大气磅礴的滑块网页背景
<html>
<head>
<meta charset="UTF-8">
<title>大气磅礴的滑块网页背景-LzxBlog</title>
<style>
html,
body {
padding: 0;
margin: 0;
overflow: hidden;
}
* {
box-sizing: border-box;
outline: none;
-webkit-tap-highlight-color: transparent;
cursor: none;
user-select: none;
-webkit-user-drag: none;
}
#main {
display: flex;
}
#main .part {
flex: 1;
}
#main .part .section {
width: 100%;
height: 100vh;
position: relative;
overflow: hidden;
}
#main .part .section img {
width: 100vw;
height: 100vh;
object-fit: cover;
position: absolute;
left: var(--x);
pointer-events: none;
}
.cursor {
width: var(--size);
height: var(--size);
border-radius: 50%;
background: white;
position: absolute;
z-index: 999;
pointer-events: none;
mix-blend-mode: difference;
}
.cursor-f {
width: var(--size);
height: var(--size);
position: absolute;
top: 0;
left: 0;
background-image: url("data:image/svg+xml,%3Csvg width='47' height='47' viewBox='0 0 47 47' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M42.4202 42.4202C38.8403 46 33.3594 46 23.5 46C13.6406 46 8.15966 46 4.57983 42.4202C1 38.8403 1 33.3594 1 23.5C1 13.6406 1 8.15966 4.57983 4.57983C8.15966 1 13.6406 1 23.5 1C33.3594 1 38.8403 1 42.4202 4.57983C46 8.15966 46 13.6406 46 23.5C46 33.3594 46 38.8403 42.4202 42.4202Z' stroke='white'/%3E%3C/svg%3E%0A");
background-size: cover;
mix-blend-mode: difference;
pointer-events: none;
opacity: 0.5;
}
.buttons {
position: absolute;
right: 25px;
top: 50%;
transform: translateY(-50%);
z-index: 99;
}
.buttons button {
border: none;
background-size: contain;
background: url("data:image/svg+xml,%3Csvg width='10' height='29' viewBox='0 0 10 29' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M9 0V27L1 17.4857' stroke='white' stroke-width='2' /%3E%3C/svg%3E%0A") no-repeat;
background-position: center;
width: 10px;
height: 30px;
display: block;
margin: 20px 0;
padding: 0 15px;
transition-duration: 0.6s;
}
.buttons button.next {
transform: scaleY(-1);
}
.buttons button.prev:active {
transform: translateY(8px);
}
.buttons button.next:active {
transform: scaleY(-1) translateY(8px);
}
h1 {
position: absolute;
top: 50%;
transform: translateY(-50%);
left: 0;
right: 0;
margin: auto;
z-index: 99;
color: white;
text-align: center;
font-size: 2.6em;
mix-blend-mode: overlay;
pointer-events: none;
}
.content {
width: 90%;
position: absolute;
bottom: 20px;
text-align: center;
left: 0;
right: 0;
margin: auto;
color: white;
z-index: 99;
font-size: 0.8em;
}
.content p {
margin: 0.5em auto;
}
.content kbd {
width: 15px;
height: 15px;
border: 1px solid white;
display: inline-block;
border-radius: 3px;
font-size: 0.9em;
vertical-align: text-top;
}
.content a {
color: rgba(227, 227, 227, 0.78);
text-decoration: none;
border-bottom: 1px solid currentColor;
}
.content a:hover {
padding-bottom: 1px;
}
</style>
</head>
<body>
<div id="main">
<h1>something</h1>
<div class="content">
<p>You can press <kbd>▲</kbd> <kbd>▼</kbd> on your keyboard or swipe up/down to navigate. Mouse wheel works too.</p>
<p><a href="https://codepen.io/theseventh" target="_blank">codepen</a> // <a href="https://www.liuzhixi.cn" target="_blank">LzxBlog</a>
</div>
<div class="buttons">
<button class="next" onclick="go(-1)"></button>
<button class="prev" onclick="go(1)"></button>
</div>
</div>
<script src='https://cdnjs.cloudflare.com/ajax/libs/gsap/3.2.6/gsap.min.js'></script>
<script>
const cols = 3;
const main = document.getElementById('main');
let parts = [];
let images = [
"https://images.unsplash.com/photo-1549880338-65ddcdfd017b?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=2550&q=80",
"https://images.unsplash.com/photo-1544198365-f5d60b6d8190?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=2550&q=80",
"https://images.unsplash.com/photo-1493246507139-91e8fad9978e?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=2700&q=80"
];
let current = 0;
let playing = false;
for (let i in images) {
new Image().src = images[i];
}
for (let col = 0; col < cols; col++) {
let part = document.createElement('div');
part.className = 'part';
let el = document.createElement('div');
el.className = "section";
let img = document.createElement('img');
img.src = images[current];
el.appendChild(img);
part.style.setProperty('--x', -100/cols*col+'vw');
part.appendChild(el);
main.appendChild(part);
parts.push(part);
}
let animOptions = {
duration: 2.3,
ease: Power4.easeInOut
};
function go(dir) {
if (!playing) {
playing = true;
if (current + dir < 0) current = images.length - 1;
else if (current + dir >= images.length) current = 0;
else current += dir;
function up(part, next) {
part.appendChild(next);
gsap.to(part, {...animOptions, y: -window.innerHeight}).then(function () {
part.children[0].remove();
gsap.to(part, {duration: 0, y: 0});
})
}
function down(part, next) {
part.prepend(next);
gsap.to(part, {duration: 0, y: -window.innerHeight});
gsap.to(part, {...animOptions, y: 0}).then(function () {
part.children[1].remove();
playing = false;
})
}
for (let p in parts) {
let part = parts[p];
let next = document.createElement('div');
next.className = 'section';
let img = document.createElement('img');
img.src = images[current];
next.appendChild(img);
if ((p - Math.max(0, dir)) % 2) {
down(part, next);
} else {
up(part, next);
}
}
}
}
window.addEventListener('keydown', function(e) {
if (['ArrowDown', 'ArrowRight'].includes(e.key)) {
go(1);
}
else if (['ArrowUp', 'ArrowLeft'].includes(e.key)) {
go(-1);
}
});
function lerp(start, end, amount) {
return (1-amount)*start+amount*end
}
const cursor = document.createElement('div');
cursor.className = 'cursor';
const cursorF = document.createElement('div');
cursorF.className = 'cursor-f';
let cursorX = 0;
let cursorY = 0;
let pageX = 0;
let pageY = 0;
let size = 8;
let sizeF = 36;
let followSpeed = .16;
document.body.appendChild(cursor);
document.body.appendChild(cursorF);
if ('ontouchstart' in window) {
cursor.style.display = 'none';
cursorF.style.display = 'none';
}
cursor.style.setProperty('--size', size+'px');
cursorF.style.setProperty('--size', sizeF+'px');
window.addEventListener('mousemove', function(e) {
pageX = e.clientX;
pageY = e.clientY;
cursor.style.left = e.clientX-size/2+'px';
cursor.style.top = e.clientY-size/2+'px';
});
function loop() {
cursorX = lerp(cursorX, pageX, followSpeed);
cursorY = lerp(cursorY, pageY, followSpeed);
cursorF.style.top = cursorY - sizeF/2 + 'px';
cursorF.style.left = cursorX - sizeF/2 + 'px';
requestAnimationFrame(loop);
}
loop();
let startY;
let endY;
let clicked = false;
function mousedown(e) {
gsap.to(cursor, {scale: 4.5});
gsap.to(cursorF, {scale: .4});
clicked = true;
startY = e.clientY || e.touches[0].clientY || e.targetTouches[0].clientY;
}
function mouseup(e) {
gsap.to(cursor, {scale: 1});
gsap.to(cursorF, {scale: 1});
endY = e.clientY || endY;
if (clicked && startY && Math.abs(startY - endY) >= 40) {
go(!Math.min(0, startY - endY)?1:-1);
clicked = false;
startY = null;
endY = null;
}
}
window.addEventListener('mousedown', mousedown, false);
window.addEventListener('touchstart', mousedown, false);
window.addEventListener('touchmove', function(e) {
if (clicked) {
endY = e.touches[0].clientY || e.targetTouches[0].clientY;
}
}, false);
window.addEventListener('touchend', mouseup, false);
window.addEventListener('mouseup', mouseup, false);
let scrollTimeout;
function wheel(e) {
clearTimeout(scrollTimeout);
setTimeout(function() {
if (e.deltaY < -40) {
go(-1);
}
else if (e.deltaY >= 40) {
go(1);
}
})
}
window.addEventListener('mousewheel', wheel, false);
window.addEventListener('wheel', wheel, false);
</script>
</body>
</html>版权声明：本文由 LzxBlog 发布，如需转载请注明出处。
