c2n/web-componentsv1.0.26
OverviewGetting startedComponentsIconsGuidesExamplesBlogs
OverviewGetting startedComponentsIconsGuidesExamplesBlogs
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Camera Capture

A camera viewfinder for documents, cards and faces: a framing guide, quality hints, auto-capture when steady, retake or keep, front/back switch and a list of required shots. Each photo is a Blob.

Attributes

NameTypeDefaultDescription
guideCameraGuidenoneThe framing guide: none, document, card or face. A shot of shots may choose its own.
facingCameraFacingenvironmentThe camera to open: environment (the back one, the default) or user (the front one). Switching camera updates it.
shotsCameraShot[][]The photos to take, in order: [{ "id": "front", "label": "Front of the card", "guide": "card" }, …]. As an attribute, JSON. Empty takes a single photo. Setting a list with other content starts it over; the same content again (a framework re-rendering a new array literal) changes nothing.
auto-capturebooleanfalseTakes the photo by itself once the picture has no problem and holds steady for steady-time. The shutter still works.
steady-timenumber1200How long, in milliseconds, the picture must hold steady before auto-capture takes it.
cropbooleanfalseKeeps only the area inside the guide in the photo. Without it, the photo is the camera's whole frame.
image-typestringimage/jpegThe image format of the photos. A browser that cannot write it gives PNG.
image-qualitynumber0.92The quality of a JPEG or WebP photo, from 0 to 1.
autostartbooleanfalseOpens the camera as soon as the element is on the page, without waiting for the Start camera button.
labelstring—The accessible name of the component. Empty uses the built-in "Camera".

Slots

NameDescription
idleReplaces the screen shown before the camera starts (an icon, a sentence and the Start camera button). Call start() from your own button.
errorReplaces the screen shown when the camera cannot start. Read the reason from the camera-error event.
guideReplaces the drawing of the framing guide; the guide's box (part="guide") stays, and is the area crop keeps.
actionsAction zone beside the shutter, for the app's own commands: upload a file instead, cancel.
doneReplaces the summary shown once every photo is taken (the photos, each with a Retake button). The events do not bubble: listen on the element itself.

Events

NameTypeDescription
camera-startCustomEvent<{ facing: 'user' | 'environment' }>Fired when the camera shows its first picture.
camera-errorCustomEvent<{ kind: 'denied' | 'not-found' | 'busy' | 'unsupported' | 'ended' | 'unknown'; error: unknown }>Fired when the camera cannot start, or stops while open (ended: unplugged, permission revoked); kind says why.
captureCustomEvent<CameraPhoto>Fired when a photo is taken, before the user keeps or retakes it. detail.blob is the image.
retakeCustomEvent<{ id: string; index: number }>Fired when the user throws a photo away to take it again.
acceptCustomEvent<CameraPhoto>Fired when the user keeps a photo.
completeCustomEvent<{ photos: CameraPhoto[] }>Fired once every shot has a photo kept; the camera then closes.

CSS parts

Shadow DOM styling hooks used with ::part(name). Prefer CSS custom properties when they cover the change.

NameDescription
stageThe dark box that holds the picture and the idle, error and done screens.
videoThe camera picture.
guideThe box of the framing guide, wrapping the guide slot and its default drawing; crop keeps its area.
frameThe default drawing of the guide.
hintThe instruction or quality hint over the picture.
previewThe photo under review.
shotsThe list of required shots.
shotOne shot of the list.
controlsThe bar under the picture.
actionsThe wrapper of the actions slot.
shutterThe button that takes the photo.
switchThe button that switches camera, shown when the device has more than one.
buttonThe Start camera, Try again, Retake and Use photo buttons.
acceptThe Use photo button.
idleThe region of the idle screen, wrapping the idle slot and its default content.
errorThe region of the error screen, wrapping the error slot and its default content.
doneThe region of the summary, wrapping the done slot and its default photos.
thumbnailA photo of the summary.

CSS custom properties

Grouped by semantic target and state from --c2-<component>__<target>__<state>--<property>. Click a group to collapse it; click a name to copy it.

NameTypeDefaultDescription
c2-camera-capture
--c2-camera-capture--widthlength480pxWidth of the component, never wider than its container; 100% fills it.
c2-camera-capture > stage
--c2-camera-capture__stage--aspect-ratioaspect-ratio4 / 3Shape of the picture; the camera is cropped to fill it.
--c2-camera-capture__stage--backgroundbackground#18181bBehind the picture, and of the idle, error and done screens. Dark in both themes, like a viewfinder.
--c2-camera-capture__stage--colorcolor#fafafaText on the stage.
--c2-camera-capture__stage--border-radiusborder-radius8px
c2-camera-capture > stage > muted
--c2-camera-capture__stage__muted--colorcolor#a1a1aaSecondary text on the stage.
c2-camera-capture > guide
--c2-camera-capture__guide--widthlength82%The most of the stage's width the document and card guides take. The guide keeps its shape and fits both this and the height.
--c2-camera-capture__guide--heightlength86%The most of the stage's height a guide takes.
--c2-camera-capture__guide--border-radiusborder-radius14pxCorners of the document and card guides.
--c2-camera-capture__guide--border-widthpixel3px
--c2-camera-capture__guide--border-colorcolor#ffffff
c2-camera-capture > guide > face
--c2-camera-capture__guide__face--widthlength52%The most of the stage's width the face oval takes.
--c2-camera-capture__guide__face--aspect-rationumber0.75
c2-camera-capture > guide > document
--c2-camera-capture__guide__document--aspect-rationumber0.707Width over height, as a number: 0.707 is A4 upright. A cheque wants about 2.3, a receipt about 0.4.
c2-camera-capture > guide > card
--c2-camera-capture__guide__card--aspect-rationumber1.586An ID-1 card: a bank card, a driving licence.
c2-camera-capture > guide > ready
--c2-camera-capture__guide__ready--border-colorcolor#16a34aThe guide while the picture is fine.
c2-camera-capture > guide > scrim
--c2-camera-capture__guide__scrim--colorcolorrgba(0, 0, 0, 0.45)Darkens the picture outside the guide.
c2-camera-capture > hint
--c2-camera-capture__hint--backgroundbackgroundrgba(24, 24, 27, 0.72)
--c2-camera-capture__hint--colorcolor#fafafa
--c2-camera-capture__hint--font-sizefont-size14px
--c2-camera-capture__hint--border-radiusborder-radius999px
--c2-camera-capture__hint--displaydisplayblocknone hides the instructions and quality hints.
c2-camera-capture > hint > issue
--c2-camera-capture__hint__issue--backgroundbackgroundrgba(180, 83, 9, 0.92)The hint while the picture has a problem.
c2-camera-capture > shot
--c2-camera-capture__shot--colorcolor#71717a
--c2-camera-capture__shot--font-sizefont-size12px
c2-camera-capture > shot > current
--c2-camera-capture__shot__current--colorcolor#18181b
--c2-camera-capture__shot__current--font-weightfont-weight600
c2-camera-capture > mark
c2-camera-capture > mark > done
--c2-camera-capture__mark__done--backgroundbackground#16a34aThe disc behind the check of a shot already taken.
--c2-camera-capture__mark__done--colorcolor#ffffffThe check of a shot already taken.
c2-camera-capture > screen
--c2-camera-capture__screen--font-sizefont-size14pxText of the idle, starting and error screens.
c2-camera-capture > controls
--c2-camera-capture__controls--paddinglength12px 0 0
--c2-camera-capture__controls--gaplength12px
c2-camera-capture > shutter
--c2-camera-capture__shutter--sizepixel60px
--c2-camera-capture__shutter--backgroundbackgroundrgb(2, 101, 220)
--c2-camera-capture__shutter--ring-colorcolor#ffffffThe inner ring of the shutter.
c2-camera-capture > shutter > hover
--c2-camera-capture__shutter__hover--backgroundbackgroundrgb(1, 84, 184)
c2-camera-capture > shutter > progress
--c2-camera-capture__shutter__progress--colorcolor#16a34aThe ring that fills while auto-capture waits for a steady picture.
c2-camera-capture > switch
--c2-camera-capture__switch--sizepixel40pxThe Switch camera button.
c2-camera-capture > button
--c2-camera-capture__button--backgroundbackground#ffffff
--c2-camera-capture__button--colorcolor#18181b
--c2-camera-capture__button--borderborder1px solid #bcbcc6
--c2-camera-capture__button--border-radiusborder-radius6px
--c2-camera-capture__button--heightpixel36px
--c2-camera-capture__button--font-sizefont-size14px
--c2-camera-capture__button--font-weightfont-weight500
c2-camera-capture > button > hover
--c2-camera-capture__button__hover--backgroundbackground#f4f4f5
c2-camera-capture > accept
--c2-camera-capture__accept--backgroundbackgroundrgb(2, 101, 220)The Use photo and Start camera buttons.
--c2-camera-capture__accept--colorcolor#ffffff
c2-camera-capture > accept > hover
--c2-camera-capture__accept__hover--backgroundbackgroundrgb(1, 84, 184)
c2-camera-capture > thumbnail
--c2-camera-capture__thumbnail--border-radiusborder-radius6px
--c2-camera-capture__thumbnail--min-widthlength140pxThe summary fits as many photos of at least this width per row as it can.
c2-camera-capture > thumbnail > button
--c2-camera-capture__thumbnail__button--heightpixel28pxThe Retake button on a photo of the summary.
--c2-camera-capture__thumbnail__button--font-sizefont-size12px
c2-camera-capture > focus
--c2-camera-capture__focus--outlineoutline2px solid rgba(2, 101, 220, 0.4)

Text and languages

The text the component shows, in English. It shows another language when the app adds one with addTranslations, under camera-capture, and the nearest lang asks for it; any message not translated stays in English. {0}, {1}… stand for the values a message carries. Languages guide.

KeyEnglishValues
labelCamera—
idleTake a photo with your camera.—
startStart camera—
startingStarting the camera…—
captureTake photo—
switchCameraSwitch camera—
retakeRetake—
acceptUse photo—
retakeShotRetake {0}{0} label
previewPhoto to review—
shotPhoto {0}{0} index
shotsPhotos to take—
progressPhoto {0} of {1}: {2}{0} index
{1} total
{2} label
shotDonetaken—
doneAll photos taken.—
guideDocumentFit the document inside the frame.—
guideCardFit the card inside the frame.—
guideFaceCentre your face in the oval.—
darkMore light needed.—
glareAvoid glare: tilt away from the light.—
movingHold the camera steady.—
blurryThe picture is blurry: move closer or wait for focus.—
holdStillHold still…—
capturedPhoto taken.—
errorDeniedCamera access was denied. Allow it in the browser settings, then try again.—
errorNotFoundNo camera was found on this device.—
errorBusyThe camera is in use by another application.—
errorUnsupportedThis browser cannot use a camera on this page.—
errorEndedThe camera stopped. Check that it is connected, then try again.—
errorUnknownThe camera could not start.—
retryTry again—
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chartRanked levels of a whole, stacked from a narrow apex to a wide base, where one row is one level.ChartQR CodeGenerate accessible, themeable QR codes locally as crisp SVG graphics.Data displayQuantity PickerSeveral labelled counters behind one summary ("2 adults, 1 child"), with limits per counter and in total.InputsQuery InputA key:value query field whose filters are chips you can switch off or remove, with syntax highlighting and field and value suggestions, as in Datadog, GitHub and Sentry.InputsQuestionnaireA multi-step single- and multiple-choice flow with validation, shortcuts and form submission.InputsQuick time menuA menu of quick times (Later today, Tomorrow, Next week), each showing when it falls, plus a date and time picker for anything else.InputsRadar chartCompare several profiles across the same set of normalized indicators.ChartRadial bar chartConcentric rings, each filling toward its own goal: activity rings, a readiness score, a budget per category.ChartRadioRadio options built on native inputs, grouped into one value with keyboard navigation.InputsRateAccessible star rating input with hover preview, keyboard control and optional half values.InputsReaction BarEmoji reactions with counts under a message or comment, toggled by the current user, with a picker to add more.ChatRecurrence EditorEdits how something repeats: every N days, weeks, months or years, weekdays, the third Tuesday, an end; reads and writes RRULE or cron.InputsRelative TimeTime relative to now, such as "3 minutes ago" or "in 2 days", that keeps itself current and shows the full date on hover.Data displayReorder ListReorder a vertical queue with pointer or keyboard input while the application owns persistence.Data displayRich Text EditorA compact formatted-text field for comments, replies and email bodies: bold, links, lists, quotes and code, a one-tab-stop toolbar, and a Markdown value.InputsSankey chartQuantities moving through stages, where one row is one flow and each band is as wide as what it carries.ChartSave BarA floating bar that appears while a form has unsaved changes, with Discard and Save.LayoutScatter chartAn ECharts scatter plot for finding relationships, clusters and outliers across two numeric measures.ChartSchedulerResource timeline: people, rooms or machines down the side, time across the top, each booking a bar you can drag.PlanningScroll AreaA scroll container with themed scrollbars and shadows on the edges with more content beyond them.LayoutScroll ProgressHow far the reader got: a bar that fills or a ring that closes as the page or a container scrolls.FeedbackSearch FieldA search box with a debounced search event, a clear button, a keyboard shortcut hint and recent searches.InputsSecret FieldShows an API key or other secret masked, with buttons to reveal it, copy it and ask for a new one.InputsSelectDropdown that pairs a themeable trigger with an anchored list of c2-list-item options.InputsSelection ToolbarA toolbar that appears over the text a reader selects: Ask AI, Comment, Bold, or any action the app slots in.Editors & viewersSeparatorHorizontal or vertical rule with an optional label, for dividing content and toolbars.LayoutShare SheetShare a link anywhere: copy it, send it to email or a network, scan it as a QR code, or hand it to the device’s own share sheet.FeedbackSheetDialog pinned to an edge of the screen, for content that complements the page rather than interrupting it.FeedbackShortcutKeyboard shortcuts for a whole application from one element: each binding fires an action event, runs a handler or activates a target.InputsSide NavResponsive navigation drawer beside the page: pushes the content on large screens, slides over it with a backdrop on small ones.NavigationSignature PadA box to sign in with a mouse, a pen or a finger, with undo and clear, that exports the signature as SVG or an image.InputsSkeletonPlaceholder block standing in for content that has not arrived, in three shapes and three animations.FeedbackSkip LinkA "Skip to main content" link that appears when a keyboard user tabs onto it and moves focus into the main content.NavigationSliderRange input with a themeable track, thumb, step ticks and value bubble.InputsSparklineA chromeless trend line sized for a table cell, a list row or the trend slot of a c2-stat.ChartSpinnerCircular progress indicator, indeterminate or showing a value, with optional text.FeedbackSplit ButtonA main action with a caret menu of alternatives, such as "Send ▾", or a remembered choice like a merge method.ButtonsSplit PanelTwo panels separated by a divider the user drags, or moves with the keyboard, to resize them.LayoutSpreadsheetA small editable grid with basic formulas, for budgets, quotes, price lists and score sheets.Editors & viewersStatDisplays a KPI with an optional icon, trend and supporting description.Data displayState TimelineOne band per series, coloured by the discrete state it was in over time: service health, CI runs, host power.ChartStatus LightColoured dot plus a short label for the state of something, such as Live, Building or Failed.Data displayStatus PanelCommunicate empty states, operation outcomes and recoverable errors with clear next steps.FeedbackStepsThe trace of a task as it runs, or a stepper across the top of a view: statuses, durations, stages that open while they work, and steps the reader can select.Data displayStickyPins content to the top or bottom of its scroll container and tells you when it is stuck, optionally hiding it while the reader scrolls down.LayoutStreaming TextPlain text that arrives in bursts, such as an LLM answer, revealed at a steady pace behind a caret.ChatSunburst chartA hierarchy drawn as rings, the whole at the centre and each ring splitting its parent: budgets, disk usage and org spend, with click to zoom.ChartSwipe ActionA list row that slides sideways to reveal actions behind it, as in a mail or task list on a phone.LayoutSwitchOn/off toggle on a native switch input, with label, description and thumb icons.InputsTableVirtualized data grid with declarative columns, sorting, selection, pinning and resizing.Data displayTable Of ContentsAn "On this page" navigation that lists the headings of a document, nests them by level and highlights the section being read.NavigationTabsTab strip that shows one content panel at a time.NavigationTag InputTurns typed or pasted text into removable tags — recipients, keywords, labels — with configurable delimiters, parsing and validation.InputsTerminalAn interactive prompt for commands your app answers: history, Tab completion, streaming output, Ctrl+C, ANSI colours.Editors & viewersText EffectAnimated text for a hero line or a status: rotating words, a typewriter, a scramble, a shimmer or a staggered reveal.Data displayText FieldSingle-line input with icon slots, clear button, helper and error text, and a character counter.InputsTextareaMultiline text input with resizing, helper and error text, and a character counter.InputsTheme SelectColour-theme switcher: click to step to the next mode, hover for the full menu.InputsTime InputForm-associated time-of-day input with a scroll-wheel picker, step and range constraints, helper text and error states.InputsTime Range PickerDashboard time range control: searchable quick ranges, an absolute range typed or picked on a calendar, time zone, shift and zoom, and auto-refresh.InputsTime Slot PickerPick a free time from someone's calendar: a row of days, then that day's times grouped into morning, afternoon and evening.InputsTimelineA vertical sequence of dated events on a connected rail: order history, activity feeds, changelogs.Data displayToastNotification cards and a manager for stacked, queued notifications with independent lifetimes.FeedbackTodo ListA to-do list with the feel of paper: hand-drawn ticks, notes, highlighters, swipe and drag, and a remembered look.PlanningToggletipA small ⓘ button that opens a help bubble on click or tap; the bubble can hold links and is announced to screen readers.FeedbackTooltipContextual hint shown when its target is hovered or focused, rendered in the top layer.FeedbackTourA guided product tour that spotlights one element at a time and explains it in a panel beside it.FeedbackTrace WaterfallShow the spans of a distributed trace as a tree, each with a duration bar on one shared time axis.Data displayTranscriptSpeaker-labelled, timestamped segments synced to playback: click to seek, the word playing marked, search built in.Data displayTreeHierarchical tree view with expansion, selection, checkboxes and lazy loading.Data displayTree SelectA dropdown for picking one or several rows from a hierarchy, with checkboxes, search and a form value.InputsTreemap chartA whole split into nested rectangles, each sized by its value: market maps, budgets and disk usage.ChartTruncateClamps text to a number of lines, with an optional Show more button.Data displayUploadDrag-and-drop file selection with validation, upload progress, retry, cancellation, and attachment results.InputsVideo GridLays out the tiles of a call as a grid, a spotlight or a sidebar, every tile as large as the space allows.LayoutVideo PlayerThemed controls over a real video: chapters on the seek bar, a thumbnail while scrubbing, captions, speed, picture-in-picture and full screen.Data displayVideo TileOne participant of a call: their video or avatar, with their name, a live microphone meter and status badges.Data displayView OptionsThe Display popover of a collection: layout, grouping, ordering on several levels, Show switches and visible properties, reported as one plain value.InputsVirtual ListWindowed list with built-in search, sorting, selection and an async data source.Data displayVisually HiddenText for screen readers only: kept in the accessibility tree, drawn nowhere, optionally shown while it holds focus.LayoutWaterfall chartA running total bridged by the steps that move it, where one row is one step and totals mark where the bridge lands.ChartWeek PlannerWeekly schedule with time blocks: a typical week with optional odd and even weeks, or a dated week the user edits.PlanningWheel PickeriOS-style scroll wheels to pick a time, a height, a weight or any value from a short list, by swipe, scroll, click or keys.InputsWorking IndicatorA live "work in progress" line: animated mark, shimmering label, trailing dots and elapsed time.FeedbackFeather Icons287 open-source Feather icons, one web component each.IconsMat Icon2,234 Material Icons ligatures rendered through a single element.IconsPhosphor Icons1,512 flexible icons in six weights, one web component each.IconsSymbols157 themeable spot illustrations for empty states, status panels, onboarding and error pages.IconsTask icons191 duotone icons for to-do items: work, home, health, sport, learning, food, money, travel and more.IconsThemingTheme every c2n component from a handful of design tokens with @c2n/theme, or reach for any component variable directly.GuideLanguagesComponents show their text in English; add your app’s languages as one JSON object, picked by the nearest lang.GuideFrameworksUse the components from React, Vue, Angular, Svelte, Lit or plain HTML — typed events, generated template types, and the one piece of configuration each framework needs.GuideUsing c2n in an applicationThe workflow behind every c2n app: load the theme once, use c2-* tags directly, and turn every repeated pattern into a small variant or composed component.GuideAI toolsGive Claude Code, Codex, Google Antigravity or GitHub Copilot the c2n skill, live component APIs, examples and application conventions.GuideNo components match.
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