Bug 498576

SUMMARY
I have an external touchpad with gesture support. When I try to use the pinch to zoom, my fingers need to be at a 45-degree angle relative to each other for it to trigger a pinch-to-zoom gesture.

It seems very sensitive to the exact angle, since trying to pinch to zoom organically always ends up failing after 1 or 2 successful *pinches*.

STEPS TO REPRODUCE
1. Have a trackpad
2. Open up Gwenview or Firefox in the Wayland session
3. Try to pinch-to-zoom any image / webpage multiple times
4. Notice that it doesn't consistently zoom.

OBSERVED RESULT
Doing the same pinch to zoom gesture, at a slightly off angle, gives inconsistent results. Sometimes it evens zooms out slightly when trying to zoom! Other time, it registers the pinch-to-zoom as a scroll instead.

EXPECTED RESULT
I expect the pinch-to-zoom functionality to work pretty much as smoothly as pinch-to-zoom in Android or iOS. Plasma's pinch-to-zoom is personally challenging to consistently trigger.

SOFTWARE/OS VERSIONS
Operating System: openSUSE Tumbleweed 20250109
KDE Plasma Version: 6.2.5
KDE Frameworks Version: 6.9.0
Qt Version: 6.8.1
Kernel Version: 6.12.8-1-default (64-bit)
Graphics Platform: Wayland
Processors: 16 × AMD Ryzen 7 7800X3D 8-Core Processor
Memory: 31.0 GiB of RAM
Graphics Processor: AMD Radeon RX 7900 XT

ADDITIONAL INFORMATION
The touchpad in question is an Apple Magic Trackpad Type-C version