EveryLike/pages/CSS/overflow/overflow-visible-event.uvue

<template>
  <!-- #ifdef APP -->
  <scroll-view id="scroll-view" style="flex: 1;">
  <!-- #endif -->
    <view>
      <text style="font-size: 15px;">overflow=visible 父view（绿色），子view（红色），点击超出父view区域的部分也可触发事件。</text>
      <view class="backgroundview">
        <view id="parent" class="box-visible-border-radius">
          <view id="child" style="width: 50px; height: 150px; background-color: red;" @click="handleClickOverflowPart"
            @touchmove="handleTouchMoveOverflowPart" @touchstart="handleTouchStartOverflowPart"
            @touchend="handleTouchEndOverflowPart">
          </view>
        </view>
      </view>
      <text style="font-size: 15px;">overflow=visible组件的子view （绿色）被position:
        absolute的view（红色）遮挡时，点击事件测试。</text>
      <view style="width: 300px;height: 300px;background-color: white;">
        <view style="overflow:visible;height: 100px;width: 100%;">
          <view style="background-color: green;height: 100px;width: 100%;" @click="handleClick('green')">
          </view>
        </view>
        <view id="absolute-view" style="position: absolute;background-color: red;width: 100px;height: 200px;right: 0px;"
          @click="handleClick('red')">
        </view>
      </view>
      <text style="font-size: 15px;">overflow=visible组件设置hover-class的测试</text>
      <view class="backgroundview">
        <view class="box-visible-border-radius" hover-class="hover-class">
          <view style="background-color: red;height: 100px;width: 100px;margin-left: 20px;margin-top: 20px;">
          </view>
        </view>
      </view>
      <text style="font-size: 15px;">overflow=visible组件多层级设置测试</text>
      <view class="backgroundview">
        <view id="deep-overflow" style="overflow: visible;">
          <view style="overflow: visible;background-color: red;width: 100px;height: 100px;" @click="handleClick('red')">
          </view>
        </view>
        <view style="overflow: visible;">
          <view style="overflow: visible;background-color: green;width: 100px;height: 100px;">
          </view>
        </view>
      </view>
    </view>
  <!-- #ifdef APP -->
  </scroll-view>
  <!-- #endif -->
</template>

<script>
  export default {
    data() {
      return {
        jest_result: false,
        jest_click_x: -1,
        jest_click_y: -1,
        jest_parent_top: -1.0,
        startX: 0,
        startY: 0,
        moveX: 0,
        moveY: 0,
        oldX: 0,
        oldY: 0,
        moveEl: null as UniElement | null
      }
    },
    onReady() {
      this.moveEl = uni.getElementById('parent')
    },
    methods: {
      handleClickOverflowPart() {
        console.log("click");
        this.jest_result = true;
        uni.showToast({ "title": "点击红色区域" })
      },
      handleTouchStartOverflowPart(e : UniTouchEvent) {
        this.startX = e.changedTouches[0].clientX
        this.startY = e.changedTouches[0].clientY
      },
      handleTouchMoveOverflowPart(e : UniTouchEvent) {
        console.log("touchmove:" + e.touches[0].clientX + "," + e.touches[0].clientY);
        e.preventDefault()
        e.stopPropagation()
        const difX = e.changedTouches[0].clientX
        const difY = e.changedTouches[0].clientY
        this.moveX = difX - this.startX + this.oldX
        this.moveY = difY - this.startY + this.oldY
        this.moveEl?.style?.setProperty('transform', `translate(${this.moveX}px,${this.moveY}px)`)
      },
      handleTouchEndOverflowPart(_ : UniTouchEvent) {
        this.oldX = this.moveX
        this.oldY = this.moveY
      },
      handleClick(str : string) {
        console.log(`点击了 ${str} view`);
        if (str == 'red') {
          this.jest_result = true;
        }
      },
      async jest_getRect() {
        const rect = await uni.getElementById('child')!.getBoundingClientRectAsync()!
        let ratio = 1
        if (uni.getSystemInfoSync().platform == 'android'){
          ratio = uni.getSystemInfoSync().devicePixelRatio
        }
        this.jest_click_x = rect.x * ratio + 30
        this.jest_click_y = rect.bottom * ratio - 30
      },
      jest_getParentRect() {
        const transform = uni.getElementById('parent')?.style.getPropertyValue("transform")
        if (transform != null) {
          let value = transform as string
          value = value.split(",")[1].slice(0, -3)
          let ratio = 1
          if (uni.getSystemInfoSync().platform == 'android'){
            ratio = uni.getSystemInfoSync().devicePixelRatio
          }
          this.jest_parent_top = Math.round((parseFloat(value) * ratio))
        }
      },
      async jest_getAbsoluteViewRect() {
        const rect = await uni.getElementById('absolute-view')!.getBoundingClientRectAsync()!
        const systemInfo = uni.getSystemInfoSync()
        const titleBarHeight = systemInfo.screenHeight - systemInfo.windowHeight
        let ratio = 1
        if (uni.getSystemInfoSync().platform == 'android'){
          ratio = uni.getSystemInfoSync().devicePixelRatio
        }
        this.jest_click_x = rect.x * ratio + 30
        this.jest_click_y = (rect.top + titleBarHeight) * ratio + 30
      },
      async jest_scrollToDeepOverflow() {
        const scrollView = uni.getElementById('scroll-view') as UniScrollViewElement
        const rect = await uni.getElementById('deep-overflow')!.getBoundingClientRectAsync()!
        scrollView.scrollTo(0, rect.top)
        setTimeout(() => {
          const systemInfo = uni.getSystemInfoSync()
          let ratio = 1
          if (uni.getSystemInfoSync().platform == 'android'){
            ratio = uni.getSystemInfoSync().devicePixelRatio
          }
          const titleBarHeight = systemInfo.screenHeight - systemInfo.windowHeight
          uni.getElementById('deep-overflow')!.getBoundingClientRectAsync()!.then((afterRect: DOMRect) => {
            this.jest_click_x = afterRect.x * ratio + 30
            this.jest_click_y = (afterRect.top + titleBarHeight) * ratio + 30
          })
        }, 200)
      }
    }
  }
</script>

<style>
  .backgroundview {
    width: 300px;
    height: 300px;
    margin-bottom: 20px;
    background-color: white;
    justify-content: center;
    align-items: center;
  }

  .box-visible-border-radius {
    width: 100px;
    height: 100px;
    border-radius: 20px;
    overflow: visible;
    background-color: green;
  }

  .hover-class {
    background-color: aqua;
  }
</style>