first commit

Co-Authored-By: Codex <noreply@openai.com>
2026-07-30 04:44:28 +08:00 · 2026-05-19 07:53:53 +08:00
commit 472bf8b732
133 changed files with 16869 additions and 0 deletions
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+"use client"
+
+import { useCallback, useEffect, useRef, useState } from "react"
+import { Moon, Sun } from "lucide-react"
+import { flushSync } from "react-dom"
+
+import { cn } from "@/lib/utils"
+
+export type TransitionVariant =
+  | "circle"
+  | "square"
+  | "triangle"
+  | "diamond"
+  | "hexagon"
+  | "rectangle"
+  | "star"
+
+interface AnimatedThemeTogglerProps extends React.ComponentPropsWithoutRef<"button"> {
+  duration?: number
+  variant?: TransitionVariant
+  /** When true, the transition expands from the viewport center instead of the button center. */
+  fromCenter?: boolean
+  theme?: "light" | "dark"
+  targetTheme?: "light" | "dark"
+  onThemeChange?: (theme: "light" | "dark") => void
+}
+
+function polygonCollapsed(cx: number, cy: number, vertexCount: number): string {
+  const pairs = Array.from(
+    { length: vertexCount },
+    () => `${cx}px ${cy}px`
+  ).join(", ")
+  return `polygon(${pairs})`
+}
+
+function getThemeTransitionClipPaths(
+  variant: TransitionVariant,
+  cx: number,
+  cy: number,
+  maxRadius: number,
+  viewportWidth: number,
+  viewportHeight: number
+): [string, string] {
+  switch (variant) {
+    case "circle":
+      return [
+        `circle(0px at ${cx}px ${cy}px)`,
+        `circle(${maxRadius}px at ${cx}px ${cy}px)`,
+      ]
+    case "square": {
+      const halfW = Math.max(cx, viewportWidth - cx)
+      const halfH = Math.max(cy, viewportHeight - cy)
+      const halfSide = Math.max(halfW, halfH) * 1.05
+      const end = [
+        `${cx - halfSide}px ${cy - halfSide}px`,
+        `${cx + halfSide}px ${cy - halfSide}px`,
+        `${cx + halfSide}px ${cy + halfSide}px`,
+        `${cx - halfSide}px ${cy + halfSide}px`,
+      ].join(", ")
+      return [polygonCollapsed(cx, cy, 4), `polygon(${end})`]
+    }
+    case "triangle": {
+      const scale = maxRadius * 2.2
+      const dx = (Math.sqrt(3) / 2) * scale
+      const verts = [
+        `${cx}px ${cy - scale}px`,
+        `${cx + dx}px ${cy + 0.5 * scale}px`,
+        `${cx - dx}px ${cy + 0.5 * scale}px`,
+      ].join(", ")
+      return [polygonCollapsed(cx, cy, 3), `polygon(${verts})`]
+    }
+    case "diamond": {
+      // Slightly larger than the view-transition circle radius so axis-aligned coverage matches the circle reveal.
+      const R = maxRadius * Math.SQRT2
+      const end = [
+        `${cx}px ${cy - R}px`,
+        `${cx + R}px ${cy}px`,
+        `${cx}px ${cy + R}px`,
+        `${cx - R}px ${cy}px`,
+      ].join(", ")
+      return [polygonCollapsed(cx, cy, 4), `polygon(${end})`]
+    }
+    case "hexagon": {
+      const R = maxRadius * Math.SQRT2
+      const verts: string[] = []
+      for (let i = 0; i < 6; i++) {
+        const a = -Math.PI / 2 + (i * Math.PI) / 3
+        verts.push(`${cx + R * Math.cos(a)}px ${cy + R * Math.sin(a)}px`)
+      }
+      return [polygonCollapsed(cx, cy, 6), `polygon(${verts.join(", ")})`]
+    }
+    case "rectangle": {
+      const halfW = Math.max(cx, viewportWidth - cx)
+      const halfH = Math.max(cy, viewportHeight - cy)
+      const end = [
+        `${cx - halfW}px ${cy - halfH}px`,
+        `${cx + halfW}px ${cy - halfH}px`,
+        `${cx + halfW}px ${cy + halfH}px`,
+        `${cx - halfW}px ${cy + halfH}px`,
+      ].join(", ")
+      return [polygonCollapsed(cx, cy, 4), `polygon(${end})`]
+    }
+    case "star": {
+      // Small overscan so the last frames never leave a 1px seam before the transition group ends.
+      const R = maxRadius * Math.SQRT2 * 1.03
+      const innerRatio = 0.42
+      const starPolygon = (radius: number) => {
+        const verts: string[] = []
+        for (let i = 0; i < 5; i++) {
+          const outerA = -Math.PI / 2 + (i * 2 * Math.PI) / 5
+          verts.push(
+            `${cx + radius * Math.cos(outerA)}px ${cy + radius * Math.sin(outerA)}px`
+          )
+          const innerA = outerA + Math.PI / 5
+          verts.push(
+            `${cx + radius * innerRatio * Math.cos(innerA)}px ${cy + radius * innerRatio * Math.sin(innerA)}px`
+          )
+        }
+        return `polygon(${verts.join(", ")})`
+      }
+      const startR = Math.max(2, R * 0.025)
+      return [starPolygon(startR), starPolygon(R)]
+    }
+    default:
+      return [
+        `circle(0px at ${cx}px ${cy}px)`,
+        `circle(${maxRadius}px at ${cx}px ${cy}px)`,
+      ]
+  }
+}
+
+export const AnimatedThemeToggler = ({
+  children,
+  className,
+  duration = 400,
+  variant,
+  fromCenter = false,
+  theme,
+  targetTheme,
+  onThemeChange,
+  ...props
+}: AnimatedThemeTogglerProps) => {
+  const shape = variant ?? "circle"
+  const [isDark, setIsDark] = useState(false)
+  const buttonRef = useRef<HTMLButtonElement>(null)
+
+  useEffect(() => {
+    if (theme) {
+      setIsDark(theme === "dark")
+      return
+    }
+
+    const updateTheme = () => {
+      setIsDark(document.documentElement.classList.contains("dark"))
+    }
+
+    updateTheme()
+
+    const observer = new MutationObserver(updateTheme)
+    observer.observe(document.documentElement, {
+      attributes: true,
+      attributeFilter: ["class"],
+    })
+
+    return () => observer.disconnect()
+  }, [theme])
+
+  const toggleTheme = useCallback(() => {
+    const button = buttonRef.current
+    if (!button) return
+
+    const viewportWidth = window.visualViewport?.width ?? window.innerWidth
+    const viewportHeight = window.visualViewport?.height ?? window.innerHeight
+
+    let x: number
+    let y: number
+    if (fromCenter) {
+      x = viewportWidth / 2
+      y = viewportHeight / 2
+    } else {
+      const { top, left, width, height } = button.getBoundingClientRect()
+      x = left + width / 2
+      y = top + height / 2
+    }
+
+    const maxRadius = Math.hypot(
+      Math.max(x, viewportWidth - x),
+      Math.max(y, viewportHeight - y)
+    )
+
+    const applyTheme = () => {
+      const nextTheme = targetTheme ?? (isDark ? "light" : "dark")
+      if (nextTheme === (isDark ? "dark" : "light")) return
+      setIsDark(nextTheme === "dark")
+      document.documentElement.classList.toggle("dark", nextTheme === "dark")
+      document.documentElement.style.colorScheme = nextTheme
+      onThemeChange?.(nextTheme)
+    }
+
+    if (typeof document.startViewTransition !== "function") {
+      applyTheme()
+      return
+    }
+
+    const clipPath = getThemeTransitionClipPaths(
+      shape,
+      x,
+      y,
+      maxRadius,
+      viewportWidth,
+      viewportHeight
+    )
+
+    const root = document.documentElement
+    root.dataset.magicuiThemeVt = "active"
+    root.style.setProperty(
+      "--magicui-theme-toggle-vt-duration",
+      `${duration}ms`
+    )
+    // Pin the collapsed clip-path via CSS so Firefox does not paint the new
+    // theme unclipped between snapshot and the ready.then() JS animation.
+    root.style.setProperty("--magicui-theme-vt-clip-from", clipPath[0])
+    const cleanup = () => {
+      delete root.dataset.magicuiThemeVt
+      root.style.removeProperty("--magicui-theme-toggle-vt-duration")
+      root.style.removeProperty("--magicui-theme-vt-clip-from")
+    }
+
+    const transition = document.startViewTransition(() => {
+      flushSync(applyTheme)
+    })
+    if (typeof transition?.finished?.finally === "function") {
+      transition.finished.finally(cleanup)
+    } else {
+      cleanup()
+    }
+
+    const ready = transition?.ready
+    if (ready && typeof ready.then === "function") {
+      ready.then(() => {
+        document.documentElement.animate(
+          {
+            clipPath,
+          },
+          {
+            duration,
+            // Star: linear avoids easing overshoot that fights polygon interpolation at t→1; VT group duration is synced above.
+            easing: shape === "star" ? "linear" : "ease-in-out",
+            fill: "forwards",
+            pseudoElement: "::view-transition-new(root)",
+          }
+        )
+      })
+    }
+  }, [shape, fromCenter, duration, isDark, targetTheme, onThemeChange])
+
+  return (
+    <button
+      type="button"
+      ref={buttonRef}
+      onClick={toggleTheme}
+      className={cn(className)}
+      {...props}
+    >
+      {children ?? (isDark ? <Sun /> : <Moon />)}
+      <span className="sr-only">{props["aria-label"] || "切换主题"}</span>
+    </button>
+  )
+}
@@ -0,0 +1,263 @@
+"use client"
+
+import { useEffect, useRef, useState } from "react"
+import {
+  animate,
+  motion,
+  useInView,
+  useMotionValue,
+  useReducedMotion,
+  useTransform,
+  type HTMLMotionProps,
+} from "motion/react"
+
+import { cn } from "@/lib/utils"
+
+const DEFAULT_COLORS = ["#c679c4", "#fa3d1d", "#ffb005", "#e1e1fe", "#0358f7"]
+const BAND_HALF = 17
+const SWEEP_START = -BAND_HALF
+const SWEEP_END = 100 + BAND_HALF
+
+const sweepEase = (t: number) =>
+  t < 0.5 ? 4 * t ** 3 : 1 - (-2 * t + 2) ** 3 / 2
+
+function buildGradient(pos: number, colors: string[], textColor: string) {
+  const bandStart = pos - BAND_HALF
+  const bandEnd = pos + BAND_HALF
+
+  if (bandStart >= 100) {
+    return `linear-gradient(90deg, ${textColor}, ${textColor})`
+  }
+  const n = colors.length
+  const parts: string[] = []
+
+  if (bandStart > 0)
+    parts.push(`${textColor} 0%`, `${textColor} ${bandStart.toFixed(2)}%`)
+
+  colors.forEach((c, i) => {
+    const pct = n === 1 ? pos : bandStart + (i / (n - 1)) * BAND_HALF * 2
+    parts.push(`${c} ${pct.toFixed(2)}%`)
+  })
+
+  if (bandEnd < 100)
+    parts.push(`transparent ${bandEnd.toFixed(2)}%`, `transparent 100%`)
+
+  return `linear-gradient(90deg, ${parts.join(", ")})`
+}
+
+function measureWidths(el: HTMLElement, texts: string[]) {
+  const ghost = el.cloneNode() as HTMLElement
+  Object.assign(ghost.style, {
+    position: "absolute",
+    visibility: "hidden",
+    pointerEvents: "none",
+    width: "auto",
+    whiteSpace: "nowrap",
+  })
+  el.parentElement!.appendChild(ghost)
+  const widths = texts.map((t) => {
+    ghost.textContent = t
+    return ghost.getBoundingClientRect().width
+  })
+  ghost.remove()
+  return widths
+}
+
+/**
+ * Props for {@link DiaTextReveal}.
+ */
+export interface DiaTextRevealProps extends Omit<
+  HTMLMotionProps<"span">,
+  "ref" | "children" | "style" | "animate" | "transition" | "color"
+> {
+  /**
+   * Text to reveal. Pass multiple strings to rotate when {@link DiaTextRevealProps.repeat} is `true`.
+   */
+  text: string | string[]
+  /**
+   * Colors sampled across the moving gradient band. Defaults to a built-in palette.
+   */
+  colors?: string[]
+  /**
+   * CSS color for revealed text after the sweep and for leading/trailing regions during the animation.
+   * @defaultValue `"var(--foreground)"`
+   */
+  textColor?: string
+  /**
+   * Duration of one sweep pass, in seconds.
+   * @defaultValue `1.5`
+   */
+  duration?: number
+  /**
+   * Delay before the sweep starts, in seconds.
+   * @defaultValue `0`
+   */
+  delay?: number
+  /**
+   * When `text` is an array, replay the sweep and advance to the next string after each completion.
+   * @defaultValue `false`
+   */
+  repeat?: boolean
+  /**
+   * Pause between cycles when {@link DiaTextRevealProps.repeat} is `true`, in seconds.
+   * @defaultValue `0.5`
+   */
+  repeatDelay?: number
+  /**
+   * If `true`, the animation starts only after the element enters the viewport.
+   * @defaultValue `true`
+   */
+  startOnView?: boolean
+  /**
+   * Passed to `useInView`: if `true`, in-view detection fires at most once (no replay on scroll-back).
+   * @defaultValue `true`
+   */
+  once?: boolean
+  /**
+   * Additional class names for the animated `span` (e.g. typography utilities).
+   */
+  className?: string
+  /**
+   * When `text` has multiple entries, use the widest string’s width for layout instead of animating width per line.
+   * @defaultValue `false`
+   */
+  fixedWidth?: boolean
+}
+
+export function DiaTextReveal({
+  text,
+  colors = DEFAULT_COLORS,
+  textColor = "var(--foreground)",
+  duration = 1.5,
+  delay = 0,
+  repeat = false,
+  repeatDelay = 0.5,
+  startOnView = true,
+  once = true,
+  className,
+  fixedWidth = false,
+  ...props
+}: DiaTextRevealProps) {
+  const texts = Array.isArray(text) ? text : [text]
+  const isMulti = texts.length > 1
+  const prefersReducedMotion = useReducedMotion()
+
+  const spanRef = useRef<HTMLSpanElement>(null)
+  const optsRef = useRef({
+    colors,
+    textColor,
+    duration,
+    delay,
+    repeat,
+    repeatDelay,
+    texts,
+  })
+  optsRef.current = {
+    colors,
+    textColor,
+    duration,
+    delay,
+    repeat,
+    repeatDelay,
+    texts,
+  }
+
+  const indexRef = useRef(0)
+  const hasPlayedRef = useRef(false)
+  const timerRef = useRef<ReturnType<typeof setTimeout>>(undefined)
+  const playRef = useRef<() => void>(null!)
+  const stopRef = useRef<(() => void) | null>(null)
+
+  const [activeIndex, setActiveIndex] = useState(0)
+  const [measuredWidths, setMeasuredWidths] = useState<number[]>([])
+
+  const sweepPos = useMotionValue(SWEEP_START)
+
+  const backgroundImage = useTransform(sweepPos, (pos) =>
+    buildGradient(pos, optsRef.current.colors, optsRef.current.textColor)
+  )
+
+  const isInView = useInView(spanRef, { once, amount: 0.1 })
+
+  useEffect(() => {
+    const el = spanRef.current
+    if (!el || !isMulti) return
+    setMeasuredWidths(measureWidths(el, texts))
+  }, [Array.isArray(text) ? text.join("\0") : text])
+
+  playRef.current = () => {
+    const { duration, delay, repeat, repeatDelay, texts } = optsRef.current
+
+    sweepPos.set(SWEEP_START)
+
+    const controls = animate(sweepPos, SWEEP_END, {
+      duration,
+      delay,
+      ease: sweepEase,
+      onComplete() {
+        if (!repeat) return
+        timerRef.current = setTimeout(() => {
+          const next = (indexRef.current + 1) % texts.length
+          indexRef.current = next
+          setActiveIndex(next)
+          playRef.current()
+        }, repeatDelay * 1000)
+      },
+    })
+
+    stopRef.current = () => controls.stop()
+  }
+
+  useEffect(() => {
+    if (prefersReducedMotion) {
+      sweepPos.set(SWEEP_END)
+      return
+    }
+    if (startOnView && !isInView) return
+    if (once && hasPlayedRef.current) return
+    hasPlayedRef.current = true
+    playRef.current()
+
+    return () => {
+      stopRef.current?.()
+      clearTimeout(timerRef.current)
+    }
+  }, [isInView, startOnView, once, prefersReducedMotion, sweepPos])
+
+  const fixedW =
+    isMulti && fixedWidth && measuredWidths.length > 0
+      ? Math.max(...measuredWidths)
+      : undefined
+
+  const animatedW =
+    isMulti && !fixedWidth && measuredWidths[activeIndex] != null
+      ? measuredWidths[activeIndex]
+      : undefined
+
+  return (
+    <motion.span
+      ref={spanRef}
+      className={cn("align-bottom leading-[100%] text-inherit", className)}
+      style={{
+        transform: "translateY(-2px)",
+        color: "transparent",
+        backgroundClip: "text",
+        WebkitBackgroundClip: "text",
+        backgroundSize: "100% 100%",
+        backgroundImage,
+        ...(isMulti && {
+          display: "inline-block",
+          overflow: "hidden",
+          whiteSpace: "nowrap",
+          verticalAlign: "text-center",
+          ...(fixedW != null && { width: fixedW }),
+        }),
+      }}
+      animate={animatedW != null ? { width: animatedW } : undefined}
+      transition={{ duration: 0.4, ease: [0.4, 0, 0.2, 1] }}
+      {...props}
+    >
+      {texts[activeIndex]}
+    </motion.span>
+  )
+}