HarmonyOS/OpenHarmony应用开发-ArkTS画布组件CanvasRenderingContext2D对象（八）

shadowOffsetY

代码

// xxx.ets@Entry@Componentstruct ShadowOffsetY {  private settings: RenderingContextSettings = new RenderingContextSettings(true)  private context: CanvasRenderingContext2D = new CanvasRenderingContext2D(this.settings)  build() {    Flex({ direction: FlexDirection.Column, alignItems: ItemAlign.Center, justifyContent: FlexAlign.Center }) {      Canvas(this.context) .width('100%') .height('100%') .backgroundColor('#ffff00') .onReady(() =>{   this.context.shadowBlur = 10   this.context.shadowOffsetY = 20   this.context.shadowColor = 'rgb(0,0,0)'   this.context.fillStyle = 'rgb(255,0,0)'   this.context.fillRect(30, 30, 100, 100)      })    }    .width('100%')    .height('100%')  }}

效果

imageSmoothingEnabled

代码

// xxx.ets@Entry@Componentstruct ImageSmoothingEnabled {  private settings: RenderingContextSettings = new RenderingContextSettings(true)  private context: CanvasRenderingContext2D = new CanvasRenderingContext2D(this.settings)  private img:ImageBitmap = new ImageBitmap("common/images/icon.jpg")    build() {    Flex({ direction: FlexDirection.Column, alignItems: ItemAlign.Center, justifyContent: FlexAlign.Center }) {      Canvas(this.context) .width('100%') .height('100%') .backgroundColor('#ffff00') .onReady(() =>{   this.context.imageSmoothingEnabled = false   this.context.drawImage( this.img,0,0,400,200)      })    }    .width('100%')    .height('100%')  }}

 效果