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@yoonhaemin-lib/view-tracker

v0.0.6

Published

Track visible sections on scroll with React Intersection Observer for navigation highlighting and progress indicators

Readme

@yoonhaemin-lib/view-tracker

스크롤에 따라 화면에 보이는 섹션을 추적하는 React 컴포넌트

Features

  • 자동 섹션 추적 - 스크롤 시 화면에 보이는 섹션 자동 감지
  • 커스터마이징 - 상단/하단 인터섹션 옵션 설정 가능

Installation

npm install @yoonhaemin-lib/view-tracker
yarn add @yoonhaemin-lib/view-tracker
pnpm add @yoonhaemin-lib/view-tracker

Quick Start

import { ViewTrackerProvider, ViewTracker, useViewTracker } from '@yoonhaemin-lib/view-tracker';

function App() {
  return (
    <ViewTrackerProvider>
      <Navigation />
      <Content />
    </ViewTrackerProvider>
  );
}

function Navigation() {
  const { viewSection } = useViewTracker();
  return <nav>현재 섹션: {viewSection}</nav>;
}

function Content() {
  return (
    <>
      <ViewTracker id="intro">
        <section>인트로 섹션</section>
      </ViewTracker>
      <ViewTracker id="features">
        <section>기능 섹션</section>
      </ViewTracker>
      <ViewTracker id="contact">
        <section>연락처 섹션</section>
      </ViewTracker>
    </>
  );
}

Usage

기본 사용법

ViewTrackerProvider로 앱을 감싸고, ViewTracker로 추적할 섹션을 감싸면 됩니다.

import { ViewTrackerProvider, ViewTracker } from '@yoonhaemin-lib/view-tracker';

function App() {
  return (
    <ViewTrackerProvider>
      <ViewTracker id="section-1">
        <div style={{ height: '100vh' }}>첫 번째 섹션</div>
      </ViewTracker>
      <ViewTracker id="section-2">
        <div style={{ height: '100vh' }}>두 번째 섹션</div>
      </ViewTracker>
      <ViewTracker id="section-3">
        <div style={{ height: '100vh' }}>세 번째 섹션</div>
      </ViewTracker>
    </ViewTrackerProvider>
  );
}

현재 섹션 읽기

useViewTracker 훅을 사용하여 현재 화면에 보이는 섹션 ID를 가져올 수 있습니다.

import { useViewTracker } from '@yoonhaemin-lib/view-tracker';

function Navigation() {
  const { viewSection } = useViewTracker();

  return (
    <nav>
      <a href="#intro" className={viewSection === 'intro' ? 'active' : ''}>
        소개
      </a>
      <a href="#features" className={viewSection === 'features' ? 'active' : ''}>
        기능
      </a>
      <a href="#pricing" className={viewSection === 'pricing' ? 'active' : ''}>
        가격
      </a>
    </nav>
  );
}

인터섹션 옵션 커스터마이징

topbottom props를 사용하여 언제 섹션을 "보이는 것"으로 간주할지 설정할 수 있습니다.

import { ViewTracker } from '@yoonhaemin-lib/view-tracker';

function CustomSection() {
  return (
    <ViewTracker
      id="custom"
      top={{
        root: null,
        rootMargin: '-100px 0px 0px 0px',
        threshold: 0,
      }}
      bottom={{
        root: null,
        rootMargin: '0px 0px -100px 0px',
        threshold: 1,
      }}
    >
      <div style={{ height: '100vh' }}>커스텀 섹션</div>
    </ViewTracker>
  );
}

스크롤 진행률 표시

import { ViewTrackerProvider, ViewTracker, useViewTracker } from '@yoonhaemin-lib/view-tracker';

function App() {
  return (
    <ViewTrackerProvider>
      <ScrollProgress />
      <Content />
    </ViewTrackerProvider>
  );
}

function ScrollProgress() {
  const { viewSection } = useViewTracker();
  const sections = ['intro', 'features', 'pricing', 'contact'];
  const currentIndex = sections.indexOf(viewSection);

  return (
    <div style={{ position: 'fixed', top: 0, width: '100%', background: '#333' }}>
      {sections.map((section, index) => (
        <div
          key={section}
          style={{
            display: 'inline-block',
            width: '25%',
            height: '4px',
            background: index <= currentIndex ? '#007bff' : '#ccc',
          }}
        />
      ))}
    </div>
  );
}

function Content() {
  return (
    <>
      <ViewTracker id="intro">
        <section style={{ height: '100vh' }}>인트로</section>
      </ViewTracker>
      <ViewTracker id="features">
        <section style={{ height: '100vh' }}>기능</section>
      </ViewTracker>
      <ViewTracker id="pricing">
        <section style={{ height: '100vh' }}>가격</section>
      </ViewTracker>
      <ViewTracker id="contact">
        <section style={{ height: '100vh' }}>연락처</section>
      </ViewTracker>
    </>
  );
}

네비게이션 하이라이팅

import { ViewTrackerProvider, ViewTracker, useViewTracker } from '@yoonhaemin-lib/view-tracker';

function StickyNav() {
  const { viewSection } = useViewTracker();

  const navItems = [
    { id: 'home', label: '홈' },
    { id: 'about', label: '소개' },
    { id: 'services', label: '서비스' },
    { id: 'portfolio', label: '포트폴리오' },
  ];

  return (
    <nav style={{ position: 'sticky', top: 0, background: 'white', padding: '1rem' }}>
      {navItems.map((item) => (
        <a
          key={item.id}
          href={`#${item.id}`}
          style={{
            marginRight: '1rem',
            fontWeight: viewSection === item.id ? 'bold' : 'normal',
            color: viewSection === item.id ? '#007bff' : '#333',
          }}
        >
          {item.label}
        </a>
      ))}
    </nav>
  );
}

API Reference

useViewTracker()

현재 화면에 보이는 섹션 정보를 반환하는 훅입니다.

반환값

| 반환값 | 타입 | 설명 | | ---------------- | ---------------------- | -------------------------------------------- | | viewSection | string | 현재 뷰포트에 보이는 섹션의 ID | | setViewSection | (id: string) => void | 섹션 ID를 수동으로 설정하는 함수 (고급 사용) |

ViewTrackerProvider

뷰 트래킹 기능을 제공하는 Context Provider입니다.

Props

| Props | 타입 | 필수 | 설명 | | ---------- | ----------------- | ---- | ------------------------------------ | | children | React.ReactNode | ✅ | 트래킹할 섹션을 포함한 자식 컴포넌트 |

ViewTracker

특정 섹션을 추적하는 컴포넌트입니다.

Props

| Props | 타입 | 필수 | 기본값 | 설명 | | ---------- | -------------------------- | ---- | ------ | ------------------------- | | id | string | ✅ | - | 추적할 섹션의 고유 ID | | children | React.ReactNode | ✅ | - | 섹션의 콘텐츠 | | top | IntersectionObserverInit | ❌ | - | 상단에 대한 인터섹션 옵션 | | bottom | IntersectionObserverInit | ❌ | - | 하단에 대한 인터섹션 옵션 |

License

MIT © Yoon Hae Min