bc_ui 0.6.1
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A Flutter design system porting heroui-native 1:1 — 60+ token-driven components, light and dark, on a Material 3 base.
0.6.1 #
App header
- The compact toolbar title goes from 16px to 20px semibold. It sat beside a
20px back chevron, which left the arrow as the loudest thing in the bar, and
a header title should lead over the control that leaves the screen. On
BCSliverAppHeaderit read worse still: the compact title is what the 30px large title folds into, and at 16px the fold gave up more than the scroll had earned. BCAppHeaderand the collapsedBCSliverAppHeadershare one toolbar, and the large title has always collapsed into the compact title, so the two move together. Splitting them would have put a 16px title on one screen and a 20px title on the next.- Nothing in the API changes, which is why this is a patch — but it is visible on every screen using either header, and a long title will ellipsize a little sooner than it did. The 56px toolbar still has the room: a 20px title over a 12px subtitle comes to about 41px.
0.6.0 #
Phone field
BCPhoneFieldgainsinline, for the long forms where a stack of boxed fields is more furniture than the page can carry. It lays the field out as a row of an iOS grouped form: no box, no shadow, no focus ring, the label beside the number rather than above it, and the country button without its divider — that hairline marks the edge of a box, and there is no box now. The row is padded the (20, 6, 6, 6) SwiftUI'sFormuses, which is whatCupertinoFormRowuses too, so the field lines up with the native rows above and below it.- Drop it straight into a
CupertinoFormSection's children; wrapping it in aCupertinoFormRowas well would pad it twice.variantis ignored whileinlineis on, and the description and the validation message still land under the row, left-aligned, where the section expects them. - Nothing else about the field changes: the country sheet, the live validation, the trunk-prefix stripping and the paste-an-international-number handling all behave as they do in a boxed field.
- The PhoneField showcase gains an In a Cupertino form variant — the field
between two
CupertinoTextFormFieldRows, which is the case the above is about.
Input
BCInputVariant.plain— no background, no shadow, no focus ring and no horizontal padding, just the text with its prefix and suffix. It is whatinlineis built on, and it is for any field sitting inside chrome something else already drew: a form row, a table cell, a toolbar. That container then owns the shape, the padding, and telling the user the value is wrong.- Adding a value to
BCInputVariantis why this is a minor release rather than a patch: an exhaustiveswitchover it in your own code now needs a third arm. The fields that read the enum by comparison —BCDateField,BCTimeField,BCDateTimePicker— treatplainassecondary, and are otherwise untouched.
0.5.0 #
Tokens
overlayno longer duplicatessurface. The two held the same value in both themes, so anything painted on a sheet, dialog, menu or popover — aBCCard, aBCListGroup, a text field — had no edge against the panel beneath it. In dark the card vanished outright, since dark surfaces carry neither shadow nor border and the fill was the only cue.overlayis now#F7F7F8in light and#1F1F23in dark. Sheets and dialogs shift tone slightly as a result, which is why this is a minor release rather than a patch.- Light and dark separate in opposite directions, deliberately. Light
surfaceis already pure white, so the sheet moves down and cards float lighter on it, the way a grouped table reads on iOS; dark has headroom abovesurface, so the sheet moves up.overlayForegroundandsegmentwere checked against the new values and both still contrast comfortably — neither changed. - Custom accents are unaffected: nothing is derived from
overlay, soBCThemeOverridesrecomputes exactly what it did before.
Toast, Navigation drawer
BCToastand the modalBCNavDrawernow paintoverlayrather thansurface. Both float above the page wearing the overlay shadow, so they belong with the dialogs and sheets; they only matched before because the two tokens happened to be equal. The permanent drawer keepsbackground, and the bottom nav, toolbar and app header stay onsurface— those read as page chrome, not overlays.
0.4.3 #
Toast
- A bottom toast no longer comes up behind the on-screen keyboard, where it
was all but invisible. While the keyboard is up,
bottomInsetis measured from the top of the keys instead of the safe area, and the card rides the keyboard down again when it closes. Top toasts are unaffected. - The Toast showcase gains a With the keyboard up variant — a focused field and a toast fired behind it, the case the above is about.
0.4.2 #
Dialog
- A modal with a form in it no longer disappears behind the on-screen keyboard. The dialog is laid out in the band above the keyboard, and content taller than that band scrolls — focusing a field brings it into view instead of leaving the caret under the keys, so six fields in a modal stay reachable from the first to the last.
BCDialog.showgainsisSwipeable(on by default): a downward drag carries the dialog with the finger the way a bottom sheet does, rubber-bands when dragged the other way, and either springs back or keeps the momentum of the throw — the drag physicsBCToastalready used, rather than a gesture that merely triggers the close animation. While the content is tall enough to scroll, the scroll takes the drag.- The Dialog showcase gains a Form dialog variant — six fields and a password, the case both of the above are about.
0.4.1 #
Password field
BCPasswordInputgains aprefix, the leading slotBCInputandBCTextFieldInputalready exposed. The visibility toggle keeps the trailing slot, so a password field can now carry a leading icon (a lock, say) like every other input.
0.4.0 #
Phone field
BCPhoneField— an international phone input. The field's prefix is a tappable flag and dial code that opens the searchable country list, and the number groups itself as you type.- Leave
initialCountrynull and the field opens on the device's own region, the way a web form readsnavigator.language— a phone set to Bangladesh opens on Bangladesh.fallbackCountrycovers a device that reports no usable region (a bareenlocale, or a UN M.49 region likees_419), andBCPhoneField.deviceCountry()exposes the lookup for your own state. This is the phone's configured region, not where it physically is. - Validation is libPhoneNumber's metadata rather than a regex, so it knows
each country's real lengths and prefixes:
+1 555 000 0000is rejected where a digit count would pass it.onChangedhands back aBCPhoneNumberwithe164,national,international,isoCodeandisValidon every keystroke;onValidityChangedfires only when validity flips, so a submit button can be driven straight from it. - Nothing is blocked while you type — a half-typed number is not an error, so
the message waits for blur (or for a caller-supplied
errorText, which always wins).invalidNumberText: nullkeeps the field silent and reports through the callback only. - The country's trunk prefix is dropped as you type, because it is not part
of an international number: a UK number beside
+44is7400 123456, never07400 123456. - The picker is authoritative about the country.
+1covers 25 countries and no parser can tell a US number from a Canadian one, so whatever the user picks wins over what the metadata guesses. - This adds bc_ui's first runtime dependency,
phone_numbers_parser. It is pure Dart with no platform channels, and its own only dependency ismeta.
Select
triggerBuilderreplaces aBCSelect's trigger wholesale while keeping its press feedback, tap handling, disabled dimming and popover anchoring.matchTriggerWidth(defaulttrue, unchanged behaviour) stops a narrow custom trigger from squeezing the popover list to its own width.triggerFeedback(defaultBCPressFeedback.scale, unchanged behaviour) because the scale is width-compensated and pops harder on a small inline trigger than on the default one.
Input
autofillHintsonBCInput, forwarded to the underlying field. Without it the OS keychain and iOS's one-tap SMS code were unreachable.
0.3.0 #
Accordion
BCAccordionports heroui-native's Accordion: a column of collapsible sections, one open at a time or several withselectionMode: BCAccordionSelectionMode.multiple. Compose each section fromBCAccordionItem,BCAccordionTriggerandBCAccordionContent;variant: BCAccordionVariant.surfacewraps the stack in a rounded surface and insets the hairline separators, andhideSeparatordrops them.- State is yours: pass
value+onValueChange, or hand it aBCAccordionController— heroui's uncontrolleddefaultValueis that controller'sinitialValue.isCollapsible: falsekeeps whatever is open from closing. - Content springs open on heroui's layout-transition spring while it fades in over 200ms, and the chevron rotates counter-clockwise to match. The body is built on first expand and dropped once a collapse settles, so lift any state that lives inside it. Reduced-motion settings skip all three animations.
BCAccordionIndicatorrenders the chevron; give it achildto replace it, in which case it is not rotated for you — read the state withBCAccordionItem.isExpandedOf(context), the equivalent of heroui'suseAccordionItem()hook.
0.2.1 #
Speed dial
BCSpeedDialopens into the root overlay rather than the nearest one. Inside a nestedNavigator— a shell branch, a tab view — the nearest overlay covers only that screen's slot, so the backdrop stopped short of any surrounding chrome: a bottom navigation bar kept painting over the open dial, undimmed, and still took taps.
0.2.0 #
App header
filledIconButtonsonBCAppHeaderandBCSliverAppHeaderrenders everyBCHeaderIconButtonin the leading and actions slots filled, so a screen picks the style once instead of at each button. It reaches the back button the header implies, which no call site could style before.- Breaking:
BCHeaderIconButton.filledis nowbool?and defaults to null, which defers to the enclosing header (and to false where there is none). Passingfilled: trueorfilled: falseis unchanged and still wins over the header; only code that reads the field needs a null check. - The header's inherited style is now installed unconditionally. It used to
be skipped unless
foregroundColorwas set, so a header that only wanted the default colours had no channel to its buttons at all.
0.1.0 #
Select
- Three presentations: the anchored
popoverit always had, abottomSheetwith room for a long list, and awheelfor short ordered ones, committed with Done. Set withpresentation. - Search.
isSearchablefilters on label and description;onSearchreplaces that with your own lookup — debounced bysearchDebounce, awaited with a spinner, and rendered exactly as returned, so it can hit the network. - Pagination.
onLoadMorefires as the list nears its end, once per page;isLoadingMoreshows a spinner under the last row. - Rows take
leadingandtrailingwidgets, a per-itemonTapthat runs alongside the value change, andisDisabled.itemBuilderhands the whole row over, selection state included. emptyPlaceholderandmaxListHeightfor the rest.
The version jumps to 0.1.0 so ^0.1.0 resolves the way callers expect;
^0.0.x had pinned them to a single patch.
Agent skill
skills/bc-ui/teaches an AI agent to use the library — setup, the naming conventions, a routing table to per-category references, and the traps that fail silently. Install withnpx skills add binary-castle/bc-ui-flutter, or copy it into.claude/skills/; it ships in the package either way.- Its references come out of
tool/gen_api_doc.py, the same script that writesdoc/api.md, so they cannot drift.--checkfails when either is stale and--check-coveragelists public symbols nothing documents.
Fixes
- The generated prop tables dropped every named parameter of a constructor that
led with a positional one, so
BCTextwas documented as taking onlydata, andBCLabel,BCDescription,BCFieldErrorandBCTextFieldLabelwere each missing their flags.BCTextFieldError's argument was listed astextwhen it ismessage. All now generated correctly, along with the previously undocumentedBCTextWeight,BCInputOTPSlot*,BCSkeleton*Animation,BCNavDrawerItemandBCAnchoredOverlayController. - The README's License section still said the license was a placeholder, left over from before the package was licensed. It now states Apache-2.0 and credits heroui-native. pub.dev's own metadata was already correct.
0.0.2 #
- Fixed the README on pub.dev: images and repository links are absolute now.
pub.dev strips raw
<img>tags and drops repo-relative links, so the banner, the light/dark screenshots and every entry in the component table rendered without them. - Install instructions now point at the published package rather than a local path dependency.
0.0.1 #
First release — a Flutter port of heroui-native, covering 50+ components on a Material 3 base.
Foundation
BCTheme.light()/BCTheme.dark()return aThemeData, so Material widgets keep working alongside bc_ui.- 64 semantic colour tokens in
BCThemeExtension, precomputed from heroui-native's oklch sources including everycolor-mixderived hover and soft shade.BCThemeOverridesrecomputes the accent-derived tokens from a single colour. - Continuous (squircle) corners via
RoundedSuperellipseBorder, layered surface and overlay shadows, and the ported motion constants inBCMotion. - Inter is bundled; no font setup.
Components
- Navigation —
BCAppHeader,BCSliverAppHeader,BCBottomNav,BCNavRail,BCNavDrawer,BCToolbar,BCTabswith a swipeableBCTabView. - Actions —
BCButton,BCSocialAuthButton(10 providers, vector brand marks, no assets),BCLinkButton,BCCloseButton,BCFab,BCSpeedDial,BCToggleButton, and theBCPressablefeedback engine. - Containers and data display —
BCSurface,BCCard,BCListGroup,BCFlipCard,BCScrollShadow,BCAvatar,BCChip,BCRibbon,BCTagGroup,BCSkeleton,BCSpinner,BCProgress,BCLoadingOverlay,BCRating,BCEmptyState. - Forms and selection —
BCInput,BCTextField,BCTextArea,BCPasswordInput,BCSearchField,BCInputOTP,BCDateField,BCTimeField,BCDateTimePicker,BCSelect,BCControlField,BCCheckbox,BCRadioGroup,BCSwitch,BCSlider,BCRangeSlider. - Overlays —
BCDialog,BCPopover,BCMenu, andBCToastwith top/bottom placement and an interactive swipe-to-dismiss.
Full prop tables in doc/api.md; the example app has one screen per component.