https://bugs.kde.org/show_bug.cgi?id=440463
Bug ID: 440463
Summary: Touchpad zoom-scrolling on Wayland is too fast
Product: kstars
Version: 3.5.3
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: mutla...@ikarustech.com
Reporter: n...@kde.org
Target Milestone: ---
In a Wayland session, KStars zooms the view too quickly when using touchpad
two-finger scrolling.
The zooming speed is perfectly fine in the X11 session, and using an actual
mouse with a scroll wheel behaves fine in both the X11 and Wayland sessions.
The problem is only seen with touchpad scrolling in the Wayland session.
Since the view does not zoom smoothly but rather jumps from one zoom level to
another, and mousewheel scrolling works on both platforms, I suspect the issue
is how the zoom code transforms the scroll delta into a number of scroll
ticks/zoom steps. Qt is known to handle touchpad scrolling differently on
Wayland compared to X11.
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