如何解决如何使用CSS蒙版对骨架屏幕进行动画处理 编辑
我正在尝试向骨架this one添加微妙的闪光动画。我目前有一个看起来像这样的屏幕(请参见CodePen)
我正在尝试编写一个可以接受SVG的骨架组件,如下所示:
<div class="skeleton" aria-busy="true">
<svg width="233" height="68" viewBox="0 0 233 68" xmlns="http://www.w3.org/2000/svg">
<g opacity="0.8">
<rect x="79" y="32" width="154" height="11" rx="2" fill="black" fill-opacity="0.07"/>
<rect width="179" height="20" rx="2" fill="black" fill-opacity="0.07"/>
<rect x="79" y="52" width="84" height="11" rx="2" fill="black" fill-opacity="0.07"/>
<rect y="26" width="67" height="42" rx="2" fill="black" fill-opacity="0.07"/>
</g>
</svg>
</div>
这是我用来为SVG上方的微光设置动画的CSS:
.skeleton {
overflow: hidden;
position: relative;
}
.skeleton::before {
content: '';
position: absolute;
top: 0;
left: 0;
bottom: 0;
right: 0;
background: linear-gradient(to right,rgb(243,242,241) 0%,rgb(237,235,233) 50%,241) 100%) 0px 0px / 90% 100% no-repeat rgb(243,241);
transform: translateX(-100%);
animation-name: skeleton-animation;
animation-duration: 2s;
animation-timing-function: ease-in-out;
animation-direction: normal;
animation-iteration-count: infinite;
}
@keyframes skeleton-animation {
0% {
transform: translateX(-100%);
}
100% {
transform: translateX(100%);
}
}
我正在尝试找出如何使用here中所述的某种遮罩,以便动画闪光仅发生在SVG上。
解决方法
一种方法可能是将SVG
用作mask-image
并更新线性渐变background-position
:
示例(使用您自己的渐变色更新)。
.skeleton {
overflow: hidden;
position: relative;
width: 233px;
height: 68px;
background: linear-gradient(to right,rgb(143,142,141) 0%,rgb(237,235,233) 50%,141) 100%) 0px 0px / 100% 100% rgb(243,242,241);
-webkit-mask-image: url("data:image/svg+xml;base64,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");
margin: 1em;
animation: linearAnim 2s infinite linear
}
@keyframes linearAnim {
0% {
background-position: 0px 0px;
}
100% {
background-position: 230px 0px;
}
}
/* demo purpose only */
.skeleton + .skeleton {
background: linear-gradient(to right,rgba(143,141,0.75) 0%,rgba(237,233,0.75) 50%,0.75) 100%) 0px 0px / 100% 100% rgba(243,241,0.5);
}
.skeleton.blue {
background-color:blue;
}
.skeleton.red {
background-color:red;
}
.skeleton.yellow {
background-color:yellow;
}
.skeleton.green {
background-color:green;
}
.flex {display:flex;align-items:center;justify-content:center;box-sizing:border-box;padding-top:0.6em;font-size:10px;color:#fff8;}
body {background:#bee; display:grid;grid-template-columns:repeat(auto-fill,300px);}
<div class="skeleton" aria-busy="true"></div>
<div class="skeleton blue" aria-busy="true"></div>
<div class="skeleton red" aria-busy="true"></div>
<div class="skeleton yellow" aria-busy="true"></div>
<div class="skeleton green flex" aria-busy="true">On its way ...</div>
这是一个使用不同方法CSS animation,only render overlay on specific elements
的类似问题编辑
如果要求将SVG放在HTMl中,则可以给它一个ID并即时进行编码
// https://www.w3docs.com/snippets/javascript/how-to-encode-and-decode-strings-with-base64-in-javascript.html
let svg = document.getElementById("mask").outerHTML
let sk =document.querySelector(".skeleton");
let encodedString = btoa(svg);
sk.setAttribute("style"," -webkit-mask-image: url('data:image/svg+xml;base64," + encodedString + "')");
.skeleton {
overflow: hidden;
position: relative;
width: 233px;
height: 68px;
background: linear-gradient( to right,141) 100%) 0 0 / 200% 100% rgb(243,241);
margin: 1em;
animation: linearAnim 1.25s infinite linear;
}
@keyframes linearAnim {
100% {
background-position: -200% 0;
}
}
#mask {
display: none;
}
<div class="skeleton" aria-busy="true">
<svg id="mask" width="233" height="68" viewBox="0 0 233 68" xmlns="http://www.w3.org/2000/svg">
<g opacity="0.5">
<rect x="79" y="32" width="154" height="11" rx="2" fill="black" fill-opacity="0.5"/>
<rect width="179" height="20" rx="2" fill="black" fill-opacity="0.5"/>
<rect x="79" y="52" width="84" height="11" rx="2" fill="black" fill-opacity="0.5"/>
<rect y="26" width="67" height="42" rx="2" fill="black" fill-opacity="0.5"/>
</g>
</svg>
</div>
,
如果您不需要使用SVG,那么使用HTML会更容易一些。但是,这是使用SVG的方法。
.shimmer-rect {
animation-name: skeleton-animation;
animation-duration: 2s;
animation-timing-function: linear;
animation-direction: normal;
animation-iteration-count: infinite;
}
@keyframes skeleton-animation {
0% {
transform: translateX(0px);
}
100% {
transform: translateX(2000px);
}
}
.skeleton {
margin-bottom: 2em;
}
<!-- Include this once somewhere in your HTML -->
<svg width="0" height="0" style="position: absolute">
<defs>
<linearGradient id="shimmer" gradientUnits="userSpaceOnUse" x2="2000" spreadMethod="repeat">
<stop offset="15%" stop-color="rgb(237,233)"/>
<stop offset="25%" stop-color="rgb(243,241)"/>
<stop offset="35%" stop-color="rgb(237,233)"/>
</linearGradient>
<mask id="shimmer-mask">
<rect x="79" y="32" width="154" height="11" rx="2" fill="white"/>
<rect width="179" height="20" rx="2" fill="white"/>
<rect x="79" y="52" width="84" height="11" rx="2" fill="white"/>
<rect y="26" width="67" height="42" rx="2" fill="white"/>
</mask>
<g id="skel" mask="url(#shimmer-mask)">
<rect class="shimmer-rect" x="-2000" width="3000" height="100%" fill="url(#shimmer)"/>
</g>
</defs>
</svg>
<div class="skeleton" aria-busy="true">
<svg width="233" height="68" viewBox="0 0 233 68"> <use xlink:href="#skel"/> </svg>
</div>
<div class="skeleton" aria-busy="true">
<svg width="233" height="68" viewBox="0 0 233 68"> <use xlink:href="#skel"/> </svg>
</div>
<div class="skeleton" aria-busy="true">
<svg width="233" height="68" viewBox="0 0 233 68"> <use xlink:href="#skel"/> </svg>
</div>
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