Merge pull request #156 from ajamaica/feature/qrcode_helper

Sources/Solana/Pay/QrCodeHelper.swift

@@ -0,0 +1,30 @@
+//
+//  QRCodeHelper.swift
+//  
+//
+//  Created by Arturo Jamaica on 2022/02/20.
+//
+#if canImport(UIKit)
+#if canImport(CoreImage)
+import Foundation
+import UIKit
+import CoreImage
+
+class QRCodeHelper {
+    func generateQRCode(from url: URL) -> UIImage? {
+        let data = url.absoluteString.data(using: String.Encoding.ascii)
+
+        if let filter = CIFilter(name: "CIQRCodeGenerator") {
+            filter.setValue(data, forKey: "inputMessage")
+            let transform = CGAffineTransform(scaleX: 3, y: 3)
+
+            if let output = filter.outputImage?.transformed(by: transform) {
+                return UIImage(ciImage: output)
+            }
+        }
+
+        return nil
+    }
+}
+#endif
+#endif