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// |
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// NVActivityIndicatorAnimationCubeTransition.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 NVActivityIndicatorAnimationCubeTransition: NVActivityIndicatorAnimationDelegate { |
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func setUpAnimation(in layer: CALayer, size: CGSize, color: UIColor) { |
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let squareSize = size.width / 5 |
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let x = (layer.bounds.size.width - size.width) / 2 |
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let y = (layer.bounds.size.height - size.height) / 2 |
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let deltaX = size.width - squareSize |
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let deltaY = size.height - squareSize |
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let duration: CFTimeInterval = 1.6 |
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let beginTime = CACurrentMediaTime() |
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let beginTimes: [CFTimeInterval] = [0, -0.8] |
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let timingFunction = CAMediaTimingFunction(name: .easeInEaseOut) |
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// Scale animation |
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let scaleAnimation = CAKeyframeAnimation(keyPath: "transform.scale") |
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scaleAnimation.keyTimes = [0, 0.25, 0.5, 0.75, 1] |
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scaleAnimation.timingFunctions = [timingFunction, timingFunction, timingFunction, timingFunction] |
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scaleAnimation.values = [1, 0.5, 1, 0.5, 1] |
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scaleAnimation.duration = duration |
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// Translate animation |
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let translateAnimation = CAKeyframeAnimation(keyPath: "transform.translation") |
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translateAnimation.keyTimes = scaleAnimation.keyTimes |
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translateAnimation.timingFunctions = scaleAnimation.timingFunctions |
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translateAnimation.values = [ |
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NSValue(cgSize: CGSize(width: 0, height: 0)), |
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NSValue(cgSize: CGSize(width: deltaX, height: 0)), |
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NSValue(cgSize: CGSize(width: deltaX, height: deltaY)), |
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NSValue(cgSize: CGSize(width: 0, height: deltaY)), |
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NSValue(cgSize: CGSize(width: 0, height: 0)) |
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] |
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translateAnimation.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 = scaleAnimation.keyTimes |
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rotateAnimation.timingFunctions = scaleAnimation.timingFunctions |
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rotateAnimation.values = [0, -Double.pi / 2, -Double.pi, -1.5 * 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, translateAnimation, 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 squares |
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for i in 0 ..< 2 { |
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let square = NVActivityIndicatorShape.rectangle.layerWith(size: CGSize(width: squareSize, height: squareSize), color: color) |
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let frame = CGRect(x: x, y: y, width: squareSize, height: squareSize) |
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animation.beginTime = beginTime + beginTimes[i] |
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square.frame = frame |
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square.add(animation, forKey: "animation") |
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layer.addSublayer(square) |
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} |
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} |
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} |
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#endif
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