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How can I implement a NSTouchBar in using only Xcode Playgrounds? I realize that NSTouchBar, and its accompanying methods including makeTouchBar() are contained within the NSResponder class, which is the superclass of NSView, NSViewController, NSWindow, and SKView (a subclass of NSView.)

It is for this reason that I'm a little unsure how to approach access the TouchBar. There are so many subclasses of NSResponder I'm unsure as to which one is the correct one. And to my knowledge I cannot even access all of them, including the NSWindow for the Playground, which I suspect may be the one I need to access.

My current setup is:

let containerView = SKView()
PlaygroundPage.current.liveView = containerView
let containterScene = SKScene()
containerView.presentScene(containterScene)

And in checking the responder chain, for the SKView I get:

<SKScene> name:'(null)' frame:{{-250, -250}, {500, 500}} anchor:{0.5, 0.5}

And for the SKScene:

<SKView: 0x7fba36037a00>
<NSView: 0x7fba32d6fe80>
<PlaygroundViewBridgeService: 0x7fba32d569e0>
<NSNextStepFrame: 0x7fba32d76e20>
<NSWindow: 0x7fba32e177e0>

For some reason, the SKScene and SKView are not within the same chain, and I can't seem to access any responder higher than the SKView. Is there a way to extend the functionality of the already existing NSWindow?

Another problem is that many tutorials on using the TouchBar require access to the AppDelegate, which I don't think I have in Xcode Storyboards.

Any help implementing the TouchBar in Storyboards would be greatly appreciated.

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1 回答 1

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解决方案其实很简单。创建一个自定义子类NSViewController并在其中实现 TouchBar 覆盖功能。

然后实现上面的代码：

let containerView = CustomSKView()
let containterScene = CustomSKScene()
containerView.presentScene(containerScene)

有以下补充。

let containerViewController = CustomNSViewController()
containerViewController.view = containerView
PlaygroundPage.current.liveView = containerViewController.view

这会在响应者链中设置您的自定义NSViewController，使其能够处理 Touch Bar。也无需担心 App Delegate。

于 2017-04-05T02:24:26.447 回答