README.md 17.6 KB

Avatar

Avatars are a BootstrapVue custom component, and are typically used to display a user profile as a picture, an icon, or short text. <b-avatar> provides several props for customizing its appearance such as color variant and roundness, and optionally supports acting as a button, link or router link.

Overview

Avatars are lightweight components, which render inline by default, so that they are vertically centered beside any adjoining plain text. They also can be used as children of other components.

<template>
  <div>
    <p>Using stand-alone:<p/>
    <div class="mb-4">
      <b-avatar></b-avatar>
      <b-avatar variant="primary" text="BV"></b-avatar>
      <b-avatar variant="info" src="https://placekitten.com/300/300"></b-avatar>
      <b-avatar variant="success" icon="people-fill"></b-avatar>
    </div>
    <p>Using in components (list group) example:<p/>
    <b-list-group style="max-width: 300px;">
      <b-list-group-item class="d-flex align-items-center">
        <b-avatar class="mr-3"></b-avatar>
        <span class="mr-auto">J. Circlehead</span>
        <b-badge>5</b-badge>
      </b-list-group-item>
      <b-list-group-item class="d-flex align-items-center">
        <b-avatar variant="primary" text="BV" class="mr-3"></b-avatar>
        <span class="mr-auto">BootstrapVue</span>
        <b-badge>12</b-badge>
      </b-list-group-item>
      <b-list-group-item class="d-flex align-items-center">
        <b-avatar variant="info" src="https://placekitten.com/300/300" class="mr-3"></b-avatar>
        <span class="mr-auto">Super Kitty</span>
        <b-badge>9</b-badge>
      </b-list-group-item>
      <b-list-group-item class="d-flex align-items-center">
        <b-avatar variant="success" icon="people-fill" class="mr-3"></b-avatar>
        <span class="mr-auto">ACME group</span>
        <b-badge>7</b-badge>
      </b-list-group-item>
    </b-list-group>
  </div>
</template>

<!-- b-avatar.vue -->

Avatar types

The avatar content can be either a an image, an icon, or short text string. Avatar content defaults to the <code>'person-fill'</code> icon when no other content is specified.

You can also supply custom content via the default slot, although you may need to apply additional styling on the content.

Image content

Use the src prop to specify a URL of an image to use as the avatar content. The image should have an aspect ratio of 1:1 (meaning the width and height should be equal), otherwise image aspect distortion will occur. The image will be scaled up or down to fit within the avatar's bounding box.

<template>
  <div class="mb-2">
    <b-avatar src="https://placekitten.com/300/300"></b-avatar>
    <b-avatar src="https://placekitten.com/300/300" size="6rem"></b-avatar>
  </div>
</template>

<!-- b-avatar-src.vue -->

Notes:

  • When using a module bundler and project relative image URLs, please refer to the Component img src resolving reference section for additional details.
  • The src prop takes precedence over the icon and text props.
  • 2.11.0+ If the image fails to load, the avatar will fallback to the value of the icon or text props. If neither the icon or text props are provided, then the default avatar icon will be shown. Also, when the image fails to load, the img-error event will be emitted.
  • Variant colors when using images not normally visible, unless the image fails load. The variant will affect the focus styling when the image avatar is also an actionalble avatar.

Icon content

Easily use one of BootstrapVue’s icons as the avatar content via the icon prop. The prop should be set to a valid icon name. Icons will scale respective to the <code>size</code> prop.

<template>
  <div class="mb-2">
    <b-avatar icon="people-fill"></b-avatar>
    <b-avatar icon="star-fill"></b-avatar>
    <b-avatar icon="music-note"></b-avatar>
    <b-avatar icon="star-fill" size="4em"></b-avatar>
  </div>
</template>

<!-- b-avatar-icon.vue -->

Notes:

  • When providing a BootstrapVue icon name, you must ensure that you have registered the corresponding icon component (either locally to your component/page, or globally), if not using the full <code>BootstrapVueIcons</code> plugin.
  • The icon prop takes precedence over the text prop.
  • If the text, src, or icon props are not provided and the default slot has no content, then the person-fill icon will be used.

Text content

You can specify a short string as the content of an avatar via the text prop. The string should be short (1 to 3 characters), and will be transformed via CSS to be all uppercase. The font size will be scaled relative to the <code>size</code> prop setting.

<template>
  <div class="mb-2">
    <b-avatar text="BV"></b-avatar>
    <b-avatar text="a"></b-avatar>
    <b-avatar text="Foo"></b-avatar>
    <b-avatar text="BV" size="4rem"></b-avatar>
  </div>
</template>

<!-- b-avatar-text.vue -->

Custom content

Use the default slot to render custom content in the avatar, for finer grained control of its appearance, or if using custom icons or SVGs e.g.:

<b-avatar><custom-icon></custom-icon></b-avatar>

Multi-line text example:

<template>
  <div class="mb-2">
    <b-avatar size="4em">Hello<br>World</b-avatar>
    <b-avatar size="4em">你好<br>世界</b-avatar>
  </div>
</template>

<!-- b-avatar-default-slot-multi-line.vue -->

Notes:

  • The default slot takes precedence over the text, src and icon props.
  • The default slot content will be wrapped in a <span> element to ensure proper centering.
  • You may need additional styling applied to the custom content to compensate for the shape of avatar component.

Styling

Variants

Use the variant prop to specify one of Bootstrap theme variant colors. The default variant is secondary.

<template>
  <div>
    <b-avatar variant="secondary"></b-avatar>
    <b-avatar variant="primary"></b-avatar>
    <b-avatar variant="dark"></b-avatar>
    <b-avatar variant="light"></b-avatar>
    <b-avatar variant="success"></b-avatar>
    <b-avatar variant="danger"></b-avatar>
    <b-avatar variant="warning"></b-avatar>
    <b-avatar variant="info"></b-avatar>
  </div>
</template>

<!-- b-avatar-variant.vue -->

If you have defined additional custom variants via SASS theming variables, the custom variants will also be available to use.

Sizing

By default, avatars are sized to 2.5em (which is relative to the current font size). You can change the size of the avatar by changing the current font size, or use the prop size to specify an explicit size. The sizes sm, md and lg default to 1.5em, 2.5em and 3.5em. Numbers get converted to pixel values. Any other value must include the units (such as px, em, or rem).

<template>
  <div>
    <b-avatar></b-avatar>
    <b-avatar size="sm"></b-avatar>
    <b-avatar size="lg"></b-avatar>
    <b-avatar :size="24"></b-avatar>
    <b-avatar size="3em"></b-avatar>
    <b-avatar size="72px"></b-avatar>
  </div>
</template>

<!-- b-avatar-size.vue -->

Note: Avatars are always rendered with an aspect ratio of 1:1.

Square

Prefer a square avatar? simply set the square prop to true.

<template>
  <div>
    <b-avatar square></b-avatar>
  </div>
</template>

<!-- b-avatar-square.vue -->

Rounding

<b-avatar> renders with a circular border radius. You can change the rounding by setting the prop rounded to one of the values true, 'sm', 'lg', 'top', 'left', 'right', or 'bottom'. When set to true (or the empty string ''), it uses the Bootstrap default of medium rounding.

<template>
  <div>
    <b-avatar rounded="sm"></b-avatar>
    <b-avatar rounded></b-avatar>
    <b-avatar rounded="lg"></b-avatar>
    <b-avatar rounded="top"></b-avatar>
    <b-avatar rounded="left"></b-avatar>
    <b-avatar rounded="right"></b-avatar>
    <b-avatar rounded="bottom"></b-avatar>
  </div>
</template>

<!-- b-avatar-rounding.vue -->

Notes:

  • The square prop takes precedence over the rounded prop.
  • Alternatively to to the square prop, you can set the rounded prop to the string '0' to achieve a square avatar.

Alignment

By default <b-avatar> will be vertically centered with its adjoining content. In some cases you may want to alter the alignment, such as ensuring that a text-only avatar aligns its text with the adjoining text. Simply set a vertical alignment utility class on the component, such as <b-avatar class="align-baseline" ...> or <b-avatar class="align-top" ...>, etc.

Actionable avatars

Easily create avatars that respond to clicks, or avatars that change the URL/route when clicked. Actionable avatars will appear in the document tab sequence, and are accessible for both screen reader and keyboard-only users.

Image avatars, when actionalble, employ a basic scale transform on the image when hovered.

Button

Want to trigger the opening of a modal or trigger an action? Set the button prop to instruct <b-avatar> to render as a <button> element. When rendered as a button, the component will emit the click event whenever clicked.

<template>
  <b-list-group>
    <b-list-group-item>
      <b-avatar button @click="onClick" variant="primary" text="FF" class="align-baseline"></b-avatar>
      Button Text Avatar
    </b-list-group-item>
    <b-list-group-item>
      <b-avatar button @click="onClick" src="https://placekitten.com/300/300"></b-avatar>
      Button Image Avatar
    </b-list-group-item>
    <b-list-group-item>
      <b-avatar button @click="onClick" icon="star-fill" class="align-center"></b-avatar>
      Button Icon Avatar
    </b-list-group-item>
  </b-list-group>
</template>

<script>
  export default {
    methods: {
      onClick() {
        this.$bvModal.msgBoxOk('User name: Fred Flintstone', {
          title: 'User Info',
          size: 'sm',
          buttonSize: 'sm',
          okVariant: 'success',
          headerClass: 'p-2 border-bottom-0',
          footerClass: 'p-2 border-top-0'
        })
      }
    }
  }
</script>

<!-- b-avatar-button.vue -->

The prop button-type can be used to control the type of button to render. Supported values are 'button' (the default), 'submit', or 'reset'.

Fancy an avatar as a link or router link? Simply set either the href or to props (respectively). The to prop can either be a string path, or a Location object. The to prop requires that Vue router (or equivalent) be installed.

<template>
  <b-list-group>
    <b-list-group-item>
      <b-avatar href="#foo" variant="primary" text="FF" class="align-baseline"></b-avatar>
      Link Text Avatar
    </b-list-group-item>
    <b-list-group-item>
      <b-avatar href="#bar" src="https://placekitten.com/300/300"></b-avatar>
      Link Image Avatar
    </b-list-group-item>
    <b-list-group-item>
      <b-avatar href="#baz" icon="star-fill" class="align-center"></b-avatar>
      Link Icon Avatar
    </b-list-group-item>
  </b-list-group>
</template>

<!-- b-avatar-href.vue -->

Note:

  • The button prop takes precedence over the href and to props.
  • For additional details on the <router-link> compatible props, please refer to the Router support reference section.

Badge avatars

2.12.0+

Easily add a badge to your avatar via the badge prop or 'badge' slot, and the badge variant can be set via the badge-variant prop. The badge will scale with the size of the avatar.

<template>
  <div>
    <b-avatar badge></b-avatar>
    <b-avatar badge badge-variant="danger" src="https://placekitten.com/300/300"></b-avatar>
    <b-avatar badge badge-variant="warning" icon="people-fill"></b-avatar>
    <b-avatar badge badge-variant="success" src="https://placekitten.com/300/300"></b-avatar>
    <b-avatar badge badge-variant="dark" text="BV"></b-avatar>
    <b-avatar square badge badge-variant="dark" text="BV"></b-avatar>
  </div>
</template>

<!-- b-avatar-badge.vue -->

Badge content

Add textual content to the badge by supplying a string to the badge prop, or use the named slot 'badge'.

<template>
  <div>
    <b-avatar badge="BV"></b-avatar>
    <b-avatar badge="7" variant="primary" badge-variant="dark"></b-avatar>
    <b-avatar badge-variant="info" src="https://placekitten.com/300/300">
      <template #badge><b-icon icon="star-fill"></b-icon></template>
    </b-avatar>
  </div>
</template>

<!-- b-avatar-badge-content.vue -->

Badge positioning

By default the badge appears on the bottom right of the avatar. You can use the badge-top and badge-right boolean props to switch the sides. Combine both props to move the badge to the top right of the avatar.

<template>
  <div>
    <b-avatar badge></b-avatar>
    <b-avatar badge badge-left></b-avatar>
    <b-avatar badge badge-top></b-avatar>
    <b-avatar badge badge-left badge-top></b-avatar>
  </div>
</template>

<!-- b-avatar-badge-position.vue -->

Use the badge-offset prop to control the offset of the badge. The badge-offset must be a valid CSS length string (i.e. '2px', '-2px', '0.5em', etc.). Positive values will move the badge inward, while negative values will move the badge outward.

<template>
  <div>
    <b-avatar badge></b-avatar>
    <b-avatar badge badge-offset="-0.5em"></b-avatar>
    <b-avatar badge badge-offset="-2px"></b-avatar>
    <b-avatar badge badge-offset="2px"></b-avatar>
    <b-avatar badge badge-top></b-avatar>
    <b-avatar badge badge-top badge-offset="-0.5em"></b-avatar>
    <b-avatar badge badge-top badge-offset="-2px"></b-avatar>
    <b-avatar badge badge-top badge-offset="2px"></b-avatar>
  </div>
</template>

<!-- b-avatar-badge-offset.vue -->

Avatar groups

v2.14.0+

Group multiple avatars together by wrapping them in a <b-avatar-group> component:

<template>
  <div>
    <b-avatar-group size="60px">
      <b-avatar></b-avatar>
      <b-avatar text="BV" variant="primary"></b-avatar>
      <b-avatar src="https://placekitten.com/300/300" variant="info"></b-avatar>
      <b-avatar text="OK" variant="danger"></b-avatar>
      <b-avatar variant="warning"></b-avatar>
      <b-avatar src="https://placekitten.com/320/320" variant="dark"></b-avatar>
      <b-avatar icon="music-note" variant="success"></b-avatar>
    </b-avatar-group>
  </div>
</template>

<!-- b-avatar-group.vue -->

Notes:

  • The variant, square and rounded props on <b-avatar-group> will take precedence over the respective props on individual avatars.

Group size

To size the avatars, use the prop size on <b-avatar-group>. The size prop accepts the same type of values as the size prop on <b-avatar>. Note that the size prop will be ignored on individual avatars when they are placed inside a <b-avatar-group>.

<template>
  <div>
    <b-avatar-group size="5rem">
      <b-avatar></b-avatar>
      <b-avatar></b-avatar>
      <b-avatar></b-avatar>
      <b-avatar></b-avatar>
      <b-avatar></b-avatar>
    </b-avatar-group>
  </div>
</template>

<!-- b-avatar-group-size.vue -->

Group variant

Use the variant prop to color all child avatars in the <b-avatar-group>. Note that the variant prop, when set, will override the the variant specified on individual avatars.

<template>
  <div>
    <b-avatar-group variant="success">
      <b-avatar></b-avatar>
      <b-avatar variant="info"></b-avatar>
      <b-avatar></b-avatar>
      <b-avatar></b-avatar>
      <b-avatar></b-avatar>
    </b-avatar-group>
  </div>
</template>

<!-- b-avatar-group-variant.vue -->

Group rounding

Similar to the variant prop, the <b-avatar-group> props square and rounded take precedence over the respective props on individual child avatars.

<template>
  <div>
    <b-avatar-group rounded="lg">
      <b-avatar></b-avatar>
      <b-avatar></b-avatar>
      <b-avatar></b-avatar>
      <b-avatar></b-avatar>
      <b-avatar></b-avatar>
    </b-avatar-group>
  </div>
</template>

<!-- b-avatar-group-rounded.vue -->

Group overlap

By default child avatars inside a <b-avatar-group> will overlap by a factor of 0.3 (relative to the size of the avatar). You can control the overlap amount by setting the overlap prop to a value between 0 and 1, where 0 means no overlap and 1 means 100% overlap.

<template>
  <div>
    <b-avatar-group overlap="0.65">
      <b-avatar></b-avatar>
      <b-avatar></b-avatar>
      <b-avatar></b-avatar>
      <b-avatar></b-avatar>
      <b-avatar></b-avatar>
    </b-avatar-group>
  </div>
</template>

<!-- b-avatar-group-overlap.vue -->

Accessibility

Use the aria-label prop to provide an accessible, screen reader friendly, label for your avatar. If you have a badge, it is recommended to add inforation to your aria-label regarding the badge purpose or content (i.g. '3 messages', 'online', etc.).

While the click event is emitted regardless if the button, href, or to props are set, it is highly recommended to use the button prop when the click event should trigger an action (or use the to or href props when changing routes or changing URLs) for accessibility reasons.

Implementation notes

Avatars are based upon <b-badge> and <b-button> components, and as such, rely upon Bootstrap's badge-* and btn-* variant classes, as well as the rounded-* utility classes.

<b-avatar> also requires BootstrapVue's custom CSS for proper styling.