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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.Collections;
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using HH.WMS.Utils.NPOI.Util;
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using System.Collections.Generic;
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/// <summary>
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/// Generates a property given a reference into the byte array storing that property.
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/// @author Glen Stampoultzis
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/// </summary>
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public class EscherPropertyFactory
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{
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/// <summary>
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/// Create new properties from a byte array.
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/// </summary>
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/// <param name="data">The byte array containing the property</param>
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/// <param name="offset">The starting offset into the byte array</param>
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/// <param name="numProperties">The new properties</param>
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/// <returns></returns>
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public List<EscherProperty> CreateProperties(byte[] data, int offset, short numProperties)
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{
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List<EscherProperty> results = new List<EscherProperty>();
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int pos = offset;
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// while ( bytesRemaining >= 6 )
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for (int i = 0; i < numProperties; i++)
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{
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short propId;
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int propData;
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propId = LittleEndian.GetShort(data, pos);
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propData = LittleEndian.GetInt(data, pos + 2);
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short propNumber = (short)(propId & (short)0x3FFF);
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bool isComplex = (propId & unchecked((short)0x8000)) != 0;
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bool isBlipId = (propId & (short)0x4000) != 0;
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byte propertyType = EscherProperties.GetPropertyType((short)propNumber);
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if (propertyType == EscherPropertyMetaData.TYPE_bool)
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results.Add(new EscherBoolProperty(propId, propData));
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else if (propertyType == EscherPropertyMetaData.TYPE_RGB)
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results.Add(new EscherRGBProperty(propId, propData));
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else if (propertyType == EscherPropertyMetaData.TYPE_SHAPEPATH)
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results.Add(new EscherShapePathProperty(propId, propData));
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else
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{
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if (!isComplex)
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results.Add(new EscherSimpleProperty(propId, propData));
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else
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{
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if (propertyType == EscherPropertyMetaData.TYPE_ARRAY)
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results.Add(new EscherArrayProperty(propId, new byte[propData]));
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else
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results.Add(new EscherComplexProperty(propId, new byte[propData]));
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}
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}
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pos += 6;
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// bytesRemaining -= 6 + complexBytes;
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}
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// Get complex data
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for (IEnumerator iterator = results.GetEnumerator(); iterator.MoveNext(); )
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{
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EscherProperty p = (EscherProperty)iterator.Current;
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if (p is EscherComplexProperty)
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{
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if (p is EscherArrayProperty)
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{
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pos += ((EscherArrayProperty)p).SetArrayData(data, pos);
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}
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else
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{
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byte[] complexData = ((EscherComplexProperty)p).ComplexData;
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Array.Copy(data, pos, complexData, 0, complexData.Length);
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pos += complexData.Length;
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}
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}
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}
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return results;
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}
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}
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}
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