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75 lines
3.2 KiB
75 lines
3.2 KiB
// |
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// NVActivityIndicatorAnimationCircleStrokeSpin.swift |
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// NVActivityIndicatorView |
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// |
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// The MIT License (MIT) |
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// Copyright (c) 2016 Vinh Nguyen |
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// Permission is hereby granted, free of charge, to any person obtaining a copy |
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// of this software and associated documentation files (the "Software"), to deal |
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// in the Software without restriction, including without limitation the rights |
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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// copies of the Software, and to permit persons to whom the Software is |
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// furnished to do so, subject to the following conditions: |
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// The above copyright notice and this permission notice shall be included in all |
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// copies or substantial portions of the Software. |
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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// SOFTWARE. |
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// |
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#if canImport(UIKit) |
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import UIKit |
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class NVActivityIndicatorAnimationCircleStrokeSpin: NVActivityIndicatorAnimationDelegate { |
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func setUpAnimation(in layer: CALayer, size: CGSize, color: UIColor) { |
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let beginTime: Double = 0.5 |
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let strokeStartDuration: Double = 1.2 |
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let strokeEndDuration: Double = 0.7 |
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let rotationAnimation = CABasicAnimation(keyPath: "transform.rotation") |
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rotationAnimation.byValue = Float.pi * 2 |
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rotationAnimation.timingFunction = CAMediaTimingFunction(name: .linear) |
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let strokeEndAnimation = CABasicAnimation(keyPath: "strokeEnd") |
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strokeEndAnimation.duration = strokeEndDuration |
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strokeEndAnimation.timingFunction = CAMediaTimingFunction(controlPoints: 0.4, 0.0, 0.2, 1.0) |
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strokeEndAnimation.fromValue = 0 |
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strokeEndAnimation.toValue = 1 |
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let strokeStartAnimation = CABasicAnimation(keyPath: "strokeStart") |
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strokeStartAnimation.duration = strokeStartDuration |
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strokeStartAnimation.timingFunction = CAMediaTimingFunction(controlPoints: 0.4, 0.0, 0.2, 1.0) |
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strokeStartAnimation.fromValue = 0 |
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strokeStartAnimation.toValue = 1 |
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strokeStartAnimation.beginTime = beginTime |
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let groupAnimation = CAAnimationGroup() |
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groupAnimation.animations = [rotationAnimation, strokeEndAnimation, strokeStartAnimation] |
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groupAnimation.duration = strokeStartDuration + beginTime |
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groupAnimation.repeatCount = .infinity |
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groupAnimation.isRemovedOnCompletion = false |
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groupAnimation.fillMode = .forwards |
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let circle = NVActivityIndicatorShape.stroke.layerWith(size: size, color: color) |
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let frame = CGRect( |
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x: (layer.bounds.width - size.width) / 2, |
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y: (layer.bounds.height - size.height) / 2, |
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width: size.width, |
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height: size.height |
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) |
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circle.frame = frame |
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circle.add(groupAnimation, forKey: "animation") |
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layer.addSublayer(circle) |
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} |
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} |
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#endif
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