Method LoadFromDisk

trinity/Font/Tr2FontManager.cpp:335–403

----------------------------------------------------------------------------- Load font file from disk using a ResFile object. -----------------------------------------------------------------------------

// Load font file from disk using a ResFile object.
//-----------------------------------------------------------------------------
FT_Face Tr2FontManager::LoadFromDisk( FTC_FaceID id )
{
	CCP_STATS_ZONE( __FUNCTION__ );

	if( !m_ftLib )
	{
		CCP_LOGERR( "Tr2FontManager::LoadFromDisk: FreeType has not been initialized" );
		return NULL;
	}

	uintptr_t index = reinterpret_cast<uintptr_t>( id );
	const char* fontPath = m_reverseFaceMap[index].c_str();

	// Create a new ResFile instance and add to the
	// opened ResFiles vector
	Be::Clsid resFileClsid( "blue", "ResFile" );
	IResFilePtr fp( resFileClsid );
	s_fpVector.Insert( -1, fp );
	// Open the file
	// TODO: Add error handling to close and remove
	// object from the opened ResFile vector
	if( !fp->Open( fontPath, true ) )
	{
		CCP_LOGERR( "Tr2FontManager::LoadFromDisk: File '%s' does not exist", fontPath );
		return NULL;
	}
	ssize_t fileLength = fp->GetSize();

	// Create our stream struct.
	// This looks like a memory leak since we are
	// creating a stream using new and not deleting
	// at the end of the function.
	// What we are doing is ensuring that the stream
	// stays alive as long as freetype may need it.
	// Freetype will then call FileClose with a pointer
	// to the stream when it is done, making it safe for
	// us to delete it there.
	FT_Stream stream = CCP_NEW( "Tr2FontManager/LoadFromDisk/stream" ) FT_StreamRec;
	if( !stream )
	{
		return NULL;
	}
	memset( stream, 0, sizeof( *stream ) );

	stream->descriptor.pointer = (void*)fp.p;

	stream->read = &FileRead;
	stream->close = &FileClose;
	stream->size = (unsigned int)fileLength;

	FT_Open_Args openargs;
	openargs.flags = FT_OPEN_STREAM;
	openargs.stream = stream;
	FT_Face face;
	FT_Error e = FT_Open_Face( m_ftLib, &openargs, 0, &face );
	if( e )
	{
		CCP_LOGERR( "Tr2FontManager::LoadFromDisk: FT_Open_Face failed for '%s'", fontPath );