!7

static int windowSize = 11; // odd should look nice. Set to 1 for an invisible window

static int clickDelay = 0; // Delay in ms between closing window and forwarding click. 0 seems to work fine.

static int trackingSpeed = 10; // How often to move the window (ms)

p {

  final new JWindow window;

  window.setSize(windowSize, windowSize);

  window.setVisible(true);

  window.setAlwaysOnTop(true);

  JPanel panel = singleColorPanel(Color.red);

  window.setContentPane(panel);

  revalidate(window);

  final new Robot robot;

  panel.addMouseListener(new MouseAdapter {

    // public void mousePressed(final MouseEvent e) {}

    public void mouseReleased(final MouseEvent e) {

      print("release! " + e);

      window.setVisible(false);

      int b = e.getButton();

      final int mod =

        b == 1 ? InputEvent.BUTTON1_DOWN_MASK

        : b == 2 ? InputEvent.BUTTON2_DOWN_MASK

        : InputEvent.BUTTON3_DOWN_MASK;

      swingLater(clickDelay, r {

        print("clicking " + mod);

        robot.mousePress(mod);

        robot.mouseRelease(mod);

      });

    }

  });

  swingEvery(window, trackingSpeed, r {

    Point p = getMouseLocation();

    window.setLocation(p.x-windowSize/2, p.y-windowSize/2);

    //print("moving");

  });

}