/**
* @return the next available record, or <code>null</code> if
* this pass didn't return a record that's
* suitable for returning (eg was a continue record).
*/
private Record ReadNextRecord()
{
Record record = RecordFactory.CreateSingleRecord(_recStream);
_lastRecordWasEOFLevelZero = false;
if (record is BOFRecord)
{
_bofDepth++;
return(record);
}
if (record is EOFRecord)
{
_bofDepth--;
if (_bofDepth < 1)
{
_lastRecordWasEOFLevelZero = true;
}
return(record);
}
if (record is DBCellRecord)
{
// Not needed by POI. Regenerated from scratch by POI when spreadsheet is written
return(null);
}
if (record is RKRecord)
{
return(RecordFactory.ConvertToNumberRecord((RKRecord)record));
}
if (record is MulRKRecord)
{
Record[] records = RecordFactory.ConvertRKRecords((MulRKRecord)record);
_unreadRecordBuffer = records;
_unreadRecordIndex = 1;
return(records[0]);
}
if (record.Sid == DrawingGroupRecord.sid &&
_lastRecord is DrawingGroupRecord)
{
DrawingGroupRecord lastDGRecord = (DrawingGroupRecord)_lastRecord;
lastDGRecord.Join((AbstractEscherHolderRecord)record);
return(null);
}
if (record.Sid == ContinueRecord.sid)
{
ContinueRecord contRec = (ContinueRecord)record;
if (_lastRecord is ObjRecord || _lastRecord is TextObjectRecord)
{
// Drawing records have a very strange continue behaviour.
//There can actually be OBJ records mixed between the continues.
_lastDrawingRecord.ProcessContinueRecord(contRec.Data);
//we must remember the position of the continue record.
//in the serialization procedure the original structure of records must be preserved
if (_shouldIncludeContinueRecords)
{
return(record);
}
return(null);
}
if (_lastRecord is DrawingGroupRecord)
{
((DrawingGroupRecord)_lastRecord).ProcessContinueRecord(contRec.Data);
return(null);
}
if (_lastRecord is DrawingRecord)
{
((DrawingRecord)_lastRecord).ProcessContinueRecord(contRec.Data);
return(null);
}
if (_lastRecord is UnknownRecord)
{
//Gracefully handle records that we don't know about,
//that happen to be continued
return(record);
}
if (_lastRecord is EOFRecord)
{
// This is really odd, but excel still sometimes
// outPuts a file like this all the same
return(record);
}
//if (_lastRecord is StringRecord)
//{
// ((StringRecord)_lastRecord).ProcessContinueRecord(contRec.Data);
// return null;
//}
throw new RecordFormatException("Unhandled Continue Record");
}
_lastRecord = record;
if (record is DrawingRecord)
{
_lastDrawingRecord = (DrawingRecord)record;
}
return(record);
}
/**
* Creates a primary drawing Group record. If it already
* exists then it's modified.
*/
public void CreateDrawingGroup()
{
if (drawingManager == null)
{
EscherContainerRecord dggContainer = new EscherContainerRecord();
EscherDggRecord dgg = new EscherDggRecord();
EscherOptRecord opt = new EscherOptRecord();
EscherSplitMenuColorsRecord splitMenuColors = new EscherSplitMenuColorsRecord();
dggContainer.RecordId=unchecked((short)0xF000);
dggContainer.Options=(short)0x000F;
dgg.RecordId=EscherDggRecord.RECORD_ID;
dgg.Options=(short)0x0000;
dgg.ShapeIdMax=1024;
dgg.NumShapesSaved=0;
dgg.DrawingsSaved=0;
dgg.FileIdClusters=new EscherDggRecord.FileIdCluster[] { };
drawingManager = new DrawingManager2(dgg);
EscherContainerRecord bstoreContainer = null;
if (escherBSERecords.Count > 0)
{
bstoreContainer = new EscherContainerRecord();
bstoreContainer.RecordId=EscherContainerRecord.BSTORE_CONTAINER;
bstoreContainer.Options=(short)((escherBSERecords.Count << 4) | 0xF);
for (IEnumerator iterator = escherBSERecords.GetEnumerator(); iterator.MoveNext(); )
{
EscherRecord escherRecord = (EscherRecord)iterator.Current;
bstoreContainer.AddChildRecord(escherRecord);
}
}
opt.RecordId=unchecked((short)0xF00B);
opt.Options=(short)0x0033;
opt.AddEscherProperty(new EscherBoolProperty(EscherProperties.TEXT__SIZE_TEXT_TO_FIT_SHAPE, 524296));
opt.AddEscherProperty(new EscherRGBProperty(EscherProperties.Fill__FillCOLOR, 0x08000041));
opt.AddEscherProperty(new EscherRGBProperty(EscherProperties.LINESTYLE__COLOR, 134217792));
splitMenuColors.RecordId=unchecked((short)0xF11E);
splitMenuColors.Options=(short)0x0040;
splitMenuColors.Color1=0x0800000D;
splitMenuColors.Color2=0x0800000C;
splitMenuColors.Color3=0x08000017;
splitMenuColors.Color4=0x100000F7;
dggContainer.AddChildRecord(dgg);
if (bstoreContainer != null)
dggContainer.AddChildRecord(bstoreContainer);
dggContainer.AddChildRecord(opt);
dggContainer.AddChildRecord(splitMenuColors);
int dgLoc = FindFirstRecordLocBySid(DrawingGroupRecord.sid);
if (dgLoc == -1)
{
DrawingGroupRecord drawingGroup = new DrawingGroupRecord();
drawingGroup.AddEscherRecord(dggContainer);
int loc = FindFirstRecordLocBySid(CountryRecord.sid);
Records.Insert(loc + 1, drawingGroup);
}
else
{
DrawingGroupRecord drawingGroup = new DrawingGroupRecord();
drawingGroup.AddEscherRecord(dggContainer);
Records[dgLoc]= drawingGroup;
}
}
}