【鸿蒙】可交互热点区域配置-Rectangle

从API version 9开始，该接口支持在ArkTS卡片中使用。

说明

x和y可以设置正负值百分比。当x设置为'100%'时表示热区往右偏移组件本身宽度大小，当x设置为'-100%'时表示热区往左偏移组件本身宽度大小。当y设置为'100%'时表示热区往下偏移组件本身高度大小，当y设置为'-100%'时表示热区往上偏移组件本身高度大小。

width和height只能设置正值百分比。width：'100%'表示热区宽度设置为该组件本身的宽度。比如组件本身宽度是100vp，那么'100%'表示热区宽度也为100vp。height：'100%'表示热区高度设置为该组件本身的高度。

百分比相对于组件自身宽高进行计算

示例：

// xxx.ets
@Entry
@Component
struct TouchTargetExample {
  @State text: string = ""

  build() {
    Column({ space: 20 }) {
      Text("{x:0,y:0,width:'50%',height:'100%'}")
      // 热区宽度为按钮的一半，点击右侧无响应
      Button("button1")
        .responseRegion({ x: 0, y: 0, width: '50%', height: '100%' })
        .onClick(() => {
          this.text = 'button1 clicked'
        })

      // 为一个组件添加多个热区
      Text("[{x:'100%',y:0,width:'50%',height:'100%'}," +
      "\n{ x: 0, y: 0, width: '50%', height: '100%' }]")
      Button("button2")
        .responseRegion([
          { x: '100%', y: 0, width: '50%', height: '100%' }, // 第一个热区宽度为按钮的一半，点击按钮右侧宽度一半区域，点击事件生效
          { x: 0, y: 0, width: '50%', height: '100%' } // 第二个热区宽度为按钮的一半，点击button2左半边，点击事件生效
        ])
        .onClick(() => {
          this.text = 'button2 clicked'
        })
      // 热区大小为整个按钮，且下移一个按钮高度，点击button3下方按钮大小区域，点击事件生效
      Text("{x:0,y:'100%',width:'100%',height:'100%'}")
      Button("button3")
        .responseRegion({ x: 0, y: '100%', width: '100%', height: '100%' })
        .onClick(() => {
          this.text = 'button3 clicked'
        })

      Text(this.text).margin({ top: 50 })
    }.width('100%').margin({ top: 10 })
  }
}

源码结构：

/**
 * Defines the data type of the interface restriction.
 *
 * @interface Rectangle
 * @syscap SystemCapability.ArkUI.ArkUI.Full
 * @since 8
 */
/**
 * Defines the data type of the interface restriction.
 *
 * @interface Rectangle
 * @syscap SystemCapability.ArkUI.ArkUI.Full
 * @since 9
 * @form
 */
/**
 * Defines the data type of the interface restriction.
 *
 * @interface Rectangle
 * @syscap SystemCapability.ArkUI.ArkUI.Full
 * @crossplatform
 * @since 10
 * @form
 */
declare interface Rectangle {
  /**
   * x:Horizontal coordinate
   *
   * @type { ?Length }
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @since 8
   */
  /**
   * x:Horizontal coordinate
   *
   * @type { ?Length }
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @since 9
   * @form
   */
  /**
   * x:Horizontal coordinate
   *
   * @type { ?Length }
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @crossplatform
   * @since 10
   * @form
   */
  x?: Length;

  /**
   * y:Vertical axis coordinate.
   *
   * @type { ?Length }
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @since 8
   */
  /**
   * y:Vertical axis coordinate.
   *
   * @type { ?Length }
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @since 9
   * @form
   */
  /**
   * y:Vertical axis coordinate.
   *
   * @type { ?Length }
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @crossplatform
   * @since 10
   * @form
   */
  y?: Length;

  /**
   * Sets the width of the current touchRect.
   *
   * @type { ?Length }
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @since 8
   */
  /**
   * Sets the width of the current touchRect.
   *
   * @type { ?Length }
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @since 9
   * @form
   */
  /**
   * Sets the width of the current touchRect.
   *
   * @type { ?Length }
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @crossplatform
   * @since 10
   * @form
   */
  width?: Length;

  /**
   * Sets the height of the current touchRect.
   *
   * @type { ?Length }
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @since 8
   */
  /**
   * Sets the height of the current touchRect.
   *
   * @type { ?Length }
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @since 9
   * @form
   */
  /**
   * Sets the height of the current touchRect.
   *
   * @type { ?Length }
   * @syscap SystemCapability.ArkUI.ArkUI.Full
   * @crossplatform
   * @since 10
   * @form
   */
  height?: Length;
}