Two cases, both from signals LiveKit already gives:
Shared window closed → the track ends (ended on the MediaStreamTrack) but the tile can linger black. Stop the share cleanly and emit a host-visible notice (io.lotus.call_state flag or a dedicated action) so cinny can toast "Screenshare ended — the window was closed".
Still sharing? after 30 min of sharing with no other participants in the call (everyone left) → one notice, once. Never while others are present.
Host side (cinny) renders the toast; fork side detects.
Two cases, both from signals LiveKit already gives:
1. **Shared window closed** → the track ends (`ended` on the MediaStreamTrack) but the tile can linger black. Stop the share cleanly and emit a host-visible notice (`io.lotus.call_state` flag or a dedicated action) so cinny can toast "Screenshare ended — the window was closed".
2. **Still sharing?** after 30 min of sharing with **no other participants in the call** (everyone left) → one notice, once. Never while others are present.
Host side (cinny) renders the toast; fork side detects.
jared
added this to the Features 2026-Q4 milestone 2026-09-17 16:26:16 -04:00
Done — fork e7c27dd8 + 9f472fd7 (in 0.25.0-lotus.12), cinny 2bed70d3.
Fork lotusScreenshareWatch.ts watches the local screenshare publication and sends io.lotus.screenshare_notice { kind } at most once per share each:
ended — the MediaStreamTrack ended (window closed). LiveKit already unpublishes the share so nothing lingers; because its handler runs first and unpublishes, the notice is also derived from readyState === "ended" on LocalTrackUnpublished.
no-frames — the track has been muted (minimised/occluded window) for 15 s straight.
alone — 30 min of sharing with remoteParticipants.size === 0, checked once a minute; never while anyone else is present.
Cinny toasts them: "Screen sharing stopped — the shared window was closed.", "Your screen share is showing nothing — the shared window may be minimised or hidden.", and a sticky "Still sharing? …". 5 unit tests (fake timers); end to end: sharing "Entire screen", stopping the source → the host toast appears.
Done — fork e7c27dd8 + 9f472fd7 (in 0.25.0-lotus.12), cinny 2bed70d3.
Fork `lotusScreenshareWatch.ts` watches the local screenshare publication and sends `io.lotus.screenshare_notice { kind }` at most once per share each:
- `ended` — the MediaStreamTrack ended (window closed). LiveKit already unpublishes the share so nothing lingers; because its handler runs first and unpublishes, the notice is also derived from `readyState === "ended"` on `LocalTrackUnpublished`.
- `no-frames` — the track has been muted (minimised/occluded window) for 15 s straight.
- `alone` — 30 min of sharing with `remoteParticipants.size === 0`, checked once a minute; never while anyone else is present.
Cinny toasts them: "Screen sharing stopped — the shared window was closed.", "Your screen share is showing nothing — the shared window may be minimised or hidden.", and a sticky "Still sharing? …". 5 unit tests (fake timers); end to end: sharing "Entire screen", stopping the source → the host toast appears.
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Two cases, both from signals LiveKit already gives:
endedon the MediaStreamTrack) but the tile can linger black. Stop the share cleanly and emit a host-visible notice (io.lotus.call_stateflag or a dedicated action) so cinny can toast "Screenshare ended — the window was closed".Host side (cinny) renders the toast; fork side detects.
Done — fork
e7c27dd8+9f472fd7(in 0.25.0-lotus.12), cinny 2bed70d3.Fork
lotusScreenshareWatch.tswatches the local screenshare publication and sendsio.lotus.screenshare_notice { kind }at most once per share each:ended— the MediaStreamTrack ended (window closed). LiveKit already unpublishes the share so nothing lingers; because its handler runs first and unpublishes, the notice is also derived fromreadyState === "ended"onLocalTrackUnpublished.no-frames— the track has been muted (minimised/occluded window) for 15 s straight.alone— 30 min of sharing withremoteParticipants.size === 0, checked once a minute; never while anyone else is present.Cinny toasts them: "Screen sharing stopped — the shared window was closed.", "Your screen share is showing nothing — the shared window may be minimised or hidden.", and a sticky "Still sharing? …". 5 unit tests (fake timers); end to end: sharing "Entire screen", stopping the source → the host toast appears.