弹窗组件优化

static/nativeComponents/PopUp/index.wxml

 <!--static/nativeComponents/PopUp/index.wxml-->
 <view class="pop-up" wx:if="{{domainShow}}">
   <view class="shade"></view>
-  <view class="content">
-    <image src="{{img}}" bindtap="onclickHandle" mode="widthFix"></image>
+  <view class="content" style="width:{{datas.componentData.imgWidth ? datas.componentData.imgWidth + '%' : '80%'}};height:{{datas.componentData.imgHeight ? datas.componentData.imgHeight + '%' : 'auto'}}">
+    <image mode="{{datas.componentData.objectFit == 'cover' ? 'aspectFill' : datas.componentData.objectFit == 'contain' ? 'aspectFit' : 'widthFix'}}" src="{{img}}" bindtap="onclickHandle"></image>
     <view class="back {{datas.componentData.backButtonSite=='bottom'?'back-bottom':'back-top'}}" bindtap="backHandle">
       <em></em>
       <em></em>

static/nativeComponents/PopUp/index.wxss

@@ -21,9 +21,13 @@
   top: 50%;
   left: 50%;
   transform: translate(-50%, -50%);
+  display: flex;
+  flex-direction: column;
+  justify-content: center;
 }
 .content image{
-  width: 100%
+  width: 100%;
+  height: 100%;
 }
 .content .back{
   width: 48rpx;