gsap+ScrollTrigger实现可拐角弯曲的滚动条效果代码-html代码-BFW代码库

代码语言：html

代码描述：gsap+ScrollTrigger实现可拐角弯曲的滚动条效果代码，配合dat.gui可修改参数

下面为部分代码预览，完整代码请点击下载或在bfwstudio webide中打开

<!DOCTYPE html>
<html lang="en" >

<head>
  <meta charset="UTF-8">
 
  
  
<style>
*,
*:after,
*:before {
	box-sizing: border-box;
}

:root {
	--size: 300px;
	--radius: 32;
	--padding: 64px;
	--bg: hsl(180 0% 33%);
	--bar: hsl(0 0% 100% / 0.5);
	--panel: hsl(20 60% 50%);
	timeline-scope: --scroller;
}

body {
	display: grid;
	place-items: center;
	min-height: 100vh;
	background: hsl(0 0% 2%);
	font-family: "SF Pro Text", "SF Pro Icons", "AOS Icons", "Helvetica Neue", Helvetica, Arial, sans-serif, system-ui;
}

/**
 * Think the idea here would be to translate a fake scrollbar up/down
 * Clip the edges and rotate a clipped bordered element on the ends
 * If we need the fatness, we need to go with something like a morphing SVG
 * Or we might get away with transform-origin 100% 0 and scale 1.1 to get the thicc
 * Might be easier to drop two SVG at each end though for that.
 * */

.scroller {
	position: relative;
	width: 300px;
	aspect-ratio: 3 / 4;
	resize: both;
	overflow: hidden;
	padding: 0 0.5rem 0 0;
}

.bar__thumb,
.bar__track {
	opacity: 0;
	transition: opacity 0.2s;
}


[data-rounded-scroll] .scroller :is(.bar__thumb, .bar__track) {
  opacity: 1;
}	

.scroller > svg {
	position: absolute;
	top: 0;
	bottom: 0;
	right: 0.5rem;
	pointer-events: none;
	height: 100%;
	width: calc(var(--radius) * 2px);
	overflow: visible !important;
}

[data-rounded-scroll] .scroller ul::-webkit-scrollbar {
  display: none;
}

[data-rounded-scroll] ul::-webkit-scrollbar { display: none; opacity: 0 !important; }

[data-rounded-scroll] .scroller ul {
	scrollbar-width: 0;
	scrollbar-width: none;
	-ms-overflow-style: none;
}

.scroller path {
	stroke-width: calc(var(--stroke-width) * 1px);
}

.bar__thumb {
	stroke: hsl(0 0% 100% / var(--bar-alpha, 0.5));
	stroke-dasharray: var(--thumb-size) var(--track-length);
}

@supports (animation-timeline: scroll()) {
	.bar__thumb {
		-webkit-animation: scroll both linear;
		        animation: scroll both linear;
		animation-timeline: --scroller;
	}	
}

/* Keyframes are generated via JavaScript for dynamic stuff */

.bar__track {
	stroke: hsl(0 0% 100% / var(--track-alpha, 0));
}

.scroller ul {
 	height: 100%;
 	width: 100%;
 	overflow: auto;
 	background: var(--bg);
 	border-radius: calc(var(--radius) * 1px);
 	display: grid;
 	grid-auto-flow: row;
 	gap: 1rem;
 	margin: 0;
 	padding: calc(var(--padding) * 1px) 0;
 	list-style-type: none;
 	-ms-scroll-snap-type: y mandatory;
 	    scroll-snap-type: y mandatory;
 	scroll-timeline: --scroller;
 	scroll-behavior: smooth;
}

.scroller li {
 	background: var(--panel);
 	height: calc(var(--size) * 0.75);
 	width: 100%;
 	border-radius: calc(var(--radius) * 1px);
 	scroll-snap-align: center;
}

.scroller li:first-of-type {
 	scroll-snap-align: start;
}

.scroller li:last-of-type {
 	scroll-snap-align: end;
}

body::before {
	--line: hsl(0 0% 95% / 0.15);
	content: "";
	height: 100vh;
	width: 100vw;
	position: fixed;
	background:
		linear-gradient(90deg, var(--line) 1px, transparent 1px 10vmin) 0 -5vmin / 10vmin 10vmin,
		linear-gradient(var(--line) 1px, transparent 1px 10vmin) 0 -5vmin / 10vmin 10vmin;
	-webkit-mask: linear-gradient(-15deg, transparent 30%, white);
	        mask: linear-gradient(-15deg, transparent 30%, white);
	top: 0;
	z-index: -1;
	transform: translate3d(0, 0, -100vmin);
}
</style>


  
  
</head>

<body >
  <div class="scroller">
  <svg class="scroller__bar bar" viewBox="0 0 56 56" xmlns="http://www.w3.org/2000/svg">
    <path class="bar__thumb" fill="none" stroke-linecap="round" />
    <path class="bar__track" fill="none" stroke-linecap="round" />
  </svg>
  <ul>
    <li></li>
    <li></li>
    <li></li>
    <li></li>
    <li></li>
  </ul>
  <style id="scroller-frames"></style>
</div>
  <script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/gsap.3.12.2.js"></script>
  <script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/ScrollTrigger.3.10.4.js"></script>
  <script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/dat.gui-min.js"></script>
      <script >


const scroller = document.querySelector('.scroller');
const list = scroller.querySelector('ul');
const bar = scroller.querySelector('.scroller__bar');
const track = scroller.querySelector('.bar__track');
const thumb = bar.querySelector('.bar__thumb');
const styles = scroller.querySelector('style');

const CONFIG = {
  show: true,
  radius: 32,
  scrollPadding: 100,
  stroke: 7,
  inset: 4,
  trail: 0,
  track: true,
  thumb: 80,
  finish: 5,
  alpha: 0.75,
  track: 0,
  cornerLength: 0 };


/**
 * Set up a ResizeObserver that syncs the SVG path and viewBox
 * with the size of the scroller. If you have a static sized scroller
 * and radius, etc. You can take a snapshot of it and use it over and over.
 * The ResizeObserver is mainly for demo purposes so you can make what you
 * want.
 * */
const syncBar = scrollerBar => {
  const mid = CONFIG.radius;
  const innerRad = Math.max(
  0,
  CONFIG.radius - (CONFIG.inset + CONFIG.stroke * 0.5));

  const padTop = CON.........完整代码请登录后点击上方下载按钮下载查看