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
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 direction="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
  direction="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
  direction="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 direction="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
  direction="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
  direction="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`	`Intl.NumberFormatOptions`	—	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.

Layout

Name	Type	Default	Description
`flex`	`string \| number \| boolean`	—	When used in a flex layout, specifies how the element will grow or shrink to fit the space available. See MDN.
`flexGrow`	`number`	—	When used in a flex layout, specifies how the element will grow to fit the space available. See MDN.
`flexShrink`	`number`	—	When used in a flex layout, specifies how the element will shrink to fit the space available. See MDN.
`flexBasis`	`number \| string`	—	When used in a flex layout, specifies the initial main size of the element. See MDN.
`alignSelf`	`'auto' \| 'normal' \| 'start' \| 'end' \| 'center' \| 'flex-start' \| 'flex-end' \| 'self-start' \| 'self-end' \| 'stretch'`	—	Overrides the `alignItems` property of a flex or grid container. See MDN.
`justifySelf`	`'auto' \| 'normal' \| 'start' \| 'end' \| 'flex-start' \| 'flex-end' \| 'self-start' \| 'self-end' \| 'center' \| 'left' \| 'right' \| 'stretch'`	—	Specifies how the element is justified inside a flex or grid container. See MDN.
`order`	`number`	—	The layout order for the element within a flex or grid container. See MDN.
`gridArea`	`string`	—	When used in a grid layout, specifies the named grid area that the element should be placed in within the grid. See MDN.
`gridColumn`	`string`	—	When used in a grid layout, specifies the column the element should be placed in within the grid. See MDN.
`gridRow`	`string`	—	When used in a grid layout, specifies the row the element should be placed in within the grid. See MDN.
`gridColumnStart`	`string`	—	When used in a grid layout, specifies the starting column to span within the grid. See MDN.
`gridColumnEnd`	`string`	—	When used in a grid layout, specifies the ending column to span within the grid. See MDN.
`gridRowStart`	`string`	—	When used in a grid layout, specifies the starting row to span within the grid. See MDN.
`gridRowEnd`	`string`	—	When used in a grid layout, specifies the ending row to span within the grid. See MDN.

Spacing

Name	Type	Default	Description
`margin`	`DimensionValue`	—	The margin for all four sides of the element. See MDN.
`marginTop`	`DimensionValue`	—	The margin for the top side of the element. See MDN.
`marginBottom`	`DimensionValue`	—	The margin for the bottom side of the element. See MDN.
`marginStart`	`DimensionValue`	—	The margin for the logical start side of the element, depending on layout direction. See MDN.
`marginEnd`	`DimensionValue`	—	The margin for the logical end side of an element, depending on layout direction. See MDN.
`marginX`	`DimensionValue`	—	The margin for both the left and right sides of the element. See MDN.
`marginY`	`DimensionValue`	—	The margin for both the top and bottom sides of the element. See MDN.

Sizing

Name	Type	Default	Description
`width`	`DimensionValue`	—	The width of the element. See MDN.
`minWidth`	`DimensionValue`	—	The minimum width of the element. See MDN.
`maxWidth`	`DimensionValue`	—	The maximum width of the element. See MDN.
`height`	`DimensionValue`	—	The height of the element. See MDN.
`minHeight`	`DimensionValue`	—	The minimum height of the element. See MDN.
`maxHeight`	`DimensionValue`	—	The maximum height of the element. See MDN.

Positioning

Name	Type	Default	Description
`position`	`'static' \| 'relative' \| 'absolute' \| 'fixed' \| 'sticky'`	—	Specifies how the element is positioned. See MDN.
`top`	`DimensionValue`	—	The top position for the element. See MDN.
`bottom`	`DimensionValue`	—	The bottom position for the element. See MDN.
`left`	`DimensionValue`	—	The left position for the element. See MDN. Consider using `start` instead for RTL support.
`right`	`DimensionValue`	—	The right position for the element. See MDN. Consider using `start` instead for RTL support.
`start`	`DimensionValue`	—	The logical start position for the element, depending on layout direction. See MDN.
`end`	`DimensionValue`	—	The logical end position for the element, depending on layout direction. See MDN.
`zIndex`	`number`	—	The stacking order for the element. See MDN.
`isHidden`	`boolean`	—	Hides the element.

Accessibility

Name	Type	Default	Description
`id`	`string`	—	The element's unique identifier. See MDN.
`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.

Advanced

Name	Type	Default	Description
`UNSAFE_className`	`string`	—	Sets the CSS className for the element. Only use as a last resort. Use style props instead.
`UNSAFE_style`	`CSSProperties`	—	Sets inline style for the element. Only use as a last resort. Use style props instead.

Visual options#

Size#

View guidelines

<Flex direction="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 direction="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
  direction="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 direction="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 direction="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
  direction="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'

See the Styling docs for a visualization of these values.

'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