| gvSIG desktop 1

/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana

 *

 * Copyright (C) 2005 IVER T.I. and Generalitat Valenciana.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 2

 * of the License, or (at your option) any later version.

 *

 * 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 General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.

 *

 * For more information, contact:

 *

 *  Generalitat Valenciana

 *   Conselleria d'Infraestructures i Transport

 *   Av. Blasco Ib??ez, 50

 *   46010 VALENCIA

 *   SPAIN

 *

 *      +34 963862235

 *   gvsig@gva.es

 *      www.gvsig.gva.es

 *

 *    or

 *

 *   IVER T.I. S.A

 *   Salamanca 50

 *   46005 Valencia

 *   Spain

 *

 *   +34 963163400

 *   dac@iver.es

 */

package org.gvsig.symbology.fmap.styles;

import java.awt.Graphics2D;

import java.awt.Rectangle;

import java.awt.RenderingHints;

import java.awt.geom.AffineTransform;

import java.awt.geom.Rectangle2D;

import java.io.File;

import java.io.IOException;

import java.net.URL;

import org.apache.batik.bridge.BridgeContext;

import org.apache.batik.bridge.DocumentLoader;

import org.apache.batik.bridge.GVTBuilder;

import org.apache.batik.bridge.UserAgentAdapter;

import org.apache.batik.bridge.ViewBox;

import org.apache.batik.dom.svg.SVGOMDocument;

import org.apache.batik.gvt.GraphicsNode;

import org.apache.batik.gvt.renderer.StaticRenderer;

import org.w3c.dom.Document;

import org.w3c.dom.Element;

import com.iver.cit.gvsig.fmap.core.SymbologyFactory;

import com.iver.cit.gvsig.fmap.core.symbols.ISymbol;

/**

 * Style for a SVG files.This is a XML specification and file format for

 * describing two-dimensional vector graphics, both static and animated.

 * SVG can be purely declarative or may include scripting. Images can contain

 * hyperlinks using outbound simple XLinks.It is an open standard created

 * by the World Wide Web Consortium..

 *

 * @author jaume dominguez faus - jaume.dominguez@iver.es

 *

 */

public class SVGStyle extends BackgroundFileStyle {

        private GVTBuilder gvtBuilder = new GVTBuilder();

    private UserAgentAdapter userAgent;

        private DocumentLoader loader;

        private StaticRenderer renderer = new StaticRenderer();

        private GraphicsNode gvtRoot;

        private BridgeContext ctx;

        private Element elt;

        protected static RenderingHints defaultRenderingHints;

    static {

        defaultRenderingHints = new RenderingHints(null);

        defaultRenderingHints.put(RenderingHints.KEY_ANTIALIASING,

                                  RenderingHints.VALUE_ANTIALIAS_ON);

        defaultRenderingHints.put(RenderingHints.KEY_INTERPOLATION,

                                  RenderingHints.VALUE_INTERPOLATION_BILINEAR);

    }

    /**

     * Constructor method

     *

     */

        public SVGStyle(){

                userAgent = new UserAgentAdapter();

                loader    = new DocumentLoader(userAgent);

                ctx       = new BridgeContext(userAgent, loader);

                renderer.setDoubleBuffered(true);

        }

        public void drawInsideRectangle(Graphics2D g, Rectangle rect, boolean keepAspectRatio) {

                if (keepAspectRatio) {

                        AffineTransform ataux = ViewBox.getViewTransform(null, elt,

                                        (float) rect.getWidth(), (float) rect.getHeight(), ctx);

                        RenderingHints renderingHints = new RenderingHints(null);

                        renderingHints.putAll(defaultRenderingHints);

                        g.setRenderingHints(renderingHints);

                        gvtRoot.setTransform(ataux);

                        gvtRoot.paint(g);

                } else {

                        Rectangle2D bounds = gvtRoot.getBounds();

                        AffineTransform ataux = AffineTransform.getTranslateInstance(

                                        rect.getX(),- rect.getY()-rect.getHeight());

                        ataux.concatenate(AffineTransform.getScaleInstance(

                                        rect.getWidth()/bounds.getWidth(),

                                        rect.getHeight()/bounds.getHeight()));

                        RenderingHints renderingHints = new RenderingHints(null);

                        renderingHints.putAll(defaultRenderingHints);

                        g.setRenderingHints(renderingHints);

                        gvtRoot.setTransform(ataux);

                        gvtRoot.paint(g);

                }

        }

        public boolean isSuitableFor(ISymbol symbol) {

                return true;

        }

        public String getClassName() {

                return getClass().getName();

        }

        public void  setSource(URL url) throws IOException {

                File f = new File(url.getFile());

                File fAux = null;

                if(f.isAbsolute()){

                        sourceFile = url;

                        fAux=f;

                        isRelativePath=false;

                }

                else{

                        sourceFile = new URL(SymbologyFactory.SymbolLibraryPath + File.separator + f.getPath());

                        fAux= new File(sourceFile.getFile());

                        isRelativePath=true;

                }

                Document svgDoc = loader.loadDocument(fAux.toURI().toString());

                gvtRoot = gvtBuilder.build(ctx, svgDoc);

        renderer.setTree(gvtRoot);

        elt = ((SVGOMDocument)svgDoc).getRootElement();

        }

        public Rectangle getBounds() {

                Rectangle2D r = gvtRoot.getBounds();

                return new Rectangle((int) r.getX(),

                                 (int) r.getY(),

                                 (int) r.getWidth(),

                                 (int) r.getHeight());

        }

        public void drawOutline(Graphics2D g, Rectangle r) {

                drawInsideRectangle(g, r);

        }

}