/*
* 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 - 2013 Object Refinery Ltd, Pentaho Corporation and Contributors.. All rights reserved.
*/
package org.pentaho.reporting.engine.classic.demo.ancient.demo.nogui;
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.Rectangle;
import java.awt.Toolkit;
import java.awt.image.BufferedImage;
import java.awt.print.PageFormat;
import java.io.BufferedOutputStream;
import java.io.FileOutputStream;
import java.net.URL;
import java.text.MessageFormat;
import javax.swing.table.TableModel;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.pentaho.reporting.engine.classic.core.ClassicEngineBoot;
import org.pentaho.reporting.engine.classic.core.MasterReport;
import org.pentaho.reporting.engine.classic.core.PageDefinition;
import org.pentaho.reporting.engine.classic.core.TableDataFactory;
import org.pentaho.reporting.engine.classic.core.modules.output.pageable.graphics.PageDrawable;
import org.pentaho.reporting.engine.classic.core.modules.output.pageable.graphics.PrintReportProcessor;
import org.pentaho.reporting.engine.classic.demo.ancient.demo.opensource.OpenSourceProjects;
import org.pentaho.reporting.libraries.base.util.ObjectUtilities;
import org.pentaho.reporting.libraries.base.util.PngEncoder;
import org.pentaho.reporting.libraries.base.util.WaitingImageObserver;
import org.pentaho.reporting.libraries.resourceloader.Resource;
import org.pentaho.reporting.libraries.resourceloader.ResourceManager;
import org.pentaho.reporting.libraries.xmlns.parser.ParseException;
/**
* A demonstration that shows how to generate a report and save it to PDF without displaying the print preview or the
* PDF save-as dialog.
*
* @author David Gilbert
*/
public class StraightToPNG
{
private static final Log logger = LogFactory.getLog(StraightToPNG.class);
/**
* Creates a new demo application.
*
* @param filename the output filename.
* @throws ParseException if the report could not be parsed.
*/
public StraightToPNG(final String filename)
throws ParseException
{
final URL in = ObjectUtilities.getResource
("org/pentaho/reporting/engine/classic/demo/opensource/opensource.xml", StraightToPNG.class);
final MasterReport report = parseReport(in);
final TableModel data = new OpenSourceProjects();
report.setDataFactory(new TableDataFactory
("default", data));
final long startTime = System.currentTimeMillis();
savePNG(report, filename);
}
/**
* Reads the report from the specified template file.
*
* @param templateURL the template location.
* @return a report.
* @throws ParseException if the report could not be parsed.
*/
private MasterReport parseReport(final URL templateURL)
throws ParseException
{
try
{
final ResourceManager mgr = new ResourceManager();
final Resource resource = mgr.createDirectly(templateURL, MasterReport.class);
final MasterReport report = (MasterReport) resource.getResource();
// this demo adds the image at runtime just to show how this could be
// done. Usually such images get referenced from the XML itself without
// using manual coding.
final URL imageURL = ObjectUtilities.getResource
("org/pentaho/reporting/engine/classic/demo/opensource/gorilla.jpg", StraightToPNG.class);
final Image image = Toolkit.getDefaultToolkit().createImage(imageURL);
final WaitingImageObserver obs = new WaitingImageObserver(image);
obs.waitImageLoaded();
report.getParameterValues().put("logo", image);
return report;
}
catch (Exception e)
{
throw new ParseException("Failed to parse the report", e);
}
}
/**
* Saves a report to PDF format.
*
* @param report the report.
* @param fileName target file name.
* @return true or false.
*/
public boolean savePNG(final MasterReport report, final String fileName)
{
try
{
final PrintReportProcessor prc = new PrintReportProcessor(report);
final int numberOfPages = prc.getNumberOfPages();
for (int i = 0; i < numberOfPages; i++)
{
final String fileNameFormated =
MessageFormat.format(fileName, new Object[]{new Integer(i)});
final BufferedImage image = createImage(report.getPageDefinition());
final Rectangle rect = new Rectangle(0, 0, image.getWidth(), image.getHeight());
// prepare the image by filling it ...
final Graphics2D g2 = image.createGraphics();
g2.setPaint(Color.white);
g2.fill(rect);
final PageDrawable pageDrawable = prc.getPageDrawable(i);
pageDrawable.draw(g2, rect);
g2.dispose();
// convert to PNG ...
final PngEncoder encoder = new PngEncoder(image, true, 0, 9);
final byte[] data = encoder.pngEncode();
final BufferedOutputStream out = new BufferedOutputStream
(new FileOutputStream(fileNameFormated));
out.write(data);
out.close();
}
return true;
}
catch (Exception e)
{
System.err.println("Writing PDF failed.");
e.printStackTrace();
return false;
}
}
/**
* Create the empty image for the given page size.
*
* @param pd the page definition that defines the image bounds.
* @return the generated image.
*/
private BufferedImage createImage(final PageDefinition pd)
{
// in this simple case we know, that all pages have the same size..
final PageFormat pf = pd.getPageFormat(0);
final double width = pf.getWidth();
final double height = pf.getHeight();
//write the report to the temp file
return new BufferedImage
((int) width, (int) height, BufferedImage.TYPE_BYTE_INDEXED);
}
/**
* Demo starting point.
*
* @param args ignored.
*/
public static void main(final String[] args)
{
ClassicEngineBoot.getInstance().start();
try
{
//final StraightToPDF demo =
new StraightToPNG(System.getProperty("user.home") + "/OpenSource-Demo-{0}.png");
System.exit(0);
}
catch (Exception e)
{
logger.error("Failed to run demo", e);
System.exit(1);
}
}
}