macOS应用中实现点击窗口全屏的最优方案

针对你的需求，最优方案是基于Quartz Event Services捕获全局鼠标点击事件，结合AppKit API定位目标窗口并触发全屏操作，核心逻辑如下：

关键步骤 #

• 扩展现有全局事件监听，新增鼠标左键点击捕获（需系统辅助功能权限）
• 通过点击坐标匹配对应窗口的windowNumber
• 定位目标窗口所属的应用实例，调用全屏切换接口

具体代码实现 #

1. 权限检查（必须前置） #

全局事件监听需要系统辅助功能权限，先添加权限校验：

import Cocoa
import Quartz

func checkAccessibilityPermission() -> Bool {
    let options: NSDictionary = [kAXTrustedCheckOptionPrompt.takeRetainedValue() as NSString: true]
    return AXIsProcessTrustedWithOptions(options)
}

2. 扩展事件Tap监听点击事件 #

在你现有鼠标移动监控的Event Tap基础上，修改事件掩码，加入鼠标左键点击事件：

class WindowObserver {
    private var eventTap: CFMachPort?
    
    func setupGlobalEventMonitoring() {
        guard checkAccessibilityPermission() else {
            print("请在系统设置中开启辅助功能权限")
            return
        }
        
        let eventMask = (1 << CGEventType.mouseMoved.rawValue) | (1 << CGEventType.leftMouseDown.rawValue)
        
        let callback: CGEventTapCallBack = { proxy, type, event, refcon in
            guard let refcon = refcon else { return nil }
            let observer = Unmanaged<WindowObserver>.fromOpaque(refcon).takeUnretainedValue()
            
            switch type {
            case .mouseMoved:
                // 保留你原有的鼠标悬停逻辑
                let point = CGEventGetLocation(event)
                observer.handleMouseHover(at: point)
            case .leftMouseDown:
                let point = CGEventGetLocation(event)
                observer.handleWindowClick(at: point)
            default:
                break
            }
            return event
        }
        
        eventTap = CGEventTapCreate(
            .cghidEventTap,
            .headInsertEventTap,
            .default,
            eventMask,
            callback,
            Unmanaged.passUnretained(self).toOpaque()
        )
        
        guard let tap = eventTap else { return }
        let runLoopSource = CFMachPortCreateRunLoopSource(kCFAllocatorDefault, tap, 0)
        CFRunLoopAddSource(CFRunLoopGetCurrent(), runLoopSource, .commonModes)
        CGEventTapEnable(tap, true)
    }
    
    // 你的原有鼠标悬停处理方法
    func handleMouseHover(at point: CGPoint) {
        // 原有的窗口信息打印逻辑
    }
}

3. 点击事件处理：定位窗口并触发全屏 #

实现handleWindowClick方法，通过点击坐标找到目标窗口，调用全屏接口：

extension WindowObserver {
    func handleWindowClick(at point: CGPoint) {
        guard let windowInfoList = CGWindowListCopyWindowInfo(.optionOnScreenOnly, kCGNullWindowID) as? [[String: Any]] else { return }
        
        for windowInfo in windowInfoList {
            guard let bounds = windowInfo[kCGWindowBounds as String] as? [String: CGFloat],
                  let windowNumber = windowInfo[kCGWindowNumber as String] as? CGWindowID,
                  let pid = windowInfo[kCGWindowOwnerPID as String] as? pid_t else { continue }
            
            let windowRect = CGRect(x: bounds["X"]!, y: bounds["Y"]!, width: bounds["Width"]!, height: bounds["Height"]!)
            // 转换坐标（Mac屏幕原点在左下角，Quartz事件坐标在左上角）
            let flippedPoint = CGPoint(x: point.x, y: NSScreen.main!.frame.height - point.y)
            
            if windowRect.contains(flippedPoint) {
                // 激活目标应用
                guard let app = NSRunningApplication(processIdentifier: pid) else { continue }
                app.activate(options: .activateIgnoringOtherApps)
                
                // 找到对应窗口并切换全屏状态
                if let window = app.windows.first(where: { $0.windowNumber == Int(windowNumber) }) {
                    window.toggleFullScreen(nil)
                }
                break
            }
        }
    }
}

注意事项 #

• 权限问题：首次运行会弹出辅助功能权限请求，需在「系统设置-隐私与安全性-辅助功能」中勾选你的应用
• 窗口兼容性：部分系统级弹窗、无标题窗口可能不支持全屏，可添加额外判断逻辑跳过这类窗口
• 性能优化：全局事件监听中尽量减少重复计算，避免影响系统流畅度

内容的提问来源于stack exchange，提问作者Josué H.