BarbecueDesignConverter.java

/*
 * JasperReports - Free Java Reporting Library.
 * Copyright (C) 2001 - 2009 Jaspersoft Corporation. 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 <http://www.gnu.org/licenses/>.
 */
package net.sf.jasperreports.components.barbecue;

import net.sf.jasperreports.engine.JRComponentElement;
import net.sf.jasperreports.engine.JRPrintElement;
import net.sf.jasperreports.engine.base.JRBasePrintImage;
import net.sf.jasperreports.engine.component.ComponentDesignConverter;
import net.sf.jasperreports.engine.convert.ReportConverter;
import net.sf.jasperreports.engine.type.ScaleImageEnum;
import net.sf.jasperreports.engine.util.JRExpressionUtil;
import net.sourceforge.barbecue.Barcode;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
 * 
 * @author Lucian Chirita (lucianc@users.sourceforge.net)
 * @version $Id: BarbecueDesignConverter.java 3491 2010-03-01 15:52:55Z shertage $
 */
public class BarbecueDesignConverter implements ComponentDesignConverter
{
	
	private static final Log log = LogFactory.getLog(BarbecueDesignConverter.class);
	
	private static final String DEFAULT_PREVIEW_CODE = "01234567890";

	public JRPrintElement convert(ReportConverter reportConverter,
			JRComponentElement element)
	{
		BarbecueComponent component = (BarbecueComponent) element.getComponent();
		if (component == null || component.getType() == null)
		{
			return null;
		}
		
		try
		{
			JRBasePrintImage image = new JRBasePrintImage(
					reportConverter.getDefaultStyleProvider());
			reportConverter.copyBaseAttributes(element, image);
			image.setScaleImage(ScaleImageEnum.RETAIN_SHAPE);
			
			String code = null;
			if (component.getCodeExpression() != null)
			{
				code = JRExpressionUtil.getSimpleExpressionText(
						component.getCodeExpression());
			}
			if (code == null)
			{
				//TODO custom default code
				code = DEFAULT_PREVIEW_CODE;
			}
			
			String applicationIdentifier = null;
			if (component.getApplicationIdentifierExpression() != null)
			{
				applicationIdentifier = JRExpressionUtil.getSimpleExpressionText(
						component.getApplicationIdentifierExpression());
			}
			//TODO custom default app id
			
			BarcodeInfo barcodeInfo = new BarcodeInfo();
			barcodeInfo.setType(component.getType());
			barcodeInfo.setCode(code);
			barcodeInfo.setApplicationIdentifier(applicationIdentifier);
			barcodeInfo.setDrawText(component.isDrawText());
			barcodeInfo.setRequiresChecksum(component.isChecksumRequired());
			barcodeInfo.setBarWidth(component.getBarWidth());
			barcodeInfo.setBarHeight(component.getBarHeight());
			
			Barcode barcode = BarcodeProviders.createBarcode(barcodeInfo);
			image.setRenderer(new BarbecueRenderer(barcode));
			return image;
		}
		catch (Exception e)
		{
			if (log.isDebugEnabled())
			{
				log.debug("Error while previewing barcode", e);
			}
			
			return null;
		}
		
	}

}