Node.lzz

class Node : public QLabel {
  virtual lzz_inline_Q_OBJECT() = 0;

public:
  Node(std::string& msg) 
  {
    QString str(msg.c_str());
    setText(str);
    setFrameStyle(QFrame::Panel | QFrame::Raised);
    setLineWidth(2);
    setAutoFillBackground(true);
  }

  int center_x() {
    return x() + width() / 2;
  }

  int center_y() {
    return y() + height() / 2;
  }

};