/* * 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. */ /* $Id$ */ package org.apache.fop.render.svg; import org.xml.sax.SAXException; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.apache.xmlgraphics.xmp.Metadata; import org.apache.fop.fonts.FontInfo; import org.apache.fop.render.intermediate.AbstractXMLWritingIFDocumentHandler; import org.apache.fop.render.intermediate.IFContext; import org.apache.fop.render.intermediate.IFDocumentHandlerConfigurator; import org.apache.fop.render.intermediate.IFException; import org.apache.fop.render.intermediate.IFState; import org.apache.fop.render.java2d.Java2DUtil; /** * Abstract base class for SVG Painter implementations. */ public abstract class AbstractSVGDocumentHandler extends AbstractXMLWritingIFDocumentHandler implements SVGConstants { /** logging instance */ private static Log log = LogFactory.getLog(AbstractSVGDocumentHandler.class); /** Font configuration */ protected FontInfo fontInfo; /** Holds the intermediate format state */ protected IFState state; private static final int MODE_NORMAL = 0; private static final int MODE_TEXT = 1; private int mode = MODE_NORMAL; public AbstractSVGDocumentHandler(IFContext context) { super(context); } /** {@inheritDoc} */ protected String getMainNamespace() { return NAMESPACE; } /** {@inheritDoc} */ public FontInfo getFontInfo() { return this.fontInfo; } /** {@inheritDoc} */ public void setFontInfo(FontInfo fontInfo) { this.fontInfo = fontInfo; } /** {@inheritDoc} */ public void setDefaultFontInfo(FontInfo fontInfo) { FontInfo fi = Java2DUtil.buildDefaultJava2DBasedFontInfo(fontInfo, getUserAgent()); setFontInfo(fi); } /** {@inheritDoc} */ public IFDocumentHandlerConfigurator getConfigurator() { return null; //No configurator, yet. } /** {@inheritDoc} */ public void startDocumentHeader() throws IFException { try { handler.startElement("defs"); } catch (SAXException e) { throw new IFException("SAX error in startDocumentHeader()", e); } } /** {@inheritDoc} */ public void endDocumentHeader() throws IFException { try { handler.endElement("defs"); } catch (SAXException e) { throw new IFException("SAX error in startDocumentHeader()", e); } } /** {@inheritDoc} */ public void handleExtensionObject(Object extension) throws IFException { if (extension instanceof Metadata) { Metadata meta = (Metadata)extension; try { handler.startElement("metadata"); meta.toSAX(this.handler); handler.endElement("metadata"); } catch (SAXException e) { throw new IFException("SAX error while handling extension object", e); } } else { log.debug("Don't know how to handle extension object. Ignoring: " + extension + " (" + extension.getClass().getName() + ")"); } } }