/*
* 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.Shape;
import java.awt.geom.Area;
import java.util.Iterator;
/**
* @author Mark McKay
* @author <a href="mailto:mark@kitfox.com">Mark McKay</a>
*/
public class ClipPath extends SVGElement
{
public static final String TAG_NAME = "clippath";
public static final int CP_USER_SPACE_ON_USE = 0;
public static final int CP_OBJECT_BOUNDING_BOX = 1;
int clipPathUnits = CP_USER_SPACE_ON_USE;
/**
* Creates a new instance of Stop
*/
public ClipPath()
{
}
public String getTagName()
{
return TAG_NAME;
}
/**
* Called after the start element but before the end element to indicate
* each child tag that has been processed
*/
public void loaderAddChild(SVGLoaderHelper helper, SVGElement child) throws SVGElementException
{
super.loaderAddChild(helper, child);
}
protected void build() throws SVGException
{
super.build();
StyleAttribute sty = new StyleAttribute();
clipPathUnits = (getPres(sty.setName("clipPathUnits"))
&& sty.getStringValue().equals("objectBoundingBox"))
? CP_OBJECT_BOUNDING_BOX
: CP_USER_SPACE_ON_USE;
}
public int getClipPathUnits()
{
return clipPathUnits;
}
public Shape getClipPathShape()
{
if (children.isEmpty())
{
return null;
}
if (children.size() == 1)
{
return ((ShapeElement) children.get(0)).getShape();
}
Area clipArea = null;
for (Iterator it = children.iterator(); it.hasNext();)
{
ShapeElement se = (ShapeElement) it.next();
if (clipArea == null)
{
Shape shape = se.getShape();
if (shape != null)
{
clipArea = new Area(se.getShape());
}
continue;
}
Shape shape = se.getShape();
if (shape != null)
{
clipArea.intersect(new Area(shape));
}
}
return clipArea;
}
/**
* 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
{
//Get current values for parameters
StyleAttribute sty = new StyleAttribute();
boolean shapeChange = false;
if (getPres(sty.setName("clipPathUnits")))
{
String newUnitsStrn = sty.getStringValue();
int newUnits = newUnitsStrn.equals("objectBoundingBox")
? CP_OBJECT_BOUNDING_BOX
: CP_USER_SPACE_ON_USE;
if (newUnits != clipPathUnits)
{
clipPathUnits = newUnits;
shapeChange = true;
}
}
if (shapeChange)
{
build();
}
return shapeChange;
}
}