Version: 3.1.2 When I zoom in and out of an image using Two-finger-scrolling on the touchpad, this goes way too fast/much too sensitive, so it is almost impossible to get to a desired magnification. Please have a look at https://bugs.kde.org/show_bug.cgi?id=377128 as this one seems to be almost the same problem. (I reported a similar problem for gwenview: https://bugs.kde.org/show_bug.cgi?id=378584)
Hi Thomas, Thanks for your report. It's a bit weird, though, that the touchpad scroll emulation doesn't seem to keep track of QWheelEvent::DefaultDeltasPerStep. It sounds almost as if this should be fixed in Qt itself.
Unfortunately, I'm not into the details of scrolling event handling. All I know is that is seems to work e.g. in scribus but doesn't e.g. in gwenview. I don't know whether they have special code treating the scrolling event in scribus, but from the other bug report it seems they've added some special code to okular. Anyway, I agree that if it's possible to fix it upstream, it should be done there, but I wouldn't know what exactly to report there.
Git commit 390f8d72a559575e7179287acc6d238c7b36a3bb by Boudewijn Rempt. Committed on 20/04/2017 at 07:09. Pushed by rempt into branch 'master'. M +15 -4 libs/ui/input/kis_input_manager.cpp M +2 -0 libs/ui/input/kis_input_manager_p.h https://commits.kde.org/krita/390f8d72a559575e7179287acc6d238c7b36a3bb