org.apache.fop.render.afp.extensions.AFPPageOverlayElement Maven / Gradle / Ivy

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Tool to convert CSV and XLS to XML, to transform XML and to convert XML to CSV, HTML, other text files, PDF etc., useful as command line tool and integrated in other projects.

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/*
 * 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 1465599 2013-04-08 11:51:52Z vhennebert $ */

package org.apache.fop.render.afp.extensions;

import org.xml.sax.Attributes;
import org.xml.sax.Locator;

import org.apache.xmlgraphics.util.UnitConv;

import org.apache.fop.afp.AFPPaintingState;
import org.apache.fop.afp.AFPUnitConverter;
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;

/**
 * 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.
 * 
 */
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} */
    public 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();
    }
}