I was trying to redact data from scanned PDF using Itext 5 but somehow it's not working out for me. I was only able to create redaction but not able to apply it. I tried with their given examples but it only works until creating redaction
String fileName = "scanned.pdf";
String dest = "output_scannedPdf.pdf";
PdfReader reader = new PdfReader(SRC + fileName);
int page = 1;
Rectangle rect = new Rectangle(500, 50, 200, 300);
PdfStamper stamper = new PdfStamper(reader, new FileOutputStream(DEST + dest));
PdfAnnotation annotation = new PdfAnnotation(stamper.getWriter(), rect);
annotation.put(PdfName.SUBTYPE, new PdfName("Redact"));
annotation.setTitle("My author");
annotation.put(new PdfName("Subj"), new PdfName("Redact"));
float[] fillColor = { 0, 0, 0 };
annotation.put(new PdfName("IC"), new PdfArray(fillColor));
float[] fillColorRed = { 1, 0, 0 };
annotation.put(new PdfName("OC"), new PdfArray(fillColorRed));
stamper.addAnnotation(annotation, page);
// manipulatePdf(dest, dest1);
PdfCleanUpProcessor cleaner = new PdfCleanUpProcessor(stamper);
cleaner.cleanUp();
stamper.close();
reader.close();
I'm getting a null pointer exception in extractLocationsFromRedactAnnots() method PdfName annotSubtype = annotDict.getAsName(PdfName.SUBTYPE);
Related
Only last slide is getting convert means last slide overlapping every slides. Can anyone suggest how to combine it in one PDF?
I have tried with different approach but they are first creating image and then PDF.
FileInputStream inputStream = new FileInputStream(in);
SlideShow ppt = new SlideShow(inputStream);
inputStream.close();
Dimension pgsize = ppt.getPageSize();
Document document = new Document();
PdfWriter pdfWriter = PdfWriter.getInstance(document, new FileOutputStream(out));
document.setPageSize(new Rectangle(
(float)pgsize.getWidth(), (float)pgsize.getHeight()));
document.open();
PdfGraphics2D graphics= null;
for (int i = 0; i < ppt.getSlides().length; i++) {
Slide slide = ppt.getSlides()[i];
graphics = (PdfGraphics2D) pdfWriter.getDirectContent()
.createGraphics((float)pgsize.getWidth(), (float)pgsize.getHeight());
slide.draw(graphics);
}
graphics.dispose();
document.close();
I tiied to add a TextBox to the right corner of the existing pdf using c#, but im unable to get it done. I have wrote the following code,but it is not helping in solving the problem, can any body please suggest me
using (MemoryStream stream = new MemoryStream())
{
PdfReader reader = new PdfReader(bytes);
PdfReader.unethicalreading = true;
Paragraph p = new Paragraph();
Document doc = new Document();
using (PdfStamper stamper = new PdfStamper(reader, stream))
{
PdfContentByte canvas = stamper.GetOverContent(1);
iTextSharp.text.Rectangle size = reader.GetPageSizeWithRotation(1);
//PdfContentByte cb = null;
//PdfImportedPage page;
int pages = reader.NumberOfPages;
for (int i = 1; i <= pages; i++)
{
var size1 = reader.GetPageSize(i);
w = size1.Width;
h = size1.Height;
stamper.FormFlattening = true;
TextField tf = new TextField(stamper.Writer, new iTextSharp.text.Rectangle(0, 0, 300, 100), displaytext);
//Change the orientation of the text
tf.Rotation = 0;
stamper.AddAnnotation(tf.GetTextField(), i);
}
}
bytes = stream.ToArray();
}
File.WriteAllBytes(str, bytes);
As the OP clarified in comments to the question, he wants
to add the text as a page content in the right bottom corner of the page and
the page content previously existing there to be removed.
A simple implementation of this would include
first covering the existing page content with a filled rectangle and
then writing text there.
These tasks can be achieved with these helper methods:
void EmptyTextBoxSimple(PdfStamper stamper, int pageNumber, Rectangle boxArea, BaseColor fillColor)
{
PdfContentByte canvas = stamper.GetOverContent(pageNumber);
canvas.SaveState();
canvas.SetColorFill(fillColor);
canvas.Rectangle(boxArea.Left, boxArea.Bottom, boxArea.Width, boxArea.Height);
canvas.Fill();
canvas.RestoreState();
}
and
ColumnText GenerateTextBox(PdfStamper stamper, int pageNumber, Rectangle boxArea)
{
PdfContentByte canvas = stamper.GetOverContent(pageNumber);
ColumnText columnText = new ColumnText(canvas);
columnText.SetSimpleColumn(boxArea);
return columnText;
}
E.g. like this:
using (PdfReader reader = new PdfReader(source))
using (PdfStamper stamper = new PdfStamper(reader, new FileStream(dest, FileMode.Create)))
{
Rectangle cropBox = reader.GetCropBox(1);
Rectangle bottomRight = new Rectangle(cropBox.GetRight(216), cropBox.Bottom, cropBox.Right, cropBox.GetBottom(146));
EmptyTextBoxSimple(stamper, 1, bottomRight, BaseColor.WHITE);
ColumnText columnText = GenerateTextBox(stamper, 1, bottomRight);
columnText.AddText(new Phrase("Some test text to draw into a text box in the lower right corner of the first page"));
columnText.Go();
}
For this source page
the sample code generates this
Addendum
In a comment the OP indicated
it is working for all files but for some pdf files it is displaying in the middle
Eventually he supplied a sample file for which the issue occurs. And indeed, with this file the issue could be reproduced.
The cause for the issue is that the pages in the sample file use page rotation, something that iText (only) partially allows users to ignore. In particular iText automatically rotates text to be upright after rotation and transforms coordinates, but when retrieving the cropbox of a page, one still has to apply rotation before making use of it coordinates. Thus, a more complete example would be like this:
using (PdfReader reader = new PdfReader(source))
using (PdfStamper stamper = new PdfStamper(reader, new FileStream(dest, FileMode.Create)))
{
Rectangle cropBox = reader.GetCropBox(1);
int rotation = reader.GetPageRotation(1);
while (rotation > 0)
{
cropBox = cropBox.Rotate();
rotation -= 90;
}
Rectangle bottomRight = new Rectangle(cropBox.GetRight(216), cropBox.Bottom, cropBox.Right, cropBox.GetBottom(146));
EmptyTextBoxSimple(stamper, 1, bottomRight, BaseColor.WHITE);
ColumnText columnText = GenerateTextBox(stamper, 1, bottomRight);
columnText.AddText(new Phrase("Some test text to draw into a text box in the lower right corner of the first page"));
columnText.Go();
}
I have this code to get field positions
PdfReader reader = new PdfReader(ssPdf);
var output = new MemoryStream();
var stamper = new PdfStamper(reader, output);
IList<AcroFields.FieldPosition> positions =stamper.AcroFields.GetFieldPositions(ssName);
and this to remove one position rect
if (positions.count>0)
positions.RemoveAt(1);
But then i dont have any method to set the field positions list to the stamper.
If i call the GetFieldPositions again it will return all the fields and not without the one i deleted
IList<AcroFields.FieldPosition> positions2 = stamper.AcroFields.GetFieldPositions(ssName);
stamper.Close();
reader.Close();
I cannot get the text to be centered on the page. What am I doing wrong? I have tried several ways to get the page with, but none seem to make the text centered on the page.....
BaseFont bf = BaseFont.CreateFont("c:\\windows\\fonts\\calibri.ttf", BaseFont.CP1252, BaseFont.NOT_EMBEDDED);
PdfReader reader = new PdfReader("C:\\temp\\Certificate12.pdf");
var pageSize = reader.GetPageSize(1);
iTextSharp.text.Rectangle rec2 = new iTextSharp.text.Rectangle(PageSize.LETTER);
PdfStamper stamper = new PdfStamper(reader, stream1);
PdfContentByte canvas = stamper.GetUnderContent(1);
canvas.BeginText();
canvas.SetFontAndSize(bf, 24);
string nameText = "First Name Last Name";
int textWidth = (int)nameText.Length;
int canvasWidth = (int)canvas.PdfDocument.PageSize.Width;
float xStart = (canvasWidth / 2) - (textWidth / 2);
canvas.ShowTextAligned(PdfContentByte.ALIGN_CENTER, nameText, xStart, pageSize.GetTop(Utilities.MillimetersToPoints(145)), 0);
First of all, if you use ShowTextAligned with ALIGN_CENTER, iTextSharp will center the text for you, so you do not have to deal with the text width at all. You merely need to tell it to center the text on which center point.
Thus, you can center your text on the page like this:
BaseFont bf = BaseFont.CreateFont("c:\\windows\\fonts\\calibri.ttf", BaseFont.CP1252, BaseFont.NOT_EMBEDDED);
using (PdfReader reader = new PdfReader(source))
using (PdfStamper stamper = new PdfStamper(reader, new FileStream(dest, FileMode.Create, FileAccess.Write)))
{
Rectangle pageSize = reader.GetPageSize(1);
PdfContentByte canvas = stamper.GetUnderContent(1);
string nameText = "First Name Last Name";
canvas.BeginText();
canvas.SetFontAndSize(bf, 24);
canvas.ShowTextAligned(PdfContentByte.ALIGN_CENTER, nameText, (pageSize.Left + pageSize.Right) / 2, pageSize.GetTop(Utilities.MillimetersToPoints(145)), 0);
canvas.EndText();
}
I'm developing a System in which I have to add some images to an existing PDF Document.
This works great with iText 5.1.3, but for some reason in a PDF that contains a scanned image it won't add any of the images.
Here's the link to the PDF Document that can't be modified with PdfStamper
and here's the code
PdfReader reader = new PdfReader("Registro celular_OR.pdf");
PdfStamper stamper = new PdfStamper(reader, new FileOutputStream("DocStamped.pdf"));
Image img = Image.getInstance("someImage.jpg");
img.setAbsolutePosition(0, 0);
img.scaleAbsolute(50f, 50f);
PdfContentByte over = null;
int total = reader.getNumberOfPages() + 1;
for(int i = 1; i < total; i++) {
System.out.println("Procesando Pagina: " + i);
over = stamper.getOverContent(i);
over.addImage(img);
over.beginText();
BaseFont bf_times = BaseFont.createFont(BaseFont.TIMES_ROMAN, "Cp1252", false);
over.setFontAndSize(bf_times, 8);
over.showTextAligned(PdfContentByte.ALIGN_CENTER, "TEXTO PRUEBA", 50, 50, 0);
over.endText();
}
stamper.close();
A PDF page does not need to have its lower left corner at (0, 0). It can be anywhere in the coordinate system. So an A4 page can be (0, 0, 595, 842), but it might as well be (1000, 2000, 1595, 2842).
You are positioning the image at (0, 0):
img.setAbsolutePosition(0, 0);
But the page of this document is defined as (0, 15366, 469, 15728). The image is actually added to the output document, but it's outside the visible area of the page.
You have to get the coordinates of the page to position the image. Inside the loop, do this:
img.setAbsolutePosition(reader.getPageSize(i).getLeft(), reader.getPageSize(i).getBottom());