tt_face_init( FT_Stream stream,
FT_Face ttface, /* TT_Face */
FT_Int face_index,
FT_Int num_params,
FT_Parameter* params )
{
FT_Error error;
FT_Library library;
SFNT_Service sfnt;
TT_Face face = (TT_Face)ttface;
FT_TRACE2(( "TTF driver\n" ));
library = ttface->driver->root.library;
sfnt = (SFNT_Service)FT_Get_Module_Interface( library, "sfnt" );
if ( !sfnt )
{
FT_ERROR(( "tt_face_init: cannot access `sfnt' module\n" ));
error = FT_THROW( Missing_Module );
goto Exit;
}
/* create input stream from resource */
if ( FT_STREAM_SEEK( 0 ) )
goto Exit;
/* check that we have a valid TrueType file */
error = sfnt->init_face( stream, face, face_index, num_params, params );
/* Stream may have changed. */
stream = face->root.stream;
if ( error )
goto Exit;
/* We must also be able to accept Mac/GX fonts, as well as OT ones. */
/* The 0x00020000 tag is completely undocumented; some fonts from */
/* Arphic made for Chinese Windows 3.1 have this. */
if ( face->format_tag != 0x00010000L && /* MS fonts */
face->format_tag != 0x00020000L && /* CJK fonts for Win 3.1 */
face->format_tag != TTAG_true ) /* Mac fonts */
{
FT_TRACE2(( " not a TTF font\n" ));
goto Bad_Format;
}
#ifdef TT_USE_BYTECODE_INTERPRETER
ttface->face_flags |= FT_FACE_FLAG_HINTER;
#endif
/* If we are performing a simple font format check, exit immediately. */
if ( face_index < 0 )
return FT_Err_Ok;
/* Load font directory */
error = sfnt->load_face( stream, face, face_index, num_params, params );
if ( error )
goto Exit;
if ( tt_check_trickyness( ttface ) )
ttface->face_flags |= FT_FACE_FLAG_TRICKY;
error = tt_face_load_hdmx( face, stream );
if ( error )
goto Exit;
if ( FT_IS_SCALABLE( ttface ) )
{
#ifdef FT_CONFIG_OPTION_INCREMENTAL
if ( !ttface->internal->incremental_interface )
error = tt_face_load_loca( face, stream );
if ( !error )
error = tt_face_load_cvt( face, stream );
if ( !error )
error = tt_face_load_fpgm( face, stream );
if ( !error )
error = tt_face_load_prep( face, stream );
/* Check the scalable flag based on `loca'. */
if ( !ttface->internal->incremental_interface &&
ttface->num_fixed_sizes &&
face->glyph_locations &&
tt_check_single_notdef( ttface ) )
{
FT_TRACE5(( "tt_face_init:"
" Only the `.notdef' glyph has an outline.\n"
" "
" Resetting scalable flag to FALSE.\n" ));
ttface->face_flags &= ~FT_FACE_FLAG_SCALABLE;
}
#else /* !FT_CONFIG_OPTION_INCREMENTAL */
if ( !error )
error = tt_face_load_loca( face, stream );
if ( !error )
error = tt_face_load_cvt( face, stream );
if ( !error )
error = tt_face_load_fpgm( face, stream );
if ( !error )
error = tt_face_load_prep( face, stream );
/* Check the scalable flag based on `loca'. */
if ( ttface->num_fixed_sizes &&
face->glyph_locations &&
tt_check_single_notdef( ttface ) )
{
FT_TRACE5(( "tt_face_init:"
" Only the `.notdef' glyph has an outline.\n"
" "
" Resetting scalable flag to FALSE.\n" ));
ttface->face_flags &= ~FT_FACE_FLAG_SCALABLE;
}
#endif /* !FT_CONFIG_OPTION_INCREMENTAL */
}
#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT
{
FT_Int instance_index = face_index >> 16;
if ( FT_HAS_MULTIPLE_MASTERS( ttface ) &&
instance_index > 0 )
{
error = TT_Get_MM_Var( face, NULL );
if ( error )
goto Exit;
if ( face->blend->mmvar->namedstyle )
{
FT_Memory memory = ttface->memory;
FT_Var_Named_Style* named_style;
FT_String* style_name;
/* in `face_index', the instance index starts with value 1 */
named_style = face->blend->mmvar->namedstyle + instance_index - 1;
error = sfnt->get_name( face,
(FT_UShort)named_style->strid,
&style_name );
if ( error )
goto Exit;
/* set style name; if already set, replace it */
if ( face->root.style_name )
FT_FREE( face->root.style_name );
face->root.style_name = style_name;
/* finally, select the named instance */
error = TT_Set_Var_Design( face,
face->blend->mmvar->num_axis,
named_style->coords );
if ( error )
goto Exit;
}
}
}
#endif /* TT_CONFIG_OPTION_GX_VAR_SUPPORT */
/* initialize standard glyph loading routines */
TT_Init_Glyph_Loading( face );
Exit:
return error;
Bad_Format:
error = FT_THROW( Unknown_File_Format );
goto Exit;
}
tt_face_init( FT_Stream stream,
FT_Face ttface, /* TT_Face */
FT_Int face_index,
FT_Int num_params,
FT_Parameter* params )
{
FT_Error error;
FT_Library library;
SFNT_Service sfnt;
TT_Face face = (TT_Face)ttface;
library = face->root.driver->root.library;
sfnt = (SFNT_Service)FT_Get_Module_Interface( library, "sfnt" );
if ( !sfnt )
goto Bad_Format;
/* create input stream from resource */
if ( FT_STREAM_SEEK( 0 ) )
goto Exit;
/* check that we have a valid TrueType file */
error = sfnt->init_face( stream, face, face_index, num_params, params );
if ( error )
goto Exit;
/* We must also be able to accept Mac/GX fonts, as well as OT ones. */
/* The 0x00020000 tag is completely undocumented; some fonts from */
/* Arphic made for Chinese Windows 3.1 have this. */
if ( face->format_tag != 0x00010000L && /* MS fonts */
face->format_tag != 0x00020000L && /* CJK fonts for Win 3.1 */
face->format_tag != TTAG_true ) /* Mac fonts */
{
FT_TRACE2(( "[not a valid TTF font]\n" ));
goto Bad_Format;
}
#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
face->root.face_flags |= FT_FACE_FLAG_HINTER;
#endif
/* If we are performing a simple font format check, exit immediately. */
if ( face_index < 0 )
return TT_Err_Ok;
/* Load font directory */
error = sfnt->load_face( stream, face, face_index, num_params, params );
if ( error )
goto Exit;
error = tt_face_load_hdmx( face, stream );
if ( error )
goto Exit;
if ( face->root.face_flags & FT_FACE_FLAG_SCALABLE )
{
#ifdef FT_CONFIG_OPTION_INCREMENTAL
if ( !face->root.internal->incremental_interface )
error = tt_face_load_loca( face, stream );
if ( !error )
error = tt_face_load_cvt( face, stream ) ||
tt_face_load_fpgm( face, stream ) ||
tt_face_load_prep( face, stream );
#else
if ( !error )
error = tt_face_load_loca( face, stream ) ||
tt_face_load_cvt( face, stream ) ||
tt_face_load_fpgm( face, stream ) ||
tt_face_load_prep( face, stream );
#endif
}
#ifdef TT_CONFIG_OPTION_UNPATENTED_HINTING
/* Determine whether unpatented hinting is to be used for this face. */
face->unpatented_hinting = FT_BOOL
( library->debug_hooks[ FT_DEBUG_HOOK_UNPATENTED_HINTING ] != NULL );
{
int i;
for ( i = 0; i < num_params && !face->unpatented_hinting; i++ )
if ( params[i].tag == FT_PARAM_TAG_UNPATENTED_HINTING )
face->unpatented_hinting = TRUE;
}
#endif /* TT_CONFIG_OPTION_UNPATENTED_HINTING */
/* initialize standard glyph loading routines */
TT_Init_Glyph_Loading( face );
Exit:
return error;
Bad_Format:
error = TT_Err_Unknown_File_Format;
goto Exit;
}