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83 lines
3.7 KiB
Swift
Executable File
83 lines
3.7 KiB
Swift
Executable File
//
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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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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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