source: josm/trunk/src/com/kitfox/svg/Symbol.java@ 17333

/*
 * SVG Salamander
 * Copyright (c) 2004, Mark McKay
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or 
 * without modification, are permitted provided that the following
 * conditions are met:
 *
 *   - Redistributions of source code must retain the above 
 *     copyright notice, this list of conditions and the following
 *     disclaimer.
 *   - Redistributions in binary form must reproduce the above
 *     copyright notice, this list of conditions and the following
 *     disclaimer in the documentation and/or other materials 
 *     provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE. 
 * 
 * Mark McKay can be contacted at mark@kitfox.com.  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.Graphics2D;
import java.awt.Rectangle;
import java.awt.Shape;
import java.awt.geom.AffineTransform;
import java.awt.geom.Rectangle2D;

/**
 * @author Mark McKay
 * @author <a href="mailto:mark@kitfox.com">Mark McKay</a>
 */
public class Symbol extends Group
{

    public static final String TAG_NAME = "symbol";
    AffineTransform viewXform;
    Rectangle2D viewBox;

    /**
     * Creates a new instance of Stop
     */
    public Symbol()
    {
    }

    @Override
    public String getTagName()
    {
        return TAG_NAME;
    }

    @Override
    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());
    }

    @Override
    protected boolean outsideClip(Graphics2D g) throws SVGException
    {
        Shape clip = g.getClip();
//        g.getClipBounds(clipBounds);
        Rectangle2D rect = super.getBoundingBox();
        if (clip == null || clip.intersects(rect))
        {
            return false;
        }

        return true;

    }

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

        super.render(g);

        g.setTransform(oldXform);
    }

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

    @Override
    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
     */
    @Override
    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;
    }
}