/* * 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; /** * @author Mark McKay * @author Mark McKay */ 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 (SVGElement svgElement : children) { ShapeElement se = (ShapeElement) svgElement; 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 Time at which to evaluate node * @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; } }