT_Frame_Field post_fields[] =
{
#undef FT_STRUCTURE
#define FT_STRUCTURE TT_Postscript
FT_FRAME_START( 32 ),
FT_FRAME_ULONG( FormatType ),
FT_FRAME_ULONG( italicAngle ),
FT_FRAME_SHORT( underlinePosition ),
FT_FRAME_SHORT( underlineThickness ),
FT_FRAME_ULONG( isFixedPitch ),
FT_FRAME_ULONG( minMemType42 ),
FT_FRAME_ULONG( maxMemType42 ),
FT_FRAME_ULONG( minMemType1 ),
FT_FRAME_ULONG( maxMemType1 ),
FT_FRAME_END
};
error = face->goto_table( face, TTAG_post, stream, 0 );
if ( error )
return error;
if ( FT_STREAM_READ_FIELDS( post_fields, post ) )
return error;
/* we don't load the glyph names, we do that in another */
/* module (ttpost). */
FT_TRACE3(( "FormatType: 0x%x\n", post->FormatType ));
FT_TRACE3(( "isFixedPitch: %s\n", post->isFixedPitch
? " yes" : " no" ));
return SFNT_Err_Ok;
}
static FT_Error
tt_face_load_generic_header( TT_Face face,
FT_Stream stream,
FT_ULong tag )
{
FT_Error error;
TT_Header* header;
static const FT_Frame_Field header_fields[] =
{
#undef FT_STRUCTURE
#define FT_STRUCTURE TT_Header
FT_FRAME_START( 54 ),
FT_FRAME_ULONG ( Table_Version ),
FT_FRAME_ULONG ( Font_Revision ),
FT_FRAME_LONG ( CheckSum_Adjust ),
FT_FRAME_LONG ( Magic_Number ),
FT_FRAME_USHORT( Flags ),
FT_FRAME_USHORT( Units_Per_EM ),
FT_FRAME_LONG ( Created[0] ),
FT_FRAME_LONG ( Created[1] ),
FT_FRAME_LONG ( Modified[0] ),
FT_FRAME_LONG ( Modified[1] ),
FT_FRAME_SHORT ( xMin ),
FT_FRAME_SHORT ( yMin ),
FT_FRAME_SHORT ( xMax ),
FT_FRAME_SHORT ( yMax ),
FT_FRAME_USHORT( Mac_Style ),
FT_FRAME_USHORT( Lowest_Rec_PPEM ),
FT_FRAME_SHORT ( Font_Direction ),
FT_FRAME_SHORT ( Index_To_Loc_Format ),
FT_FRAME_SHORT ( Glyph_Data_Format ),
FT_FRAME_END
};
error = face->goto_table( face, tag, stream, 0 );
if ( error )
goto Exit;
header = &face->header;
if ( FT_STREAM_READ_FIELDS( header_fields, header ) )
goto Exit;
FT_TRACE3(( "Units per EM: %4u\n", header->Units_Per_EM ));
FT_TRACE3(( "IndexToLoc: %4d\n", header->Index_To_Loc_Format ));
Exit:
return error;
}
tt_face_load_hhea( TT_Face face,
FT_Stream stream,
FT_Bool vertical )
{
FT_Error error;
TT_HoriHeader* header;
const FT_Frame_Field metrics_header_fields[] =
{
#undef FT_STRUCTURE
#define FT_STRUCTURE TT_HoriHeader
FT_FRAME_START( 36 ),
FT_FRAME_ULONG ( Version ),
FT_FRAME_SHORT ( Ascender ),
FT_FRAME_SHORT ( Descender ),
FT_FRAME_SHORT ( Line_Gap ),
FT_FRAME_USHORT( advance_Width_Max ),
FT_FRAME_SHORT ( min_Left_Side_Bearing ),
FT_FRAME_SHORT ( min_Right_Side_Bearing ),
FT_FRAME_SHORT ( xMax_Extent ),
FT_FRAME_SHORT ( caret_Slope_Rise ),
FT_FRAME_SHORT ( caret_Slope_Run ),
FT_FRAME_SHORT ( caret_Offset ),
FT_FRAME_SHORT ( Reserved[0] ),
FT_FRAME_SHORT ( Reserved[1] ),
FT_FRAME_SHORT ( Reserved[2] ),
FT_FRAME_SHORT ( Reserved[3] ),
FT_FRAME_SHORT ( metric_Data_Format ),
FT_FRAME_USHORT( number_Of_HMetrics ),
FT_FRAME_END
};
if ( vertical )
{
void *v = &face->vertical;
error = face->goto_table( face, TTAG_vhea, stream, 0 );
if ( error )
goto Fail;
header = (TT_HoriHeader*)v;
}
else
{
error = face->goto_table( face, TTAG_hhea, stream, 0 );
if ( error )
goto Fail;
header = &face->horizontal;
}
if ( FT_STREAM_READ_FIELDS( metrics_header_fields, header ) )
goto Fail;
FT_TRACE3(( "Ascender: %5d\n", header->Ascender ));
FT_TRACE3(( "Descender: %5d\n", header->Descender ));
FT_TRACE3(( "number_Of_Metrics: %5u\n", header->number_Of_HMetrics ));
header->long_metrics = NULL;
header->short_metrics = NULL;
Fail:
return error;
}
tt_face_load_os2( TT_Face face,
FT_Stream stream )
{
FT_Error error;
TT_OS2* os2;
const FT_Frame_Field os2_fields[] =
{
#undef FT_STRUCTURE
#define FT_STRUCTURE TT_OS2
FT_FRAME_START( 78 ),
FT_FRAME_USHORT( version ),
FT_FRAME_SHORT ( xAvgCharWidth ),
FT_FRAME_USHORT( usWeightClass ),
FT_FRAME_USHORT( usWidthClass ),
FT_FRAME_SHORT ( fsType ),
FT_FRAME_SHORT ( ySubscriptXSize ),
FT_FRAME_SHORT ( ySubscriptYSize ),
FT_FRAME_SHORT ( ySubscriptXOffset ),
FT_FRAME_SHORT ( ySubscriptYOffset ),
FT_FRAME_SHORT ( ySuperscriptXSize ),
FT_FRAME_SHORT ( ySuperscriptYSize ),
FT_FRAME_SHORT ( ySuperscriptXOffset ),
FT_FRAME_SHORT ( ySuperscriptYOffset ),
FT_FRAME_SHORT ( yStrikeoutSize ),
FT_FRAME_SHORT ( yStrikeoutPosition ),
FT_FRAME_SHORT ( sFamilyClass ),
FT_FRAME_BYTE ( panose[0] ),
FT_FRAME_BYTE ( panose[1] ),
FT_FRAME_BYTE ( panose[2] ),
FT_FRAME_BYTE ( panose[3] ),
FT_FRAME_BYTE ( panose[4] ),
FT_FRAME_BYTE ( panose[5] ),
FT_FRAME_BYTE ( panose[6] ),
FT_FRAME_BYTE ( panose[7] ),
FT_FRAME_BYTE ( panose[8] ),
FT_FRAME_BYTE ( panose[9] ),
FT_FRAME_ULONG ( ulUnicodeRange1 ),
FT_FRAME_ULONG ( ulUnicodeRange2 ),
FT_FRAME_ULONG ( ulUnicodeRange3 ),
FT_FRAME_ULONG ( ulUnicodeRange4 ),
FT_FRAME_BYTE ( achVendID[0] ),
FT_FRAME_BYTE ( achVendID[1] ),
FT_FRAME_BYTE ( achVendID[2] ),
FT_FRAME_BYTE ( achVendID[3] ),
FT_FRAME_USHORT( fsSelection ),
FT_FRAME_USHORT( usFirstCharIndex ),
FT_FRAME_USHORT( usLastCharIndex ),
FT_FRAME_SHORT ( sTypoAscender ),
FT_FRAME_SHORT ( sTypoDescender ),
FT_FRAME_SHORT ( sTypoLineGap ),
FT_FRAME_USHORT( usWinAscent ),
FT_FRAME_USHORT( usWinDescent ),
FT_FRAME_END
};
const FT_Frame_Field os2_fields_extra[] =
{
FT_FRAME_START( 8 ),
FT_FRAME_ULONG( ulCodePageRange1 ),
FT_FRAME_ULONG( ulCodePageRange2 ),
FT_FRAME_END
};
const FT_Frame_Field os2_fields_extra2[] =
{
FT_FRAME_START( 10 ),
FT_FRAME_SHORT ( sxHeight ),
FT_FRAME_SHORT ( sCapHeight ),
FT_FRAME_USHORT( usDefaultChar ),
FT_FRAME_USHORT( usBreakChar ),
FT_FRAME_USHORT( usMaxContext ),
FT_FRAME_END
};
/* We now support old Mac fonts where the OS/2 table doesn't */
/* exist. Simply put, we set the `version' field to 0xFFFF */
/* and test this value each time we need to access the table. */
error = face->goto_table( face, TTAG_OS2, stream, 0 );
if ( error )
goto Exit;
os2 = &face->os2;
if ( FT_STREAM_READ_FIELDS( os2_fields, os2 ) )
goto Exit;
os2->ulCodePageRange1 = 0;
os2->ulCodePageRange2 = 0;
os2->sxHeight = 0;
os2->sCapHeight = 0;
os2->usDefaultChar = 0;
os2->usBreakChar = 0;
os2->usMaxContext = 0;
if ( os2->version >= 0x0001 )
{
/* only version 1 tables */
if ( FT_STREAM_READ_FIELDS( os2_fields_extra, os2 ) )
goto Exit;
if ( os2->version >= 0x0002 )
{
/* only version 2 tables */
if ( FT_STREAM_READ_FIELDS( os2_fields_extra2, os2 ) )
goto Exit;
}
}
FT_TRACE3(( "sTypoAscender: %4d\n", os2->sTypoAscender ));
FT_TRACE3(( "sTypoDescender: %4d\n", os2->sTypoDescender ));
FT_TRACE3(( "usWinAscent: %4u\n", os2->usWinAscent ));
FT_TRACE3(( "usWinDescent: %4u\n", os2->usWinDescent ));
FT_TRACE3(( "fsSelection: 0x%2x\n", os2->fsSelection ));
Exit:
return error;
}
FT_FRAME_SHORT_LE( characterWidth ),
FT_FRAME_SHORT_LE( ascent ),
FT_FRAME_SHORT_LE( descent ),
FT_FRAME_SHORT_LE( attributes ),
FT_FRAME_END
};
static
const FT_Frame_Field pcf_metric_msb_header[] =
{
#undef FT_STRUCTURE
#define FT_STRUCTURE PCF_MetricRec
FT_FRAME_START( PCF_METRIC_SIZE ),
FT_FRAME_SHORT( leftSideBearing ),
FT_FRAME_SHORT( rightSideBearing ),
FT_FRAME_SHORT( characterWidth ),
FT_FRAME_SHORT( ascent ),
FT_FRAME_SHORT( descent ),
FT_FRAME_SHORT( attributes ),
FT_FRAME_END
};
#define PCF_COMPRESSED_METRIC_SIZE 5
static
const FT_Frame_Field pcf_compressed_metric_header[] =
{
#undef FT_STRUCTURE
