修复bug

src/components/CinematicSlideshow.vue

@@ -151,6 +151,7 @@ let accumulatedTime = 0
 let rafId = null
 let controlsTimer = null
 let isSwitching = false
+const loadedImageUrls = new Set() // 记录已加载的图片 URL，避免重复加载检测
 
 const currentPhoto = computed(() => props.photos[currentIndex.value])
 // 加载期间给个默认背景或黑屏，避免报错
@@ -205,6 +206,7 @@ const preloadAllImages = async () => {
   const promises = props.photos.map(photo => {
     const url = getImgUrl(photo.original || photo.compressed)
     return loadImage(url).then(() => {
+      loadedImageUrls.add(url) // 记录已加载的 URL
       loadedCount.value++
       loadingProgress.value = Math.floor((loadedCount.value / totalCount.value) * 100)
     })
@@ -251,15 +253,17 @@ const loop = (timestamp) => {
 const handleAutoSwitch = async () => {
   isSwitching = true
   const nextIdx = (currentIndex.value + 1) % props.photos.length
-
-  // 即使预加载过，也检查一下（通常会立即返回）
   const nextPhoto = props.photos[nextIdx]
   const nextUrl = getImgUrl(nextPhoto.original || nextPhoto.compressed)
 
-  const bufferTimeout = setTimeout(() => { isBuffering.value = true }, 100)
-  await loadImage(nextUrl)
-  clearTimeout(bufferTimeout)
-  isBuffering.value = false
+  // 只有未加载过的图片才需要等待加载
+  if (!loadedImageUrls.has(nextUrl)) {
+    const bufferTimeout = setTimeout(() => { isBuffering.value = true }, 100)
+    await loadImage(nextUrl)
+    loadedImageUrls.add(nextUrl)
+    clearTimeout(bufferTimeout)
+    isBuffering.value = false
+  }
 
   nextSlide(true)
   isSwitching = false
@@ -286,13 +290,18 @@ const prevSlide = async () => {
   accumulatedTime = 0
   progress.value = 0
   const prevIdx = (currentIndex.value - 1 + props.photos.length) % props.photos.length
-
-  isSwitching = true
-  isBuffering.value = true
   const prevPhoto = props.photos[prevIdx]
-  await loadImage(getImgUrl(prevPhoto.original || prevPhoto.compressed))
-  isBuffering.value = false
-  isSwitching = false
+  const prevUrl = getImgUrl(prevPhoto.original || prevPhoto.compressed)
+
+  // 只有未加载过的图片才需要显示 buffering
+  if (!loadedImageUrls.has(prevUrl)) {
+    isSwitching = true
+    isBuffering.value = true
+    await loadImage(prevUrl)
+    loadedImageUrls.add(prevUrl)
+    isBuffering.value = false
+    isSwitching = false
+  }
 
   currentIndex.value = prevIdx
   emit('update:index', currentIndex.value)

src/components/SwipeSlideshow.vue

@@ -81,7 +81,6 @@
           <!-- 每个 Slide 的图片 -->
           <img
               :src="getImgUrl(photo.original || photo.compressed)"
-              loading="lazy"
           />
         </div>
       </swiper-slide>