Rate under the pointer, filter a star range, and name Help as help

Rating keys in the grid follow darktable's rule: with the pointer over a
photograph outside the selection, 0-5, P, X and U judge that photograph
alone; over one inside it, the whole selection, as before; off the grid,
the selection. The hover is cleared when the grid scrolls, so a key after
a wheel turn cannot judge whatever used to be under the pointer.

Holding F and tapping digits filters by stars: one digit for exactly
that many, two for everything between them, F alone to show every
rating again. The filter gains a ceiling to do it (`max_rating`, one
BETWEEN in the query). The place record carries it, and a record from an
older build reads as having none. The star chips light across a capped
range and the bar says "2-3★ only" beside them.

The grid also takes Ctrl+E and Ctrl+Shift+E for the selection, Ctrl+V to
paste onto it and Ctrl+A to select all. The "Gestures" button is now
"Help", its sheet "Controls and shortcuts", and F1 opens it.

docs/gestures.md

@@ -5,7 +5,7 @@
 
 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.
 
-44 gestures, in 4 places.
+47 gestures, in 4 places.
 
 ## Develop
 
@@ -25,7 +25,7 @@ Sampling a neutral is the first move of the tonal pass — every colour judgemen
 
 Anchored on the fingers' midpoint, and on the pointer, so the gesture reads as magnifying the picture rather than sliding it about. Double-tap is the way to an exact 1:1; this is the way to everything in between.
 
-<sub>`ui/dr-ui/ui/app.slint:1701`</sub>
+<sub>`ui/dr-ui/ui/app.slint:1707`</sub>
 
 ### Move a magnified photograph about
 
@@ -34,7 +34,7 @@ Anchored on the fingers' midpoint, and on the pointer, so the gesture reads as m
 
 Only once there is something outside the viewport to reach, which is why the cursor becomes a hand exactly then. The view is clamped to the frame: panning past the edge would show undefined area beside the photograph, and that reads as a rendering fault rather than as the end of the picture.
 
-<sub>`ui/dr-ui/ui/app.slint:1792`</sub>
+<sub>`ui/dr-ui/ui/app.slint:1798`</sub>
 
 ### Paint a mask by hand
 
@@ -43,7 +43,7 @@ Only once there is something outside the viewport to reach, which is why the cur
 
 A model's mask stops inside a shoulder and leaks into the hair, and no single edge control fixes two errors that go opposite ways. The whole stroke is one step in the history, so taking a mark back costs one press however long it took to make.
 
-<sub>`ui/dr-ui/ui/app.slint:1879`</sub>
+<sub>`ui/dr-ui/ui/app.slint:1885`</sub>
 
 ### Take back the last change
 
@@ -53,7 +53,7 @@ A model's mask stops inside a shoulder and leaks into the hair, and no single ed
 
 A whole drag is one step, so undo takes back a decision rather than a frame of a gesture. The list is there because arriving six steps back costs what arriving from one does.
 
-<sub>`ui/dr-ui/ui/app.slint:2107`</sub>
+<sub>`ui/dr-ui/ui/app.slint:2113`</sub>
 
 ### Do it again after taking it back
 
@@ -61,7 +61,7 @@ A whole drag is one step, so undo takes back a decision rather than a frame of a
 - **Pointer** — Click it, or press Redo in the History header
 - **Keyboard** — Ctrl+Shift+Z
 
-<sub>`ui/dr-ui/ui/app.slint:2120`</sub>
+<sub>`ui/dr-ui/ui/app.slint:2126`</sub>
 
 ### Copy the settings from this photograph
 
@@ -71,7 +71,7 @@ A whole drag is one step, so undo takes back a decision rather than a frame of a
 
 The button is the copy that has to work: a tablet has no modifier key to hold and no menu bar to hang the action from. The shortcut is an accelerator for a control that is on screen either way.
 
-<sub>`ui/dr-ui/ui/app.slint:2153`</sub>
+<sub>`ui/dr-ui/ui/app.slint:2159`</sub>
 
 ### Paste the settings onto this photograph
 
@@ -81,7 +81,7 @@ The button is the copy that has to work: a tablet has no modifier key to hold an
 
 The button names what would be pasted — "3 adjustments", and whether the crop is coming with it — which the shortcut cannot say. Both paste the same scope.
 
-<sub>`ui/dr-ui/ui/app.slint:2165`</sub>
+<sub>`ui/dr-ui/ui/app.slint:2171`</sub>
 
 ### Choose which kinds of edit a copy carries
 
@@ -91,7 +91,7 @@ The button names what would be pasted — "3 adjustments", and whether the crop
 
 Lightroom's Copy Settings. Pasting a look across a shoot usually means leaving each frame's crop and rotation alone, and that is a choice to make at the moment of copying.
 
-<sub>`ui/dr-ui/ui/app.slint:2182`</sub>
+<sub>`ui/dr-ui/ui/app.slint:2188`</sub>
 
 ### Export this photograph as the last one was
 
@@ -101,7 +101,7 @@ Lightroom's Copy Settings. Pasting a look across a shoot usually means leaving e
 
 Every export runs on the defaults in Settings, so "as the last one was" is what the button already does. The chord is Lightroom's and darktable's, kept so hands that learned it there need not learn it again.
 
-<sub>`ui/dr-ui/ui/app.slint:2211`</sub>
+<sub>`ui/dr-ui/ui/app.slint:2217`</sub>
 
 ### Choose how to export, then export
 
@@ -111,7 +111,7 @@ Every export runs on the defaults in Settings, so "as the last one was" is what
 
 The export sheet is the export defaults alone with an Export button. What is chosen there is kept, so it is also what the next Ctrl+Shift+E uses.
 
-<sub>`ui/dr-ui/ui/app.slint:2223`</sub>
+<sub>`ui/dr-ui/ui/app.slint:2229`</sub>
 
 ### Change which group of adjustments is on screen
 
@@ -121,7 +121,7 @@ The export sheet is the export defaults alone with an Export button. What is cho
 
 The groups are whatever the operation set declares itself to be about, so there are as many as the pipeline has and no key can be assigned to one of them by name. Stepping is the binding that survives a node being added.
 
-<sub>`ui/dr-ui/ui/app.slint:2248`</sub>
+<sub>`ui/dr-ui/ui/app.slint:2254`</sub>
 
 ### Look at the photograph at 1:1
 
@@ -131,7 +131,7 @@ The groups are whatever the operation set declares itself to be about, so there
 
 Noise reduction and capture sharpening are judgements about single pixels, and a fitted view averages several of the file's into each one on screen — so the frame looks softer than it is and the correction goes too far. The point and the magnification survive opening the next photograph, which is what makes checking the same eye across forty portraits forty keystrokes rather than forty pans.
 
-<sub>`ui/dr-ui/ui/app.slint:2283`</sub>
+<sub>`ui/dr-ui/ui/app.slint:2289`</sub>
 
 ### Move to the next or previous photograph
 
@@ -141,7 +141,7 @@ Noise reduction and capture sharpening are judgements about single pixels, and a
 
 The edit on screen is saved on the way out, so stepping through a folder is as much a departure as going back to the grid and loses nothing. A and D as well as the arrows, so the left hand steps along the roll while the right stays on the mouse. Unmodified only: Ctrl+D and Ctrl+A are not this.
 
-<sub>`ui/dr-ui/ui/app.slint:2335`</sub>
+<sub>`ui/dr-ui/ui/app.slint:2341`</sub>
 
 ### See the photograph before you edited it
 
@@ -151,7 +151,7 @@ The edit on screen is saved on the way out, so stepping through a folder is as m
 
 Held rather than toggled, and no split screen: a split halves the working image on the tablet the column was sized for, and the comparison photographers describe making is a flick back and forth. It takes no history step, so checking whether a frame is overcooked costs nothing to undo afterwards.
 
-<sub>`ui/dr-ui/ui/app.slint:2468`</sub>
+<sub>`ui/dr-ui/ui/app.slint:2474`</sub>
 
 ### Put one control back to its default
 
@@ -294,7 +294,7 @@ The right match confidence is a property of your library, not of the model. "Wha
 
 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.
 
-<sub>`ui/dr-ui/ui/library.slint:1572`</sub>
+<sub>`ui/dr-ui/ui/library.slint:1591`</sub>
 
 ### Add or remove one photograph
 
@@ -303,7 +303,7 @@ Touch has no ctrl, so without a mode there is no way to select a second photogra
 
 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.
 
-<sub>`ui/dr-ui/ui/library.slint:1581`</sub>
+<sub>`ui/dr-ui/ui/library.slint:1600`</sub>
 
 ### Leave selecting
 
@@ -311,7 +311,7 @@ While selecting, a tap never opens. That is the whole point of the mode: one mea
 - **Pointer** — Press Done in the header
 - **Keyboard** — Escape
 
-<sub>`ui/dr-ui/ui/library.slint:1589`</sub>
+<sub>`ui/dr-ui/ui/library.slint:1608`</sub>
 
 ### Pick a photograph up to drag it
 
@@ -320,7 +320,7 @@ While selecting, a tap never opens. That is the whole point of the mode: one mea
 
 A finger on a photograph might be starting a scroll, and for the first half-second the grid assumes it is. Holding says otherwise, and the ring is the grid saying it heard — from there the drag cannot be lost to a scroll. A mouse never waits: the cursor is precise enough that a sideways drag is unambiguous from the first pixel.
 
-<sub>`ui/dr-ui/ui/library.slint:1619`</sub>
+<sub>`ui/dr-ui/ui/library.slint:1638`</sub>
 
 ### Select a range
 
@@ -329,7 +329,7 @@ A finger on a photograph might be starting a scroll, and for the first half-seco
 
 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.
 
-<sub>`ui/dr-ui/ui/library.slint:1684`</sub>
+<sub>`ui/dr-ui/ui/library.slint:1703`</sub>
 
 ### Take the blinks out of a burst
 
@@ -338,7 +338,7 @@ This replaced a double tap, which had no visible state and could take forty phot
 
 Face indexing reads each face's eyes. The chip drops frames where the chosen people are caught blinking, and leaves sunglasses and eyes it could not read alone.
 
-<sub>`ui/dr-ui/ui/library.slint:2383`</sub>
+<sub>`ui/dr-ui/ui/library.slint:2411`</sub>
 
 ### Find photographs with two people in them
 
@@ -347,7 +347,35 @@ Face indexing reads each face's eyes. The chip drops frames where the chosen peo
 
 "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.
 
-<sub>`ui/dr-ui/ui/library.slint:2412`</sub>
+<sub>`ui/dr-ui/ui/library.slint:2440`</sub>
+
+### Export the selection as the last export was
+
+- **Touch** — Select them, then Export in the selection bar
+- **Pointer** — Select them, then Export in the selection bar
+- **Keyboard** — Ctrl+Shift+E, or Ctrl+E to see the export settings first
+
+Lightroom's and darktable's chords. Every export runs on the saved defaults, so the plain chord opens them beside an Export button and the shifted one skips straight to exporting.
+
+<sub>`ui/dr-ui/ui/library.slint:2993`</sub>
+
+### Paste copied settings onto the selection
+
+- **Touch** — Select them, then "Paste to N" in the selection bar
+- **Pointer** — Select them, then "Paste to N"
+- **Keyboard** — Ctrl+V
+
+<sub>`ui/dr-ui/ui/library.slint:3017`</sub>
+
+### Show only photographs with some number of stars
+
+- **Touch** — Tap a star chip in the filter bar
+- **Pointer** — Click a star chip in the filter bar
+- **Keyboard** — Hold F and tap a digit for exactly that many stars, or two digits for everything between them; tap F alone to show every rating again
+
+The chips say "this many or more". A range with a ceiling — the twos and threes still to be decided — is the keyboard's alone, and the bar says so in words while it holds.
+
+<sub>`ui/dr-ui/ui/library.slint:3039`</sub>
 
 ### Resize the thumbnails
 
@@ -356,7 +384,7 @@ Face indexing reads each face's eyes. The chip drops frames where the chosen peo
 
 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.
 
-<sub>`ui/dr-ui/ui/library.slint:3072`</sub>
+<sub>`ui/dr-ui/ui/library.slint:3245`</sub>
 
 ### File photographs in a collection
 
@@ -365,7 +393,7 @@ There is no wheel on a tablet, so without the pinch the cell size could only be
 
 The selection is what the drag carries, which is why selecting several is worth the mode: forty photographs file in one gesture.
 
-<sub>`ui/dr-ui/ui/library.slint:3269`</sub>
+<sub>`ui/dr-ui/ui/library.slint:3442`</sub>
 
 ### Open a photograph
 
@@ -374,17 +402,17 @@ The selection is what the drag carries, which is why selecting several is worth
 
 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.
 
-<sub>`ui/dr-ui/ui/library.slint:3537`</sub>
+<sub>`ui/dr-ui/ui/library.slint:3723`</sub>
 
 ### 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
+- **Keyboard** — 0 to 5 with the pointer over it, or on the selection
 
 A star has to take the press without it also reaching the cell, or every rating throws the user into develop.
 
-<sub>`ui/dr-ui/ui/library.slint:3657`</sub>
+<sub>`ui/dr-ui/ui/library.slint:3843`</sub>
 
 ### Choose the frame a folded burst shows
 
@@ -393,7 +421,7 @@ A star has to take the press without it also reaching the cell, or every rating
 
 A folded burst draws its earliest frame, which is a fact about the clock and not a judgement about the photograph — nothing in this application ranks a frame (FR-CULL-5). But the point of a burst is that one of the twelve is better than the other eleven, and the photographer is the only one who knows which. So the choice is offered on the frames themselves, while they are open and side by side, which is the one moment the alternatives are on screen to be compared.
 
-<sub>`ui/dr-ui/ui/library.slint:3788`</sub>
+<sub>`ui/dr-ui/ui/library.slint:3975`</sub>
 
 ### Drop the selection but keep selecting
 
@@ -402,16 +430,17 @@ A folded burst draws its earliest frame, which is a fact about the clock and not
 
 Distinct from Done, which leaves the mode entirely. Clearing keeps it, so the next selection can start straight away.
 
-<sub>`ui/dr-ui/ui/library.slint:4464`</sub>
+<sub>`ui/dr-ui/ui/library.slint:4651`</sub>
 
 ### Select everything the grid is showing
 
 - **Touch** — While selecting, press "Select all"
 - **Pointer** — While selecting, press "Select all"
+- **Keyboard** — Ctrl+A
 
 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.
 
-<sub>`ui/dr-ui/ui/library.slint:4481`</sub>
+<sub>`ui/dr-ui/ui/library.slint:4668`</sub>
 
 ### Take photographs out of a collection
 
@@ -420,4 +449,4 @@ A scoped grid of two hundred frames is two hundred taps otherwise, and "all of t
 
 The badge on a cell says a photograph is filed in three collections and never which. This is the sheet that names them, and the only way out of one the grid is not currently scoped to.
 
-<sub>`ui/dr-ui/ui/library.slint:4604`</sub>
+<sub>`ui/dr-ui/ui/library.slint:4792`</sub>