The develop view reported a remote original on its way through the
error message, so it read "Could not load image" over "Downloading…".
It did so on every step along the roll, including a cached frame that
was ready within a tick, so each step flashed the error.
Waiting is now its own state. On the step, the grid's thumbnail of the
photograph stands in at once. Only when a transfer is really on the
wire does it dim under "Not on this device yet", with a line like
"Downloading — 12.4 of 38.0 MB" and a progress bar.
The bytes come from a new RemoteBackend::get_reporting. The Nextcloud
backend overrides it to read the body chunk by chunk; the default
reports once at the end. Progress is kept in the in-flight registry by
path, because a step usually lands on a frame the prefetcher is already
fetching. The catalog's file length stands in when the server sends no
Content-Length.
In a library's develop view the arrows, space, A and D opened
`library-roll-pick(library-roll-current ± 1)`. `roll-current` is a row
of the loaded window, set when a photograph was opened and never again.
Two things followed on any library larger than one window:
- Holding D stopped dead at the end of the loaded window: the pick of a
row past `ctl.paths` found no path and did nothing, a few screenfuls
into a library of thousands. A stopped at its start the same way.
- Any reload of the window — a background sync, a judgement that drops
the open frame out of a filter — left `roll-current` on a row that now
held another photograph. The roll marked it, develop's rating keys
judged it, and the next step walked on from it.
The keys now call `library-roll-step(delta)`, and Rust steps as
`move_cursor` does in the grid: from the open photograph's ordinal
(`index`, which `report_position` already keeps), clamped to the
library, loading the window around the target only when it lies
outside. The window-bringing half of `place_cursor` is shared for this
as `bring_window_to`, so the grid cursor and the roll move the window
the same way. Catalog reads stay proportional to the window: one
`load_window` per window crossed, none per step within it.
The open photograph is also remembered by image id. Every
`load_window` finds it again in the rows it just read (a scan of one
window, no query), puts `roll-current` and `index` back on it, or takes
the mark off when it is not there. When it is missing but its ordinal
is still inside the window, it has left the grid and its successor
moved up into its place, so the next step forward lands on that ordinal
instead of skipping the successor.
A click on the roll still reports a row; it is right because the cells
it is drawn from and `ctl.paths` are replaced together, and it now goes
through the same open path as a step.
Fixes#64.
controller holds LibraryController and the window-sizing constants every
other module reads and writes through pub(super) fields, the same shape
collections_ui and develop already use. open is the launch-to-scan cycle and
the worker that checks the catalog file before either touches it. offline is
what of a collection is on this device and the prompt that offers to change
it. window fills the grid model from the catalog and drains the thumbnail
fetch, which is the piece the catalog-reads-are-proportional-to-what-changed
rule (docs/catalog.md §1) bears on most directly. sync is the background
passes that reach beyond the loaded window: the metadata sweep, the
whole-library thumbnail pass, and the exchange with the server.
ratings_keywords applies a judgement or a keyword to a selection and queues
the sidecar and XMP writes behind it. timeline is the capture-time sidebar
and the photographer's place together, kept in one file because a restored
place ends by moving the timeline marker and a scrub is a restore of one
instant, so most calls between the two would otherwise cross a module
boundary. grid wires the grid's own callbacks — the keyboard cursor,
cell-size zoom, the routes into and out of develop — and filter_bar wires
the rating, people, date and offline-scope filters, calling back into
whichever of the above owns the work a filter change triggers.
Extracted by item rather than by line range, so every doc comment and
TRACES/GESTURE annotation stayed attached to the code it describes; the
sorted set of TRACES/GESTURE lines in the new directory is identical to the
original file's. Tests moved with the code they exercise, including the
handful of fixtures — settle, model_of, with_catalog, zoom_cell, pinch_step
— that only one target module needed and so were not worth sharing through
a test_support module the way the other splits use one. Items that crossed
a new module boundary were widened from private to pub(super), narrower
than the whole-file access the original gave them; a few items already
pub(crate) for recovery_ui or presets stayed there rather than being
narrowed, since nothing needed them tightened further.
mod.rs re-exports the same surface library_ui:: callers used before, so
lib.rs and every other caller needed no change.
dtourolle