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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.
*/
/* $Id$ */
package org.apache.fop.afp.modca;
import java.io.IOException;
import java.io.OutputStream;
import org.apache.fop.afp.Factory;
/**
* An overlay is a MO:DCA-P resource object.
*
* It may be stored in an external resource library or it may be
* carried in a resource group. An overlay is similar to a page in
* that it defines its own environment and carries the same data objects.
*/
public class Overlay extends PageObject {
/**
* Construct a new overlay object for the specified name argument, the overlay
* name should be an 8 character identifier.
*
* @param factory
* the resource manager of the page.
* @param name
* the name of the page.
* @param width
* the width of the page.
* @param height
* the height of the page.
* @param rotation
* the rotation of the page.
* @param widthResolution
* the width resolution of the page.
* @param heightResolution
* the height resolution of the page.
*/
public Overlay(Factory factory,
String name, int width, int height, int rotation,
int widthResolution, int heightResolution) {
super(factory, name, width, height, rotation, widthResolution, heightResolution);
}
/** {@inheritDoc} */
protected void writeStart(OutputStream os) throws IOException {
byte[] data = new byte[17];
copySF(data, Type.BEGIN, Category.OVERLAY);
os.write(data);
}
/** {@inheritDoc} */
protected void writeContent(OutputStream os) throws IOException {
super.writeContent(os);
getActiveEnvironmentGroup().writeToStream(os);
writeObjects(includePageSegments, os);
writeObjects(tagLogicalElements, os);
writeObjects(objects, os);
}
/** {@inheritDoc} */
protected void writeEnd(OutputStream os) throws IOException {
byte[] data = new byte[17];
copySF(data, Type.END, Category.OVERLAY);
os.write(data);
}
}
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