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CustomButton is vendored
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,135 @@ | ||
| import Cocoa | ||
|
|
||
| /** | ||
| Convenience class for adding a tracking area to a view. | ||
| ``` | ||
| final class HoverView: NSView { | ||
| private lazy var trackingArea = TrackingArea( | ||
| for: self, | ||
| options: [ | ||
| .mouseEnteredAndExited, | ||
| .activeInActiveApp | ||
| ] | ||
| ) | ||
| override func updateTrackingAreas() { | ||
| super.updateTrackingAreas() | ||
| trackingArea.update() | ||
| } | ||
| } | ||
| ``` | ||
| */ | ||
| final class TrackingArea { | ||
| private weak var view: NSView? | ||
| private let rect: CGRect | ||
| private let options: NSTrackingArea.Options | ||
| private var trackingArea: NSTrackingArea? | ||
|
|
||
| /** | ||
| - Parameters: | ||
| - view: The view to add tracking to. | ||
| - rect: The area inside the view to track. Defaults to the whole view (`view.bounds`). | ||
| */ | ||
| init( | ||
| for view: NSView, | ||
| rect: CGRect? = nil, | ||
| options: NSTrackingArea.Options = [] | ||
| ) { | ||
| self.view = view | ||
| self.rect = rect ?? view.bounds | ||
| self.options = options | ||
| } | ||
|
|
||
| /** | ||
| Updates the tracking area. | ||
| - Note: This should be called in your `NSView#updateTrackingAreas()` method. | ||
| */ | ||
| func update() { | ||
| if let oldTrackingArea = trackingArea { | ||
| view?.removeTrackingArea(oldTrackingArea) | ||
| } | ||
|
|
||
| let newTrackingArea = NSTrackingArea( | ||
| rect: rect, | ||
| options: [ | ||
| .mouseEnteredAndExited, | ||
| .activeInActiveApp | ||
| ], | ||
| owner: view, | ||
| userInfo: nil | ||
| ) | ||
|
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| view?.addTrackingArea(newTrackingArea) | ||
| trackingArea = newTrackingArea | ||
| } | ||
| } | ||
|
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|
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| final class AnimationDelegate: NSObject, CAAnimationDelegate { | ||
| var didStopHandler: ((Bool) -> Void)? | ||
|
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| func animationDidStop(_ animation: CAAnimation, finished flag: Bool) { | ||
| didStopHandler?(flag) | ||
| } | ||
| } | ||
|
|
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| extension CALayer { | ||
| // TODO: Find a way to use a strongly-typed KeyPath here. | ||
| // TODO: Accept `NSColor` instead of `CGColor`. | ||
| func animate(color: CGColor, keyPath: String, duration: Double) { | ||
| guard (value(forKey: keyPath) as! CGColor?) != color else { | ||
| return | ||
| } | ||
|
|
||
| let animation = CABasicAnimation(keyPath: keyPath) | ||
| animation.fromValue = value(forKey: keyPath) | ||
| animation.toValue = color | ||
| animation.duration = duration | ||
| animation.fillMode = .forwards | ||
| animation.isRemovedOnCompletion = false | ||
| add(animation, forKey: keyPath) { [weak self] _ in | ||
| self?.setValue(color, forKey: keyPath) | ||
| } | ||
| } | ||
|
|
||
| func add( | ||
| _ animation: CAAnimation, | ||
| forKey key: String?, | ||
| completion: @escaping ((Bool) -> Void) | ||
| ) { | ||
| let animationDelegate = AnimationDelegate() | ||
| animationDelegate.didStopHandler = completion | ||
| animation.delegate = animationDelegate | ||
| add(animation, forKey: key) | ||
| } | ||
| } | ||
|
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||
|
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| extension CGPoint { | ||
| func rounded(_ rule: FloatingPointRoundingRule = .toNearestOrAwayFromZero) -> Self { | ||
| Self(x: x.rounded(rule), y: y.rounded(rule)) | ||
| } | ||
| } | ||
|
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||
|
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| extension CGRect { | ||
| func roundedOrigin(_ rule: FloatingPointRoundingRule = .toNearestOrAwayFromZero) -> Self { | ||
| var rect = self | ||
| rect.origin = rect.origin.rounded(rule) | ||
| return rect | ||
| } | ||
| } | ||
|
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|
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| extension CGSize { | ||
| /// Returns a CGRect with `self` centered in it. | ||
| func centered(in rect: CGRect) -> CGRect { | ||
| CGRect( | ||
| x: (rect.width - width) / 2, | ||
| y: (rect.height - height) / 2, | ||
| width: width, | ||
| height: height | ||
| ) | ||
| } | ||
| } |
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