/**
* Squidy Interaction Library is free software: you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation, either version 3 of the License,
* or (at your option) any later version.
*
* Squidy Interaction Library is distributed in the hope that it will be
* useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with Squidy Interaction Library. If not, see
* <http://www.gnu.org/licenses/>.
*
* 2009 Human-Computer Interaction Group, University of Konstanz.
* <http://hci.uni-konstanz.de>
*
* Please contact info@squidy-lib.de or visit our website
* <http://www.squidy-lib.de> for further information.
*/
package org.squidy.util;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.RenderingHints;
import java.awt.geom.AffineTransform;
import java.awt.image.BufferedImage;
/**
* <code>ImageUtilities</code>.
*
* <pre>
* Date: Nov 19, 2008
* Time: 7:40:21 PM
* </pre>
*
* @author Roman Rädle, <a
* href="mailto:Roman.Raedle@uni-konstanz.de">Roman.Raedle@uni-konstanz.de</a>,
* University of Konstanz
* @version $Id: ImageUtilities.java 772 2011-09-16 15:39:44Z raedle $
* @since 1.1.0
*/
public class ImageUtilities {
/**
* Scales an image with pixel ratio awareness.
*
* @param image
* The source image that will be used to scale the image.
* @param width
* The maximum width of the scaled image.
* @param height
* The maximum height of the scaled image.
* @return Either the scaled image if its bigger than the source's width AND height or the
* source image.
*/
public static BufferedImage scaleImageTo(Image image, int width, int height) {
int imageWidth = image.getWidth(null);
int imageHeight = image.getHeight(null);
double scaleX = (double) width / imageWidth;
double scaleY = (double) height / imageHeight;
AffineTransform at = AffineTransform.getScaleInstance(scaleX, scaleY);
BufferedImage scaledImage = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
Graphics2D g2d = scaledImage.createGraphics();
g2d.setRenderingHint(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
g2d.setRenderingHint(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
g2d.drawImage(image, at, null);
g2d.dispose();
return scaledImage;
}
}