addFont method

void addFont (Future<ByteData> bytes)

Registers a font asset to be loaded by this font loader.

The bytes argument specifies the actual font asset bytes. Currently, only TrueType (TTF) fonts are supported.

Implementation 

void addFont(Future<ByteData> bytes) {
  if (_loaded)
    throw StateError('FontLoader is already loaded');

  _fontFutures.add(bytes.then(
      (ByteData data) => Uint8List.view(data.buffer, data.offsetInBytes, data.lengthInBytes)
  ));
}