Is there any example on how to approach this? I've been struggling with this
for a few hours but I've no idea how to create this XObject, and the examples
in the project never use them.
On 29/08/2012, at 17:00, Leonard Rosenthol <[email protected]> wrote:
> Some PDF viewers (eg. anything back on Apple’s Quartz technology) will only
> display annotations that have pre-generated appearances. Others (such as
> Acrobat or Adobe Reader) can/will create them on the fly. The PDF standard
> (ISO 32000-1:2008) does not require an appearance (though other standards,
> such as PDF/A, do).
>
> So if you want full compatibility – create it.
>
> How to do it? Create a Form XObject and then associate it with the AP key of
> the annotations’ dictionary.
>
> Leonard
>
> From: Ismael Schellemberg [mailto:[email protected]]
> Sent: Wednesday, August 29, 2012 3:39 PM
> To: Leonard Rosenthol
> Subject: Re: [Podofo-users] problem creating stamp annotation
>
> I wasn't aware there had to be any writing of an appearance … I don't for any
> type of annotation and the rest show fine, except this one, and this code
> generates a stamp that some viewers can interpret correctly
>
> Could you please explain how I should do that?
>
>
>
> On 29/08/2012, at 16:28, Leonard Rosenthol <[email protected]> wrote:
>
>
> Where are you actually writing the appearance for the stamp?
>
> From: Ismael Schellemberg [mailto:[email protected]]
> Sent: Wednesday, August 29, 2012 3:10 PM
> To: [email protected]
> Subject: [Podofo-users] problem creating stamp annotation
>
> Hello! I'm having a problem when creating stamp annotations, they don't
> display properly on some viewers (ie: Mac's Preview app, iPad's Adobe Reader
> app), but displays correctly on other viewers (Mac's Adobe Acrobat Pro app,
> iPad's PDFExpert app)
>
> This is the code I use to create a stamp annotation:
>
> PdfRect pdfRect(100.0, 100.0, 100.0, 100.0); // The real values are passed as
> a variable, but the positioning isn't a problem here
>
> PdfAnnotation *annot = page->CreateAnnotation(ePdfAnnotation_Stamp, pdfRect);
> annot->GetObject()->GetDictionary().AddKey(PdfName("Name"),
> PdfName("SBApproved"));
>
>
> // these are new things I tried to add when comparing the annotation
> structure with a stamp created in another app, but still no effect
>
> pdf_int64 rotate = 0;
> annot->GetObject()->GetDictionary().AddKey(PdfName("Rotate"),
> PdfVariant(rotate));
> annot->SetFlags(4);
>
>
>
>
> Any help is appreciated
> Thanks in advance!
> Ismael
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