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78 lines
3.1 KiB
78 lines
3.1 KiB
// |
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// NVActivityIndicatorAnimationBallScaleRippleMultiple.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 NVActivityIndicatorAnimationBallScaleRippleMultiple: NVActivityIndicatorAnimationDelegate { |
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func setUpAnimation(in layer: CALayer, size: CGSize, color: UIColor) { |
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let duration: CFTimeInterval = 1.25 |
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let beginTime = CACurrentMediaTime() |
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let beginTimes = [0, 0.2, 0.4] |
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let timingFunction = CAMediaTimingFunction(controlPoints: 0.21, 0.53, 0.56, 0.8) |
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// Scale animation |
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let scaleAnimation = CAKeyframeAnimation(keyPath: "transform.scale") |
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scaleAnimation.keyTimes = [0, 0.7] |
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scaleAnimation.timingFunction = timingFunction |
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scaleAnimation.values = [0, 1] |
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scaleAnimation.duration = duration |
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// Opacity animation |
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let opacityAnimation = CAKeyframeAnimation(keyPath: "opacity") |
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opacityAnimation.keyTimes = [0, 0.7, 1] |
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opacityAnimation.timingFunctions = [timingFunction, timingFunction] |
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opacityAnimation.values = [1, 0.7, 0] |
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opacityAnimation.duration = duration |
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// Animation |
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let animation = CAAnimationGroup() |
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animation.animations = [scaleAnimation, opacityAnimation] |
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animation.duration = duration |
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animation.repeatCount = HUGE |
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animation.isRemovedOnCompletion = false |
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// Draw circles |
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for i in 0 ..< 3 { |
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let circle = NVActivityIndicatorShape.ring.layerWith(size: size, color: color) |
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let frame = CGRect(x: (layer.bounds.size.width - size.width) / 2, |
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y: (layer.bounds.size.height - size.height) / 2, |
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width: size.width, |
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height: size.height) |
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animation.beginTime = beginTime + beginTimes[i] |
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circle.frame = frame |
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circle.add(animation, forKey: "animation") |
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layer.addSublayer(circle) |
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} |
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} |
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} |
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#endif
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