load method

Converts a key into an PictureStreamCompleter, and begins fetching the picture.

Implementation

@override
PictureStreamCompleter load(PictureKey<String> key,
    {PictureErrorListener? onError}) {
  return OneFramePictureStreamCompleter(
    _loadAsync(key, onError: onError),
    informationCollector: () => <DiagnosticsNode>[
      DiagnosticsProperty<String>('Path', file.path),
    ],
  );
}