I am adding fields to an existing PDF using iText 7.NET. (7.1.16) When they are added, I wind up with a duplicate of every field on the last page. For example, in a two page document, with the below code, a second field with the same name, Field1 and red border will appear on page two, in the same position. New to iText7, guidance appreciated, Thank You
PdfReader reader = new PdfReader(inputFile);
PdfDocument pdf2 = new PdfDocument(reader, new PdfWriter(outputFile));
PdfAcroForm form = PdfAcroForm.GetAcroForm(pdf2, true);
PdfFormField tf = PdfTextFormField.CreateText(
pdf2, new Rectangle(1, 20, 30, 40), "Field1", "");
tf.SetPage(1);
tf.SetBorderColor(ColorConstants.RED);
tf.SetBorderWidth(2);
form.AddField(tf);
pdf2.Close();
So the help for the non-overloaded version of AddField(), without passing a PdfPage parameter mentions that it adds it to the last page of the document. I suppose the SetPage() on the field just results on it also being on the specified page.
Related
Hi I recently posted a question here :
IText PDFImage seems to shrink or disappear during new pages after upgrade from 2.1.7 to 5.5.5 (Java .jars)
But I think it is not the problem with the library but more of a missing setting sort of problem. I am wondering if there is a way to control what element gets drawn on the existing page verses pushing to a new page
I want to do the following
-create document
-create pdfPTable
-create a bunch of image element for each PdfPCells
-add to pdfPTable then write to document
Result: It seems that some images get shrink near the end/beginng of the page or is missing ( seems like its trying to fit on to the page )
Sample code again for visibility
ByteArrayOutputStream baos = createTemporaryOutputStream();
Document doc = newDocument();
PdfWriter writer = newWriter(doc, baos);
writer.setViewerPreferences(PdfWriter.ALLOW_PRINTING | PdfWriter.PageLayoutSinglePage);
//create page rectangle landscape
Rectangle page = new Rectangle(PageSize.A4.rotate());
doc.setPageSize(page);
doc.setMargins((float)36.0, (float)36.0, (float)36.0, (float)36.0);
doc.open();
//create element pdf table.
PdfPTable table = new PdfPTable(new float[]{(float) 770.0});
table.setWidthPercentage(100);
table.setSplitRows(true);
table.setSplitLate(false);
table.setHeaderRows(0);
// in my case I used 5 800*600 images (same picture)
//then I loop through them and create pdfcell
//and then add it to table which then gets added to the document
List<Image> hi = (List<Image>) model.get("images");
for (Image image : hi) {
com.itextpdf.text.Image pdfImage = com.itextpdf.text.Image.getInstance(image.getBytes());
pdfImage.scalePercent((float) (0.8642384 * 100));
PdfPCell cell = new PdfPCell(pdfImage, false);
table.addCell(cell);
}
doc.add(table);
doc.close();
thank you for your time. Any insight as to what my problem is would be helpful
I have a pdf which include text written in Type 3 Font.
I want to get some text from it and write it into other pdf in exactly same shape.
I am using itext. Please give me a tip.
edit: I attached my code.
DocumentFont f = renderInfo.getFont();
String str = renderInfo.getText();
x = renderInfo.getBaseline().getStartPoint().get(Vector.I1);
In this code, I want to write str into x value position.
In Type 3 Font, is it work?
You can copy parts of one page to a new one using code like this:
InputStream resourceStream = getClass().getResourceAsStream("from.pdf");
PdfReader reader = new PdfReader(new FileOutputStream("from.pdf"));
Rectangle pagesize = reader.getPageSizeWithRotation(1);
Document document = new Document(pagesize);
PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream("areaOfFrom.pdf"));
document.open();
PdfContentByte content = writer.getDirectContent();
PdfImportedPage page = writer.getImportedPage(reader, 1);
content.saveState();
content.rectangle(0, 350, 360, 475);
content.clip();
content.newPath();
content.addTemplate(page, 0, 0);
content.restoreState();
document.close();
reader.close();
This turns your
into
Unfortunately, though, that hidden content is merely... hidden... but it is still there. You can especially mark the lines with that hidden text and try to copy&paste them.
If you want to completely remove that hidden text (or start out by merely copying the desired text), you have to inspect the content of the imported page and filter it. I'm afraid iText does not yet explicitly support something like that. It can be done using the iText lowlevel API but it is quite some work.
I'm trying generate barcodes from a text string and then PDF the results using iTextSharp. Right now, I have the code below:
// Create a Document object
var pdfToCreate = new Document(PageSize.A4, 0, 0, 0, 0);
// Create a new PdfWrite object, writing the output to a MemoryStream
var outputStream = new MemoryStream();
var pdfWriter = PdfWriter.GetInstance(pdfToCreate, outputStream);
PdfContentByte cb = new PdfContentByte(pdfWriter);
// Open the Document for writing
pdfToCreate.Open();
PdfPTable BarCodeTable = new PdfPTable(3);
// Create barcode
Barcode128 code128 = new Barcode128();
code128.CodeType = Barcode.CODE128_UCC;
code128.Code = "00100370006756555316";
// Generate barcode image
iTextSharp.text.Image image128 = code128.CreateImageWithBarcode(cb, null, null);
// Add image to table cell
BarCodeTable.AddCell(image128);
// Add table to document
pdfToCreate.Add(BarCodeTable);
pdfToCreate.Close();
When I run this and try to open the PDF programmatically, I receive an error saying "The document has no pages."
However when I use:
pdfToCreate.Add(image128);
(instead of adding to a table, I add it to a cell), the barcode shows up (though it's floating off the document).
I'd like to send the barcodes to a table so that I can format the document easier. The final product will be 20-60 barcodes read from a database. Any idea on where I'm going wrong?
You are telling the PdfPTable constructor to create a three column table but only providing one of the columns:
PdfPTable BarCodeTable = new PdfPTable(3);
iTextSharp by default ignores incomplete rows. You can either change the constructor to match your column count, add the extra cells or call BarCodeTable.CompleteRow() which will fill in the blanks using the default cell template.
I use iTextSharp to populate fields in a PDF. I would like the PDF to stay editable when the user opens it (i.e. so I can't flatten the PDF).
The problem is that when I stamp the PDF and view the values in Adobe Reader the fields remain blank.
If I stamp the PDF, and flatten it, and then view the values then the fields do in fact have values.
How can I populate fields and keep the PDF editable?
Here's my method as an ASP.NET MVC action:
public ActionResult GetPdfTWOWithSurname()
{
PdfHelpers _pdfHelper = new PdfHelpers(Server, Url, "~/Content/newForm.pdf");
var outStream = new MemoryStream();
var pdfReader = new PdfReader(_pdfHelper.GetPdfBytes());
var pdfStamper = new PdfStamper(pdfReader, outStream, '\0', true); //The 'true' value is important. Otherwise the document loses some dynamic features.
pdfStamper.Writer.CloseStream = false;
pdfStamper.FormFlattening = false; //Allow editing after close.
var fields = pdfStamper.AcroFields;
//Fill in text fields...
fields.SetField("topmostSubform[0].Page2[0].InvestorDetails_Surname[0]", "This is a surname");
pdfStamper.Close();
//Get outStream bytes and return...
outStream.Seek(0, SeekOrigin.Begin);
byte[] outBytes = new byte[outStream.Length];
outStream.Read(outBytes, 0, (int)outStream.Length);
return File(outBytes, "application/pdf", "ThePdfFileTWO.pdf");
}
Note that this PDF is reader enabled, and I assume it stays that way even after the save since Adobe reader shows the "Extended" toolbox when I open the file. And the fields remain editable.
Also note that the PDF remains editable, and the fields have values... in FoxitPDF reader.
Please HELP
I have that same issue and it only happens if the PDF was created with Adobe Acrobat with Extended Features. Only option I've found is to re-create the form so that pop-up box has no reason to pop-up. GL
http://what-when-how.com/itext-5/preserving-the-usage-rights-of-reader-enabled-forms-itext-5/
set FormFalttering to False and set RemoveUsageRights() (depends from the iText version)
How to add a form field to an existing pdf with itextsharp?
I have an existing pdf document, I'd like to add form fields to it without creating a copy and writing out a new document.
After further review, the ruling on the field is overturned. Turns out if you form flatten the stamper the fields do not show on the resulting document (because they lack 'appearance' settings). BTW, form flattening prevents further edits of a form field. Now we can add appearance to the form, however, an easier way is to use the TextField class and not worry about explicitly setting up 'appearance' objects.
public void ABetterWayToAddFormFieldToExistingPDF( )
{
PdfReader reader = new PdfReader(#"c:\existing.pdf");
FileStream out = new FileStream(#"C:\existingPlusFields.pdf", FileMode.Create, FileAccess.Write);
PdfStamper stamp = new PdfStamper(reader, out);
TextField field = new TextField(stamp.Writer, new iTextSharp.text.Rectangle(40, 500, 360, 530), "some_text");
// add the field here, the second param is the page you want it on
stamp.AddAnnotation(field.GetTextField(), 1);
stamp.FormFlattening = true; // lock fields and prevent further edits.
stamp.Close();
}
I struggled with this for awhile so figured I'd post the Question & Answer
Using the PdfStamper itext class is the key. (I guess this does make a copy but it's much cleaner than using the itext PdfCopy classes).
public void AddFormFieldToExistingPDF( )
{
PdfReader reader = new PdfReader(#"c:\existing.pdf");
FileStream out = new FileStream(#"C:\existingPlusFields.pdf", FileMode.Create, FileAccess.Write);
PdfStamper stamp = new PdfStamper(reader, out);
PdfFormField field = PdfFormField.CreateTextField(stamp.Writer, false, false, 50);
// set a field w/some position and size
field.SetWidget(new iTextSharp.text.Rectangle(40, 500, 360, 530),
PdfAnnotation.HIGHLIGHT_INVERT);
field.SetFieldFlags(PdfAnnotation.FLAGS_PRINT);
field.FieldName = "some_field";
// add the field here, the second param is the page you want it on
stamp.AddAnnotation(field, 1);
stamp.Close();
}
Using pdfStamper you can complete it.
PdfStamper Stamper= new PdfStamper(new PdfReader(sourcefile), File.Create(NewOutputFile));
TextField moreText = new TextField(Stamper.Writer,
new iTextSharp.text.Rectangle(20, 20, 590, 780), "moreText");
moreText.Visibility = TextField.VISIBLE_BUT_DOES_NOT_PRINT;
moreText.Text = "Use this space for any additional information";
moreText.Options = (TextField.MULTILINE);
PdfFormField Fieldtxt = moreText.GetTextField();
Stamper.AddAnnotation(Fieldtxt, n);