Hi,
> Am 30.07.2016 um 07:25 schrieb Tilman Hausherr <[email protected]>: > > Read this: > https://www.adobe.com/content/dam/Adobe/en/devnet/acrobat/pdfs/PPKAppearances.pdf > > what you need is the n2 layer. We have only the n0 layer. > > There's also something about the n2 layer here > https://issues.apache.org/jira/browse/PDFBOX-3198 > > but without a working example. > > Also have a look at your file with PDFDebugger. > > I'll have a look at your files later.... be patient…. Ill hack something together later today. Moving forward with 2.1 there will be an additional approach which will work similar to adding a signature field and using a signature design in Adobe Acrobat. This will not be compatible with the current PDVisibleSignatureDesigner etc. @Tilman - I havn't seen any files. Could you forward them to me or are they confidential? BR Maruan > > Tilman > > Am 29.07.2016 um 23:20 schrieb Diego Azevedo: >> Uhm.... Good idea. >> >> The appearance should be the /N entry inside the /AP entry on the /FT /Sig >> dictionary, right? (I'm no PDF expert, it just kind of made sense (maybe?)) >> >> This PDF here has the appearance I want (sent by my client): >> https://drive.google.com/open?id=0B9u-J6HILTH6NE1SSVVDZHhWSmc >> I tried to find it's appearance dictionary: >> >> 11 0 obj >> <</F 132/Type/Annot/Subtype/Widget/Rect[5 5 240 >> 120]/FT/Sig/DR<</XObject<</FRM 9 0 R>>>>/T(Signature1)/V 1 0 R/P 12 0 >> R/AP<</N 10 0 R>>>> >> endobj >> >> 10 0 obj >> <</Type/XObject/Resources<</XObject<</FRM 9 0 R>>/ProcSet [/PDF /Text >> /ImageB /ImageC /ImageI]>>/Subtype/Form/BBox[0 0 235 115]/Matrix [1 0 0 1 0 >> 0]/Length 29/FormType 1/Filter/FlateDecode>>stream >> q 1 0 0 1 0 0 cm /FRM Do Q >> endstream >> endobj >> >> Are these the droids I'm looking for? (I have absolutely no idea what this >> means) >> >> [ ]'s >> >> Diego Azevedo >> >> On 29/07/2016 16:44, Maruan Sahyoun wrote: >>> Hi, >>>> Am 29.07.2016 um 19:39 schrieb Diego Azevedo <[email protected]>: >>>> >>>> Thanks Tilman, >>>> >>>> Well, here is the source code (only the visual signature bit): >>>> >>>> // Creates the designer and set properties >>>> PDVisibleSignDesigner sigDesigner = new PDVisibleSignDesigner(doc, image, >>>> page); >>>> sigDesigner.xAxis(100).yAxis(200).zoom(-50); >>>> PDVisibleSigProperties visibleSigProp = new PDVisibleSigProperties(); >>>> visibleSigProp.setPdVisibleSignature(sigDesigner).signatureReason("Test"); >>>> >>>> // this should replace visibleSigProp.buildSignature() >>>> PDFTemplateBuilder builder = new ExtSigBuilder(); >>>> PDFTemplateCreator creator = new PDFTemplateCreator(builder); >>>> visibleSigProp.setVisibleSignature(creator.buildPDF(visibleSigProp.getPdVisibleSignature())); >>>> >>>> >>>> // add VisibleSignature options to general signature options >>>> SignatureOptions sigOpts = new SignatureOptions(); >>>> sigOpts.setVisualSignature(visibleSigProp); >>>> sigOpts.setPage(0); >>>> >>>> >>>> // add signature options to signature >>>> doc.addSignature(sigDic, mySigner, sigOpts ); >>>> >>>> The class used to modify the behavior was: >>>> >>>> // Test -> should write "Hello" on the top-left corner (adapted from >>>> stackoverflow - String to COSName) >>>> public class ExtSigBuilder extends PDVisibleSigBuilder >>>> { >>>> String fontName; >>>> >>>> @Override >>>> public void createImageForm(PDResources imageFormResources, >>>> PDResources innerFormResource, >>>> PDStream imageFormStream, PDRectangle formrect, >>>> AffineTransform affineTransform, PDImageXObject img) >>>> throws IOException >>>> { >>>> super.createImageForm(imageFormResources, innerFormResource, >>>> imageFormStream, formrect, affineTransform, img); >>>> >>>> PDFont font = PDType1Font.HELVETICA; >>>> fontName = >>>> getStructure().getImageForm().getResources().add(font).getName(); >>>> } >>>> @Override >>>> public void injectAppearanceStreams(PDStream holderFormStream, >>>> PDStream innterFormStream, PDStream imageFormStream, >>>> COSName imageObjectName, COSName imageName, COSName >>>> innerFormName, PDVisibleSignDesigner properties) >>>> throws IOException >>>> { >>>> super.injectAppearanceStreams(holderFormStream, >>>> innterFormStream, imageFormStream, imageObjectName, imageName, >>>> innerFormName, properties); >>>> >>>> String imgFormComment = "q " + 100 + " 0 0 50 0 0 cm /" + >>>> imageName + " Do Q\n"; >>>> String text = "BT /" + fontName + " 6 Tf (Hello) Tj ET\n"; >>>> appendRawCommands(getStructure().getImageFormStream().createOutputStream(), >>>> imgFormComment + text); >>>> } >>>> } >>>> When I don't use ExtSigBuilder or comment the 'appendRawCommands', I get >>>> this: link >>>> But when I try to add this visible layer, the retangle becomes blank: link >>>> You said that there is no example, but can I achieve it if I'm willing to >>>> get dirty and use low level API's? Is there a recommended architecture I >>>> can follow to merge this on the project latter? >>> it's possible. One way to approach it is to create a visible signature with >>> the text in Adobe Acrobat and inspect and replicate the sppearance stream. >>> >>> BR >>> Maruan >>> >>>> Thanks in advance, >>>> >>>> Diego Azevedo >>>> >>>> On 29/07/2016 13:54, Tilman Hausherr wrote: >>>>> Am 29.07.2016 um 15:36 schrieb Diego Azevedo: >>>>>> Hello all, >>>>>> >>>>>> I'm trying to add a visible signature to a pdf document -> So far, no >>>>>> problems >>>>>> But I've seen documents that add a text layer above the visible >>>>>> signature that shows some of the signature details, such as location, >>>>>> reason, date, the validity of the signature (and that's updated if, for >>>>>> example, you trust a root certificate). I'd like to add these features, >>>>>> but I didn't find any example on the SVN directory. >>>>>> >>>>>> The closest I got was this stackoverflow question >>>>>> <http://stackoverflow.com/questions/27926407/visual-signature-with-pdfbox-1-8-8>, >>>>>> but that did not work for me (I changed the methods signatures to the >>>>>> updated API, but all I got was a blank rectangle). >>>>> The text layer isn't supported, or rather, there is no example for it. >>>>> >>>>> What you could do is to post your source code and upload the result PDF >>>>> somewhere, I'll see if I can find something. >>>>> >>>>> Btw a known problem is signing rotated pages (there's an SO issue about >>>>> that too), so make sure your page isn't. >>>>> >>>>> Tilman >>>>> >>>>> --------------------------------------------------------------------- >>>>> To unsubscribe, e-mail: [email protected] >>>>> For additional commands, e-mail: [email protected] >>>>> >>>> -- >>>> _______________________________________________ >>>> >>>> <logo-e-sec2.png>Diego Azevedo >>>> Desenvolvedor >>>> E-SEC Segurança Digital >>>> www.esec.com.br >>>> 61 3323-4410 >>>> >>>> >>>> Os dados transmitidos, incluindo quaisquer anexos, são destinados apenas >>>> para a pessoa ou entidade ao qual está endereçada e pode conter material >>>> confidencial e/ou privilegiado. 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If you >>>> received this in error, please contact the sender and delete the material >>>> from any computer >>>> >>> >>> --------------------------------------------------------------------- >>> To unsubscribe, e-mail: [email protected] >>> For additional commands, e-mail: [email protected] >>> >> >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: [email protected] >> For additional commands, e-mail: [email protected] >> > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [email protected] > For additional commands, e-mail: [email protected] > --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
