/*
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* This program 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.
*
* Copyright (c) 2009 Pentaho Corporation.. All rights reserved.
*/
package org.pentaho.reporting.engine.classic.core.modules.output.pageable.graphics;
import java.awt.Dimension;
import java.awt.Graphics2D;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import java.io.OutputStream;
import org.pentaho.reporting.engine.classic.core.AbstractReportProcessTask;
import org.pentaho.reporting.engine.classic.core.MasterReport;
import org.pentaho.reporting.engine.classic.core.ReportProcessingException;
import org.pentaho.reporting.engine.classic.core.event.ReportProgressListener;
import org.pentaho.reporting.engine.classic.core.layout.output.LogicalPageKey;
import org.pentaho.reporting.engine.classic.core.layout.output.PhysicalPageKey;
import org.pentaho.reporting.engine.classic.core.modules.output.pageable.graphics.internal.GraphicsContentInterceptor;
import org.pentaho.reporting.engine.classic.core.modules.output.pageable.graphics.internal.GraphicsOutputProcessor;
import org.pentaho.reporting.engine.classic.core.modules.output.pageable.graphics.internal.StreamGraphicsOutputProcessorMetaData;
import org.pentaho.reporting.engine.classic.core.modules.output.table.base.StreamReportProcessor;
import org.pentaho.reporting.libraries.base.config.Configuration;
import org.pentaho.reporting.libraries.base.encoder.ImageEncoder;
import org.pentaho.reporting.libraries.base.encoder.ImageEncoderRegistry;
import org.pentaho.reporting.libraries.repository.ContentItem;
import org.pentaho.reporting.libraries.repository.ContentLocation;
import org.pentaho.reporting.libraries.repository.NameGenerator;
import org.pentaho.reporting.libraries.xmlns.common.ParserUtil;
/**
* Todo: Document Me
*
* @author Thomas Morgner
*/
public class Graphics2DReportProcessTask extends AbstractReportProcessTask
{
private static class ImageGeneratorInterceptor implements GraphicsContentInterceptor
{
private BufferedImage image;
private ImageGeneratorInterceptor()
{
}
public void processLogicalPage(final LogicalPageKey key, final PageDrawable page)
{
final Dimension preferredSize = page.getPreferredSize();
image = new BufferedImage(preferredSize.width, preferredSize.height, BufferedImage.TYPE_INT_ARGB);
final Graphics2D g2 = image.createGraphics();
page.draw(g2, new Rectangle2D.Double(0, 0, preferredSize.width, preferredSize.height));
g2.dispose();
}
public void processPhysicalPage(final PhysicalPageKey key, final PageDrawable page)
{
// intentionally empty
}
public boolean isPhysicalPageAccepted(final PhysicalPageKey key)
{
return false;
}
public boolean isLogicalPageAccepted(final LogicalPageKey key)
{
return true;
}
public BufferedImage getImage()
{
return image;
}
}
public Graphics2DReportProcessTask()
{
}
/**
* @noinspection ThrowableInstanceNeverThrown
*/
public void run()
{
if (isValid() == false)
{
setError(new ReportProcessingException("Error: The task is not configured properly."));
return;
}
setError(null);
try
{
final MasterReport masterReport = getReport();
final Configuration configuration = masterReport.getConfiguration();
final boolean alphaChannel = "true".equals(configuration.getConfigProperty
("org.pentaho.reporting.engine.classic.core.modules.output.pageable.graphics.AlphaChannel"));
final String mimeType = computeMimeType(configuration);
final float quality = ParserUtil.parseFloat(configuration.getConfigProperty
("org.pentaho.reporting.engine.classic.core.modules.output.pageable.graphics.Quality"), 0.9f);
final GraphicsOutputProcessor outputProcessor = new GraphicsOutputProcessor
(new StreamGraphicsOutputProcessorMetaData(configuration), masterReport.getResourceManager());
final StreamReportProcessor streamReportProcessor = new StreamReportProcessor(masterReport, outputProcessor);
final ReportProgressListener[] progressListeners = getReportProgressListeners();
for (int i = 0; i < progressListeners.length; i++)
{
final ReportProgressListener listener = progressListeners[i];
streamReportProcessor.addReportProgressListener(listener);
}
final ImageGeneratorInterceptor interceptor = new ImageGeneratorInterceptor();
outputProcessor.setInterceptor(interceptor);
streamReportProcessor.processReport();
streamReportProcessor.close();
final ContentLocation contentLocation = getBodyContentLocation();
final NameGenerator nameGenerator = getBodyNameGenerator();
final ContentItem contentItem =
contentLocation.createItem(nameGenerator.generateName(null, mimeType));
final BufferedImage image = interceptor.getImage();
final ImageEncoder imageEncoder = ImageEncoderRegistry.getInstance().createEncoder(mimeType);
final OutputStream outputStream = contentItem.getOutputStream();
imageEncoder.encodeImage(image, outputStream, quality, alphaChannel);
outputStream.close();
}
catch (Throwable e)
{
setError(e);
}
}
protected String computeMimeType(final Configuration configuration)
{
return configuration.getConfigProperty
("org.pentaho.reporting.engine.classic.core.modules.output.pageable.graphics.EncoderMime", "image/png");
}
public String getReportMimeType()
{
final MasterReport masterReport = getReport();
final Configuration configuration = masterReport.getConfiguration();
return computeMimeType(configuration);
}
}