/*
* 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 java.awt.Shape;
import java.awt.geom.Area;
import java.util.Iterator;
import com.kitfox.svg.xml.StyleAttribute;
/**
* @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() {
}
@Override
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
*/
@Override
public void loaderAddChild(SVGLoaderHelper helper, SVGElement child)
throws SVGElementException {
super.loaderAddChild(helper, child);
}
@Override
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.
*
* @param curTime
* @return - true if this node has changed state as a result of the time
* update
* @throws com.kitfox.svg.SVGException
*/
@Override
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();
}
for (int i = 0; i < children.size(); ++i) {
SVGElement ele = (SVGElement) children.get(i);
ele.updateTime(curTime);
}
return shapeChange;
}
}