public int CreatePDF(Stream stream)
{
var doc = new GcPdfDocument();
using (var fs = new FileStream(Path.Combine("Resources", "PDFs", "SlidePages.pdf"), FileMode.Open, FileAccess.Read))
{
// Load the PDF containing redact annotations (areas marked for redaction):
doc.Load(fs);
var rc = new RectangleF(16, 16, 280, 300);
var redact = new RedactAnnotation()
{
Rect = rc,
Page = doc.Pages[0],
OverlayText = "This content has been redacted.",
OverlayFillColor = Color.PaleGoldenrod
};
// Apply the redact:
doc.Redact(redact);
// doc.Pages[0].Graphics.DrawRectangle(rc, Color.Red);
// Done:
doc.Save(stream);
return(doc.Pages.Count);
}
}
public int CreatePDF(Stream stream)
{
var doc = new GcPdfDocument();
using (var fs = new FileStream(Path.Combine("Resources", "PDFs", "TimeSheet.pdf"), FileMode.Open, FileAccess.Read))
{
doc.Load(fs);
// Note: Acrobat does not allow to apply redactions in a digitally signed
// document, so first we find and remove any existing signatures:
removeSignatureFields(doc.AcroForm.Fields);
// Loop through pages, removing anything that looks like a short date:
foreach (var page in doc.Pages)
{
var tmap = page.GetTextMap();
foreach (ITextLine tline in tmap)
{
if (Regex.Match(tline.Text.Trim(), @"\d+[/-]\w+[/-]\d").Success)
{
var redact = new RedactAnnotation()
{
Rect = tline.GetCoords().ToRect(),
MarkBorderColor = Color.Red,
MarkFillColor = Color.Yellow,
Page = page
};
// If we hadn't already set redact.Page = page, we could do this:
// page.Annotations.Add(redact);
}
}
}
// Done:
doc.Save(stream);
return(doc.Pages.Count);
// This code is from the RemoveSignatureFields sample:
void removeSignatureFields(FieldCollection fields)
{
for (int i = fields.Count - 1; i >= 0; --i)
{
removeSignatureFields(fields[i].Children);
if (fields[i] is SignatureField)
{
fields.RemoveAt(i);
}
}
}
}
}
