1

XSeri/Class/Store/Controller/XSCoinsPackViewController.swift

@@ -9,59 +9,76 @@ import UIKit
 import SnapKit
 
 class XSCoinsPackViewController: XSViewController {
-    
-    
-    private var contentBgBorderImage = UIImage(named: "gradient_color_image_03")
-    
+
+
+    private let contentBgCornerRadius: CGFloat = 26
+    private let contentBgBorderImage = UIImage(named: "gradient_color_image_03")?.xs_flippedVertically()
+
     private lazy var mainBgView = UIImageView(image: UIImage(named: "coins_pack_bg_01"))
-    
+
     private lazy var contentBgView: UIImageView = {
         let view = UIImageView(image: UIImage(named: "coins_pack_bg_02"))
-        view.layer.cornerRadius = 26
+        view.layer.cornerRadius = contentBgCornerRadius
         view.layer.masksToBounds = true
         view.layer.maskedCorners = [.layerMinXMinYCorner, .layerMaxXMinYCorner]
         view.layer.borderWidth = 1
         return view
     }()
-    
+
     override func viewDidLoad() {
         super.viewDidLoad()
         self.title = "My Refills".localized
-        
+
         xs_setupUI()
     }
-    
+
 
     override func viewWillAppear(_ animated: Bool) {
         super.viewWillAppear(animated)
         self.navigationController?.setNavigationBarHidden(false, animated: true)
         xs_setNavigationStyle()
     }
-    
+
     override func viewWillLayoutSubviews() {
         super.viewWillLayoutSubviews()
-        
-        contentBgBorderImage = contentBgBorderImage?.xs_resized(to: contentBgView.bounds.size)
-        contentBgView.layer.borderColor = UIColor(patternImage: contentBgBorderImage!).cgColor
+
+        guard let borderImage = contentBgBorderImage?.xs_resized(to: contentBgView.bounds.size) else { return }
+        contentBgView.layer.borderColor = UIColor(patternImage: borderImage).cgColor
     }
 
 }
 
 
 extension XSCoinsPackViewController {
-    
+
     private func xs_setupUI() {
         view.addSubview(mainBgView)
         view.addSubview(contentBgView)
-        
+
         mainBgView.snp.makeConstraints { make in
             make.edges.equalToSuperview()
         }
-        
+
         contentBgView.snp.makeConstraints { make in
             make.left.right.bottom.equalToSuperview()
             make.top.equalTo(self.view.safeAreaLayoutGuide)
         }
     }
-    
+
+}
+
+private extension UIImage {
+
+    func xs_flippedVertically() -> UIImage {
+        let format = UIGraphicsImageRendererFormat.default()
+        format.scale = scale
+        format.opaque = false
+
+        return UIGraphicsImageRenderer(size: size, format: format).image { context in
+            let cgContext = context.cgContext
+            cgContext.translateBy(x: 0, y: size.height)
+            cgContext.scaleBy(x: 1, y: -1)
+            draw(in: CGRect(origin: .zero, size: size))
+        }
+    }
 }