import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.RenderingHints;
import java.awt.image.BufferedImage;
import java.net.URL;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.SwingUtilities;

public class ImageScale1 extends JComponent {
    private BufferedImage image;
    private static final int PADDING = 20;
    private static final double SCALE_FACTOR = .1;
    private int scaleW, scaleH;

    public ImageScale1() {
        try {
            URL url = new URL("http://farm4.static.flickr.com/3609/3620307800_6e7d70f593_b.jpg");
            image = ImageIO.read(url);
            scaleW = (int)(SCALE_FACTOR * image.getWidth());
            scaleH = (int)(SCALE_FACTOR * image.getHeight());
            setPreferredSize(new Dimension(PADDING + (3 * (scaleW + PADDING)), 
                                           PADDING + (2 * (scaleH + PADDING))));
        } catch (IOException e) {
            System.err.println("Image Loading ERROR: " + e);
            System.exit(0);
        }
    }

    public void paintComponent(Graphics g) {
        int x = PADDING;
        int y = PADDING;
        
        Graphics2D g2d = (Graphics2D)g;

        // NEAREST NEIGHBOR
        g2d.drawString("NearestNeighbor", x, y);
        long start = System.nanoTime();
        g2d.setRenderingHint(RenderingHints.KEY_INTERPOLATION, 
                             RenderingHints.VALUE_INTERPOLATION_NEAREST_NEIGHBOR);
        g2d.drawImage(image, x, y, scaleW, scaleH, null);
        long end = System.nanoTime();
        System.out.println("Nearest Neighbor: " + (end - start)/1000000.0 + "ms");


        // BILINEAR
        x += scaleW + PADDING;
        g2d.drawString("Bilinear", x, y);
        start = System.nanoTime();
        g2d.setRenderingHint(RenderingHints.KEY_INTERPOLATION, 
                             RenderingHints.VALUE_INTERPOLATION_BILINEAR);
        g2d.drawImage(image, x, y, scaleW, scaleH, null);
        end = System.nanoTime();
        System.out.println("Bilinear: " + (end - start)/1000000.0 + "ms");

        // BICUBIC
        x += scaleW + PADDING;
        g2d.drawString("Bicubic", x, y);
        start = System.nanoTime();
        g2d.setRenderingHint(RenderingHints.KEY_INTERPOLATION, 
                             RenderingHints.VALUE_INTERPOLATION_BICUBIC);
        g2d.drawImage(image, x, y, scaleW, scaleH, null);
        end = System.nanoTime();
        System.out.println("Bicubic: " + (end - start)/1000000.0 + "ms");

        // getScaledInstance() DEFAULT
        x = PADDING;
        y += scaleH + PADDING;
        g2d.drawString("Default", x, y);
        start = System.nanoTime();
        Image scaledImg1 = image.getScaledInstance(scaleW, scaleH, 
                                                  Image.SCALE_DEFAULT);
        g.drawImage(scaledImg1, x, y, null);
        end = System.nanoTime();
        System.out.println("Default: " + (end - start)/1000000.0 + "ms");

        // getScaledInstance() SMOOTH
        x += scaleW + PADDING;
        g2d.drawString("Smooth", x, y);
        start = System.nanoTime();
        Image scaledImg2 = image.getScaledInstance(scaleW, scaleH, 
                                            Image.SCALE_SMOOTH);
        g.drawImage(scaledImg2, x, y, null);
        end = System.nanoTime();
        System.out.println("Smooth: " + (end - start)/1000000.0 + "ms");
    }

    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                JFrame frame = new JFrame("Image Scaling");
                frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
                
                frame.add(new ImageScale1());
                frame.validate();
                frame.pack();
                frame.setVisible(true);
            }
        });
    }
}