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65 lines
2.6 KiB
65 lines
2.6 KiB
1 year ago
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// NVActivityIndicatorAnimationBarScale.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 NVActivityIndicatorAnimationLineScale: NVActivityIndicatorAnimationDelegate {
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func setUpAnimation(in layer: CALayer, size: CGSize, color: UIColor) {
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let lineSize = size.width / 9
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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
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let beginTime = CACurrentMediaTime()
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let beginTimes = [0.1, 0.2, 0.3, 0.4, 0.5]
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let timingFunction = CAMediaTimingFunction(controlPoints: 0.2, 0.68, 0.18, 1.08)
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// Animation
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let animation = CAKeyframeAnimation(keyPath: "transform.scale.y")
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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, 0.4, 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 ..< 5 {
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let line = NVActivityIndicatorShape.line.layerWith(size: CGSize(width: lineSize, height: size.height), color: color)
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let frame = CGRect(x: x + lineSize * 2 * CGFloat(i), y: y, width: lineSize, height: size.height)
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animation.beginTime = beginTime + beginTimes[i]
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line.frame = frame
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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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}
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#endif
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