feat(artifact): 添加内容预览缩放选择器和全局format命令

frontend/docs/artifact-zoom-feature.md

@@ -0,0 +1,149 @@
+# Artifact 缩放功能文档
+
+## 功能概述
+
+Artifact 缩放功能允许用户在预览 Markdown 和 HTML 内容时调整缩放比例（50% - 200%），提供更灵活的阅读体验。
+
+## 文件结构
+
+```
+frontend/src/
+├── components/
+│   └── workspace/
+│       └── artifacts/
+│           └── artifact-file-detail.tsx    # 缩放组件定义与使用
+└── styles/
+    └── globals.css                          # 缩放相关 CSS 变量
+```
+
+## 核心实现
+
+### 1. 缩放选择器组件 (`ArtifactZoomSelector`)
+
+**位置**: `artifact-file-detail.tsx`
+
+```tsx
+// 缩放比例选项
+const ZOOM_LEVELS = [50, 60, 70, 80, 90, 100, 110, 120, 130, 150, 175, 200];
+
+export const ArtifactZoomSelector = ({
+  value = 100,
+  onChange,
+}: ArtifactZoomSelectorProps) => {
+  // 放大/缩小逻辑
+  // 返回: [ZoomOut图标] [百分比文本] [ZoomIn图标]
+};
+```
+
+**UI 设计**:
+- 白色圆角容器，带轻微阴影和模糊效果
+- 水平三元素布局：缩小按钮 | 百分比显示 | 放大按钮
+- 支持深色模式
+- 边界值时按钮自动禁用
+
+### 2. CSS 变量缩放 (`globals.css`)
+
+```css
+/* 缩放变量，默认为 1 (100%) */
+:root {
+  --zoom-scale: 1;
+}
+
+/* 字体大小使用 calc() 计算 */
+p {
+  font-size: calc(14px * var(--zoom-scale));
+}
+
+[data-streamdown="heading-1"] {
+  font-size: calc(20px * var(--zoom-scale));
+}
+
+[data-streamdown="heading-2"],
+[data-streamdown="heading-3"] {
+  font-size: calc(16px * var(--zoom-scale));
+}
+```
+
+### 3. 预览组件集成 (`ArtifactFilePreview`)
+
+```tsx
+export function ArtifactFilePreview({
+  content,
+  language,
+  zoom = 100,
+}: {
+  content: string;
+  language: string;
+  zoom?: number;
+}) {
+  const zoomScale = zoom / 100;
+
+  // Markdown: 使用 CSS 变量
+  if (language === "markdown") {
+    return (
+      <div style={{ "--zoom-scale": zoomScale }}>
+        <Streamdown>...</Streamdown>
+      </div>
+    );
+  }
+
+  // HTML: 使用 CSS zoom 属性
+  if (language === "html") {
+    return <iframe style={{ zoom: zoomScale }} />;
+  }
+}
+```
+
+## 使用方式
+
+### 在 ArtifactHeader 中使用
+
+```tsx
+function ArtifactFileDetail() {
+  const [zoom, setZoom] = useState(100);
+
+  return (
+    <Artifact>
+      <ArtifactHeader>
+        <div className="flex items-center gap-2">
+          {/* 其他控件 */}
+          <ArtifactZoomSelector value={zoom} onChange={setZoom} />
+        </div>
+        {/* 中间标题 */}
+        {/* 右侧操作按钮 */}
+      </ArtifactHeader>
+
+      <ArtifactContent>
+        <ArtifactFilePreview
+          content={content}
+          language="markdown"
+          zoom={zoom}
+        />
+      </ArtifactContent>
+    </Artifact>
+  );
+}
+```
+
+## 缩放级别
+
+| 级别 | 比例 |
+|------|------|
+| 最小 | 50% |
+|      | 60%, 70%, 80%, 90% |
+| 默认 | 100% |
+|      | 110%, 120%, 130%, 150%, 175% |
+| 最大 | 200% |
+
+## 技术要点
+
+1. **CSS 变量方式** - 适用于 Markdown 内容，通过 `--zoom-scale` 变量控制所有字体和间距
+2. **CSS zoom 属性** - 适用于 HTML iframe，直接缩放整个内容
+3. **状态提升** - `zoom` 状态在父组件管理，通过 props 传递给预览组件
+4. **响应式** - 缩放变化时所有相关样式自动重新计算
+
+## 扩展建议
+
+- 可添加快捷键支持（如 `Ctrl++` / `Ctrl+-`）
+- 可支持双击重置为 100%
+- 可将缩放状态持久化到 localStorage

frontend/package.json

@@ -8,6 +8,8 @@
     "build": "next build",
     "check": "next lint && tsc --noEmit",
     "dev": "next dev --turbo",
+    "format": "prettier --write \"src/**/*.{ts,tsx,js,jsx,css,json}\"",
+    "format:check": "prettier --check \"src/**/*.{ts,tsx,js,jsx,css,json}\"",
     "lint": "eslint . --ext .ts,.tsx",
     "lint:fix": "eslint . --ext .ts,.tsx --fix",
     "preview": "next build && next start",

frontend/src/components/workspace/artifacts/artifact-file-detail.tsx

@@ -7,8 +7,17 @@ import {
   PackageIcon,
   SquareArrowOutUpRightIcon,
   XIcon,
+  type LucideIcon,
+  ZoomIn,
+  ZoomOut,
 } from "lucide-react";
-import { useCallback, useEffect, useMemo, useState } from "react";
+import {
+  useCallback,
+  useEffect,
+  useMemo,
+  useState,
+  type HTMLAttributes,
+} from "react";
 import { toast } from "sonner";
 import { Streamdown } from "streamdown";
 
@@ -94,6 +103,7 @@ export function ArtifactFileDetail({
 
   const [viewMode, setViewMode] = useState<"code" | "preview">("code");
   const [isInstalling, setIsInstalling] = useState(false);
+  const [zoom, setZoom] = useState(100);
   const { isMock } = useThread();
   useEffect(() => {
     if (isSupportPreview) {
@@ -163,8 +173,11 @@ export function ArtifactFileDetail({
           </ArtifactTitle>
         </div>
         <div className="flex items-center justify-end gap-2">
+          {/* 放大缩小选择器 */}
+          <ArtifactZoomSelector value={zoom} onChange={setZoom} />
           <ArtifactActions>
-            {!isWriteFile && filepath.endsWith(".skill") && (
+            {/* 新界面打开的按钮 */}
+            {/* {!isWriteFile && filepath.endsWith(".skill") && (
               <Tooltip content={t.toolCalls.skillInstallTooltip}>
                 <ArtifactAction
                   icon={isInstalling ? LoaderIcon : PackageIcon}
@@ -177,7 +190,7 @@ export function ArtifactFileDetail({
                   onClick={handleInstallSkill}
                 />
               </Tooltip>
-            )}
+            )} */}
             {!isWriteFile && (
               <a href={urlOfArtifact({ filepath, threadId })} target="_blank">
                 <ArtifactAction
@@ -225,7 +238,7 @@ export function ArtifactFileDetail({
           </ArtifactActions>
         </div>
       </ArtifactHeader>
-
+      {/* 主内容区 */}
       <ArtifactContent className="rounded-[10px] bg-white p-0">
         {isSupportPreview &&
           viewMode === "preview" &&
@@ -233,12 +246,14 @@ export function ArtifactFileDetail({
             <ArtifactFilePreview
               content={displayContent}
               language={language ?? "text"}
+              zoom={zoom}
             />
           )}
         {isCodeFile && viewMode === "code" && (
           <CodeEditor
             className="size-full resize-none rounded-none border-none"
             value={displayContent ?? ""}
+            zoom={zoom}
             readonly
           />
         )}
@@ -256,13 +271,20 @@ export function ArtifactFileDetail({
 export function ArtifactFilePreview({
   content,
   language,
+  zoom = 100,
 }: {
   content: string;
   language: string;
+  zoom?: number;
 }) {
+  const zoomScale = zoom / 100;
+
   if (language === "markdown") {
     return (
-      <div className={cn("size-full p-[20px]")}>
+      <div
+        className={cn("size-full p-[20px]")}
+        style={{ "--zoom-scale": zoomScale } as React.CSSProperties}
+      >
         <Streamdown
           className="size-full"
           {...streamdownPlugins}
@@ -280,8 +302,95 @@ export function ArtifactFilePreview({
         title="Artifact preview"
         srcDoc={content}
         sandbox="allow-scripts allow-forms"
+        style={{ zoom: zoomScale }}
       />
     );
   }
   return null;
 }
+
+// 缩放比例选项
+const ZOOM_LEVELS = [50, 60, 70, 80, 90, 100, 110, 120, 130, 150, 175, 200];
+
+export type ArtifactZoomSelectorProps = Omit<
+  HTMLAttributes<HTMLDivElement>,
+  "onChange"
+> & {
+  value?: number;
+  onChange?: (value: number) => void;
+};
+
+export const ArtifactZoomSelector = ({
+  value = 100,
+  onChange,
+  className,
+  ...props
+}: ArtifactZoomSelectorProps) => {
+  const handleZoomIn = () => {
+    const currentIndex = ZOOM_LEVELS.indexOf(value);
+    const nextValue = ZOOM_LEVELS[currentIndex + 1];
+    if (currentIndex < ZOOM_LEVELS.length - 1 && nextValue !== undefined) {
+      onChange?.(nextValue);
+    }
+  };
+
+  const handleZoomOut = () => {
+    const currentIndex = ZOOM_LEVELS.indexOf(value);
+    const prevValue = ZOOM_LEVELS[currentIndex - 1];
+    if (currentIndex > 0 && prevValue !== undefined) {
+      onChange?.(prevValue);
+    }
+  };
+
+  const canZoomIn = ZOOM_LEVELS.indexOf(value) < ZOOM_LEVELS.length - 1;
+  const canZoomOut = ZOOM_LEVELS.indexOf(value) > 0;
+
+  return (
+    <div
+      className={cn(
+        "inline-flex items-center gap-2 rounded-[10px] bg-white px-2 py-1 backdrop-blur-sm",
+        "border border-gray-200/50",
+        "dark:border-gray-700/50 dark:bg-gray-800/90",
+        className,
+      )}
+      {...props}
+    >
+      <button
+        type="button"
+        onClick={handleZoomIn}
+        disabled={!canZoomIn}
+        className={cn(
+          "flex h-6 w-6 items-center justify-center rounded transition-colors",
+          "text-gray-400 hover:bg-gray-100 hover:text-gray-600",
+          "disabled:cursor-not-allowed disabled:opacity-40 disabled:hover:bg-transparent",
+          "dark:text-gray-500 dark:hover:bg-gray-700 dark:hover:text-gray-300",
+        )}
+        aria-label="放大"
+      >
+        <ZoomIn className="h-3.5 w-3.5" />
+      </button>
+      <span
+        className={cn(
+          "min-w-[42px] text-center text-xs font-medium text-gray-600",
+          "dark:text-gray-300",
+        )}
+      >
+        {value}%
+      </span>
+      <button
+        type="button"
+        onClick={handleZoomOut}
+        disabled={!canZoomOut}
+        className={cn(
+          "flex h-6 w-6 items-center justify-center rounded transition-colors",
+          "text-gray-400 hover:bg-gray-100 hover:text-gray-600",
+          "disabled:cursor-not-allowed disabled:opacity-40 disabled:hover:bg-transparent",
+          "dark:text-gray-500 dark:hover:bg-gray-700 dark:hover:text-gray-300",
+        )}
+        aria-label="缩小"
+      >
+        <ZoomOut className="h-3.5 w-3.5" />
+      </button>
+    </div>
+  );
+};

frontend/src/components/workspace/code-editor.tsx

@@ -42,6 +42,7 @@ export function CodeEditor({
   disabled,
   autoFocus,
   settings,
+  zoom = 100,
 }: {
   className?: string;
   placeholder?: string;
@@ -50,6 +51,7 @@ export function CodeEditor({
   disabled?: boolean;
   autoFocus?: boolean;
   settings?: unknown;
+  zoom?: number;
 }) {
   const {
     thread: { isLoading },
@@ -69,13 +71,14 @@ export function CodeEditor({
       python(),
     ];
   }, []);
-
+  const zoomScale = zoom / 100;
   return (
     <div
       className={cn(
         "flex cursor-text flex-col overflow-hidden rounded-md",
         className,
       )}
+      style={{ "--zoom-scale": zoomScale } as React.CSSProperties}
     >
       {isLoading ? (
         <Textarea

frontend/src/styles/globals.css

@@ -414,25 +414,42 @@
 /* ========================================
    Streamdown Markdown Styles
    使用 data-streamdown 属性选择器统一定义
+   支持 zoom-scale CSS 变量进行缩放
    ======================================== */
+
+/* 缩放变量，默认为 1 (100%) */
+:root {
+  --zoom-scale: 1;
+}
+
 /* p标签没有标识data-streamdown，暂时只能这么写 */
 p {
-  font-size: 14px;
+  font-size: calc(14px * var(--zoom-scale));
 }
 
 /* 列表项 - 14px */
 [data-streamdown="list-item"] {
-  font-size: 14px;
+  font-size: calc(14px * var(--zoom-scale));
-  padding-top: 4px;
+  padding-top: calc(4px * var(--zoom-scale));
-  padding-bottom: 4px;
+  padding-bottom: calc(4px * var(--zoom-scale));
 }
-/* 一级标题 - 20px */
 
+/* 一级标题 - 20px */
 [data-streamdown="heading-1"] {
-  font-size: 20px;
+  font-size: calc(20px * var(--zoom-scale));
 }
+
 /* 二三级标题 - 16px */
 [data-streamdown="heading-2"],
 [data-streamdown="heading-3"] {
-  font-size: 16px;
+  font-size: calc(16px * var(--zoom-scale));
+}
+
+/* 二三级标题 - 16px */
+[data-streamdown="code-block"] pre {
+  font-size: calc(16px * var(--zoom-scale));
+}
+
+.cm-line {
+  font-size: calc(14px * var(--zoom-scale));
 }