Theme Accent Mode Density

Contrast

Text against what it sits on. Below 4.5:1 fails WCAG AA for body text — the check a reviewer runs on any surface that takes a tone.

Waiting for the first preview to report its palette.

Corners

Sets all three radii at once. The individual values are under Geometry.

Brand 5

The accent seam an app actually brands itself through. Change these and you have made the decision a real `DesignTokens.graphite(...)` call makes.

accent The one voice of color — a BRAND SLOT — as a FILL (`--accent`, `Brand.d.ts` THE ACCENT'S TWO JOBS, #1689): a surface painted with the accent under [onAccent] (a slab, the FAB, a count badge, a checked box's face, an on switch's track, an active toggle's face, a pin head, a band under `chrome: accent`) and every wash mixed from it ([accentTint], [accentSel], [focusHalo], [groundGridInk], the deep chrome). Drawn ON a surface, the accent is [accentInk]. onAccent Foreground color painted on top of [accent]. accentInk THE ACCENT'S INK (`--accent-ink`, #1689): the accent drawn ON a neutral or washed surface — text and links, a glyph or icon, a border, an edge or underline, a selection start-edge, the focus ring and a field's focused border, a radio's dot, a status marker, a progress bar or spinner, the chart's lead series, the palette's `accent` ink. THE BOUNDARY OF A FILLED STATE IS INK: a checked box, an on switch and an active toggle draw their edge in it over the [accent] fill. Absent from the brand it IS [accent], byte for byte; a brand whose accent is a high-luminance hue states a darker ink of the same hue, and the plane-contrast gate holds this, not the fill, to the card and the ground (`contrastFloorViolations`). accentTint The accent at 9% (16% dark) — ID chips, the active row's wash, an applied chip, an applied-but-closed control (`--accent-tint`, derived from [accent]). accentSel The accent at 11% (18% dark) — the rail's FILLED INDICATOR (M3), laid over the GROUND, a step stronger than [accentTint] because the ground is darker than the card (`--accent-sel`, derived from [accent]).

Geometry 15

Square or rounded, and how heavy every line is. The radius row above the controls sets all three corners at once, because "what does square feel like" is one decision rather than three numbers.

rXs Radius for chips, checkboxes, tags, badges (`--r-xs`, 2). rS Radius for controls: buttons, fields, map pins and clusters (`--r-s`, 3). rM Radius for surfaces: cards, menus, dialogs (`--r-m`, 4). rL Radius for a sheet's leading corners, the largest surfaces (`--r-l`, 8). rMark Radius for a status marker, a legend swatch (`--r-mark`, 1). rPill THE PILL FLOOR (`--r-pill`, #1102): 0 in every corners set but [CornerStyle.round], where it is 999 and clamps to height / 2. A pill-capable control reads [controlRadius] or [chipRadius], never this directly. hairline Hairline stroke width. iconStroke Icon stroke weight. focusW Focus ring stroke width (solid [accentInk], offset [focusOffset]). focusHaloW The width of a FIELD's focus halo (`--focus-halo-w`, 3): a focused field takes the [accentInk] border plus [focusHalo] this wide OUTSIDE the box — the idiomatic Flutter form is a [BoxShadow] with this `spreadRadius` and zero blur. ctl Control height: buttons, toolbar (44 comfortable · 32 compact). fld Field box height: text fields, selects, date fields (`--fld`, 44 comfortable · 36 compact) — a field box stays a step taller than a control at the desk. navh Nav row height (44 comfortable · 34 compact). rowV Table row vertical padding (density knob): 14 comfortable (a 48 row) · 10 compact (a 40 row). barH The app bar's height (`--bar-h`, 64 comfortable · 56 compact) — the frame's one band, on the ground.

Surfaces 17

Everything the app is painted ON — the ground behind the content (the frame paints it too), the cards over it, the well inset in a card, and the washes that show state.

sur The GROUND (`--sur`): the app background, and the frame — the app bar and the rail paint it, with no fill, rule or shadow of their own. paper The CARD (`--paper`): tables, panes, charts, forms, sheets, menus — the plane every job sits on, a step above [sur]. paperW Sidebar / rail wash (`--paper-w`) — retiring with the rail wash (#892). well The WELL (`--well`): inset fills inside a card — photo plates, quote blocks, tracks, avatar blocks, neutral tags. ink4 State layer: hover wash, pressed, chip trays — opaque, over the card. cardEdge The card's hairline edge (`--card-edge`) — a LITERAL per theme, not an alias: in dark it is the card's RIM, its own value, because a shadow cannot lift a card off a near-black ground. cardSelEdge The selected record card's start-edge bar (`--card-sel-edge`): 0, or [edge] under [SelectionMark.edge]. surfaceEdge The frame a tile, sheet, panel or docked pane draws around itself (`--surface-edge`, aliasing `--card-edge` — every one a card now). hair Row + minor separators inside a card. hairS Structural: table header rule, sheet edges, a divider that must read. rowHover Table row hover wash. groundHover The state layer ON THE GROUND (`--ground-hover`, #892): the rail's hover, a ghost control on the bar. [ink4] is a CARD state layer and sits above the ground's value, so on the ground it vanishes; this steps the ground itself toward the ink — `color-mix(in srgb, var(--ink) 6%, var(--sur))`, derived in each factory from its own ink and ground, so the separation knob moves it with [sur]. groundGridInk The grid's line color (`--ground-grid`: the accent at 10%). groundGridSize The grid's pitch (`--ground-pattern-size`, 24). rowSel Table row selected wash. expandBg Expanded-row detail well. scrim Modal/sheet scrim.

Bands 10

The rail's head and the view bar beside it (one band across the top at 960 and wider), a pushed screen's bar, the compact bar and the compact nav bar — the band's fill, its rule, its hover and active faces, the resting field box on it, and the ink and accent control that sit on it. The rail's tree and its footer stay on the ground.

chrome A band's fill (`--chrome`): the app bar, the app band, the rail outside a drawer, the compact nav bar. chromeField A FIELD BOX's resting fill on a band (`--chrome-field`, #1186 — `AppBar.d.ts` ON A BAND): the search field resting on an accent or deep band takes this tonal step of the band — the on-chrome ink at 14% over [chrome] — with no border, and lift to [paper] while focused. Under [ChromeTone.ground] it is the field's ordinary paper fill, so nothing changes there. chromeHair A rule on a band (`--chrome-hair`). chromeHover A band's state layer (`--chrome-hover`). chromeSel The active nav item's face on a band (`--chrome-sel`). onChrome Text and glyphs on a band (`--on-chrome`). onChrome60 Secondary ink on a band (`--on-chrome-60`): meta, counts, borders. onChromeAccent An accent control on a band (`--on-chrome-accent`) — inverted under an accent or deep band (the #338 accent-on-accent cases). onChromeAccentInk The accent as INK on a band (`--on-chrome-accent-ink`, #1689): a lit glyph, an edge or a ring on the chrome. [accentInk] under a ground band; under an accent or deep band it inverts with the fill and IS [onChromeAccent]. [onChromeScope] maps [accentInk] onto it. onChromeOnAccent The ink on that control (`--on-chrome-on-accent`).

Text and controls 11

The ink ramp, the control outlines and the field's focus halo. Every pair the panel can break is watched by a contrast badge above.

ink Primary text. ink60 Secondary text. ink40 Tertiary: labels, counts, glyphs, placeholders — never body text. ink20 DIM MARKS, never text (`--ink20`): an unfilled priority bar, the grab bar, a stepped-back chart bar, the crosshair. btnBorder Default button outline. btnBorderHover Button outline on hover. fieldBorder A field's box (`--field-border`): text fields, selects, date fields, the combobox, the ref tile, the search field — the 3:1 boundary. chkBorder Checkbox border — the 3:1 boundary. focusHalo A FIELD's focus halo color (`--focus-halo`): the accent at 20%, derived from [accent] — the FILL, since a halo is a wash (#1689) — so a brand's halo follows its accent. focusHaloDanger A focused field IN ERROR (`--focus-halo-danger`, #896; `TextField.d.ts` THE FIELD STATES): [focusHalo]'s halo in the danger, the danger at 20%. edge Selection/cursor start-edge indicator width.

Status 7

The three voices that mean something — danger, caution and ok — each as a foreground and a surface wash, danger with a border as well.

danger Danger/error foreground — someone must act. dangerTint Danger/error surface wash — the filled tag and the banner a demanding status takes. dangerEdge Danger/error border. caution The caution ink (`--caution`, #922): the StatusPill caution plate's word and the chart tier's caution tone (a donut segment, a gauge band, an aging segment). ONE number on both kits — the token's oklch value converted, never a color this kit derives. Accent-independent. cautionTint The caution plate's wash (`--caution-tint`) — [caution] at the token's alpha, so the plate composites on whatever surface it sits on. ok Success/resolved foreground — the estate's one green (`--ok`). Accent-independent like [danger]; appears only where resolution or success is stated (StatusPill positive, resolved chips), never as a third decorative voice. okTint Success/resolved surface wash (`--ok-tint`).

Data 5

The default pin head, its glyph and its halo, and the group bands. A pin's category color comes from the palette, named in the theme seed.

pinFill The head of a pin that names neither a category nor a status (`--pin-fill: var(--accent)`; `MapView.d.ts` ONE CHANNEL PER JOB). It IS the themed accent by definition. pinFg The glyph on [pinFill] (`--pin-fg: var(--on-accent)`); a palette fill takes its own [KitPaletteColor.on]. pinHalo The 1.5px ring OUTSIDE a pin head's rim, so any fill reads on any basemap (`--pin-halo`: the paper at 85%; `MapView.d.ts` EVERY FILL IS LEGIBLE ON EVERY BASEMAP). group0 Level-0 group header band. group1 Level-1 group header band.

Map 11

The basemap's roles — land, water, parks, roads and their casings, buildings, labels — and the pending pin's gray. A raster basemap keeps its own imagery; these paint the map's plate and any kit-drawn map.

mapLand Land — the map's plate (`--map-land`). mapWater Water (`--map-water`). mapPark Parks and green space (`--map-park`). mapRoad A minor road's fill (`--map-road`). mapRoadEdge A minor road's casing (`--map-road-edge`). mapRoadMajor A major road's fill (`--map-road-major`). mapRoadMajorEdge A major road's casing (`--map-road-major-edge`). mapBuilding Building footprints (`--map-building`). mapLabel Place and road labels (`--map-label`). mapLabelWater Water labels (`--map-label-water`). pinPending A PENDING pin's head (`--pin-pending`, #894): the StatusMark `pending` tone on a pin with no category, whose fill says its status — and the hollow status badge's border beside one (`MapView.d.ts` ONE CHANNEL PER JOB, #972). [accent], [ok] and [danger] carry the other three. Clears 3:1 on [mapLand]; never text.

Scrollbars 6

Every scroller's bar: the thumb at rest and while hovered or dragged, the strip it rides, and the desk bar's thickness, side gap and corners. The desk half shows only while a fine pointer is attached; at touch the platform's own overlay keeps its size.

scrollbarThumb The scrollbar thumb at rest (`--scrollbar-thumb`, aliasing [ink40]): the muted-ink role, which clears the 3:1 a draggable control needs on [sur] and [paper] — never the state layer, which Material's Android thumb reads by default and which cannot be seen on [sur]. scrollbarThumbHover The thumb while hovered or dragged (`--scrollbar-thumb-hover`, aliasing [ink60]) — one ink level up; the thumb never grows. scrollbarTrack The strip the thumb rides (`--scrollbar-track`): transparent in graphite, so the thumb reads against the surface it scrolls. A theme may fill it. scrollbarSize The DESK scrollbar thumb's thickness (`--scrollbar-size`, 8). Applied only while a fine pointer is attached; at touch the platform's overlay keeps its own. scrollbarInset The clear gap on either side of the desk thumb (`--scrollbar-inset`, 2) — `ScrollbarThemeData.crossAxisMargin` — so a scroller's bar takes [scrollbarSize] + 2 × this. scrollbarRadius The thumb's corner radius (`--scrollbar-radius`, aliasing [rS]): the control radius, so a theme that moves [rS] moves its thumbs with no widget edit.

Advanced 6

Real controls that are not decisions — motion durations, the focus ring offset, the touch floor. Opens collapsed on purpose.

tQuick Quick transition duration — chevrons, hovers, checks. tMove Move transition duration — sheets, rail, menus. tDraw Draw transition duration (`--t-draw`) — the chart entrance band, the draw-in choreography's clock. tStagger Per-mark entrance offset (`--t-stagger`) — the delay each successive mark takes on top of the entrance band; the per-mark offset clamps at 20 steps, so a large series never trails past the band. focusOffset Focus ring offset. touch Minimum hit-target floor. Follows the POINTER, not the density knob alone (rhythm.css): 44 at comfortable (touch surfaces — never shrink below on touch), 32 at compact, which only ever applies with a fine pointer attached. Density-resolving this is what lets the control set — and a control-bearing table row — densify together (V-16).

Take it with you

The Dart that reproduces what you are looking at. It is a real constructor call, because the configurator edits a real preset — what you copy is what an app can paste.

Screens

Settings

Reach for this for a grouped-settings screen — a micro-label heading over the kit's framed list, repeated per group. No spec of its own; it is the design system's settings reference screen made portable. Switches for instant-effect toggles, never a hand-rolled rows list.

Knobs

Live

Real widgets, built from the real kit. Turn a knob and it rebuilds; the theme bar above applies the design system's own tokens — including anything you changed under Customize — and the device selector uses the same sizes the golden baselines gate on, so what you see here is what CI holds the widget to.

Press Focus on any preview to take it to the full window — at a desktop width that renders most devices at 1:1, which is when the widget's own controls become clickable. The bar always states the device and the scale, so a shrunk preview says it is shrunk. Esc leaves.

Device

screen_settings

Knobs

Theme

Accent Mode Density groups signOut

Adds the global action to the drawer's footer — so, like every drawer action, it acts only below 600. This screen opens at an iPad, where the shell mounts a rail instead.

Assembly

compactNav

Which nav the compact posture mounts — the drawer behind the hamburger, or a bottom bar.

fab

The primary tier, and on a records destination the ONLY loud action the bar's neighborhood has. The scaffold renders it in the thumb zone at every window class; a screen never places it itself.

drawerActions

Actions in the drawer's own footer. The drawer carries them at EVERY window class — at 960 and wider it exists only because they do, since the expanded shell otherwise mounts a standing inline rail instead.

Shows when you open the drawer — the hamburger below 960, an edge swipe at 960 and wider, where the rail head's menu button toggles the rail instead. The actions sit in the drawer's own footer; the resting frame is identical either way. — press Focus to make the preview interactive.

railMark

The app's identity mark, and nothing else — it never opens a picker. At 960 and wider it sits beside the menu button in the rail's head at the same place in both postures, overhanging the collapsed rail so the bar beside it steps in. Below 960 the drawer's header band states it.

scope

The scope — one value of the app's own kind (here an Area) — as the FIRST item of the bar's subtitle, ahead of the meta. With a picker it is a quiet text button with a chevron; on a phone the whole title block opens the picker as a bottom sheet. A pushed record's bar shows it read-only.

footerActions

Global commands with no page ("Send feedback", "Help") pinned in the rail's footer under the footer destinations — the same row as a destination, but never lit and never counted in the destination index.

footerBrand

An organization's or partner's logo at the very bottom of the rail and the drawer — identity, never a control. Collapsed it shows its compact square, or nothing when the host gives none.

Dart for these values

screen_settings()

What it is made of

The widgets this screen assembles, with their full API below. They used to live on a second entry of their own; one thing you choose gets one page.

SettingsScreen widget

Full dartdoc

The FLOORPLAN for grouped settings (`design-system/components/floorplans/SettingsScreen.d.ts`): labeled rows in micro-labeled groups, label start and control end, taking effect instantly. What it always owns: * **The bar, on every state.** In a destinations-mode AppScaffold the chrome projects into the shell's bar through the contributor tier (AppHeaderActions, via RecordsChrome) — search resting as a glyph below 960, as the field at >=960, and as a MODE in between. Pushed (no bar host) the floorplan stands up its own AppHeaderBar carrying title in a body-mode AppScaffold. * **The row grammar** — label + optional ink60 line at the start, the control at the end, `--ctl` minimum height, hairline-separated, under a micro-label on framed paper (SettingsGroup over AppList `framed`). * **The layout by window class** (layout). * **The faces** — error (error + onRetry), loading (structural skeleton rows, never a spinner — loading) and narrowed-to-zero ("No settings match."), each in the body under the chrome, and in the contract's RANK: ERROR > LOADING > NARROWED-TO-ZERO > the rows. There is NO empty face: a settings screen with no groups is an authoring mistake, not a state. * **The scroll** — the rows scroll; in `split` the category list and the rows scroll independently and never the page. ```dart SettingsScreen( title: 'Settings', layout: SettingsLayout.split, groups: [ SettingsGroupSpec.rows(label: 'Sync', rows: [ SettingsRow(key: 'auto', label: 'Auto-sync', sub: 'Every 15 min on Wi-Fi', control: autoSwitch), ]), ], footer: const AppVersionLine(), syncStatus: const SyncStatusButton(), // required; null = no channel ) ``` **Every prop here is the contract's own** since pin e04afca: syncStatus, loading, error and onRetry all landed upstream.

SettingsScreendefault constructor

Knob	Type	Default	What it does
band	FloorplanBand?	null	The surface's ONE TRANSIENT BAND (`SettingsScreen.d.ts`, THE SCREEN CARRIES THE TRANSIENT BAND, 2026-10-03) — a confirmation that clears itself ("Cache cleared") or a refusal the surface must not swallow ("Could not save the setting"). Settings apply instantly with no Save, so a write that fails has…
error	FloorplanError?	null	The load failed: `title` is the cause, `detail` one quiet line under it. Non-null outranks every other face; null means no error.
footer	Widget?	null	Quiet content after the last group — the app version, the licenses link. Never an action slab.
groups *	List<SettingsGroupSpec>	—	The groups, in order; each becomes a micro-labeled group (and a category in SettingsLayout.split).
layout	SettingsLayout column · split	SettingsLayout.column	The layout. Default SettingsLayout.column.
loading	bool	false	The canonical — and here the ONLY — loading signal (THE LOAD FACES). There is no data prop to carry a shorthand: groups is required and an empty list is a legitimate authored value. Default false.
onBack	VoidCallback?	null	The leading back affordance of this floorplan's OWN bar — the pushed posture, which is how a settings screen usually arrives. Null renders NONE. Ignored as a scaffold destination (the shell owns that leading).
onRetry	VoidCallback?	null	The error face's Retry. Null renders the cause with no way out.
presence	Widget?	null	THE PRESENCE STACK (`SettingsScreen.d.ts` `presence`; `Presence.d.ts` EVERY FLOORPLAN CARRIES IT AS A KNOB, steady-core #1331): the `AppPresenceStack` of the scope this screen joins. The HOST builds it; the screen never joins a channel. As a scaffold DESTINATION it is CONTRIBUTED into the shell's…
searchable	bool	false	Whether the bar carries search, narrowing rows by label and sub. Default false.
syncStatus *	Widget?	—	The shell's sync control, last inline-end in THIS screen's own bar when it is PUSHED, which is how a settings screen usually arrives. IGNORED as a destination (the scaffold's own control is that bar's) and nested (`SettingsScreen.d.ts`, corrected 2026-10-20, #1639). REQUIRED BUT NULLABLE: null…
title *	String	—	The view's name, in the headline role — the bar's title in the pushed posture (a destination's title belongs to the shell).

SettingsGroup widget

Full dartdoc

One grouped-settings section: a micro-label heading over the kit's framed AppList — the design system's settings reference screen's one repeating unit (the `SettingsScreen.jsx` Group anatomy; `List.d.ts` `framed` is the grouped-settings posture). Promoted 2026-08-27 from the two hand-copied `_SettingsGroup` helpers (a product app's settings screen and the shell's — the registered harvest candidate); the settings engine's renderer is the third consumer. AppList.shrinkWrap is the sectioned-surface posture: the list sizes to its rows and defers scrolling to the surface's own scroll view.

SettingsGroupdefault constructor

Knob	Type	Default	What it does
children *	List<Widget>	—	The section's rows (conventionally AppListItems).
label *	String	—	The section heading, rendered in the label role (sentence case).

Types its knobs take

These are not things you choose — they are the shapes the knobs above expect. They live under this entry rather than in the navigation for exactly that reason.

FloorplanBand support

A floorplan's ONE TRANSIENT BAND — the contract's `ScaffoldHeaderBandProps` on both floorplans that declare one, stated once here rather than twice. `DetailScreen.d.ts` and `RecordsScreen.d.ts` each type their `band` member as that shared props type and forward it VERBATIM, so a Dart type per…

Field	Type	Default	What it does
actionLabel	String?	null	Label for the ONE action beside message (the Undo pattern).
message	String?	null	The transient message. Null draws nothing.
onAction	VoidCallback?	null	Callback for that single action.

SettingsGroupSpec support

One group of settings rows — a micro-labeled section, and a category in the `split` layout. Named `…Spec` because SettingsGroup is the kit PATTERN this floorplan renders it with: the value type and the widget cannot share one name.

Field	Type	Default	What it does
content *	Widget	—
label *	String	—	The section heading, in the label role — sentence case, rendered as written. The group's identity, unique across the screen's groups.

Field	Type	Default	What it does
label *	String	—	The section heading, in the label role — sentence case, rendered as written. The group's identity, unique across the screen's groups.
rows *	List<SettingsRow>	—

Where it lives

Class	File
SettingsScreen	packages/app_widgets/lib/src/floorplans/settings_screen.dart
SettingsGroup	packages/app_widgets/lib/src/patterns/settings_group.dart