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dtourolleandClaude Opus 5 677146883f Decide what the header gives up when it cannot hold everything

Three faults, all invisible in the source and all found by looking at
the window.

`alignment: start` on the selection bar. Slint only hands space to
`horizontal-stretch` children under the default `stretch` alignment;
under `start` every child takes its preferred width and the stretch is
ignored without complaint. That was harmless while the bar held four
controls. Now that it holds every selection verb it is the difference
between a count that gives way and a row that can only scroll, so the
alignment goes and the stretch does its job.

The title collapsed to "…". An eliding Text has a minimum of nothing,
so once the buttons had taken their own minimums the title was the
cheapest thing in the row to give away — the window stopped saying
which library was open while the byte counts beside it stayed. It gets
a 90px floor.

And the status line does not get one. After the sidebar takes its 232,
a 1100pt window leaves this header about 868, and the buttons want
most of that before a character is drawn — so something must degrade,
and the order is the whole question. A floor here bought a readable
status by pushing Settings off the right edge, reachable only by
knowing to flick-scroll, which is precisely the fault the row's own
Flickable comment warns about. A control you cannot see is worse than
a sentence you cannot finish. The status line is also the most
redundant thing in the header — the sidebar states the library's count
and the filter chips state it again — so it is what gives, and it
grows back the moment there is room.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

2026-08-30 14:05:24 +02:00

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How the application is driven

Every entry here is extracted from the comment beside the code that implements it, so this file cannot describe a gesture the application does not have. Add one by writing a GESTURE: block next to the implementation; there is nowhere else to write it.

15 gestures, in 2 places.

People

Pull a face out of the wrong person

Touch — Tap the faces that do not belong, then "Split off"
Pointer — Click the faces that do not belong, then "Split off"

Grouping over-merges on siblings, on parents and children, and on the same person a decade apart, so splitting is as prominent as merging. A tool that can only merge makes its own errors permanent.

_{ui/dr-ui/ui/identity.slint:130}

Rule on a suggested face

Touch — Tick to confirm it, cross to reject it
Pointer — Tick to confirm it, cross to reject it

A face is either the system's guess or the user's judgement, and the two are never conflated. A rejection is remembered, so the face is not suggested for that person again.

_{ui/dr-ui/ui/identity.slint:150}

See a person's photographs

Touch — Choose them in the rail, then "Show photos"
Pointer — Choose them in the rail, then "Show photos"

This is the point of having identified anybody. Without it the screen is a filing cabinet with no drawer handles.

_{ui/dr-ui/ui/identity.slint:545}

Change how faces are grouped

Touch — "Grouping…", move the dials, then Regroup
Pointer — "Grouping…", move the dials, then Regroup

The right match confidence is a property of your library, not of the model. "What would this do?" answers for this library without writing anything; names, confirmations and the groups you have set aside are kept whatever the dials say.

_{ui/dr-ui/ui/identity.slint:582}

Library grid

Start selecting several photographs

Touch — Press and hold a photograph, or press Select in the header
Pointer — Ctrl-click, or press Select in the header

Touch has no ctrl, so without a mode there is no way to select a second photograph — the first tap would open it. The hold is the fast way in and the button is the one that can be found.

_{ui/dr-ui/ui/library.slint:1182}

Add or remove one photograph

Touch — While selecting, tap it
Pointer — Ctrl-click it

While selecting, a tap never opens. That is the whole point of the mode: one meaning per gesture at a time. Press Done to get tap-to-open back.

_{ui/dr-ui/ui/library.slint:1191}

Leave selecting

Touch — Press Done in the header
Pointer — Press Done in the header
Keyboard — Escape

_{ui/dr-ui/ui/library.slint:1199}

Select a range

Touch — While selecting, press "Select to…", then tap the last photograph of the run
Pointer — Shift-click the last photograph of the run

This replaced a double tap, which had no visible state and could take forty photographs by accident. The run is resolved by the catalog rather than by what is on screen, so the grid can scroll between the two taps — the ranges that hurt on a tablet are longer than a screenful, which is exactly where a finger sweep runs out.

_{ui/dr-ui/ui/library.slint:1260}

Find photographs with two people in them

Touch — Open the People chip on the filter bar, tap each name, then switch the chip beside them to "all of them"
Pointer — Open the People chip on the filter bar, click each name, then switch the chip beside them to "all of them"

"Any of them" is a union and "all of them" is an intersection. The tray is where both terms and the choice between them live, because a filter belongs on the filter bar.

_{ui/dr-ui/ui/library.slint:1928}

Resize the thumbnails

Touch — Pinch the grid with two fingers
Pointer — Ctrl and the scroll wheel

There is no wheel on a tablet, so without the pinch the cell size could only be changed by a control a finger cannot reach.

_{ui/dr-ui/ui/library.slint:2554}

File photographs in a collection

Touch — Drag a photograph — or a whole selection — onto a collection in the sidebar. Starting a drag stops the press becoming a hold, so it cannot leave you in selection mode.
Pointer — Drag a photograph — or a whole selection — onto a collection in the sidebar

The selection is what the drag carries, which is why selecting several is worth the mode: forty photographs file in one gesture.

_{ui/dr-ui/ui/library.slint:2717}

Open a photograph

Touch — Tap it — a single tap, any length
Pointer — Click it

A tap opens; a tap that moved does not. Travel is what separates a deliberate tap from a hand brushing past, and it is the only thing that does: the two are the same length. An earlier version required the finger to dwell 120 ms instead, and that rejected ordinary taps — a real tap is often quicker than a brush.

_{ui/dr-ui/ui/library.slint:2972}

Rate a photograph without opening it

Touch — Tap a star on the cell
Pointer — Hover the cell, then click a star
Keyboard — 0 to 5 on the selection

A star has to take the press without it also reaching the cell, or every rating throws the user into develop.

_{ui/dr-ui/ui/library.slint:3084}

Drop the selection but keep selecting

Touch — Press Clear in the selection strip
Pointer — Press Clear in the selection strip

Distinct from Done, which leaves the mode entirely. Clearing keeps it, so the next selection can start straight away.

_{ui/dr-ui/ui/library.slint:3747}

Select everything the grid is showing

Touch — While selecting, press "Select all"
Pointer — While selecting, press "Select all"

A scoped grid of two hundred frames is two hundred taps otherwise, and "all of them, except those three" is a far more common shape than the taps it took to say it.

_{ui/dr-ui/ui/library.slint:3764}

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