/*
* Beryl - A web platform based on XML, XSLT and Java
* This file is part of the Beryl XML GUI
*
* Copyright (C) 2004 Wenzel Jakob <wazlaf@tigris.org>
*
* This program 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 2.1 of the License, or (at your option) any later version.
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-3107 USA
*/
package org.beryl.gui.table;
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.geom.AffineTransform;
import java.awt.image.BufferedImage;
import javax.swing.ImageIcon;
import javax.swing.JLabel;
import org.beryl.gui.GUIException;
import org.beryl.gui.Widget;
import org.beryl.gui.model.TableRow;
import org.beryl.gui.widgets.Label;
import org.beryl.gui.widgets.Table;
public class ImageRenderer implements TableRenderer {
private int maxImageSize;
public ImageRenderer() {
this(10);
}
public ImageRenderer(int maxImageSize) {
this.maxImageSize = maxImageSize;
}
public Widget getRenderer(
Table table,
Object value,
boolean isSelected,
boolean hasFocus,
TableRow row,
String key)
throws GUIException {
Label label = new Label(null, null);
ImageIcon icon = (ImageIcon) value;
Image inImage = icon.getImage();
/* Resize the image */
double scale = (double) maxImageSize / (double) inImage.getHeight(null);
if (inImage.getWidth(null) > inImage.getHeight(null)) {
scale = (double) maxImageSize / (double) inImage.getWidth(null);
}
int scaledW = (int) (scale * inImage.getWidth(null));
int scaledH = (int) (scale * inImage.getHeight(null));
BufferedImage outImage = new BufferedImage(scaledW, scaledH, BufferedImage.TYPE_INT_RGB);
AffineTransform tx = new AffineTransform();
if (scale < 1.0d) {
tx.scale(scale, scale);
}
Color bgColor = null;
Graphics2D g2d = outImage.createGraphics();
g2d.setColor(bgColor);
g2d.fillRect(0, 0, scaledW, scaledH);
g2d.drawImage(inImage, tx, null);
g2d.dispose();
label.setIcon(new ImageIcon(outImage));
label.setProperty("horizontalAlignment", new Integer(JLabel.CENTER));
label.setProperty("opaque", Boolean.TRUE);
return label;
}
}