/// <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)
{
short options = LittleEndian.GetShort(data, offset);
short recordId = LittleEndian.GetShort(data, offset + 2);
// int remainingBytes = LittleEndian.getInt( data, offset + 4 );
// 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 (IsContainer(options, recordId))
{
EscherContainerRecord r = new EscherContainerRecord();
r.RecordId = recordId;
r.Options = options;
return r;
}
if (recordId >= EscherBlipRecord.RECORD_ID_START && recordId <= EscherBlipRecord.RECORD_ID_END)
{
EscherBlipRecord r;
if (recordId == EscherBitmapBlip.RECORD_ID_DIB ||
recordId == EscherBitmapBlip.RECORD_ID_JPEG ||
recordId == EscherBitmapBlip.RECORD_ID_PNG)
{
r = new EscherBitmapBlip();
}
else if (recordId == EscherMetafileBlip.RECORD_ID_EMF ||
recordId == EscherMetafileBlip.RECORD_ID_WMF ||
recordId == EscherMetafileBlip.RECORD_ID_PICT)
{
r = new EscherMetafileBlip();
}
else
{
r = new EscherBlipRecord();
}
r.RecordId = recordId;
r.Options = options;
return r;
}
//ConstructorInfo recordConstructor = (ConstructorInfo) recordsMap[header.RecordId];
ConstructorInfo recordConstructor = null;
if (recordsMap.ContainsKey(recordId))
recordConstructor = recordsMap[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 = recordId;
escherRecord.Options = options;
return escherRecord;
}
/// <summary>
/// Adds a picture to the workbook.
/// </summary>
/// <param name="pictureData">The bytes of the picture</param>
/// <param name="format">The format of the picture. One of
/// PictureType.</param>
/// <returns>the index to this picture (1 based).</returns>
public int AddPicture(byte[] pictureData, NPOI.SS.UserModel.PictureType format)
{
InitDrawings();
byte[] uid;
using (MD5 hasher = MD5.Create())
{
uid = hasher.ComputeHash(pictureData);
}
EscherBlipRecord blipRecord;
int blipSize;
short escherTag;
switch (format) {
case PictureType.WMF:
// remove first 22 bytes if file starts with magic bytes D7-CD-C6-9A
// see also http://de.wikipedia.org/wiki/Windows_Metafile#Hinweise_zur_WMF-Spezifikation
if (LittleEndian.GetInt(pictureData) == unchecked((int)0x9AC6CDD7)) {
byte[] picDataNoHeader = new byte[pictureData.Length-22];
Array.Copy(pictureData, 22, picDataNoHeader, 0, pictureData.Length-22);
pictureData = picDataNoHeader;
}
EscherMetafileBlip blipRecordMeta = new EscherMetafileBlip();
blipRecord = blipRecordMeta;
blipRecordMeta.UID=(/*setter*/uid);
blipRecordMeta.SetPictureData(pictureData);
// taken from libre office export, it won't open, if this is left to 0
blipRecordMeta.Filter=(/*setter*/unchecked((byte)-2));
blipSize = blipRecordMeta.CompressedSize + 58;
escherTag = 0;
break;
case PictureType.EMF:
blipRecordMeta = new EscherMetafileBlip();
blipRecord = blipRecordMeta;
blipRecordMeta.UID=(/*setter*/uid);
blipRecordMeta.SetPictureData(pictureData);
// taken from libre office export, it won't open, if this is left to 0
blipRecordMeta.Filter=(/*setter*/unchecked((byte)-2));
blipSize = blipRecordMeta.CompressedSize + 58;
escherTag = 0;
break;
default:
EscherBitmapBlip blipRecordBitmap = new EscherBitmapBlip();
blipRecord = blipRecordBitmap;
blipRecordBitmap.UID=(/*setter*/ uid );
blipRecordBitmap.Marker=(/*setter*/ (byte) 0xFF );
blipRecordBitmap.PictureData=(pictureData);
blipSize = pictureData.Length + 25;
escherTag = (short) 0xFF;
break;
}
blipRecord.RecordId = (short)(EscherBitmapBlip.RECORD_ID_START + format);
switch (format)
{
case NPOI.SS.UserModel.PictureType.EMF:
blipRecord.Options = HSSFPictureData.MSOBI_EMF;
break;
case NPOI.SS.UserModel.PictureType.WMF:
blipRecord.Options = HSSFPictureData.MSOBI_WMF;
break;
case NPOI.SS.UserModel.PictureType.PICT:
blipRecord.Options = HSSFPictureData.MSOBI_PICT;
break;
case NPOI.SS.UserModel.PictureType.PNG:
blipRecord.Options = HSSFPictureData.MSOBI_PNG;
break;
case NPOI.SS.UserModel.PictureType.JPEG:
blipRecord.Options = HSSFPictureData.MSOBI_JPEG;
break;
case NPOI.SS.UserModel.PictureType.DIB:
blipRecord.Options = HSSFPictureData.MSOBI_DIB;
break;
}
EscherBSERecord r = new EscherBSERecord();
r.RecordId = EscherBSERecord.RECORD_ID;
r.Options = (short)(0x0002 | ((int)format << 4));
r.BlipTypeMacOS = (byte)format;
r.BlipTypeWin32 = (byte)format;
r.UID = uid;
r.Tag = (short)0xFF;
r.Size = pictureData.Length + 25;
r.Ref = 0;
r.Offset = 0;
r.BlipRecord = blipRecord;
return workbook.AddBSERecord(r);
}
/// <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);
}
else 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);
}
else
{
//ConstructorInfo recordConstructor = (ConstructorInfo) recordsMap[header.RecordId];
Type record = (Type)recordsMap[header.RecordId];
EscherRecord escherRecord = null;
//if ( recordConstructor != null )
if (record != null)
{
try
{
escherRecord = (EscherRecord)Activator.CreateInstance(record);
escherRecord.RecordId = header.RecordId;
escherRecord.Options = header.Options;
}
catch (Exception)
{
escherRecord = null;
}
}
return(escherRecord == null ? new UnknownEscherRecord() : 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)
{
short options = LittleEndian.GetShort(data, offset);
short recordId = LittleEndian.GetShort(data, offset + 2);
// int remainingBytes = LittleEndian.getInt( data, offset + 4 );
// 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 (IsContainer(options, recordId))
{
EscherContainerRecord r = new EscherContainerRecord();
r.RecordId = recordId;
r.Options = options;
return r;
}
if (recordId >= EscherBlipRecord.RECORD_ID_START && recordId <= EscherBlipRecord.RECORD_ID_END)
{
EscherBlipRecord r;
if (recordId == EscherBitmapBlip.RECORD_ID_DIB ||
recordId == EscherBitmapBlip.RECORD_ID_JPEG ||
recordId == EscherBitmapBlip.RECORD_ID_PNG)
{
r = new EscherBitmapBlip();
}
else if (recordId == EscherMetafileBlip.RECORD_ID_EMF ||
recordId == EscherMetafileBlip.RECORD_ID_WMF ||
recordId == EscherMetafileBlip.RECORD_ID_PICT)
{
r = new EscherMetafileBlip();
}
else
{
r = new EscherBlipRecord();
}
r.RecordId = recordId;
r.Options = options;
return r;
}
//ConstructorInfo recordConstructor = (ConstructorInfo) recordsMap[header.RecordId];
ConstructorInfo recordConstructor = null;
if (recordsMap.ContainsKey(recordId))
recordConstructor = recordsMap[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 = recordId;
escherRecord.Options = 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;
}
else 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;
}
else
{
//ConstructorInfo recordConstructor = (ConstructorInfo) recordsMap[header.RecordId];
Type record = (Type)recordsMap[header.RecordId];
EscherRecord escherRecord = null;
//if ( recordConstructor != null )
if (record != null)
{
try
{
escherRecord = (EscherRecord)Activator.CreateInstance(record);
escherRecord.RecordId = header.RecordId;
escherRecord.Options = header.Options;
}
catch (Exception)
{
escherRecord = null;
}
}
return escherRecord == null ? new UnknownEscherRecord() : escherRecord;
}
}
