https://bugs.kde.org/show_bug.cgi?id=511029
David Edmundson <[email protected]> changed: What |Removed |Added ---------------------------------------------------------------------------- Latest Commit| |https://invent.kde.org/plas | |ma/krdp/-/commit/433babfefc | |d28bf186e5d184ad8450dcd0f52 | |157 Resolution|--- |FIXED Status|ASSIGNED |RESOLVED --- Comment #5 from David Edmundson <[email protected]> --- Git commit 433babfefcd28bf186e5d184ad8450dcd0f52157 by David Edmundson, on behalf of reali es. Committed on 24/02/2026 at 13:13. Pushed by davidedmundson into branch 'master'. Fix scroll wheel for RDP clients sending high-resolution or zero-position events ## Summary Some RDP clients, notably Microsoft Remote Desktop for Mac, send wheel events with: 1. **(0,0) as the mouse position** — MRD omits cursor coordinates for wheel events 2. **Sub-120 axis rotation values** — macOS smooth scrolling sends high-resolution deltas (1-22 per event) instead of the standard 120 per wheel notch This caused scrolling to be completely non-functional with MRD on both the Portal and Plasma screencast session paths. ### Changes - **InputHandler.cpp**: Track last known mouse position from move events and substitute it when a wheel event arrives with a null position - **PortalSession.cpp**: Switch from `NotifyPointerAxisDiscrete` (integer steps, truncates sub-120 values to 0) to `NotifyPointerAxis` (smooth scroll, preserves sub-notch precision) - **PlasmaScreencastV1Session.cpp**: Fix `wl_fixed_t` conversion using `wl_fixed_from_double()` (was passing raw int, making values ~256x smaller than intended) - Both session paths now convert Qt angleDelta (1/8-degree units) to degrees by dividing by 8, producing 15.0 per standard notch — matching libinput's wheel axis convention ### Test plan - [x] Connect with Microsoft Remote Desktop for Mac — scrolling should work in both directions with natural speed - [x] Connect with xfreerdp/standard RDP client — verify scrolling still works correctly (standard 120-per-notch values) - [ ] Test horizontal scrolling if client supports it - [x] Verify mouse position is correct during scroll (not jumping to top-left corner) M +31 -4 src/InputHandler.cpp M +7 -3 src/PlasmaScreencastV1Session.cpp M +6 -7 src/PortalSession.cpp https://invent.kde.org/plasma/krdp/-/commit/433babfefcd28bf186e5d184ad8450dcd0f52157 -- You are receiving this mail because: You are watching all bug changes.
