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71 lines
3.0 KiB
71 lines
3.0 KiB
1 year ago
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// NVActivityIndicatorAnimationBallGridBeat.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 NVActivityIndicatorAnimationBallGridBeat: NVActivityIndicatorAnimationDelegate {
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func setUpAnimation(in layer: CALayer, size: CGSize, color: UIColor) {
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let circleSpacing: CGFloat = 2
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let circleSize = (size.width - circleSpacing * 2) / 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 durations = [0.96, 0.93, 1.19, 1.13, 1.34, 0.94, 1.2, 0.82, 1.19]
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let beginTime = CACurrentMediaTime()
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let beginTimes = [0.36, 0.4, 0.68, 0.41, 0.71, -0.15, -0.12, 0.01, 0.32]
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let timingFunction = CAMediaTimingFunction(name: .default)
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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, 0.7, 1]
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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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for j in 0 ..< 3 {
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let circle = NVActivityIndicatorShape.circle.layerWith(size: CGSize(width: circleSize, height: circleSize), color: color)
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let frame = CGRect(x: x + circleSize * CGFloat(j) + circleSpacing * CGFloat(j),
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y: y + circleSize * CGFloat(i) + circleSpacing * CGFloat(i),
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width: circleSize,
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height: circleSize)
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animation.duration = durations[3 * i + j]
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animation.beginTime = beginTime + beginTimes[3 * i + j]
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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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}
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#endif
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