| /* |
| |
| Licensed to the Apache Software Foundation (ASF) under one or more |
| contributor license agreements. See the NOTICE file distributed with |
| this work for additional information regarding copyright ownership. |
| The ASF licenses this file to You under the Apache License, Version 2.0 |
| (the "License"); you may not use this file except in compliance with |
| the License. You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| |
| */ |
| package org.apache.batik.bridge; |
| |
| import java.awt.geom.Ellipse2D; |
| import java.awt.geom.Rectangle2D; |
| |
| import org.apache.batik.dom.svg.AbstractSVGAnimatedLength; |
| import org.apache.batik.dom.svg.AnimatedLiveAttributeValue; |
| import org.apache.batik.dom.svg.LiveAttributeException; |
| import org.apache.batik.dom.svg.SVGOMCircleElement; |
| import org.apache.batik.gvt.ShapeNode; |
| import org.apache.batik.gvt.ShapePainter; |
| |
| import org.w3c.dom.Element; |
| |
| /** |
| * Bridge class for the <circle> element. |
| * |
| * @author <a href="mailto:tkormann@apache.org">Thierry Kormann</a> |
| * @version $Id$ |
| */ |
| public class SVGCircleElementBridge extends SVGShapeElementBridge { |
| |
| /** |
| * Constructs a new bridge for the <circle> element. |
| */ |
| public SVGCircleElementBridge() {} |
| |
| /** |
| * Returns 'circle'. |
| */ |
| public String getLocalName() { |
| return SVG_CIRCLE_TAG; |
| } |
| |
| /** |
| * Returns a new instance of this bridge. |
| */ |
| public Bridge getInstance() { |
| return new SVGCircleElementBridge(); |
| } |
| |
| /** |
| * Constructs a circle according to the specified parameters. |
| * |
| * @param ctx the bridge context to use |
| * @param e the element that describes a rect element |
| * @param shapeNode the shape node to initialize |
| */ |
| protected void buildShape(BridgeContext ctx, |
| Element e, |
| ShapeNode shapeNode) { |
| try { |
| SVGOMCircleElement ce = (SVGOMCircleElement) e; |
| |
| // 'cx' attribute - default is 0 |
| AbstractSVGAnimatedLength _cx = |
| (AbstractSVGAnimatedLength) ce.getCx(); |
| float cx = _cx.getCheckedValue(); |
| |
| // 'cy' attribute - default is 0 |
| AbstractSVGAnimatedLength _cy = |
| (AbstractSVGAnimatedLength) ce.getCy(); |
| float cy = _cy.getCheckedValue(); |
| |
| // 'r' attribute - required |
| AbstractSVGAnimatedLength _r = |
| (AbstractSVGAnimatedLength) ce.getR(); |
| float r = _r.getCheckedValue(); |
| |
| float x = cx - r; |
| float y = cy - r; |
| float w = r * 2; |
| shapeNode.setShape(new Ellipse2D.Float(x, y, w, w)); |
| } catch (LiveAttributeException ex) { |
| throw new BridgeException(ctx, ex); |
| } |
| } |
| |
| // BridgeUpdateHandler implementation ////////////////////////////////// |
| |
| /** |
| * Invoked when the animated value of an animatable attribute has changed. |
| */ |
| public void handleAnimatedAttributeChanged |
| (AnimatedLiveAttributeValue alav) { |
| if (alav.getNamespaceURI() == null) { |
| String ln = alav.getLocalName(); |
| if (ln.equals(SVG_CX_ATTRIBUTE) |
| || ln.equals(SVG_CY_ATTRIBUTE) |
| || ln.equals(SVG_R_ATTRIBUTE)) { |
| buildShape(ctx, e, (ShapeNode)node); |
| handleGeometryChanged(); |
| return; |
| } |
| } |
| super.handleAnimatedAttributeChanged(alav); |
| } |
| |
| protected ShapePainter createShapePainter(BridgeContext ctx, |
| Element e, |
| ShapeNode shapeNode) { |
| Rectangle2D r2d = shapeNode.getShape().getBounds2D(); |
| if ((r2d.getWidth() == 0) || (r2d.getHeight() == 0)) |
| return null; |
| return super.createShapePainter(ctx, e, shapeNode); |
| } |
| } |