Creates a scaled copy of the source image.
/*
* ImageUtil.java
*
* Created on 15 May 2006, 01:12
*
* To change this template, choose Tools | Template Manager
* and open the template in the editor.
*/
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.image.BufferedImage;
/**
* Provides utility methods for handling images (<tt>java.awt.BufferedImage</tt>
* )
*
* @author Ian McDonagh
*/
public class ImageUtil {
/**
* Creates a scaled copy of the source image.
*
* @param src
* source image to be scaled
* @param width
* the width for the new scaled image in pixels
* @param height
* the height for the new scaled image in pixels
* @return a copy of the source image scaled to <tt>width</tt> x
* <tt>height</tt> pixels.
*/
public static BufferedImage scaleImage(BufferedImage src, int width,
int height) {
Image scaled = src.getScaledInstance(width, height, 0);
BufferedImage ret = null;
/*
* ColorModel cm = src.getColorModel(); if (cm instanceof
* IndexColorModel) { ret = new BufferedImage( width, height,
* src.getType(), (IndexColorModel) cm ); } else { ret = new
* BufferedImage( src.getWidth(), src.getHeight(), src.getType() ); }
* Graphics2D g = ret.createGraphics(); //clear alpha channel Composite
* comp = g.getComposite();
* g.setComposite(AlphaComposite.getInstance(AlphaComposite.CLEAR,
* 0.0f)); Rectangle2D.Double d = new
* Rectangle2D.Double(0,0,ret.getWidth(),ret.getHeight()); g.fill(d);
* g.setComposite(comp);
*/
ret = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
Graphics2D g = ret.createGraphics();
// copy image
g.drawImage(scaled, 0, 0, null);
return ret;
}
}
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