style: 预览组件图片背景色支持配置，默认值：#F7F7F7

src/components/ThumbnailPreview/index.vue

@@ -17,6 +17,10 @@
             type: String,
             default: 'aspectFit',
         },
+        background: {
+            type: String,
+            default: '#F7F7f7',
+        },
         assets: {
             type: Array as PropType<Recordable & URLs>,
         },
@@ -49,7 +53,8 @@
     const videoFullScreenChange = (e: any) => {
         // 非全屏状态下停止播放
         if (!e.detail.fullScreen) {
-            videoContext.value?.stop()
+            videoContext.value.seek(0)
+            videoContext.value.pause()
         }
     }
 
@@ -64,6 +69,7 @@
         <!-- 视频预览 -->
         <fui-lazyload
             class="preview-video"
+            :background="props.background"
             :mode="props.mode"
             v-for="(item, index) in videos"
             :key="item.url"
@@ -81,6 +87,7 @@
         <!-- 图片预览 -->
         <fui-lazyload
             class="preview-image"
+            :background="props.background"
             :mode="props.mode"
             v-for="(item, index) in images"
             :key="item.url"