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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.goca;
-
- import java.io.IOException;
- import java.io.OutputStream;
-
- import org.apache.fop.afp.util.BinaryUtils;
-
- /**
- * A GOCA graphics segment
- */
- public final class GraphicsChainedSegment extends AbstractGraphicsDrawingOrderContainer {
-
- /** The maximum segment data length */
- protected static final int MAX_DATA_LEN = 8192;
-
- private byte[] predecessorNameBytes;
-
- /**
- * Main constructor
- *
- * @param name
- * the name of this graphics segment
- */
- public GraphicsChainedSegment(String name) {
- super(name);
- }
-
- /**
- * Constructor
- *
- * @param name
- * the name of this graphics segment
- * @param predecessorNameBytes
- * the name of the predecessor in this chain
- */
- public GraphicsChainedSegment(String name, byte[] predecessorNameBytes) {
- super(name);
- this.predecessorNameBytes = predecessorNameBytes;
- }
-
- /** {@inheritDoc} */
- public int getDataLength() {
- return 14 + super.getDataLength();
- }
-
- private static final byte APPEND_NEW_SEGMENT = 0;
- // private static final byte PROLOG = 4;
- // private static final byte APPEND_TO_EXISING = 48;
-
- private static final int NAME_LENGTH = 4;
-
- /** {@inheritDoc} */
- protected int getNameLength() {
- return NAME_LENGTH;
- }
-
- /** {@inheritDoc} */
- byte getOrderCode() {
- return 0x70;
- }
-
- /** {@inheritDoc} */
- public void writeToStream(OutputStream os) throws IOException {
- byte[] data = new byte[14];
- data[0] = getOrderCode(); // BEGIN_SEGMENT
- data[1] = 0x0C; // Length of following parameters
-
- // segment name
- byte[] nameBytes = getNameBytes();
- System.arraycopy(nameBytes, 0, data, 2, NAME_LENGTH);
-
- data[6] = 0x00; // FLAG1 (ignored)
- data[7] = APPEND_NEW_SEGMENT;
-
- int dataLength = super.getDataLength();
- byte[] len = BinaryUtils.convert(dataLength, 2);
- data[8] = len[0]; // SEGL
- data[9] = len[1];
-
- // P/S NAME (predecessor name)
- if (predecessorNameBytes != null) {
- System.arraycopy(predecessorNameBytes, 0, data, 10, NAME_LENGTH);
- }
- os.write(data);
-
- writeObjects(objects, os);
- }
-
- /** {@inheritDoc} */
- public String toString() {
- return "GraphicsChainedSegment(name=" + super.getName() + ")";
- }
- }
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