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- collect mouse button events from /dev/input/event* with O_NONBLOCK reads (20ms polling) instead of blocking fs.createReadStream - blocking reads on evdev char devices park libuv threadpool threads (4 by default); with several devices open and the mouse idle, the whole pool starves and the recording save hangs indefinitely - evdev collection only on Linux + Hyprland sessions, avoiding double-counted clicks where the uiohook X11 path works - requires the user in the "input" group for /dev/input access Tested on: AMD Lucienne, Hyprland 0.56.2, XDPH 1.4.1, PipeWire 1.6.8 Relates to: webadderallorg#808, webadderallorg#863, webadderallorg#891
…rsor-telemetry # Conflicts: # electron/ipc/cursor/interaction.ts # src/hooks/useScreenRecorder.test.ts
- evdev button capture reads with O_NONBLOCK + 20ms polling instead of blocking fs.createReadStream streams: blocking reads park libuv threadpool threads (4 by default) and starve the pool when the mouse is idle, hanging the recording save indefinitely - capture only on Linux + Hyprland sessions (guard), avoiding double-counted clicks where the uiohook X11 path works - [REC-DEBUG] lifecycle logging for diagnostics Tested on: AMD Lucienne, Hyprland 0.56.2 — save completes immediately, clicks captured, cursor telemetry flowing end-to-end.
- evdev button capture reads with O_NONBLOCK + 20ms polling instead of blocking fs.createReadStream streams: blocking reads park libuv threadpool threads (4 by default) and starve the pool when the mouse is idle, hanging the recording save indefinitely - evdev collection only on Linux + Hyprland sessions (guard), avoiding double-counted clicks where the uiohook X11 path works - [REC-DEBUG] lifecycle logging for diagnostics Tested on: AMD Lucienne, Hyprland 0.56.2 — save completes immediately, clicks captured and rendered, telemetry flowing end-to-end.
On Hyprland/Wayland the recording flow ran the countdown BEFORE the getDisplayMedia request — the portal picker blocked getUserMedia, so the video started late while cursor telemetry had already started, producing desynchronized cursor playback (and a frozen lead-in for the duration of the picker dialog). - Linux flow: request screen capture (portal picker) BEFORE the countdown - Cursor telemetry now starts together with the video capture - HYPRLAND_CURSOR_MEDIA_OFFSET_MS: 300 -> 0 (the calibration compensated for the wrong order; with capture-first it is no longer needed) Tested on: AMD Lucienne, Hyprland 0.56.2 — recording, save, editor and cursor/click sync all working in a single natural launch.
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Navigate logical layers of code changes, visualize relationships, and explore their blast radius. No actionable comments were generated in the recent review. 🎉 ℹ️ Recent review info⚙️ Run configurationConfiguration used: Repository: webadderallorg/Recordly/.coderabbit.yaml Review profile: ASSERTIVE Plan: Advanced Run ID: 📒 Files selected for processing (5)
Included review availability: Your plan provides up to 10 included reviews per hour; 8 remain after this review. 📝 WalkthroughWalkthroughThe change adds shared Linux window-system detection, Hyprland cursor and evdev button capture, and recording-start timestamp handoff. Linux portal countdown timing also changes, and recording IPC returns cursor-overlay availability. ChangesLinux Cursor Capture and Recording
Priority: ➖ Normal Estimated code review effort: 4 (Complex) | ~45 minutes Change: Bug fix Sequence Diagram(s)sequenceDiagram
participant MediaRecorder
participant Renderer
participant Preload
participant RecordingIPC
participant HyprlandProvider
participant HyprlandSocket
MediaRecorder->>Renderer: Emit start event with timeline boundary
Renderer->>Preload: setRecordingState(true, timeline boundary)
Preload->>RecordingIPC: Invoke set-recording-state
RecordingIPC->>HyprlandProvider: Start cursor provider
HyprlandProvider->>HyprlandSocket: Query cursor position
HyprlandSocket-->>HyprlandProvider: Return cursor position
HyprlandProvider-->>RecordingIPC: Return provider start result
RecordingIPC-->>Preload: Return cursorOverlayAvailable
Preload-->>Renderer: Resolve recording state
Merge Risk: 🔵 Low · up to Some mixed-device or reconnecting-mouse recordings can miss clicks used for automatic zoom. The affected cases are bounded, so the change is mergeable with owner awareness and follow-up. 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
✨ Finishing Touches🧪 Generate unit tests (beta)
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Actionable comments posted: 4
- 🪄 Fix CodeRabbit comments on this PR
🤖 Prompt to fix review comments
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only still-valid issues, skip the rest with a brief reason, keep changes
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Inline comments:
In `@electron/ipc/cursor/hyprland.ts`:
- Around line 288-291: Pass the resolved platform from the capture guard to
getHyprlandRequestSocketPath instead of letting it default to process.platform.
Reuse one resolved platform value for both the Linux check and the socket-path
lookup so injected platform options work consistently.
- Line 301: Increase the evdev read buffer in the polling loop and continue
reading each device while a read fills the buffer; stop draining when a read
returns fewer bytes than the buffer capacity. Preserve the existing event
decoding and button-handler behavior for every chunk.
In `@electron/ipc/cursor/interaction.ts`:
- Around line 261-269: Update startInteractionCapture so it registers uiohook
mousedown and mouseup listeners only when no evdev device was opened; retain
those listeners as the fallback when every evdev open fails with EACCES, and
keep the evdev callbacks active when capture succeeds.
In `@electron/ipc/register/sourceMapping.ts`:
- Line 6: Update isLikelyLinuxWaylandSession to detect Wayland from
XDG_SESSION_TYPE and WAYLAND_DISPLAY rather than relying on the Ozone backend:
return true for a Wayland session, false for an X11 session, and otherwise use
WAYLAND_DISPLAY as the fallback so unmatched screen sources retain the portal
sentinel.
After applying the fix, consider running `coderabbit review --agent` for local
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ℹ️ Review info
⚙️ Run configuration
Configuration used: Repository: webadderallorg/Recordly/.coderabbit.yaml
Review profile: ASSERTIVE
Plan: Advanced
Run ID: 45285936-4292-4398-8b75-81f549021569
📒 Files selected for processing (14)
electron/electron-env.d.tselectron/gpuSwitches.tselectron/ipc/cursor/hyprland.test.tselectron/ipc/cursor/hyprland.tselectron/ipc/cursor/interaction.tselectron/ipc/cursor/telemetry.tselectron/ipc/register/recording.tselectron/ipc/register/sourceMapping.tselectron/ipc/state.tselectron/linuxWindowSystem.test.tselectron/linuxWindowSystem.tselectron/preload.tssrc/hooks/useScreenRecorder.test.tssrc/hooks/useScreenRecorder.ts
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Problem
On Hyprland/Wayland, Electron's X11 cursor APIs can return (0, 0), so Recordly records a stationary cursor and misses the click positions needed for automatic zoom. A real screen recording on Hyprland before this change had 341/371 cursor samples at (0, 0) and no click events.
Change
Integrates the Hyprland cursor telemetry approach from #904 onto current
main, resolving the conflicts in recording registration and screen recorder setup. Hyprland IPC provides cursor coordinates; evdev provides physical mouse button events. The follow-up fixes keep evdev active if X11/uiohook initialization fails, serialize evdev reads, buffer partial input events, preserve capability bits above 32 bits, and avoid a duplicate countdown for browser recordings. Corresponding unit tests cover the cursor, click, and countdown behavior.Credit: @AlexSilva-dev for the original implementation in #904. A focused patch against that PR is also available at AlexSilva-dev#1.
Validation
Physical click telemetry requires read access to the relevant
/dev/input/event*mouse device. In the validation environment, a temporary ACL on the mouse device was used; cursor positioning itself works through Hyprland IPC.Summary by CodeRabbit