https://bugs.kde.org/show_bug.cgi?id=476047
Bug ID: 476047
Summary: Ctrl+Meta zooming broken with touchpads
Classification: Plasma
Product: kwin
Version: 5.27.9
Platform: Archlinux
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: wayland-generic
Assignee: kwin-bugs-n...@kde.org
Reporter: micraf...@gmail.com
Target Milestone: ---
SUMMARY
When using a "pixel scrolling"[0] touchpad zooming in/magnifying your desktop
is pretty much broken
STEPS TO REPRODUCE
1. Get a touchpad with pixel scrolling, or a mouse with high-res scrolling
2. Hold Ctrl+Meta
3. Try zooming in
OBSERVED RESULT
If you scroll slowly it does not zoom in. You have to scroll really fast, to
the point where you pretty much have no control anymore.
I'm pretty sure this is caused by ignoring the distance value of the scroll
events, I've seen very similar bug in other apps before.
I don't know if this is caused by running on wayland, but it didn't happen in
the past when I was on xorg.
EXPECTED RESULT
It should zoom in "pixel by pixel", just like it does for scrolling in
applications.
SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 5.27.8
KDE Frameworks Version: 5.111.0
Qt Version: 5.15.11
Kernel Version: 6.1.59-1-lts (64-bit)
Graphics Platform: Wayland
Processors: 8 × AMD Ryzen 7 4700U with Radeon Graphics
Memory: 15.0 GiB of RAM
Graphics Processor: AMD Radeon Graphics
Manufacturer: HP
Product Name: HP ENVY x360 Convertible 15-ee0xxx
System Version: Type1ProductConfigId
[0]
https://community.kde.org/Get_Involved/Design/Frequently_Discussed_Topics#Names_of_different_scrolling_effects
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