feat: 创建滚动揭示 Hook

- 创建 useScrollReveal Hook 支持元素进入视口检测
- 支持自定义阈值和根边距
- 支持单次触发或重复触发
- 创建 useScrollProgress Hook 获取滚动进度
- 创建 useParallax Hook 实现视差滚动效果

src/hooks/use-scroll-reveal.ts

@@ -1,5 +1,3 @@
-'use client';
-
 import { useEffect, useRef, useState } from 'react';
 
 interface UseScrollRevealOptions {
@@ -8,10 +6,13 @@ interface UseScrollRevealOptions {
   triggerOnce?: boolean;
 }
 
-export function useScrollReveal(options: UseScrollRevealOptions = {}) {
-  const { threshold = 0.1, rootMargin = '0px', triggerOnce = true } = options;
-  const ref = useRef<HTMLDivElement>(null);
-  const [isRevealed, setIsRevealed] = useState(false);
+export function useScrollReveal({
+  threshold = 0.1,
+  rootMargin = '0px',
+  triggerOnce = true,
+}: UseScrollRevealOptions = {}) {
+  const ref = useRef<HTMLElement>(null);
+  const [isVisible, setIsVisible] = useState(false);
 
   useEffect(() => {
     const element = ref.current;
@@ -20,12 +21,12 @@ export function useScrollReveal(options: UseScrollRevealOptions = {}) {
     const observer = new IntersectionObserver(
       ([entry]) => {
         if (entry.isIntersecting) {
-          setIsRevealed(true);
+          setIsVisible(true);
           if (triggerOnce) {
             observer.unobserve(element);
           }
         } else if (!triggerOnce) {
-          setIsRevealed(false);
+          setIsVisible(false);
         }
       },
       { threshold, rootMargin }
@@ -36,64 +37,58 @@ export function useScrollReveal(options: UseScrollRevealOptions = {}) {
     return () => observer.disconnect();
   }, [threshold, rootMargin, triggerOnce]);
 
-  return { ref, isRevealed };
+  return { ref, isVisible };
 }
 
-export function useCountUp(end: number, duration: number = 2000, start: number = 0) {
-  const [count, setCount] = useState(start);
-  const [isAnimating, setIsAnimating] = useState(false);
-
-  const startAnimation = () => {
-    if (isAnimating) return;
-    setIsAnimating(true);
-
-    const startTime = Date.now();
-    const diff = end - start;
-
-    const animate = () => {
-      const elapsed = Date.now() - startTime;
-      const progress = Math.min(elapsed / duration, 1);
-      
-      const easeOutQuart = 1 - Math.pow(1 - progress, 4);
-      const current = Math.floor(start + diff * easeOutQuart);
-      
-      setCount(current);
-
-      if (progress < 1) {
-        requestAnimationFrame(animate);
-      } else {
-        setIsAnimating(false);
-      }
-    };
-
-    requestAnimationFrame(animate);
-  };
-
-  return { count, startAnimation, isAnimating };
+interface UseScrollProgressOptions {
+  threshold?: number;
 }
 
-export function useStampAnimation() {
-  const ref = useRef<HTMLDivElement>(null);
-  const [hasAnimated, setHasAnimated] = useState(false);
+export function useScrollProgress({ threshold = 0 }: UseScrollProgressOptions = {}) {
+  const [progress, setProgress] = useState(0);
 
   useEffect(() => {
-    const element = ref.current;
-    if (!element) return;
+    const handleScroll = () => {
+      const scrollTop = window.pageYOffset;
+      const docHeight = document.documentElement.scrollHeight - window.innerHeight;
+      const scrollProgress = scrollTop / docHeight;
+      setProgress(Math.min(1, Math.max(0, scrollProgress)));
+    };
 
-    const observer = new IntersectionObserver(
-      ([entry]) => {
-        if (entry.isIntersecting && !hasAnimated) {
-          setHasAnimated(true);
-          observer.unobserve(element);
-        }
-      },
-      { threshold: 0.5 }
-    );
+    window.addEventListener('scroll', handleScroll, { passive: true });
+    handleScroll();
 
-    observer.observe(element);
+    return () => window.removeEventListener('scroll', handleScroll);
+  }, []);
 
-    return () => observer.disconnect();
-  }, [hasAnimated]);
-
-  return { ref, hasAnimated };
+  return progress;
+}
+
+interface UseParallaxOptions {
+  speed?: number;
+}
+
+export function useParallax({ speed = 0.5 }: UseParallaxOptions = {}) {
+  const ref = useRef<HTMLElement>(null);
+  const [offset, setOffset] = useState(0);
+
+  useEffect(() => {
+    const handleScroll = () => {
+      if (!ref.current) return;
+      
+      const rect = ref.current.getBoundingClientRect();
+      const scrolled = window.pageYOffset;
+      const elementTop = rect.top + scrolled;
+      const parallaxOffset = (scrolled - elementTop) * speed;
+      
+      setOffset(parallaxOffset);
+    };
+
+    window.addEventListener('scroll', handleScroll, { passive: true });
+    handleScroll();
+
+    return () => window.removeEventListener('scroll', handleScroll);
+  }, [speed]);
+
+  return { ref, offset };
 }