77 lines
1.4 KiB
Vue
77 lines
1.4 KiB
Vue
<template>
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<div
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class="marquee"
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:class="{ overflowed }"
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:style="`--shift-width: ${shiftWidth}`"
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ref="root"
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>
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<div class="inner" ref="inner">
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<slot></slot>
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</div>
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</div>
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</template>
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<script lang="ts">
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import { defineComponent, onMounted, ref } from "vue";
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export default defineComponent({
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name: "Marquee",
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setup() {
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const root = ref<HTMLDivElement | null>(null);
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const inner = ref<HTMLDivElement | null>(null);
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const overflowed = ref(false);
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const shiftWidth = ref("unset");
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onMounted(() => {
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const resizeObserver = new ResizeObserver(() => {
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overflowed.value = root.value!.scrollWidth > root.value!.clientWidth;
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shiftWidth.value = `-${
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inner.value!.clientWidth - root.value!.clientWidth
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}px`;
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});
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resizeObserver.observe(inner.value!);
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});
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return {
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root,
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inner,
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overflowed,
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shiftWidth,
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};
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},
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});
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</script>
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<style scoped lang="scss">
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.marquee {
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line-height: 1;
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overflow: hidden;
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}
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.inner {
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white-space: nowrap;
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display: inline-block;
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}
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</style>
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<style lang="scss">
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.overflowed .inner {
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animation: marquee 12s ease-in-out infinite;
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--padding: .5em;
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}
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@keyframes marquee {
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0% {
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transform: translateX(var(--padding));
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}
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50% {
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transform: translateX(calc(var(--shift-width) - var(--padding)));
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}
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100% {
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transform: translateX(var(--padding));
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}
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}
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</style>
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