UITouch+ControlEvent

Sources/UIKit/UITouch/UITouch+ControlEvent.swift

@@ -0,0 +1,32 @@
+import UIKit
+
+extension UITouch {
+    /// Convert UITouch to UIControl.Event
+    var toControl: UIControl.Event? {
+        guard let view = self.view else { return nil }
+        let isInside = view.bounds.contains(location(in: view))
+        let wasInside = view.bounds.contains(previousLocation(in: view))
+        switch phase {
+        case .began:
+            guard isInside else { return nil }
+            return tapCount > 1 ? .touchDownRepeat : .touchDown
+        case .moved:
+            if isInside && wasInside {
+                return .touchDragInside
+            } else if isInside && !wasInside {
+                return .touchDragEnter
+            } else if !isInside && wasInside {
+                return .touchDragExit
+            } else if !isInside && !wasInside {
+                return .touchDragOutside
+            }
+            return nil
+        case .ended:
+            return isInside ? .touchUpInside : .touchUpOutside
+        case .cancelled:
+            return .touchCancel
+        default:
+            return nil
+        }
+    }
+}