package mypict;

import java.awt.*;
import javax.swing.JPanel;
import java.awt.event.*;
import java.awt.image.*;
import java.awt.geom.*;
import javax.swing.*;

 class TestPanel
    extends JPanel
{
    BorderLayout borderLayout1 = new BorderLayout();
    BufferedImage bi, biSrc, biDest;
    Graphics2D big;
    Image im;
    int w, h, flag;
    float scaleFactor = 1.0f;
    float offset = 0.0f;

    public TestPanel()
    {
        try
        {
            jbInit();
        }
        catch (Exception ex)
        {
            ex.printStackTrace();
        }
    }

    void jbInit() throws Exception
    {
        this.setLayout(borderLayout1);
        Panel pdown;
        pdown = new Panel();
        Button sharpen = new Button("sharpen");
        Button blur = new Button("blur");
        Button edge = new Button("edge");
        Button reset = new Button("reset");

        pdown.setBackground(Color.lightGray);
        pdown.setLayout(new GridLayout(2, 0));
        pdown.add(sharpen);
        pdown.add(blur);
        pdown.add(edge);
        pdown.add(reset);
        this.setLayout(new BorderLayout());
        this.add(pdown, BorderLayout.SOUTH);

        MediaTracker tracker = new MediaTracker(this);

        im = Toolkit.getDefaultToolkit().getImage("m.jpg");
        tracker.addImage(im, 0);

        try
        {
            tracker.waitForID(0);
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }

        w = im.getWidth(this);
        h = im.getHeight(this);

        biSrc = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
        big = biSrc.createGraphics();
        big.drawImage(im, 0, 0, this);
        biDest = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
        bi = biSrc;

        sharpen.addActionListener(new ActionListener()
        {
            public void actionPerformed(ActionEvent e)
            {
                sharpen_actionPerformed(e);
                repaint();
            }
        });

        edge.addActionListener(new ActionListener()
        {
            public void actionPerformed(ActionEvent e)
            {
                edge_actionPerformed(e);
                 repaint();
            }
        });
        blur.addActionListener(new ActionListener()
        {
            public void actionPerformed(ActionEvent e)
            {
                blur_actionPerformed(e);
                 repaint();
            }
        });
        reset.addActionListener(new ActionListener()
        {
            public void actionPerformed(ActionEvent e)
            {
                reset_actionPerformed(e);
                 repaint();
            }
        });

    }
    
    public void sharpen_actionPerformed(ActionEvent e)
    {
        float data[] =
            {
             -1.0f, -1.0f, -1.0f, -1.0f, 9.0f, -1.0f, -1.0f, -1.0f, -1.0f, };
        Kernel kernel = new Kernel(3, 3, data);
        ConvolveOp convolve = new ConvolveOp(kernel, ConvolveOp.EDGE_NO_OP, null);

        convolve.filter(biSrc, biDest);
        bi = biDest;

    }

    public void edge_actionPerformed(ActionEvent e)
    {
        float data[] =
            {
            0.0f, -1.0f, 0.0f, -1.0f, 4.0f, -1.0f, 0.0f, -1.0f, 0.0f, };
        
        Kernel kernel = new Kernel(3, 3, data);
        ConvolveOp convolve = new ConvolveOp(kernel, ConvolveOp.EDGE_NO_OP, null);

        convolve.filter(biSrc, biDest);
        bi = biDest;

    }

    public void blur_actionPerformed(ActionEvent e)
    {
        float data[] =
            {
            1.0f / 9.0f, 1.0f / 10.0f, 1.0f / 10.0f, 1.0f / 9.0f, 1.0f / 12.0f,
            1.0f / 9.0f, 1.0f / 9.0f, 1.0f / 10.0f, 1.0f / 9.0f, };
        Kernel kernel = new Kernel(3, 3, data);
        ConvolveOp convolve = new ConvolveOp(kernel, ConvolveOp.EDGE_NO_OP, null);

        convolve.filter(biSrc, biDest);
        bi = biDest;

    }

    public void reset_actionPerformed(ActionEvent e)
    {
        bi = biSrc;
    }
    
    public void paint(Graphics g)
    {
       Graphics2D g2d = (Graphics2D)g;
       g2d.drawImage(bi,0,0,this);
    }     
 
}

public class TestFrame
    extends Frame
{
    public TestFrame()
    {
        addWindowListener(new WindowAdapter()
        {

            public void windowClosing(WindowEvent e)
            {
                System.exit(0);
            }
        });
        TestPanel tp = new TestPanel();
        add(tp);
    }
    
    public static void main(String[] args)
    {
       TestFrame f = new TestFrame();
       f.setSize(250,400);
       f.show();
    }

}