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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.goca;
-
- import java.io.UnsupportedEncodingException;
-
- import org.apache.fop.render.afp.modca.AFPConstants;
- 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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