private static void Saven2(TPdfStream DataStream, TXRefSection XRef, TPdfVisibleSignature VSig, int n2Id)
{
string s = String.Format(CultureInfo.InvariantCulture, "{0} {1} {2} {3} {4} {5} cm ",
VSig.Rect.Width,
0, 0,
VSig.Rect.Height,
0, 0);
string StreamContents = "q " + s + TPdfTokens.GetString(TPdfToken.ImgPrefix) + "0 Do Q";
XRef.SetObjectOffset(n2Id, DataStream);
TIndirectRecord.SaveHeader(DataStream, n2Id);
BeginDictionary(DataStream);
WriteCommonXObject(DataStream, VSig.Rect, StreamContents);
TPdfResources Resources = new TPdfResources(null, false, null);
using (MemoryStream ImgStream = new MemoryStream(VSig.ImageData))
{
Resources.AddImage(null, ImgStream, FlxConsts.NoTransparentColor, false);
}
SaveProcSet(DataStream, XRef, true);
SaveResourcesImgXObject(DataStream, XRef, Resources);
EndDictionary(DataStream);
WriteStream(DataStream, StreamContents);
TIndirectRecord.SaveTrailer(DataStream);
Resources.SaveObjects(DataStream, XRef);
}
private static void Saven0(TPdfStream DataStream, TXRefSection XRef, TPdfVisibleSignature VSig, int n0Id)
{
string StreamContents = "% DSBlank";
XRef.SetObjectOffset(n0Id, DataStream);
TIndirectRecord.SaveHeader(DataStream, n0Id);
BeginDictionary(DataStream);
WriteCommonXObject(DataStream, new RectangleF(0, 0, 100, 100), StreamContents);
SaveProcSet(DataStream, XRef, false);
EndDictionary(DataStream);
EndDictionary(DataStream);
WriteStream(DataStream, StreamContents);
TIndirectRecord.SaveTrailer(DataStream);
}
internal override void SaveToStream(TPdfStream DataStream, TXRefSection XRef, TPageInfo ParentPage)
{
BeginSaveToStream(DataStream, XRef);
//Annot
SaveKey(DataStream, TPdfToken.TypeName, TPdfTokens.GetString(TPdfToken.AnnotName)); //Annots and Fields mix their dictionaries. See "Digital Signature Appearances" to see why annots are required even in non visible sigs.
SaveKey(DataStream, TPdfToken.SubtypeName, TPdfTokens.GetString(TPdfToken.WidgetName));
RectangleF Rect = new RectangleF(0, 0, 0, 0);
TPdfVisibleSignature VSig = Signature as TPdfVisibleSignature;
int APId = -1;
if (VSig != null)
{
Rect = VSig.Rect;
APId = SaveAPRef(DataStream, XRef);
}
SaveKey(DataStream, TPdfToken.RectName,
TPdfTokens.GetString(TPdfToken.OpenArray) +
String.Format(CultureInfo.InvariantCulture, "{0} {1} {2} {3}", Rect.Left, Rect.Top, Rect.Right, Rect.Bottom) +
TPdfTokens.GetString(TPdfToken.CloseArray)
);
SaveKey(DataStream, TPdfToken.PName, TIndirectRecord.GetCallObj(ParentPage.Id));
SaveKey(DataStream, TPdfToken.FName, 132); //bits 3 and 8
//Field
SaveKey(DataStream, TPdfToken.FTName, TPdfTokens.GetString(TPdfToken.SigName));
if (Signature.Name != null)
{
SaveUnicodeKey(DataStream, TPdfToken.TName, Signature.Name);
}
SaveKey(DataStream, TPdfToken.FfName, 1);
XRef.SetObjectOffset(GetSigDictionaryId(DataStream, XRef), DataStream);
SaveKey(DataStream, TPdfToken.VName, TIndirectRecord.GetCallObj(SigDictionaryId));
EndSaveToStream(DataStream, XRef);
if (VSig != null)
{
SaveAPObj(DataStream, XRef, APId, VSig);
}
SaveSigDictionary(DataStream, XRef, SigDictionaryId);
}
internal static int GetSignaturePage(TPdfSignature Signature, int PageCount)
{
int Result = 0;
TPdfVisibleSignature VSig = Signature as TPdfVisibleSignature;
if (VSig != null)
{
Result = VSig.Page - 1;
}
if (Result < 0 || Result >= PageCount)
{
Result = PageCount - 1;
}
return(Result);
}
private static void SaveFRM(TPdfStream DataStream, TXRefSection XRef, TPdfVisibleSignature VSig, int FRMId)
{
string StreamContents = "q 1 0 0 1 0 0 cm /n0 Do Q" + TPdfTokens.NewLine + "q 1 0 0 1 0 0 cm /n2 Do Q";
XRef.SetObjectOffset(FRMId, DataStream);
TIndirectRecord.SaveHeader(DataStream, FRMId);
BeginDictionary(DataStream);
WriteCommonXObject(DataStream, VSig.Rect, StreamContents);
int n0Id = XRef.GetNewObject(DataStream);
int n2Id = XRef.GetNewObject(DataStream);
SaveProcSet(DataStream, XRef, false);
SaveResourcesSecondXObject(DataStream, n0Id, n2Id);
EndDictionary(DataStream);
WriteStream(DataStream, StreamContents);
TIndirectRecord.SaveTrailer(DataStream);
Saven0(DataStream, XRef, VSig, n0Id);
Saven2(DataStream, XRef, VSig, n2Id);
}
private static void SaveAPObj(TPdfStream DataStream, TXRefSection XRef, int APId, TPdfVisibleSignature VSig)
{
string StreamContents = "q 1 0 0 1 0 0 cm /FRM Do Q";
//AP Object
XRef.SetObjectOffset(APId, DataStream);
TIndirectRecord.SaveHeader(DataStream, APId);
BeginDictionary(DataStream);
WriteCommonXObject(DataStream, VSig.Rect, StreamContents);
int FRMId = XRef.GetNewObject(DataStream);
SaveProcSet(DataStream, XRef, false);
SaveResourcesFirstXObject(DataStream, XRef, FRMId);
EndDictionary(DataStream);
WriteStream(DataStream, StreamContents);
TIndirectRecord.SaveTrailer(DataStream);
SaveFRM(DataStream, XRef, VSig, FRMId);
}
