org.eclipse.osbp.xtext.reportdsl/src/org/eclipse/osbp/xtext/reportdsl/common/HTMLServerEmbeddedImageHandler.java

/**
 *                                                                            
 * Copyright (c) 2011, 2016 - Loetz GmbH&Co.KG (69115 Heidelberg, Germany)
 *                                                                            
 * All rights reserved. This program and the accompanying materials           
 * are made available under the terms of the Eclipse Public License 2.0        
 * which accompanies this distribution, and is available at                  
 * https://www.eclipse.org/legal/epl-2.0/                                 
 *                                 
 * SPDX-License-Identifier: EPL-2.0                                 
 *                                                                            
 * Contributors:   
 * Christophe Loetz (Loetz GmbH&Co.KG) - initial implementation 
 */
package org.eclipse.osbp.xtext.reportdsl.common;


import java.io.UnsupportedEncodingException;

import org.apache.commons.codec.binary.Base64;
import org.eclipse.birt.report.engine.api.HTMLServerImageHandler;
import org.eclipse.birt.report.engine.api.IImage;
import org.eclipse.birt.report.model.api.elements.DesignChoiceConstants;
import org.eclipse.birt.report.model.api.elements.structures.EmbeddedImage;

public class HTMLServerEmbeddedImageHandler extends HTMLServerImageHandler{
    protected String handleImage(IImage image, Object context,
            String prefix, boolean needMap) {
    	String[] splittedID = image.getID().split("\\.");
    	String imageId = splittedID.length > 0 ? splittedID[0] : "";
    	if (imageId.equals(DesignChoiceConstants.IMAGE_REF_TYPE_EMBED)){
    		byte[] data = Base64.encodeBase64(image.getImageData());
    		String value = "";
			if ( data != null )
				try {
					value  = new String( data, EmbeddedImage.CHARSET );
				} catch (UnsupportedEncodingException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
             return "data:" + image.getMimeType() + ";base64," + value;
    	}
    	return super.handleImage(image, context, prefix, needMap);
    }
}