| /* |
| |
| 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.svggen; |
| |
| import java.util.List; |
| import java.util.ArrayList; |
| |
| import org.w3c.dom.Attr; |
| import org.w3c.dom.Element; |
| import org.w3c.dom.NamedNodeMap; |
| import org.w3c.dom.Node; |
| import org.w3c.dom.NodeList; |
| |
| /** |
| * This utility class converts a standard SVG document that uses |
| * attribute into one that uses the CSS style attribute instead. |
| * |
| * @author <a href="mailto:vincent.hardy@eng.sun.com">Vincent Hardy</a> |
| * @version $Id$ |
| */ |
| public class SVGCSSStyler implements SVGSyntax{ |
| |
| private static final char CSS_PROPERTY_VALUE_SEPARATOR = ':'; |
| private static final char CSS_RULE_SEPARATOR = ';'; |
| private static final char SPACE = ' '; |
| |
| /** |
| * Invoking this method removes all the styling attributes |
| * (such as 'fill' or 'fill-opacity') from the input element |
| * and its descendant and replaces them with their CSS2 |
| * property counterparts. |
| * |
| * @param node SVG Node to be converted to use style |
| */ |
| public static void style(Node node){ |
| NamedNodeMap attributes = node.getAttributes(); |
| if (attributes != null){ |
| // Has to be an Element, as it has attributes |
| // According to spec. |
| Element element = (Element)node; |
| StringBuffer styleAttrBuffer = new StringBuffer(); |
| int nAttr = attributes.getLength(); |
| List toBeRemoved = new ArrayList(); |
| for(int i=0; i<nAttr; i++){ |
| Attr attr = (Attr)attributes.item(i); |
| String attrName = attr.getName(); |
| if(SVGStylingAttributes.set.contains( attrName )){ |
| // System.out.println("Found new style attribute"); |
| styleAttrBuffer.append( attrName ); |
| styleAttrBuffer.append(CSS_PROPERTY_VALUE_SEPARATOR); |
| styleAttrBuffer.append(attr.getValue()); |
| styleAttrBuffer.append(CSS_RULE_SEPARATOR); |
| styleAttrBuffer.append(SPACE); |
| toBeRemoved.add( attrName ); |
| } |
| } |
| |
| if(styleAttrBuffer.length() > 0){ |
| // There were some styling attributes |
| // System.out.println("Setting style attribute on node: " + styleAttrBuffer.toString().trim()); |
| element.setAttributeNS(null, |
| SVG_STYLE_ATTRIBUTE, |
| styleAttrBuffer.toString().trim()); |
| |
| int n = toBeRemoved.size(); |
| for (Object aToBeRemoved : toBeRemoved) { |
| element.removeAttribute((String) aToBeRemoved); |
| } |
| } |
| // else |
| // System.out.println("NO STYLE PROPERTIES"); |
| } |
| |
| // Now, process child elements |
| NodeList children = node.getChildNodes(); |
| int nChildren = children.getLength(); |
| for(int i=0; i<nChildren; i++){ |
| Node child = children.item(i); |
| style(child); |
| } |
| |
| } |
| } |