@spectrum-web-components/circle-loader
v0.5.0
Published
An `<sp-circle-loader>` shows the progression of a system operation such as downloading, uploading, processing, etc. in a visual way. It can represent determinate or indeterminate progress.
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Description
An <sp-circle-loader>
shows the progression of a system operation such as downloading, uploading, processing, etc. in a visual way. It can represent determinate or indeterminate progress.
Usage
yarn add @spectrum-web-components/circle-loader
Import the side effectful registration of <sp-circle-loader>
via:
import '@spectrum-web-components/circle-loader/sp-circle-loader.js';
When looking to leverage the CircleLoader
base class as a type and/or for extension purposes, do so via:
import { CircleLoader } from '@spectrum-web-components/circle-loader';
Variants
Default
An <sp-circle-loader>
is used to visually show the progression of a system operation such as downloading, uploading, processing, etc.
<div
style="width: 250px; height: 150px; display: flex; align-items: center; justify-content: space-around;"
>
<sp-circle-loader progress="71" size="small"></sp-circle-loader>
<sp-circle-loader progress="22"></sp-circle-loader>
<sp-circle-loader progress="86" size="large"></sp-circle-loader>
</div>
Over background
When a loader needs to be placed on top of a colored background, use the over background loader as signified by [over-background]
. This loader uses a white opaque color no matter the background. Make sure the background offers enough contrast for the loader to be legible.
<div
style="width: 250px; height: 150px; display: flex; align-items: center; justify-content: space-around; background-color: rgba(0,0,0,0.4);"
>
<sp-circle-loader
progress="42"
over-background
size="small"
></sp-circle-loader>
<sp-circle-loader progress="7" over-background></sp-circle-loader>
<sp-circle-loader
progress="68"
over-background
size="large"
></sp-circle-loader>
</div>
Indeterminate
A circle loader can be either determinate or indeterminate as signified by [indeterminate]
. By default, loaders are determinate. Use a determinate loader when progress can be calculated against a specific goal (e.g., downloading a file of a known size). Use an indeterminate loader when progress is happening but the time or effort to completion can’t be determined (e.g., attempting to reconnect to a server).
<div
style="width: 250px; height: 150px; display: flex; align-items: center; justify-content: space-around;"
>
<sp-circle-loader indeterminate size="small"></sp-circle-loader>
<sp-circle-loader indeterminate></sp-circle-loader>
<sp-circle-loader indeterminate size="large"></sp-circle-loader>
</div>
Size
Circle loaders come in 3 sizes: small ([size="small"]
), medium (default), or large ([size="large"]
). These are available to fit various contexts. For example, the small loader can be used in place of an icon or in tight spaces, while the large one can be used for full-page loading.