Created attachment 107307 [details] screenshot showing the problem I have a small HD screen and i run KDE with QT_SCREEN_SCALE_FACTORS set to 1.5. This makes the icons in the Okular annotation toolbar blurry. See the attached screenshot.
Giving it seconds thoughts, this may be because Debian testing does not have the very latest Qt, Frameworks, Plasma, whatever. So I'd be happy if people with a more up-to-date setup could confirm the problem.
Can confirm annotation toolbar being blurry, both with integer (2x) and non-integer (1.5x) scaling. Setup: current Tumbleweed w/ Qt 5.9.1 Okular branches tested: master (0c4c2ddb), arcpatch-D6268, gsoc2017_hidpi_support (5c08d3f8)
Does this patch improve things? https://phabricator.kde.org/D6268
I does.
HiDPI support landed today with https://cgit.kde.org/okular.git/commit/?id=ecc1141e0293e1a30e0f8787d86dcc6309ffb0c0