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/*
* SIP Communicator, the OpenSource Java VoIP and Instant Messaging client.
*
* Distributable under LGPL license.
* See terms of license at gnu.org.
*/
package net.java.sip.communicator.util;
import java.awt.*;
import java.awt.image.*;
import java.io.*;
import javax.imageio.*;
import javax.swing.*;
/**
* Utility methods for image manipulation.
*
* @author Sebastien Mazy
* @author Yana Stamcheva
*/
public class ImageUtils
{
private static final Logger logger = Logger.getLogger(ImageUtils.class);
/**
* Returns a scaled image fitting within the given bounds
* while keeping the aspect ratio.
*
* @param image the image to scale
* @param width maximum width of the scaled image
* @param height maximum height of the scaled image
* @return the scaled image
*/
public static ImageIcon
scaleIconWithinBounds(Image image, int width, int height)
{
ImageIcon scaledImage;
int scaleHint = Image.SCALE_SMOOTH;
double originalRatio =
(double) image.getWidth(null) / image.getHeight(null);
double areaRatio = (double) width / height;
if(originalRatio > areaRatio)
{
scaledImage = new ImageIcon(image.
getScaledInstance(width, -1,scaleHint));
}
else
{
scaledImage = new ImageIcon(image.
getScaledInstance(-1, height, scaleHint));
}
return scaledImage;
}
/**
* Creates a rounded avatar image.
*
* @param avatarBytes The bytes of the initial avatar image.
*
* @return The rounded corner image.
*/
public static ImageIcon getScaledRoundedImage( Image image,
int width,
int height)
{
BufferedImage destImage = null;
ImageIcon scaledImage = ImageUtils.scaleIconWithinBounds( image,
width,
height);
destImage
= new BufferedImage(scaledImage.getIconWidth(),
scaledImage.getIconHeight(),
BufferedImage.TYPE_INT_ARGB);
Graphics2D g = destImage.createGraphics();
g.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
g.setColor(Color.WHITE);
g.fillRoundRect(0, 0,
scaledImage.getIconWidth(),
scaledImage.getIconHeight(),
10, 10);
g.setComposite(AlphaComposite.SrcIn);
g.drawImage(scaledImage.getImage(), 0, 0, null);
return new ImageIcon(destImage);
}
/**
* Creates a rounded corner scaled image.
*
* @param imageBytes The bytes of the image to be scaled.
* @param width The maximum width of the scaled image.
* @param height The maximum height of the scaled image.
*
* @return The rounded corner scaled image.
*/
public static ImageIcon getScaledRoundedImage( byte[] imageBytes,
int width,
int height)
{
if (imageBytes == null || imageBytes.length < 1)
return null;
ImageIcon imageIcon = null;
try
{
InputStream in = new ByteArrayInputStream(imageBytes);
BufferedImage image = ImageIO.read(in);
imageIcon = getScaledRoundedImage(image, width, height);
}
catch (Exception e)
{
logger.error("Could not create image.", e);
}
return imageIcon;
}
}
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