ImageBitmap

An ImageBitmap object stores pixel data rendered on a canvas.

NOTE

The APIs of this module are supported since API version 8. Updates will be marked with a superscript to indicate their earliest API version.

Attributes

Example

// xxx.ets
@Entry
@Component
struct ImageExample {
  private settings: RenderingContextSettings = new RenderingContextSettings(true);
  private context: CanvasRenderingContext2D = new CanvasRenderingContext2D(this.settings);
  private img:ImageBitmap = new ImageBitmap("common/images/example.jpg");

  build() {
    Flex({ direction: FlexDirection.Column, alignItems: ItemAlign.Center, justifyContent: FlexAlign.Center }) {
      Canvas(this.context)
        .width('100%')
        .height('100%')
        .backgroundColor('#ffff00')
        .onReady(() =>{
          this.context.drawImage( this.img,0,0,500,500,0,0,400,200);
      })
    }
    .width('100%')
    .height('100%')
  }
}

Methods

close

close()

Releases all graphics resources associated with this ImageBitmap object. This API is a void API.