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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 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.*;
import java.awt.geom.*;
import java.util.*;
import com.kitfox.svg.xml.*;
import org.xml.sax.*;
/**
* @author Mark McKay
* @author <a href="mailto:mark@kitfox.com">Mark McKay</a>
*/
public class ClipPath extends SVGElement
{
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 void loaderStartElement(SVGLoaderHelper helper, Attributes attrs, SVGElement parent)
{
//Load style string
super.loaderStartElement(helper, attrs, parent);
String clipPathUnits = attrs.getValue("clipPathUnits");
if (clipPathUnits.equals("objectBoundingBox")) this.clipPathUnits = CP_OBJECT_BOUNDING_BOX;
}
*/
/**
* 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);
// if (child instanceof ShapeElement) members.add(child);
}
/*
public void loaderEndElement(SVGLoaderHelper helper)
{
// super.loaderEndElement(helper);
// build();
}
*/
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.size() == 0) 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
{
// if (trackManager.getNumTracks() == 0) return false;
//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;
}
}
return shapeChange;
}
}
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