makeText method

@override Iterable<BarcodeElement> makeText(String data, double width, double height, double fontHeight, double textPadding, double lineWidth,)

Stream the text operations required to draw the barcode texts. This is automatically called by make

Implementation

@override
Iterable<BarcodeElement> makeText(
  String data,
  double width,
  double height,
  double fontHeight,
  double textPadding,
  double lineWidth,
) sync* {
  data = checkLength(data, maxLength);
  yield* super.makeText(
    data,
    width,
    height,
    fontHeight,
    textPadding,
    lineWidth,
  );

  if (drawIsbn) {
    final isbn =
        '${data.substring(0, 3)}-${data.substring(3, 12)}-${data.substring(12, 13)}';

    yield BarcodeText(
      left: 0,
      top: 0,
      width: width,
      height: fontHeight,
      text: 'ISBN $isbn',
      align: BarcodeTextAlign.center,
    );
  }
}