/*
* 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, 9:00 AM
*/
package com.kitfox.svg;
import com.kitfox.svg.xml.StyleAttribute;
import java.awt.Shape;
import java.awt.geom.AffineTransform;
import java.awt.geom.Rectangle2D;
/**
* Maintains bounding box for this element
*
* @author Mark McKay
* @author <a href="mailto:mark@kitfox.com">Mark McKay</a>
*/
abstract public class TransformableElement extends SVGElement
{
AffineTransform xform = null;
/**
* Creates a new instance of BoundedElement
*/
public TransformableElement()
{
}
public TransformableElement(String id, SVGElement parent)
{
super(id, parent);
}
/**
* Fetches a copy of the cached AffineTransform. Note that this value will
* only be valid after the node has been updated.
*
* @return
*/
public AffineTransform getXForm()
{
return xform != null ? new AffineTransform(xform) : null;
}
/*
public void loaderStartElement(SVGLoaderHelper helper, Attributes attrs, SVGElement parent)
{
//Load style string
super.loaderStartElement(helper, attrs, parent);
String transform = attrs.getValue("transform");
if (transform != null)
{
xform = parseTransform(transform);
}
}
*/
protected void build() throws SVGException
{
super.build();
StyleAttribute sty = new StyleAttribute();
if (getPres(sty.setName("transform")))
{
xform = parseTransform(sty.getStringValue());
}
}
protected Shape shapeToParent(Shape shape)
{
if (xform == null)
{
return shape;
}
return xform.createTransformedShape(shape);
}
protected Rectangle2D boundsToParent(Rectangle2D rect)
{
if (xform == null)
{
return rect;
}
return xform.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
{
StyleAttribute sty = new StyleAttribute();
if (getPres(sty.setName("transform")))
{
AffineTransform newXform = parseTransform(sty.getStringValue());
if (!newXform.equals(xform))
{
xform = newXform;
return true;
}
}
return false;
}
}