ts-universal-attributes-background.md 3.8 KB
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# Background

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You can set the background of a component.
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> **NOTE**
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> This attribute is supported since API version 7. Updates will be marked with a superscript to indicate their earliest API version.
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## Required Permissions
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None

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## Attributes


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| Name | Type | Default Value | Description |
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| -------- | -------- | -------- | -------- |
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| backgroundColor | [ResourceColor](../../ui/ts-types.md) | - | Background color of a component. |
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| backgroundImage | src: [ResourceStr](../../ui/ts-types.md),<br/>repeat?: [ImageRepeat](ts-appendix-enums.md#imagerepeat) | - | **src**: image address, which can be the address of an Internet or a local image. (SVG images are not supported.)<br/>**repeat**: whether the background image is repeatedly used. By default, the background image is not repeatedly used. |
| backgroundImageSize | {<br/>width?: Length,<br/>height?: Length<br/>} \| [ImageSize](ts-appendix-enums.md#imagesize) | Auto | Width and height of the background image. When the input is a **{width: Length, height: Length}** object, if only one attribute is set, the other attribute is the set value multiplied by the original aspect ratio of the image. By default, the original image aspect ratio remains unchanged. |
| backgroundImagePosition | {<br/>x?: Length,<br/>y?: Length<br/>} \| [Alignment](ts-appendix-enums.md#alignment) | {<br/>x: 0,<br/>y: 0<br/>} | Position of the background image in the component. |
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## Example

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```ts
// xxx.ets
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@Entry
@Component
struct BackgroundExample {
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  build() {
    Column({ space: 5 }) {
      Text('background color').fontSize(9).width('90%').fontColor(0xCCCCCC)
      Row().width('90%').height(50).backgroundColor(0xE5E5E5).border({ width: 1 })

      Text('background image repeat along X').fontSize(9).width('90%').fontColor(0xCCCCCC)
      Row()
        .backgroundImage('/comment/bg.jpg', ImageRepeat.X)
        .backgroundImageSize({ width: '250px', height: '140px' })
        .width('90%')
        .height(70)
        .border({ width: 1 })

      Text('background image repeat along Y').fontSize(9).width('90%').fontColor(0xCCCCCC)
      Row()
        .backgroundImage('/comment/bg.jpg', ImageRepeat.Y)
        .backgroundImageSize({ width: '500px', height: '120px' })
        .width('90%')
        .height(100)
        .border({ width: 1 })

      Text('background image size').fontSize(9).width('90%').fontColor(0xCCCCCC)
      Row()
        .width('90%').height(150)
        .backgroundImage('/comment/bg.jpg', ImageRepeat.NoRepeat)
        .backgroundImageSize({ width: 1000, height: 500 })
        .border({ width: 1 })

      Text('background fill the box(Cover)').fontSize(9).width('90%').fontColor(0xCCCCCC)
      // Occupy all the space of the container, without ensuring that the image is completely displayed.
      Row()
        .width(200)
        .height(50)
        .backgroundImage('/comment/bg.jpg', ImageRepeat.NoRepeat)
        .backgroundImageSize(ImageSize.Cover)
        .border({ width: 1 })

      Text('background fill the box(Contain)').fontSize(9).width('90%').fontColor(0xCCCCCC)
      // Maximize the image while ensuring that it can be completely displayed.
      Row()
        .width(200)
        .height(50)
        .backgroundImage('/comment/bg.jpg', ImageRepeat.NoRepeat)
        .backgroundImageSize(ImageSize.Contain)
        .border({ width: 1 })

      Text('background image position').fontSize(9).width('90%').fontColor(0xCCCCCC)
      Row()
        .width(100)
        .height(50)
        .backgroundImage('/comment/bg.jpg', ImageRepeat.NoRepeat)
        .backgroundImageSize({ width: 1000, height: 560 })
        .backgroundImagePosition({ x: -500, y: -300 })
        .border({ width: 1 })
    }
    .width('100%').height('100%').padding({ top: 5 })
  }
}
```

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![en-us_image_0000001211898502](figures/en-us_image_0000001211898502.png)