Java tutorial
/* Copyright (C) 2006 Christian Schneider * * This file is part of Nomad. * * Nomad is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * Nomad 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 General Public License for more details. * * You should have received a copy of the GNU General Public License * along with Nomad; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ package net.sf.nmedit.jtheme.image; import java.awt.Image; import java.awt.image.BufferedImage; import java.io.IOException; import java.io.Serializable; import java.net.URL; import javax.imageio.ImageIO; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; public class ToolkitImageResource extends AbstractImageResource implements Serializable { /** * serial version */ private static final long serialVersionUID = 5082872382975908730L; private transient BufferedImage image; private transient boolean imageInitialized = false; public ToolkitImageResource(String srcURI, ClassLoader customClassLoader) { super(srcURI, customClassLoader); } public ToolkitImageResource(URL imageURL) { super(imageURL); } @Override public Image getImage(int width, int height) { if (!(imageInitialized)) { imageInitialized = true; try { image = ImageIO.read(getEnsureResolvedURL()); } catch (IOException e) { Log log = LogFactory.getLog(getClass()); if (log.isErrorEnabled()) log.error("getImage() failed", e); } } return image; } @Override public int getType() { return RASTER_IMAGE; } public void flush() { super.flush(); image = null; this.imageInitialized = false; } protected void initState() { super.initState(); this.imageInitialized = false; } private void writeObject(java.io.ObjectOutputStream out) throws IOException { out.defaultWriteObject(); } private void readObject(java.io.ObjectInputStream in) throws IOException, ClassNotFoundException { in.defaultReadObject(); } }