Add 'submodules/AsyncDisplayKit/' from commit '02bedc12816e251ad71777f9d2578329b6d2bef6'

git-subtree-dir: submodules/AsyncDisplayKit
git-subtree-mainline: d06f423e0e
git-subtree-split: 02bedc1281

submodules/AsyncDisplayKit/examples/LayoutSpecExamples-Swift/Sample/Utilities.swift

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+//
+//  Utilities.swift
+//  Texture
+//
+//  Copyright (c) Facebook, Inc. and its affiliates.  All rights reserved.
+//  Changes after 4/13/2017 are: Copyright (c) Pinterest, Inc.  All rights reserved.
+//  Licensed under Apache 2.0: http://www.apache.org/licenses/LICENSE-2.0
+//
+
+import UIKit
+import Foundation
+
+extension UIColor {
+
+  static func darkBlueColor() -> UIColor {
+    return UIColor(red: 18.0/255.0, green: 86.0/255.0, blue: 136.0/255.0, alpha: 1.0)
+  }
+
+  static func lightBlueColor() -> UIColor {
+    return UIColor(red: 0.0, green: 122.0/255.0, blue: 1.0, alpha: 1.0)
+  }
+
+  static func duskColor() -> UIColor {
+    return UIColor(red: 255/255.0, green: 181/255.0, blue: 68/255.0, alpha: 1.0)
+  }
+
+  static func customOrangeColor() -> UIColor {
+    return UIColor(red: 40/255.0, green: 43/255.0, blue: 53/255.0, alpha: 1.0)
+  }
+
+}
+
+extension UIImage {
+
+  func makeCircularImage(size: CGSize, borderWidth width: CGFloat) -> UIImage {
+    // make a CGRect with the image's size
+    let circleRect = CGRect(origin: .zero, size: size)
+
+    // begin the image context since we're not in a drawRect:
+    UIGraphicsBeginImageContextWithOptions(circleRect.size, false, 0)
+
+    // create a UIBezierPath circle
+    let circle = UIBezierPath(roundedRect: circleRect, cornerRadius: circleRect.size.width * 0.5)
+
+    // clip to the circle
+    circle.addClip()
+
+    UIColor.white.set()
+    circle.fill()
+
+    // draw the image in the circleRect *AFTER* the context is clipped
+    self.draw(in: circleRect)
+
+    // create a border (for white background pictures)
+    if width > 0 {
+      circle.lineWidth = width;
+      UIColor.white.set()
+      circle.stroke()
+    }
+
+    // get an image from the image context
+    let roundedImage = UIGraphicsGetImageFromCurrentImageContext();
+
+    // end the image context since we're not in a drawRect:
+    UIGraphicsEndImageContext();
+
+    return roundedImage ?? self
+  }
+  
+  class func draw(size: CGSize, fillColor: UIColor, shapeClosure: () -> UIBezierPath) -> UIImage {
+    UIGraphicsBeginImageContext(size)
+    
+    let path = shapeClosure()
+    path.addClip()
+    
+    fillColor.setFill()
+    path.fill()
+    
+    let image = UIGraphicsGetImageFromCurrentImageContext()
+    UIGraphicsEndImageContext()
+    
+    return image!
+  }
+}
+
+extension NSAttributedString {
+
+  static func attributedString(string: String?, fontSize size: CGFloat, color: UIColor?) -> NSAttributedString? {
+    guard let string = string else { return nil }
+
+    let attributes = [NSForegroundColorAttributeName: color ?? UIColor.black,
+                      NSFontAttributeName: UIFont.boldSystemFont(ofSize: size)]
+
+    let attributedString = NSMutableAttributedString(string: string, attributes: attributes)
+
+    return attributedString
+  }
+  
+}