I must be doing something wrong, but I can't find it.

Question

Hi all.
I had this code working two or three iterations ago, but in moving some functionality from one class (where it did not belong) to another (where it made more sense to deal with it) I broke something. Below, you will see my ImageViewer class source:
package us.state.pa.dli.imagetracker;
import java.awt.*;
import java.awt.image.*;
import javax.media.jai.*;
* @author ghurley
public class ImageViewer extends ScrollPane {
     static final long serialVersionUID = 1;
     private ImageFile iFile;
     //private Image i;
     private Graphics2D g2;
     private BufferedImage mBufferedImage;
     private MediaTracker mt;
     public ImageViewer() {
          // TODO Auto-generated constructor stub
      * This method makes the content of the ImageViewer pane.
     public void makeContent() {
          iFile = new ImageFile("D:\\eclipse\\plugins\\com.yoxos.yim_2.2.2\\yoxos32.png");
          mt = new MediaTracker(this);
          this.renderImage();
          this.setVisible(true);
     public void replaceImage(ImageFile imFile) {
          //mt.removeImage(i);
          mt.removeImage(mBufferedImage);
          this.iFile = imFile;
          this.renderImage();
          this.repaint();
     public void renderImage() {
          String name = iFile.getAbsolutePath();
          //BufferedImage mBufferedImage = iFile.getB();
          this.loadOther(name);
         if (mBufferedImage.equals(null)) {
//              System.out.println("No image loaded!");
              return;
         //System.out.println("mBufferedImage is a: "+mBufferedImage.getClass().getName());
         int x, y;
//         System.out.println("Width: "+this.iFile.getWidth());
//         System.out.println("Height: "+this.iFile.getHeight());
         x = this.centerImage(this.iFile.getWidth(),'x'); 
         y = this.centerImage(this.iFile.getHeight(),'y');
//         System.out.println("x: "+x);
//         System.out.println("y: "+y);
//         System.out.println("scaled width: "+mBufferedImage.getWidth(this));
//         System.out.println("scaled height: "+mBufferedImage.getHeight(this));
         if (iFile.getHeight() > this.getHeight() || iFile.getWidth() > this.getHeight()) {
              mBufferedImage = iFile.showMeScaled();
              System.out.println("scaling down");
//              g.drawImage(iFile.showMeScaled(), x, y, this);
         } else if (iFile.getHeight() < this.getHeight() && iFile.getWidth() < this.getWidth()) {
              mBufferedImage = iFile.showMeScaled();
              System.out.println("scaling up");
//              g.drawImage(iFile.showMeScaled(), x, y, this);
         } else {
              mBufferedImage = iFile.showMe();
              System.out.println("not scaling");
              System.out.println(iFile.getName()+":\n\tWidth:"+iFile.getWidth()+"\n\tHeight:"+iFile.getHeight()+"\n\tx:"+x+"\n\ty:"+y);
              System.out.println("This Panel:\n\tWidth:"+this.getWidth()+"\n\tHeight:"+this.getHeight());
//              g.drawImage(iFile.getB(), x, y, this);
         this.setGraphics(mBufferedImage.createGraphics());
         g2.drawImage(mBufferedImage, 0, 0, this);
//         System.out.println(this.g2.toString());
//         System.out.println(mBufferedImage.createGraphics().toString());
//         g = this.g2;
//         g2 = this.getGraphics();
          //Graphics g2 = this.getGraphics();
          //showImage(mBufferedImage);
          if (!g2.equals(null)) myPaint();               
//     private void showImage(BufferedImage bufferedImage) {
//          // TODO Auto-generated method stub
     private void loadOther(String name) {
//          double myScale;
          iFile.setQ(this);
          iFile.setSize(this.getSize());
//          i = iFile.showThumbnail();
          mBufferedImage = iFile.showMe();
//          myScale  = this.getScale();
//          System.out.println(myScale);
//          if (this.getWidth() < iFile.getWidth() || this.getHeight() < iFile.getHeight()) {
//               iFile.setScale(myScale);
//               mBufferedImage = iFile.showMeScaled();
          mt.addImage(mBufferedImage, 0);
//          mt.addImage(mBufferedImage, 0);
          try {
               mt.waitForID(0);
          } catch (InterruptedException ie) {
               System.out.println("Oops.  Exception: " + ie.getMessage());
               return;
     private int centerImage(int coordinate, char axis){
          int displacement = 0;
          if (axis == 'x') {
               displacement = (this.getWidth() - coordinate) / 2;
          } else {
               displacement = (this.getHeight() - coordinate) / 2;
          return displacement;
      * @param args
     public void myParseArgs(String[] args) {
          this.iFile = new ImageFile(args[0]);
     private void myPaint() {
          this.paint(g2);
     public void paint(Graphics2D g) {
//         if (i.equals(null)) return;
//         if (mBufferedImage.equals(null)) return;
//         System.out.println("mBufferedImage is a: "+mBufferedImage.getClass().getName());
//         int x, y;
//         System.out.println("Width: "+this.iFile.getWidth());
//         System.out.println("Height: "+this.iFile.getHeight());
//         x = this.centerImage(this.iFile.getWidth(),'x'); 
//         y = this.centerImage(this.iFile.getHeight(),'y');
//         System.out.println("x: "+x);
//         System.out.println("y: "+y);
//         System.out.println("scaled width: "+mBufferedImage.getWidth(this));
//         System.out.println("scaled height: "+mBufferedImage.getHeight(this));
//         if (iFile.getHeight() > this.getHeight() || iFile.getWidth() > this.getHeight()) {
//              mBufferedImage = iFile.showMeScaled();
////              g.drawImage(iFile.showMeScaled(), x, y, this);
//         } else if (iFile.getHeight() < this.getHeight() && iFile.getWidth() < this.getWidth()) {
//              mBufferedImage = iFile.showMeScaled();
////              g.drawImage(iFile.showMeScaled(), x, y, this);
//         } else {
//              mBufferedImage = iFile.showMe();
//              System.out.println(iFile.getName()+":\n\tWidth:"+iFile.getWidth()+"\n\tHeight:"+iFile.getHeight()+"\n\tx:"+x+"\n\ty:"+y);
//              System.out.println("This Panel:\n\tWidth:"+this.getWidth()+"\n\tHeight:"+this.getHeight());
////              g.drawImage(iFile.getB(), x, y, this);
//         this.setGraphics(mBufferedImage.createGraphics());
//         g = this.g2;
//         g.drawImage(mBufferedImage, 0, 0, this);
          g.drawString("Hiya", 0, 0);
//          g.drawImage(iFile.showThumbnail(), 0, 0, this);
     public Insets getInsets() {
          Insets in = super.getInsets();
          if (in ==  null) {
               in = new Insets(0, 0, 0, 0);
          return in;
     private void setGraphics(Graphics2D g) {
          this.g2 = g;
     public Graphics2D getGraphics() {
          //WritableRaster w = iFile.getB().getRaster();
          //BufferedImage b = new BufferedImage(this.getWidth(), this.getHeight(), BufferedImage.TYPE_INT_RGB);
          BufferedImage b = iFile.showMe();
//          System.out.println("Height Should Be:"+b.getHeight());
          //System.out.println(g2.)
//          g2 = b.createGraphics();
          g2 = iFile.getGraphics();
          g2.setColor(Color.BLUE);
          //g2 = (Graphics2D)g2.create(0, 0, this.getWidth(), this.getHeight());
          return g2;
}The ImageFile class has source as follows:
package us.state.pa.dli.imagetracker;
import java.awt.*;
import java.awt.geom.*;
import java.awt.image.*;
import java.awt.image.renderable.*;
import java.io.*;
import java.net.*;
import java.util.*;
import javax.media.jai.*;
import com.sun.media.jai.codec.*;
import javax.imageio.*;
public class ImageFile extends File {
     static final long serialVersionUID = 1;
     private String parentDir;
     private double scale;
     private int width, height;
     private double scaledWidth, scaledHeight;
     //private Image i;
     private BufferedImage b;
     private Directory d;
     private Component q;
      * @param arg0 The parent directory
      * @param arg1 The child file
      * <p>Creates a new File instance from a parent abstract pathname and a child pathname string.
     public ImageFile(File arg0, String arg1) {
          super(arg0, arg1);
          this.setParentDir(this.getParent());
          this.setScale(1.0);
          this.setImageSize();
      * @param arg0 The parent directory
      * @param arg1 The child file
      * <p>Creates a new File instance from a parent pathname string and a child pathname string.
     public ImageFile(String arg0, String arg1) {
          super(arg0, arg1);
          this.setParentDir(this.getParent());
          this.setScale(1.0);
          this.setImageSize();
      * @param arg0
      * <p>Creates a new File instance by converting the given pathname string into an abstract pathname.
     public ImageFile(String arg0) {
          super(arg0);
          this.setParentDir(this.getParent());
          this.setScale(1.0);
          this.setImageSize();
      * @param arg0
      * <p>Creates a new File instance by converting the given file: URI into an abstract pathname.
     public ImageFile(URI arg0) {
          super(arg0);
          // TODO Auto-generated constructor stub
          this.setParentDir(this.getParent());
          this.setScale(1.0);
          this.setImageSize();
//      * @param prefix
//      * @param suffix
//     public void createATempFile(String prefix, String suffix) {
//          d = new Directory(this.parentDir);
//          try {
//               File f = super.createTempFile(prefix, suffix,d);
//          } catch (IOException e) {
//               // TODO Auto-generated catch block
//               e.printStackTrace();
//     public ImageFile createImageFile(Image i) {
//          ImageFile newIfile = null;
//          ImageEncoder ie = null;
//          File newFile;
//          String []foundThese;
//          String fileType = "BMP";
//          String extension = this.getName().substring(this.getName().lastIndexOf('.'));
//          String timestamp = "" + new java.util.Date().getTime();
//          String myOS = System.getProperty("os.name");
//          char mySep;
//          if (myOS.substring(0, 7).equalsIgnoreCase("Windows")) {
//               mySep = '\\';
//          } else {
//               mySep = '/';
//          this.createATempFile(timestamp, extension);
//          foundThese = (this.d.searchFor(timestamp));
//          //take the first one
//          newFile = new File(foundThese[0]);
//          System.out.println(newFile.getPath());
////          int[] pixels = new int[(int)(this.scaledHeight*this.scaledWidth)];
////          PixelGrabber pg = new PixelGrabber(i, 0, 0, (int)scaledWidth, (int)scaledHeight,pixels,0,0);
////          try {
////               pg.grabPixels();
////          } catch (InterruptedException e1) {
////               // TODO Auto-generated catch block
////               e1.printStackTrace();
//////          if(!newIfile.exists()) {
//////               try {
//////                    newIfile.createNewFile();
//////               } catch (IOException e) {
//////                    // TODO Auto-generated catch block
//////                    e.printStackTrace();
//          FileOutputStream fos;
//          try {
//               fos= new FileOutputStream(newFile);
//               if (extension.equalsIgnoreCase(".TIF") || extension.equalsIgnoreCase(".BMP")) {
//                    TIFFEncodeParam tep = new TIFFEncodeParam();
//                    fileType = "TIFF";
//                    ie = (ImageEncoder)new com.sun.media.jai.codecimpl.TIFFImageEncoder(fos, tep);
//               } else if (extension.equalsIgnoreCase(".BMP")) {
//                    BMPEncodeParam bep = new BMPEncodeParam();
//                    ie = (ImageEncoder)new com.sun.media.jai.codecimpl.BMPImageEncoder(fos, bep);
//               } else if (extension.equalsIgnoreCase(".PNG")) {
//                    PNGEncodeParam pep = new PNGEncodeParam.Palette();
//                    fileType = "PNG";
//                    ie = (ImageEncoder)new com.sun.media.jai.codecimpl.PNGImageEncoder(fos, pep);
//               } else if (extension.equalsIgnoreCase(".GIF")) {
//                    System.out.println("GIF Images not supported");
//               } else if (extension.equalsIgnoreCase(".JPG")) {
//                    JPEGEncodeParam jep = new JPEGEncodeParam();
//                    fileType = "JPEG";
//                    ie = (ImageEncoder)new com.sun.media.jai.codecimpl.JPEGImageEncoder(fos, jep);
//               } else {
//                    System.out.println("File format not supported");
//          } catch (FileNotFoundException e) {
//               // TODO Auto-generated catch block
//               e.printStackTrace();
//          ImageWriter iw = (ImageWriter)ImageIO.getImageWritersBySuffix(extension.substring(1)).next();
//          ParameterBlock jpb = new ParameterBlock().addSource(i);
//          OperationRegistry ory = JAI.getDefaultInstance().getOperationRegistry();
//          String [] temp = ory.getRegistryModes();
//          String []temp2;
//          for (int which = 0; which < temp.length; which++) {
//               temp2 = ory.getDescriptorNames(temp[which]);
//               System.out.println("\t"+temp[which]+":");
//               for (int cual = 0; cual < temp2.length; cual++) {
//                    System.out.println("\t\t"+temp2[cual]);
//          ParameterBlock scaler = new ParameterBlock().addSource(i);
//          scaler.add(newFile);
//          scaler.add(new Dimension((int)this.scaledWidth, (int)this.scaledHeight));
//          RenderableOp scaleIt = new RenderableOp("scale",scaler);
//          AffineTransform at = new AffineTransform();
//          RenderContext rc = new RenderContext(at);
//          RenderedImage ri = scaleIt.createRendering(rc);
//          try {
//               jpb.set(ImageIO.createImageOutputStream(newFile), 0);
//               jpb.set(Boolean.TRUE, 5);
//               jpb.set(new Dimension((int)this.scaledWidth, (int)this.scaledHeight),6);
//               jpb.set(iw, 13);
//               //System.out.println(JAI.getDefaultInstance().getOperationRegistry())
//               RenderedOp op = JAI.create("FileStore", jpb);
//          } catch (IOException e) {
//               // TODO Auto-generated catch block
//               e.printStackTrace();
////          RenderedOp op = JAI.create("filestore", i,foundThese[0],fileType);
////          RenderedOp op = JAI.create("filestore", image, filename, filetype, encodeParam);
//          //          if (! ie.equals(null)) {
////               newIfile = new ImageFile(fred[0]);
////               RenderedImage ri = newIfile.getB();
////               try {
////                    ie.encode(ri);
////               } catch (IOException e) {
////                    // TODO Auto-generated catch block
////                    e.printStackTrace();
//          newIfile = new ImageFile(newFile.getPath());
//          return newIfile;
      * @return A URI representing this file.
     public URI getURI() {
          return this.toURI();
     public URL getURL() {
          URL u = null;
          try {
               u = this.getURI().toURL();
          } catch (MalformedURLException e) {
               // TODO Auto-generated catch block
               e.printStackTrace();
          //System.out.println(u);
          return u;
     public boolean matchFileName(String namePart) {
          boolean matches = false;
          matches = this.getPath().contains((CharSequence)namePart);
          return matches;
     public String getParentDir() {
          return this.parentDir;
     public void setParentDir() {
          int endIndex = this.getPath().lastIndexOf(File.pathSeparatorChar);
          this.setParentDir(this.getPath().substring(0, endIndex));
     public void setParentDir(String pathName) {
          this.parentDir = pathName;
     public void move(String newpath) {
          //String myPath = this.getPath();
          String myName = this.getName();
//          System.out.println(myName);
          //char sep = File.pathSeparatorChar;
          String newName = "";
          //int startName = myPath.length();
          //newName =newName + newpath + sep + myName;
          newName =newName + newpath + myName;
//          System.out.println(newName);
          File f = new File(newName);
          this.renameTo(f);
//     public Image show() {
//          i = Toolkit.getDefaultToolkit().getImage(this.getPath());
//          System.out.println(Toolkit.getDefaultToolkit().getImage(this.getPath()).toString());
//          return i;          
     public Image showThumbnail() {
          Image i;
          //this.showMeScaled();
//          System.out.println("Image width: "+width);
//          System.out.println("Image height: "+height);
//          System.out.println(b);
          i = b.getScaledInstance((int)scaledWidth, (int)scaledHeight, Image.SCALE_AREA_AVERAGING);
          System.out.println(i);
          return i;     
     public BufferedImage showMeScaled() {
          BufferedImage b;
          //b = showMe();
          RenderedOp ro = JAI.create("fileload", this.getPath());
          PlanarImage pi1 = ro.getNewRendering();
          //ParameterBlock params = new ParameterBlock().addSource(b);
          ParameterBlock params = new ParameterBlock().addSource(pi1);
          //HashMap hm = new HashMap();
          params.add((float)this.getScale());     // x
          params.add((float)this.getScale());     // y
          params.add((float)this.width);
          params.add((float)this.height);
          params.add(Interpolation.getInstance(Interpolation.INTERP_BILINEAR));
//          ImageLayout il = new ImageLayout(b);
//          il.setHeight((int)this.scaledHeight);
//          il.setWidth((int)this.scaledWidth);
          RenderedOp scaled = JAI.create("Scale", params);
          b = scaled.getAsBufferedImage();
//          System.out.println(b.getHeight());
//          System.out.println(b.getWidth());
//          BufferedImage b = showMe();
//          //Image temp = this.show();
//          //height = i.getHeight(q);
//          if (height <= 0) height = q.getHeight();
//          //width =  i.getWidth(q);
//          if (width <= 0) width = q.getWidth();
//          System.out.println("Height: "+height+", Width: "+width);
//          this.scaleImage();
          //temp = i.getScaledInstance(width, height, BufferedImage.SCALE_AREA_AVERAGING);
          //b = new BufferedImage(width, height,BufferedImage.TYPE_INT_RGB);
          //i = temp;
//          b = (BufferedImage)i.getScaledInstance(width, height, BufferedImage.SCALE_AREA_AVERAGING);
//          b.getScaledInstance(width, height, BufferedImage.SCALE_AREA_AVERAGING);
          //b.getSubimage(x, y, w, h)
          //Image temp = b.getScaledInstance(width, height, BufferedImage.SCALE_AREA_AVERAGING);
          //b = (BufferedImage)temp;
          return b;
     public BufferedImage showMe() {
          RenderedOp ro = JAI.create("fileload", this.getPath());
          b = ro.getAsBufferedImage();
          height = ro.getHeight();
          width = ro.getWidth();
          return b;
//     private void scaleImage() {
//          this.height = (int)((double)this.height * this.scale);
//          this.width = (int)((double)this.width * this.scale);
      * @return the scale
     public double getScale() {
          return scale;
      * @param scale the scale to set
     public void setScale(double scale) {
          this.scale = scale;
      * @return the q
     public Component getQ() {
          return q;
      * @param q the q to set
     public void setQ(Component q) {
          this.q = q;
      * @return the b
     public BufferedImage getB() {
          return b;
      * @param b the b to set
     public void setB(BufferedImage b) {
          this.b = b;
      * @return the height
     public int getHeight() {
          return (int)this.scaledHeight;
      * @return the width
     public int getWidth() {
          return (int)this.scaledWidth;
      * @param height the height to set
     private void setHeight(int height) {
          this.scaledHeight = (double)height;
      * @param width the width to set
     private void setWidth(int width) {
          this.scaledWidth = (double)width;
     private int makeInt(double rate) {
          int iOut;
          iOut = (int) (1000000.0 * rate);
          return iOut;
     public void setSize(Dimension d) {
          this.setHeight(d.height - 20);
          this.setWidth(d.width - 20);
          double temp;
          double ratio1, ratio2;
          ratio1 = (double)this.height / (double)this.width;
          ratio2 = (double) (this.scaledHeight / this.scaledWidth);
          if (makeInt(ratio2) >= makeInt(ratio1)) {
               temp = (double)this.scaledWidth / (double)this.width;
               this.setScale(temp);
          } else {
               temp = (double)this.scaledHeight / (double)this.height;
               this.setScale(temp);               
          this.setSize((int)(scale*(double)width), (int)(scale*(double)height));
     public void setSize(int width, int height) {
          this.setWidth(width);
          this.setHeight(height);
     public Dimension getSize() {
          Dimension d = new Dimension();
          d.setSize(this.width, this.height);
          return d;
     private void setImageSize() {
          this.b = this.showMe();
          this.setImageHeight();
          this.setImageWidth();
          this.setHeight(this.height);
          this.setWidth(this.width);
     private void setImageHeight() {
          this.height=b.getHeight();
     private void setImageWidth() {
          this.width=b.getWidth();
     public ColorModel getColorModel() {
          return b.getColorModel();
     public Graphics2D getGraphics() {
          return b.createGraphics();
      * @return the d
     public Directory getD() {
          return d;
      * @param d the d to set
     public void setD(Directory d) {
          this.d = d;
}My problem is in the display of the image, though, so only the first class is really necessary, but I was wondering if my computations of the size of the BufferedImage could have caused my problems. Additionally, this code seems to choke when displaying large TIFF files, such as those downloaded from NASA's website. My application will not use such large TIFF files, but it gives me a perfect testing ground. The error I get when loading such files is a "Java-AWT:Event Error" involving the "Memory Heap". Can someone familiar with the JAI let me know what I am doing wrong? This worked well without using JAI functionality to scale the BufferedImage, but when I tried to do that, it freaked on me with the display. I get a blank panel. System.out.println() commands are inserted to report status, and commented lines are from earlier attempts.
Thanks,
Garry

Answer 1

Well, I'll be damned, it seems I need to copy an object on
ALL the frames and make it Alpha 0% if I want the object to be
accessible through ActionScript. I actually got 5 frames and if I
only put it on the first frame, it won't be null but mouseDown
eventListener won't work... Hmmm that's the first thing I find that
looks like a patch with ActionScript 3.