Greg Pomerantz
9a1654136f
open_viewer never shows 'Loading…' anymore:
1. full-res LRU cache hit (8 entries / 64 MP of RGBA bytes) -> the
image is shown in the same frame as the tap (decode already done
by idle prefetch or a previous view); the ~3 ms GPU upload is the
grid's proven hitch-free path (slint::Image is !Send, so the
cache holds bytes and uploads on tap);
2. else the tapped cell's THUMBNAIL (already a GPU texture, same
aspect) is shown instantly and the full decode (urgent: bypasses
the idle budget) swaps in silently on arrival - same aspect, so
s is rescaled by old/new (Input::rebase_content), tx/ty (viewer
px) stay put: identical bounds, one content change, any
pan/zoom/pinch the user did on the thumb is preserved;
3. only if the cell has no painted thumb either is there a black
frame (ViewerUi.waiting names the path the viewer waits on; a
failed decode prints an error only for that path).
Tick step 4c (prefetch_full): when the viewport is stable, the
viewer is closed and the thumb pipeline is caught up (inflight
empty after FILL - during fast scrolling it stays non-empty, so
prefetch only starts once scrolling is done), decode + cache one
center-out visible image per tick, max 2 in flight. In-flight
decodes are NOT cancelled by scrolling: results still land in the
cache (that IS the value). All caches clear on set_list / world
reset.
Verified on the emulator: cache-hit tap '(full 1200x1600 cached)'
instant; uncached tap '(thumb 159x400 up, full in flight)' ->
'(swapped in)' 137 ms later; corrupt file -> error text, no splash.
New unit test: rebase_content_preserves_viewer_mapping (34 pass).
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| docs/BUGS | ||
| scripts | ||
| src | ||
| vendor | ||
| .gitignore | ||
| build.rs | ||
| Cargo.lock | ||
| Cargo.toml | ||
| HANDOFF.md | ||
| LICENSE | ||
| README.md | ||
gallery
A high-performance image gallery for Android (primary), Linux and macOS — Rust + Slint 1.18.
Status: M1 (metadata scan + DB) done. See HANDOFF.md — the development hand-off with the full plan: architecture, thumbnail pipeline, milestones M1–M7, Slint gotchas, permission flow, and performance targets. Next: M2 (thumbnail engine).
Build
./scripts/build.sh debug # debug x86_64 APK + install on emulator
./scripts/build.sh # release x86_64 (emulator)
./scripts/build.sh aarch64 # release aarch64 (device)
cargo run # desktop (Linux needs libfontconfig1 + pkg-config)
Requires: Rust (rustup), cargo-apk2, Android SDK + NDK 27 (see HANDOFF.md §3
for exact paths/env).
License
GPL-3.0 (see LICENSE). Built on Slint, used under the Slint royalty-free license for proprietary apps (see HANDOFF.md §10.4).