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SVG Salamander - tools and components for SVG rendering, manipulation and animation
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/*
 * Stop.java
 *
 *
 *  The Salamander Project - 2D and 3D graphics libraries in Java
 *  Copyright (C) 2004 Mark McKay
 *
 *  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
 *
 *  Mark McKay can be contacted at [email protected].  Salamander and other
 *  projects can be found at http://www.kitfox.com
 *
 * Created on January 26, 2004, 1:56 AM
 */

package com.kitfox.svg;

import com.kitfox.svg.xml.StyleAttribute;
import java.awt.*;
import java.awt.geom.*;
import java.util.*;

import com.kitfox.svg.xml.*;
import org.xml.sax.*;

/**
 * @author Mark McKay
 * @author Mark McKay
 */
public class Symbol extends Group
{
    AffineTransform viewXform;
    Rectangle2D viewBox;

    /** Creates a new instance of Stop */
    public Symbol() {
    }
/*
    public void loaderStartElement(SVGLoaderHelper helper, Attributes attrs, SVGElement parent)
    {
		//Load style string
        super.loaderStartElement(helper, attrs, parent);

        String viewBoxStrn = attrs.getValue("viewBox");
        if (viewBoxStrn != null)
        {
            float[] dim = XMLParseUtil.parseFloatList(viewBoxStrn);
            viewBox = new Rectangle2D.Float(dim[0], dim[1], dim[2], dim[3]);
        }
    }
*/
    /*
    public void loaderEndElement(SVGLoaderHelper helper)
    {
        if (viewBox == null)
        {
            viewBox = super.getBoundingBox();
        }

        //Transform pattern onto unit square
        viewXform = new AffineTransform();
        viewXform.scale(1.0 / viewBox.getWidth(), 1.0 / viewBox.getHeight());
        viewXform.translate(-viewBox.getX(), -viewBox.getY());
    }
*/
    
    protected void build() throws SVGException
    {
        super.build();
        
        StyleAttribute sty = new StyleAttribute();
        
//        sty = getPres("unicode");
//        if (sty != null) unicode = sty.getStringValue();


        if (getPres(sty.setName("viewBox")))
        {
            float[] dim = sty.getFloatList();
            viewBox = new Rectangle2D.Float(dim[0], dim[1], dim[2], dim[3]);
        }
        
        if (viewBox == null)
        {
//            viewBox = super.getBoundingBox();
            viewBox = new Rectangle(0, 0, 1, 1);
        }

        //Transform pattern onto unit square
        viewXform = new AffineTransform();
        viewXform.scale(1.0 / viewBox.getWidth(), 1.0 / viewBox.getHeight());
        viewXform.translate(-viewBox.getX(), -viewBox.getY());
    }

    protected boolean outsideClip(Graphics2D g) throws SVGException
    {
        g.getClipBounds(clipBounds);
        Rectangle2D rect = super.getBoundingBox();
        if (rect.intersects(clipBounds))
        {
            return false;
        }

        return true;

    }

    public void render(Graphics2D g) throws SVGException
    {
        AffineTransform oldXform = g.getTransform();
        g.transform(viewXform);

        super.render(g);

        g.setTransform(oldXform);
    }

    public Shape getShape()
    {
        Shape shape = super.getShape();
        return viewXform.createTransformedShape(shape);
    }

    public Rectangle2D getBoundingBox() throws SVGException
    {
        Rectangle2D rect = super.getBoundingBox();
        return viewXform.createTransformedShape(rect).getBounds2D();
    }

    /**
     * Updates all attributes in this diagram associated with a time event.
     * Ie, all attributes with track information.
     * @return - true if this node has changed state as a result of the time
     * update
     */
    public boolean updateTime(double curTime) throws SVGException
    {
//        if (trackManager.getNumTracks() == 0) return false;
        boolean changeState = super.updateTime(curTime);
        
        //View box properties do not change
        
        return changeState;
    }

}