# DimensionStruct

    struct DimensionStruct

A set of dimensions for a background image.
- `


  ### [width](https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/ContentLauncherTrait/DimensionStruct#/s:15GoogleHomeTypes6MatterO20ContentLauncherTraitV15DimensionStructV5widthSdvp)


  ` The width, using the metric specified by the `https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/ContentLauncherTrait/DimensionStruct.html#/s:15GoogleHomeTypes6MatterO20ContentLauncherTraitV15DimensionStructV6metricAE14MetricTypeEnumOvp` field.

  #### Declaration

  Swift

      let width: Float64

- `


  ### [height](https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/ContentLauncherTrait/DimensionStruct#/s:15GoogleHomeTypes6MatterO20ContentLauncherTraitV15DimensionStructV6heightSdvp)


  ` The height, using the metric specified by the `https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/ContentLauncherTrait/DimensionStruct.html#/s:15GoogleHomeTypes6MatterO20ContentLauncherTraitV15DimensionStructV6metricAE14MetricTypeEnumOvp` field.

  #### Declaration

  Swift

      let height: Float64

- `


  ### [metric](https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/ContentLauncherTrait/DimensionStruct#/s:15GoogleHomeTypes6MatterO20ContentLauncherTraitV15DimensionStructV6metricAE14MetricTypeEnumOvp)


  ` The unit of measurement used for defining the dimensions. If the metric is
  \[MetricTypeEnum.Percentage\]\[ContentLauncherTrait.MetricTypeEnum.Percentage\], the
  dimensions are expressed in terms of a percentage of the overall display dimensions. For
  example, a percentage width measurement of 50.0 against a display width of 1920 pixels
  would mean that the width in pixels is 960, which is 50.0% of 1920.

  #### Declaration

  Swift

      let metric: https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter.html.https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/ContentLauncherTrait.html.https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/ContentLauncherTrait/MetricTypeEnum.html

- `


  ### [init(decoder:)](https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/ContentLauncherTrait/DimensionStruct#/s:15GoogleHomeTypes6MatterO20ContentLauncherTraitV15DimensionStructV7decoderAG0aB3SDK0G7DecoderV_tKcfc)


  ` Creates a new Struct instance using data read from the given `TraitDecoder`.
  Throws
  `HomeError.parseError` when parsing fails.

  #### Declaration

  Swift

      init(decoder: TraitDecoder) throws

  #### Parameters

  |---|---|
  | ` decoder ` | The raw data representing this Struct. |

- `


  ### [encode(with:)](https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/ContentLauncherTrait/DimensionStruct#/s:15GoogleHomeTypes6MatterO20ContentLauncherTraitV15DimensionStructV6encode4withy0aB3SDK0G7EncoderC_tKF)


  ` Writes this Struct to the given `TraitEncoder`.
  Throws `HomeError.parseError` if the data could not be encoded.

  #### Declaration

  Swift

      func encode(with encoder: TraitEncoder) throws

- `


  ### [structField(id:)](https://developers.home.google.com/reference/swift/GoogleHomeTypes/Enums/Matter/ContentLauncherTrait/DimensionStruct#/s:15GoogleHomeTypes6MatterO20ContentLauncherTraitV15DimensionStructV11structField2id0aB3SDK0K0_pSgs6UInt32V_tFZ)


  ` Returns the field corresponding to the given field ID.

  #### Declaration

  Swift

      static func structField(id: UInt32) -> (any Field)?