public class Window extends JFrame{

    private static boolean blockInput = true;
    private CustomCanvas canvas = new CustomCanvas();
    
    public static void main(String[] args) {
	new Window().setVisible(true);
    }
    
    public Window() {
	canvas.addMouseListener(canvas);
	LayerUI<Canvas> layerUI = new CanvasLayerUI();
	JLayer<Canvas> canvasLayer = new JLayer<Canvas>(canvas, layerUI);
	add(canvasLayer);
	setSize(800, 600);
    }
    
    private class CanvasLayerUI extends LayerUI<Canvas> {

	@Override
	public void eventDispatched(AWTEvent e, JLayer<? extends Canvas> l) {
	    if (blockInput) {
		if (e instanceof InputEvent) {
		    ((InputEvent) e).consume();
		}
	    } else {
		super.eventDispatched(e, l);
	    }
	}

	@Override
	public void installUI(JComponent c) {
	    super.installUI(c);
	    if (c instanceof JLayer) {
		JLayer<?> layer = (JLayer<?>) c;
		layer.setLayerEventMask(AWTEvent.MOUSE_EVENT_MASK);
	    }
	}

	@Override
	protected void processMouseEvent(MouseEvent e, JLayer<? extends Canvas> l) {
	    super.processMouseEvent(e, l);
	    if (e.getID() == MouseEvent.MOUSE_CLICKED) {
		System.out.println("Mouse click on layer: " + e.getPoint());
	    }
	}
    }
    
    private class CustomCanvas extends Canvas implements MouseListener {

	@Override
	public void mouseClicked(MouseEvent e) {
	    System.out.println("Mouse click on canvas: " + e.getPoint());
	}

	@Override
	public void mousePressed(MouseEvent e) {

	}

	@Override
	public void mouseReleased(MouseEvent e) {

	}

	@Override
	public void mouseEntered(MouseEvent e) {

	}

	@Override
	public void mouseExited(MouseEvent e) {
 
	}
    }
}