dtourolle 2cd49d1cb7 Measure the rail by counting it, so it can scroll instead of clipping
With the adjustment groups in the rail, a short window silently lost them.
At a 1500x680 window the rail drew Photo, Compose, Local, Repair, the seam and
"All", and then stopped: Optics, Light, Colour, Effects and Detail were not
scrolled off, they were gone, with nothing on screen to say so. The develop
view's primary navigation, unreachable by any means.

The Flickable was put here to prevent exactly that, and it could not, because
its viewport asked the layout how tall it wanted to be while the layout was
already taking its height from the viewport. Slint settles that cycle by
handing back the height it was given, so `max(self.height, preferred-height)`
could never exceed `self.height` and there was never anything to scroll.

Counting breaks the cycle. Every entry here is a fixed height by construction —
a tool is `rail-entry-height`, a group is a touch target — so the content is
six plus four fifty-fours plus a gap plus a touch target for each group and
"All", which is exact rather than an estimate and depends on nothing that
depends on it. Four tools and five groups come to 498, against the 340 a
680-pixel window leaves at 2x, and the difference is now scrollable rather
than absent.

Found by shrinking the window with the groups forced into the rail. The
interaction itself is unverified: synthetic input does not reach a Slint
window on this desktop, and the tablet was disconnected, so what is confirmed
is the arithmetic and the clipping it explains, not the scrolling it should
restore.
2026-09-07 00:17:08 +02:00
2026-08-30 21:33:16 +02:00
2026-08-26 10:08:51 +02:00

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.

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2026-10-07 11:27:59 +00:00
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