/*
* 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: AFPPageOverlayElement.java 830929 2009-10-29 13:19:36Z maxberger $ */
package org.apache.fop.render.afp.extensions;
import org.xml.sax.Attributes;
import org.xml.sax.Locator;
import org.apache.fop.apps.FOPException;
import org.apache.fop.fo.Constants;
import org.apache.fop.fo.FONode;
import org.apache.fop.fo.PropertyList;
import org.apache.fop.fo.extensions.ExtensionAttachment;
import org.apache.fop.afp.AFPPaintingState;
import org.apache.fop.afp.AFPUnitConverter;
import org.apache.xmlgraphics.util.UnitConv;
/**
* This class extends the org.apache.fop.render.afp.extensions.AbstractAFPExtensionObject class.
* This object will be used to map the page overlay object in AFPElementMapping.
* <p/>
*/
public class AFPPageOverlayElement extends AbstractAFPExtensionObject {
private static final String ATT_X = "x";
private static final String ATT_Y = "y";
/**
* Constructs an AFP object (called by Maker).
*
* @param parent the parent formatting object
* @param name the name of the afp element
*/
public AFPPageOverlayElement(FONode parent, String name) {
super(parent, name);
}
private AFPPageOverlay getPageSetupAttachment() {
return (AFPPageOverlay)getExtensionAttachment();
}
/** {@inheritDoc} */
protected void startOfNode() throws FOPException {
super.startOfNode();
if (AFPElementMapping.INCLUDE_PAGE_OVERLAY.equals(getLocalName())) {
if (parent.getNameId() != Constants.FO_SIMPLE_PAGE_MASTER
&& parent.getNameId() != Constants.FO_PAGE_SEQUENCE) {
invalidChildError(getLocator(), parent.getName(), getNamespaceURI(), getName(),
"rule.childOfPageSequenceOrSPM");
}
} else {
if (parent.getNameId() != Constants.FO_SIMPLE_PAGE_MASTER) {
invalidChildError(getLocator(), parent.getName(), getNamespaceURI(), getName(),
"rule.childOfSPM");
}
}
}
/** {@inheritDoc} */
public void processNode(String elementName, Locator locator,
Attributes attlist, PropertyList propertyList)
throws FOPException {
super.processNode(elementName, locator, attlist, propertyList);
AFPPageOverlay pageOverlay = getPageSetupAttachment();
if (AFPElementMapping.INCLUDE_PAGE_OVERLAY.equals(elementName)) {
// convert user specific units to mpts and set the coordinates for the page overlay
AFPPaintingState paintingState = new AFPPaintingState();
AFPUnitConverter unitConverter = new AFPUnitConverter(paintingState);
int x = (int)unitConverter.mpt2units(UnitConv.convert(attlist.getValue(ATT_X)));
int y = (int)unitConverter.mpt2units(UnitConv.convert(attlist.getValue(ATT_Y)));
pageOverlay.setX(x);
pageOverlay.setY(y);
}
}
/** {@inheritDoc} */
protected ExtensionAttachment instantiateExtensionAttachment() {
return new AFPPageOverlay();
}
}