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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.tools.BinaryUtils;
/**
* An Include Object structured field references an object on a page or overlay.
* It optionally contains parameters that identify the object and that specify
* presentation parameters such as object position, size, orientation, mapping,
* and default color.
* <p>
* Where the presentation parameters conflict with parameters specified in the
* object's environment group (OEG), the parameters in the Include Object
* structured field override. If the referenced object is a page segment, the
* IOB parameters override the corresponding environment group parameters on all
* data objects in the page segment.
* </p>
*/
public class IncludeObject extends AbstractNamedAFPObject {
/**
* The object type
*/
private byte objectType = (byte) 0x92;
/**
* The orientation on the include object
*/
private int orientation = 0;
/**
* Constructor for the include object with the specified name, the name must
* be a fixed length of eight characters and is the name of the referenced
* object.
*
* @param name
* the name of the image
*/
public IncludeObject(String name) {
super(name);
objectType = (byte) 0xFB;
}
/**
* Sets the orientation to use for the Include Object.
*
* @param orientation
* The orientation (0,90, 180, 270)
*/
public void setOrientation(int orientation) {
if (orientation == 0 || orientation == 90 || orientation == 180
|| orientation == 270) {
this.orientation = orientation;
} else {
throw new IllegalArgumentException(
"The orientation must be one of the values 0, 90, 180, 270");
}
}
/**
* Accessor method to write the AFP datastream for the Include Object
* @param os The stream to write to
* @throws java.io.IOException thrown if an I/O exception of some sort has occurred
*/
public void writeDataStream(OutputStream os)
throws IOException {
byte[] data = new byte[37];
data[0] = 0x5A;
// Set the total record length
byte[] rl1 = BinaryUtils.convert(36, 2); //Ignore first byte
data[1] = rl1[0];
data[2] = rl1[1];
// Structured field ID for a IOB
data[3] = (byte) 0xD3;
data[4] = (byte) 0xAF;
data[5] = (byte) 0xC3;
data[6] = 0x00; // Reserved
data[7] = 0x00; // Reserved
data[8] = 0x00; // Reserved
for (int i = 0; i < nameBytes.length; i++) {
data[9 + i] = nameBytes[i];
}
data[17] = 0x00;
data[18] = objectType;
// XoaOset
data[20] = (byte) 0xFF;
data[21] = (byte) 0xFF;
data[22] = (byte) 0xFF;
// YoaOset
data[23] = (byte) 0xFF;
data[24] = (byte) 0xFF;
data[25] = (byte) 0xFF;
switch (orientation) {
case 90:
data[26] = 0x2D;
data[27] = 0x00;
data[28] = 0x5A;
data[29] = 0x00;
break;
case 180:
data[26] = 0x5A;
data[27] = 0x00;
data[28] = (byte) 0x87;
data[29] = 0x00;
break;
case 270:
data[26] = (byte) 0x87;
data[27] = 0x00;
data[28] = 0x00;
data[29] = 0x00;
break;
default:
data[26] = 0x00;
data[27] = 0x00;
data[28] = 0x2D;
data[29] = 0x00;
break;
}
// XocaOset
data[30] = (byte) 0xFF;
data[31] = (byte) 0xFF;
data[32] = (byte) 0xFF;
// YocaOset
data[33] = (byte) 0xFF;
data[34] = (byte) 0xFF;
data[35] = (byte) 0xFF;
data[36] = 0x01;
os.write(data);
}
}
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