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Free Java Reporting Library
/*
* 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.renderers;
import java.awt.Dimension;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.geom.Dimension2D;
import java.awt.geom.Rectangle2D;
import java.lang.ref.SoftReference;
import net.sf.jasperreports.engine.JRConstants;
import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JasperReportsContext;
import net.sf.jasperreports.engine.util.JRImageLoader;
/**
* @author Teodor Danciu ([email protected])
*/
public class WrappingImageDataToGraphics2DRenderer extends AbstractRenderer implements DataRenderable, Graphics2DRenderable, DimensionRenderable
{
/**
*
*/
private static final long serialVersionUID = JRConstants.SERIAL_VERSION_UID;
/**
*
*/
private final DataRenderable dataRenderer;
/**
*
*/
private transient SoftReference awtImageRef;
/**
*
*/
public WrappingImageDataToGraphics2DRenderer(DataRenderable dataRenderer) throws JRException
{
this.dataRenderer = dataRenderer;
}
/**
*
*/
protected Image getImage(JasperReportsContext jasperReportsContext) throws JRException
{
if (awtImageRef == null || awtImageRef.get() == null)
{
Image awtImage = JRImageLoader.getInstance(jasperReportsContext).loadAwtImageFromBytes(getData(jasperReportsContext));
awtImageRef = new SoftReference(awtImage);
}
return awtImageRef.get();
}
@Override
public Dimension2D getDimension(JasperReportsContext jasperReportsContext) throws JRException
{
Image img = getImage(jasperReportsContext);
return new Dimension(img.getWidth(null), img.getHeight(null));
}
@Override
public byte[] getData(JasperReportsContext jasperReportsContext)
throws JRException
{
return dataRenderer.getData(jasperReportsContext);
}
@Override
public void render(JasperReportsContext jasperReportsContext, Graphics2D grx, Rectangle2D rectangle) throws JRException
{
Image img = getImage(jasperReportsContext);
grx.drawImage(
img,
(int)rectangle.getX(),
(int)rectangle.getY(),
(int)rectangle.getWidth(),
(int)rectangle.getHeight(),
null
);
}
}