Package org.pentaho.reporting.engine.classic.core.modules.output.pageable.graphics

Source Code of org.pentaho.reporting.engine.classic.core.modules.output.pageable.graphics.Graphics2DReportProcessTask$ImageGeneratorInterceptor

/*
* 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);
  }
}
TOP

Related Classes of org.pentaho.reporting.engine.classic.core.modules.output.pageable.graphics.Graphics2DReportProcessTask$ImageGeneratorInterceptor

TOP
Copyright © 2018 www.massapi.com. All rights reserved.
All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.