Cocoa:区分输入设备/scrollWheel:作为鼠标滚轮和TrackPad [英] Cocoa: distinguish input device / scrollWheel: as mouse-scroll wheel and TrackPad

问题描述

我正在寻找一种方法来在 [NSResponder scrollWheel:] 中可靠地区分用户输入设备是否具有一维滚轮或二维轨迹板/magicMouse?

I am looking for a method to reliably distinguish within [NSResponder scrollWheel:] if the users input device has a one-dimensional scroll-wheel or a two dimensional trackPad/magicMouse?

首先，我想实现不同的行为.但是仅仅看一下 NSEvent 的 deltaX 会有点弱.有什么建议吗?

In the first I would like to implement a different behavior. But just taking a look on the deltaX of the NSEvent would be a little weak. Any suggestions?

推荐答案

您可以使用私有方法调用 [theEvent _scrollPhase] 来判断设备是否使用惯性滚动，这表明 Apple-提供的输入设备.(注意:如果用户禁用了惯性滚动，这将不起作用)

You can use the private method call [theEvent _scrollPhase] to tell whether the device is using inertial scrolling, which indicates an Apple-supplied input device. (Note: this won't work if the user has disabled inertial scrolling)

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