Flex布局

@Entry
@Component
struct FlexExample {
  build() {
    Column({ space: 5 }) {
      Text('flexBasis').fontSize(9).fontColor(0xCCCCCC).width('90%')
      // 基于主轴基准尺寸
      // flexBasis()值可以是'auto'(默认值)元素本来的大小 ,如果是数字则类似于.width()/.height() ,基于主轴
      Flex() {
        Text('flexBasis(100)')
          .flexBasis('100').height(100).lineHeight(70)
          .backgroundColor(0xF5DEB3).textAlign(TextAlign.Center)
        Text('flexBasis("auto")')
          .flexBasis('auto').width('60%').height(100).lineHeight(70)
          .backgroundColor(0xD2B48C).textAlign(TextAlign.Center)
      }.width('90%').height(120).padding(10).backgroundColor(0xAFEEEE)

      Text('flexGrow').fontSize(9).fontColor(0xCCCCCC).width('90%')
      // 剩余空间所占比例
      // flexGrow()剩余空间分配给该元素的比例
      Flex() {
        Text('flexGrow(2)')
          .flexGrow(2).height(100).lineHeight(70)
          .backgroundColor(0xF5DEB3).textAlign(TextAlign.Center)
        Text('flexGrow(1)')
          .flexGrow(1).height(100).lineHeight(70)
          .backgroundColor(0xD2B48C).textAlign(TextAlign.Center)
      }.width('90%').height(120).padding(10).backgroundColor(0xAFEEEE)

      Text('flexShrink').fontSize(9).fontColor(0xCCCCCC).width('90%')
      // flexShrink()此属性所在的组件的比例
      // text1比例是0,其他都是默认值1,放不下时直接等比例缩放后两个,第一个不缩放
      Flex({ direction: FlexDirection.Row }) {
        Text('flexShrink(0)')
          .flexShrink(0).width('50%').height(100).lineHeight(70)
          .backgroundColor(0xF5DEB3).textAlign(TextAlign.Center)
        Text('no flexShrink')
          .width('40%').height(100).lineHeight(70).backgroundColor(0xD2B48C).textAlign(TextAlign.Center)
        Text('flexShrink(2)')
          .flexShrink(2).width('40%').height(100) .lineHeight(70)
          .backgroundColor(0xF5DEB3).textAlign(TextAlign.Center)
      }.width('90%').height(120).padding(10).backgroundColor(0xAFEEEE)

      Text('alignSelf').fontSize(9).fontColor(0xCCCCCC).width('90%')
      // alignSelf()覆盖Flex布局容器中alignItems默认配置
      Flex({ direction: FlexDirection.Row, alignItems: ItemAlign.Center }) {
        Text('no alignSelf,height:80').width('33%').height(80)
          .backgroundColor(0xF5DEB3).textAlign(TextAlign.Center)
        Text('alignSelf stretch')
          .alignSelf(ItemAlign.Stretch).width('33%').height(80).lineHeight(70)
          .backgroundColor(0xD2B48C).textAlign(TextAlign.Center)
        Text('no alignSelf,height:100').width('34%').height(100)
          .backgroundColor(0xF5DEB3).textAlign(TextAlign.Center)
      }.width('90%').height(120).padding(10).backgroundColor(0xAFEEEE)
    }.width('100%').margin({ top: 5 })
  }
}