theme-ui
**WIP** Themeable UI components for themes
Last updated 6 years ago by jxnblk .
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theme-ui

WIP Themeable UI components for themes

Build Status Version

  • Uses Emotion for isolated styles
  • Uses the MDX component provider for content styles
  • Follows standard theming conventions for interoperable stylistic themes
  • Uses @styled-system/css for using theme values in the css prop
  • Includes base page layout components

Getting Started

npm i theme-ui

Wrap your application with the ThemeProvider component

// basic usage
import React from 'react'
import { ThemeProvider } from 'theme-ui'
import theme from './theme'

export default props =>
  <ThemeProvider theme={theme}>
    {props.children}
  </ThemeProvider>

css prop

Use the css prop in your application, along with the css utility to pick up values from the theme. The css utility is from @styled-system/css.

import React from 'react'
import { css } from 'theme-ui'

export default () =>
  <div
    css={css({
      fontSize: 4,
      fontWeight: 'bold',
      color: 'primary', // picks up values from theme
    })}>
    Hello
  </div>

MDX Components

Use the components prop to add components to MDX scope. The ThemeProvider is a combination of MDXProvider and Emotion's ThemeProvider.

// with mdx components
import React from 'react'
import { ThemeProvider } from 'theme-ui'
import mdxComponents from './mdx-components'
import theme from './theme'

export default props =>
  <ThemeProvider
    components={mdxComponents}
    theme={theme}>
    {props.children}
  </ThemeProvider>

This will render child MDX documents with the components provided via context. For use outside of MDX (e.g. Remark Markdown) the styles could be applied with a wrapper component.

theme.styles

The MDX components can also be styled via the theme.styles object. This can be used as a mechanism to pass Typography.js-like styles to MDX content.

// example theme
export default {
  colors: {
    primary: '#33e',
  },
  styles: {
    // this styles child MDX `<h1>` components
    h1: {
      fontSize: 32,
      // this value comes from the `color` object
      color: 'primary',
    },
  }
}

Styled components

These components' styles can also be consumed outside of an MDX doc with the Styled component. Note that these are only styled using the same theme.styles object and not the same components passed to the ThemeProvider context.

import React from 'react'
import { Styled } from 'theme-ui'

export default props =>
  <Styled.div>
    <Styled.h1>
      Hello
    </Styled.h1>
  </Styled.div>

To change the underlying component in Styled, use the as prop.

<Styled.a as={Link} to='/'>Home</Styled.a>

Layout Components

Theme UI includes several components for creating page layouts.

  • Layout: sets a flex column with 100vh min-height
  • Header: flexbox row
  • Footer: flexbox row
  • Main: flex auto container for pushing the Footer to the bottom of the viewport
  • Container: max-width, centered container
import React from 'react'
import {
  Layout,
  Header,
  Main,
  Container,
  Footer
} from 'theme-ui'

export default props =>
  <Layout>
    <Header>
      Hello
    </Header>
    <Main>
      <Container>
        {props.children}
      </Container>
    </Main>
    <Footer>
      © 2019
    </Footer>
  </Layout>

Box & Flex

The Box & Flex layout components are similar to the ones found in Rebass, but are built with Emotion and @styled-system/css.

import React from 'react'
import { Flex, Box } from 'theme-ui'

export default props =>
  <Flex flexWrap='wrap'>
    <Box width={[ 1, 1/2 ]} />
    <Box width={[ 1, 1/2 ]} />
  </Flex>

MIT License

Current Tags

  • 0.1.3-0.0                                ...           alpha (6 years ago)
  • 0.16.2-scale-tuples.0                                ...           canary (a year ago)
  • 0.17.2-develop.0                                ...           develop (7 days ago)
  • 0.4.0-highlight.0                                ...           highlight (5 years ago)
  • 0.17.1                                ...           latest (2 months ago)
  • 0.6.0-alpha.8                                ...           next (4 years ago)

501 Versions

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