/// <summary>
/// Clears the contents of a given page leaving header and footer.
/// </summary>
/// <param name="inputPdf">The pdf to modify.</param>
/// <param name="outputPdf">The pdf created after modification.</param>
/// <param name="pageNum">The page number to be cleared.</param>
public static void ClearContents(string inputPdf, string outputPdf, int pageNum)
{
using (FileStream fs = new FileStream(outputPdf, FileMode.Create, FileAccess.Write))
{
PdfReader reader = new PdfReader(inputPdf);
PdfStamper stamper = new PdfStamper(reader, fs);
//Get the reactangle leaving header and footer
Rectangle mediabox = reader.GetPageSize(pageNum);
float llx = mediabox.GetLeft(10f);
float urx = mediabox.GetRight(10f);
float lly = mediabox.GetBottom(10f) + 100f; // Leave footer
float ury = mediabox.GetTop(10f) - 120f; //Leave header
List <PdfCleanUpLocation> cleanUpLocations = new List <PdfCleanUpLocation>
{
new PdfCleanUpLocation(pageNum, new iTextSharp.text.Rectangle(llx, lly, urx, ury), BaseColor.WHITE)
};
//Use the PdfCleanUpProcessor to clean the page
PdfCleanUpProcessor cleaner = new PdfCleanUpProcessor(cleanUpLocations, stamper);
cleaner.CleanUp();
stamper.Close();
reader.Close();
}
}
/// <summary>
/// Removes the pagination from the footer.
/// </summary>
/// <param name="inputPdf">The pdf to modify.</param>
/// <param name="outputPdf">The pdf created with removed pagination.</param>
public static void RemoveFooterPagination(string inputPdf, string outputPdf)
{
using (FileStream fs = new FileStream(outputPdf, FileMode.Create, FileAccess.Write))
{
//TaggedPdfReaderTool reader = new TaggedPdfReaderTool();
//using (MemoryStream ms = new MemoryStream())
//{
// reader.ConvertToXml(new PdfReader(inputPdf), ms);
//} // Not a tagged pdf
PdfReader reader = new PdfReader(inputPdf);
PdfStamper stamper = new PdfStamper(reader, fs);
List <PdfCleanUpLocation> cleanUpLocations = new List <PdfCleanUpLocation>();
int n = reader.NumberOfPages;
for (int i = 6; i <= n; i++)
{
cleanUpLocations.Add(new PdfCleanUpLocation(i, new iTextSharp.text.Rectangle(400, 0, 440, 40), BaseColor.WHITE));
}
PdfCleanUpProcessor cleaner = new PdfCleanUpProcessor(cleanUpLocations, stamper);
cleaner.CleanUp();
//If clean up does not work add a white image
iTextSharp.text.Image image = iTextSharp.text.Image.GetInstance(new Bitmap(120, 20), BaseColor.WHITE);
image.SetAbsolutePosition(400, 40);
//Adds the image to the output pdf
stamper.GetOverContent(1).AddImage(image, true);
stamper.Close();
reader.Close();
}
}
private void CleanUp(String input, String output, IList<PdfCleanUpLocation> cleanUpLocations)
{
DirectoryInfo outDir = new DirectoryInfo(OUTPUT_PATH);
if (!outDir.Exists) {
outDir.Create();
}
PdfReader reader = new PdfReader(input);
Stream fos = new FileStream(output, FileMode.Create);
PdfStamper stamper = new PdfStamper(reader, fos);
PdfCleanUpProcessor cleaner = (cleanUpLocations == null)? new PdfCleanUpProcessor(stamper) : new PdfCleanUpProcessor(cleanUpLocations, stamper);
cleaner.CleanUp();
stamper.Close();
fos.Close();
reader.Close();
}
private void Redact(string inFile, string outFile, List <RectAndText> RATs)
{
using (Stream stream = new FileStream(inFile, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
{
PdfReader pdfReader = new PdfReader(stream);
using (PdfStamper stamper = new PdfStamper(pdfReader, new FileStream(outFile, FileMode.OpenOrCreate)))
{
List <PdfCleanUpLocation> cleanUpLocations = new List <PdfCleanUpLocation>();
foreach (RectAndText RAT in RATs)
{
cleanUpLocations.Add(new PdfCleanUpLocation(RAT.Page, RAT.Rect, iTextSharp.text.BaseColor.WHITE));
}
PdfCleanUpProcessor cleaner = new PdfCleanUpProcessor(cleanUpLocations, stamper);
cleaner.CleanUp();
}
}
}
