Create new image from source image
/**
* COPYRIGHT. Harry Wu 2010. ALL RIGHTS RESERVED.
* Project: EasyPhoto
* Author: Harry Wu <harrywu304@gmail.com>
* Created On: Jun 28, 2008 5:12:21 PM
*
*/
//package org.shaitu.easyphoto.util;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.awt.image.ColorModel;
import java.awt.image.IndexColorModel;
import java.awt.image.WritableRaster;
import java.io.File;
import java.util.Iterator;
import java.util.List;
import javax.imageio.IIOImage;
import javax.imageio.ImageIO;
import javax.imageio.ImageTypeSpecifier;
import javax.imageio.ImageWriteParam;
import javax.imageio.ImageWriter;
import javax.imageio.plugins.jpeg.JPEGImageWriteParam;
import javax.imageio.stream.ImageOutputStream;
import javax.swing.ImageIcon;
/**
* userful methods about image
* @author harry
*/
public class ImageUtil {
public final static String JPEG = "jpeg";
public final static String JPG = "jpg";
public final static String BMP = "bmp";
public final static String PNG = "png";
public final static String GIF = "gif";
public final static String TIFF = "tiff";
public final static String TIF = "tif";
/**
* create new image from source image
* @param srcImg source image
* @param targetWidth target image width
* @param targetHeight target image height
* @return new image with specify width and height
*/
public static BufferedImage createNewImage(BufferedImage srcImg,int targetWidth,int targetHeight){
BufferedImage targetImg = null;
int type = srcImg.getType();
if (type == BufferedImage.TYPE_CUSTOM) {
ColorModel cm = srcImg.getColorModel();
WritableRaster raster = cm.createCompatibleWritableRaster(targetWidth,
targetHeight);
boolean alphaPremultiplied = cm.isAlphaPremultiplied();
targetImg = new BufferedImage(cm, raster, alphaPremultiplied, null);
} else {
targetImg = new BufferedImage(targetWidth, targetHeight, type);
}
return targetImg;
}
}
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