feat: 添加拖拽上传图片/视频功能

- 支持拖拽图片到窗口自动上传到输入栏
- 支持拖拽视频到窗口自动上传到输入栏
- 支持拖拽其他文件触发普通上传
- 多主题适配：经典色(橙色)、浅色(黑色)、深色(白色)
- 修复浅色/经典色主题下提示文字看不清的问题

static/src/App.vue

@@ -1,5 +1,22 @@
 <template>
   <AppShell :download-file="downloadFile" :download-folder="downloadFolder">
+    <!-- 拖拽上传提示层 -->
+    <transition name="drag-overlay-fade">
+      <div v-if="dragOverActive" class="drag-upload-overlay">
+        <div class="drag-upload-content">
+          <div class="drag-upload-icon">
+            <svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.5">
+              <path d="M21 15v4a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-4"/>
+              <polyline points="17 8 12 3 7 8"/>
+              <line x1="12" y1="3" x2="12" y2="15"/>
+            </svg>
+          </div>
+          <div class="drag-upload-text">松开鼠标上传图片</div>
+          <div class="drag-upload-hint">支持拖拽图片、视频文件到此处</div>
+        </div>
+      </div>
+    </transition>
+
     <div v-if="!isConnected && messages.length === 0" class="app-loading-state">
       <div class="loading-animation" aria-hidden="true">
         <!-- From Uiverse.io by Nawsome -->

static/src/app/lifecycle.ts

@@ -85,6 +85,9 @@ export async function mounted() {
   this.resourceStartContainerStatsPolling();
   this.resourceStartProjectStoragePolling();
   this.resourceStartUsageQuotaPolling();
+
+  // 设置拖拽上传
+  this.setupDragAndDrop();
 }
 
 export function beforeUnmount() {
@@ -112,6 +115,9 @@ export function beforeUnmount() {
   this.resourceStopUsageQuotaPolling();
   this.stopConnectionHeartbeat();
   teardownShowImageObserver();
+
+  // 移除拖拽上传监听
+  this.teardownDragAndDrop();
   if (this.titleTypingTimer) {
     clearInterval(this.titleTypingTimer);
     this.titleTypingTimer = null;

static/src/app/methods/upload.ts

@@ -404,5 +404,156 @@ export const uploadMethods = {
       return;
     }
     this.triggerFileUpload();
+  },
+
+  // 拖拽上传相关方法
+  handleDragEnter(event: DragEvent) {
+    event.preventDefault();
+    event.stopPropagation();
+    // 检查是否包含文件
+    if (event.dataTransfer?.types?.includes('Files')) {
+      this.dragOverActive = true;
+    }
+  },
+
+  handleDragOver(event: DragEvent) {
+    event.preventDefault();
+    event.stopPropagation();
+  },
+
+  handleDragLeave(event: DragEvent) {
+    event.preventDefault();
+    event.stopPropagation();
+    // 只有当真正离开窗口时才关闭
+    const rect = document.body.getBoundingClientRect();
+    const x = event.clientX;
+    const y = event.clientY;
+    if (x <= rect.left || x >= rect.right || y <= rect.top || y >= rect.bottom) {
+      this.dragOverActive = false;
+    }
+  },
+
+  handleDrop(event: DragEvent) {
+    event.preventDefault();
+    event.stopPropagation();
+    this.dragOverActive = false;
+
+    if (!this.isConnected) {
+      this.uiPushToast({
+        title: '未连接',
+        message: '请等待服务器连接后再上传',
+        type: 'warning'
+      });
+      return;
+    }
+
+    const policyStore = usePolicyStore();
+    if (policyStore.uiBlocks?.block_upload) {
+      this.uiPushToast({
+        title: '上传被禁用',
+        message: '已被管理员禁用上传功能',
+        type: 'warning'
+      });
+      return;
+    }
+
+    const files = event.dataTransfer?.files;
+    if (!files || files.length === 0) {
+      return;
+    }
+
+    // 处理拖拽的文件
+    this.processDroppedFiles(Array.from(files));
+  },
+
+  async processDroppedFiles(files: File[]) {
+    if (!files.length) return;
+
+    // 分离图片和非图片文件
+    const imageFiles = files.filter(file => this.isImageFile(file));
+    const videoFiles = files.filter(file => this.isVideoFile(file));
+    const otherFiles = files.filter(file => !this.isImageFile(file) && !this.isVideoFile(file));
+
+    // 优先处理图片，其次视频
+    if (imageFiles.length > 0) {
+      await this.handleDroppedImages(imageFiles);
+    } else if (videoFiles.length > 0) {
+      await this.handleDroppedVideo(videoFiles[0]); // 视频只取第一个
+    }
+
+    // 处理其他文件（普通文件上传）
+    if (otherFiles.length > 0) {
+      this.uploadHandleSelected(otherFiles);
+    }
+  },
+
+  async handleDroppedImages(files: File[]) {
+    const modelStore = useModelStore();
+    const currentModel = modelStore.models.find((m) => m.key === this.currentModelKey);
+    if (!currentModel?.supportsImage) {
+      this.uiPushToast({
+        title: '当前模型不支持图片',
+        message: '请选择支持图片输入的模型后再发送图片',
+        type: 'error'
+      });
+      return;
+    }
+
+    // 只上传并添加到输入栏，不自动发送
+    await this.handleLocalImageFiles(files);
+  },
+
+  async handleDroppedVideo(file: File) {
+    const modelStore = useModelStore();
+    const currentModel = modelStore.models.find((m) => m.key === this.currentModelKey);
+    if (!currentModel?.supportsVideo) {
+      this.uiPushToast({
+        title: '当前模型不支持视频',
+        message: '请切换到支持视频输入的模型后再发送视频',
+        type: 'error'
+      });
+      return;
+    }
+
+    // 只上传并添加到输入栏，不自动发送
+    await this.handleLocalVideoFiles([file]);
+  },
+
+  _boundDragEnter: null as ((e: DragEvent) => void) | null,
+  _boundDragOver: null as ((e: DragEvent) => void) | null,
+  _boundDragLeave: null as ((e: DragEvent) => void) | null,
+  _boundDrop: null as ((e: DragEvent) => void) | null,
+
+  setupDragAndDrop() {
+    // 存储绑定后的函数以便后续移除
+    this._boundDragEnter = this.handleDragEnter.bind(this);
+    this._boundDragOver = this.handleDragOver.bind(this);
+    this._boundDragLeave = this.handleDragLeave.bind(this);
+    this._boundDrop = this.handleDrop.bind(this);
+
+    // 使用 document.body 作为拖拽监听目标
+    document.body.addEventListener('dragenter', this._boundDragEnter);
+    document.body.addEventListener('dragover', this._boundDragOver);
+    document.body.addEventListener('dragleave', this._boundDragLeave);
+    document.body.addEventListener('drop', this._boundDrop);
+  },
+
+  teardownDragAndDrop() {
+    if (this._boundDragEnter) {
+      document.body.removeEventListener('dragenter', this._boundDragEnter);
+    }
+    if (this._boundDragOver) {
+      document.body.removeEventListener('dragover', this._boundDragOver);
+    }
+    if (this._boundDragLeave) {
+      document.body.removeEventListener('dragleave', this._boundDragLeave);
+    }
+    if (this._boundDrop) {
+      document.body.removeEventListener('drop', this._boundDrop);
+    }
+    this._boundDragEnter = null;
+    this._boundDragOver = null;
+    this._boundDragLeave = null;
+    this._boundDrop = null;
   }
 };

static/src/app/state.ts

@@ -144,6 +144,15 @@ export function dataState() {
     // 新手教程首次引导弹窗
     tutorialPromptVisible: false,
     tutorialPromptLoading: false,
-    tutorialPromptUsername: ''
+    tutorialPromptUsername: '',
+
+    // 拖拽上传状态
+    dragOverActive: false,
+
+    // 拖拽事件绑定函数（用于正确移除监听）
+    _boundDragEnter: null,
+    _boundDragOver: null,
+    _boundDragLeave: null,
+    _boundDrop: null
   };
 }

static/src/styles/components/drag-upload.scss

@@ -0,0 +1,123 @@
+// 拖拽上传覆盖层样式 - 多主题适配
+// 经典色: 橙色 accent | 浅色: 黑色 | 深色: 白色
+
+.drag-upload-overlay {
+  position: fixed;
+  inset: 0;
+  background: var(--theme-overlay-scrim);
+  backdrop-filter: blur(4px);
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  z-index: 9999;
+  pointer-events: none;
+}
+
+.drag-upload-content {
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  gap: 16px;
+  padding: 48px 64px;
+  border: 2px dashed var(--claude-accent);
+  border-radius: 16px;
+  background: var(--claude-highlight);
+  animation: drag-pulse 1.5s ease-in-out infinite;
+}
+
+.drag-upload-icon {
+  width: 64px;
+  height: 64px;
+  color: var(--claude-accent);
+
+  svg {
+    width: 100%;
+    height: 100%;
+  }
+}
+
+.drag-upload-text {
+  font-size: 20px;
+  font-weight: 600;
+  color: var(--claude-text);
+}
+
+.drag-upload-hint {
+  font-size: 14px;
+  color: var(--claude-text-secondary);
+}
+
+// 动画 - 使用主题色的脉冲效果
+@keyframes drag-pulse {
+  0%, 100% {
+    box-shadow: 0 0 0 0 var(--claude-highlight);
+  }
+  50% {
+    box-shadow: 0 0 0 12px transparent;
+  }
+}
+
+// 过渡动画
+.drag-overlay-fade-enter-active,
+.drag-overlay-fade-leave-active {
+  transition: opacity 0.2s ease;
+}
+
+.drag-overlay-fade-enter-from,
+.drag-overlay-fade-leave-to {
+  opacity: 0;
+}
+
+// 浅色主题(light) - 使用黑色强调
+:root[data-theme='light'] {
+  .drag-upload-content {
+    border-color: var(--claude-text);
+    background: var(--claude-highlight);
+  }
+
+  .drag-upload-icon {
+    color: var(--claude-text);
+  }
+
+  .drag-upload-hint {
+    color: var(--claude-text);
+  }
+
+  @keyframes drag-pulse {
+    0%, 100% {
+      box-shadow: 0 0 0 0 rgba(0, 0, 0, 0.1);
+    }
+    50% {
+      box-shadow: 0 0 0 12px transparent;
+    }
+  }
+}
+
+// 经典色主题(claude) - 提示文字改为黑色
+:root[data-theme='claude'],
+:root:not([data-theme]) {
+  .drag-upload-hint {
+    color: var(--claude-text);
+  }
+}
+
+// 深色主题(dark) - 使用白色强调
+:root[data-theme='dark'] {
+  .drag-upload-content {
+    border-color: var(--claude-text);
+    background: var(--claude-highlight);
+  }
+
+  .drag-upload-icon {
+    color: var(--claude-text);
+  }
+
+  @keyframes drag-pulse {
+    0%, 100% {
+      box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.1);
+    }
+    50% {
+      box-shadow: 0 0 0 12px transparent;
+    }
+  }
+}

static/src/styles/index.scss

@@ -11,4 +11,5 @@
 @use './components/chat/virtual-monitor';
 @use './components/input/composer';
 @use './components/overlays/overlays';
+@use './components/drag-upload';
 @use './utilities/responsive';