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/* ====================================================================
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Licensed to the Apache Software Foundation (ASF) under one or more
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contributor license agreements. See the NOTICE file distributed with
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this work for Additional information regarding copyright ownership.
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The ASF licenses this file to You under the Apache License, Version 2.0
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(the "License"); you may not use this file except in compliance with
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the License. You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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==================================================================== */
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namespace HH.WMS.Utils.NPOI.DDF
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{
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using System;
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using System.Text;
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using System.Collections;
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using HH.WMS.Utils.NPOI.Util;
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using System.IO;
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/// <summary>
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/// @author Glen Stampoultzis
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/// @version $Id: EscherBlipRecord.java 569827 2007-08-26 15:26:29Z yegor $
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/// </summary>
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public class EscherBlipRecord : EscherRecord
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{
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public const short RECORD_ID_START = unchecked((short)0xF018);
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public const short RECORD_ID_END = unchecked((short)0xF117);
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public const String RECORD_DESCRIPTION = "msofbtBlip";
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private const int HEADER_SIZE = 8;
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protected byte[] field_pictureData;
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public EscherBlipRecord()
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{
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}
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/// <summary>
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/// This method deSerializes the record from a byte array.
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/// </summary>
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/// <param name="data">The byte array containing the escher record information</param>
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/// <param name="offset">The starting offset into </param>
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/// <param name="recordFactory">May be null since this is not a container record.</param>
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/// <returns>The number of bytes Read from the byte array.</returns>
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public override int FillFields(byte[] data, int offset, EscherRecordFactory recordFactory)
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{
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int bytesAfterHeader = ReadHeader(data, offset);
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int pos = offset + HEADER_SIZE;
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field_pictureData = new byte[bytesAfterHeader];
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Array.Copy(data, pos, field_pictureData, 0, bytesAfterHeader);
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return bytesAfterHeader + 8;
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}
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/// <summary>
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/// Serializes the record to an existing byte array.
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/// </summary>
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/// <param name="offset"> the offset within the byte array</param>
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/// <param name="data">the data array to Serialize to</param>
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/// <param name="listener">a listener for begin and end serialization events.</param>
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/// <returns>the number of bytes written.</returns>
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public override int Serialize(int offset, byte[] data, EscherSerializationListener listener)
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{
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listener.BeforeRecordSerialize(offset, RecordId, this);
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LittleEndian.PutShort(data, offset, Options);
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LittleEndian.PutShort(data, offset + 2, RecordId);
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Array.Copy(field_pictureData, 0, data, offset + 4, field_pictureData.Length);
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listener.AfterRecordSerialize(offset + 4 + field_pictureData.Length, RecordId, field_pictureData.Length + 4, this);
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return field_pictureData.Length + 4;
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}
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/// <summary>
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/// Returns the number of bytes that are required to Serialize this record.
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/// </summary>
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/// <value>Number of bytes</value>
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public override int RecordSize
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{
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get { return field_pictureData.Length + HEADER_SIZE; }
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}
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/// <summary>
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/// The short name for this record
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/// </summary>
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/// <value></value>
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public override String RecordName
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{
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get { return "Blip"; }
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}
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/// <summary>
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/// Gets or sets the picture data.
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/// </summary>
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/// <value>The picture data.</value>
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public byte[] PictureData
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{
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get { return field_pictureData; }
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set { field_pictureData = value; }
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}
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/// <summary>
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/// Returns a <see cref="T:System.String"/> that represents the current <see cref="T:System.Object"/>.
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/// </summary>
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/// <returns>
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/// A <see cref="T:System.String"/> that represents the current <see cref="T:System.Object"/>.
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/// </returns>
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public override String ToString()
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{
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String nl = Environment.NewLine;
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String extraData;
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using (MemoryStream b = new MemoryStream())
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{
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try
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{
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HexDump.Dump(this.field_pictureData, 0, b, 0);
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extraData = b.ToString();
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}
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catch (Exception e)
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{
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extraData = e.ToString();
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}
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return this.GetType().Name + ":" + nl +
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" RecordId: 0x" + HexDump.ToHex(RecordId) + nl +
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" Options: 0x" + HexDump.ToHex(Options) + nl;
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//" Extra Data:" + nl + extraData;
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}
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}
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}
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}
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