makeBytes method

@override Iterable<BarcodeElement> makeBytes(Uint8List data, { required double width, required double height, bool drawText = false, double? fontHeight, double? textPadding, })

Generate the barcode graphic description like make but takes a Uint8List data.

Implementation

@override
Iterable<BarcodeElement> makeBytes(
  Uint8List data, {
  required double width,
  required double height,
  bool drawText = false,
  double? fontHeight,
  double? textPadding,
}) sync* {
  assert(width > 0);
  assert(height > 0);
  assert(!drawText || fontHeight != null);
  fontHeight ??= 0;
  textPadding ??= Barcode1D.defaultTextPadding;

  yield* super.makeBytes(
    data,
    width: width,
    height: height,
    drawText: drawText,
    fontHeight: fontHeight,
    textPadding: textPadding,
  );

  if (drawBorder) {
    final bw = _getBorderWidth(width);
    final hp = drawText ? fontHeight + textPadding : 0;

    yield BarcodeBar(left: 0, top: 0, width: width, height: bw, black: true);
    yield BarcodeBar(
        left: 0,
        top: height - hp - bw,
        width: width,
        height: bw,
        black: true);
    yield BarcodeBar(
        left: 0,
        top: bw,
        width: bw,
        height: height - hp - bw * 2,
        black: true);
    yield BarcodeBar(
        left: width - bw,
        top: bw,
        width: bw,
        height: height - hp - bw * 2,
        black: true);
  }
}