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switch-phone-color-when-scroll.html
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switch-phone-color-when-scroll.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Document</title>
<script src="/lib/gsap.min.js"></script>
<script src="/lib/ScrollTrigger.min.js"></script>
<style>
body {
height: 4500px;
}
.containerX {
position: absolute;
width: 100%;
bottom: 0;
height: 100vh;
}
/* transform: translate(695px, 575px) scale(2.5, 2.5); */
/* 层级3： 图片 */
.umx-img {
margin: 0; /* 去除默认 margin */
background-size: 461px 605px;
background-position: center;
background-repeat: no-repeat;
width: 461px;
height: 605px;
}
/* 层级2：包裹高度 100vh */
.f-box {
position: absolute;
bottom: 0;
height: 100vh;
min-height: 750px;
display: flex;
align-items: center;
}
/* 层级1：滚动时，改变高度百分比实现颜色切换 */
.f-mask {
position: absolute;
width: 100%;
height: 0;
bottom: 0;
}
/* 层级0: 固定图片在中间 */
.umx-figure {
width: 461px;
margin: 0;
height: 100vh;
min-height: 750px;
position: absolute;
left: 50%;
top: 50%;
transform: translate(-50%, -50%);
z-index: 99;
}
.umx-img.umx-f1 {
background-image: url(./images/iqooneo7-color-img1-md.png);
}
.umx-img.umx-f2 {
background-image: url(./images/iqooneo7-color-img2-md.png);
}
.umx-img.umx-f3 {
background-image: url(./images/iqooneo7-color-img3-md.png);
}
.color-bg {
position: absolute;
width: 100%;
height: 0;
bottom: 0;
overflow: hidden;
}
.color-bg.orange-bg {
background-color: #ffeee8;
}
.color-bg.blue-bg {
background-color: #effbfc;
}
.color-bg.black-bg {
background-color: #dae1e7;
}
.mask-box {
position: absolute;
width: 50%;
height: 100vh;
min-height: 750px;
left: 0;
bottom: 0;
overflow: hidden;
}
.color-txt {
width: 230px;
height: 100vh;
position: absolute;
left: 50%;
bottom: 0;
transform: translateX(-50%);
display: flex;
align-items: flex-start;
flex-direction: column;
justify-content: center;
font-family: Arial, Helvetica, sans-serif;
}
.color-txt strong {
font-size: 84px;
}
.color-txt p {
font-size: 34px;
}
.orange-bg strong {
color: #f6683a;
}
.orange-bg p {
color: #fdbfab;
}
.blue-bg strong {
color: #38bec1;
}
.blue-bg p {
color: #a5e2e4;
}
.black-bg strong {
color: #182130;
}
.black-bg p {
color: #94aab8;
}
</style>
</head>
<body>
<div>
<div class="containerX">
<!-- 3张手机图片叠加 -->
<div class="umx-figure">
<div class="f-mask umx-orange" style="overflow: hidden; height: 100%">
<div class="f-box">
<figure
class="umx-img umx-f1"
style="transform: translate(0px, 0px)"
></figure>
</div>
</div>
<div
class="f-mask umx-blue"
style="display: block; overflow: hidden; height: 0%"
>
<div class="f-box">
<figure class="umx-img umx-f2"></figure>
</div>
</div>
<div
class="f-mask umx-black"
style="display: block; overflow: hidden; height: 0%"
>
<div class="f-box">
<figure class="umx-img umx-f3"></figure>
</div>
</div>
</div>
<!-- 三个背景叠加 -->
<div class="mask-box">
<!-- -->
<div class="color-bg orange-bg active" style="height: 100%">
<div class="color-txt" style="transform: translate(-50%, 0%)">
<strong>橙</strong>
<p>大胆和前卫<br />的姿态</p>
</div>
</div>
<!-- style="height: 7.369%;" -->
<div class="color-bg blue-bg" style="height: 0%">
<div class="color-txt" style="transform: translate(-50%, 0%)">
<strong>蓝</strong>
<p>挑战和突破<br />的精神</p>
</div>
</div>
<div class="color-bg black-bg" style="height: 0px">
<div class="color-txt" style="transform: translate(-50%, 0%)">
<strong>黑</strong>
<p>简洁跳动<br />的语言</p>
</div>
</div>
</div>
</div>
</div>
<script>
gsap.registerPlugin(ScrollTrigger);
// pin 为 true 时，触发动画的元素 在滚动时可以保持不向上滚动，让整个容器在滚动时固定
gsap.to(".containerX", {
opacity: 1,
scrollTrigger: {
trigger: ".containerX",
start: "top top",
end: "240%", // 向下滚动 240% 距离时结束
scrub: true, // 表示动画可以重复执行改成false表示只执行一次
// markers: true, // 绘制开始位置和结束位置的线条
pin: true, // 动画执行期间，页面不进行滚动，动画执行结束后
},
});
// 第一次动画，橙/蓝颜色切换
// 蓝色手机覆盖橙色手机，触发实际，.umx-blue 进入 viewport
gsap.to(".umx-blue", {
height: "100%",
ease: "expo-out",
scrollTrigger: {
trigger: ".umx-blue",
scrub: true,
// markers: true,
},
});
gsap.to(".blue-bg", {
height: "100%",
ease: "expo-out",
scrollTrigger: {
trigger: ".blue-bg",
scrub: true,
// markers: true,
},
});
// 第二次动画，黑/蓝手机切换
// 等 blue 蓝色手机动画结束后，其 top 到达 viewport 视窗顶部时，触发下次动画
gsap.to(".umx-black", {
height: "100%",
scrollTrigger: {
trigger: ".blue-bg",
start: "top top",
end: "+1200",
scrub: true,
// markers: true,
},
});
gsap.to(".black-bg", {
height: "100%",
scrollTrigger: {
trigger: ".blue-bg",
start: "top top",
end: "+1200",
scrub: true,
// markers: true,
},
});
// gsap.fromTo(".phone-wrap img", { x: 695,y: 575, scale: 2.5,}, {x: 0, yy: 0, scale: 1});
</script>
</body>
</html>