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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.FullyQualifiedNameTriplet;
import org.apache.fop.afp.util.BinaryUtils;
/**
* The Preprocess Presentation Object structured field specifies presentation
* parameters for a data object that has been mapped as a resource.
*/
public class PreprocessPresentationObject extends AbstractTripletStructuredObject {
private static final byte TYPE_OTHER = (byte)0x92;
private static final byte TYPE_OVERLAY = (byte)0xDF;
private static final byte TYPE_IMAGE = (byte)0xFB;
private byte objType = TYPE_OTHER;
private byte objOrent = 0; // object always processed at 0 degree orientation
private int objXOffset = -1;
private int objYOffset = -1;
/**
* Main constructor
*
* @param prePresObj the presentation object to be preprocessed
*/
public PreprocessPresentationObject(AbstractTripletStructuredObject prePresObj) {
if (prePresObj instanceof ImageObject || prePresObj instanceof Overlay) {
if (prePresObj instanceof ImageObject) {
this.objType = TYPE_IMAGE;
} else {
this.objType = TYPE_OVERLAY;
}
setFullyQualifiedName(
FullyQualifiedNameTriplet.TYPE_BEGIN_RESOURCE_OBJECT_REF,
FullyQualifiedNameTriplet.FORMAT_CHARSTR,
prePresObj.getFullyQualifiedName());
} else {
this.objType = TYPE_OTHER;
}
}
public static final byte ORIENTATION_ZERO_DEGREES = 1;
public static final byte ORIENTATION_90_DEGREES = 2;
public static final byte ORIENTATION_180_DEGREES = 4;
public static final byte ORIENTATION_270_DEGREES = 8;
/**
* Sets the object orientations relative to media leading edge
*
* @param orientation the object orientations relative to media leading edge
*/
public void setOrientation(byte orientation) {
objOrent = orientation;
}
/**
* Sets the X axis origin for object content
*
* @param xOffset the X axis origin for object content
*/
public void setXOffset(int xOffset) {
this.objXOffset = xOffset;
}
/**
* Sets the Y axis origin for object content
*
* @param yOffset the Y axis origin for object content
*/
public void setYOffset(int yOffset) {
this.objYOffset = yOffset;
}
/** {@inheritDoc} */
public void writeStart(OutputStream os) throws IOException {
super.writeStart(os);
byte[] data = new byte[9];
copySF(data, Type.PROCESS, Category.DATA_RESOURCE);
byte[] l = BinaryUtils.convert(19 + getTripletDataLength(), 2);
data[1] = l[0]; // Length byte 1
data[2] = l[1]; // Length byte 1
os.write(data);
}
/** {@inheritDoc} */
public void writeContent(OutputStream os) throws IOException {
byte[] data = new byte[12];
byte[] l = BinaryUtils.convert(12 + getTripletDataLength(), 2);
data[0] = l[0]; // RGLength
data[1] = l[1]; // RGLength
data[2] = objType; // ObjType
data[3] = 0x00; // Reserved
data[4] = 0x00; // Reserved
data[5] = objOrent; // ObjOrent
if (objXOffset > 0) {
byte[] xOff = BinaryUtils.convert(objYOffset, 3);
data[6] = xOff[0]; // XocaOset (not specified)
data[7] = xOff[1]; // XocaOset
data[8] = xOff[2]; // XocaOset
} else {
data[6] = (byte)0xFF; // XocaOset (not specified)
data[7] = (byte)0xFF; // XocaOset
data[8] = (byte)0xFF; // XocaOset
}
if (objYOffset > 0) {
byte[] yOff = BinaryUtils.convert(objYOffset, 3);
data[9] = yOff[0]; // YocaOset (not specified)
data[10] = yOff[1]; // YocaOset
data[11] = yOff[2]; // YocaOset
} else {
data[9] = (byte)0xFF; // YocaOset (not specified)
data[10] = (byte)0xFF; // YocaOset
data[11] = (byte)0xFF; // YocaOset
}
os.write(data);
// Triplets
super.writeContent(os);
}
}
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