"Done Cropping", "Done Repairing", "Done Masking" and "Fit" float over the foot of the canvas. So does the photo roll's swipe handler, and a gesture handler is not a layout box — it is an input surface. A press inside one is delayed, then offered to that handler's own children and to nothing else: `input_event_filter_before_children` returns `DelayForwarding`, which aborts the hit-test traversal outright, and the replay afterwards visits only the handler's subtree. Everything behind it is never asked, hover included. The band was `strip-height + reach` — 136px along the bottom — whether the roll was out or away. So the button that ends a mode was drawn, was lit, and did nothing for as long as a library was open, which is the whole time anybody is developing from one. The tool rail kept working because it is a sibling of the canvas rather than behind the roll, which is exactly why this looked like two dead buttons rather than a dead region. The band now goes where the roll goes. The handler carries the strip instead of standing still while the strip animates inside it: closed, only `reach` is on screen and the rest hangs below the window where nothing can press it; open, it still covers the thumbnails, which is what lets a swipe down anywhere across them put the roll away. The 180ms travel moved from the strip onto the handler, so the drawn positions in both states are what they were. The controls are then positioned against that band rather than against the bottom of the canvas, and ride up with the strip when it comes out. Reordering them in front of the roll would have been the other fix, and it is the wrong one — the band would become the thing that cannot be reached, and a gesture nobody can start is worse than a button with a second way out. `roll-strip` and `roll-reach` are tokens now, because two files have to agree on where that band is for either of them to keep out of it. The bottom of the photograph comes back with it: the crop's lower handles and a repair placed near the bottom edge were inside the same 136px and had the same fault. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
DarkRoom
A cross-platform, non-destructive RAW photo editor for Linux and Android.
Status: 0.9.0, and no longer a spike. A library opens, culls, develops and exports on both platforms, across eight tagged releases. What is not built is written down rather than merely absent — see docs/outstanding.md for the requirements that have no implementation and why, and docs/technical-debt.md for the compromises that were chosen.
Documentation
| Document | Contents |
|---|---|
| CONTRIBUTING.md | How to land a first change without reading the rest |
| requirements.md | What the software must do — 179 numbered requirements |
| architecture.md | How it is built — crates, GPU pipeline, data model, sync |
| technical-debt.md | Compromises taken deliberately, each with the condition that retires it |
| outstanding.md | What is not built, and whether that is a decision or a gap |
| code-health.md | What a contribution costs, per seam, measured |
| traceability.md | Generated: which requirement is claimed by which file |
| faces.md | Face detection and identity — the models, the licence problem, and what S14 measured |
Building
Desktop:
cargo run -p darkroom-desktop
Android (containerised toolchain, see docker/android):
./docker/android/build.sh cargo ndk -t arm64-v8a build --release
Git LFS is required for the model weights, and the toolchain pins itself. CONTRIBUTING.md has the details and the four commands CI will run against what you send.
Current state
Working. A catalog over a local folder, a Nextcloud account, or a folder a
sync client keeps in virtual-files mode — where a placeholder is treated as the
photograph rather than as a one-byte file. A virtualised library grid with a
capture-time timeline, ratings, labels, keywords, collections and a trash that
survives a crash mid-operation. Card ingest. Face detection and identity, with
the index syncing between devices. A develop pipeline of fifteen declared
operations fused into a single compute dispatch, plus the neighbourhood
operations that cannot be — clarity, texture, capture sharpening, noise
reduction, lens correction, spectral film simulation. Crop, straighten, spot
removal, gradient and subject-segmentation masks, named presets, and a
generated panel that no operation in ui/ is allowed to name. Export to JPEG,
PNG and 8- or 16-bit TIFF with resize and output sharpening.
The zero-copy display path works on desktop. The compute pass writes a texture that Slint composites directly, which is what ARCH §6.1 requires; the readback it forbids costs 96% of frame time at 4K, and
cargo run -p dr-gpu --example bench --features readback
still reproduces that measurement. The one exception is the Android develop view, which reads the frame back through the CPU because zero-copy there needs wgpu's Vulkan swapchain, and that tears a portrait window on a tablet whose panel is mounted landscape. It is debt, not a revision of the rule: the reasoning, the on-device measurements that forced it, and the three separate things any one of which would remove it are in technical-debt.md TD-1.
Not built. Plugins, compare and survey culling, focus peaking, burst grouping, AI denoise, tiled and progressive rendering, and most of the Android platform integration beyond running. The performance targets in §4.1 are unverified rather than unmet — the per-commit benchmark suite §8 requires does not exist, so nothing fails a build on a regression. docs/outstanding.md is the list, with the reasoning.
Licence
GPL-3.0-or-later.