用swift手搓鼠标效果，方便录屏。

seekyou2008 · 发表于昨天 22:25

本帖最后由 seekyou2008 于 2026-5-20 22:28 编辑

之前剪demo发现鼠标效果太差了，于是用swift手搓了一个，参考了chrome模拟移动端界面里鼠标效果。整体看起来灰色加透明，还有一点放大镜的感觉。效果如下：

代码如下：

import Cocoa
import Foundation
import QuartzCore
class CursorOverlay: NSObject {
var cursorWindow: NSWindow!
var cursorLayer: CALayer!
let rectSize: CGFloat = 40.0 // 40x40 像素，大小非常克制、高级
override init() {
super.init()
setupCursorWindow()
setupEventMonitors()
}
func setupCursorWindow() {
let rect = NSRect(x: 0, y: 0, width: rectSize, height: rectSize)
cursorWindow = NSWindow(contentRect: rect,
styleMask: .borderless,
backing: .buffered,
defer: false)
cursorWindow.isOpaque = false
cursorWindow.backgroundColor = .clear
cursorWindow.level = .screenSaver
cursorWindow.ignoresMouseEvents = true
cursorWindow.hasShadow = false
let view = NSView(frame: rect)
view.wantsLayer = true
// 绘制完全体深空灰半透明圆圈
cursorLayer = CALayer()
cursorLayer.frame = rect
cursorLayer.anchorPoint = CGPoint(x: 0.5, y: 0.5) // 强制锁死动画锚点在正中心
// 颜色调教：比普通灰色更高级的深空灰 (rgba(80, 80, 80, 0.45))
cursorLayer.backgroundColor = NSColor(white: 0.31, alpha: 0.45).cgColor
cursorLayer.cornerRadius = rectSize / 2
// ✨ 新增：高光防爆边框 (1.5 像素宽，稍微亮一点的半透明灰)
cursorLayer.borderWidth = 1.5
cursorLayer.borderColor = NSColor(white: 0.5, alpha: 0.4).cgColor
view.layer?.addSublayer(cursorLayer)
cursorWindow.contentView = view
cursorWindow.makeKeyAndOrderFront(nil)
updateCursorPosition()
}
func setupEventMonitors() {
NSEvent.addGlobalMonitorForEvents(matching: [.mouseMoved, .leftMouseDragged]) { [weak self] _ in self?.updateCursorPosition() }
NSEvent.addLocalMonitorForEvents(matching: [.mouseMoved, .leftMouseDragged]) { [weak self] event in
self?.updateCursorPosition()
return event
}
NSEvent.addGlobalMonitorForEvents(matching: [.leftMouseDown]) { [weak self] _ in self?.animateDown() }
NSEvent.addLocalMonitorForEvents(matching: [.leftMouseDown]) { [weak self] event in
self?.animateDown()
return event
}
NSEvent.addGlobalMonitorForEvents(matching: [.leftMouseUp]) { [weak self] _ in self?.animateUp() }
NSEvent.addLocalMonitorForEvents(matching: [.leftMouseUp]) { [weak self] event in
self?.animateUp()
return event
}
}
func updateCursorPosition() {
let mouseLoc = NSEvent.mouseLocation
DispatchQueue.main.async {
// 减去 rectSize/2 (也就是 20 像素)，确保物理鼠标的那个“尖尖”死死顶在圆圈的正中央
self.cursorWindow.setFrameOrigin(NSPoint(x: mouseLoc.x - self.rectSize/2, y: mouseLoc.y - self.rectSize/2))
}
}
func animateDown() {
DispatchQueue.main.async {
CATransaction.begin()
CATransaction.setAnimationDuration(0.10) // 极致流畅的 100ms 快速下蹲
self.cursorLayer.transform = CATransform3DMakeScale(0.78, 0.78, 1.0)
self.cursorLayer.backgroundColor = NSColor(white: 0.22, alpha: 0.70).cgColor // 点击时圆圈质感变深沉
CATransaction.commit()
}
}
func animateUp() {
DispatchQueue.main.async {
CATransaction.begin()
CATransaction.setAnimationDuration(0.16) // Q 弹回弹
self.cursorLayer.transform = CATransform3DIdentity
self.cursorLayer.backgroundColor = NSColor(white: 0.31, alpha: 0.45).cgColor // 恢复原状
CATransaction.commit()
}
}
}
let app = NSApplication.shared
app.setActivationPolicy(.prohibited)
let overlay = CursorOverlay()
app.run()

复制代码

swiftc main.swift -o TouchCastVisual && ./TouchCastVisual

复制代码

本来想贴在 Swift开发版块的，进不了，就贴这里吧。

auyach168 · 发表于昨天 23:19

牛哈加油

li0419 · 发表于昨天 23:55

加油

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[原创] 用swift手搓鼠标效果，方便录屏。