Am 17.02.2022 um 20:20 schrieb Tilman Hausherr:
I looked at that content stream again, it seems you're using a pattern
"color". IIRC there's a PDFBox weakness with patterns that are very
small.
See also the first file from
https://github.com/mozilla/pdf.js/issues/9627
Tilman
Tilman
Am 17.02.2022 um 13:04 schrieb Stefan Sauerer:
Hi Tilman,
so played around a liitle bit with the PDFDebugger tool (in 2.0.25 &
3.0 alpha).
It is interesting, that the watermark gets displayed at a zoom level
of about 200%. The font itself is very big. So I think, it has
nothing to do with some sort of "rendering-optimization" for small
objects. For default zoom level (100%) the watermark is not shown at
all.
(And there are no interesting logs - just "Parsing took xx ms")
So I increased the quality of the rendering by using a much higher
dpi value - and there it is. For a high dpi, the watermark gets
rendered onto the image (we are talking about a resolution of
1488x2104) Reducing the rendering quality to a resolution (let's say
744x1052) the watermark gets not rendered.
How can that be? Why does the watermark get discarded for lower quality?
Thanks in advance & Kind regards from the CAS Campus
Stefan Sauerer
Software Engineer DevelopmentCenter SmartApp Factory
CAS Software AG· CAS-Weg 1 -5 · 76131 Karlsruhe, Germany · Phone: +49
721-9638-0
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