/*
* 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.libraries.serializer.methods;
import java.awt.print.PageFormat;
import java.awt.print.Paper;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import org.pentaho.reporting.libraries.serializer.SerializeMethod;
/**
* A SerializeMethod implementation that handles PageFormat objects.
*
* @author Thomas Morgner
* @see java.awt.print.PageFormat
*/
public class PageFormatSerializer implements SerializeMethod
{
/**
* Default Constructor.
*/
public PageFormatSerializer ()
{
}
/**
* Writes a serializable object description to the given object output stream.
*
* @param o the to be serialized object.
* @param out the outputstream that should receive the object.
* @throws IOException if an I/O error occured.
*/
public void writeObject (final Object o, final ObjectOutputStream out)
throws IOException
{
final PageFormat pf = (PageFormat) o;
out.writeObject(resolvePageFormat(pf));
}
/**
* Reads the object from the object input stream.
*
* @param in the object input stream from where to read the serialized data.
* @return the generated object.
*
* @throws IOException if reading the stream failed.
* @throws ClassNotFoundException if serialized object class cannot be found.
*/
public Object readObject (final ObjectInputStream in)
throws IOException, ClassNotFoundException
{
final Object[] pageFormatResolve = (Object[]) in.readObject();
return createPageFormat(pageFormatResolve);
}
/**
* Returns the class of the object, which this object can serialize.
*
* @return the class of java.awt.print.PageFormat.
*/
public Class getObjectClass ()
{
return PageFormat.class;
}
/**
* Resolves a page format, so that the result can be serialized.
*
* @param format the page format that should be prepared for serialisation.
* @return the prepared page format data.
*/
private Object[] resolvePageFormat (final PageFormat format)
{
final Integer orientation = new Integer(format.getOrientation());
final Paper p = format.getPaper();
final float[] fdim = new float[]{(float) p.getWidth(), (float) p.getHeight()};
final float[] rect = new float[]{(float) p.getImageableX(),
(float) p.getImageableY(),
(float) p.getImageableWidth(),
(float) p.getImageableHeight()};
return new Object[]{orientation, fdim, rect};
}
/**
* Restores a page format after it has been serialized.
*
* @param data the serialized page format data.
* @return the restored page format.
*/
private PageFormat createPageFormat (final Object[] data)
{
final Integer orientation = (Integer) data[0];
final float[] dim = (float[]) data[1];
final float[] rect = (float[]) data[2];
final Paper p = new Paper();
p.setSize(dim[0], dim[1]);
p.setImageableArea(rect[0], rect[1], rect[2], rect[3]);
final PageFormat format = new PageFormat();
format.setPaper(p);
format.setOrientation(orientation.intValue());
return format;
}
}