/*
* 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) 2001 - 2009 Object Refinery Ltd, Pentaho Corporation and Contributors.. All rights reserved.
*/
package org.pentaho.reporting.engine.classic.core.modules.output.pageable.pdf;
import java.io.OutputStream;
import org.pentaho.reporting.engine.classic.core.layout.model.LogicalPageBox;
import org.pentaho.reporting.engine.classic.core.layout.model.PageGrid;
import org.pentaho.reporting.engine.classic.core.layout.output.ContentProcessingException;
import org.pentaho.reporting.engine.classic.core.layout.output.LogicalPageKey;
import org.pentaho.reporting.engine.classic.core.layout.output.OutputProcessorMetaData;
import org.pentaho.reporting.engine.classic.core.layout.output.PhysicalPageKey;
import org.pentaho.reporting.engine.classic.core.modules.output.pageable.base.AbstractPageableOutputProcessor;
import org.pentaho.reporting.engine.classic.core.modules.output.pageable.base.AllPageFlowSelector;
import org.pentaho.reporting.engine.classic.core.modules.output.pageable.base.PageFlowSelector;
import org.pentaho.reporting.engine.classic.core.modules.output.pageable.pdf.internal.PdfDocumentWriter;
import org.pentaho.reporting.engine.classic.core.modules.output.pageable.pdf.internal.PdfOutputProcessorMetaData;
import org.pentaho.reporting.engine.classic.core.modules.output.support.itext.BaseFontModule;
import org.pentaho.reporting.libraries.base.config.Configuration;
import org.pentaho.reporting.libraries.fonts.encoding.EncodingRegistry;
import org.pentaho.reporting.libraries.fonts.itext.ITextFontStorage;
import org.pentaho.reporting.libraries.resourceloader.ResourceManager;
/**
* A streaming target, which produces a PDF document.
*
* @author Thomas Morgner
*/
public class PdfOutputProcessor extends AbstractPageableOutputProcessor
{
private PdfOutputProcessorMetaData metaData;
private PageFlowSelector flowSelector;
private OutputStream outputStream;
private PdfDocumentWriter writer;
private ResourceManager resourceManager;
public PdfOutputProcessor(final Configuration configuration,
final OutputStream outputStream)
{
this(configuration, outputStream, PdfOutputProcessor.createResourceManager());
}
private static ResourceManager createResourceManager()
{
final ResourceManager resourceManager = new ResourceManager();
resourceManager.registerDefaults();
return resourceManager;
}
public PdfOutputProcessor(final Configuration configuration,
final OutputStream outputStream,
final ResourceManager resourceManager)
{
if (configuration == null)
{
throw new NullPointerException("Configuration must not be null");
}
if (outputStream == null)
{
throw new NullPointerException("OutputStream must not be null");
}
if (resourceManager == null)
{
throw new NullPointerException();
}
this.resourceManager = resourceManager;
this.outputStream = outputStream;
this.flowSelector = new AllPageFlowSelector();
// for the sake of simplicity, we use the AWT font registry for now.
// This is less accurate than using the iText fonts, but completing
// the TrueType registry or implementing an iText registry is too expensive
// for now.
final String encoding = configuration.getConfigProperty
("org.pentaho.reporting.engine.classic.core.modules.output.pageable.pdf.Encoding",
EncodingRegistry.getPlatformDefaultEncoding());
final ITextFontStorage fontStorage = new ITextFontStorage(BaseFontModule.getFontRegistry(), encoding);
metaData = new PdfOutputProcessorMetaData(configuration, fontStorage);
}
public OutputProcessorMetaData getMetaData()
{
return metaData;
}
public PageFlowSelector getFlowSelector()
{
return flowSelector;
}
public void setFlowSelector(final PageFlowSelector flowSelector)
{
if (flowSelector == null)
{
throw new NullPointerException();
}
this.flowSelector = flowSelector;
}
protected void processingContentFinished()
{
if (isContentGeneratable() == false)
{
return;
}
if (writer != null)
{
this.writer.close();
this.metaData.commit();
}
}
protected void processPhysicalPage(final PageGrid pageGrid,
final LogicalPageBox logicalPage,
final int row,
final int col,
final PhysicalPageKey pageKey)
throws ContentProcessingException
{
try
{
if (writer == null)
{
writer = new PdfDocumentWriter(metaData, outputStream, resourceManager);
writer.open();
}
writer.processPhysicalPage(pageGrid, logicalPage, row, col, pageKey);
}
catch (Exception e)
{
throw new ContentProcessingException("Failed to generate PDF document", e);
}
}
protected void processLogicalPage(final LogicalPageKey key,
final LogicalPageBox logicalPage)
throws ContentProcessingException
{
try
{
if (writer == null)
{
writer = new PdfDocumentWriter(metaData, outputStream, resourceManager);
writer.open();
}
writer.processLogicalPage(key, logicalPage);
}
catch (Exception e)
{
throw new ContentProcessingException("Failed to generate PDF document", e);
}
}
}