vue-fontawesome

Font Awesome 5 Vue component using SVG with JS

Introduction
Installation
Add more styles or Pro icons
Usage
Features
FAQ
- Why so explicit (the :icon="['far', 'coffee']" syntax)?

Introduction

Hey there! We're glad you're here...

Upgrading Font Awesome?

If you've used Font Awesome in the past (version 4 or older) there are some things that you should learn before you dive in.

https://fontawesome.com/how-to-use/on-the-web/setup/upgrading-from-version-4

Get started

This package is for integrating with Vue.js. If you aren't using Vue then it's not going to help you. Head over to our "Get Started" page for some guidance.

https://fontawesome.com/how-to-use/on-the-web/setup/getting-started

Learn about our new SVG implementation

This package, under the hood, uses SVG with JS and the @fortawesome/fontawesome-svg-core library. This implementation differs drastically from the web fonts implementation that was used in version 4 and older of Font Awesome. You might head over there to learn about how it works.

https://fontawesome.com/how-to-use/on-the-web/advanced/svg-javascript-core

Going from 0.0.x to 0.1.0

See UPGRADING.md.

You might also be interested in the larger umbrella project UPGRADING.md

Installation

$ npm i --save @fortawesome/fontawesome-svg-core
$ npm i --save @fortawesome/free-solid-svg-icons
$ npm i --save @fortawesome/vue-fontawesome

Add more styles or Pro icons

Brands are separated into their own style and for customers upgrading from version 4 to 5 we have a limited number of Regular icons available.

Visit fontawesome.com/icons to search for free and Pro icons

$ npm i --save @fortawesome/free-brands-svg-icons
$ npm i --save @fortawesome/free-regular-svg-icons

If you are a Font Awesome Pro subscriber you can install Pro packages.

$ npm i --save @fortawesome/pro-solid-svg-icons
$ npm i --save @fortawesome/pro-regular-svg-icons
$ npm i --save @fortawesome/pro-light-svg-icons

Using the Pro packages requires additional configuration.

Or with Yarn:

$ yarn add @fortawesome/fontawesome-svg-core
$ yarn add @fortawesome/free-solid-svg-icons
$ yarn add @fortawesome/vue-fontawesome

Usage

import Vue from 'vue'
import App from './App'
import { library } from '@fortawesome/fontawesome-svg-core'
import { faCoffee } from '@fortawesome/free-solid-svg-icons'
import { FontAwesomeIcon } from '@fortawesome/vue-fontawesome'

library.add(faCoffee)

Vue.component('font-awesome-icon', FontAwesomeIcon)

Vue.config.productionTip = false

/* eslint-disable no-new */
new Vue({
  el: '#app',
  components: { App },
  template: '<App/>'
})

src/App.js

<template>
  <div id="app">
    <font-awesome-icon icon="coffee" />
  </div>
</template>

<script>
export default {
  name: 'App'
}
</script>

Quick warning about self-closing tags

If you are using inline templates or HTML as templates you need to be careful to avoid self-closing tags.

See this issue on the Vue.js project

If you are writing these types of templates make sure and use valid HTML syntax:

<font-awesome-icon icon="coffee"></font-awesome-icon>

Processing i tags into svg using Font Awesome

A basic installation of Font Awesome has the ability to automatically transform <i class="fas fa-coffee"></i> into <svg class="...">...</svg> icons. This technology works with the browser's DOM, requestAnimationFrame, and MutationObserver.

When using the @fortawesome/fontawesome-svg-core package this behavior is disabled by default. This project uses that package so you will have to explicitly enable it like this:

import { dom } from '@fortawesome/fontawesome-svg-core'

dom.watch() // This will kick of the initial replacement of i to svg tags and configure a MutationObserver

The icon property

The icon property of the FontAwesomeIcon component can be used in the following way:

Shorthand that assumes a prefix of "fas"

<font-awesome-icon icon="spinner" />
<font-awesome-icon :icon="['fas', 'spinner']" /> # Same as above

For the above to work you must add the spinner icon to the library.

import { library } from '@fortawesome/fontawesome-svg-core'
import { faSpinner } from '@fortawesome/free-solid-svg-icons'

library.add(faSpinner)

Explicit prefix (note the Vue bind shorthand because this uses an array)

<font-awesome-icon :icon="['far', 'spinner']" />

For the above to work you must add the regular spinner icon (Pro only) to the library.

import { library } from '@fortawesome/fontawesome-svg-core'
import { faSpinner } from '@fortawesome/pro-regular-svg-icons'

library.add(faSpinner)

Explicit icon definition through something like a computed property

<template>
  <div id="app">
    <font-awesome-icon icon="appIcon" />
  </div>
</template>

<script>
import { faChessQueen } from '@fortawesome/free-solid-svg-icons'

export default {
  name: 'App',

  computed: {
    appIcon () {
      return faChessQueen
    }
  }
}
</script>

Alternative using component property

With Vue you can tell your component to resolve other component explicitly.

<template>
  <div>
    <font-awesome-icon :icon="myIcon" />
  </div>
</template>

<script>
import { FontAwesomeIcon } from '@fortawesome/vue-fontawesome'
import { faSpinner } from '@fortawesome/free-solid-svg-icons'

export default {
  name: 'MyComponent',

  data () {
    return {
      myIcon: faSpinner
    }
  },

  components: {
    FontAwesomeIcon
  }
}
</script>

Why use the concept of a library?

Explicitly selecting icons offer the advantage of only bundling the icons that you use in your final bundled file. This allows us to subset Font Awesome's thousands of icons to just the small number that are normally used.

Import the specific icons that you need

import { library } from '@fortawesome/fontawesome-svg-core'
import { faCoffee } from '@fortawesome/free-solid-svg-icons'
import { faSpinner } from '@fortawesome/pro-light-svg-icons'

library.add(faCoffee, faSpinner)

Import entire styles

import { fab } from '@fortawesome/free-brands-svg-icons'

library.add(fab)

This will add the entire brands style to your library. Be careful with this approach as it may be convenient in the beginning but your bundle size will be large. We highly recommend that you take advantage of subsetting through tree shaking.

Tree shaking alternative

Keeping the bundles small when using import { faCoffee } relies on tree-shaking. If you are not using a tool that supports tree shaking you may end up bundling more icons than you intend. Here are some alternative import syntaxes:

import { library } from '@fortawesome/fontawesome-svg-core'
import faCoffee from '@fortawesome/free-solid-svg-icons/faCoffee'
import faSpinner from '@fortawesome/pro-light-svg-icons/faSpinner'

library.add(faCoffee, faSpinner)

How does this work? We have individual icon files like node_modules/@fortawesome/free-solid-svg-icons/faCoffee.js that contain just that specific icon.

Features

The following features are available as part of Font Awesome. Note that the syntax is different from our general web-use documentation.

Register your components first

To use the following examples you must first register your component so Vue is aware of it.

A good place to do this is in main.js or in the module you are calling new Vue(). Make sure you register the component and have added icons to your library before you bootstrap your Vue application.

import Vue from 'vue'
import { FontAwesomeIcon, FontAwesomeLayers, FontAwesomeLayersText } from 'vue-fontawesome'

Vue.component('font-awesome-icon', FontAwesomeIcon)
Vue.component('font-awesome-layers', FontAwesomeLayers)
Vue.component('font-awesome-layers-text', FontAwesomeLayersText)

Basic

Size:

<font-awesome-icon icon="spinner" size="xs" />
<font-awesome-icon icon="spinner" size="lg" />
<font-awesome-icon icon="spinner" size="6x" />

Fixed width:

<font-awesome-icon icon="spinner" fixed-width />

Rotate:

<font-awesome-icon icon="spinner" rotation="90" />
<font-awesome-icon icon="spinner" rotation="180" />
<font-awesome-icon icon="spinner" rotation="270" />

Flip horizontally, vertically, or both:

<font-awesome-icon icon="spinner" flip="horizontal" />
<font-awesome-icon icon="spinner" flip="vertical" />
<font-awesome-icon icon="spinner" flip="both" />

Spin and pulse animation:

<font-awesome-icon icon="spinner" spin />
<font-awesome-icon icon="spinner" pulse />

Border:

<font-awesome-icon icon="spinner" border />

Pull left or right:

<font-awesome-icon icon="spinner" pull="left" />
<font-awesome-icon icon="spinner" pull="right" />

Advanced

Power Transforms:

<font-awesome-icon icon="spinner" transform="shrink-6 left-4" />
<font-awesome-icon icon="spinner" :transform="{ rotate: 42 }" />

Masking:

<font-awesome-icon icon="coffee" :mask="['far', 'circle']" />

Symbols:

<font-awesome-icon icon="edit" symbol />
<font-awesome-icon icon="edit" symbol="edit-icon" />

Layers:

<font-awesome-layers class="fa-lg">
  <font-awesome-icon icon="circle" />
  <font-awesome-icon icon="check" transform="shrink-6" style="color: white;" />
</font-awesome-layers>

Layers text:

<font-awesome-layers full-width class="fa-4x">
  <font-awesome-icon icon="queen"/>
  <font-awesome-layers-text class="gray8" transform="down-2 shrink-8" value="Q" />
</font-awesome-layers>

FAQ

Why so explicit (the :icon="['far', 'coffee']" syntax)?

It's been brought up a few times that the array syntax used for specifying an icon from the library is a bit cumbersome. Initially, this does seem to be the case but we do have good reasons.

How about a separate property for the prefix?

<font-awesome-icon far icon="spinner" />

<font-awesome-icon prefix="far" icon="spinner" />

The problem with this is that it does not provide a consistent or concise way to specify the mask.

<font-awesome-icon far icon="spinner" mask="circle" />

Does the far apply to the icon or the mask? What is the prefix for the property it does not apply to?

Whereas this is consistent and concise:

<font-awesome-icon :icon="['far', 'spinner']" :mask="['fas', 'circle']" />

Bindings become boilerplate and verbose

Since icons are not always static but can change based on Vue component methods or computed values we have to take that into consideration.

Icon properties end up being more verbose:

<font-awesome-icon :far="style === 'far'" :fal="style === 'fal'" :icon="icon" />

vs.

<font-awesome-icon :icon="[style, icon]" />

Or if you are using a prefix property it smells of needless boilerplate:

<template>
  <font-awesome-icon :prefix="iconPrefix" :icon="iconName" />
</template>

<script>
export default {
  computed: {
    iconPrefix() {
      return 'fas'
    },
    iconName() {
      return 'coffee'
    }
  }
}
</script>

vs.

<template>
  <font-awesome-icon :icon="icon" />
</template>

<script>
export default {
  computed: {
    icon() {
      return ['fas', 'coffee']
    }
  }
}
</script>

Properties can disagree with each other

If we allow prefix definition through a property and we also allow an icon to be specified as an object through direct import these two have a chance to argue with eachother. This could lead to some head-scratching when an icon doesn't appear in the expected style.

In the following case which style should be used (light from the icon definition or regular from the far boolean):

import { faSpinner } from `@fortawesome/pro-light-svg-icons`

<template>
  <font-awesome-icon far :icon="faSpinner" />
</template>

<script>
export default {
  data() {
    return {
      faSpinner
    }
  }
}
</script>

patricklewis/vue-fontawesome