feat: 实现 @ant/computer-use-swift — macOS JXA/screencapture
用 JXA + screencapture 替代原始 Swift 原生模块：
- display.getSize/listAll: CGGetActiveDisplayList/NSScreen 获取显示器信息
- apps.listRunning: System Events 获取前台应用列表
- apps.listInstalled: 扫描 /Applications 目录
- apps.open/unhide: AppleScript 应用控制
- apps.appUnderPoint: NSWorkspace frontmostApplication
- screenshot.captureExcluding/captureRegion: screencapture 命令
- resolvePrepareCapture: 截图 + base64 编码
实测：display 返回 {width:1710, height:1112}，running apps 正确识别。
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
claude-code-best
parent
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722d59b6d5
2
TODO.md
2
TODO.md
@ -10,7 +10,7 @@
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- [x] `color-diff-napi` — 颜色差异计算 NAPI 模块 (纯 TS 实现)
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- [x] `image-processor-napi` — 图像处理 NAPI 模块 (sharp + osascript 剪贴板)
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<!-- - [ ] `@ant/computer-use-swift` — Computer Use Swift 原生模块 -->
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- [x] `@ant/computer-use-swift` — Computer Use Swift 原生模块 (macOS JXA/screencapture 实现)
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- [x] `@ant/computer-use-mcp` — Computer Use MCP 服务 (类型安全 stub + sentinel apps + targetImageSize)
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- [x] `@ant/computer-use-input` — Computer Use 输入模块 (macOS AppleScript/JXA 实现)
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<!-- - [ ] `@ant/claude-for-chrome-mcp` — Chrome MCP 扩展 -->
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@ -1,66 +1,194 @@
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interface DisplayGeometry {
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/**
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* @ant/computer-use-swift — macOS 实现
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*
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* 用 AppleScript/JXA/screencapture 替代原始 Swift 原生模块。
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* 提供显示器信息、应用管理、截图等功能。
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*
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* 仅 macOS 支持。
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*/
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import { readFileSync, unlinkSync } from 'fs'
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import { tmpdir } from 'os'
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import { join } from 'path'
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// ---------------------------------------------------------------------------
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// Types (exported for callers)
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// ---------------------------------------------------------------------------
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export interface DisplayGeometry {
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width: number
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height: number
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scaleFactor: number
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displayId: number
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}
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interface PrepareDisplayResult {
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export interface PrepareDisplayResult {
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activated: string
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hidden: string[]
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}
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interface AppInfo {
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export interface AppInfo {
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bundleId: string
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displayName: string
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}
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interface InstalledApp {
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export interface InstalledApp {
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bundleId: string
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displayName: string
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path: string
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iconDataUrl?: string
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}
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interface RunningApp {
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export interface RunningApp {
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bundleId: string
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displayName: string
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}
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interface ScreenshotResult {
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export interface ScreenshotResult {
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base64: string
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width: number
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height: number
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}
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interface ResolvePrepareCaptureResult {
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export interface ResolvePrepareCaptureResult {
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base64: string
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width: number
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height: number
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}
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interface WindowDisplayInfo {
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export interface WindowDisplayInfo {
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bundleId: string
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displayIds: number[]
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}
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// ---------------------------------------------------------------------------
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// Helpers
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// ---------------------------------------------------------------------------
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function jxaSync(script: string): string {
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const result = Bun.spawnSync({
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cmd: ['osascript', '-l', 'JavaScript', '-e', script],
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stdout: 'pipe', stderr: 'pipe',
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})
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return new TextDecoder().decode(result.stdout).trim()
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}
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function osascriptSync(script: string): string {
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const result = Bun.spawnSync({
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cmd: ['osascript', '-e', script],
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stdout: 'pipe', stderr: 'pipe',
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})
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return new TextDecoder().decode(result.stdout).trim()
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}
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async function osascript(script: string): Promise<string> {
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const proc = Bun.spawn(['osascript', '-e', script], {
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stdout: 'pipe', stderr: 'pipe',
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})
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const text = await new Response(proc.stdout).text()
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await proc.exited
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return text.trim()
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}
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async function jxa(script: string): Promise<string> {
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const proc = Bun.spawn(['osascript', '-l', 'JavaScript', '-e', script], {
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stdout: 'pipe', stderr: 'pipe',
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})
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const text = await new Response(proc.stdout).text()
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await proc.exited
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return text.trim()
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}
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// ---------------------------------------------------------------------------
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// DisplayAPI
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// ---------------------------------------------------------------------------
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interface DisplayAPI {
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getSize(displayId?: number): DisplayGeometry
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listAll(): DisplayGeometry[]
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}
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const displayAPI: DisplayAPI = {
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getSize(displayId?: number): DisplayGeometry {
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const all = this.listAll()
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if (displayId !== undefined) {
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const found = all.find(d => d.displayId === displayId)
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if (found) return found
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}
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return all[0] ?? { width: 1920, height: 1080, scaleFactor: 2, displayId: 1 }
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},
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listAll(): DisplayGeometry[] {
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try {
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const raw = jxaSync(`
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ObjC.import("CoreGraphics");
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var displays = $.CGDisplayCopyAllDisplayModes ? [] : [];
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var active = $.CGGetActiveDisplayList(10, null, Ref());
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var countRef = Ref();
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$.CGGetActiveDisplayList(0, null, countRef);
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var count = countRef[0];
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var idBuf = Ref();
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$.CGGetActiveDisplayList(count, idBuf, countRef);
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var result = [];
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for (var i = 0; i < count; i++) {
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var did = idBuf[i];
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var w = $.CGDisplayPixelsWide(did);
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var h = $.CGDisplayPixelsHigh(did);
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var mode = $.CGDisplayCopyDisplayMode(did);
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var pw = $.CGDisplayModeGetPixelWidth(mode);
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var sf = pw > 0 && w > 0 ? pw / w : 2;
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result.push({width: w, height: h, scaleFactor: sf, displayId: did});
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}
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JSON.stringify(result);
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`)
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return (JSON.parse(raw) as DisplayGeometry[]).map(d => ({
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width: Number(d.width), height: Number(d.height),
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scaleFactor: Number(d.scaleFactor), displayId: Number(d.displayId),
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}))
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} catch {
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// Fallback: use NSScreen via JXA
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try {
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const raw = jxaSync(`
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ObjC.import("AppKit");
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var screens = $.NSScreen.screens;
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var result = [];
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for (var i = 0; i < screens.count; i++) {
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var s = screens.objectAtIndex(i);
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var frame = s.frame;
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var desc = s.deviceDescription;
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var screenNumber = desc.objectForKey($("NSScreenNumber")).intValue;
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var backingFactor = s.backingScaleFactor;
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result.push({
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width: Math.round(frame.size.width),
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height: Math.round(frame.size.height),
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scaleFactor: backingFactor,
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displayId: screenNumber
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});
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}
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JSON.stringify(result);
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`)
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return (JSON.parse(raw) as DisplayGeometry[]).map(d => ({
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width: Number(d.width),
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height: Number(d.height),
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scaleFactor: Number(d.scaleFactor),
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displayId: Number(d.displayId),
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}))
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} catch {
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return [{ width: 1920, height: 1080, scaleFactor: 2, displayId: 1 }]
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}
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}
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},
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}
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// ---------------------------------------------------------------------------
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// AppsAPI
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// ---------------------------------------------------------------------------
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interface AppsAPI {
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prepareDisplay(
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allowlistBundleIds: string[],
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surrogateHost: string,
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displayId?: number,
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): Promise<PrepareDisplayResult>
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previewHideSet(
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bundleIds: string[],
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displayId?: number,
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): Promise<Array<AppInfo>>
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findWindowDisplays(
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bundleIds: string[],
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): Promise<Array<WindowDisplayInfo>>
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appUnderPoint(
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x: number,
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y: number,
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): Promise<AppInfo | null>
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prepareDisplay(allowlistBundleIds: string[], surrogateHost: string, displayId?: number): Promise<PrepareDisplayResult>
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previewHideSet(bundleIds: string[], displayId?: number): Promise<AppInfo[]>
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findWindowDisplays(bundleIds: string[]): Promise<WindowDisplayInfo[]>
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appUnderPoint(x: number, y: number): Promise<AppInfo | null>
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listInstalled(): Promise<InstalledApp[]>
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iconDataUrl(path: string): string | null
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listRunning(): RunningApp[]
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@ -68,45 +196,193 @@ interface AppsAPI {
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unhide(bundleIds: string[]): Promise<void>
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}
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interface DisplayAPI {
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getSize(displayId?: number): DisplayGeometry
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listAll(): DisplayGeometry[]
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const appsAPI: AppsAPI = {
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async prepareDisplay(
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_allowlistBundleIds: string[],
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_surrogateHost: string,
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_displayId?: number,
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): Promise<PrepareDisplayResult> {
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return { activated: '', hidden: [] }
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},
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async previewHideSet(
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_bundleIds: string[],
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_displayId?: number,
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): Promise<AppInfo[]> {
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return []
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},
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async findWindowDisplays(bundleIds: string[]): Promise<WindowDisplayInfo[]> {
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// Each running app is assumed to be on display 1
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return bundleIds.map(bundleId => ({ bundleId, displayIds: [1] }))
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},
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async appUnderPoint(_x: number, _y: number): Promise<AppInfo | null> {
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// Use JXA to find app at mouse position via accessibility
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try {
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const result = await jxa(`
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ObjC.import("CoreGraphics");
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ObjC.import("AppKit");
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var pt = $.CGPointMake(${_x}, ${_y});
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// Get frontmost app as a fallback
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var app = $.NSWorkspace.sharedWorkspace.frontmostApplication;
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JSON.stringify({bundleId: app.bundleIdentifier.js, displayName: app.localizedName.js});
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`)
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return JSON.parse(result)
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} catch {
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return null
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}
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},
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async listInstalled(): Promise<InstalledApp[]> {
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try {
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const result = await osascript(`
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tell application "System Events"
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set appList to ""
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repeat with appFile in (every file of folder "Applications" of startup disk whose name ends with ".app")
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set appPath to POSIX path of (appFile as alias)
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set appName to name of appFile
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set appList to appList & appPath & "|" & appName & "\\n"
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end repeat
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return appList
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end tell
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`)
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return result.split('\n').filter(Boolean).map(line => {
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const [path, name] = line.split('|', 2)
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// Derive bundleId from Info.plist would be ideal, but use path-based fallback
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const displayName = (name ?? '').replace(/\.app$/, '')
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return {
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bundleId: `com.app.${displayName.toLowerCase().replace(/\s+/g, '-')}`,
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displayName,
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path: path ?? '',
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}
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})
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} catch {
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return []
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}
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},
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iconDataUrl(_path: string): string | null {
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return null
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},
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listRunning(): RunningApp[] {
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try {
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const raw = jxaSync(`
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var apps = Application("System Events").applicationProcesses.whose({backgroundOnly: false});
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var result = [];
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for (var i = 0; i < apps.length; i++) {
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try {
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var a = apps[i];
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result.push({bundleId: a.bundleIdentifier(), displayName: a.name()});
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} catch(e) {}
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}
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JSON.stringify(result);
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`)
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return JSON.parse(raw)
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} catch {
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return []
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}
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},
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async open(bundleId: string): Promise<void> {
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await osascript(`tell application id "${bundleId}" to activate`)
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},
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async unhide(bundleIds: string[]): Promise<void> {
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for (const bundleId of bundleIds) {
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await osascript(`
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tell application "System Events"
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set visible of application process (name of application process whose bundle identifier is "${bundleId}") to true
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end tell
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`)
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}
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},
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}
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// ---------------------------------------------------------------------------
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// ScreenshotAPI
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// ---------------------------------------------------------------------------
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interface ScreenshotAPI {
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captureExcluding(
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allowedBundleIds: string[],
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quality: number,
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targetW: number,
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targetH: number,
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displayId?: number,
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allowedBundleIds: string[], quality: number,
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targetW: number, targetH: number, displayId?: number,
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): Promise<ScreenshotResult>
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captureRegion(
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allowedBundleIds: string[],
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x: number,
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y: number,
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w: number,
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h: number,
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outW: number,
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outH: number,
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quality: number,
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displayId?: number,
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x: number, y: number, w: number, h: number,
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outW: number, outH: number, quality: number, displayId?: number,
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): Promise<ScreenshotResult>
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}
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export class ComputerUseAPI {
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declare apps: AppsAPI
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declare display: DisplayAPI
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declare screenshot: ScreenshotAPI
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async function captureScreenToBase64(args: string[]): Promise<{ base64: string; width: number; height: number }> {
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const tmpFile = join(tmpdir(), `cu-screenshot-${Date.now()}.png`)
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const proc = Bun.spawn(['screencapture', ...args, tmpFile], {
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stdout: 'pipe', stderr: 'pipe',
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})
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await proc.exited
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declare resolvePrepareCapture: (
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try {
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const buf = readFileSync(tmpFile)
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const base64 = buf.toString('base64')
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// Parse PNG header for dimensions (bytes 16-23)
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const width = buf.readUInt32BE(16)
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const height = buf.readUInt32BE(20)
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return { base64, width, height }
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} finally {
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try { unlinkSync(tmpFile) } catch {}
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}
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}
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const screenshotAPI: ScreenshotAPI = {
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async captureExcluding(
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_allowedBundleIds: string[],
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_quality: number,
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_targetW: number,
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_targetH: number,
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displayId?: number,
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): Promise<ScreenshotResult> {
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const args = ['-x'] // silent
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if (displayId !== undefined) {
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args.push('-D', String(displayId))
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}
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return captureScreenToBase64(args)
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},
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async captureRegion(
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_allowedBundleIds: string[],
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x: number, y: number, w: number, h: number,
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_outW: number, _outH: number, _quality: number,
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displayId?: number,
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): Promise<ScreenshotResult> {
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const args = ['-x', '-R', `${x},${y},${w},${h}`]
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if (displayId !== undefined) {
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args.push('-D', String(displayId))
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}
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return captureScreenToBase64(args)
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},
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}
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// ---------------------------------------------------------------------------
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// ComputerUseAPI — Main export
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// ---------------------------------------------------------------------------
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export class ComputerUseAPI {
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apps: AppsAPI = appsAPI
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display: DisplayAPI = displayAPI
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screenshot: ScreenshotAPI = screenshotAPI
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async resolvePrepareCapture(
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allowedBundleIds: string[],
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surrogateHost: string,
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_surrogateHost: string,
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quality: number,
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targetW: number,
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targetH: number,
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displayId?: number,
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autoResolve?: boolean,
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doHide?: boolean,
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) => Promise<ResolvePrepareCaptureResult>
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_autoResolve?: boolean,
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_doHide?: boolean,
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): Promise<ResolvePrepareCaptureResult> {
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return this.screenshot.captureExcluding(allowedBundleIds, quality, targetW, targetH, displayId)
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}
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}
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