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+//
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+// ImageTransition.swift
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+// Kingfisher
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+//
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+// Created by Wei Wang on 15/9/18.
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+//
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+// Copyright (c) 2015 Wei Wang <onevcat@gmail.com>
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+//
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+// Permission is hereby granted, free of charge, to any person obtaining a copy
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+// of this software and associated documentation files (the "Software"), to deal
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+// in the Software without restriction, including without limitation the rights
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+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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+// copies of the Software, and to permit persons to whom the Software is
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+// furnished to do so, subject to the following conditions:
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+//
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+// The above copyright notice and this permission notice shall be included in
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+// all copies or substantial portions of the Software.
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+//
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+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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+// THE SOFTWARE.
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+
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+import Foundation
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+
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+public enum ImageTransition {
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+ case None
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+ case Fade(NSTimeInterval)
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+
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+ case FlipFromLeft(NSTimeInterval)
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+ case FlipFromRight(NSTimeInterval)
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+ case FlipFromTop(NSTimeInterval)
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+ case FlipFromBottom(NSTimeInterval)
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+
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+ case Custom(duration: NSTimeInterval,
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+ options: UIViewAnimationOptions,
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+ animations: ((UIImageView, UIImage) -> Void)?,
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+ completion: ((Bool) -> Void)?)
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+
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+ var duration: NSTimeInterval {
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+ switch self {
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+ case .None: return 0
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+ case .Fade(let duration): return duration
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+
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+ case .FlipFromLeft(let duration): return duration
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+ case .FlipFromRight(let duration): return duration
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+ case .FlipFromTop(let duration): return duration
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+ case .FlipFromBottom(let duration): return duration
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+
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+ case .Custom(let duration, _, _, _): return duration
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+ }
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+ }
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+
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+ var animationOptions: UIViewAnimationOptions {
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+ switch self {
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+ case .None: return .TransitionNone
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+ case .Fade(_): return .TransitionCrossDissolve
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+
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+ case .FlipFromLeft(_): return .TransitionFlipFromLeft
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+ case .FlipFromRight(_): return .TransitionFlipFromRight
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+ case .FlipFromTop(_): return .TransitionFlipFromTop
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+ case .FlipFromBottom(_): return .TransitionFlipFromBottom
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+
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+ case .Custom(_, let options, _, _): return options
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+ }
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+ }
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+
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+ var animations: ((UIImageView, UIImage) -> Void)? {
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+ switch self {
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+ case .Custom(_, _, let animations, _): return animations
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+ default: return {$0.image = $1}
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+ }
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+ }
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+
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+ var completion: ((Bool) -> Void)? {
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+ switch self {
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+ case .Custom(_, _, _, let completion): return completion
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+ default: return nil
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+ }
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+ }
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+}
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+
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onevcat