Meter

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

installyarn add @adobe/react-spectrum
version3.1.1
usageimport {Meter} from '@adobe/react-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. By default, the value prop represents the 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 props.

<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 this can be modified by using the formatOptions prop to specify a different format. formatOptions is compatible with the option parameter of Intl.NumberFormat and is applied based on 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 prop is 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 meter is automatically flipped. In addition, Meter automatically uses the current locale to format the value label.

Labeling#


Value labels are shown above the Meter by default, but they can also be moved to the side or hidden as needed. The label text 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"
/>

By default, the value label is formatted as a percentage. This can be customized using the following props.

  • showValueLabel: Allows you to display or hide the value label.
  • formatOptions: Allows you to customize the format of the value.
  • 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#


NameTypeDefaultDescription
variant'positive''warning''critical'The visual style of the Meter.
size'S''L''L'How thick the bar should be.
labelPositionLabelPosition'top'The label's overall position relative to the element it is labeling.
labelReactNodeThe content to display as the label.
showValueLabelbooleanWhether the value's label is displayed. True by default if there's a label, false by default if not.
formatOptionsIntl.NumberFormatOptions{style: 'percent'}The display format of the value label.
valueLabelReactNodeThe content to display as the value's label (e.g. 1 of 4).
valuenumber0The current value (controlled).
minValuenumber0The smallest value allowed for the input.
maxValuenumber100The largest value allowed for the input.
Layout
NameTypeDefaultDescription
flexstringnumberbooleanWhen used in a flex layout, specifies how the element will grow or shrink to fit the space available. See MDN.
flexGrownumberWhen used in a flex layout, specifies how the element will grow to fit the space available. See MDN.
flexShrinknumberWhen used in a flex layout, specifies how the element will shrink to fit the space available. See MDN.
flexBasisnumberstringWhen 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.
ordernumberThe layout order for the element within a flex or grid container. See MDN.
gridAreastringWhen used in a grid layout, specifies the named grid area that the element should be placed in within the grid. See MDN.
gridColumnstringWhen used in a grid layout, specifies the column the element should be placed in within the grid. See MDN.
gridRowstringWhen used in a grid layout, specifies the row the element should be placed in within the grid. See MDN.
gridColumnStartstringWhen used in a grid layout, specifies the starting column to span within the grid. See MDN.
gridColumnEndstringWhen used in a grid layout, specifies the ending column to span within the grid. See MDN.
gridRowStartstringWhen used in a grid layout, specifies the starting row to span within the grid. See MDN.
gridRowEndstringWhen used in a grid layout, specifies the ending row to span within the grid. See MDN.
Spacing
NameTypeDefaultDescription
marginDimensionValueThe margin for all four sides of the element. See MDN.
marginTopDimensionValueThe margin for the top side of the element. See MDN.
marginBottomDimensionValueThe margin for the bottom side of the element. See MDN.
marginStartDimensionValueThe margin for the logical start side of the element, depending on layout direction. See MDN.
marginEndDimensionValueThe margin for the logical end side of an element, depending on layout direction. See MDN.
marginXDimensionValueThe margin for both the left and right sides of the element. See MDN.
marginYDimensionValueThe margin for both the top and bottom sides of the element. See MDN.
Sizing
NameTypeDefaultDescription
widthDimensionValueThe width of the element. See MDN.
minWidthDimensionValueThe minimum width of the element. See MDN.
maxWidthDimensionValueThe maximum width of the element. See MDN.
heightDimensionValueThe height of the element. See MDN.
minHeightDimensionValueThe minimum height of the element. See MDN.
maxHeightDimensionValueThe maximum height of the element. See MDN.
Positioning
NameTypeDefaultDescription
position'static''relative''absolute''fixed''sticky'Specifies how the element is positioned. See MDN.
topDimensionValueThe top position for the element. See MDN.
bottomDimensionValueThe bottom position for the element. See MDN.
leftDimensionValueThe left position for the element. See MDN. Consider using start instead for RTL support.
rightDimensionValueThe right position for the element. See MDN. Consider using start instead for RTL support.
startDimensionValueThe logical start position for the element, depending on layout direction. See MDN.
endDimensionValueThe logical end position for the element, depending on layout direction. See MDN.
zIndexnumberThe stacking order for the element. See MDN.
isHiddenbooleanHides the element.
Accessibility
NameTypeDefaultDescription
idstringThe element's unique identifier. See MDN.
aria-labelstringDefines a string value that labels the current element.
aria-labelledbystringIdentifies the element (or elements) that labels the current element.
aria-describedbystringIdentifies the element (or elements) that describes the object.
aria-detailsstringIdentifies the element (or elements) that provide a detailed, extended description for the object.
Advanced
NameTypeDefaultDescription
UNSAFE_classNamestringSets the CSS className for the element. Only use as a last resort. Use style props instead.
UNSAFE_styleCSSPropertiesSets 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>