In case of Type 42 Incremental downloading, 'glyf' and 'loca' table do
not present in the font data by Adobe specification. However, by
setting parameter and providing incremental interface, Freetype should
be able to print it.
T42_Face_Init( )/t42objs.c calls FT_New_Memory_Face( ) to load font
Type42 font data , and then FT_New_Memory_Face( ) calls FT_Open_Face(
). Because FT_New_Memory_Face( ) does not pass the parameter
information(specifically incremental interface information) to
FT_Open_Face( ), TT_Load_Glyph( ) / ttgload.c tried to load 'glyf'
table and cause error.
FT_EXPORT_DEF( FT_Error )
FT_New_Memory_Face( FT_Library library,
const FT_Byte* file_base,
FT_Long file_size,
FT_Long face_index,
FT_Face *aface,
)
{
FT_Open_Args args;
/* test for valid `library' and `face' delayed to FT_Open_Face() */
if ( !file_base )
return FT_Err_Invalid_Argument;
args.flags = FT_OPEN_MEMORY;
args.memory_base = file_base;
args.memory_size = file_size;
return FT_Open_Face( library, &args, face_index, aface );
}
_______________________________________________
Freetype-devel mailing list
Freetype-devel@nongnu.org
http://lists.nongnu.org/mailman/listinfo/freetype-devel
