<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:80rpx;">
        点击这里放大3倍
      </view>
    </view>
  </view>
</template>

<script lang="uts">
  export default {
    data() {
      return {
        x: 0,
        y: 0,
        scale: 2,
        old: {
          x: 0,
          y: 0,
          scale: 2
        }
      }
    },
    methods: {
      tap: function (e) {
        // 解决view层不同步的问题
        this.x = this.old.x
        this.y = this.old.y
        this.$nextTick(function () {
          this.x = 30
          this.y = 30
        })
      },
      tap2() {
        // 解决view层不同步的问题
        this.scale = this.old.scale
        this.scale = this.old.scale
        this.$nextTick(function () {
          this.scale = 3
        })
      },
      onChange: function (e) {
        this.old.x = e.detail.x
        this.old.y = e.detail.y
      },
      onScale: function (e) {
        this.old.scale = e.detail.scale
      }
    }
  }
</script>

<style>
  movable-view {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 150rpx;
    width: 150rpx;
    background-color: #007AFF;
    color: #fff;
  }

  movable-area {
    height: 300rpx;
    width: 100%;
    background-color: #D8D8D8;
    overflow: hidden;
  }

  .max {
    width: 500rpx;
    height: 500rpx;
  }
</style>
