I can sign a pdf file, but the time format is too long.
I wabt to change Date format, but I couldnt..
Here is my code.
PdfReader reader = new PdfReader(input);
PdfStamper stp = PdfStamper.CreateSignature(reader, output, '\0');
PdfSignatureAppearance sap = stp.SignatureAppearance;
**sap.SignDate = DateTime.Now;**
sap.SetCrypto(null, chain, null, PdfSignatureAppearance.WINCER_SIGNED);
sap.Reason = "Testování";
sap.Location = "Praha";
sap.Acro6Layers = true;
sap.Render = PdfSignatureAppearance.SignatureRender.GraphicAndDescription;
PdfSignature dic = new PdfSignature(PdfName.ADOBE_PPKMS, PdfName.ADBE_PKCS7_SHA1);
**dic.Date = new PdfDate(sap.SignDate);**
And, at the my pdf file, the signature stamp is like this:
"2012.11.01 05:21:00 +02:00"
but I want to like that: "01.11.2012 19:21:00"
Please go to http://itextpdf.com/book/digitalsignatures and read section 2.4 to find out how to create different signature appearances.
Related
I have to put my list data in a table in a pdf file. My data has some Arabic words. When my pdf is generated, the Arabic words don't appear. I searched and found that I need itext7.pdfcalligraph so I installed it in my app. I found this code too https://itextpdf.com/en/blog/technical-notes/displaying-text-different-languages-single-pdf-document and tried to do something similar to allow Arabic words in my table but I couldn't figure it out.
This is a trial code before I apply it to my real list:
var path2 = global::Android.OS.Environment.ExternalStorageDirectory.AbsolutePath;
filePath = System.IO.Path.Combine(path2.ToString(), "myfile2.pdf");
stream = new FileStream(filePath, FileMode.Create);
PdfWriter writer = new PdfWriter(stream);
PdfDocument pdf2 = new iText.Kernel.Pdf.PdfDocument(writer);
Document document = new Document(pdf2, PageSize.A4);
FontSet set = new FontSet();
set.AddFont("ARIAL.TTF");
document.SetFontProvider(new FontProvider(set));
document.SetProperty(Property.FONT, "Arial");
string[] sources = new string[] { "يوم","شهر 2020" };
iText.Layout.Element.Table table = new iText.Layout.Element.Table(2, false);
foreach (string source in sources)
{
Paragraph paragraph = new Paragraph();
Bidi bidi = new Bidi(source, Bidi.DirectionDefaultLeftToRight);
if (bidi.BaseLevel != 0)
{
paragraph.SetTextAlignment(iText.Layout.Properties.TextAlignment.RIGHT);
}
paragraph.Add(source);
table.AddCell(new Cell(1, 1).SetTextAlignment(iText.Layout.Properties.TextAlignment.CENTER).Add(paragraph));
}
document.Add(table);
document.Close();
I updated my code and added the arial.ttf to my assets folder . i'm getting the following exception:
System.InvalidOperationException: 'FontProvider and FontSet are empty. Cannot resolve font family name (see ElementPropertyContainer#setFontFamily) without initialized FontProvider (see RootElement#setFontProvider).'
and I still can't figure it out. any ideas?
thanks in advance
- C #
I have a similar situation for Turkish characters, and I've followed these
steps :
Create a folder under projects root folder which is : /wwwroot/Fonts
Add OpenSans-Regular.ttf under the Fonts folder
Path for font is => ../wwwroot/Fonts/OpenSans-Regular.ttf
Create font like below :
public static PdfFont CreateOpenSansRegularFont()
{
var path = "{Your absolute path for FONT}";
return PdfFontFactory.CreateFont(path, PdfEncodings.IDENTITY_H, true);
}
and use it like :
paragraph.Add(source)
.SetFont(FontFactory.CreateOpenSansRegularFont()); //set font in here
table.AddCell(new Cell(1, 1)
.SetTextAlignment(iText.Layout.Properties.TextAlignment.CENTER)
.Add(paragraph));
This is how I used font factory for Turkish characters ex: "ü,i,ç,ş,ö"
For Xamarin-Android, you could try
string documentsPath = Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments);
var path = Path.Combine(documentsPath, "Fonts/Arial.ttf");
Look i fixed it in java,this may help you:
String font = "your Arabic font";
//the magic is in the next 4 lines:
PdfFontFactory.register(font);
FontProgram fontProgram = FontProgramFactory.createFont(font, true);
PdfFont f = PdfFontFactory.createFont(fontProgram, PdfEncodings.IDENTITY_H);
LanguageProcessor languageProcessor = new ArabicLigaturizer();
//and look here how i used setBaseDirection and don't use TextAlignment ,it will work without it
com.itextpdf.kernel.pdf.PdfDocument tempPdfDoc = new com.itextpdf.kernel.pdf.PdfDocument(new PdfReader(pdfFile.getPath()), TempWriter);
com.itextpdf.layout.Document TempDoc = new com.itextpdf.layout.Document(tempPdfDoc);
com.itextpdf.layout.element.Paragraph paragraph0 = new com.itextpdf.layout.element.Paragraph(languageProcessor.process("الاستماره الالكترونية--الاستماره الالكترونية--الاستماره الالكترونية--الاستماره الالكترونية"))
.setFont(f).setBaseDirection(BaseDirection.RIGHT_TO_LEFT)
.setFontSize(15);
I have the below requirement.
Convert the SVG to PDF using Apache batik
Prepare source PDF document with Header and Footer using IText 7
Take the converted PDF and embed it in the content of the source PDF
I have seen IText supports converting an SVG to Image but the output is not proper. The output from batik seems to be perfect.
Below is my code. Can anyone please suggest a proper approach ? I am not able to achieve it
SVG to PDF using batik
FileInputStream inputStream = new FileInputStream(new File(Paths.get("Input").toAbsolutePath()+"/test.svg"));
byte[] bytes = IOUtils.toByteArray(inputStream);
FileOutputStream pdfOutputStream = new FileOutputStream(new File(Paths.get("Output").toAbsolutePath()+"/convertedSvg.pdf"));
Transcoder transcoder = new PDFTranscoder();
TranscoderInput transcoderInput = new TranscoderInput(new ByteArrayInputStream(bytes));
TranscoderOutput transcoderOutput = new TranscoderOutput(pdfOutputStream);
int dpi = 300;
transcoder.addTranscodingHint(PDFTranscoder.KEY_WIDTH, new Float(dpi * 29.7));
transcoder.addTranscodingHint(PDFTranscoder.KEY_HEIGHT, new Float(dpi * 42.0));
transcoder.addTranscodingHint(PDFTranscoder.KEY_PIXEL_UNIT_TO_MILLIMETER,(25.4f / 72f));
transcoder.transcode(transcoderInput, transcoderOutput);
iText Code
PdfWriter writer = new PdfWriter(new FileOutputStream(new File(Paths.get("Output").toAbsolutePath()+"/final.pdf")));
PdfDocument pdfDoc = new PdfDocument(writer);
pdfDoc.setDefaultPageSize(PageSize.A3.rotate());
NormalPageHeader headerHandler = new NormalPageHeader(Paths.get("images").toAbsolutePath() + "\\logo.png", pdfFontMap);
pdfDoc.addEventHandler(PdfDocumentEvent.START_PAGE, headerHandler);
PageEndEvent pageEndEvent = new PageEndEvent(Paths.get("images").toAbsolutePath() + "\\FooterLineExternal.png" ,pdfFontMap);
pdfDoc.addEventHandler(PdfDocumentEvent.END_PAGE, pageEndEvent);
Document doc = new Document(pdfDoc);
doc.getPageEffectiveArea(PageSize.A3.rotate());
Table imageTable = new Table(1);
imageTable.setBorder(Border.NO_BORDER);
imageTable.setWidth(UnitValue.createPercentValue(100));
Cell cell = new Cell();
Paragraph paragraph = new Paragraph("Horizontal Trajectory");
paragraph.setVerticalAlignment(VerticalAlignment.TOP);
cell.add(paragraph);
cell.setBorder(Border.NO_BORDER);
cell.setPaddingTop(50);
imageTable.addCell(cell);
doc.add(imageTable);
doc.close();
I' m trying to convert a docx document to pdf and store the newly created pdf file as a new version.
This is the test code:
var document = search.findNode("workspace://SpacesStore/30f334f3-d357-4ea6-a09f-09eab2da7488");
var folder = document.parent
var pdf = document.transformDocument('application/pdf');
pdf.name = "tranformed-" + pdf.name;
pdf.save();
document.name = "new-" + document.name + ".pdf";
document.mimetype = "application/pdf";
document.content = pdf.content;
document.save();
The document ends up empty.
Is this type of conversion possible with javaScript?
This Code create new pdf from docx and created pdf stored as version 1.0
var document = search.findNode("workspace://SpacesStore/30f334f3-d357-4ea6-a09f-09eab2da7488");
var folder = document.parent
var pdf = document.transformDocument('application/pdf');
pdf.name = "tranformed-" + pdf.name;
pdf.save();
Thanks for your support.
The problem was assigning the pdf content.
The following code seems to work only with plain text content:
document.content = pdf.content;
Paradoxically, the following is needed when assigning pdf content to a document.
document.properties.content.write(pdf.properties.content);
Thanks.
The adobe reader shows pdf signature status, valid and invalid.
I would like the reader to shows the dynamic(not static)timestamp status which is included in the signature.
The itext code I use is as follows.
PdfReader reader = new PdfReader(IN_FILE);
FileOutputStream fout = new FileOutputStream(OUT_FILE);
PdfStamper stp = PdfStamper.createSignature(reader, fout, '\0');
PdfSignatureAppearance sap = stp.getSignatureAppearance();
sap.setCrypto(null, chain, null, PdfSignatureAppearance.SELF_SIGNED);
sap.setVisibleSignature(new Rectangle(100, 100, 300, 200), 1, "Signature");
PdfSignature dic = new PdfSignature(PdfName.ADOBE_PPKLITE, new PdfName("adbe.pkcs7.detached"));
dic.setReason(sap.getReason());
dic.setLocation(sap.getLocation());
dic.setContact(sap.getContact());
dic.setDate(new PdfDate(sap.getSignDate()));
sap.setCryptoDictionary(dic);
int contentEstimated = 15000;
HashMap exc = new HashMap();
exc.put(PdfName.CONTENTS, new Integer(contentEstimated * 2 + 2));
sap.preClose(exc);
PDFTemplate sigLayer = PdfSignatureAppearance.getLayer(n);
is responsible for signature appearance. But I am unable to include the dynamic timestamp status.
The to-be-signed timestamp hash value is computed over the signed pdf, when the document's signature appearance has been created.
Modify the pdf adding the ts information will invalidate the signature...
I'm using iTextSharp to sign PDFs. When signing, it stamps the document with 4 fields: who signed, when, reason and location. What I meant to do is to add a field below (or above, that doesn't matter) with custom information.
Any Idea?
Here's my code that is generating the stamp:
PdfStamper stp = PdfStamper.CreateSignature(reader, memoryOut, '\0');
PdfSignatureAppearance sap = stp.SignatureAppearance;
iTextSharp.text.Rectangle rectangle = new iTextSharp.text.Rectangle(100, 100, 500, 200);
sap.SetVisibleSignature(rectangle, stp.Reader.NumberOfPages, null);
sap.SignDate = DateTime.Now;
sap.SetCrypto(null, chain, null, null);
sap.Reason = ssReason;
sap.Contact = ssContact;
sap.Location = ssLocation;
sap.Acro6Layers = true;
//sap.SignatureGraphic = iTextSharp.text.Image.GetInstance(ssImageUrl);
//sap.SignatureGraphic.ScaleToFit(131, 45);
sap.Render = PdfSignatureAppearance.SignatureRender.Description;
Several options:
modify one of the PdfTemplates from sap.getLayer(int).
call sap.setLayer2Text() to include your extra information.
Use a graphic. You can wrap a PdfTemplate in an Image, so you can draw anything you want. Then
sap.Render = PdfSignatureAppearance.SignatureRender.GraphicAndDescription
Hack The Source.