////////////////////////////////////////////////////////////////////
// Write stream object to PDF file
// Called by PdfDocument.CreateFile(FileName) method
// to output one indirect stream PDF object.
////////////////////////////////////////////////////////////////////
internal void WriteToPdfFile()
{
// already done or not in file object
if (FilePosition != 0 || XRefType != XRefObjType.InFile)
{
return;
}
// save file position for this object
FilePosition = Document.PdfFile.BaseStream.Position;
// write object header
Document.PdfFile.WriteFormat("{0} 0 obj\n", ObjectNumber);
// stream object
if (ObjectType == ObjectType.Stream)
{
// convert byte list to array
if (ObjectValueList.Count > 0)
{
ObjectValueArray = ObjectValueList.ToArray();
}
// object value is empty
if (ObjectValueArray == null)
{
ObjectValueArray = new byte[0];
}
// compress the stream and update dictionary if successful
if (!NoCompression && PdfDocument.CompressStream(ref ObjectValueArray))
{
Dictionary.Add("/Filter", "/FlateDecode");
}
// encryption
if (Document.Encryption != null)
{
ObjectValueArray = Document.Encryption.EncryptByteArray(ObjectNumber, ObjectValueArray);
}
// stream length
Dictionary.AddInteger("/Length", ObjectValueArray.Length);
// write dictionary
Document.PdfFile.Write(Dictionary.ToByteArray());
// write stream reserved word
Document.PdfFile.WriteString("stream\n");
// write content to pdf file
Document.PdfFile.Write(ObjectValueArray);
// write end of stream
Document.PdfFile.WriteString("\nendstream\nendobj\n");
}
else
{
// write dictionary
Document.PdfFile.Write(Dictionary.ToByteArray());
// write end of object
Document.PdfFile.WriteString("\nendobj\n");
}
// this indirect object was written to output file
// tell the garbage collector that these objects are not used any more
Dictionary = null;
ObjectValueList = null;
ObjectValueArray = null;
return;
}