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New version. Add Material UI implementation with theme customization, about dialog, and news system
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components-wiki/fab.md
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components-wiki/fab.md
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<!-- catalog-only-start --><!-- ---
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name: Floating action button (FAB)
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dirname: fab
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-----><!-- catalog-only-end -->
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<catalog-component-header>
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<catalog-component-header-title slot="title">
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# Floating action buttons (FAB)
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<!-- no-catalog-start -->
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<!--*
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# Document freshness: For more information, see go/fresh-source.
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freshness: { owner: 'lizmitchell' reviewed: '2025-05-20' }
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tag: 'docType:reference'
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*-->
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<!-- go/md-fab -->
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<!-- [TOC] -->
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<!-- external-only-start -->
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**This documentation is fully rendered on the
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[Material Web catalog](https://material-web.dev/components/fab/).**
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<!-- external-only-end -->
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<!-- no-catalog-end -->
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[FAB](https://m3.material.io/components/floating-action-button)<!-- {.external} -->
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represents the most important action on a screen. It puts key actions within
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reach.
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[Extended FABs](https://m3.material.io/components/extended-fab) help people take
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primary actions. They're wider than FABs to accommodate a text label and larger
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target area.
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</catalog-component-header-title>
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<img
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class="hero"
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alt="A phone showing a payment screen with a green filled button that says 'Make
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payment'"
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src="images/fab/hero.webp">
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</catalog-component-header>
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* Design articles
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* [FAB](https://m3.material.io/components/floating-action-button)
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<!-- {.external} -->
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* [Extended FAB](https://m3.material.io/components/extended-fab)
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<!-- {.external} -->
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* API Documentation (*coming soon*)
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* [Source code](https://github.com/material-components/material-web/tree/main/fab)
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<!-- {.external} -->
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<!-- catalog-only-start -->
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<!--
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## Interactive Demo
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||||
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{% playgroundexample dirname=dirname %}
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-->
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<!-- catalog-only-end -->
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||||
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||||
## Types
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||||
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<!-- no-catalog-start -->
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<!-- no-catalog-end -->
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<!-- catalog-include "figures/fab/fabs.html" -->
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1. [FAB](#fab)
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2. [Small FAB](#sizes)
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3. [Large FAB](#sizes)
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### Extended FAB
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<!-- no-catalog-start -->
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<!-- no-catalog-end -->
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<!-- catalog-include "figures/fab/extended-fabs.html" -->
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* [Extended FAB with both icon and label text](#extended)
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* [API Documentation](#api)
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* [Extended FAB without icon](#without-icon)
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## Usage
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FABs should have an icon, such as a font `md-icon`, an `svg`, or an `img`.
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<!-- no-catalog-start -->
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<!-- no-catalog-end -->
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<!-- catalog-include "figures/fab/usage-fab.html" -->
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```html
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<md-fab aria-label="Edit">
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<md-icon slot="icon">edit</md-icon>
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</md-fab>
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```
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### Lowered
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FABs can be set to a lower elevation with the `lowered` attribute.
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<!-- no-catalog-start -->
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<!-- no-catalog-end -->
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<!-- catalog-include "figures/fab/usage-lowered.html" -->
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```html
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<md-fab lowered aria-label="Edit">
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<md-icon slot="icon">edit</md-icon>
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</md-fab>
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```
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## Accessibility
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Icon-only FABs must include an `aria-label` that describes its action. Otherwise
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if `aria-label` is not provided, the FAB will default to announcing its visible
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contents.
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```html
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<md-fab aria-label="Edit">
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<md-icon slot="icon">edit</md-icon>
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</md-fab>
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```
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Extended FABs use their `label` for accessibility. Add an `aria-label` for
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additional context if needed. By supplying the `label` attribute, the extended
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FAB will make sure that the icon is not announced.
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```html
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<md-fab label="Edit" aria-label="Edit Comment">
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<md-icon slot="icon">edit</md-icon>
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</md-fab>
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```
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## FAB
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FABs should display a clear and understandable icon.
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<!-- no-catalog-start -->
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<!-- no-catalog-end -->
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<!-- catalog-include "figures/fab/usage-fab.html" -->
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```html
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<md-fab aria-label="Edit">
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<md-icon slot="icon">edit</md-icon>
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</md-fab>
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```
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### Extended
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FABs may be extended with a label for additional emphasis. Extended FABs can
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omit their icon.
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<!-- no-catalog-start -->
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<!-- no-catalog-end -->
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<!-- catalog-include "figures/fab/usage-extended.html" -->
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```html
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<md-fab label="Edit">
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<md-icon slot="icon">edit</md-icon>
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</md-fab>
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```
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#### Without icon
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Extended FABs are the only FABs that can be used without an icon.
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<!-- no-catalog-start -->
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<!-- no-catalog-end -->
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<!-- catalog-include "figures/fab/usage-without-icon.html" -->
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```html
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<md-fab label="Reroute"></md-fab>
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```
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### Colors
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FAB colors may be changed with the `variant` attribute. It can be set to
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"surface" (default), "primary", "secondary", or "tertiary".
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<!-- no-catalog-start -->
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<!-- no-catalog-end -->
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<!-- catalog-include "figures/fab/usage-color.html" -->
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```html
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<md-fab variant="primary" aria-label="Edit">
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<md-icon slot="icon">edit</md-icon>
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</md-fab>
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<md-fab variant="secondary" aria-label="Edit">
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<md-icon slot="icon">edit</md-icon>
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</md-fab>
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<md-fab variant="tertiary" aria-label="Edit">
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<md-icon slot="icon">edit</md-icon>
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</md-fab>
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```
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### Sizes
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FABs may be small, medium (default), or large by setting the `size` attribute.
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Small FABs can optionally further reduce their touch target.
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<!-- no-catalog-start -->
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<!-- no-catalog-end -->
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<!-- catalog-include "figures/fab/usage-sizes.html" -->
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```html
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<md-fab size="small" touch-target="none" aria-label="Edit">
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<md-icon slot="icon">edit</md-icon>
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</md-fab>
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<md-fab size="small" aria-label="Edit">
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<md-icon slot="icon">edit</md-icon>
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</md-fab>
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<md-fab aria-label="Edit">
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<md-icon slot="icon">edit</md-icon>
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</md-fab>
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<md-fab size="large" aria-label="Edit">
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||||
<md-icon slot="icon">edit</md-icon>
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</md-fab>
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```
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## Branded FAB
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<!-- no-catalog-start -->
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<!-- go/md-branded-fab -->
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<!-- no-catalog-end -->
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Branded FABs use a brightly colored logo for their icon. Unlike [FAB](#fab),
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branded FABs do not have color variants.
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<!-- no-catalog-start -->
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<!-- no-catalog-end -->
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<!-- catalog-include "figures/fab/usage-branded.html" -->
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```html
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<md-branded-fab size="small" aria-label="Add">
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<svg slot="icon" viewBox="0 0 36 36">
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<path fill="#34A853" d="M16 16v14h4V20z"></path>
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<path fill="#4285F4" d="M30 16H20l-4 4h14z"></path>
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<path fill="#FBBC05" d="M6 16v4h10l4-4z"></path>
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<path fill="#EA4335" d="M20 16V6h-4v14z"></path>
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<path fill="none" d="M0 0h36v36H0z"></path>
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</svg>
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</md-branded-fab>
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```
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### Extended
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||||
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||||
Branded FABs may be extended with a label for additional emphasis. Unlike
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[FAB](#fab), branded FABs should always display their logo icon.
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<!-- no-catalog-start -->
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<!-- no-catalog-end -->
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||||
<!-- catalog-include "figures/fab/usage-branded-extended.html" -->
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```html
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<md-branded-fab label="Add">
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||||
<svg slot="icon" viewBox="0 0 36 36">
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||||
<path fill="#34A853" d="M16 16v14h4V20z"></path>
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||||
<path fill="#4285F4" d="M30 16H20l-4 4h14z"></path>
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<path fill="#FBBC05" d="M6 16v4h10l4-4z"></path>
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<path fill="#EA4335" d="M20 16V6h-4v14z"></path>
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<path fill="none" d="M0 0h36v36H0z"></path>
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||||
</svg>
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||||
</md-branded-fab>
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```
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### Sizes
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||||
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Branded FABs may be medium (default) or large by setting the `size` attribute.
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||||
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<!-- no-catalog-start -->
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<!-- no-catalog-end -->
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<!-- catalog-include "figures/fab/usage-branded-sizes.html" -->
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```html
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<md-branded-fab aria-label="Add">
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<svg slot="icon" viewBox="0 0 36 36">
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<path fill="#34A853" d="M16 16v14h4V20z"></path>
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<path fill="#4285F4" d="M30 16H20l-4 4h14z"></path>
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<path fill="#FBBC05" d="M6 16v4h10l4-4z"></path>
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<path fill="#EA4335" d="M20 16V6h-4v14z"></path>
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<path fill="none" d="M0 0h36v36H0z"></path>
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</svg>
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</md-branded-fab>
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<md-branded-fab size="large" aria-label="Add">
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||||
<svg slot="icon" viewBox="0 0 36 36">
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<path fill="#34A853" d="M16 16v14h4V20z"></path>
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||||
<path fill="#4285F4" d="M30 16H20l-4 4h14z"></path>
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||||
<path fill="#FBBC05" d="M6 16v4h10l4-4z"></path>
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||||
<path fill="#EA4335" d="M20 16V6h-4v14z"></path>
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||||
<path fill="none" d="M0 0h36v36H0z"></path>
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||||
</svg>
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||||
</md-branded-fab>
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||||
```
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## Theming
|
||||
|
||||
FAB supports [Material theming](../theming/README.md) and can be customized in
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terms of color, typography, and shape.
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### FAB tokens
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Token | Default value
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---------------------------------- | ---------------------------------------
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`--md-fab-container-color` | `--md-sys-color-surface-container-high`
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`--md-fab-lowered-container-color` | `--md-sys-color-surface-container-low`
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`--md-fab-container-shape` | `--md-sys-shape-corner-large`
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`--md-fab-icon-color` | `--md-sys-color-primary`
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`--md-fab-icon-size` | `24px`
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* [All tokens](https://github.com/material-components/material-web/blob/main/tokens/_md-comp-fab.scss)
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<!-- {.external} -->
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||||
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### FAB example
|
||||
|
||||
<!-- no-catalog-start -->
|
||||
|
||||
|
||||
|
||||
<!-- no-catalog-end -->
|
||||
<!-- catalog-include "figures/fab/theming-fab.html" -->
|
||||
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```html
|
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<style>
|
||||
:root {
|
||||
--md-sys-color-surface-container-high: #e3e9e9;
|
||||
--md-sys-color-primary: #006a6a;
|
||||
--md-fab-container-shape: 0px;
|
||||
--md-fab-icon-size: 36px;
|
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background-color: #f4fbfa;
|
||||
}
|
||||
</style>
|
||||
<md-fab aria-label="Edit">
|
||||
<md-icon slot="icon">edit</md-icon>
|
||||
</md-fab>
|
||||
```
|
||||
|
||||
#### Sizes tokens
|
||||
|
||||
Token | Default value
|
||||
-------------------------------- | -------------
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||||
`--md-fab-small-container-shape` | `--md-sys-shape-corner-medium`
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||||
`--md-fab-small-icon-size` | `24px`
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||||
`--md-fab-large-container-shape` | `--md-sys-shape-corner-extra-large`
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||||
`--md-fab-large-icon-size` | `36px`
|
||||
|
||||
#### Extended FAB tokens
|
||||
|
||||
Token | Default value
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||||
-------------------------- | -------------------------------------
|
||||
`--md-fab-label-text-font` | `--md-sys-typescale-label-large-font`
|
||||
|
||||
#### Extended FAB example
|
||||
|
||||
<!-- no-catalog-start -->
|
||||
|
||||
|
||||
|
||||
<!-- no-catalog-end -->
|
||||
<!-- catalog-include "figures/fab/theming-extended.html" -->
|
||||
|
||||
```html
|
||||
<style>
|
||||
:root {
|
||||
--md-sys-color-surface-container-high: #e3e9e9;
|
||||
--md-sys-color-on-surface: #161d1d;
|
||||
--md-sys-color-primary: #006a6a;
|
||||
--md-fab-container-shape: 0px;
|
||||
--md-fab-icon-size: 36px;
|
||||
background-color: #f4fbfa;
|
||||
}
|
||||
</style>
|
||||
<md-fab label="Edit">
|
||||
<md-icon slot="icon">edit</md-icon>
|
||||
</md-fab>
|
||||
```
|
||||
|
||||
### Branded FAB tokens
|
||||
|
||||
Token | Default value
|
||||
---------------------------------- | ---------------------------------------
|
||||
`--md-fab-branded-container-color` | `--md-sys-color-surface-container-high`
|
||||
`--md-fab-branded-container-shape` | `--md-sys-shape-corner-large`
|
||||
`--md-fab-branded-icon-size` | `36px`
|
||||
`--md-fab-branded-label-text-font` | `--md-sys-typescale-label-large-font`
|
||||
|
||||
* [All tokens](https://github.com/material-components/material-web/blob/main/tokens/_md-comp-fab-branded.scss)
|
||||
<!-- {.external} -->
|
||||
|
||||
### Branded FAB example
|
||||
|
||||
<!-- no-catalog-start -->
|
||||
|
||||
|
||||
|
||||
<!-- no-catalog-end -->
|
||||
<!-- catalog-include "figures/fab/theming-branded.html" -->
|
||||
|
||||
```html
|
||||
<style>
|
||||
:root {
|
||||
--md-sys-color-surface-container-high: #e3e9e9;
|
||||
--md-sys-color-on-surface: #161d1d;
|
||||
--md-fab-branded-icon-size: 48px;
|
||||
--md-fab-branded-container-shape: 0px;
|
||||
background-color: #f4fbfa;
|
||||
}
|
||||
</style>
|
||||
<md-branded-fab size="small" aria-label="Add">
|
||||
<svg slot="icon" viewBox="0 0 36 36">
|
||||
<path fill="#34A853" d="M16 16v14h4V20z"></path>
|
||||
<path fill="#4285F4" d="M30 16H20l-4 4h14z"></path>
|
||||
<path fill="#FBBC05" d="M6 16v4h10l4-4z"></path>
|
||||
<path fill="#EA4335" d="M20 16V6h-4v14z"></path>
|
||||
<path fill="none" d="M0 0h36v36H0z"></path>
|
||||
</svg>
|
||||
</md-branded-fab>
|
||||
<md-branded-fab size="small" label="Add">
|
||||
<svg slot="icon" viewBox="0 0 36 36">
|
||||
<path fill="#34A853" d="M16 16v14h4V20z"></path>
|
||||
<path fill="#4285F4" d="M30 16H20l-4 4h14z"></path>
|
||||
<path fill="#FBBC05" d="M6 16v4h10l4-4z"></path>
|
||||
<path fill="#EA4335" d="M20 16V6h-4v14z"></path>
|
||||
<path fill="none" d="M0 0h36v36H0z"></path>
|
||||
</svg>
|
||||
</md-branded-fab>
|
||||
```
|
||||
|
||||
<!-- auto-generated API docs start -->
|
||||
|
||||
## API
|
||||
|
||||
|
||||
### MdFab <code><md-fab></code>
|
||||
|
||||
#### Properties
|
||||
|
||||
<!-- mdformat off(autogenerated might break rendering in catalog) -->
|
||||
|
||||
| Property | Attribute | Type | Default | Description |
|
||||
| --- | --- | --- | --- | --- |
|
||||
| `variant` | `variant` | `string` | `'surface'` | The FAB color variant to render. |
|
||||
| `size` | `size` | `string` | `'medium'` | The size of the FAB.<br>NOTE: Branded FABs cannot be sized to `small`, and Extended FABs do not have different sizes. |
|
||||
| `label` | `label` | `string` | `''` | The text to display on the FAB. |
|
||||
| `lowered` | `lowered` | `boolean` | `false` | Lowers the FAB's elevation. |
|
||||
|
||||
<!-- mdformat on(autogenerated might break rendering in catalog) -->
|
||||
|
||||
### MdBrandedFab <code><md-branded-fab></code>
|
||||
|
||||
#### Properties
|
||||
|
||||
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|
||||
|
||||
| Property | Attribute | Type | Default | Description |
|
||||
| --- | --- | --- | --- | --- |
|
||||
| `variant` | `variant` | `string` | `'surface'` | The FAB color variant to render. |
|
||||
| `size` | `size` | `string` | `'medium'` | The size of the FAB.<br>NOTE: Branded FABs cannot be sized to `small`, and Extended FABs do not have different sizes. |
|
||||
| `label` | `label` | `string` | `''` | The text to display on the FAB. |
|
||||
| `lowered` | `lowered` | `boolean` | `false` | Lowers the FAB's elevation. |
|
||||
|
||||
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|
||||
|
||||
#### Methods
|
||||
|
||||
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|
||||
|
||||
| Method | Parameters | Returns | Description |
|
||||
| --- | --- | --- | --- |
|
||||
| `getRenderClasses` | _None_ | `{ primary: boolean; secondary: boolean; tertiary: boolean; small: boolean; lowered: boolean; large: boolean; extended: boolean; }` | |
|
||||
|
||||
<!-- mdformat on(autogenerated might break rendering in catalog) -->
|
||||
|
||||
<!-- auto-generated API docs end -->
|
||||
Loading…
Add table
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Reference in a new issue