<template>
  <!-- #ifdef APP -->
  <scroll-view style="flex: 1">
  <!-- #endif -->
    <view>
      <page-intro content="本页演示 pointer-events：通过开关控制父 view、遮罩层、text、image 的 pointer-events（auto/none），观察点击是否穿透或响应；点击可修改 view/text/image 宽度，用于验证事件是否命中目标。"></page-intro>
      <view class="container1">
        <text>控制父视图pointer-events打开时可以点击</text>
        <switch :checked="true" @change="onChange1" />
      </view>
      <view class="container" :style="{ 'pointer-events': pointerEvents1 }">
        <text class="text">点击修改宽度</text>
        <view class="base-style transition-width" id="widthOrHeight" @click="changeWidthOrHeight"></view>
      </view>
      <view class="container1">
        <text>控制遮罩层pointer-events关闭时可以点击</text>
        <switch :checked="true" @change="onChange2" />
      </view>
      <view class="container">
        <text class="text">点击修改宽度(递增)</text>
        <view class="width-progress transition-width" id="widthProgress" @click="changeWidthProgress"></view>
        <view class="mask" :style="{ 'pointer-events': pointerEvents2 }"></view>
      </view>
      <view class="container1">
        <text>控制text组件pointer-events打开时可以点击</text>
        <switch :checked="true" @change="onChange3" />
      </view>
      <view class="container" :style="{ 'pointer-events': pointerEvents3 }">
        <text class="text">点击修改宽度</text>
        <text class="text-pointer transition-width" id="textPointer" @click="changeTextWidth">测试文本</text>
      </view>
      <view class="container1">
        <text>控制image组件pointer-events打开时可以点击</text>
        <switch :checked="true" @change="onChange4" />
      </view>
      <view class="container" :style="{ 'pointer-events': pointerEvents4 }">
        <text class="text">点击修改宽度</text>
        <image class="image-pointer transition-width" id="imagePointer" @click="changeImageWidth" src="/static/test-image/logo.png"></image>
      </view>
    </view>
  <!-- #ifdef APP -->
  </scroll-view>
  <!-- #endif -->
</template>

<script setup lang="uts">

  let isTranstionWidthOrHeight = false
  let widthOrHeight: UniElement | null = null
  let widthProgress: UniElement | null = null
  let textPointer: UniElement | null = null
  let imagePointer: UniElement | null = null
  let progressWidth = 200
  let textWidth = 200
  let imageWidth = 200
  let isTextWidth = false
  let isImageWidth = false
  const pointerEvents1 = ref('auto')
  const pointerEvents2 = ref('auto')
  const pointerEvents3 = ref('auto')
  const pointerEvents4 = ref('auto')

  onReady(() => {
    widthOrHeight = uni.getElementById("widthOrHeight")
    widthProgress = uni.getElementById("widthProgress")
    textPointer = uni.getElementById("textPointer")
    imagePointer = uni.getElementById("imagePointer")
  })

  const changeWidthOrHeight = () => {
    widthOrHeight?.style?.setProperty("width", isTranstionWidthOrHeight
      ? '200px'
      : '300px')
    isTranstionWidthOrHeight = !isTranstionWidthOrHeight
  }

  const changeWidthProgress = () => {
    progressWidth += 20
    widthProgress?.style?.setProperty("width", progressWidth + 'px')
  }

  const onChange1 = (e : UniSwitchChangeEvent) => {
    pointerEvents1.value = e.detail.value ? 'auto' : 'none'
  }

  const onChange2 = (e : UniSwitchChangeEvent) => {
    pointerEvents2.value = e.detail.value ? 'auto' : 'none'
  }

  const changeTextWidth = () => {
    textPointer?.style?.setProperty("width", isTextWidth
      ? '200px'
      : '300px')
    isTextWidth = !isTextWidth
  }

  const changeImageWidth = () => {
    imagePointer?.style?.setProperty("width", isImageWidth
      ? '200px'
      : '300px')
    isImageWidth = !isImageWidth
  }

  const onChange3 = (e : UniSwitchChangeEvent) => {
    pointerEvents3.value = e.detail.value ? 'auto' : 'none'
  }

  const onChange4 = (e : UniSwitchChangeEvent) => {
    pointerEvents4.value = e.detail.value ? 'auto' : 'none'
  }
</script>

<style>
  .container1 {
    margin: 7px 0px 7px 7px;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }

  .container {
    margin: 7px;
    background-color: white;
  }

  .text {
    margin-top: 10px;
    margin-bottom: 16px;
  }

  .base-style {
    width: 200px;
    height: 200px;
    background-color: brown;
  }

  .width-progress {
    width: 200px;
    height: 200px;
    background-color: brown;
  }

  .transition-width {
    transition-property: width;
    transition-duration: 1s;
  }

  .mask {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 200px;
    background-color: rgba(0, 0, 0, 0.5);
  }

  .text-pointer {
    width: 200px;
    height: 200px;
    background-color: brown;
    font-size: 16px;
    color: white;
  }

  .image-pointer {
    width: 200px;
    height: 200px;
    background-color: brown;
  }
</style>