image method

@override Future<bool> image(Uint8List image, { int threshold = 150, })

Implementation

@override
Future<bool> image(Uint8List image, {int threshold = 150}) async {
  final decodedImage = decodeImage(image)!;
  final rasterizeImage = _toRaster(decodedImage, dpi: int.parse(dpi));
  final converted = toPixel(
      ImageData(width: decodedImage.width, height: decodedImage.height),
      paperWidth: int.parse(_sizeWidth),
      dpi: int.parse(dpi),
      isTspl: true);

  final ms = 1000 + (converted.height * 0.5).toInt();

  return await sendToConnector(() {
    if (image.length > 0) {
      List<int> buffer = [];
      buffer += this._config.codeUnits;
      buffer += Command.clearCache().codeUnits;
      buffer += Command.imageString('0', '0', converted.width.toString(),
              converted.height.toString(),
              mode: '0')
          .codeUnits;
      buffer += rasterizeImage.data;
      buffer += Command.EOL_HEX;
      buffer += Command.printIt('1', repeat: '1').codeUnits;
      buffer += Command.close().codeUnits;
      return buffer;
    } else {
      return [];
    }
  }, delayMs: ms);
}