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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.AFPDataObjectInfo;
import org.apache.fop.afp.AFPObjectAreaInfo;
import org.apache.fop.afp.AFPResourceInfo;
import org.apache.fop.afp.AFPResourceLevel;
import org.apache.fop.afp.Factory;
import org.apache.fop.afp.modca.triplets.MappingOptionTriplet;
import org.apache.fop.afp.util.BinaryUtils;
/**
* Object containers are MO:DCA objects that envelop and carry object data.
*/
public class ObjectContainer extends AbstractDataObject {
/** the object container data maximum length */
private static final int MAX_DATA_LEN = 32759;
private byte[] data;
/**
* Main constructor
*
* @param factory the object factory
* @param name the name of this object container
*/
public ObjectContainer(Factory factory, String name) {
super(factory, name);
}
/** {@inheritDoc} */
protected void writeStart(OutputStream os) throws IOException {
byte[] headerData = new byte[17];
copySF(headerData, Type.BEGIN, Category.OBJECT_CONTAINER);
// Set the total record length
int containerLen = headerData.length + getTripletDataLength() - 1;
byte[] len = BinaryUtils.convert(containerLen, 2);
headerData[1] = len[0]; // Length byte 1
headerData[2] = len[1]; // Length byte 2
os.write(headerData);
}
/** {@inheritDoc} */
protected void writeContent(OutputStream os) throws IOException {
super.writeContent(os); // write triplets and OEG
// write OCDs
byte[] dataHeader = new byte[9];
copySF(dataHeader, SF_CLASS, Type.DATA, Category.OBJECT_CONTAINER);
final int lengthOffset = 1;
if (data != null) {
writeChunksToStream(data, dataHeader, lengthOffset, MAX_DATA_LEN, os);
}
}
/** {@inheritDoc} */
protected void writeEnd(OutputStream os) throws IOException {
byte[] data = new byte[17];
copySF(data, Type.END, Category.OBJECT_CONTAINER);
os.write(data);
}
/** {@inheritDoc} */
public void setViewport(AFPDataObjectInfo dataObjectInfo) {
AFPResourceInfo resourceInfo = dataObjectInfo.getResourceInfo();
AFPResourceLevel resourceLevel = resourceInfo.getLevel();
// only need to set MCD and CDD when OC when is inlined (pre-2000 apps)
if (resourceLevel.isInline()) {
super.setViewport(dataObjectInfo);
MapContainerData mapContainerData
= factory.createMapContainerData(MappingOptionTriplet.SCALE_TO_FIT);
getObjectEnvironmentGroup().setMapContainerData(mapContainerData);
int dataWidth = dataObjectInfo.getDataWidth();
int dataHeight = dataObjectInfo.getDataHeight();
AFPObjectAreaInfo objectAreaInfo = dataObjectInfo.getObjectAreaInfo();
int widthRes = objectAreaInfo.getWidthRes();
int heightRes = objectAreaInfo.getHeightRes();
ContainerDataDescriptor containerDataDescriptor
= factory.createContainerDataDescriptor(
dataWidth, dataHeight, widthRes, heightRes);
getObjectEnvironmentGroup().setDataDescriptor(containerDataDescriptor);
}
}
/**
* Sets the inputstream for the the object container data
*
* @param inputStream the inputstream for the object container data
*/
public void setData(byte[] data) {
this.data = data;
}
}
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