/*
* 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.ioca;
import java.io.IOException;
import java.io.OutputStream;
import org.apache.fop.afp.modca.AbstractAFPObject;
import org.apache.fop.afp.util.BinaryUtils;
/**
* The IM Image Output Control structured field specifies the position and
* orientation of the IM image object area and the mapping of the image points
* to presentation device pels.
*
*/
public class ImageOutputControl extends AbstractAFPObject {
/** the orientation of the image */
private int orientation;
/**
* Specifies the offset, along the X-axis, of the IM image object area
* origin to the origin of the including page
*/
private int xCoord;
/**
* Specifies the offset, along the Y-axis, of the IM image object area
* origin to the origin of the including page
*/
private int yCoord;
/** map an image point to a single presentation device */
private boolean singlePoint = true;
/**
* Constructor for the ImageOutputControl The x parameter specifies the
* offset, along the X-axis, of the IM image object area origin to the
* origin of the including page and the y parameter specifies the offset
* along the Y-axis. The offset is specified in image points and is resolved
* using the units of measure specified for the image in the IID structured
* field.
*
* @param x
* The X-axis offset.
* @param y
* The Y-axis offset.
*/
public ImageOutputControl(int x, int y) {
xCoord = x;
yCoord = y;
}
/** {@inheritDoc} */
public void writeToStream(OutputStream os) throws IOException {
byte[] data = new byte[33];
data[0] = 0x5A;
data[1] = 0x00;
data[2] = 0x20;
data[3] = (byte) 0xD3;
data[4] = (byte) 0xA7;
data[5] = (byte) 0x7B;
data[6] = 0x00;
data[7] = 0x00;
data[8] = 0x00;
// XoaOset
byte[] x1 = BinaryUtils.convert(xCoord, 3);
data[9] = x1[0];
data[10] = x1[1];
data[11] = x1[2];
// YoaOset
byte[] x2 = BinaryUtils.convert(yCoord, 3);
data[12] = x2[0];
data[13] = x2[1];
data[14] = x2[2];
switch (orientation) {
case 0:
// 0 and 90 degrees respectively
data[15] = 0x00;
data[16] = 0x00;
data[17] = 0x2D;
data[18] = 0x00;
break;
case 90:
// 90 and 180 degrees respectively
data[15] = 0x2D;
data[16] = 0x00;
data[17] = 0x5A;
data[18] = 0x00;
break;
case 180:
// 180 and 270 degrees respectively
data[15] = 0x5A;
data[16] = 0x00;
data[17] = (byte) 0x87;
data[18] = 0x00;
break;
case 270:
// 270 and 0 degrees respectively
data[15] = (byte) 0x87;
data[16] = 0x00;
data[17] = 0x00;
data[18] = 0x00;
break;
default:
// 0 and 90 degrees respectively
data[15] = 0x00;
data[16] = 0x00;
data[17] = 0x2D;
data[18] = 0x00;
break;
}
// Constant Data
data[19] = 0x00;
data[20] = 0x00;
data[21] = 0x00;
data[22] = 0x00;
data[23] = 0x00;
data[24] = 0x00;
data[25] = 0x00;
data[26] = 0x00;
if (singlePoint) {
data[27] = 0x03;
data[28] = (byte) 0xE8;
data[29] = 0x03;
data[30] = (byte) 0xE8;
} else {
data[27] = 0x07;
data[28] = (byte) 0xD0;
data[29] = 0x07;
data[30] = (byte) 0xD0;
}
// Constant Data
data[31] = (byte) 0xFF;
data[32] = (byte) 0xFF;
os.write(data);
}
/**
* Sets the orientation which specifies the amount of clockwise rotation of
* the IM image object area.
*
* @param orientation
* The orientation to set.
*/
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");
}
}
/**
* Sets the singlepoint, if true map an image point to a single presentation
* device pel in the IM image object area. If false map an image point to
* two presentation device pels in the IM image object area (double-dot)
*
* @param singlepoint
* Use the singlepoint basis when true.
*/
public void setSinglepoint(boolean singlepoint) {
singlePoint = singlepoint;
}
}