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Merged
AlanRockefeller merged 2 commits into from
Feb 9, 2026
Merged

Version 1.5.6 #41

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9307d38
Improve navigation responsiveness & harden shutdown; add cache timing…
AlanRockefeller Feb 9, 2026
5e59b92
Changelog update
AlanRockefeller Feb 9, 2026
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14 changes: 13 additions & 1 deletion ChangeLog.md
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Expand Up @@ -2,7 +2,19 @@

Todo: Make it work on Linux / Mac. Create Windows .exe. Write better documentation / help. Add splash screen / icon. Fix raw image support.

# Changelog
## 1.5.6 (2026-02-08)

#### Performance
- Debounced `metadataChanged` / `highlightStateChanged` emissions to reduce UI overhead during rapid navigation.
- Increased default prefetch radius to **6** and raised prefetch worker cap to **8** for smoother fast navigation.
- Added optional `[DBGCACHE]` timing logs for image request/decode and UI refresh paths when `debug_cache` is enabled.

#### Stability
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AlanRockefeller marked this conversation as resolved.
- Refactored shutdown into `shutdown_qt()` (main thread) and `shutdown_nonqt()` (background-safe), wired from `aboutToQuit` in `main()` with a timeout/stacks fallback to diagnose hangs.
- Added cooperative cancellation and `cancel_futures=True` shutdown behavior to both main image and thumbnail prefetchers.
- Ensured thumbnail “ready” callbacks run on the Qt thread when available; hardened cancellation/callback ordering to avoid deadlocks and worker-thread Qt warnings.
- Enabled Ctrl-C termination via SIGINT handling and a periodic Qt timer to allow Python signal processing.


## 1.5.5 (2026-02-07)

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