[poppler] Patch in progress - looking for annotation related unit test data

Patrick Golden ptgolden0 at gmail.com
Wed Feb 21 02:15:34 UTC 2018

Hi Tobias,

Author of the email you cited, here. Also note that there is an open bug 
on the tracker to add individual annotation rendering to the glib 
bindings [1]. I've been patching libpoppler locally in my own project 
using something very much like the code in there [2].

For my own purposes, I've been developing a series of annotation test 
cases using various PDF readers, including Evince, iAnnotate (an iOS 
application), and PDF Studio Pro (a JDK application). The latter two are 
not free, but I would be happy to generate more examples using things 
like stamps, lines, shapes, and ink.

[1] https://bugs.freedesktop.org/show_bug.cgi?id=83643

On 02/16/2018 05:24 AM, Tobias Deiminger wrote:

> Do you have PDF document(s) around that contain various types of 
> annotations, for the sake of unit testing? (already checked 
> git://git.freedesktop.org/git/poppler/test, no hit)
> I'm asking because I'm working on a poppler patch and wanted to add unit 
> tests before submitting it on bugzilla. The patch will add support for 
> rendering individual annotations (as requested in [1]). The first 
> version will have a QT5 API as
> QImage Poppler::Annotation::renderToImage(double hDPI, double vDPI)
> An obvious way to test this would be to render annotations from a test 
> document and compare the resulting QImages with golden bitmaps. Do you 
> think such a test will be maintainable? Rendering results might slightly 
> change with algorithm evolution in splash/arthur/cairo versions, so the 
> golden bitmap could need updates from time to time.
> If I had to create test documents on my own, which authoring tools would 
> you use? There's
> -Poppler of course, but it lacks some annotation related features like 
> saving appearance streams for self-created annotations into the PDF
> -Adobe tools are often considered as reference, but I had to buy them first
> -maybe the pdfcomment TeX package? No idea how complete the standard is 
> implemented there...
> Best
> Tobias
> [1] https://lists.freedesktop.org/archives/poppler/2017-April/012165.html
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