/*
* 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: AbstractSVGDocumentHandler.java 830257 2009-10-27 17:37:14Z vhennebert $ */
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.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;
/** {@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() + ")");
}
}
}