docs: add view-transitions to dark mode toggle

docs/.vitepress/theme/Layout.vue

@@ -0,0 +1,65 @@
+<script setup lang="ts">
+import { useData } from 'vitepress'
+import DefaultTheme from 'vitepress/theme'
+import { nextTick, provide } from 'vue'
+
+
+const { isDark } = useData()
+
+
+const enableTransitions = (): boolean => 'startViewTransition' in document
+  && window.matchMedia('(prefers-reduced-motion: no-preference)').matches
+
+provide('toggle-appearance', async ({ clientX: x, clientY: y }: MouseEvent) => {
+  if (!enableTransitions()) {
+    isDark.value = !isDark.value
+    return
+  }
+
+  const clipPath = [
+    `circle(0px at ${x}px ${y}px)`,
+    `circle(${Math.hypot(
+      Math.max(x, innerWidth - x),
+      Math.max(y, innerHeight - y)
+    )}px at ${x}px ${y}px)`
+  ]
+
+  await document.startViewTransition(async () => {
+    isDark.value = !isDark.value
+    await nextTick()
+  }).ready
+
+  document.documentElement.animate(
+    { clipPath: isDark.value ? clipPath.reverse() : clipPath },
+    {
+      duration: 300,
+      easing: 'ease-in',
+      pseudoElement: `::view-transition-${isDark.value ? 'old' : 'new'}(root)`
+    }
+  )
+})
+</script>
+
+
+<template>
+  <DefaultTheme.Layout />
+</template>
+
+
+<style>
+::view-transition-old(root),
+::view-transition-new(root) {
+  animation: none;
+  mix-blend-mode: normal;
+}
+
+::view-transition-old(root),
+.dark::view-transition-new(root) {
+  z-index: 1;
+}
+
+::view-transition-new(root),
+.dark::view-transition-old(root) {
+  z-index: 9999;
+}
+</style>

docs/.vitepress/theme/index.ts

@@ -2,14 +2,15 @@ import 'virtual:uno.css'
 
 import DefaultTheme from 'vitepress/theme'
 import { h } from 'vue'
+import Layout from './Layout.vue'
 import type { Theme } from 'vitepress'
 
 import './style.scss'
 
 
 export default {
   'extends': DefaultTheme,
-  Layout: () => h(DefaultTheme.Layout, null, {
+  Layout: () => h(Layout, null, {
     // https://vitepress.dev/guide/extending-default-theme#layout-slots
   }),
   enhanceApp({ app, router, siteData }) {

docs/src/index.md

@@ -3,7 +3,7 @@ layout: home
 
 hero:
   name: Animations Preset for UnoCSS
-  tagline: Simple · Flexible · Beautiful · Composable
+  tagline: Simple · Beautiful · Flexible · Composable
   image:
     src: /logo.svg
     alt: UnoCSS

eslint.config.js

@@ -6,6 +6,11 @@ export default defineConfig(
     typescript: {
       tsconfigPath: ['./tsconfig.json', './tsconfig.node.js.json'],
       projectType: 'lib'
+    },
+    vue: {
+      ruleOptions: {
+        multiWordComponentNames: { ignores: ['Layout'] }
+      }
     }
   },
   {

package.json

@@ -48,8 +48,9 @@
     "docs:preview": "vitepress preview docs"
   },
   "devDependencies": {
-    "@aelita-dev/eslint-config": "^1.0.0",
+    "@aelita-dev/eslint-config": "^1.1.0",
     "@iconify/json": "^2.2.150",
+    "@types/dom-view-transitions": "^1.0.4",
     "@types/markdown-it": "^13.0.7",
     "@unocss/core": "^0.57.7",
     "@unocss/preset-mini": "^0.57.7",