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Use custom zoom control as an example
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,104 @@ | ||
| import UIKit | ||
| import PlatformSDK | ||
|
|
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| /// Блок управления масштабом карты. | ||
| public final class CustomZoomControl: UIControl { | ||
| public static override var requiresConstraintBasedLayout: Bool { true } | ||
| private let stack: UIStackView | ||
|
|
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| init(map: Map) { | ||
| let model = createZoomControlModel(map: map) | ||
|
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| let zoomIn = ZoomButton(model: model, direction: .zoomIn) | ||
| let zoomInImage = UIImage(systemName: "plus.magnifyingglass") | ||
| zoomIn.setImage(zoomInImage, for: .normal) | ||
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| let zoomOut = ZoomButton(model: model, direction: .zoomOut) | ||
| let zoomOutImage = UIImage(systemName: "minus.magnifyingglass") | ||
| zoomOut.setImage(zoomOutImage, for: .normal) | ||
|
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| self.stack = UIStackView(arrangedSubviews: [zoomIn, zoomOut]) | ||
| self.stack.distribution = .fillEqually | ||
| self.stack.alignment = .fill | ||
| self.stack.axis = .vertical | ||
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| super.init(frame: .zero) | ||
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| self.addSubview(self.stack) | ||
| } | ||
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| @available(*, unavailable) | ||
| required init?(coder: NSCoder) { | ||
| fatalError("Use init(map:)") | ||
| } | ||
|
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| public override func layoutSubviews() { | ||
| super.layoutSubviews() | ||
| self.stack.frame = self.bounds | ||
| } | ||
| } | ||
|
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| private final class ZoomButton: UIButton { | ||
| private let model: ZoomControlModel | ||
| private let direction: ZoomControlButton | ||
| private var connection: ICancellable = NoopCancellable() | ||
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| init(model: ZoomControlModel, direction: ZoomControlButton) { | ||
| self.model = model | ||
| self.direction = direction | ||
|
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| super.init(frame: .zero) | ||
|
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| self.contentVerticalAlignment = .fill | ||
| self.contentHorizontalAlignment = .fill | ||
|
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| self.addTarget( | ||
| self, | ||
| action: #selector(self.startZoom), | ||
| for: .touchDown | ||
| ) | ||
| self.addTarget( | ||
| self, | ||
| action: #selector(self.stopZoom), | ||
| for: [.touchCancel, .touchUpInside, .touchUpOutside] | ||
| ) | ||
|
|
||
| // Реагируем на отключение действия — выключаем кнопку. | ||
| // Такое возможно при достижении предела изменения масштаба. | ||
| self.connection = self.model.isEnabled(button: self.direction).sink { | ||
| [weak self] isEnabled in | ||
| DispatchQueue.main.async { | ||
| self?.isEnabled = isEnabled | ||
| } | ||
| } | ||
| } | ||
|
|
||
| @available(*, unavailable) | ||
| required init?(coder: NSCoder) { | ||
| fatalError("init(coder:) has not been implemented") | ||
| } | ||
|
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| @objc private func startZoom() { | ||
| UIView.animate( | ||
| withDuration: 0.25, | ||
| delay: 0, | ||
| usingSpringWithDamping: 1, | ||
| initialSpringVelocity: 5, | ||
| animations: { | ||
| self.transform = CGAffineTransform(scaleX: 1.2, y: 1.2) | ||
| }) | ||
| self.model.setPressed(button: self.direction, value: true) | ||
| } | ||
|
|
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| @objc private func stopZoom() { | ||
| UIView.animate( | ||
| withDuration: 0.25, | ||
| delay: 0, | ||
| usingSpringWithDamping: 0.5, | ||
| initialSpringVelocity: 5, | ||
| animations: { | ||
| self.transform = CGAffineTransform.identity | ||
| }) | ||
| self.model.setPressed(button: self.direction, value: false) | ||
| } | ||
| } |
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