/// <summary>
/// Generates an escher record including the any children contained under that record.
/// An exception is thrown if the record could not be generated.
/// </summary>
/// <param name="data">The byte array containing the records</param>
/// <param name="offset">The starting offset into the byte array</param>
/// <returns>The generated escher record</returns>
public virtual EscherRecord CreateRecord(byte[] data, int offset)
{
EscherRecord.EscherRecordHeader header = EscherRecord.EscherRecordHeader.ReadHeader(data, offset);
// Options of 0x000F means container record
// However, EscherTextboxRecord are containers of records for the
// host application, not of other Escher records, so treat them
// differently
if ((header.Options & (short)0x000F) == (short)0x000F &&
header.RecordId != EscherTextboxRecord.RECORD_ID)
{
EscherContainerRecord r = new EscherContainerRecord();
r.RecordId = header.RecordId;
r.Options = header.Options;
return(r);
}
if (header.RecordId >= EscherBlipRecord.RECORD_ID_START && header.RecordId <= EscherBlipRecord.RECORD_ID_END)
{
EscherBlipRecord r;
if (header.RecordId == EscherBitmapBlip.RECORD_ID_DIB ||
header.RecordId == EscherBitmapBlip.RECORD_ID_JPEG ||
header.RecordId == EscherBitmapBlip.RECORD_ID_PNG)
{
r = new EscherBitmapBlip();
}
else if (header.RecordId == EscherMetafileBlip.RECORD_ID_EMF ||
header.RecordId == EscherMetafileBlip.RECORD_ID_WMF ||
header.RecordId == EscherMetafileBlip.RECORD_ID_PICT)
{
r = new EscherMetafileBlip();
}
else
{
r = new EscherBlipRecord();
}
r.RecordId = header.RecordId;
r.Options = header.Options;
return(r);
}
//ConstructorInfo recordConstructor = (ConstructorInfo) recordsMap[header.RecordId];
ConstructorInfo recordConstructor = null;
if (recordsMap.ContainsKey(header.RecordId))
{
recordConstructor = recordsMap[header.RecordId];
}
EscherRecord escherRecord = null;
if (recordConstructor == null)
{
return(new UnknownEscherRecord());
}
try
{
escherRecord = (EscherRecord)recordConstructor.Invoke(new object[] { });
//escherRecord = (EscherRecord)Activator.CreateInstance(recordConstructor);
}
catch (Exception)
{
return(new UnknownEscherRecord());
}
escherRecord.RecordId = header.RecordId;
escherRecord.Options = header.Options;
return(escherRecord);
}
/// <summary>
/// Generates an escher record including the any children contained under that record.
/// An exception is thrown if the record could not be generated.
/// </summary>
/// <param name="data">The byte array containing the records</param>
/// <param name="offset">The starting offset into the byte array</param>
/// <returns>The generated escher record</returns>
public virtual EscherRecord CreateRecord(byte[] data, int offset)
{
EscherRecord.EscherRecordHeader header = EscherRecord.EscherRecordHeader.ReadHeader(data, offset);
// Options of 0x000F means container record
// However, EscherTextboxRecord are containers of records for the
// host application, not of other Escher records, so treat them
// differently
if ((header.Options & (short)0x000F) == (short)0x000F
&& header.RecordId != EscherTextboxRecord.RECORD_ID)
{
EscherContainerRecord r = new EscherContainerRecord();
r.RecordId = header.RecordId;
r.Options = header.Options;
return r;
}
if (header.RecordId >= EscherBlipRecord.RECORD_ID_START && header.RecordId <= EscherBlipRecord.RECORD_ID_END)
{
EscherBlipRecord r;
if (header.RecordId == EscherBitmapBlip.RECORD_ID_DIB ||
header.RecordId == EscherBitmapBlip.RECORD_ID_JPEG ||
header.RecordId == EscherBitmapBlip.RECORD_ID_PNG)
{
r = new EscherBitmapBlip();
}
else if (header.RecordId == EscherMetafileBlip.RECORD_ID_EMF ||
header.RecordId == EscherMetafileBlip.RECORD_ID_WMF ||
header.RecordId == EscherMetafileBlip.RECORD_ID_PICT)
{
r = new EscherMetafileBlip();
}
else
{
r = new EscherBlipRecord();
}
r.RecordId = header.RecordId;
r.Options = header.Options;
return r;
}
//ConstructorInfo recordConstructor = (ConstructorInfo) recordsMap[header.RecordId];
ConstructorInfo recordConstructor = null;
if (recordsMap.ContainsKey(header.RecordId))
recordConstructor = recordsMap[header.RecordId];
EscherRecord escherRecord = null;
if (recordConstructor == null)
{
return new UnknownEscherRecord();
}
try
{
escherRecord = (EscherRecord)recordConstructor.Invoke(new object[] { });
//escherRecord = (EscherRecord)Activator.CreateInstance(recordConstructor);
}
catch (Exception)
{
return new UnknownEscherRecord();
}
escherRecord.RecordId = header.RecordId;
escherRecord.Options = header.Options;
return escherRecord;
}
