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91 lines
3.9 KiB
91 lines
3.9 KiB
// |
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// NVActivityIndicatorAnimationLineSpinFadeLoader.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 NVActivityIndicatorAnimationLineSpinFadeLoader: NVActivityIndicatorAnimationDelegate { |
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func setUpAnimation(in layer: CALayer, size: CGSize, color: UIColor) { |
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let lineSpacing: CGFloat = 2 |
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let lineSize = CGSize(width: (size.width - 4 * lineSpacing) / 5, height: (size.height - 2 * lineSpacing) / 3) |
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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 duration: CFTimeInterval = 1.2 |
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let beginTime = CACurrentMediaTime() |
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let beginTimes: [CFTimeInterval] = [0.12, 0.24, 0.36, 0.48, 0.6, 0.72, 0.84, 0.96] |
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let timingFunction = CAMediaTimingFunction(name: .easeInEaseOut) |
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// Animation |
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let animation = CAKeyframeAnimation(keyPath: "opacity") |
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animation.keyTimes = [0, 0.5, 1] |
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animation.timingFunctions = [timingFunction, timingFunction] |
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animation.values = [1, 0.3, 1] |
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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 lines |
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for i in 0 ..< 8 { |
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let line = lineAt(angle: CGFloat(Double.pi / 4 * Double(i)), |
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size: lineSize, |
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origin: CGPoint(x: x, y: y), |
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containerSize: size, |
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color: color) |
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animation.beginTime = beginTime + beginTimes[i] |
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line.add(animation, forKey: "animation") |
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layer.addSublayer(line) |
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} |
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} |
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func lineAt(angle: CGFloat, size: CGSize, origin: CGPoint, containerSize: CGSize, color: UIColor) -> CALayer { |
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let radius = containerSize.width / 2 - max(size.width, size.height) / 2 |
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let lineContainerSize = CGSize(width: max(size.width, size.height), height: max(size.width, size.height)) |
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let lineContainer = CALayer() |
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let lineContainerFrame = CGRect( |
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x: origin.x + radius * (cos(angle) + 1), |
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y: origin.y + radius * (sin(angle) + 1), |
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width: lineContainerSize.width, |
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height: lineContainerSize.height) |
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let line = NVActivityIndicatorShape.line.layerWith(size: size, color: color) |
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let lineFrame = CGRect( |
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x: (lineContainerSize.width - size.width) / 2, |
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y: (lineContainerSize.height - size.height) / 2, |
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width: size.width, |
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height: size.height) |
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lineContainer.frame = lineContainerFrame |
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line.frame = lineFrame |
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lineContainer.addSublayer(line) |
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lineContainer.sublayerTransform = CATransform3DMakeRotation(CGFloat(Double.pi / 2) + angle, 0, 0, 1) |
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return lineContainer |
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} |
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} |
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#endif
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