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<template>
<div
:style="styles"
class="spinner spinner--ping-pong">
<div
:style="innerStyles"
class="spinner-inner">
<div class="board">
<div class="left" />
<div class="right" />
<div class="ball" />
</div>
</div>
</div>
</template>
<script>
export default {
props: {
size: {
'type': String,
'default': '60px'
}
},
computed: {
innerStyles() {
const size = parseInt(this.size, 10);
return { transform: `scale(${size / 250})` };
},
styles() {
return {
width: this.size,
height: this.size
};
}
}
};
</script>
<style lang="scss" scoped>
.spinner{
overflow: hidden;
display: flex;
justify-content: center;
align-items: center;
* {
line-height: 0;
box-sizing: border-box;
}
}
.board {
width:250px;
position: relative;
}
.left,
.right {
height:50px;
width:15px;
background:#41b883;
display: inline-block;
position:absolute;
}
.left {
left:0;
animation: pingpong-position1 2s linear infinite;
}
.right {
right:0;
animation: pingpong-position2 2s linear infinite;
}
.ball{
width:15px;
height:15px;
border-radius:50%;
background:#f7484e;
position:absolute;
animation: pingpong-bounce 2s linear infinite;
}
@keyframes pingpong-position1 {
0% {top:-60px;}
25% {top:0;}
50% {top:60px;}
75% {top:-60px;}
100% {top:-60px;}
}
@keyframes pingpong-position2 {
0% {top:60px;}
25% {top:0;}
50% {top:-60px;}
75% {top:-60px;}
100% {top:60px;}
}
@keyframes pingpong-bounce {
0% {top:-35px;left:10px;}
25% {top:25px;left:225px;}
50% {top:75px;left:10px;}
75% {top:-35px;left:225px;}
100% {top:-35px;left:10px;}
}
</style>
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