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84 lines
3.7 KiB
84 lines
3.7 KiB
// |
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// NVActivityIndicatorAnimationBallRotate.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 NVActivityIndicatorAnimationBallRotate: NVActivityIndicatorAnimationDelegate { |
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func setUpAnimation(in layer: CALayer, size: CGSize, color: UIColor) { |
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let circleSize: CGFloat = size.width / 5 |
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let duration: CFTimeInterval = 1 |
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let timingFunction = CAMediaTimingFunction(controlPoints: 0.7, -0.13, 0.22, 0.86) |
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// Scale animation |
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let scaleAnimation = CAKeyframeAnimation(keyPath: "transform.scale") |
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scaleAnimation.keyTimes = [0, 0.5, 1] |
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scaleAnimation.timingFunctions = [timingFunction, timingFunction] |
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scaleAnimation.values = [1, 0.6, 1] |
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scaleAnimation.duration = duration |
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// Rotate animation |
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let rotateAnimation = CAKeyframeAnimation(keyPath: "transform.rotation.z") |
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rotateAnimation.keyTimes = [0, 0.5, 1] |
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rotateAnimation.timingFunctions = [timingFunction, timingFunction] |
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rotateAnimation.values = [0, Double.pi, 2 * Double.pi] |
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rotateAnimation.duration = duration |
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// Animation |
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let animation = CAAnimationGroup() |
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animation.animations = [scaleAnimation, rotateAnimation] |
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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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let leftCircle = NVActivityIndicatorShape.circle.layerWith(size: CGSize(width: circleSize, height: circleSize), color: color) |
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let rightCircle = NVActivityIndicatorShape.circle.layerWith(size: CGSize(width: circleSize, height: circleSize), color: color) |
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let centerCircle = NVActivityIndicatorShape.circle.layerWith(size: CGSize(width: circleSize, height: circleSize), color: color) |
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leftCircle.opacity = 0.8 |
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leftCircle.frame = CGRect(x: 0, y: (size.height - circleSize) / 2, width: circleSize, height: circleSize) |
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rightCircle.opacity = 0.8 |
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rightCircle.frame = CGRect(x: size.width - circleSize, y: (size.height - circleSize) / 2, width: circleSize, height: circleSize) |
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centerCircle.frame = CGRect(x: (size.width - circleSize) / 2, y: (size.height - circleSize) / 2, width: circleSize, height: circleSize) |
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let circle = CALayer() |
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let frame = CGRect(x: (layer.bounds.size.width - size.width) / 2, y: (layer.bounds.size.height - size.height) / 2, width: size.width, height: size.height) |
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circle.frame = frame |
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circle.addSublayer(leftCircle) |
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circle.addSublayer(rightCircle) |
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circle.addSublayer(centerCircle) |
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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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#endif
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