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
[2]
https://github.com/ptgolden/pdf2oac-js/blob/775c86b317c244bb0996f911fadca546b4545d5f/libpoppler/patches/0001-Add-poppler_annot_render.patch
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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