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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.render.afp.modca;
import java.io.IOException;
import java.io.OutputStream;
import org.apache.fop.render.afp.ResourceInfo;
import org.apache.fop.render.afp.modca.triplets.Triplet;
import org.apache.fop.render.afp.tools.BinaryUtils;
/**
* This resource structured field begins an envelope that is used to carry
* resource objects in print-file-level (external) resource groups.
*/
public class ResourceObject extends AbstractPreparedAFPObject {
/**
* Resource object types
*/
private static final byte GRAPHICS_OBJECT = 0x03;
private static final byte BARCODE_OBJECT = 0x05;
private static final byte IMAGE_OBJECT = 0x06;
private static final byte FONT_CHARACTER_SET_OBJECT = 0x40;
private static final byte CODE_PAGE_OBJECT = 0x41;
private static final byte CODED_FONT_OBJECT = 0x42;
private static final byte OBJECT_CONTAINER = (byte) 0x92;
private static final byte DOCUMENT_OBJECT = (byte) 0xA8;
private static final byte PAGE_SEGMENT_OBJECT = (byte) 0xFB;
private static final byte OVERLAY_OBJECT = (byte) 0xFC;
private static final byte PAGEDEF_OBJECT = (byte) 0xFD;
private static final byte FORMDEF_OBJECT = (byte) 0xFE;
/**
* the referenced data object
*/
private AbstractNamedAFPObject dataObj = null;
/**
* Default constructor
*
* @param name the name of this resource (reference id)
* @param dataObj the resource object to be added
*/
public ResourceObject(String name) {
super(name);
}
/**
* Sets the data object referenced by this resource object
* @param dataObj the data object
*/
public void setReferencedObject(AbstractNamedAFPObject dataObj) {
this.dataObj = dataObj;
setResourceObjectType(dataObj);
}
/**
* @return the resource object contained in this envelope
*/
public AbstractNamedAFPObject getReferencedObject() {
return this.dataObj;
}
private void setResourceObjectType(AbstractNamedAFPObject resourceObj) {
byte type;
if (resourceObj instanceof ImageObject) {
type = IMAGE_OBJECT;
} else if (resourceObj instanceof GraphicsObject) {
type = GRAPHICS_OBJECT;
} else if (resourceObj instanceof Document) {
type = DOCUMENT_OBJECT;
} else if (resourceObj instanceof PageSegment) {
type = PAGE_SEGMENT_OBJECT;
} else if (resourceObj instanceof Overlay) {
type = OVERLAY_OBJECT;
} else {
throw new UnsupportedOperationException(
"Unsupported resource object type " + resourceObj);
}
getTriplets().add(new ResourceObjectTypeTriplet(type));
}
/**
* {@inheritDoc}
*/
protected void writeStart(OutputStream os) throws IOException {
super.writeStart(os);
// Set the total record length
byte[] len = BinaryUtils.convert(18 + getTripletDataLength(), 2);
byte[] data = new byte[] {
0x5A, // Structured field identifier
len[0], // Length byte 1
len[1], // Length byte 2
(byte)0xD3, // Structured field id byte 1
(byte)0xA8, // Structured field id byte 2
(byte)0xCE, // Structured field id byte 3
0x00, // Flags
0x00, // Reserved
0x00, // Reserved
nameBytes[0],
nameBytes[1],
nameBytes[2],
nameBytes[3],
nameBytes[4],
nameBytes[5],
nameBytes[6],
nameBytes[7],
0x00, // Reserved
0x00, // Reserved
};
os.write(data);
}
/**
* {@inheritDoc}
*/
protected void writeContent(OutputStream os) throws IOException {
super.writeContent(os); // write triplets
if (dataObj != null) {
dataObj.writeDataStream(os);
}
}
/**
* {@inheritDoc}
*/
protected void writeEnd(OutputStream os) throws IOException {
byte[] data = new byte[] {
0x5A, // Structured field identifier
0x00, // Length byte 1
0x10, // Length byte 2
(byte)0xD3, // Structured field id byte 1
(byte)0xA9, // Structured field id byte 2
(byte)0xCE, // Structured field id byte 3
0x00, // Flags
0x00, // Reserved
0x00, // Reserved
nameBytes[0],
nameBytes[1],
nameBytes[2],
nameBytes[3],
nameBytes[4],
nameBytes[5],
nameBytes[6],
nameBytes[7],
};
os.write(data);
}
/**
* {@inheritDoc}
*/
public String toString() {
return this.getName();
}
private class ResourceObjectTypeTriplet extends Triplet {
private static final byte RESOURCE_OBJECT = 0x21;
/**
* Main constructor
*
* @param type
* the resource type
*/
public ResourceObjectTypeTriplet(byte type) {
super(RESOURCE_OBJECT,
new byte[] {
type,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
}
);
}
}
}
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