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package ctsjavacoe.ws.fromjava;
import com.sun.xml.ws.util.ASCIIUtility;
import javax.xml.transform.stream.StreamSource;
import javax.imageio.ImageWriter;
import javax.imageio.ImageIO;
import javax.imageio.stream.ImageOutputStream;
import java.awt.*;
import java.awt.image.BufferedImage;
import java.awt.image.ImageObserver;
import java.awt.image.PixelGrabber;
import java.io.IOException;
import java.io.InputStream;
import java.io.ByteArrayOutputStream;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Iterator;
public class AttachmentHelper {
public static boolean compareStreamSource (StreamSource src1,
StreamSource src2) throws Exception {
if (src1 == null || src2 == null) {
System.out.println ("compareStreamSource - src1 or src2 null!");
return false;
}
InputStream is1 = src1.getInputStream ();
InputStream is2 = src2.getInputStream ();
if ((is1 == null) || (is2 == null)) {
System.out.println ("InputStream of - src1 or src2 null!");
return false;
}
return Arrays.equals (ASCIIUtility.getBytes (is1),
ASCIIUtility.getBytes (is2));
}
public static byte[] getImageBytes(Image image, String type)
throws IOException {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
BufferedImage bufImage = convertToBufferedImage(image);
ImageWriter writer = null;
Iterator i = ImageIO.getImageWritersByMIMEType(type);
if (i.hasNext()) {
writer = (ImageWriter)i.next();
}
if (writer != null) {
ImageOutputStream stream = null;
stream = ImageIO.createImageOutputStream(baos);
writer.setOutput(stream);
writer.write(bufImage);
stream.close();
return baos.toByteArray();
}
return null;
}
private static BufferedImage convertToBufferedImage (Image image)
throws IOException {
if (image instanceof BufferedImage) {
return (BufferedImage)image;
} else {
MediaTracker tracker =
new MediaTracker (null/*not sure how this is used*/);
tracker.addImage (image, 0);
try {
tracker.waitForAll ();
} catch (InterruptedException e) {
throw new IOException (e.getMessage ());
}
BufferedImage bufImage = new BufferedImage (
image.getWidth (null),
image.getHeight (null),
BufferedImage.TYPE_INT_RGB);
Graphics g = bufImage.createGraphics ();
g.drawImage (image, 0, 0, null);
return bufImage;
}
}
public static boolean compareImages (Image image1, Image image2)
throws IOException {
if (image1 == null || image2 == null)
return false;
boolean matched = false;
Rectangle rect = new Rectangle (0, 0,
convertToBufferedImage (image1)
.getWidth (),
convertToBufferedImage (image1)
.getHeight ());
Iterator iter1 = handlePixels (image1, rect);
Iterator iter2 = handlePixels (image2, rect);
while (iter1.hasNext () && iter2.hasNext ()) {
Pixel pixel = (Pixel) iter1.next ();
if (pixel.equals ((Pixel) iter2.next ())) {
matched = true;
} else {
matched = false;
}
}
if (matched)
return true;
return false;
}
private static Iterator handlePixels (Image img, Rectangle rect) {
int x = rect.x;
int y = rect.y;
int w = rect.width;
int h = rect.height;
int[] pixels = new int[w * h];
PixelGrabber pg = new PixelGrabber (img, x, y, w, h, pixels, 0, w);
try {
pg.grabPixels ();
} catch (InterruptedException e) {
System.err.println ("interrupted waiting for pixels!");
return null;
}
if ((pg.getStatus () & ImageObserver.ABORT) != 0) {
System.err.println ("image fetch aborted or errored");
return null;
}
ArrayList tmpList = new ArrayList ();
for (int j = 0; j < h; j++) {
for (int i = 0; i < w; i++) {
tmpList.add (handleSinglePixel (x + i, y + j, pixels[j * w + i]));
}
}
return tmpList.iterator ();
}
private static Pixel handleSinglePixel (int x, int y, int pixel) {
int alpha = (pixel >> 24) & 0xff;
int red = (pixel >> 16) & 0xff;
int green = (pixel >> 8) & 0xff;
int blue = (pixel) & 0xff;
return new Pixel (alpha, red, green, blue);
}
private static class Pixel {
private int a;
private int r;
private int g;
private int b;
Pixel (int a, int r, int g, int b) {
this.a = a;
this.r = r;
this.g = g;
this.b = b;
}
protected boolean equals (Pixel p) {
if (p.a == a && p.r == r && p.g == g && p.b == b)
return true;
return false;
}
}
}
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