!7

import javax.swing.plaf.LayerUI;

sclass BlurLayerUI extends LayerUI<JComponent> {

  BufferedImage mOffscreenImage;

  BufferedImageOp mOperation;

  *() {

    float ninth = 1.0f / 9.0f;

    float[] blurKernel = {

      ninth, ninth, ninth,

      ninth, ninth, ninth,

      ninth, ninth, ninth

    };

    mOperation = new ConvolveOp(new Kernel(3, 3, blurKernel), ConvolveOp.EDGE_NO_OP, null);

  }

  public void paint(Graphics g, JComponent c) {

    int w = c.getWidth();

    int h = c.getHeight();

    if (w == 0 || h == 0) ret;

    // Only create the offscreen image if the one we have

    // is the wrong size.

    if (mOffscreenImage == null ||

            mOffscreenImage.getWidth() != w ||

            mOffscreenImage.getHeight() != h) {

      mOffscreenImage = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);

    }

    Graphics2D ig2 = mOffscreenImage.createGraphics();

    ig2.setClip(g.getClip());

    super.paint(ig2, c);

    ig2.dispose();

    ((Graphics2D) g).drawImage(mOffscreenImage, mOperation, 0, 0);

  }

}

p-substance {

  LayerUI<JComponent> layerUI = new BlurLayerUI();

  JPanel panel = createPanel();

  JLayer<JComponent> jlayer = new JLayer<JComponent>(panel, layerUI);

  centerFrame(setFrameSize(showFrame("Myopia", jlayer), 300, 200));

  hideConsole();

}

static JPanel createPanel() {

  JPanel p = new JPanel();

  ButtonGroup entreeGroup = new ButtonGroup();

  JRadioButton radioButton;

  p.add(radioButton = new JRadioButton("Beef", true));

  entreeGroup.add(radioButton);

  p.add(radioButton = new JRadioButton("Chicken"));

  entreeGroup.add(radioButton);

  p.add(radioButton = new JRadioButton("Vegetable"));

  entreeGroup.add(radioButton);

  p.add(new JCheckBox("Ketchup"));

  p.add(new JCheckBox("Mustard"));

  p.add(new JCheckBox("Pickles"));

  p.add(new JLabel("Special requests:"));

  p.add(new JTextField(20));

  JButton orderButton = new JButton("Place Order");

  p.add(orderButton);

  return p;

}