HarmonyOS鸿蒙Next中ComponentV2支持Canvas吗
HarmonyOS鸿蒙Next中ComponentV2支持Canvas吗?
4 回复
支持ComponentV2
@ObservedV2
class CanvasOperationEntity {
@Trace translateX: number = 0
}
@ComponentV2
export struct Demo {
@Local viewEntity: CanvasOperationEntity = new CanvasOperationEntity()
private mCanvasSetting = new RenderingContextSettings(true)
private mCanvasContext = new CanvasRenderingContext2D(this.mCanvasSetting)
build() {
Column() {
Button('水平移动')
.onClick(() => {
this.viewEntity.translateX += 10
})
Canvas(this.mCanvasContext)
.width(100)
.height(100)
.backgroundColor('#0000ff')
.translate({ x: this.viewEntity.translateX })
.onReady(() => {
const ctx = this.mCanvasContext
ctx.fillStyle = '#ff0000'
ctx.fillRect(0, 0, 100, 100)
})
}
}
}
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在HarmonyOS鸿蒙Next中,ComponentV2支持Canvas。Canvas是用于绘制2D图形的组件,开发者可以通过Canvas API在ComponentV2中进行图形绘制和动画处理。Canvas提供了丰富的绘图功能,包括路径、形状、文本、图像等,适用于各种UI绘制需求。