macOS 模拟触摸板向下滑动
血衫非弧の一存发表于 2024-10-10 00:00:00
今天需要在 macOS 上模拟触控板滑动事件，并且希望模拟自然的人类手势，即速度由慢到快。用 Swift 来实现，并控制滑动的时间间隔，目标是每隔 4 到 8 秒执行一次向下滑动的操作，滑动时速度逐步加快。简单记录一下：
import Foundation
import CoreGraphics
func simulateAcceleratingScrollDown() {
let totalSteps = 25
let initialScrollAmount: Int32 = -5
let maxScrollAmount: Int32 = -25
let initialDelay: TimeInterval = 0.1
let minDelay: TimeInterval = 0.02
for step in 1...totalSteps {
let scrollAmount = initialScrollAmount + (Int32(step) * (maxScrollAmount - initialScrollAmount) / Int32(totalSteps))
let currentDelay = initialDelay - (initialDelay - minDelay) * Double(step) / Double(totalSteps)
let scrollEvent = CGEvent(scrollWheelEvent2Source: nil, units: .pixel, wheelCount: 1, wheel1: scrollAmount, wheel2: 0, wheel3: 0)
scrollEvent?.post(tap: .cghidEventTap)
Thread.sleep(forTimeInterval: currentDelay)
}
}
func randomInterval() -> TimeInterval {
return TimeInterval(arc4random_uniform(5) + 4)
}
func startRandomScrolling() {
let interval = randomInterval()
Timer.scheduledTimer(withTimeInterval: interval, repeats: false) { _ in
simulateAcceleratingScrollDown()
startRandomScrolling()
}
}
RunLoop.current.run()
解释：
- simulateAcceleratingScrollDown(): 模拟触控板的滑动动作，滚动步数由慢到快，每步滚动的像素量逐渐增加，延时逐渐缩短。
- randomInterval(): 生成 4 到 8 秒的随机时间间隔。
- startRandomScrolling(): 定时器每次等待随机时间后调用滑动事件，并继续递归调用。