Vertinext/packages/vuetom/blog/components/switch/VPSwitchAppearance.vue

75 lines
1.4 KiB
Vue

<script lang="ts" setup>
import { APPEARANCE_KEY } from '../../shared.js'
import VPSwitch from './VPSwitch.vue'
import VPIconSun from '../icons/VPIconSun.vue'
import VPIconMoon from '../icons/VPIconMoon.vue'
const toggle = typeof localStorage !== 'undefined' ? useAppearance() : () => {}
function useAppearance() {
const query = window.matchMedia('(prefers-color-scheme: dark)')
const { classList } = document.documentElement
let userPreference = localStorage.getItem(APPEARANCE_KEY) || 'auto'
let isDark = userPreference === 'auto'
? query.matches
: userPreference === 'dark'
query.onchange = (e) => {
if (userPreference === 'auto') {
setClass((isDark = e.matches))
}
}
function toggle() {
setClass((isDark = !isDark))
userPreference = isDark
? query.matches ? 'auto' : 'dark'
: query.matches ? 'light' : 'auto'
localStorage.setItem(APPEARANCE_KEY, userPreference)
}
function setClass(dark: boolean): void {
classList[dark ? 'add' : 'remove']('dark')
}
return toggle
}
</script>
<template>
<VPSwitch
class="VPSwitchAppearance"
aria-label="toggle dark mode"
@click="toggle"
>
<VPIconSun class="sun" />
<VPIconMoon class="moon" />
</VPSwitch>
</template>
<style scoped>
.sun {
opacity: 1;
}
.moon {
opacity: 0;
}
.dark .sun {
opacity: 0;
}
.dark .moon {
opacity: 1;
}
.dark .VPSwitchAppearance :deep(.check) {
/* transform: translateX(18px); */
}
</style>