<template>
  <view class="page-body">
    <page-head title="movable-view,可拖动视图"></page-head>
    <view class="uni-padding-wrap uni-common-mt">
      <view class="uni-title uni-common-mt">
        示例 1
        <text>\nmovable-view 区域小于 movable-area</text>
      </view>
      <movable-area>
        <movable-view :x="x" :y="y" direction="all" @change="onChange">text</movable-view>
      </movable-area>
      <view @tap="tap" class="uni-link uni-center uni-common-mt">
        点击这里移动至 (30px, 30px)
      </view>
      <view class="uni-title uni-common-mt">
        示例 2
        <text>\nmovable-view区域大于movable-area</text>
      </view>
      <movable-area>
        <movable-view class="max" direction="all">text</movable-view>
      </movable-area>
      <view class="uni-title uni-common-mt">
        示例 3
        <text>\n只可以横向移动</text>
      </view>
      <movable-area>
        <movable-view direction="horizontal">text</movable-view>
      </movable-area>
      <view class="uni-title uni-common-mt">
        示例 4
        <text>\n只可以纵向移动</text>
      </view>
      <movable-area>
        <movable-view direction="vertical">text</movable-view>
      </movable-area>
      <view class="uni-title uni-common-mt">
        示例 5
        <text>\n可超出边界</text>
      </view>
      <movable-area>
        <movable-view direction="all" out-of-bounds>text</movable-view>
      </movable-area>
      <view class="uni-title uni-common-mt">
        示例 6
        <text>\n带有惯性</text>
      </view>
      <movable-area>
        <movable-view direction="all" inertia>text</movable-view>
      </movable-area>
      <view class="uni-title uni-common-mt">
        示例 7
        <text>\n可放缩</text>
      </view>
      <movable-area scale-area>
        <movable-view direction="all" @scale="onScale" scale scale-min="0.5" scale-max="4"
          :scale-value="scale">text</movable-view>
      </movable-area>
      <view @tap="tap2" class="uni-link uni-center uni-common-mt" style="padding-bottom:40px;">
        点击这里放大3倍
      </view>
    </view>
  </view>
</template>

<script setup lang="uts">
  const x = ref(0)
  const y = ref(0)
  const scale = ref(2)
  const old = reactive({
    x: 0,
    y: 0,
    scale: 2
  })

  const tap = (e) => {
    // 解决view层不同步的问题
    x.value = old.x
    y.value = old.y
    nextTick(() => {
      x.value = 30
      y.value = 30
    })
  }

  const tap2 = () => {
    // 解决view层不同步的问题
    scale.value = old.scale
    nextTick(() => {
      scale.value = 3
    })
  }

  const onChange = (e) => {
    old.x = e.detail.x
    old.y = e.detail.y
  }

  const onScale = (e) => {
    old.scale = e.detail.scale
  }

  defineExpose({
  	x,
  	y,
  	scale,
  	tap,
  	tap2 // 仅供自动化测试用例调用
  })

</script>

<style>
  movable-view {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 75px;
    width: 75px;
    background-color: #007AFF;
    color: #fff;
  }

  movable-area {
    height: 150px;
    width: 100%;
    background-color: #D8D8D8;
    overflow: hidden;
  }

  .max {
    width: 250px;
    height: 250px;
  }
</style>