80 lines
2.6 KiB
Swift
80 lines
2.6 KiB
Swift
//
|
|
// Crawler.swift
|
|
// ProgressKit
|
|
//
|
|
// Created by Kauntey Suryawanshi on 11/07/15.
|
|
// Copyright (c) 2015 Kauntey Suryawanshi. All rights reserved.
|
|
//
|
|
|
|
import Foundation
|
|
import Cocoa
|
|
|
|
private let defaultForegroundColor = NSColor.whiteColor()
|
|
private let defaultBackgroundColor = NSColor(white: 0.0, alpha: 0.4)
|
|
private let duration = 1.2
|
|
|
|
@IBDesignable
|
|
public class Crawler: IndeterminateAnimation {
|
|
|
|
var starList = [CAShapeLayer]()
|
|
|
|
var smallCircleSize: Double {
|
|
return Double(self.bounds.width) * 0.2
|
|
}
|
|
|
|
var animationGroups = [CAAnimation]()
|
|
|
|
override func notifyViewRedesigned() {
|
|
super.notifyViewRedesigned()
|
|
for star in starList {
|
|
star.backgroundColor = foreground.CGColor
|
|
}
|
|
}
|
|
override func configureLayers() {
|
|
super.configureLayers()
|
|
let rect = self.bounds
|
|
let insetRect = NSInsetRect(rect, rect.width * 0.15, rect.width * 0.15)
|
|
|
|
for i in 0 ..< 5 {
|
|
let starShape = CAShapeLayer()
|
|
starList.append(starShape)
|
|
starShape.backgroundColor = foreground.CGColor
|
|
|
|
let circleWidth = smallCircleSize - Double(i) * 2
|
|
starShape.bounds = CGRect(x: 0, y: 0, width: circleWidth, height: circleWidth)
|
|
starShape.cornerRadius = CGFloat(circleWidth / 2)
|
|
starShape.position = CGPoint(x: rect.midX, y: rect.midY + insetRect.height / 2)
|
|
self.layer?.addSublayer(starShape)
|
|
|
|
let arcPath = NSBezierPath()
|
|
arcPath.appendBezierPathWithArcWithCenter(insetRect.mid, radius: insetRect.width / 2, startAngle: 90, endAngle: -360 + 90, clockwise: true)
|
|
|
|
let rotationAnimation = CAKeyframeAnimation(keyPath: "position")
|
|
rotationAnimation.path = arcPath.CGPath
|
|
rotationAnimation.timingFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseOut)
|
|
rotationAnimation.beginTime = (duration * 0.075) * Double(i)
|
|
rotationAnimation.calculationMode = kCAAnimationCubicPaced
|
|
|
|
let animationGroup = CAAnimationGroup()
|
|
animationGroup.animations = [rotationAnimation]
|
|
animationGroup.duration = duration
|
|
animationGroup.repeatCount = Float.infinity
|
|
animationGroups.append(animationGroup)
|
|
|
|
}
|
|
}
|
|
|
|
override func startAnimation() {
|
|
for (index, star) in starList.enumerate() {
|
|
star.addAnimation(animationGroups[index], forKey: "")
|
|
}
|
|
}
|
|
|
|
override func stopAnimation() {
|
|
for star in starList {
|
|
star.removeAllAnimations()
|
|
}
|
|
}
|
|
}
|
|
|