All Downloads are FREE. Search and download functionalities are using the official Maven repository.

org.jpedal.io.PathSerializer Maven / Gradle / Ivy

Go to download

JPedal fork

The newest version!
/*
 * ===========================================
 * Java Pdf Extraction Decoding Access Library
 * ===========================================
 *
 * Project Info:  http://www.idrsolutions.com
 * Help section for developers at http://www.idrsolutions.com/java-pdf-library-support/
 *
 * (C) Copyright 1997-2013, IDRsolutions and Contributors.
 *
 * 	This file is part of JPedal
 *
     This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2.1 of the License, or (at your option) any later version.

    This library 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.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA


 *
 * ---------------
 * PathSerializer.java
 * ---------------
 */
package org.jpedal.io;

import java.awt.geom.GeneralPath;
import java.awt.geom.PathIterator;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

/**
 * This class will serialize and deserialize GeneralPath objects
 * 
 */
public class PathSerializer {

	/**
	 * method to serialize a path. This method will iterate through the iterator passed in, and write out the base components of the path to the
	 * ObjectOutput
	 * 
	 * @param os
	 *            - ObjectOutput to write to
	 * @param pi
	 *            - PathIterator path components to iterate over
	 * @throws IOException
	 */
	public static void serializePath(ObjectOutput os, PathIterator pi) throws IOException {

		os.writeObject(pi.getWindingRule());

		List list = new ArrayList();

		while (!pi.isDone()) {
			float[] array = new float[6];
			int type = pi.currentSegment(array);

			/** add details of each segment to the list */
			list.add(type);
			list.add(array);

			pi.next();
		}

		/** writes out the list which contains all the components of the path */
		os.writeObject(list);
	}

	/**
	 * method to deserialize a path from an ObjectInput.
	 * 
	 * @param os
	 *            - ObjectInput that contains the serilized path
	 * @return - the deserialize GeneralPath
	 * @throws ClassNotFoundException
	 * @throws IOException
	 */
	public static GeneralPath deserializePath(ObjectInput os) throws ClassNotFoundException, IOException {

		/** deserialize the windingRule for the path */
		Integer windingRule = (Integer) os.readObject();
		if (windingRule == null) return null;

		/** deserialize the list which contains all the raw path data */
		List list = (List) os.readObject();

		GeneralPath path = new GeneralPath();
		path.setWindingRule(windingRule);

		/**
		 * iterate over the list, and rebuild the path from the individual movements stored inside the list
		 */
		for (Iterator iter = list.iterator(); iter.hasNext();) {
			int pathType = (Integer) iter.next();
			float[] array = (float[]) iter.next();

			switch (pathType) {
				case PathIterator.SEG_LINETO:
					path.lineTo(array[0], array[1]);
					break;
				case PathIterator.SEG_MOVETO:
					path.moveTo(array[0], array[1]);
					break;
				case PathIterator.SEG_QUADTO:
					path.quadTo(array[0], array[1], array[2], array[3]);
					break;
				case PathIterator.SEG_CUBICTO:
					path.curveTo(array[0], array[1], array[2], array[3], array[4], array[5]);
					break;
				case PathIterator.SEG_CLOSE:
					path.closePath();
					break;
				default:
					System.out.println("unrecognized general path type");

					break;
			}
		}

		/** return the rebuilt path */
		return path;
	}
}
 















© 2015 - 2024 Weber Informatics LLC | Privacy Policy