Meter

Meters are visual representations of a quantity or an achievement. Their progress is determined by user actions, rather than system actions.

install	`yarn add @react-spectrum/meter`
version	3.0.0-rc.2
usage	`import {Meter} from '@react-spectrum/meter'`

View guidelines

Spectrum

Example#

<Meter label="Storage space" variant="positive" value={35} />

<Meter
  label="Storage space"
  variant="positive"
  value={35}
/>

<Meter
  label="Storage space"
  variant="positive"
  value={35}
/>

Value#

Meters are controlled with the value prop. In this default case, the value props can be thought of as representing current percentage of progress as the minimum and maximum values default to 0 and 100, respectively.

<Meter
  label="Storage space"
  value={25}
  variant="positive" />

<Meter
  label="Storage space"
  value={25}
  variant="positive" />

<Meter
  label="Storage space"
  value={25}
  variant="positive" />

Alternatively, a different scale can be used by setting the minValue and maxValue.

<Meter
  label="Widgets Used"
  minValue={50}
  maxValue={150}
  value={100}
  variant="positive" />

<Meter
  label="Widgets Used"
  minValue={50}
  maxValue={150}
  value={100}
  variant="positive" />

<Meter
  label="Widgets Used"
  minValue={50}
  maxValue={150}
  value={100}
  variant="positive" />

Values are formatted as a percentage by default, but can be modified by using the formatOptions for different formats. formatOptions is compatible with the option parameter of Intl.NumberFormat and is applied to the current locale.

<Meter
  label="Currency"
  formatOptions={{style: 'currency', currency: 'JPY'}}
  value={60}
  variant="positive" />

<Meter
  label="Currency"
  formatOptions={{style: 'currency', currency: 'JPY'}}
  value={60}
  variant="positive" />

<Meter
  label="Currency"
  formatOptions={{
    style: 'currency',
    currency: 'JPY'
  }}
  value={60}
  variant="positive"
/>

Accessibility#

Depending on the visualization being used (i.e. depending on the showValueLabel prop), a label, aria-label, or aria-labelledby attribute are required.

Internationalization#

To internationalize a Meter, a localized string should be passed to the label prop, aria-label prop, or value of the associated aria-labelledby element.

For languages that are read right-to-left (e.g. Hebrew and Arabic), the layout of the bar loader is automatically flipped.

If the prop formatOptions is used, Meter will utilize current locale to format the value string.

Labeling#

Value labels are shown by default on top, but they can also be moved to the side or hidden as needed. The label should be in sentence case.

<Flex flexDirection="column" maxWidth="size-3000" gap="size-300">
  <Meter label="Label" value={25} variant="warning" />
  <Meter label="Label" labelPosition="side" value={25} variant="warning" />
  <Meter label="Label" showValueLabel={false} value={25} variant="warning" />
</Flex>

<Flex
  flexDirection="column"
  maxWidth="size-3000"
  gap="size-300">
  <Meter label="Label" value={25} variant="warning" />
  <Meter
    label="Label"
    labelPosition="side"
    value={25}
    variant="warning"
  />
  <Meter
    label="Label"
    showValueLabel={false}
    value={25}
    variant="warning"
  />
</Flex>

<Flex
  flexDirection="column"
  maxWidth="size-3000"
  gap="size-300">
  <Meter
    label="Label"
    value={25}
    variant="warning"
  />
  <Meter
    label="Label"
    labelPosition="side"
    value={25}
    variant="warning"
  />
  <Meter
    label="Label"
    showValueLabel={
      false
    }
    value={25}
    variant="warning"
  />
</Flex>

The value label can be updated via the valueLabel prop in cases where showing a different scale makes sense.

<Meter
  label="Progress"
  marginBottom="size-300"
  value={25}
  valueLabel="1 of 4"
  variant="warning"
/>

<Meter
  label="Progress"
  marginBottom="size-300"
  value={25}
  valueLabel="1 of 4"
  variant="warning"
/>

<Meter
  label="Progress"
  marginBottom="size-300"
  value={25}
  valueLabel="1 of 4"
  variant="warning"
/>

Value labels by default show the percentage of progress in a determinate ProgressBar. These can be customized using the following props.

showValueLabel: Hides the value label
formatOptions: Allows you to customize the format of the percentage
valueLabel: Allows you to customize the value label to any string.

<Flex flexDirection="column" maxWidth="size-3000" gap="size-300">
  <Meter
    label="Space used"
    showValueLabel={false}
    value={90}
    variant="critical" />

  <Meter
    label="Space used"
    valueLabel="54 of 60GB"
    value={90} variant="critical" />

  <Meter
    label="Space used"
    formatOptions={{style: 'percent', minimumFractionDigits: 2}}
    value={89.123}
    variant="critical" />
</Flex>

<Flex
  flexDirection="column"
  maxWidth="size-3000"
  gap="size-300">
  <Meter
    label="Space used"
    showValueLabel={false}
    value={90}
    variant="critical"
  />
   <Meter
    label="Space used"
    valueLabel="54 of 60GB"
    value={90}
    variant="critical"
  />
   <Meter
    label="Space used"
    formatOptions={{
      style: 'percent',
      minimumFractionDigits: 2
    }}
    value={89.123}
    variant="critical"
  />
</Flex>

<Flex
  flexDirection="column"
  maxWidth="size-3000"
  gap="size-300">
  <Meter
    label="Space used"
    showValueLabel={
      false
    }
    value={90}
    variant="critical"
  />
  <Meter
    label="Space used"
    valueLabel="54 of 60GB"
    value={90}
    variant="critical"
  />
  <Meter
    label="Space used"
    formatOptions={{
      style: 'percent',
      minimumFractionDigits: 2
    }}
    value={89.123}
    variant="critical"
  />
</Flex>

Props#

Name	Type	Default	Description
`variant`	`'positive' \| 'warning' \| 'critical'`	—	The visual style of the Meter.
`size`	`'S' \| 'L'`	`"L"`	How thick the ProgressBar should be.
`labelPosition`	`LabelPosition`	`"top"`	The label's overall position relative to the element it is labeling.
`label`	`ReactNode`	—	The content to display as the label.
`showValueLabel`	`boolean`	—	Whether the value's label is displayed
`formatOptions`		—	The display format of the value label.
`valueLabel`	`ReactNode`	—	The content to display as the value's label.
`value`	`number`	`0`	The current value (controlled).
`minValue`	`number`	`0`	The smallest value allowed for the input.
`maxValue`	`number`	`100`	The largest value allowed for the input.
`UNSAFE_className`	`string`	—
`UNSAFE_style`	`CSSProperties`	—

Layout

Name	Type	Default	Description
`flex`	`string \| number \| boolean`	—
`flexGrow`	`number`	—
`flexShrink`	`number`	—
`flexBasis`	`number \| string`	—
`alignSelf`	`'auto' \| 'normal' \| 'start' \| 'end' \| 'flex-start' \| 'flex-end' \| 'self-start' \| 'self-end' \| 'center' \| 'stretch'`	—
`justifySelf`	`'auto' \| 'normal' \| 'start' \| 'end' \| 'flex-start' \| 'flex-end' \| 'self-start' \| 'self-end' \| 'center' \| 'left' \| 'right' \| 'stretch'`	—
`flexOrder`	`number`	—
`gridArea`	`string`	—
`gridColumn`	`string`	—
`gridRow`	`string`	—
`gridColumnStart`	`string`	—
`gridColumnEnd`	`string`	—
`gridRowStart`	`string`	—
`gridRowEnd`	`string`	—

Spacing

Name	Type	Default	Description
`margin`	`DimensionValue`	—
`marginTop`	`DimensionValue`	—
`marginLeft`	`DimensionValue`	—
`marginRight`	`DimensionValue`	—
`marginBottom`	`DimensionValue`	—
`marginStart`	`DimensionValue`	—
`marginEnd`	`DimensionValue`	—
`marginX`	`DimensionValue`	—
`marginY`	`DimensionValue`	—

Sizing

Name	Type	Default	Description
`width`	`DimensionValue`	—
`minWidth`	`DimensionValue`	—
`maxWidth`	`DimensionValue`	—
`height`	`DimensionValue`	—
`minHeight`	`DimensionValue`	—
`maxHeight`	`DimensionValue`	—

Positioning

Name	Type	Default	Description
`position`	`'static' \| 'relative' \| 'absolute' \| 'fixed' \| 'sticky'`	—
`top`	`DimensionValue`	—
`bottom`	`DimensionValue`	—
`left`	`DimensionValue`	—
`right`	`DimensionValue`	—
`start`	`DimensionValue`	—
`end`	`DimensionValue`	—
`zIndex`	`number`	—
`isHidden`	`boolean`	—

Accessibility

Name	Type	Default	Description
`id`	`string`	—
`aria-label`	`string`	—	Defines a string value that labels the current element.
`aria-labelledby`	`string`	—	Identifies the element (or elements) that labels the current element.
`aria-describedby`	`string`	—	Identifies the element (or elements) that describes the object.
`aria-details`	`string`	—	Identifies the element (or elements) that provide a detailed, extended description for the object.

Visual Options#

Size#

View guidelines

<Flex flexDirection="column" gap="size-300">
  <Meter label="Space used" size="S" value={90} variant="critical" />
  <Meter label="Space used" size="L" value={90} variant="critical" />
</Flex>

<Flex flexDirection="column" gap="size-300">
  <Meter
    label="Space used"
    size="S"
    value={90}
    variant="critical"
  />
  <Meter
    label="Space used"
    size="L"
    value={90}
    variant="critical"
  />
</Flex>

<Flex
  flexDirection="column"
  gap="size-300">
  <Meter
    label="Space used"
    size="S"
    value={90}
    variant="critical"
  />
  <Meter
    label="Space used"
    size="L"
    value={90}
    variant="critical"
  />
</Flex>

Variants#

View guidelines

<Flex flexDirection="column" gap="size-300">
  <Meter label="Space used" value={25} variant="positive" />
  <Meter label="Space used" value={90} variant="critical" />
  <Meter label="Space used" value={70} variant="warning" />
</Flex>

<Flex flexDirection="column" gap="size-300">
  <Meter label="Space used" value={25} variant="positive" />
  <Meter label="Space used" value={90} variant="critical" />
  <Meter label="Space used" value={70} variant="warning" />
</Flex>

<Flex
  flexDirection="column"
  gap="size-300">
  <Meter
    label="Space used"
    value={25}
    variant="positive"
  />
  <Meter
    label="Space used"
    value={90}
    variant="critical"
  />
  <Meter
    label="Space used"
    value={70}
    variant="warning"
  />
</Flex>

'top' | 'side'

'size-0'
  | 'size-10'
  | 'size-25'
  | 'size-40'
  | 'size-50'
  | 'size-65'
  | 'size-75'
  | 'size-85'
  | 'size-100'
  | 'size-115'
  | 'size-125'
  | 'size-130'
  | 'size-150'
  | 'size-160'
  | 'size-175'
  | 'size-200'
  | 'size-225'
  | 'size-250'
  | 'size-300'
  | 'size-350'
  | 'size-400'
  | 'size-450'
  | 'size-500'
  | 'size-550'
  | 'size-600'
  | 'size-675'
  | 'size-700'
  | 'size-800'
  | 'size-900'
  | 'size-1000'
  | 'size-1200'
  | 'size-1250'
  | 'size-1600'
  | 'size-1700'
  | 'size-2000'
  | 'size-2400'
  | 'size-3000'
  | 'size-3400'
  | 'size-3600'
  | 'size-4600'
  | 'size-5000'
  | 'size-6000'
  | 'static-size-0'
  | 'static-size-10'
  | 'static-size-25'
  | 'static-size-50'
  | 'static-size-40'
  | 'static-size-65'
  | 'static-size-100'
  | 'static-size-115'
  | 'static-size-125'
  | 'static-size-150'
  | 'static-size-175'
  | 'static-size-200'
  | 'static-size-225'
  | 'static-size-250'
  | 'static-size-300'
  | 'static-size-400'
  | 'static-size-450'
  | 'static-size-500'
  | 'static-size-550'
  | 'static-size-600'
  | 'static-size-700'
  | 'static-size-800'
  | 'static-size-900'
  | 'static-size-1000'
  | 'static-size-1200'
  | 'static-size-1700'
  | 'static-size-2400'
  | 'static-size-2600'
  | 'static-size-3400'
  | 'static-size-3600'
  | 'static-size-4600'
  | 'static-size-5000'
  | 'static-size-6000'
  | 'single-line-height'
  | 'single-line-width'
  | string
  | number