movable-view组件（拖拽缩放）

<view>movable-view组件</view>
<view class=‘section‘>
  <view class=‘section_title‘>movable-view区域小于movable-area</view>
  <movable-area style=‘height:200rpx;width:200rpx;background:red;‘>
    <movable-view style="height:50rpx;width:50rpx;background:yellow;" x=‘{{x}}‘ y=‘{{y}}‘ direction=‘all‘ inertia=‘true‘></movable-view>
  </movable-area>
  <view class=‘btn-area‘>
    <button size=‘mini‘ bindtap="tap">click me to move to(30rpx,30rpx)</button>
  </view>
  <view>movable区域大于movable-area</view>
  <movable-area style=‘height:100rpx;width:100rpx;background:red;‘>
    <movable-view style="height:200rpx;width:200rpx;background:blue;" direction=‘all‘ bindchange=‘onchange‘ bindscale=‘onscale‘ scale scale-min=‘0.5‘ scale-max=‘4‘ scale-value=‘2‘></movable-view>
  </movable-area>
</view>

Page({
  data:{
    x:0,
    y:0
  },
  tap:function(e){
    this.setData({
      x:30,
      y:30
    });
  },
  onChange:function(e){
    console.log(e.detail);
  },
  onScale: function (e) {
    console.log(e.detail);
  }
})