Picture Scaler : Paint « 2D Graphics GUI « Java

Home
Java
1.2D Graphics GUI
2.2D Graphics GUI1
3.3D
4.Advanced Graphics
5.Ant
6.Apache Common
7.Chart
8.Class
9.Collections Data Structure
10.Data Type
11.Database SQL JDBC
12.Design Pattern
13.Development Class
14.EJB3
15.Email
16.Event
17.File Input Output
18.Game
19.Generics
20.GWT
21.Hibernate
22.I18N
23.J2EE
24.J2ME
25.JDK 6
26.JNDI LDAP
27.JPA
28.JSP
29.JSTL
30.Language Basics
31.Network Protocol
32.PDF RTF
33.Reflection
34.Regular Expressions
35.Scripting
36.Security
37.Servlets
38.Spring
39.Swing Components
40.Swing JFC
41.SWT JFace Eclipse
42.Threads
43.Tiny Application
44.Velocity
45.Web Services SOA
46.XML
Java Tutorial
Java Source Code / Java Documentation
Java Open Source
Jar File Download
Java Articles
Java Products
Java by API
SCJP
Java » 2D Graphics GUI » PaintScreenshots 
Picture Scaler
   
 
 

import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.RenderingHints;
import java.awt.Transparency;
import java.awt.image.BufferedImage;
import java.net.URL;
import javax.imageio.ImageIO;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.SwingUtilities;
/*
 * PictureScaler.java
 *
 * Created on May 1, 2007, 5:03 PM
 *
 * Copyright (c) 2007, Sun Microsystems, Inc
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   * Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *   * Redistributions in binary form must reproduce the above
 *     copyright notice, this list of conditions and the following
 *     disclaimer in the documentation and/or other materials provided
 *     with the distribution.
 *   * Neither the name of the TimingFramework project nor the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/**
 *
 @author Chet
 */
public class PictureScaler extends JComponent {

    private static BufferedImage picture = null;
    private static final int PADDING = 10;
    private static final double SCALE_FACTOR = .05;
    private int scaleW, scaleH;
    
    /** Creates a new instance of PictureScaler */
    public PictureScaler() {
        try {
            URL url = getClass().getResource("BB.jpg");
            picture = ImageIO.read(url);
            scaleW = (int)(SCALE_FACTOR * picture.getWidth());
            scaleH = (int)(SCALE_FACTOR * picture.getHeight());
            System.out.println("w, h = " + picture.getWidth() ", " + picture.getHeight());
            setPreferredSize(new Dimension(PADDING + ((scaleW + PADDING))
                    scaleH + (* PADDING)));
        catch (Exception e) {
            System.out.println("Problem reading image file: " + e);
            System.exit(0);
        }
    }

    /**
     * Convenience method that returns a scaled instance of the
     * provided BufferedImage.
     
     
     @param img the original image to be scaled
     @param targetWidth the desired width of the scaled instance,
     *    in pixels
     @param targetHeight the desired height of the scaled instance,
     *    in pixels
     @param hint one of the rendering hints that corresponds to
     *    RenderingHints.KEY_INTERPOLATION (e.g.
     *    RenderingHints.VALUE_INTERPOLATION_NEAREST_NEIGHBOR,
     *    RenderingHints.VALUE_INTERPOLATION_BILINEAR,
     *    RenderingHints.VALUE_INTERPOLATION_BICUBIC)
     @param progressiveBilinear if true, this method will use a multi-step
     *    scaling technique that provides higher quality than the usual
     *    one-step technique (only useful in down-scaling cases, where
     *    targetWidth or targetHeight is
     *    smaller than the original dimensions)
     @return a scaled version of the original BufferedImage
     */
    public BufferedImage getFasterScaledInstance(BufferedImage img,
            int targetWidth, int targetHeight, Object hint,
            boolean progressiveBilinear)
    {
        int type = (img.getTransparency() == Transparency.OPAQUE?
            BufferedImage.TYPE_INT_RGB : BufferedImage.TYPE_INT_ARGB;
        BufferedImage ret = img;
        BufferedImage scratchImage = null;
        Graphics2D g2 = null;
        int w, h;
        int prevW = ret.getWidth();
        int prevH = ret.getHeight();
        boolean isTranslucent = img.getTransparency() !=  Transparency.OPAQUE; 

        if (progressiveBilinear) {
            // Use multi-step technique: start with original size, then
            // scale down in multiple passes with drawImage()
            // until the target size is reached
            w = img.getWidth();
            h = img.getHeight();
        else {
            // Use one-step technique: scale directly from original
            // size to target size with a single drawImage() call
            w = targetWidth;
            h = targetHeight;
        }
        
        do {
            if (progressiveBilinear && w > targetWidth) {
                w /= 2;
                if (w < targetWidth) {
                    w = targetWidth;
                }
            }

            if (progressiveBilinear && h > targetHeight) {
                h /= 2;
                if (h < targetHeight) {
                    h = targetHeight;
                }
            }

            if (scratchImage == null || isTranslucent) {
                // Use a single scratch buffer for all iterations
                // and then copy to the final, correctly-sized image
                // before returning
                scratchImage = new BufferedImage(w, h, type);
                g2 = scratchImage.createGraphics();
            }
            g2.setRenderingHint(RenderingHints.KEY_INTERPOLATION, hint);
            g2.drawImage(ret, 00, w, h, 00, prevW, prevH, null);
            prevW = w;
            prevH = h;

            ret = scratchImage;
        while (w != targetWidth || h != targetHeight);
        
        if (g2 != null) {
            g2.dispose();
        }

        // If we used a scratch buffer that is larger than our target size,
        // create an image of the right size and copy the results into it
        if (targetWidth != ret.getWidth() || targetHeight != ret.getHeight()) {
            scratchImage = new BufferedImage(targetWidth, targetHeight, type);
            g2 = scratchImage.createGraphics();
            g2.drawImage(ret, 00null);
            g2.dispose();
            ret = scratchImage;
        }
        
        return ret;
    }
    
    /**
     * Render all scaled versions 10 times, timing each version and 
     * reporting the results below the appropriate scaled image.
     */
    protected void paintComponent(Graphics g) {
        // Scale with NEAREST_NEIGHBOR
        int xLoc = PADDING, yLoc = PADDING;
        long startTime, endTime;
        float totalTime;
        int iterations = 10;
        ((Graphics2D)g).setRenderingHint(RenderingHints.KEY_INTERPOLATION, 
                RenderingHints.VALUE_INTERPOLATION_NEAREST_NEIGHBOR);
        startTime = System.nanoTime();
        for (int i = 0; i < iterations; ++i) {
            g.drawImage(picture, xLoc, yLoc, scaleW, scaleH, null);
        }
        endTime = System.nanoTime();
        totalTime = (float)((endTime - startTime1000000/ iterations;
        g.drawString("NEAREST ", xLoc, yLoc + scaleH + PADDING);
        g.drawString(Float.toString(totalTime" ms"
                xLoc, yLoc + scaleH + PADDING + 10);
        System.out.println("NEAREST: " ((endTime - startTime1000000));
        
        // Scale with BILINEAR
        xLoc += scaleW + PADDING;
        ((Graphics2D)g).setRenderingHint(RenderingHints.KEY_INTERPOLATION, 
                RenderingHints.VALUE_INTERPOLATION_BILINEAR);
        startTime = System.nanoTime();
        for (int i = 0; i < iterations; ++i) {
            g.drawImage(picture, xLoc, yLoc, scaleW, scaleH, null);
        }
        endTime = System.nanoTime();
        totalTime = (float)((endTime - startTime1000000/ iterations;
        g.drawString("BILINEAR", xLoc, yLoc + scaleH + PADDING);
        g.drawString(Float.toString(totalTime" ms"
                xLoc, yLoc + scaleH + PADDING + 10);
        System.out.println("BILINEAR: " ((endTime - startTime1000000));

        // Scale with BICUBIC
        xLoc += scaleW + PADDING;
        ((Graphics2D)g).setRenderingHint(RenderingHints.KEY_INTERPOLATION, 
                RenderingHints.VALUE_INTERPOLATION_BICUBIC);
        startTime = System.nanoTime();
        for (int i = 0; i < iterations; ++i) {
            g.drawImage(picture, xLoc, yLoc, scaleW, scaleH, null);
        }
        endTime = System.nanoTime();
        totalTime = (float)((endTime - startTime1000000/ iterations;
        g.drawString("BICUBIC", xLoc, yLoc + scaleH + PADDING);
        g.drawString(Float.toString(totalTime" ms"
                xLoc, yLoc + scaleH + PADDING + 10);
        System.out.println("BICUBIC: " ((endTime - startTime1000000));

        // Scale with getScaledInstance
        xLoc += scaleW + PADDING;
        startTime = System.nanoTime();
        for (int i = 0; i < iterations; ++i) {
            Image scaledPicture = picture.getScaledInstance(scaleW, scaleH, 
                    Image.SCALE_AREA_AVERAGING);
            g.drawImage(scaledPicture, xLoc, yLoc, null);
        }
        endTime = System.nanoTime();
        totalTime = (float)((endTime - startTime1000000/ iterations;
        g.drawString("getScaled", xLoc, yLoc + scaleH + PADDING);
        g.drawString(Float.toString(totalTime" ms"
                xLoc, yLoc + scaleH + PADDING + 10);
        System.out.println("getScaled: " ((endTime - startTime1000000));
        
        // Scale with Progressive Bilinear
        xLoc += scaleW + PADDING;
        startTime = System.nanoTime();
        for (int i = 0; i < iterations; ++i) {
            Image scaledPicture = getFasterScaledInstance(picture, scaleW, scaleH, 
                    RenderingHints.VALUE_INTERPOLATION_BILINEAR, true);
            g.drawImage(scaledPicture, xLoc, yLoc, null);
        }
        endTime = System.nanoTime();
        totalTime = (float)((endTime - startTime1000000/ iterations;
        g.drawString("Progressive", xLoc, yLoc + scaleH + PADDING);
        g.drawString(Float.toString(totalTime" ms"
                xLoc, yLoc + scaleH + PADDING + 10);
        System.out.println("Progressive: " ((endTime - startTime1000000));
    }
    
    private static void createAndShowGUI() {
        JFrame f = new JFrame();
        f.setLayout(new BorderLayout());
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        PictureScaler test = new PictureScaler();
        //f.setSize(scaleW + (4 * PADDING), scaleH + (4 * PADDING));
        f.add(test);        
        f.validate();
        f.pack();
        f.setVisible(true);
    }
    
    public static void main(String args[]) {
        Runnable doCreateAndShowGUI = new Runnable() {
            public void run() {
                createAndShowGUI();
            }
        };
        SwingUtilities.invokeLater(doCreateAndShowGUI);
    }
}

 

   
    
    
  
Related examples in the same category
1.Draw stringDraw string
2.Draw canvas with color and textDraw canvas with color and text
3.Anti AliasAnti Alias
4.PaintsPaints
5.Program to draw gridsProgram to draw grids
6.PlotPlot
7.Radial GradientRadial Gradient
8.Rotation About Center
9.Safe Repaint
10.Scale Test
11.Scaling Methods
12.Simple Attributes of painting
13.Two Stops GradientTwo Stops Gradient
14.Bad vs. Good Primitive Rendering
15.Static methods for some common painting functions
16.Set Text Anti Aliasing
17.Graphics Util: draw shapes and text
18.Utilties for painting visual effects
19.Your own Graphics2D
20.Reads a Paint object that has been serialised
21.A panel that displays a paint sample.
www.java2java.com | Contact Us
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.