Channel statistics improvements

submodules/GraphUI/Sources/UIView+Extensions.swift

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+//
+//  UIView+Extensions.swift
+//  GraphTest
+//
+//  Created by Andrei Salavei on 4/10/19.
+//  Copyright © 2019 Andrei Salavei. All rights reserved.
+//
+
+import UIKit
+
+extension UIView {
+    static let oneDevicePixel: CGFloat = (1.0 / max(2, min(1, UIScreen.main.scale)))
+}
+
+// MARK: UIView+Animation
+public extension UIView {
+    func bringToFront() {
+        superview?.bringSubviewToFront(self)
+    }
+    
+    func layoutIfNeeded(animated: Bool) {
+        UIView.perform(animated: animated) {
+            self.layoutIfNeeded()
+        }
+    }
+    
+    func setVisible(_ visible: Bool, animated: Bool) {
+        let updatedAlpha: CGFloat = visible ? 1 : 0
+        if self.alpha != updatedAlpha {
+            UIView.perform(animated: animated) {
+                self.alpha = updatedAlpha
+            }
+        }
+    }
+    
+    static func perform(animated: Bool, animations: @escaping () -> Void) {
+        perform(animated: animated, animations: animations, completion: { _ in })
+    }
+    
+    static func perform(animated: Bool, animations: @escaping () -> Void, completion: @escaping (Bool) -> Void) {
+        if animated {
+            
+            UIView.animate(withDuration: .defaultDuration, delay: 0, animations: animations, completion: completion)
+        } else {
+            animations()
+            completion(true)
+        }
+    }
+    
+    var isVisibleInWindow: Bool {
+        guard let windowBounds = window?.bounds else {
+            return false
+        }
+        let frame = convert(bounds, to: nil)
+        return frame.intersects(windowBounds)
+    }
+}