master: fixed UIImage context issue when creating translucent image

Sources/iOS/Material+UIImage.swift

@@ -131,10 +131,20 @@ extension UIImage {
      - Returns: A UIImage that is the color passed in.
      */
     open class func image(with color: UIColor, size: CGSize) -> UIImage? {
+        UIGraphicsBeginImageContextWithOptions(size, false, Screen.scale)
+        guard let context = UIGraphicsGetCurrentContext() else {
+            return nil
+        }
+        
+        context.scaleBy(x: 1.0, y: -1.0)
+        context.translateBy(x: 0.0, y: -size.height)
+        
+        context.setBlendMode(.multiply)
+        
         let rect = CGRect(x: 0, y: 0, width: size.width, height: size.height)
-        UIGraphicsBeginImageContextWithOptions(size, false, 0)
         color.setFill()
-        UIRectFill(rect)
+        context.fill(rect)
+        
         let image = UIGraphicsGetImageFromCurrentImageContext()
         UIGraphicsEndImageContext()
         return image?.withRenderingMode(.alwaysOriginal)

Sources/iOS/NavigationBar.swift

@@ -287,13 +287,12 @@ open class NavigationBar: UINavigationBar {
      */
 	open func prepare() {
         barStyle = .black
-        isTranslucent = false
         depthPreset = .depth1
         interimSpacePreset = .interimSpace3
         contentEdgeInsetsPreset = .square1
         contentScaleFactor = Screen.scale
 		backButtonImage = Icon.cm.arrowBack
-        let image = UIImage.image(with: .clear, size: CGSize(width: 1, height: 1))
+        let image = UIImage.image(with: .clear, size: CGSize(width: bounds.width, height: bounds.height))
 		shadowImage = image
 		setBackgroundImage(image, for: .default)
 		backgroundColor = .white

Sources/iOS/NavigationController.swift

@@ -108,7 +108,8 @@ open class NavigationController: UINavigationController {
     
     open override func viewWillLayoutSubviews() {
         super.viewWillLayoutSubviews()
-        navigationBar.width = view.width
+        navigationBar.setNeedsLayout()
+        navigationBar.layoutIfNeeded()
     }
     
 	/**