优化画布视频首尾帧入口与工具栏布局

components/canvas/CanvasChatPanel.tsx

@@ -300,6 +300,7 @@ export function CanvasChatPanel({ chatId, initialMessages = [], onClose, onOpenF
   const [isSessionMenuOpen, setIsSessionMenuOpen] = useState(false);
   const messagesEndRef = useRef<HTMLDivElement>(null);
   const fileInputRef = useRef<HTMLInputElement>(null);
+  const videoSlotInputRefs = useRef<Array<HTMLInputElement | null>>([]);
   const textareaRef = useRef<HTMLTextAreaElement>(null);
   const hiddenPromptRef = useRef<string | null>(null);
   const autoContextRef = useRef<string | null>(null);
@@ -321,6 +322,7 @@ export function CanvasChatPanel({ chatId, initialMessages = [], onClose, onOpenF
     imageCount: 1,
   });
   const [videoParams, setVideoParams] = useState<VideoGenerationParams | null>(null);
+  const [videoSlotUploading, setVideoSlotUploading] = useState<number | null>(null);
 
   // 🆕 保存图片参数到 localStorage
   const handleImageParamsChange = (params: ImageGenerationParams) => {
@@ -864,6 +866,12 @@ export function CanvasChatPanel({ chatId, initialMessages = [], onClose, onOpenF
   const allModels = [SMART_AUTO_MODEL, ...visualModels];
   const currentModel = allModels.find((model) => model.id === selectedModelId);
   const isVideoModel = Boolean(currentModel && VIDEO_PROVIDER_TYPES.has(currentModel.providerType));
+  const videoFrameSlots = useMemo(() => {
+    if (!isVideoModel || !videoParams) return [] as string[];
+    if (videoParams.mode === "first-last-frame") return ["首帧", "尾帧"] as string[];
+    if (videoParams.mode === "first-frame") return ["首帧"] as string[];
+    return [] as string[];
+  }, [isVideoModel, videoParams]);
   
   // 默认选择模型（根据系统设置）
   useEffect(() => {
@@ -903,6 +911,22 @@ export function CanvasChatPanel({ chatId, initialMessages = [], onClose, onOpenF
     }
   }, [isVideoModel, currentModel?.providerType, videoParams]);
 
+  useEffect(() => {
+    if (!isVideoModel || videoFrameSlots.length === 0) return;
+    const maxAttachments = videoFrameSlots.length;
+    setAttachments((current) => {
+      if (current.length <= maxAttachments) return current;
+      return current.slice(0, maxAttachments);
+    });
+  }, [isVideoModel, videoFrameSlots.length]);
+
+  useEffect(() => {
+    if (videoFrameSlots.length === 0) return;
+    const editableDiv = textareaRef.current as HTMLDivElement | null;
+    if (!editableDiv) return;
+    editableDiv.querySelectorAll("[data-attachment-url]").forEach((element) => element.remove());
+  }, [videoFrameSlots.length]);
+
   // 合并 initialMessages 和历史消息
   const mergedInitialMessages = historyData?.messages ?? (activeChatId === chatId ? initialMessages : []);
   
@@ -1388,6 +1412,96 @@ export function CanvasChatPanel({ chatId, initialMessages = [], onClose, onOpenF
     return lines.join("\n");
   }, [nodes, selectedImageNodes]);
 
+  const updateAttachmentAtVideoSlot = useCallback(
+    (slotIndex: number, attachment: PickedObjectAttachment | null) => {
+      const slotCount = Math.max(videoFrameSlots.length, 2);
+      setAttachments((current) => {
+        const slots: Array<PickedObjectAttachment | null> = Array.from(
+          { length: slotCount },
+          (_, index) => current[index] ?? null
+        );
+        slots[slotIndex] = attachment;
+        while (slots.length > 0 && !slots[slots.length - 1]) {
+          slots.pop();
+        }
+        return slots.filter((item): item is PickedObjectAttachment => Boolean(item));
+      });
+    },
+    [videoFrameSlots.length]
+  );
+
+  const handleVideoSlotFileChange = useCallback(
+    async (slotIndex: number, event: React.ChangeEvent<HTMLInputElement>) => {
+      const file = event.target.files?.[0];
+      if (!file) return;
+
+      if (!file.type.startsWith("image/")) {
+        toast.error("请上传图片文件");
+        event.currentTarget.value = "";
+        return;
+      }
+
+      if (file.size > 50 * 1024 * 1024) {
+        toast.error("图片大小不能超过 50MB");
+        event.currentTarget.value = "";
+        return;
+      }
+
+      setVideoSlotUploading(slotIndex);
+      try {
+        const formData = new FormData();
+        formData.append("file", file);
+
+        const response = await fetch("/api/files/upload", {
+          method: "POST",
+          body: formData,
+        });
+
+        if (!response.ok) {
+          throw new Error("上传失败");
+        }
+
+        const data = await response.json();
+        const imageUrl = data.url as string;
+
+        updateAttachmentAtVideoSlot(slotIndex, {
+          url: imageUrl,
+          name: file.name,
+          contentType: file.type || "image/jpeg",
+        });
+
+        const dimensions = await getImageDimensions(imageUrl);
+        const nodeIndex = nodes.length + slotIndex;
+        const spacing = 20;
+        const x = 100 + (nodeIndex % 3) * (dimensions.width + spacing);
+        const y = 100 + Math.floor(nodeIndex / 3) * (dimensions.height + spacing);
+        addNode({
+          type: "image",
+          position: { x, y },
+          size: { width: dimensions.width, height: dimensions.height },
+          data: {
+            src: imageUrl,
+            status: "completed",
+            title: file.name.replace(/\.[^.]+$/, ""),
+            prompt: file.name.replace(/\.[^.]+$/, ""),
+            metadata: {
+              originalWidth: dimensions.originalWidth,
+              originalHeight: dimensions.originalHeight,
+            },
+          },
+          connections: [],
+        });
+        toast.success(`${slotIndex === 0 ? "首帧" : "尾帧"}上传成功`);
+      } catch (_error) {
+        toast.error("图片上传失败");
+      } finally {
+        setVideoSlotUploading(null);
+        event.currentTarget.value = "";
+      }
+    },
+    [addNode, nodes.length, updateAttachmentAtVideoSlot]
+  );
+
   // 处理发送（图片已在上传时添加到画布，这里只发送消息）
   const handleSend = useCallback(async () => {
     if (!input.trim() && attachments.length === 0) return;
@@ -1408,7 +1522,8 @@ export function CanvasChatPanel({ chatId, initialMessages = [], onClose, onOpenF
     if (
       effectiveAttachments.length === 0 &&
       input.trim() &&
-      (!videoImageLimit || videoImageLimit.max > 0)
+      (!videoImageLimit || videoImageLimit.max > 0) &&
+      videoFrameSlots.length === 0
     ) {
       const recentAttachments = getRecentImageAttachments();
       if (recentAttachments.length > 0) {
@@ -1546,6 +1661,7 @@ export function CanvasChatPanel({ chatId, initialMessages = [], onClose, onOpenF
     buildAutoContext,
     isVideoModel,
     videoParams,
+    videoFrameSlots.length,
     currentModel?.providerType,
     selectedImageNodes,
   ]);
@@ -1761,6 +1877,15 @@ export function CanvasChatPanel({ chatId, initialMessages = [], onClose, onOpenF
   };
 
   const isLoading = status === 'streaming' || status === 'submitted';
+  const currentVideoImageLimit = isVideoModel
+    ? getVideoImageLimit(videoParams, currentModel?.providerType)
+    : null;
+  const showVideoAttachmentButton = Boolean(
+    isVideoModel &&
+      currentVideoImageLimit &&
+      currentVideoImageLimit.max > 0 &&
+      videoFrameSlots.length === 0
+  );
   const lastUserIndexForMarkers = messages.findLastIndex(m => m.role === "user");
   const messagesAfterLastUser = lastUserIndexForMarkers >= 0 ? messages.slice(lastUserIndexForMarkers + 1) : messages;
   const hasGenerationStart = messagesAfterLastUser.some(msg =>
@@ -2235,7 +2360,12 @@ export function CanvasChatPanel({ chatId, initialMessages = [], onClose, onOpenF
           data-canvas-chat-input-anchor="true"
         >
           {/* 混合输入区域：使用 contenteditable 实现真正的混合编辑 */}
-          <div className="relative px-4 pt-3 pb-12 min-h-[60px]">
+          <div
+            className={cn(
+              "relative px-4 pt-3 min-h-[60px]",
+              isVideoModel && videoFrameSlots.length > 0 ? "pb-40" : "pb-12"
+            )}
+          >
             <div
               ref={textareaRef as any}
               contentEditable={!isLoading}
@@ -2252,7 +2382,9 @@ export function CanvasChatPanel({ chatId, initialMessages = [], onClose, onOpenF
                   .replace(/\s+/g, " ")
                   .trim();
                 setInput(textContent);
-                syncAttachmentsWithEditor(target);
+                if (!isVideoModel || videoFrameSlots.length === 0) {
+                  syncAttachmentsWithEditor(target);
+                }
               }}
               onKeyDown={(e) => {
                 if (e.key === 'Enter' && !e.shiftKey) {
@@ -2260,7 +2392,7 @@ export function CanvasChatPanel({ chatId, initialMessages = [], onClose, onOpenF
                   handleSend();
                 }
                 // 处理 Backspace 删除图片标签（只删除聊天框中的标签，不影响画布）
-                if (e.key === 'Backspace') {
+                if (e.key === 'Backspace' && (!isVideoModel || videoFrameSlots.length === 0)) {
                   const selection = window.getSelection();
                   if (selection && selection.rangeCount > 0) {
                     const range = selection.getRangeAt(0);
@@ -2287,6 +2419,60 @@ export function CanvasChatPanel({ chatId, initialMessages = [], onClose, onOpenF
               style={{ whiteSpace: 'pre-wrap', wordBreak: 'break-word' }}
             />
           </div>
+
+          {isVideoModel && videoFrameSlots.length > 0 && (
+            <div className="px-4 pb-2">
+              <div className="flex flex-row gap-2">
+                {videoFrameSlots.map((label, index) => {
+                  const slotAttachment = attachments[index];
+                  const isUploading = videoSlotUploading === index;
+                  const isDisabled = isLoading || (index > 0 && !attachments[index - 1]);
+                  return (
+                    <button
+                      key={`canvas-video-slot-${label}-${index}`}
+                      type="button"
+                      onClick={() => {
+                        if (isDisabled) return;
+                        videoSlotInputRefs.current[index]?.click();
+                      }}
+                      className={cn(
+                        "group relative flex h-24 w-24 shrink-0 items-center justify-center overflow-hidden rounded-xl border bg-muted/30 text-muted-foreground transition-colors",
+                        !isDisabled && "cursor-pointer hover:border-primary/60 hover:bg-muted/50",
+                        isDisabled && "cursor-not-allowed opacity-55"
+                      )}
+                    >
+                      {slotAttachment ? (
+                        <>
+                          <img
+                            src={slotAttachment.url}
+                            alt={slotAttachment.name || label}
+                            className="h-full w-full object-cover"
+                          />
+                          <div className="absolute inset-x-0 bottom-0 bg-black/55 px-1 py-0.5 text-center text-[11px] text-white">
+                            {label}
+                          </div>
+                          <div
+                            className="absolute right-1 top-1 rounded-full bg-black/65 px-1 text-[11px] text-white opacity-0 transition-opacity group-hover:opacity-100"
+                            onClick={(event) => {
+                              event.stopPropagation();
+                              updateAttachmentAtVideoSlot(index, null);
+                            }}
+                          >
+                            x
+                          </div>
+                        </>
+                      ) : (
+                        <div className="flex flex-col items-center gap-1">
+                          <span className="text-xl leading-none">+</span>
+                          <span className="text-sm">{isUploading ? "上传中" : label}</span>
+                        </div>
+                      )}
+                    </button>
+                  );
+                })}
+              </div>
+            </div>
+          )}
           
           {/* Bottom Toolbar */}
           <div className="absolute left-2 bottom-2 right-2 flex items-center gap-2">
@@ -2299,99 +2485,90 @@ export function CanvasChatPanel({ chatId, initialMessages = [], onClose, onOpenF
                 className="hidden"
                 onChange={handleFileSelect}
               />
-              {isVideoModel ? (
-                <>
-                  <Button
-                    type="button"
-                    variant="ghost"
-                    className="h-8 rounded-full border border-blue-500 bg-blue-50 px-3 text-blue-600 hover:bg-blue-100"
-                  >
-                    <Video className="mr-1 h-4 w-4" />
-                    <span className="text-sm font-medium">视频</span>
-                  </Button>
-                  <div className="shrink-0">
-                    <VideoParamsBar
-                      modelName={currentModel?.displayName}
-                      initialParams={videoParams || undefined}
-                      onParamsChange={handleVideoParamsChange}
-                      inline={true}
-                      providerType={currentModel?.providerType}
-                    />
-                  </div>
-                </>
-              ) : (
-                <>
-                  <div className="flex items-center gap-2 shrink-0">
-                    <Button
-                      variant="ghost"
-                      size="icon"
-                      className="h-8 w-8 rounded-full hover:bg-muted text-muted-foreground hover:text-foreground transition-colors flex-shrink-0"
-                      onClick={() => fileInputRef.current?.click()}
-                      disabled={isLoading}
-                    >
-                      <Paperclip className="h-4 w-4" />
-                    </Button>
-                    <Select value={selectedModelId} onValueChange={setSelectedModelId}>
-                      <SelectTrigger className={cn(
-                        "h-8 text-xs transition-colors rounded-full px-2 gap-1.5 w-auto flex-shrink-0",
-                        selectedModelId === "auto"
-                          ? "bg-gradient-to-r from-purple-50 to-blue-50 text-purple-600 border-purple-100 hover:from-purple-100 hover:to-blue-100"
-                          : "bg-blue-50 text-blue-600 border-blue-100 hover:bg-blue-100 hover:border-blue-200"
-                      )}>
-                        <span className="h-5 w-5 overflow-hidden rounded-full border border-blue-200 bg-white">
-                          {allModels.find((m) => m.id === selectedModelId)?.avatarUrl ? (
-                            <img
-                              src={allModels.find((m) => m.id === selectedModelId)?.avatarUrl || ""}
-                              alt={allModels.find((m) => m.id === selectedModelId)?.displayName || "模型头像"}
-                              className="h-full w-full object-cover"
-                            />
-                          ) : (
-                            <span className="flex h-full w-full items-center justify-center text-[10px] font-medium text-blue-500">
-                              {(allModels.find((m) => m.id === selectedModelId)?.displayName || "A").slice(0, 1)}
-                            </span>
-                          )}
-                        </span>
-                        <span className="truncate max-w-[66px]">
-                          {allModels.find((m) => m.id === selectedModelId)?.displayName || "Agent模式"}
-                        </span>
-                      </SelectTrigger>
-                      {renderModelSelectContent()}
-                    </Select>
-                  </div>
-                  <div className="shrink-0">
-                    <ImageParamsBar
-                      modelName={currentModel?.displayName}
-                      initialParams={imageParams}
-                      onParamsChange={handleImageParamsChange}
-                      inline={true}
-                      providerType={currentModel?.providerType}
-                    />
-                  </div>
-                </>
+              {videoFrameSlots.map((_, index) => (
+                <input
+                  key={`canvas-video-slot-input-${index}`}
+                  type="file"
+                  accept="image/*"
+                  className="hidden"
+                  ref={(element) => {
+                    videoSlotInputRefs.current[index] = element;
+                  }}
+                  onChange={(event) => {
+                    void handleVideoSlotFileChange(index, event);
+                  }}
+                />
+              ))}
+              <Button
+                type="button"
+                variant="ghost"
+                className={cn(
+                  "h-8 rounded-full px-3 text-sm font-medium",
+                  isVideoModel
+                    ? "border border-blue-500 bg-blue-50 text-blue-600 hover:bg-blue-100"
+                    : "border border-emerald-500 bg-emerald-50 text-emerald-700 hover:bg-emerald-100"
+                )}
+              >
+                {isVideoModel ? (
+                  <Video className="mr-1 h-4 w-4" />
+                ) : (
+                  <ImagePlus className="mr-1 h-4 w-4" />
+                )}
+                {isVideoModel ? "视频" : "生图"}
+              </Button>
+
+              {(!isVideoModel || showVideoAttachmentButton) && (
+                <Button
+                  variant="ghost"
+                  size="icon"
+                  className="h-8 w-8 rounded-full text-muted-foreground transition-colors hover:bg-muted hover:text-foreground"
+                  onClick={() => fileInputRef.current?.click()}
+                  disabled={isLoading}
+                >
+                  <Paperclip className="h-4 w-4" />
+                </Button>
               )}
+
+              <div className="shrink-0">
+                {isVideoModel ? (
+                  <VideoParamsBar
+                    modelName={currentModel?.displayName}
+                    initialParams={videoParams || undefined}
+                    onParamsChange={handleVideoParamsChange}
+                    inline={true}
+                    providerType={currentModel?.providerType}
+                  />
+                ) : (
+                  <ImageParamsBar
+                    modelName={currentModel?.displayName}
+                    initialParams={imageParams}
+                    onParamsChange={handleImageParamsChange}
+                    inline={true}
+                    providerType={currentModel?.providerType}
+                  />
+                )}
+              </div>
             </div>
 
             <div className="flex items-center gap-2 flex-shrink-0">
-              {isVideoModel && (
-                <Select value={selectedModelId} onValueChange={setSelectedModelId}>
-                  <SelectTrigger className="h-8 w-8 rounded-full border border-[#cfd4dc] bg-white p-0 justify-center [&>svg]:hidden">
-                    <span className="h-6 w-6 overflow-hidden rounded-full bg-white flex items-center justify-center">
-                      {allModels.find((m) => m.id === selectedModelId)?.avatarUrl ? (
-                        <img
-                          src={allModels.find((m) => m.id === selectedModelId)?.avatarUrl || ""}
-                          alt={allModels.find((m) => m.id === selectedModelId)?.displayName || "模型头像"}
-                          className="h-full w-full object-cover"
-                        />
-                      ) : (
-                        <span className="flex h-full w-full items-center justify-center text-[10px] font-medium text-[#4b5563]">
-                          {(allModels.find((m) => m.id === selectedModelId)?.displayName || "A").slice(0, 1)}
-                        </span>
-                      )}
-                    </span>
-                  </SelectTrigger>
-                  {renderModelSelectContent()}
-                </Select>
-              )}
+              <Select value={selectedModelId} onValueChange={setSelectedModelId}>
+                <SelectTrigger className="h-8 w-8 rounded-full border border-[#cfd4dc] bg-white p-0 justify-center [&>svg]:hidden">
+                  <span className="h-6 w-6 overflow-hidden rounded-full bg-white flex items-center justify-center">
+                    {currentModel?.avatarUrl ? (
+                      <img
+                        src={currentModel.avatarUrl}
+                        alt={currentModel.displayName || "模型头像"}
+                        className="h-full w-full object-cover"
+                      />
+                    ) : (
+                      <span className="flex h-full w-full items-center justify-center text-[10px] font-medium text-[#4b5563]">
+                        {(currentModel?.displayName || "A").slice(0, 1)}
+                      </span>
+                    )}
+                  </span>
+                </SelectTrigger>
+                {renderModelSelectContent()}
+              </Select>
 
               <Button
                 size="icon"