feat(背景图): 增加切换时间设置

vdoing/components/BodyBgImg.vue

@@ -15,7 +15,7 @@ export default {
     }
   },
   mounted () {
-    let { bodyBgImg, bodyBgImgOpacity } = this.$themeConfig
+    let { bodyBgImg, bodyBgImgOpacity,bodyBgImgInterval = 15 } = this.$themeConfig
 
     if (type(bodyBgImg) === 'string') {
       this.bgImg = bodyBgImg
@@ -30,7 +30,7 @@ export default {
           count = 0
         }
         this.bgImg = bodyBgImg[count]
-      }, 15000);
+      }, bodyBgImgInterval * 1000);
     }
 
     if (bodyBgImgOpacity !== undefined) {

vdoing/types/index.ts

@@ -43,6 +43,13 @@ export interface VdoingThemeConfig extends NoSidebar4DefaultThemeConfig {
    */
   bodyBgImgOpacity?: 0.1 | 0.2 | 0.3 | 0.4 | 0.5 | 0.6 | 0.7 | 0.8 | 0.9 | 1;
 
+
+  /**
+   * body当多张背景图时，设置切换时间，默认15s
+   * @default 15
+   */
+  bodyBgImgInterval?: number;
+
   /**
    * 是否显示文章标题前的图标
    * @default true