static JWindow screenTextOverlay_withOutline_multiLine_centered(fS text, O... _) {
  ret swing(func -> JWindow {
    new JWindow w;
    
    optPar Color outlineColor = Color.black;
    
    Font font = cast optPar font(_);
    if (font == null)
      font = w.getFont().deriveFont(boolPar bold(_, true) ? Font.BOLD : Font.PLAIN, optPar fontSize(_, 80));
    Pair<Shape, Rect> shapeAndSize = textLayoutToOutlineAndSize_multiLine_centered(text, font, w);

    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(outlineColor);
      g.setStroke(new BasicStroke(outlineWidth);
      antiAliasOn(g);
      g.draw(shapeAndSize.a);
    });
    w.add(c);

    centerWindow(w, iceil(shapeAndSize.b.w+optPar magicXMargin(_, 10)), 
      iceil(shapeAndSize.b.h+optPar magicYMargin(_, 10)));
    w.setShape(shapeAndSize.a);
    w.setAlwaysOnTop(true);
    w.setVisible(true);
    ret w;
  });
}

Began life as a copy of #1023073