提升清晰度

src/store/pptWork.ts

@@ -87,7 +87,10 @@ const useStore = defineStore("pptWork", {
       try {
         const coverImgDom = document.querySelector("#thumbnailSlide_0") as HTMLElement
         if (coverImgDom) {
-          const dataBlob = await toBlob(coverImgDom)
+          const dataBlob = await toBlob(coverImgDom, {
+            // 提高缩放比例
+            pixelRatio: 3
+          })
           if (dataBlob) {
             const url = await fileUpload(`${this.id}coverImg`, dataBlob, `${this.id}/`, false, { isLoading: false })
             url && (this.coverImg = url)