net.sf.jasperreports.engine.util.JRJdk13ImageReader Maven / Gradle / Ivy

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Free Java Reporting Library

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/*
 * JasperReports - Free Java Reporting Library.
 * Copyright (C) 2001 - 2019 TIBCO Software Inc. All rights reserved.
 * http://www.jaspersoft.com
 *
 * Unless you have purchased a commercial license agreement from Jaspersoft,
 * the following license terms apply:
 *
 * This program is part of JasperReports.
 *
 * JasperReports 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.
 *
 * JasperReports 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 JasperReports. If not, see .
 */
package net.sf.jasperreports.engine.util;

import java.awt.Image;
import java.awt.MediaTracker;
import java.awt.Panel;
import java.awt.Toolkit;

import net.sf.jasperreports.engine.JRException;


/**
 * @author Teodor Danciu ([email protected])
 */
public class JRJdk13ImageReader implements JRImageReader
{
	public static final String EXCEPTION_MESSAGE_KEY_IMAGE_READ_FAILED = "util.jdk13.image.read.failed";

	@Override
	public Image readImage(byte[] bytes) throws JRException
	{
		Image image = Toolkit.getDefaultToolkit().createImage(bytes);

		MediaTracker tracker = new MediaTracker(new Panel());
		tracker.addImage(image, 0);
		try
		{
			tracker.waitForID(0);
		}
		catch (Exception e)
		{
			//image = null;
			throw new JRException(e);
		}

		if(tracker.isErrorID(0)) 
		{
			throw 
			new JRException(
				EXCEPTION_MESSAGE_KEY_IMAGE_READ_FAILED,
				(Object[])null);
		}

		return image;
	}


}