clause method

@override CommandClause clause()

Implementation

@override
CommandClause clause() {
  var processer = Pbita(
    command: 'tspl',
    threshold: _threshold,
    compress: _compress,
    reverse: _reverse,
  );
  var info = processer.processWithBytes(Uint8List.fromList(_image));
  var fimage = info.result;
  if (fimage == null) {
    throw Exception('Wrong image data');
  }
  int width = fimage.width;
  int height = fimage.height;

  int byteWidth = ((width % 8 == 0) ? (width / 8) : (width / 8 + 1)).floor();

  Commander commander = Commander.make();
  TSPLCommand tsplCommand = TSPLCommand(header: header())
      .appendNumber(_x)
      .appendNumber(_y)
      .appendNumber(byteWidth)
      .appendNumber(height);
  if (_compress) {
    tsplCommand.appendText("3").appendNumber(fimage.data.length);
    commander
        .pushClause(tsplCommand.clause(), newline: false)
        .pushText(",", newline: false)
        .pushBinary(fimage.data, newline: false);
  } else {
    tsplCommand.appendNumber(_mode.getMode());
    commander
        .pushClause(tsplCommand.clause(), newline: false)
        .pushText(",", newline: false)
        .pushBinary(fimage.data, newline: false);
  }
  Command command = commander.newline().command();
  return Raw.binary(command.binary()).clause();
}