LONDON-IOS/Pods/Hero/Sources/Extensions/UIKit+Hero.swift

// The MIT License (MIT)
//
// Copyright (c) 2016 Luke Zhao <me@lkzhao.com>
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

import UIKit

private let parameterRegex = "(?:\\-?\\d+(\\.?\\d+)?)|\\w+"
private let modifiersRegex = "(\\w+)(?:\\(([^\\)]*)\\))?"

internal extension NSObject {
  func copyWithArchiver() -> Any? {
    return NSKeyedUnarchiver.unarchiveObject(with: NSKeyedArchiver.archivedData(withRootObject: self))!
  }
}

internal extension UIImage {
  class func imageWithView(view: UIView) -> UIImage {
    UIGraphicsBeginImageContextWithOptions(view.bounds.size, false, 0.0)
    view.drawHierarchy(in: view.bounds, afterScreenUpdates: true)
    let img = UIGraphicsGetImageFromCurrentImageContext()
    UIGraphicsEndImageContext()
    return img!
  }
}

internal extension UIColor {
  var components:(r:CGFloat, g: CGFloat, b: CGFloat, a: CGFloat) {
    var r: CGFloat = 0
    var g: CGFloat = 0
    var b: CGFloat = 0
    var a: CGFloat = 0
    getRed(&r, green: &g, blue: &b, alpha: &a)
    return (r, g, b, a)
  }
  var alphaComponent: CGFloat {
    return components.a
  }
}