问题描述
我已经为iOS的手势识别器做了很多工作，但是我现在正在OS X中进行工作，我迷路了.
I have done quite a bit with gesture recognizers for iOS, but I am now doing work in OS X, and I am lost.
我想复制Finder中存在的功能，在该功能中您可以用两根手指滑动(在魔术鼠标上)在目录树中来回/前进.
I want to duplicate the functionality that exists like in Finder where you can two-finger swipe (on your magic mouse) to go back/forward through a directory tree.
我有一个基于NSWindow的应用程序，看起来与Finder非常相似.在此之前，我已经使用过应用程序，因此您可以构建自己的手势识别器，因此我知道可以做到这一点，但是我看不到任何文档.
I have an NSWindow based app that looks very similar to Finder. I have used apps before that allows you to build your own gesture recognizers so I know it is possible to do it, but I don't see any documentation on it.
要实现这些手势我需要做什么?
What do I need to do to implement these gestures?
推荐答案
您可以阅读有关处理触控板事件.该系统可以检测到一些预定义的手势(滑动，旋转等)，或者您可以像在常规鼠标事件一样，沿着NSResponder链监听原始的触摸事件.
You can read about Handling Trackpad Events in the Cocoa Event Handling guide. The system can detect some pre-defined gestures (swipe, rotate, etc.) or you can listen to the raw touch events, which travel up the NSResponder chain, just like regular mouse events.
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