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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.goca;
import java.io.UnsupportedEncodingException;
import org.apache.fop.render.afp.modca.AFPConstants;
import org.apache.fop.render.afp.modca.AbstractPreparedAFPObject;
import org.apache.fop.render.afp.modca.GraphicsObject;
import org.apache.fop.render.afp.tools.BinaryUtils;
/**
* A GOCA graphics string
*/
public class GraphicsString extends AbstractPreparedAFPObject {
/** Up to 255 bytes of character data */
private static final int MAX_STR_LEN = 255;
/** drawn from the current position */
private boolean fromCurrentPosition = false;
/** the string to draw */
private String str = null;
/** x coordinate */
private int x;
/** y coordinate */
private int y;
/**
* @param str the character string
*/
public GraphicsString(String str) {
this.str = str;
fromCurrentPosition = true;
prepareData();
}
/**
* @param str the character string
* @param x the x coordinate
* @param y the y coordinate
*/
public GraphicsString(String str, int x, int y) {
this.str = str;
this.x = x;
this.y = y;
prepareData();
}
/**
* {@inheritDoc}
*/
protected void prepareData() {
int maxStrLen = MAX_STR_LEN - (fromCurrentPosition ? 0 : 4);
if (str.length() > maxStrLen) {
str = str.substring(0, maxStrLen);
log.warn("truncated character string, longer than " + maxStrLen + " chars");
}
byte[] strData = null;
try {
strData = str.getBytes(AFPConstants.EBCIDIC_ENCODING);
} catch (UnsupportedEncodingException ex) {
GraphicsObject.log.error("unsupported encoding: " + ex.getMessage());
}
int len = strData.length;
if (fromCurrentPosition) {
data = new byte[len + 2];
data[0] = (byte)0x83;
data[1] = (byte)len;
System.arraycopy(strData, 0, data, 2, strData.length);
} else {
len += 4; // x/y coordinates
byte[] osx = BinaryUtils.convert(x, 2);
byte[] osy = BinaryUtils.convert(y, 2);
data = new byte[len + 2];
data[0] = (byte)0xC3;
data[1] = (byte)len;
data[2] = osx[0];
data[3] = osx[1];
data[4] = osy[0];
data[5] = osy[1];
System.arraycopy(strData, 0, data, 6, strData.length);
}
}
/**
* {@inheritDoc}
*/
public String toString() {
String string = "GraphicsString(str='" + str + "'";
if (!fromCurrentPosition) {
string += ",x=" + x + ",y=" + y;
}
string += ")";
return string;
}
}
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