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Pods/SwiftEntryKit/Source/Model/EntryAttributes/EKAttributes+Scroll.swift

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+//
+//  EKAttributes+Scroll.swift
+//  SwiftEntryKit
+//
+//  Created by Daniel Huri on 4/30/18.
+//
+
+import Foundation
+import CoreGraphics
+
+public extension EKAttributes {
+    
+    /** Describes the event of scroll user interaction */
+    enum Scroll {
+    
+        /** Describes the event when the user leaves the entry after rubber-banding it - How the entry behaves */
+        public struct PullbackAnimation {
+            public var duration: TimeInterval
+            public var damping: CGFloat
+            public var initialSpringVelocity: CGFloat
+            
+            public init(duration: TimeInterval, damping: CGFloat, initialSpringVelocity: CGFloat) {
+                self.duration = duration
+                self.damping = damping
+                self.initialSpringVelocity = initialSpringVelocity
+            }
+            
+            /** The entry is jolted when it's pulled back into the original position */
+            public static var jolt: PullbackAnimation {
+                return PullbackAnimation(duration: 0.5, damping: 0.3, initialSpringVelocity: 10)
+            }
+            
+            /** The view eases out when it's pulled back into the original position */
+            public static var easeOut: PullbackAnimation {
+                return PullbackAnimation(duration: 0.3, damping: 1, initialSpringVelocity: 10)
+            }
+        }
+        
+        /** The scroll ability is totally disabled */
+        case disabled
+        
+        /** The scroll in the opposite direction to the edge is disabled */
+        case edgeCrossingDisabled(swipeable: Bool)
+        
+        /** The scroll abiliby is enabled */
+        case enabled(swipeable: Bool, pullbackAnimation: PullbackAnimation)
+        
+        var isEnabled: Bool {
+            switch self {
+            case .disabled:
+                return false
+            default:
+                return true
+            }
+        }
+        
+        var isSwipeable: Bool {
+            switch self {
+            case .edgeCrossingDisabled(swipeable: let swipeable), .enabled(swipeable: let swipeable, pullbackAnimation: _):
+                return swipeable
+            default:
+                return false
+            }
+        }
+        
+        var isEdgeCrossingEnabled: Bool {
+            switch self {
+            case .edgeCrossingDisabled:
+                return false
+            default:
+                return true
+            }
+        }
+    }
+}