Pixelgrabber and Vectors, changes not happening.

From:
 bH <bherbst65@hotmail.com>
Newsgroups:
comp.lang.java.help
Date:
Fri, 27 Jul 2007 16:00:42 -0700
Message-ID:
<1185577242.681140.217870@i38g2000prf.googlegroups.com>
Hi All,

I am trying to use pixelgrabber, use vectors and storing the results.
The program below is my program. However the "if " condition is not
recognized during a run at "private String RestateClrLine (String
mSt) {" ....
and thus the changes are not reflected in the output file saved.

Simply put, I am trying to change the color of the "000000" to any
other color, say "ff0000" and it is not happening.

TIA

bH

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.image.*;
import java.io.*;
import java.util.*;

public class applicPxlgrabMTstoBytes {

  public static void main(String[] args) {
    JFrame frame = new ImageProcessingFrame();
    frame.show();
  }
}

class ImageProcessingFrame
    extends JFrame
    implements ActionListener {

  public ImageProcessingFrame() {
    setTitle("PxlgrabMTstoBytes");

    int frameX = 600;
    int frameY = 800;
    setSize(frameX, frameY);
    addWindowListener(new WindowAdapter() {
      public void windowClosing(WindowEvent e) {
        System.exit(0);
      }
    });

    Container contentPane = getContentPane();
    panel = new ImageProcessingPanel();
    contentPane.add(panel, "Center");

    JMenu fileMenu = new JMenu("File");
    openItem = new JMenuItem("Open");
    openItem.addActionListener(this);
    fileMenu.add(openItem);

    exitItem = new JMenuItem("Exit");
    exitItem.addActionListener(this);
    fileMenu.add(exitItem);

    JMenuBar menuBar = new JMenuBar();
    menuBar.add(fileMenu);
    setJMenuBar(menuBar);
  }

  public void actionPerformed(ActionEvent evt) {
    Object source = evt.getSource();
    if (source == openItem) {
      JFileChooser chooser = new JFileChooser();
      chooser.setCurrentDirectory(new File("images"));
      chooser.setFileFilter(new javax.swing.filechooser.FileFilter() {
        public boolean accept(File f) {
          String name = f.getName().toLowerCase();
          return name.endsWith(".gif")
              || name.endsWith(".jpg")
              || name.endsWith(".jpeg")
              || name.endsWith(".png") // added this on 17 June 2003
              || f.isDirectory();
        }

        public String getDescription() {
          return "Image files";
        }
      });

      int r = chooser.showOpenDialog(this);
      if (r == JFileChooser.APPROVE_OPTION) {
        String name = chooser.getSelectedFile().getAbsolutePath();
        panel.loadImage(name);
      }
    }
    else if (source == exitItem) {
      System.exit(0);
    }

  }

  private ImageProcessingPanel panel;
  private JMenuItem openItem;
  private JMenuItem exitItem;
  //private RestateClrLine mSt;
}

class ImageProcessingPanel
    extends JPanel {

  public void paintComponent(Graphics g) {
    super.paintComponent(g);
    if (image != null) {
      g.drawImage(image, 0, 0, null);
    }
  }

  public void loadImage(String name) {
    String sourceCodeString;
    int iwidth;
    int iheight;
    int scansize;
    int[] pixels;
    Vector vectorColorData = new Vector();
    Vector vectorDimensions = new Vector();
    Image loadedImage = Toolkit.getDefaultToolkit().getImage(name);
    MediaTracker tracker = new MediaTracker(this);
    tracker.addImage(loadedImage, 0);
    try {
      tracker.waitForID(0);
      image = new BufferedImage(600, 800, BufferedImage.TYPE_INT_RGB);
      Graphics2D g2 = image.createGraphics();
      g2.drawImage(loadedImage, 0, 0, null);

    }
    catch (InterruptedException e) {
    }

    try {
      iwidth = loadedImage.getWidth(null);
      vectorDimensions.addElement(Integer.toString(iwidth));
      iheight = loadedImage.getHeight(null);
      vectorDimensions.addElement(Integer.toString(iheight));
      System.out.println("the width is " + iwidth);
      System.out.println("the height is " + iheight);
      scansize = iwidth * iheight;
      pixels = new int[scansize];
      PixelGrabber myPixelGrabber = new PixelGrabber(image, 0, 0,
iwidth,
          iheight, pixels, 0, iwidth);
      myPixelGrabber.grabPixels();

      String mSet;
      String s;
      String si;
      String mest;
      int cr;
      int cg;
      int cb;
      int hcb;
      for (int i = 0; i < scansize; i++) {
        mSet = "";
        s = Integer.toString(i) + ". = Red Hex " +
            Integer.toString( ( (int[]) pixels)[i] >> 16 & 0xff, 16);
        si = "";

        //cr = (((int[])pix)[i] >> 16 & 0xff); //, 16);
        si = Integer.toString( ( (int[]) pixels)[i] >> 16 & 0xff, 16);
        if (si.length() < 2) { // add an extra "0" in front of the
single
          si = "0" + si;
        }
        mSet = mSet + si;
        s = Integer.toString(i) + ". = Green Hex " +
            Integer.toString( ( (int[]) pixels)[i] >> 8 & 0xff, 16);
        si = "";

        //cg = (((int[])pix)[i] >> 8 & 0xff); //, 16);
        si = Integer.toString( ( (int[]) pixels)[i] >> 8 & 0xff, 16);
        if (si.length() < 2) {
          si = "0" + si;
        }
        mSet = mSet + si;
        s = Integer.toString(i) + ". = Blue Hex " +
            Integer.toString( ( (int[]) pixels)[i] & 0xff, 16);
        si = "";

        //cb = (((int[])pix)[i] & 0xff); //, 16);
        si = Integer.toString( ( (int[]) pixels)[i] & 0xff, 16);
        if (si.length() < 2) {
          si = "0" + si;
        }

        mSet = mSet + si;
        RestateClrLine(mSet);
        vectorColorData.addElement(mSet);

      }
      System.out.println(
          "Will be finsihed storing color bytes into a file after
image appears ");
    }
    catch (InterruptedException ie) {
      System.out.println("Error Gathering Pixels");
    }

    try {
      FileOutputStream fout = new
FileOutputStream("ColorPixlData.txt");
      ObjectOutputStream out = new ObjectOutputStream(fout);
      out.writeObject(vectorDimensions);
      out.writeObject(vectorColorData);
      out.flush();
      out.close();
      repaint();
    }
    catch (IOException e) {
      System.out.println("error with write to file");
    }

    repaint();
  }

  private void filter(BufferedImageOp op) {
    BufferedImage filteredImage
        = new BufferedImage(image.getWidth(), image.getHeight(),
                            image.getType());

    op.filter(image, filteredImage);
    image = filteredImage;
    repaint();
  }

  private BufferedImage image;

 // look at a mStr value
 private String RestateClrLine (String mSt) {
    String res ="";
    System.out.println(mSt );
    if (mSt == "000000"){
      res = "ff0000";
      System.out.println("Y");
     }
    else {
      res = mSt;
      System.out.println("N");
     }
 return res;
 }

}
// end of program applicPxlgrabMTstoBytes

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