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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.modca.triplets.DescriptorPositionTriplet;
import org.apache.fop.afp.modca.triplets.MeasurementUnitsTriplet;
import org.apache.fop.afp.modca.triplets.ObjectAreaSizeTriplet;
import org.apache.fop.afp.util.BinaryUtils;
/**
* The Object Area Descriptor structured field specifies the size and attributes
* of an object area presentation space.
*/
public class ObjectAreaDescriptor extends AbstractDescriptor {
/**
* Construct an object area descriptor for the specified object width
* and object height.
*
* @param width the object width.
* @param height the object height.
* @param widthRes the object width resolution.
* @param heightRes the object height resolution.
*/
public ObjectAreaDescriptor(int width, int height, int widthRes, int heightRes) {
super(width, height, widthRes, heightRes);
}
private static final byte OBJECT_AREA_POSITION_ID = 0x01;
/** {@inheritDoc} */
public void writeToStream(OutputStream os) throws IOException {
byte[] data = new byte[9];
copySF(data, Type.DESCRIPTOR, Category.OBJECT_AREA);
addTriplet(new DescriptorPositionTriplet(OBJECT_AREA_POSITION_ID));
addTriplet(new MeasurementUnitsTriplet(widthRes, heightRes));
addTriplet(new ObjectAreaSizeTriplet(width, height));
/* not allowed in Presentation Interchange Set 1
addTriplet(new PresentationSpaceResetMixingTriplet(
PresentationSpaceResetMixingTriplet.NOT_RESET));
*/
int tripletDataLength = getTripletDataLength();
byte[] len = BinaryUtils.convert(data.length + tripletDataLength - 1, 2);
data[1] = len[0]; // Length
data[2] = len[1];
os.write(data);
writeTriplets(os);
}
}
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