新增：图片文件预览功能

web/src/components/FileSystem.vue

@@ -108,7 +108,30 @@
         <a-col :span="12">
           <a-card title="📝 文件内容">
             <a-space direction="vertical" :size="8" style="width: 100%">
-              <div
+
+              <!-- 图片预览 -->
+              <div v-if="isImageFile" class="image-preview-container">
+                <div class="image-preview-wrapper">
+                  <img
+                    :src="imagePreviewUrl"
+                    class="preview-image"
+                    @load="onImageLoad"
+                    @error="onImageError"
+                    alt="图片预览"
+                  />
+                  <div v-if="imageLoading" class="image-loading">
+                    <a-spin />
+                    <span>加载中...</span>
+                  </div>
+                </div>
+                <div class="image-info">
+                  <a-tag>{{ getImageType() }}</a-tag>
+                  <span v-if="imageSize">{{ formatBytes(imageSize) }}</span>
+                </div>
+              </div>
+
+              <!-- 文本编辑器 -->
+              <div v-else
                 class="file-content-wrapper"
                 :style="{ height: fileContentHeight + 'px' }"
               >
@@ -118,7 +141,9 @@
                   placeholder="文件内容将显示在这里，点击文件列表中的文件即可查看"
                 />
               </div>
+
               <div
+                v-if="!isImageFile"
                 class="resize-handle"
                 @mousedown="startResize"
                 title="拖拽调整高度"
@@ -130,9 +155,9 @@
                   <template #icon>
                     <icon-file />
                   </template>
-                  读取
+                  {{ isImageFile ? '预览' : '读取' }}
                 </a-button>
-                <a-button @click="writeFile" :loading="fileLoading">
+                <a-button @click="writeFile" :loading="fileLoading" v-if="!isImageFile">
                   <template #icon>
                     <icon-save />
                   </template>
@@ -260,6 +285,12 @@ const pathHistory = ref([])
 const fileContentHeight = ref(250)
 const favoriteFiles = ref([])
 
+// 图片预览相关
+const isImageFile = ref(false)
+const imagePreviewUrl = ref('')
+const imageLoading = ref(false)
+const imageSize = ref(0)
+
 // 格式化文件大小
 const formatBytes = (bytes) => {
   if (!bytes) return '0 B'
@@ -382,13 +413,10 @@ const readFile = async () => {
   // 检查文件类型
   const ext = filePath.value.split('.').pop()?.toLowerCase() || ''
 
-  // 图片文件 - 提示无法预览
-  const imageExts = ['jpg', 'jpeg', 'png', 'gif', 'bmp', 'svg', 'webp', 'ico', 'heic', 'heif']
+  // 图片文件 - 显示预览
+  const imageExts = ['jpg', 'jpeg', 'png', 'gif', 'bmp', 'svg', 'webp', 'ico']
   if (imageExts.includes(ext)) {
-    Message.warning({
-      content: '图片文件暂不支持预览，请使用图片查看器打开',
-      duration: 3000
-    })
+    await previewImage()
     return
   }
 
@@ -438,8 +466,71 @@ const readFile = async () => {
   await performFileRead()
 }
 
+// 预览图片
+const previewImage = async () => {
+  if (!filePath.value) {
+    Message.error('请输入文件路径')
+    return
+  }
+
+  isImageFile.value = true
+  imageLoading.value = true
+  imagePreviewUrl.value = ''
+  imageSize.value = 0
+
+  try {
+    // 使用文件协议直接显示图片
+    // 转换 Windows 路径格式
+    let imagePath = filePath.value.replace(/\\/g, '/')
+    imagePreviewUrl.value = `file:///${imagePath}`
+
+    // 获取文件大小
+    const file = fileList.value.find(f => f.path === filePath.value)
+    if (file && file.size) {
+      imageSize.value = file.size
+    }
+
+    Message.success('图片加载成功')
+  } catch (error) {
+    console.error('图片预览失败:', error)
+    Message.error('图片预览失败: ' + (error.message || error))
+    isImageFile.value = false
+  } finally {
+    imageLoading.value = false
+  }
+}
+
+// 图片加载完成
+const onImageLoad = () => {
+  imageLoading.value = false
+}
+
+// 图片加载失败
+const onImageError = () => {
+  imageLoading.value = false
+  Message.error('图片加载失败，可能是格式不支持或文件损坏')
+}
+
+// 获取图片类型标签
+const getImageType = () => {
+  if (!filePath.value) return ''
+  const ext = filePath.value.split('.').pop()?.toLowerCase() || ''
+  const typeMap = {
+    'jpg': 'JPEG',
+    'jpeg': 'JPEG',
+    'png': 'PNG',
+    'gif': 'GIF',
+    'bmp': 'BMP',
+    'svg': 'SVG',
+    'webp': 'WebP',
+    'ico': 'ICO'
+  }
+  return typeMap[ext] || ext.toUpperCase()
+}
+
 // 执行文件读取
 const performFileRead = async () => {
+  isImageFile.value = false
   fileLoading.value = true
   try {
     const content = await readFileApi(filePath.value)
@@ -526,6 +617,8 @@ const deleteFile = async () => {
 // 清空内容
 const clearContent = () => {
   fileContent.value = ''
+  isImageFile.value = false
+  imagePreviewUrl.value = ''
   Message.info('内容已清空')
 }
 
@@ -750,6 +843,54 @@ onMounted(() => {
   border: none;
 }
 
+/* 图片预览容器 */
+.image-preview-container {
+  width: 100%;
+}
+
+.image-preview-wrapper {
+  position: relative;
+  width: 100%;
+  min-height: 300px;
+  max-height: 600px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  background: var(--color-fill-1);
+  border: 1px solid var(--color-border-2);
+  border-radius: 8px;
+  overflow: hidden;
+}
+
+.preview-image {
+  max-width: 100%;
+  max-height: 600px;
+  object-fit: contain;
+  display: block;
+  margin: 0 auto;
+}
+
+.image-loading {
+  position: absolute;
+  top: 50%;
+  left: 50%;
+  transform: translate(-50%, -50%);
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  gap: 12px;
+  color: var(--color-text-3);
+}
+
+.image-info {
+  display: flex;
+  align-items: center;
+  gap: 12px;
+  padding: 8px 0;
+  font-size: 13px;
+  color: var(--color-text-3);
+}
+
 .file-content-wrapper {
   position: relative;
   overflow: hidden;