'use client'; import { motion, MotionValue, useMotionValue, useSpring, useTransform, type SpringOptions, AnimatePresence, } from 'motion/react'; import { Children, cloneElement, createContext, useContext, useEffect, useMemo, useRef, useState, } from 'react'; import { cn } from '@/lib/utils'; const DOCK_HEIGHT = 128; const DEFAULT_MAGNIFICATION = 80; const DEFAULT_DISTANCE = 150; const DEFAULT_PANEL_HEIGHT = 64; export type DockProps = { children: React.ReactNode; className?: string; distance?: number; panelHeight?: number; magnification?: number; spring?: SpringOptions; }; export type DockItemProps = { className?: string; children: React.ReactNode; }; export type DockLabelProps = { className?: string; children: React.ReactNode; }; export type DockIconProps = { className?: string; children: React.ReactNode; }; export type DocContextType = { mouseX: MotionValue; spring: SpringOptions; magnification: number; distance: number; }; export type DockProviderProps = { children: React.ReactNode; value: DocContextType; }; const DockContext = createContext(undefined); function DockProvider({ children, value }: DockProviderProps) { return {children}; } function useDock() { const context = useContext(DockContext); if (!context) { throw new Error('useDock must be used within an DockProvider'); } return context; } function Dock({ children, className, spring = { mass: 0.1, stiffness: 150, damping: 12 }, magnification = DEFAULT_MAGNIFICATION, distance = DEFAULT_DISTANCE, panelHeight = DEFAULT_PANEL_HEIGHT, }: DockProps) { const mouseX = useMotionValue(Infinity); const isHovered = useMotionValue(0); const maxHeight = useMemo(() => { return Math.max(DOCK_HEIGHT, magnification + magnification / 2 + 4); }, [magnification]); const heightRow = useTransform(isHovered, [0, 1], [panelHeight, maxHeight]); const height = useSpring(heightRow, spring); return ( { isHovered.set(1); mouseX.set(pageX); }} onMouseLeave={() => { isHovered.set(0); mouseX.set(Infinity); }} className={cn( 'mx-auto flex w-fit gap-4 rounded-2xl bg-gray-50 px-4 dark:bg-neutral-900', className )} style={{ height: panelHeight }} role='toolbar' aria-label='Application dock' > {children} ); } function DockItem({ children, className }: DockItemProps) { const ref = useRef(null); const { distance, magnification, mouseX, spring } = useDock(); const isHovered = useMotionValue(0); const mouseDistance = useTransform(mouseX, (val) => { const domRect = ref.current?.getBoundingClientRect() ?? { x: 0, width: 0 }; return val - domRect.x - domRect.width / 2; }); const widthTransform = useTransform( mouseDistance, [-distance, 0, distance], [40, magnification, 40] ); const width = useSpring(widthTransform, spring); return ( isHovered.set(1)} onHoverEnd={() => isHovered.set(0)} onFocus={() => isHovered.set(1)} onBlur={() => isHovered.set(0)} className={cn( 'relative inline-flex items-center justify-center', className )} tabIndex={0} role='button' aria-haspopup='true' > {Children.map(children, (child) => cloneElement(child as React.ReactElement, { width, isHovered }) )} ); } function DockLabel({ children, className, ...rest }: DockLabelProps) { const restProps = rest as Record; const isHovered = restProps['isHovered'] as MotionValue; const [isVisible, setIsVisible] = useState(false); useEffect(() => { const unsubscribe = isHovered.on('change', (latest) => { setIsVisible(latest === 1); }); return () => unsubscribe(); }, [isHovered]); return ( {isVisible && ( )} ); } function DockIcon({ children, className, ...rest }: DockIconProps) { const restProps = rest as Record; const width = restProps['width'] as MotionValue; const widthTransform = useTransform(width, (val) => val / 2); return ( {children} ); } export { Dock, DockIcon, DockItem, DockLabel };