//
// overrides
//
#region BeginObject(string name)
/// <summary>
/// Overrides the default implementation to push state of encryption data onto a stack before returning the base implementations object
/// </summary>
/// <param name="name"></param>
/// <returns></returns>
public override PDFObjectRef BeginObject(string name)
{
PDFObjectRef oref = base.BeginObject(name);
PDFObjectEncryptionStream enc = new PDFObjectEncryptionStream(oref);
_encrypters.Push(enc);
return(oref);
}
/// <summary>
/// Overrides the base implementation to write strings that are encrypted if they are not a part of an object stream
/// </summary>
/// <param name="value"></param>
/// <param name="encoding"></param>
public override void WriteStringLiteral(string value, Scryber.FontEncoding encoding)
{
PDFObjectEncryptionStream encrypting = this.AssertEncrypterStream;
if (encrypting.InsideStream == false)
{
//If we are not in an object stream, then we want to encrypt the text
if (encrypting.HasEncrypter == false)
{
encrypting.Encrypter = this.CreateEncryptionFilter(encrypting.ObjectRef);
}
byte[] all = GetStringBytes(value, encoding);
all = encrypting.Encrypter.FilterStream(all);
this.WriteStringHex(all);
}
else
{
//We are in an object stream so don't do any encryption now - wait until we close the indirect object
base.WriteStringLiteral(value, encoding);
}
}