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DeeJanuz--frametop/docs/controller-click-stability.md
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DeeJanuzandClaude Opus 5.5 540d8c425c Click stability: only a hand controller's press starts it
The 3D mouse drives SteamVR's laser through the ft_pointer virtual
controller, so its events reach the screens the same way a controller's
do. The filter held every press, which turned the mouse's short drags
(selecting a character or two, nudging a slider) into clicks. Mark
button events from hand controllers and start the filter only on those.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-01 23:19:58 -06:00

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# Controller desktop click stability
Trigger presses reach KDE immediately, but controller motion within 8 logical
pixels of the press stays at that position until release. Releasing without a motion outside this
zone delivers the click at the original position, even if the hand moved during
release. Moving outside the zone begins a normal drag immediately; returning to
the zone does not turn it back into a click. There is no hold-duration timer.
This filters overlay pointer content events on desktop monitors only, and only
presses from hand controllers start it. The 3D mouse (whose laser comes from the
`ft_pointer` virtual controller), SteamVR UI, separate screen grab bars and
floating-app title-bar carrying are unaffected. Multi-button gestures keep their
existing behavior. A motion onto another desktop monitor starts a drag;
cross-monitor motion is not stabilized.
CLI (runtime preferences, reset to 8 on desktop restart):
```sh
input/ft-clickctl status
input/ft-clickctl threshold 8
input/ft-clickctl threshold 0 # disable without a restart
```
Thresholds are 0–64 logical pixels, normalized to each panel's KDE scale.
Status reports held state, suppressed motions, stabilized clicks and drags.
Changing the threshold while a controller button is held is refused.
This is a separate contribution from desktop mouse/controller ownership. Its
hardware validation must check small controls, intentional text selection,
long presses, cross-monitor dragging and simultaneous mouse use. The existing
renderer laser remains tracked; this change stabilizes desktop input rather
than smoothing the visual laser. Default threshold is a starting point to test.
Run `scripts/test-controller-click.sh` for the isolated gesture-state tests.