static JWindow screenTextOverlay_withOutline(fS text, O... _) {
  ret swing(func -> JWindow {
    new JWindow w;
    w.setAlwaysOnTop(true);
    w.setVisible(true);
    
    Font font = cast optPar font(_);
    if (font == null)
      font = w.getFont().deriveFont(boolPar bold(_, true) ? Font.BOLD : Font.PLAIN, optPar fontSize(_, 80));
    TextLayout tl = newTextLayout(text, font, w);
    Rectangle2D r = tl.getBounds();
    new AffineTransform tx;
    tx.translate(0, r.getHeight());
    Shape outline = tl.getOutline(tx);
    
    float outlineWidth = optPar outlineWidth(_, 4.0f);
    JComponent c = dynamicallyPaintedComponent(voidfunc(Graphics2D g, int w, int h) {
      fillRect(g, 0, 0, w, h, optPar color(_, Color.WHITE));
      g.setColor(Color.black);
      g.setStroke(new BasicStroke(outlineWidth);
      antiAliasOn(g);
      g.draw(outline);
    });
    w.add(c);

    centerWindow(w, iceil(r.getWidth()+optPar magicXMargin(_, 10)), 
      iceil(r.getHeight()+optPar magicYMargin(_, 10)));
    w.setShape(outline);
    ret w;
  });
}

Began life as a copy of #1023014