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Greg Pomerantz e10a71b00a Viewer input fixes: tap during fling stops the fling (no open); zoom sticks at native resolution 
1) Tap/touch during a fling: the ListView's Flickable already stops the
   fling when a press lands (its press handler resets the fling
   animation — slint core items/flickable.rs, remove_binding =
   set_animated_value(current, none)); the bug was that the press is
   then forwarded to the cell (~100 ms later, FORWARD_DELAY) and the
   release opened the viewer. The cell TouchArea now reports its
   pointer-event down (1.18 has no pressed callback) via
   cell-pressed → on_cell_pressing, which marks the tap as a
   fling-stopper when the grid moved within the last 150 ms (the tick
   tracks raw list-y changes in grid_motion); on_open_image then
   swallows the tap.

2) Zooming past max resolution moved the image: zoom_at applied the
   raw factor to tx/ty BEFORE clamping s — at the cap s stayed put
   but the translation still shifted about the (moving) pinch
   center, so the image followed the fingers like a two-finger drag.
   zoom_at now clamps s first (factor derived from the clamped s:
   at the cap factor = 1, a true no-op), and Input::pinch sticks at
   both caps (the handler reports a CUMULATIVE scale from the pinch
   start, so past the cap every later update would otherwise drift).
   The zoom cap is now NATIVE resolution: max(fit, 1.0) — 1 device
   pixel per image pixel (small images keep fit); zooming further
   only pixelates, so it is not allowed (was 20× fit).

Tests: zoom_at_past_cap_is_noop, pinch_sticks_at_caps (new),
clamp_zoom_bounds (native cap + small-image fit), updated
pinch_handler_sequence (4× fit now clamps at native). 36/36.
Emulator: fling+tap → 0 viewer opens, grid settled; normal tap
still opens (cached path).
2026-10-29 12:30:42 -04:00
docs/BUGS Jank-hunt perf feature: FR/STG/DECODE instrumentation, off by default 2026-10-29 08:11:51 -04:00
scripts GPU-resident thumbnails: worker uploads to Slint's wgpu device (gputex) 2026-10-28 10:57:15 -04:00
src Viewer input fixes: tap during fling stops the fling (no open); zoom sticks at native resolution 2026-10-29 12:30:42 -04:00
vendor M4: full-screen viewer with pinch/pan zoom 2026-10-29 10:51:56 -04:00
.gitignore M0: Slint gallery scaffold + development hand-off 2026-10-27 12:22:59 -04:00
build.rs M0: Slint gallery scaffold + development hand-off 2026-10-27 12:22:59 -04:00
Cargo.lock Jank-hunt perf feature: FR/STG/DECODE instrumentation, off by default 2026-10-29 08:11:51 -04:00
Cargo.toml Jank-hunt perf feature: FR/STG/DECODE instrumentation, off by default 2026-10-29 08:11:51 -04:00
HANDOFF.md M4.1: instant viewer (no splash) + idle full-res prefetch 2026-10-29 11:53:45 -04:00
LICENSE Initial commit 2026-10-27 12:13:22 -04:00
README.md M1: metadata scan + sqlite DB + placeholder list 2026-10-27 13:28:33 -04:00

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).