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gmp e019a950b1 gtauri: Tauri v2 gallery harness WORKING on emulator 
Chromium owns scroll/compositor/lazy-load/image-cache; Rust owns
scan/SQLite/thumbnail-decode behind a gallery:// custom protocol.

Hard-won gotchas (see in-code comments):
- Android: no native custom-scheme support → wry rewrites the URL to
  http://gallery.localhost/... (custom_protocol_workaround). The JS
  MUST request that form; the handler receives the reverted
  gallery://localhost/... and must strip the authority.
- tauri_build::build() in build.rs must run UNCONDITIONALLY (build
  scripts run on the host: a cfg(target_os) gate silently disables it,
  which skips the rustc-cfg=mobile emission → no mobile_entry_point →
  .so with no JNI symbols → UnsatisfiedLinkError).
- build.rs must list frontend files for rerun-if-changed (a dir-level
  directive only watches the dir mtime, not content edits) — the .so
  bakes the frontend at compile time and cargo otherwise ships stale
  UI with a 'successful' build.
- logcat drops ~75% of lines under load: use the file trace.
- fetch() is CORS-restricted (page origin http://tauri.localhost);
  <img> is not — add ACAO:* anyway.

Emulator (5853 real files): grid renders, lazy thumbs via
gallery:// with on-disk cache (87 files 35-72KB), FR log clean at
60Hz, viewer opens full-res with compositor-only pan/zoom. The single
'broken' cell is a 17-byte fake test JPEG (correct behavior).
2026-10-31 18:59:51 -04:00
docs/BUGS 120Hz: jank_eval referee + slot-based wake guard + MISS ledger 2026-10-30 13:29:50 -04:00
harnesses gtauri: Tauri v2 gallery harness WORKING on emulator 2026-10-31 18:59:51 -04:00
scripts Port the gallery from Slint to egui (egui 0.31 / egui_glow / winit 0.30 / glow 0.16) 2026-10-31 13:50:46 -04:00
shim/out Port the gallery from Slint to egui (egui 0.31 / egui_glow / winit 0.30 / glow 0.16) 2026-10-31 13:50:46 -04:00
src Port the gallery from Slint to egui (egui 0.31 / egui_glow / winit 0.30 / glow 0.16) 2026-10-31 13:50:46 -04:00
tools Port the gallery from Slint to egui (egui 0.31 / egui_glow / winit 0.30 / glow 0.16) 2026-10-31 13:50:46 -04:00
.gitignore Port the gallery from Slint to egui (egui 0.31 / egui_glow / winit 0.30 / glow 0.16) 2026-10-31 13:50:46 -04:00
Cargo.lock Port the gallery from Slint to egui (egui 0.31 / egui_glow / winit 0.30 / glow 0.16) 2026-10-31 13:50:46 -04:00
Cargo.toml Port the gallery from Slint to egui (egui 0.31 / egui_glow / winit 0.30 / glow 0.16) 2026-10-31 13:50:46 -04:00
HANDOFF.md docs: HANDOFF §8.12 (egui port + tttest harness), README reflects the egui stack 2026-10-31 13:54:56 -04:00
LICENSE Initial commit 2026-10-27 12:13:22 -04:00
README.md docs: HANDOFF §8.12 (egui port + tttest harness), README reflects the egui stack 2026-10-31 13:54:56 -04:00

README.md

gallery

A high-performance image gallery for Android (primary), Linux and macOS — Rust + egui 0.31 (egui_glow / winit 0.30 / glow 0.16). Ported from Slint 1.18 after the zero-jank campaign showed Slint-on-Mali janky at its base level while egui measured 3–7× cleaner (HANDOFF.md §8.11–8.12). The Slint tree is preserved in git history and docs/BUGS/.

Status: M0–M4 ported to egui, zero-jank tuning in progress. See HANDOFF.md — the development hand-off: architecture, thumbnail pipeline, milestones M1–M7, the Slint jank campaign, the egui port, and the sltest/egtest/tttest harnesses (A/B/C: Slint/egui/WebView).

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 egui (MIT/Apache-2.0).