harmony 鸿蒙DataPanel

  • 2025-06-12
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DataPanel

The DataPanel component is used to display proportions in a chart.

NOTE

This component is supported since API version 7. Updates will be marked with a superscript to indicate their earliest API version.

Child Components

Not supported

APIs

DataPanel(options: DataPanelOptions)

Widget capability: This API can be used in ArkTS widgets since API version 9.

Atomic service API: This API can be used in atomic services since API version 11.

System capability: SystemCapability.ArkUI.ArkUI.Full

Parameters

Name Type Mandatory Description
options DataPanelOptions Yes Parameters of the data panel.

DataPanelOptions

Widget capability: This API can be used in ArkTS widgets since API version 9.

Atomic service API: This API can be used in atomic services since API version 11.

System capability: SystemCapability.ArkUI.ArkUI.Full

Name Type Mandatory Description
values number[] Yes Data value list. A maximum of nine values are supported. If more than nine values are set, only the first nine ones are used. A value less than 0 evaluates to the value 0.
max number No - When set to a value greater than 0, this parameter indicates the maximum value in the values list.
- When set to a value equal to or smaller than 0, this parameter indicates the sum of values in the values list. The values are displayed in proportion.
Default value: 100
type8+ DataPanelType No Type of the data panel (dynamic modification is not supported).
Default value: DataPanelType.Circle

DataPanelType8+

Widget capability: This API can be used in ArkTS widgets since API version 9.

Atomic service API: This API can be used in atomic services since API version 11.

System capability: SystemCapability.ArkUI.ArkUI.Full

Name Description
Line Line data panel.
Circle Circle data panel.

Attributes

In addition to the universal attributes, the following attributes are supported.

closeEffect

closeEffect(value: boolean)

Sets whether to disable the rotation and shadow effects for the component. This attribute enables or disables the shadow effect only when trackShadow is not set. The shadow effect enabled through this attribute is in the default style.

Widget capability: This API can be used in ArkTS widgets since API version 9.

Atomic service API: This API can be used in atomic services since API version 11.

System capability: SystemCapability.ArkUI.ArkUI.Full

Parameters

Name Type Mandatory Description
value boolean Yes Whether to disable the rotation and shadow effects for the component.
Default value: false
false: Disable the rotation and shadow effects.true: Enable the rotation and shadow effects.

valueColors10+

valueColors(value: Array)

Sets an array of data segment colors.

Atomic service API: This API can be used in atomic services since API version 11.

System capability: SystemCapability.ArkUI.ArkUI.Full

Parameters

Name Type Mandatory Description
value Array<ResourceColor |LinearGradient> Yes Array of data segment colors. A value of the ResourceColor type indicates a solid color, and A value of the LinearGradient type indicates a color gradient.

trackBackgroundColor10+

trackBackgroundColor(value: ResourceColor)

Sets the background color.

Atomic service API: This API can be used in atomic services since API version 11.

System capability: SystemCapability.ArkUI.ArkUI.Full

Parameters

Name Type Mandatory Description
value ResourceColor Yes Background color.
The value is in hexadecimal ARGB notation. The first two digits indicate opacity.
Default value: ’#08182431’

strokeWidth10+

strokeWidth(value: Length)

Sets the stroke width of the border. This attribute does not take effect when the data panel type is DataPanelType.Line.

Atomic service API: This API can be used in atomic services since API version 11.

System capability: SystemCapability.ArkUI.ArkUI.Full

Parameters

Name Type Mandatory Description
value Length Yes Stroke width of the border.
Default value: 24
Unit: vp
NOTE
If a value less than 0 is set, the default value is used.
If the value exceeds the radius of the ring, the thickness will automatically be adjusted to 12% of the ring’s radius to prevent visual issues. Excessively large values may cause the ring to disappear.

trackShadow10+

trackShadow(value: DataPanelShadowOptions)

Sets the shadow style.

Atomic service API: This API can be used in atomic services since API version 11.

System capability: SystemCapability.ArkUI.ArkUI.Full

Parameters

Name Type Mandatory Description
value DataPanelShadowOptions Yes Shadow style.
NOTE
If this attribute is set to null, the shadow effect is disabled.

contentModifier12+

contentModifier(modifier: ContentModifier<DataPanelConfiguration>)

Creates a content modifier.

Atomic service API: This API can be used in atomic services since API version 12.

System capability: SystemCapability.ArkUI.ArkUI.Full

Parameters

Name Type Mandatory Description
modifier ContentModifier<DataPanelConfiguration> Yes Content modifier to apply to the current component.
modifier: content modifier. You need a custom class to implement the ContentModifier API.

DataPanelShadowOptions10+

Inherits from MultiShadowOptions and has all attributes of MultiShadowOptions.

Atomic service API: This API can be used in atomic services since API version 11.

System capability: SystemCapability.ArkUI.ArkUI.Full

Name Type Mandatory Description
colors Array<ResourceColor |LinearGradient> No Array of shadow colors for data segments.
Default value: same as the value of valueColors
NOTE
If the number of the set shadow colors is less than that of the data segments, the number of the displayed shadow colors is the same as the former.
If the number of the set shadow colors is greater than that of the data segments, the number of the displayed shadow colors is the same as the latter.

LinearGradient10+

constructor

constructor(colorStops: ColorStop[])

Describes the linear gradient.

Atomic service API: This API can be used in atomic services since API version 11.

System capability: SystemCapability.ArkUI.ArkUI.Full

Parameters

Name Type Mandatory Description
colorStops ColorStop[] Yes Gradient colors and color stops.

ColorStop10+

Describes the gradient color stop.

Atomic service API: This API can be used in atomic services since API version 11.

System capability: SystemCapability.ArkUI.ArkUI.Full

Name Type Mandatory Description
color ResourceColor Yes Color value.
offset Length Yes Gradient color stop (proportion value between 0 and 1). A value less than 0 evaluates to the value 0. A value greater than 1 evaluates to the value 1.
NOTE
If the value is a string that represents a number, it will be converted to a number.
For example, ‘10vp’ is converted to 10, and ‘10%’ is converted to 0.1.

DataPanelConfiguration12+

You need a custom class to implement the ContentModifier API.

Atomic service API: This API can be used in atomic services since API version 12.

System capability: SystemCapability.ArkUI.ArkUI.Full

Name Type Mandatory Description
values number[] Yes Current values of the data panel.
Value range: [0, 9]
Values less than 0 are adjusted to 0.
maxValue number Yes Maximum value displayed in the data panel.
Default value: 100
NOTE
If the value is less than or equal to 0, maxValue is set to the sum of all items in the values array and displayed proportionally.

Example

Example 1: Setting Data Panel Types

This example demonstrates how to set different types of data panels using the type attribute.

// xxx.ets
@Entry
@Component
struct DataPanelExample {
  public valueArr: number[] = [10, 10, 10, 10, 10, 10, 10, 10, 10]

  build() {
    Column({ space: 5 }) {
      Row() {
        Stack() {
          // Single-segment circular data panel
          DataPanel({ values: [30], max: 100, type: DataPanelType.Circle }).width(168).height(168)
          Column() {
            Text('30').fontSize(35).fontColor('#182431')
            Text('1.0.0').fontSize(9.33).lineHeight(12.83).fontWeight(500).opacity(0.6)
          }

          Text('%')
            .fontSize(9.33)
            .lineHeight(12.83)
            .fontWeight(500)
            .opacity(0.6)
            .position({ x: 104.42, y: 78.17 })
        }.margin({ right: 44 })

        // Multi-segment circular data panel
        Stack() {
          DataPanel({ values: [50, 12, 8, 5], max: 100, type: DataPanelType.Circle }).width(168).height(168)
          Column() {
            Text('75').fontSize(35).fontColor('#182431')
            Text('Used: 98 GB/128 GB') .fontSize(8.17).lineHeight(11.08).fontWeight(500).opacity(0.6)
          }

          Text('%')
            .fontSize(9.33)
            .lineHeight(12.83)
            .fontWeight(500)
            .opacity(0.6)
            .position({ x: 104.42, y: 78.17 })
        }
      }.margin({ bottom: 59 })

      // Linear data panel
      DataPanel({ values: this.valueArr, max: 100, type: DataPanelType.Line }).width(300).height(20)
    }.width('100%').margin({ top: 5 })
  }
}

dataPanel

Example 2: Setting Gradient Colors and Shadows

This example demonstrates how to set gradient colors and shadows using the valueColors and trackShadow attributes.

// xxx.ets
@Entry
@Component
struct LinearGradientDataPanelExample {
  public values1: number[] = [20, 20, 20, 20]
  public color1: LinearGradient =
    new LinearGradient([{ color: "#65EEC9A3", offset: 0 }, { color: "#FFEF629F", offset: 1 }])
  public color2: LinearGradient =
    new LinearGradient([{ color: "#FF67F9D4", offset: 0 }, { color: "#FFFF9554", offset: 1 }])
  public colorShadow1: LinearGradient =
    new LinearGradient([{ color: "#65EEC9A3", offset: 0 }, { color: "#65EF629F", offset: 1 }])
  public colorShadow2: LinearGradient =
    new LinearGradient([{ color: "#65e26709", offset: 0 }, { color: "#65efbd08", offset: 1 }])
  public colorShadow3: LinearGradient =
    new LinearGradient([{ color: "#6572B513", offset: 0 }, { color: "#6508efa6", offset: 1 }])
  public colorShadow4: LinearGradient =
    new LinearGradient([{ color: "#65ed08f5", offset: 0 }, { color: "#65ef0849", offset: 1 }])
  @State color3: string = '#00FF00'
  @State color4: string = '#20FF0000'
  @State bgColor: string = '#08182431'
  @State offsetX: number = 15
  @State offsetY: number = 15
  @State radius: number = 5
  @State colorArray: Array<LinearGradient|ResourceColor> = [this.color1, this.color2, this.color3, this.color4]
  @State shadowColorArray: Array<LinearGradient|ResourceColor> =
    [this.colorShadow1, this.colorShadow2, this.colorShadow3, this.colorShadow4]

  build() {
    Column({ space: 5 }) {
      Text('LinearGradient')
        .fontSize(9)
        .fontColor(0xCCCCCC)
        .textAlign(TextAlign.Start)
        .width('100%')
        .margin({ top: 20, left: 20 })
      DataPanel({ values: this.values1, max: 100, type: DataPanelType.Circle })
        .width(300)
        .height(300)
        .valueColors(this.colorArray)
        .trackShadow({
          radius: this.radius,
          colors: this.shadowColorArray,
          offsetX: this.offsetX,
          offsetY: this.offsetY
        })
        .strokeWidth(30)
        .trackBackgroundColor(this.bgColor)
    }.width('100%').margin({ top: 5 })
  }
}

LinearGradientDataPanel

Example 3: Disabling Animations and Shadows

This example demonstrates how to disable animations and shadows using the closeEffect attribute.

// xxx.ets
@Entry
@Component
struct LinearGradientDataPanelExample {
  public values1: number[] = [20, 20, 20, 20]
  public color1: LinearGradient =
    new LinearGradient([{ color: "#65EEC9A3", offset: 0 }, { color: "#FFEF629F", offset: 1 }])
  public color2: LinearGradient =
    new LinearGradient([{ color: "#FF67F9D4", offset: 0 }, { color: "#FFFF9554", offset: 1 }])
  public colorShadow1: LinearGradient =
    new LinearGradient([{ color: "#65EEC9A3", offset: 0 }, { color: "#65EF629F", offset: 1 }])
  public colorShadow2: LinearGradient =
    new LinearGradient([{ color: "#65e26709", offset: 0 }, { color: "#65efbd08", offset: 1 }])
  public colorShadow3: LinearGradient =
    new LinearGradient([{ color: "#6572B513", offset: 0 }, { color: "#6508efa6", offset: 1 }])
  public colorShadow4: LinearGradient =
    new LinearGradient([{ color: "#65ed08f5", offset: 0 }, { color: "#65ef0849", offset: 1 }])
  @State color3: string = '#00FF00'
  @State color4: string = '#20FF0000'
  @State bgColor: string = '#08182431'
  @State offsetX: number = 15
  @State offsetY: number = 15
  @State radius: number = 5
  @State colorArray: Array<LinearGradient|ResourceColor> = [this.color1, this.color2, this.color3, this.color4]
  @State shadowColorArray: Array<LinearGradient|ResourceColor> =
    [this.colorShadow1, this.colorShadow2, this.colorShadow3, this.colorShadow4]

  build() {
    Column({ space: 5 }) {
      Text('LinearGradient')
        .fontSize(9)
        .fontColor(0xCCCCCC)
        .textAlign(TextAlign.Start)
        .width('100%')
        .margin({ top: 20, left: 20 })
      DataPanel({ values: this.values1, max: 100, type: DataPanelType.Circle })
        .width(300)
        .height(300)
        .valueColors(this.colorArray)
        .strokeWidth(30)
        .closeEffect(true)
        .trackBackgroundColor(this.bgColor)
    }.width('100%').margin({ top: 5 })
  }
}

DataPanelCloseEffect

Example 4: Setting the Custom Content Area

This example shows how to customize the content area of the data panel using the contentModifier attribute.

// xxx.ets
@Builder
function buildDataPanel(config: DataPanelConfiguration) {
  Column() {
    Column() {
      ForEach(config.values, (item: number, index: number) => {
        ChildItem({ item: item, index: index, max: config.maxValue })
      }, (item: string) => item)
    }.padding(10)

    Column() {
      Line().width("100%").backgroundColor("#ff373737").margin({ bottom: 5 })
    }.padding({ left: 20, right: 20 })

    Row() {
      Text('Length=' + config.values.length + '    ').margin({ left: 10 }).align(Alignment.Start)
      Text('Max=' + config.maxValue).margin({ left: 10 }).align(Alignment.Start)
    }
  }
}

class DataPanelBuilder implements ContentModifier<DataPanelConfiguration> {
  constructor() {
  }

  applyContent(): WrappedBuilder<[DataPanelConfiguration]> {
    return wrapBuilder(buildDataPanel)
  }
}

@Entry
@Component
struct Index {
  build() {
    Column() {
      Text("Data panel").margin({ top: 12 });
      Row() {
        DataPanel({ values: [12.3, 21.1, 13.4, 35.2, 26.0, 32.0], max: 140, type: DataPanelType.Circle })
          .width(400)
          .height(260)
          .constraintSize({ maxWidth: "100%" })
          .padding({ top: 10 })
          .contentModifier(new DataPanelBuilder())
      }.margin(15).backgroundColor("#fff5f5f5")
    }
  }
}

@Component
struct ChildItem {
  @Prop item: number;
  @Prop index: number;
  @Prop max: number;
  public color1: string = "#65ff00dd"
  public color2: string = "#6500ff99"
  public color3: string = "#65ffe600"
  public color4: string = "#6595ff00"
  public color5: string = "#65000dff"
  public color6: string = "#650099ff"
  public colorArray: Array<string> = [this.color1, this.color2, this.color3, this.color4, this.color5, this.color6]

  build() {
    RelativeContainer() {
      Row() {
        Rect()
          .height(25)
          .width(this.item * 600 / this.max)
          .foregroundColor(this.colorArray[this.index])
          .radius(5)
          .align(Alignment.Start)
        Text(" " + this.item)
          .fontSize(17)
      }
    }.height(28)
  }
}

LinearGradientDataPanel

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