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. É proibida qualquer revisão, retransmissão, > disseminação ou outro uso desta informação, ou a tomada de qualquer ação com > base na confiança, por pessoas ou empresas que não o destinatário, e qualquer > responsabilidade daí decorrente é negada. Se você recebeu por engano, favor > contatar o remetente e apague o material de qualquer computador > > The information transmitted, including any attachments, is intended only for > the person or entity to which it is addressed and may contain confidential > and/or privileged material. Any review, retransmission, dissemination or > other use of, or taking of any action in reliance upon, this information by > persons or entities other than the intended recipient is prohibited, and all > liability arising therefrom is disclaimed. 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]
