src/components/ui/slider.tsx import React, { useEffect, useMemo, useRef, useState } from 'react' ;import { Animated, PanResponder, Pressable, StyleSheet, Text, View, type AccessibilityActionEvent, type GestureResponderEvent, type StyleProp, type TextStyle, type ViewStyle, } from 'react-native' ; import Svg, { Circle, Path } from 'react-native-svg' ; import { alpha, motion, readableOn, useKit } from '@/lib/kit' ; /** * - `default` — thin track with a round thumb (iOS / Material). * - `bar` — a tall rounded bar with a flat fill and no thumb, like the iOS Control Center volume * bar. Put an `icon` (and the value, with `showValue="always"` ) inside it. * - `stepped` — a slightly thicker track with a dot at every step; the thumb snaps between them. */ export type SliderVariant = 'default' | 'bar' | 'stepped' ;export type SliderSize = 'sm' | 'md' | 'lg' ;export type SliderValue = number | [number, number];export type SliderMark = number | { value: number; label?: string };/** Built-in icons for `leftIcon` / `rightIcon` / `icon` . */ export type SliderIconName = 'volume-low' | 'volume-high' | 'volume-off' | 'sun-low' | 'sun-high' | 'minus' | 'plus' ;/** A built-in icon name, any node, or a function that receives the colour to draw in. */ export type SliderIconProp = SliderIconName | React.ReactNode | ((color: string) => React.ReactNode); interface SliderBaseProps { min?: number; max?: number; /** Snap interval. 0 makes the slider continuous. */ step?: number; /** See `SliderVariant` . */ variant?: SliderVariant; size?: SliderSize; /** `true` draws a dot at every step (default for `stepped` ); or pass values with optional labels. */ marks?: boolean | SliderMark[]; /** * Value tooltip above the thumb: only while dragging, always, or never. * Default `drag` , or `never` for the `bar` variant — where `always` shows the value inside the bar. */ showValue?: 'drag' | 'always' | 'never' ; formatValue?: (value: number) => string; /** Shows the formatted min and max under the track. */ showMinMax?: boolean; /** Custom text under the start of the track (implies `showMinMax` ). */ minLabel?: string; /** Custom text under the end of the track (implies `showMinMax` ). */ maxLabel?: string; /** Icon before the track. Built-in names step the value down when tapped. */ leftIcon?: SliderIconProp; /** Icon after the track. Built-in names step the value up when tapped. */ rightIcon?: SliderIconProp; /** `bar` only: an icon inside the start of the bar. It changes colour as the fill passes over it. */ icon?: SliderIconProp; /** Draws the active fill thicker than the track (`default` variant). */ thickFill?: boolean; /** Bar heights drawn above the track (e.g. price distribution). Bars inside the selection use the accent. */ histogram?: number[]; /** Height of the histogram in points. */ histogramHeight?: number; disabled?: boolean; /** Fill colour (default : theme accent). */ accent?: string; accessibilityLabel?: string; style?: StyleProp<ViewStyle >; /** The inactive track. */ trackStyle?: StyleProp<ViewStyle >; /** The active fill (e.g. `{ backgroundColor }` ). */ fillStyle?: StyleProp<ViewStyle >; /** The round thumb (`default` / `stepped` ). */ thumbStyle?: StyleProp<ViewStyle >; /** The value text: tooltip, in-bar value and min / max labels. */ labelStyle?: StyleProp<TextStyle >; } /** One thumb: `value` is a number. */ export interface SliderSingleProps extends SliderBaseProps { range?: false ; value?: number; defaultValue?: number; /** Fires whenever the (stepped) value changes while dragging, tapping or via accessibility actions. */ onValueChange?: (value: number) => void; onSlidingStart?: (value: number) => void; onSlidingComplete?: (value: number) => void; } /** Two thumbs selecting a span: `value` is `[from, to]` . */ export interface SliderRangeProps extends SliderBaseProps { range: true ; value?: [number, number]; defaultValue?: [number, number]; onValueChange?: (value: [number, number]) => void; onSlidingStart?: (value: [number, number]) => void; onSlidingComplete?: (value: [number, number]) => void; } export type SliderProps = SliderSingleProps | SliderRangeProps; type Callback = ((value: SliderValue) => void) | undefined ; const SIZES: Record<SliderSize , { track: number; stepped: number; thumb: number; bar: number; icon: number; font: number; hit: number }> = { sm: { track: 3 , stepped: 6 , thumb: 20 , bar: 36 , icon: 16 , font: 12 , hit: 44 }, md: { track: 4 , stepped: 8 , thumb: 26 , bar: 46 , icon: 20 , font: 13 , hit: 44 }, lg: { track: 6 , stepped: 10 , thumb: 30 , bar: 58 , icon: 24 , font: 15 , hit: 52 }, }; const BUBBLE_H = 28 ;const BUBBLE_GAP = 10 ;const BUBBLE_W = 120 ;/** Below this many points per step the thumb follows the finger and snaps on release. */ const SNAP_PX = 14 ; const clamp = (n: number, lo: number, hi: number) => Math.min(hi, Math.max(lo, n));const decimals = (n: number) => (String(n).split('.' )[1 ] ?? '' ).length; /** * A slider that feels native: the thumb and fill move on the native driver (no re-render per * frame), the thumb swells under your finger, tap anywhere on the track to seek, and values snap * to `step` with a spring. Variants: a thin iOS track, a Control-Center style `bar` , and a * `stepped` track with ticks; `range` adds a second thumb. Optional value tooltip, min / max * labels, icons and a histogram for filters. */ export function Slider(props: SliderProps) { const { min = 0 , max = 100 , step = 1 , variant = 'default' , size = 'md' , marks, formatValue, showMinMax, minLabel, maxLabel, leftIcon, rightIcon, icon, thickFill, histogram, histogramHeight = 44 , disabled, accent, accessibilityLabel, style, trackStyle, fillStyle, thumbStyle, labelStyle, } = props; const range = props.range === true ; const isBar = variant === 'bar' ; const stepped = variant === 'stepped' ; const showValue = props.showValue ?? (isBar ? 'never' : 'drag' ); const onValueChange = props.onValueChange as Callback; const onSlidingStart = props.onSlidingStart as Callback; const onSlidingComplete = props.onSlidingComplete as Callback; const { colors, radius, dark } = useKit(); const tint = accent ?? colors.accent; const onTint = accent ? readableOn(accent) : colors.accentForeground; const sz = SIZES[size]; const T = isBar ? 0 : sz.thumb; // thumb diameter const inset = T / 2 ; // thumb centre travels [inset, w - inset] const trackH = isBar ? sz.bar : stepped ? sz.stepped : sz.track; const fillH = !isBar && !stepped && thickFill ? trackH + 4 : trackH; const surfaceH = Math.max(sz.hit, isBar ? sz.bar : T); const slotW = Math.max(T, 2 ); const histH = histogram?.length ? histogramHeight + 8 : 0 ; const bubbleBottom = surfaceH / 2 + (isBar ? trackH / 2 : T / 2 ) + BUBBLE_GAP; const bubbleShown = showValue === 'always' && !isBar; // Only an always-visible tooltip needs room above the track; a drag tooltip floats over whatever is there. const reserve = bubbleShown ? Math.max(0 , bubbleBottom + BUBBLE_H - surfaceH - histH) : 0 ; // ---- values --------------------------------------------------------------------------------- const toArr = (v: SliderValue | undefined ): number[] => { if (Array.isArray(v)) return range ? [v[0 ], v[1 ]] : [v[0 ]]; if (typeof v === 'number' ) return range ? [min, v] : [v]; return range ? [min, max] : [min]; }; const controlled = props.value !== undefined ; const [inner, setInner] = useState<number[]>(() => toArr(props.defaultValue)); const vals = (controlled ? toArr(props.value) : inner).map((v) => clamp(v, min, max)); if (range && vals[0 ] > vals[1 ]) vals.reverse(); const span = max - min || 1 ; const ratioOf = (v: number) => clamp((v - min) / span, 0 , 1 ); const snap = (v: number) => { if (!step) return clamp(v, min, max); const n = Math.round((v - min) / step) * step + min; return clamp(Number(n.toFixed(decimals(step))), min, max); }; const fmt = (v: number) => (formatValue ? formatValue(v) : step ? v.toFixed(decimals(step)) : String(Math.round(v))); const out = (arr: number[]): SliderValue => (range ? [arr[0 ], arr[1 ]] : arr[0 ]); const [w, setW] = useState(0 ); const [active, setActive] = useState<number | null >(null ); // ---- animated values ------------------------------------------------------------------------ // All native-driven: they only ever feed transform / opacity. const ratios = useRef([new Animated.Value(ratioOf(vals[0 ])), new Animated.Value(ratioOf(vals[1 ] ?? vals[0 ]))]).current; const press = useRef([new Animated.Value(0 ), new Animated.Value(0 )]).current; const bubble = useRef([new Animated.Value(bubbleShown ? 1 : 0 ), new Animated.Value(bubbleShown ? 1 : 0 )]).current; const held = useRef(new Animated.Value(0 )).current; // Everything the (once-created) PanResponder reads, kept fresh every render. const live = useRef({ vals, w, inset, step, span, min, range, isBar, T, disabled, controlled, snap, ratioOf, fmt, out, onValueChange, onSlidingStart, onSlidingComplete }); live.current = { vals, w, inset, step, span, min, range, isBar, T, disabled, controlled, snap, ratioOf, fmt, out, onValueChange, onSlidingStart, onSlidingComplete }; const drag = useRef({ dragging: false , thumb: 0 , startX: 0 , origin: 0 , relative: false , moved: false , cur: [] as number[], target: [-1 , -1 ] }); // Follow value changes from outside (controlled updates, a11y, icon taps) when nobody is dragging. const key = vals.join(',' ); useEffect(() => { if (drag.current.dragging) return ; vals.forEach((v, i) => Animated.spring(ratios[i], { toValue: ratioOf(v), useNativeDriver: true , ...motion.snappy }).start()); // eslint-disable-next-line react-hooks/exhaustive-deps }, [key, min, max]); useEffect(() => { press.forEach((p, i) => Animated.spring(p, { toValue: active === i ? 1 : 0 , useNativeDriver: true , ...motion.snappy }).start()); bubble.forEach((b, i) => Animated.spring(b, { toValue: bubbleShown || (showValue === 'drag' && active === i) ? 1 : 0 , useNativeDriver: true , ...motion.snappy, }).start() ); Animated.spring(held, { toValue: active !== null ? 1 : 0 , useNativeDriver: true , ...motion.snappy }).start(); }, [active, bubbleShown, showValue, press, bubble, held]); const pan = useMemo(() => { const usableOf = () => Math.max(1 , live.current.w - 2 * live.current.inset); const ratioAt = (x: number) => clamp((x - live.current.inset) / usableOf(), 0 , 1 ); const moveTo = (x: number, animate: boolean) => { const L = live.current; const d = drag.current; const i = d.thumb; let v = L.min + ratioAt(x) * L.span; if (L.range) v = i === 0 ? Math.min(v, d.cur[1 ]) : Math.max(v, d.cur[0 ]); const snapped = L.snap(v); const coarse = !!L.step && (L.step / L.span) * usableOf() >= SNAP_PX; const target = coarse ? L.ratioOf(snapped) : L.ratioOf(v); if (animate || coarse) { if (target !== d.target[i]) Animated.spring(ratios[i], { toValue: target, useNativeDriver: true , ...motion.snappy }).start(); } else { ratios[i].setValue(target); } d.target[i] = target; if (snapped === d.cur[i]) return ; const prev = d.cur[i]; const next = [...d.cur]; next[i] = snapped; d.cur = next; // Uncontrolled continuous sliders only re-render when the shown text changes. if (!L.controlled && (L.step || L.fmt(prev) !== L.fmt(snapped))) setInner(next); L.onValueChange?.(L.out(next)); }; const finish = (seek: boolean) => { const L = live.current; const d = drag.current; if (!d.dragging) return ; if (seek) moveTo(d.startX, true ); Animated.spring(ratios[d.thumb], { toValue: L.ratioOf(d.cur[d.thumb]), useNativeDriver: true , ...motion.snappy }).start(); d.dragging = false ; d.target = [-1 , -1 ]; if (!L.controlled) setInner(d.cur); setActive(null ); L.onSlidingComplete?.(L.out(d.cur)); }; return PanResponder.create({ onStartShouldSetPanResponder: () => !live.current.disabled, onMoveShouldSetPanResponder: () => !live.current.disabled, onPanResponderTerminationRequest: () => false , onShouldBlockNativeResponder: () => true , onPanResponderGrant: (e: GestureResponderEvent) => { const L = live.current; const x = e.nativeEvent.locationX; const cur = [...L.vals]; const xs = cur.map((v) => L.inset + L.ratioOf(v) * usableOf()); let thumb = 0 ; if (L.range) { const d0 = Math.abs(x - xs[0 ]); const d1 = Math.abs(x - xs[1 ]); thumb = d0 === d1 ? (x > xs[1 ] ? 1 : 0 ) : d1 < d0 ? 1 : 0 ; } // Grabbing the thumb (or anywhere on a bar) drags relative to it; elsewhere seeks first. const onThumb = !L.isBar && Math.abs(x - xs[thumb]) <= Math.max(L.T / 2 + 8 , 22 ); const relative = L.isBar || onThumb; drag.current = { dragging: true , thumb, startX: x, origin: relative ? xs[thumb] : x, relative, moved: false , cur, target: [-1 , -1 ] }; setActive(thumb); L.onSlidingStart?.(L.out(cur)); if (!relative) moveTo(x, true ); }, onPanResponderMove: (_, g) => { const d = drag.current; if (Math.abs(g.dx) >= 3 ) d.moved = true ; if (!d.moved && live.current.isBar) return ; // keep a tap on a bar a tap moveTo(d.origin + g.dx, false ); }, // A tap on a bar (no drag) still seeks. onPanResponderRelease: () => finish(drag.current.relative && live.current.isBar && !drag.current.moved), onPanResponderTerminate: () => finish(false ), }); }, [ratios]); const stepBy = (i: number, dir: 1 | -1 , amount?: number) => { if (disabled) return ; const inc = amount ?? (step || span / 100 ); const next = [...vals]; next[i] = snap(next[i] + dir * inc); if (range) next[i] = i === 0 ? Math.min(next[i], vals[1 ]) : Math.max(next[i], vals[0 ]); if (next[i] === vals[i]) return ; if (!controlled) setInner(next); onValueChange?.(out(next)); onSlidingComplete?.(out(next)); }; // Tapping a built-in side icon moves by roughly a tenth of the range, rounded to the step. const iconStep = step ? Math.max(step, Math.round(span / 10 / step) * step) : span / 10 ; // ---- animated styles (memoised so re-renders don't rebuild native nodes) --------------------- const usable = Math.max(1 , w - 2 * inset); const geo = useMemo(() => { if (!w) return null ; const px = ratios.map((r) => r.interpolate({ inputRange: [0 , 1 ], outputRange: [inset, inset + usable], extrapolate: 'clamp' }) ); // Single: a full-width fill slid left so its edge sits at the thumb. Range: a full-width fill // scaled about its centre to span the two thumbs. Both are clipped by a rounded container. const shift = Animated.add(px[0 ], -w); const fill = range ? [ { translateX: Animated.add(Animated.multiply(Animated.add(px[0 ], px[1 ]), 0.5 ), -w / 2 ) }, { scaleX: Animated.multiply(Animated.subtract(px[1 ], px[0 ]), 1 / w) }, ] : [{ translateX: shift }]; return { fill, counter: [{ translateX: Animated.multiply(shift, -1 ) }], // keeps in-bar content still while the fill slides slot: px.map((p) => [{ translateX: Animated.add(p, -slotW / 2 ) }]), }; }, [w, inset, usable, range, slotW, ratios]); const anim = useMemo( () => ({ thumb: press.map((p) => [{ scale: p.interpolate({ inputRange: [0 , 1 ], outputRange: [1 , 1.14 ] }) }]), halo: press.map((p) => [{ scale: p.interpolate({ inputRange: [0 , 1 ], outputRange: [1 , 1.75 ] }) }]), bubble: bubble.map((b) => [ { translateY: b.interpolate({ inputRange: [0 , 1 ], outputRange: [6 , 0 ] }) }, { scale: b.interpolate({ inputRange: [0 , 1 ], outputRange: [0.6 , 1 ] }) }, ]), held: [{ scale: held.interpolate({ inputRange: [0 , 1 ], outputRange: [1 , 1.025 ] }) }], }), [press, bubble, held] ); // ---- marks ---------------------------------------------------------------------------------- const markList: { value: number; label?: string }[] = useMemo(() => { const m = marks ?? (stepped ? true : undefined ); if (!m) return []; if (m === true ) { if (!step || span / step > 40 ) return []; return Array.from ({ length: Math.round(span / step) + 1 }, (_, i) => ({ value: Number((min + i * step).toFixed(decimals(step))) })); } return m.map((x) => (typeof x === 'number' ? { value: x } : x)); }, [marks, stepped, step, span, min]); const hasMarkLabels = markList.some((m) => m.label); const minMax = showMinMax || minLabel !== undefined || maxLabel !== undefined ; const inFill = (v: number) => (range ? v >= vals[0 ] && v <= vals[1 ] : v <= vals[0 ]); const dot = Math.max(2 , Math.round(trackH * (isBar ? 0.12 : 0.4 ))); // ---- colours -------------------------------------------------------------------------------- const trackColor = alpha(colors.mutedForeground, isBar ? (dark ? 0.24 : 0.14 ) : dark ? 0.3 : 0.2 ); const thumbColor = dark ? colors.foreground : colors.card; const drawIcon = (ic: SliderIconProp, color: string) => { if (typeof ic === 'function' ) return ic(color); if (typeof ic === 'string' ) return <SliderIcon name ={ic as SliderIconName} size ={isBar ? sz.icon + 2 : sz.icon} color ={color} />; return ic; }; const sideIcon = (ic: SliderIconProp | undefined , dir: 1 | -1 ) => { if (ic === undefined || ic === null || ic === false ) return null ; const node = drawIcon(ic, colors.mutedForeground); const box = [styles.iconSlot, { height: surfaceH, marginTop: histH }]; if (typeof ic !== 'string' ) return <View style ={box}>{node}</View >; return ( <Pressable accessible ={false } disabled ={disabled} hitSlop ={10 } onPress ={() => stepBy(dir === 1 ? vals.length - 1 : 0 , dir, iconStep)} style ={({ pressed }) => [box, { opacity: pressed ? 0.45 : 1 }]} > {node} </Pressable > ); }; // Content drawn inside a bar: icon at the start, value at the end. Rendered twice — once over // the track and once inside the fill in the "on accent" colour — so it inverts as the fill passes. const barInline = isBar && (icon !== undefined || showValue === 'always' ); const barContent = (iconColor: string, textColor: string) => ( <View style ={[styles.barContent, { width: w, height: trackH, paddingHorizontal: Math.round(trackH * 0.32 ) }]}> <View >{icon !== undefined ? drawIcon(icon, iconColor) : null }</View > {showValue === 'always' ? ( <Text numberOfLines ={1 } selectable ={false } style ={[styles.barValue, { color: textColor, fontSize: sz.font + 1 }, labelStyle]}> {range ? `${fmt(vals[0])} – ${fmt(vals[1])}` : fmt(vals[0 ])} </Text > ) : null } </View > ); const labelText = (key: string, text: string, lit: boolean, place: TextStyle) => ( <Text key ={key} numberOfLines ={1 } selectable ={false } style ={[styles.markLabel, place, { fontSize: sz.font - 1 , color: lit ? colors.foreground : colors.mutedForeground }, labelStyle]} > {text} </Text > ); return ( <View style ={[styles.root, { paddingTop: reserve, opacity: disabled ? 0.45 : 1 }, style]} accessible ={!range} accessibilityRole ={!range ? 'adjustable' : undefined } accessibilityLabel ={accessibilityLabel} accessibilityState ={{ disabled: !!disabled }} accessibilityValue ={!range ? { min, max, now: vals[0 ], text: fmt(vals[0 ]) } : undefined } accessibilityActions ={!range ? [{ name: 'increment' }, { name: 'decrement' }] : undefined } onAccessibilityAction ={(e: AccessibilityActionEvent) => stepBy(0 , e.nativeEvent.actionName === 'increment' ? 1 : -1 )} > <View style ={styles.row}> {sideIcon(leftIcon, -1 )} <View style ={styles.middle}> {histogram?.length ? ( <View pointerEvents ="none" style ={[styles.histogram, { height: histogramHeight, paddingHorizontal: inset }]}> {histogram.map((h, i, all) => { const top = Math.max(...all, 1 ); const mid = min + ((i + 0.5 ) / histogram.length) * span; return ( <View key ={i} style ={[ styles.histBar, { height: Math.max(2 , (h / top) * histogramHeight), borderTopLeftRadius: radius.scale(3 ), borderTopRightRadius: radius.scale(3 ), backgroundColor: inFill(mid) ? alpha(tint, 0.8 ) : alpha(colors.mutedForeground, 0.2 ), }, ]} /> ); })} </View > ) : null } <View {...pan.panHandlers} onLayout ={(e) => setW(e.nativeEvent.layout.width)} style ={[styles.surface, { height: surfaceH }, !disabled && styles.pointer]} > <Animated.View pointerEvents ="none" style ={[styles.layer, isBar && { transform: anim.held }]}> {/* Inactive track */} <View style ={[ styles.track, { top: (surfaceH - trackH) / 2 , height: trackH, borderRadius: radius.capsule(trackH), backgroundColor: trackColor }, trackStyle, ]} > {barInline && w ? barContent(colors.mutedForeground, colors.foreground) : null } </View > {/* Active fill, clipped to the track shape */} {geo ? ( <View style ={[styles.clip, { top: (surfaceH - fillH) / 2 , width: w, height: fillH, borderRadius: radius.capsule(fillH) }]}> <Animated.View style ={[styles.fill, { width: w, backgroundColor: tint, transform: geo.fill }, fillStyle]}> {barInline && !range ? ( <Animated.View style ={[styles.counter, { transform: geo.counter }]}>{barContent(onTint, onTint)}</Animated.View > ) : null } </Animated.View > </View > ) : null } {/* Step ticks */} {w ? markList.map((m) => ( <View key ={m.value} style ={[ styles.tick, { width: dot, height: dot, borderRadius: dot, left: inset + ratioOf(m.value) * usable - dot / 2 , top: (surfaceH - dot) / 2 , backgroundColor: inFill(m.value) ? alpha(onTint, 0.7 ) : alpha(colors.mutedForeground, dark ? 0.6 : 0.45 ), }, ]} /> )) : null } {/* Thumbs (and the value tooltip, which rides along with them) */} {geo ? vals.map((v, i) => ( <Animated.View key ={i} accessible ={range} accessibilityRole ={range ? 'adjustable' : undefined } accessibilityLabel ={range ? `${accessibilityLabel ?? 'Range'} ${i === 0 ? 'minimum' : 'maximum'}` : undefined } accessibilityValue ={range ? { min, max, now: v, text: fmt(v) } : undefined } accessibilityActions ={range ? [{ name: 'increment' }, { name: 'decrement' }] : undefined } onAccessibilityAction ={(e: AccessibilityActionEvent) => stepBy(i, e.nativeEvent.actionName === 'increment' ? 1 : -1 )} style ={[styles.slot, { width: slotW, height: surfaceH, zIndex: active === i ? 2 : 1 , transform: geo.slot[i] }]} > {!isBar ? ( <> <Animated.View style ={[ styles.halo, { top: (surfaceH - T) / 2 , width: T, height: T, borderRadius: radius.capsule(T), backgroundColor: alpha(tint, 0.16 ), opacity: press[i], transform: anim.halo[i], }, ]} /> <Animated.View style ={[ styles.thumb, { width: T, height: T, borderRadius: radius.capsule(T), backgroundColor: thumbColor, borderColor: dark ? 'transparent' : colors.border, shadowOpacity: dark ? 0.5 : 0.2 , transform: anim.thumb[i], }, thumbStyle, ]} /> </> ) : null } {showValue !== 'never' && !(isBar && showValue === 'always' ) ? ( <Animated.View style ={[ styles.bubbleWrap, { bottom: bubbleBottom, left: slotW / 2 - BUBBLE_W / 2 , opacity: bubble[i], transform: anim.bubble[i] }, ]} > <View style ={[styles.bubble, { backgroundColor: colors.foreground, borderRadius: radius.capsule(BUBBLE_H) }]}> <Text numberOfLines ={1 } selectable ={false } style ={[styles.bubbleText, { color: colors.background, fontSize: sz.font }, labelStyle]}> {fmt(v)} </Text > </View > </Animated.View > ) : null } </Animated.View > )) : null } </Animated.View > </View > {hasMarkLabels || minMax ? ( <View pointerEvents ="none" style ={[styles.labels, { height: sz.font + 8 }]}> {hasMarkLabels ? markList.map((m) => { if (!m.label || !w) return null ; const r = ratioOf(m.value); const place: TextStyle = r <= 0 ? { left: 0 , textAlign: 'left' } : r >= 1 ? { right: 0 , textAlign: 'right' } : { left: inset + r * usable - 40 }; return labelText(String(m.value), m.label, inFill(m.value), place); }) : [ labelText('min' , minLabel ?? fmt(min), false , { left: 0 , textAlign: 'left' }), labelText('max' , maxLabel ?? fmt(max), false , { right: 0 , textAlign: 'right' }), ]} </View > ) : null } </View > {sideIcon(rightIcon, 1 )} </View > </View > ); } /** Small stroke icons for `leftIcon` / `rightIcon` / `icon` . */ export function SliderIcon({ name, size = 20 , color }: { name: SliderIconName; size?: number; color: string }) { const p = { stroke: color, strokeWidth: 1.8 , strokeLinecap: 'round' as const , strokeLinejoin: 'round' as const , fill: 'none' }; const speaker = <Path d ="M11 5 6.5 9H3.5v6h3l4.5 4V5z" {...p} />; const rays = (r1: number, r2: number) => Array.from ({ length: 8 }, (_, i) => { const a = (i * Math.PI) / 4 ; const c = Math.cos(a); const sn = Math.sin(a); return `M${(12 + c * r1).toFixed(2)} ${(12 + sn * r1).toFixed(2)}L${(12 + c * r2).toFixed(2)} ${(12 + sn * r2).toFixed(2)}` ; }).join('' ); let body: React.ReactNode; switch (name) { case 'volume-off' : body = ( <> {speaker} <Path d ="m16 9.5 5 5M21 9.5l-5 5" {...p} /> </> ); break; case 'volume-low' : body = ( <> {speaker} <Path d ="M15.5 9a4.2 4.2 0 0 1 0 6" {...p} /> </> ); break; case 'volume-high' : body = ( <> {speaker} <Path d ="M15.5 9a4.2 4.2 0 0 1 0 6M18.5 6a8.5 8.5 0 0 1 0 12" {...p} /> </> ); break; case 'sun-low' : body = ( <> <Circle cx ={12 } cy ={12 } r ={3 } {...p} /> <Path d ={rays(5.6 , 6.8 )} {...p} /> </> ); break; case 'sun-high' : body = ( <> <Circle cx ={12 } cy ={12 } r ={4 } {...p} /> <Path d ={rays(6.8 , 9.4 )} {...p} /> </> ); break; case 'minus' : body = <Path d ="M6 12h12" {...p} />; break; case 'plus' : body = <Path d ="M12 6v12M6 12h12" {...p} />; break; } return ( <Svg width ={size} height ={size} viewBox ="0 0 24 24" > {body} </Svg > ); } const styles = StyleSheet.create({ root: { alignSelf: 'stretch' }, row: { flexDirection: 'row' , alignItems: 'flex-start' , gap: 12 }, middle: { flex: 1 }, iconSlot: { minWidth: 24 , alignItems: 'center' , justifyContent: 'center' }, histogram: { flexDirection: 'row' , alignItems: 'flex-end' , gap: 2 , marginBottom: 8 }, histBar: { flex: 1 }, surface: { justifyContent: 'center' }, pointer: { cursor: 'pointer' }, layer: { ...StyleSheet.absoluteFill }, track: { position: 'absolute' , left: 0 , right: 0 , overflow: 'hidden' }, clip: { position: 'absolute' , left: 0 , overflow: 'hidden' }, fill: { position: 'absolute' , left: 0 , top: 0 , bottom: 0 , overflow: 'hidden' }, counter: { position: 'absolute' , left: 0 , top: 0 , bottom: 0 }, barContent: { flexDirection: 'row' , alignItems: 'center' , justifyContent: 'space-between' }, barValue: { fontWeight: '400' , fontVariant: ['tabular-nums' ] }, tick: { position: 'absolute' }, slot: { position: 'absolute' , left: 0 , top: 0 , alignItems: 'center' , justifyContent: 'center' }, halo: { position: 'absolute' , left: 0 }, thumb: { borderWidth: StyleSheet.hairlineWidth, shadowColor: '#000' , shadowRadius: 4 , shadowOffset: { width: 0 , height: 2 }, elevation: 3 , }, bubbleWrap: { position: 'absolute' , width: BUBBLE_W, alignItems: 'center' , transformOrigin: 'bottom' }, bubble: { height: BUBBLE_H, paddingHorizontal: 10 , minWidth: 36 , alignItems: 'center' , justifyContent: 'center' , shadowColor: '#000' , shadowOpacity: 0.18 , shadowRadius: 8 , shadowOffset: { width: 0 , height: 3 }, elevation: 4 , }, bubbleText: { fontWeight: '400' , fontVariant: ['tabular-nums' ] }, labels: { marginTop: 2 }, markLabel: { position: 'absolute' , width: 80 , textAlign: 'center' , fontWeight: '400' , fontVariant: ['tabular-nums' ] }, }); 
