public virtual void Test01()
{
System.Console.Out.WriteLine(new FileInfo(sourceFolder).FullName);
PdfDocument pdfDocument = new PdfDocument(new PdfReader(sourceFolder + "in01.pdf"));
// build strategy
RegexBasedLocationExtractionStrategy extractionStrategy = new RegexBasedLocationExtractionStrategy(iText.IO.Util.StringUtil.RegexCompile
("\\{\\{Signature\\}\\}"));
// get locations
IList <IPdfTextLocation> locationList = new List <IPdfTextLocation>();
for (int x = 1; x <= pdfDocument.GetNumberOfPages(); x++)
{
new PdfCanvasProcessor(extractionStrategy).ProcessPageContent(pdfDocument.GetPage(x));
foreach (IPdfTextLocation location in extractionStrategy.GetResultantLocations())
{
if (location != null)
{
locationList.Add(location);
}
}
}
// compare
NUnit.Framework.Assert.AreEqual(1, locationList.Count);
IPdfTextLocation loc = locationList[0];
NUnit.Framework.Assert.AreEqual("{{Signature}}", loc.GetText());
NUnit.Framework.Assert.AreEqual(23, (int)loc.GetRectangle().GetX());
NUnit.Framework.Assert.AreEqual(375, (int)loc.GetRectangle().GetY());
NUnit.Framework.Assert.AreEqual(55, (int)loc.GetRectangle().GetWidth());
NUnit.Framework.Assert.AreEqual(11, (int)loc.GetRectangle().GetHeight());
// close
pdfDocument.Close();
}
public virtual void TestLigatureBeforeLigature()
{
System.Console.Out.WriteLine(new FileInfo(sourceFolder).FullName);
PdfDocument pdfDocument = new PdfDocument(new PdfReader(sourceFolder + "ligature.pdf"));
// build strategy
RegexBasedLocationExtractionStrategy extractionStrategy = new RegexBasedLocationExtractionStrategy("ca");
// get locations
IList <IPdfTextLocation> locationList = new List <IPdfTextLocation>();
for (int x = 1; x <= pdfDocument.GetNumberOfPages(); x++)
{
new PdfCanvasProcessor(extractionStrategy).ProcessPageContent(pdfDocument.GetPage(x));
foreach (IPdfTextLocation location in extractionStrategy.GetResultantLocations())
{
if (location != null)
{
locationList.Add(location);
}
}
}
// compare
NUnit.Framework.Assert.AreEqual(1, locationList.Count);
IPdfTextLocation loc = locationList[0];
NUnit.Framework.Assert.AreEqual("ca", loc.GetText());
Rectangle rect = loc.GetRectangle();
NUnit.Framework.Assert.AreEqual(36, rect.GetX(), 0.0001);
NUnit.Framework.Assert.AreEqual(655.4600, rect.GetY(), 0.0001);
NUnit.Framework.Assert.AreEqual(25.1000, rect.GetWidth(), 0.0001);
NUnit.Framework.Assert.AreEqual(20, rect.GetHeight(), 0.0001);
pdfDocument.Close();
}
public virtual Color GetRedactionColor(IPdfTextLocation location)
{
for (int i = 0; i < strategies.Count; i++)
{
if (locations.Get(i).Contains(location))
{
return(strategies[i].GetRedactionColor(location));
}
}
return(ColorConstants.BLACK);
}
public static void Sign(string input, string output, ImageData stamper, ICipherParameters privateKey, X509Certificate[] chain, string flag)
{
PdfDocument document = new PdfDocument(new PdfReader(input));
PdfAcroForm acroForm = PdfAcroForm.GetAcroForm(document, false);
bool append = (acroForm != null && acroForm.GetSignatureFlags() != 0);
int pageNumber = document.GetNumberOfPages();
RegexBasedLocationExtractionStrategy strategy = new RegexBasedLocationExtractionStrategy(flag);
PdfDocumentContentParser parser = new PdfDocumentContentParser(document);
parser.ProcessContent(pageNumber, strategy);
var locations = new List <IPdfTextLocation>(strategy.GetResultantLocations());
document.Close();
StampingProperties properties = new StampingProperties();
properties = append ? properties.UseAppendMode() : properties;
PdfSigner signer = new PdfSigner(new PdfReader(input), new FileStream(output, FileMode.Create), properties);
signer.SetCertificationLevel(PdfSigner.CERTIFIED_NO_CHANGES_ALLOWED);
PdfSignatureAppearance appearance = signer.GetSignatureAppearance();
appearance.SetPageNumber(pageNumber);
int size = locations.Count;
if (size != 0)
{
IPdfTextLocation location = locations[size - 1];
float flagX = location.GetRectangle().GetX();
float flagY = location.GetRectangle().GetY();
float width = stamper.GetWidth();
float height = stamper.GetHeight();
float x = flagX - width / 2;
float y = flagY - height / 2;
appearance.SetRenderingMode(PdfSignatureAppearance.RenderingMode.GRAPHIC);
appearance.SetSignatureGraphic(stamper);
appearance.SetPageRect(new Rectangle(x, y, width, height));
}
PrivateKeySignature signature = new PrivateKeySignature(privateKey, DigestAlgorithms.SHA256);
signer.SignDetached(signature, chain, null, null, null, 0, PdfSigner.CryptoStandard.CADES);
}
private void removeDuplicates(IList <IPdfTextLocation> sortedList)
{
IPdfTextLocation lastItem = null;
int orgSize = sortedList.Count;
for (int i = orgSize - 1; i >= 0; i--)
{
IPdfTextLocation currItem = sortedList[i];
Rectangle currRect = currItem.GetRectangle();
if (lastItem != null && currRect.EqualsWithEpsilon(lastItem.GetRectangle()))
{
sortedList.Remove(currItem);
}
lastItem = currItem;
}
}
public virtual Color GetRedactionColor(IPdfTextLocation location)
{
return(redactionColor);
}
public virtual Color GetRedactionColor(IPdfTextLocation rect)
{
return(colorByRectangle.ContainsKey(rect.GetRectangle()) ? colorByRectangle.Get(rect.GetRectangle()) : ColorConstants
.BLACK);
}