koel/resources/assets/js/components/ui/BtnScrollToTop.vue
2022-12-02 17:17:37 +01:00

51 lines
1.2 KiB
Vue

<template>
<Transition name="fade">
<button v-show="showing" ref="el" title="Scroll to top" type="button" @click="scrollToTop">
<icon :icon="faCircleUp" />&nbsp;
Top
</button>
</Transition>
</template>
<script lang="ts" setup>
import { faCircleUp } from '@fortawesome/free-solid-svg-icons'
import { onMounted, ref } from 'vue'
import { $ } from '@/utils'
const el = ref<HTMLElement>()
const showing = ref(false)
const scrollToTop = () => $.scrollTo(el.value?.parentElement!, 0, 500, () => (showing.value = false))
onMounted(() => {
el.value?.parentElement?.addEventListener('scroll', event => {
showing.value = (event.target as HTMLElement).scrollTop > 64
})
})
</script>
<style lang="scss" scoped>
button {
&.fade-enter, &.fade-leave-to {
opacity: 0;
}
position: fixed;
bottom: calc(var(--footer-height) + 26px);
right: 1.8rem;
z-index: 20;
opacity: 1;
transition: opacity .5s;
border-radius: 9999px;
padding: 8px 16px;
background: rgba(0, 0, 0, .5);
border: 1px solid var(--color-text-primary);
color: var(--color-text-primary);
}
@media screen and (min-width: 415px) {
button {
display: none;
}
}
</style>