convert method

@override Barcode2DMatrix convert(Uint8List data)

Actual barcode computation method, returns a matrix of bool which represents the presence or absence of a pixel

Implementation

@override
Barcode2DMatrix convert(Uint8List data) {
  var text = <int>[...data];

  _CodeSize? size;
  for (final s in _CodeSize.codeSizes) {
    if (s.dataCodewords() >= text.length) {
      size = s;
      break;
    }
  }

  if (size == null) {
    throw const BarcodeException('Too much data to encode');
  }
  text = _addPadding(text, size.dataCodewords());
  text = _ErrorCorrection.ec.calcECC(text, size);
  final code = _render(text, size);

  return Barcode2DMatrix(
    size.columns,
    size.rows,
    1,
    code,
  );
}