GraphicSymbol.java

/*----------------    FILE HEADER  ------------------------------------------
 This file is part of deegree.
 Copyright (C) 2001-2012 by:
 Department of Geography, University of Bonn
 http://www.giub.uni-bonn.de/deegree/
 lat/lon GmbH
 http://www.lat-lon.de

 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
 Contact:

 lat/lon GmbH
 Aennchenstr. 19
 53177 Bonn
 Germany
 http://www.lat-lon.de/

 Prof. Dr. Klaus Greve
 Department of Geography
 University of Bonn
 Meckenheimer Allee 166
 53115 Bonn
 Germany
 E-Mail: greve@giub.uni-bonn.de
 ---------------------------------------------------------------------------*/

package org.deegree.igeo.style.model;

import static org.apache.batik.transcoder.SVGAbstractTranscoder.KEY_HEIGHT;
import static org.apache.batik.transcoder.SVGAbstractTranscoder.KEY_WIDTH;

import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.net.URL;

import javax.imageio.ImageIO;
import javax.media.jai.JAI;
import javax.media.jai.RenderedOp;

import org.apache.batik.transcoder.TranscoderInput;
import org.apache.batik.transcoder.TranscoderOutput;
import org.apache.batik.transcoder.image.PNGTranscoder;
import org.deegree.framework.log.ILogger;
import org.deegree.framework.log.LoggerFactory;

import com.sun.media.jai.codec.MemoryCacheSeekableStream;

/**
 * <code>GraphicSymbol</code> TODO add class documentation
 * 
 * @author <a href="mailto:wanhoff@lat-lon.de">Jeronimo Wanhoff</a>
 * @author <a href="mailto:buesching@lat-lon.de">Lyn Buesching</a>
 * @author last edited by: $Author$
 * 
 * @version $Revision$, $Date$
 * 
 */
public class GraphicSymbol extends Symbol implements Comparable<GraphicSymbol> {

    private static final ILogger LOG = LoggerFactory.getLogger( GraphicSymbol.class );

    private URL url;

    private double size;

    /**
     * @param name
     * @param url
     */
    public GraphicSymbol( String name, URL url ) {
        super( name );
        this.url = url;
    }

    /**
     * @param name
     * @param url
     * @param size
     */
    public GraphicSymbol( String name, URL url, double size ) {
        super( name );
        this.url = url;
        this.size = size;
    }

    /**
     * @return the url
     */
    public URL getUrl() {
        return url;
    }

    /**
     * @param url
     *            the url to set
     */
    public void setUrl( URL url ) {
        this.url = url;
    }

    /**
     * @return the size
     */
    public double getSize() {
        return size;
    }

    /**
     * @param size
     *            the size to set
     */
    public void setSize( double size ) {
        this.size = size;
    }

    /*
     * (non-Javadoc)
     * 
     * @see org.deegree.igeo.views.swing.style.model.Symbol#getIcon(int, int)
     */
    public BufferedImage getAsImage() {
        try {
            if ( url != null && url.getFile().endsWith( "svg" ) ) {
                int size = 10;
                ByteArrayOutputStream bos = new ByteArrayOutputStream( size * size * 4 );
                TranscoderOutput output = new TranscoderOutput( bos );
                PNGTranscoder trc = new PNGTranscoder();
                InputStream in = url.openStream();// new FileInputStream( new File( url.toString() ) );
                TranscoderInput input = new TranscoderInput( in );

                if ( size > 0 ) {
                    trc.addTranscodingHint( KEY_HEIGHT, Float.valueOf( size ) );
                    trc.addTranscodingHint( KEY_WIDTH, Float.valueOf( size ) );
                }
                trc.transcode( input, output );
                bos.close();
                ByteArrayInputStream is = new ByteArrayInputStream( bos.toByteArray() );
                MemoryCacheSeekableStream mcss = new MemoryCacheSeekableStream( is );
                RenderedOp rop = JAI.create( "stream", mcss );
                return rop.getAsBufferedImage();
            }
            return ImageIO.read( this.url );
        } catch ( Exception e ) {
            LOG.logInfo( "Could not create icon for URL " + url + "! Exception: " + e.getMessage() );
        }
        return null;
    }

    /**
     * @return the mime type of the icon; null, if the format is unknown
     */
    public String getFormat() {
        String contentType = url.getFile();
        contentType = contentType.substring( contentType.lastIndexOf( '.' ) + 1, contentType.length() );
        String mimetype = null;
        if ( contentType.equalsIgnoreCase( "jpeg" ) ) {
            mimetype = "image/jpeg";
        } else if ( contentType.equalsIgnoreCase( "jpg" ) ) {
            mimetype = "image/jpeg";
        } else if ( contentType.equalsIgnoreCase( "gif" ) ) {
            mimetype = "image/gif";
        } else if ( contentType.equalsIgnoreCase( "png" ) ) {
            mimetype = "image/png";
        } else if ( contentType.equalsIgnoreCase( "bmp" ) ) {
            mimetype = "image/bmp";
        } else if ( contentType.equalsIgnoreCase( "tif" ) ) {
            mimetype = "image/tiff";
        } else if ( contentType.equalsIgnoreCase( "tiff" ) ) {
            mimetype = "image/tiff";
        } else if ( contentType.equalsIgnoreCase( "svg" ) ) {
            mimetype = "image/svg+xml";
        }
        return mimetype;
    }

    public int compareTo( GraphicSymbol o ) {
        String ownName = this.getName();
        String otherName = o.getName();
        Boolean ownNameIsNull = Boolean.valueOf( ownName == null );
        Boolean otherNameIsNull = Boolean.valueOf( otherName == null );
        if ( otherNameIsNull && ownNameIsNull ) {
            return 0;
        } else if ( otherNameIsNull && !ownNameIsNull ) {
            return 1;
        } else if ( !otherNameIsNull && ownNameIsNull ) {
            return -1;
        } else
            return ownName.compareTo( otherName );
    }
}