feat(Box): Complete the basics of acrylic

Author: chenyueban

.eslintrc

@@ -39,6 +39,7 @@
     "prettier/prettier": ["error", {}],
     "linebreak-style": ["error", "unix"],
     "react-hooks/rules-of-hooks": "error",
-    "react-hooks/exhaustive-deps": "warn"
+    "react-hooks/exhaustive-deps": "warn",
+    "@typescript-eslint/no-non-null-assertion": "off"
   }
 }

.gitignore

@@ -12,3 +12,4 @@ compiled
 public
 .cache
 build
+design

packages/fluent-ui.com/src/docs/components/Box/README.md

@@ -0,0 +1,36 @@
+---
+title: Box
+components: Box
+---
+
+# Box
+
+<p class="description">Box</p>
+
+## Use Acrylic
+
+Backdrop filter is currently baked under CSS Filters Level 2, and at the time of the writing, it only works work in Safari 9 with the `-webkit-` prefix, and Chrome as well as Opera by enabling the “Experimental Web Platform Features” [under the chrome://flags menu](https://webdesign.tutsplus.com/tutorials/css-backdrop-filters--cms-27314).
+
+```jsx
+<div style={{
+  padding: '6em 8em',
+  background: 'url(https://i.loli.net/2019/06/08/5cfb6d5a7456419123.jpg) center/cover'
+}}>
+  <Box acrylic={true} padding={{ sm: 15, lg: 25 }} color='#fff'>
+    Acrylic
+  </Box>
+</div>
+```
+
+## Without Acrylic
+
+```jsx
+<div style={{
+  padding: '6em 8em',
+  background: 'url(https://i.loli.net/2019/06/08/5cfb6d5a7456419123.jpg) center/cover'
+}}>
+  <Box padding={{ sm: 15, lg: 25 }} color='#fff'>
+    Acrylic
+  </Box>
+</div>
+```

packages/fluent-ui.com/src/images/bg.jpg

@@ -0,0 +1,45 @@
+import React, { SFC, ReactElement } from 'react'
+import styled, { Box as BaseBox } from '@xstyled/styled-components'
+
+interface BoxProps {
+  as?: string
+  acrylic?: boolean
+}
+
+const Acrylic = styled.box`
+  position: relative;
+  overflow: hidden;
+  backdrop-filter: blur(10px);
+  &::before,
+  &::after {
+    content: '';
+    position: absolute;
+    left: 0;
+    right: 0;
+    top: 0;
+    bottom: 0;
+  }
+  &::before {
+    z-index: -2;
+    opacity: 0.5;
+    background-color: black;
+  }
+  &::after {
+    z-index: -1;
+    opacity: 0.25;
+    background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADIAAAAyCAMAAAAp4XiDAAAAUVBMVEWFhYWDg4N3d3dtbW17e3t1dXWBgYGHh4d5eXlzc3OLi4ubm5uVlZWPj4+NjY19fX2JiYl/f39ra2uRkZGZmZlpaWmXl5dvb29xcXGTk5NnZ2c8TV1mAAAAG3RSTlNAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEBAQEAvEOwtAAAFVklEQVR4XpWWB67c2BUFb3g557T/hRo9/WUMZHlgr4Bg8Z4qQgQJlHI4A8SzFVrapvmTF9O7dmYRFZ60YiBhJRCgh1FYhiLAmdvX0CzTOpNE77ME0Zty/nWWzchDtiqrmQDeuv3powQ5ta2eN0FY0InkqDD73lT9c9lEzwUNqgFHs9VQce3TVClFCQrSTfOiYkVJQBmpbq2L6iZavPnAPcoU0dSw0SUTqz/GtrGuXfbyyBniKykOWQWGqwwMA7QiYAxi+IlPdqo+hYHnUt5ZPfnsHJyNiDtnpJyayNBkF6cWoYGAMY92U2hXHF/C1M8uP/ZtYdiuj26UdAdQQSXQErwSOMzt/XWRWAz5GuSBIkwG1H3FabJ2OsUOUhGC6tK4EMtJO0ttC6IBD3kM0ve0tJwMdSfjZo+EEISaeTr9P3wYrGjXqyC1krcKdhMpxEnt5JetoulscpyzhXN5FRpuPHvbeQaKxFAEB6EN+cYN6xD7RYGpXpNndMmZgM5Dcs3YSNFDHUo2LGfZuukSWyUYirJAdYbF3MfqEKmjM+I2EfhA94iG3L7uKrR+GdWD73ydlIB+6hgref1QTlmgmbM3/LeX5GI1Ux1RWpgxpLuZ2+I+IjzZ8wqE4nilvQdkUdfhzI5QDWy+kw5Wgg2pGpeEVeCCA7b85BO3F9DzxB3cdqvBzWcmzbyMiqhzuYqtHRVG2y4x+KOlnyqla8AoWWpuBoYRxzXrfKuILl6SfiWCbjxoZJUaCBj1CjH7GIaDbc9kqBY3W/Rgjda1iqQcOJu2WW+76pZC9QG7M00dffe9hNnseupFL53r8F7YHSwJWUKP2q+k7RdsxyOB11n0xtOvnW4irMMFNV4H0uqwS5ExsmP9AxbDTc9JwgneAT5vTiUSm1E7BSflSt3bfa1tv8Di3R8n3Af7MNWzs49hmauE2wP+ttrq+AsWpFG2awvsuOqbipWHgtuvuaAE+A1Z/7gC9hesnr+7wqCwG8c5yAg3AL1fm8T9AZtp/bbJGwl1pNrE7RuOX7PeMRUERVaPpEs+yqeoSmuOlokqw49pgomjLeh7icHNlG19yjs6XXOMedYm5xH2YxpV2tc0Ro2jJfxC50ApuxGob7lMsxfTbeUv07TyYxpeLucEH1gNd4IKH2LAg5TdVhlCafZvpskfncCfx8pOhJzd76bJWeYFnFciwcYfubRc12Ip/ppIhA1/mSZ/RxjFDrJC5xifFjJpY2Xl5zXdguFqYyTR1zSp1Y9p+tktDYYSNflcxI0iyO4TPBdlRcpeqjK/piF5bklq77VSEaA+z8qmJTFzIWiitbnzR794USKBUaT0NTEsVjZqLaFVqJoPN9ODG70IPbfBHKK+/q/AWR0tJzYHRULOa4MP+W/HfGadZUbfw177G7j/OGbIs8TahLyynl4X4RinF793Oz+BU0saXtUHrVBFT/DnA3ctNPoGbs4hRIjTok8i+algT1lTHi4SxFvONKNrgQFAq2/gFnWMXgwffgYMJpiKYkmW3tTg3ZQ9Jq+f8XN+A5eeUKHWvJWJ2sgJ1Sop+wwhqFVijqWaJhwtD8MNlSBeWNNWTa5Z5kPZw5+LbVT99wqTdx29lMUH4OIG/D86ruKEauBjvH5xy6um/Sfj7ei6UUVk4AIl3MyD4MSSTOFgSwsH/QJWaQ5as7ZcmgBZkzjjU1UrQ74ci1gWBCSGHtuV1H2mhSnO3Wp/3fEV5a+4wz//6qy8JxjZsmxxy5+4w9CDNJY09T072iKG0EnOS0arEYgXqYnXcYHwjTtUNAcMelOd4xpkoqiTYICWFq0JSiPfPDQdnt+4/wuqcXY47QILbgAAAABJRU5ErkJggg==);
+  }
+`
+
+const Box: SFC<BoxProps> = (props: BoxProps): ReactElement => {
+  if (props.acrylic) {
+    return <Acrylic {...props} />
+  }
+  return <BaseBox {...props} />
+}
+
+Box.defaultProps = {
+  acrylic: false
+}
+
+export default Box

packages/fluent-ui/src/components/Box/Box.tsx

@@ -0,0 +1 @@
+export { default } from './Box'

packages/fluent-ui/src/components/Box/index.ts

@@ -1,3 +1,5 @@
+export { default as Box } from './components/Box'
 export { default as Button } from './components/Button'
+
 export { default as ThemeProvider } from './components/ThemeProvider'
 export { default as theme, Theme } from './theme'

packages/fluent-ui/src/index.ts

@@ -1,2 +1,3 @@
 declare module '@xstyled/styled-components'
 declare module '@xstyled/system'
+declare module 'react-acrylic'