├── .gitignore
├── SemiModalOverCurrentTransitioning.xcodeproj
    └── project.pbxproj
├── SemiModalOverCurrentTransitioning
    ├── AppDelegate.swift
    ├── Assets.xcassets
    │   ├── AppIcon.appiconset
    │   │   └── Contents.json
    │   └── Contents.json
    ├── Base.lproj
    │   ├── LaunchScreen.storyboard
    │   └── Main.storyboard
    ├── DismissAnimator.swift
    ├── Info.plist
    ├── ModalPresentationController.swift
    ├── OverCurrentTransitionable.swift
    ├── OverCurrentTransitioningInteractor.swift
    ├── SemiModalViewController.storyboard
    ├── SemiModalViewController.swift
    └── ViewController.swift
└── readme.md


/.gitignore:
--------------------------------------------------------------------------------
 1 | # Mac
 2 | .DS_Store
 3 | 
 4 | # Xcode
 5 | build/*
 6 | *.pbxuser
 7 | !default.pbxuser
 8 | *.mode1v3
 9 | !default.mode1v3
10 | *.mode2v3
11 | !default.mode2v3
12 | *.perspectivev3
13 | !default.perspectivev3
14 | *.xcworkspace
15 | !default.xcworkspace
16 | xcuserdata
17 | profile
18 | *.moved-aside
19 | UserInterfaceState.xcuserstate
20 | *.generated.swift
21 | 


--------------------------------------------------------------------------------
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366 | 


--------------------------------------------------------------------------------
/SemiModalOverCurrentTransitioning/AppDelegate.swift:
--------------------------------------------------------------------------------
 1 | import UIKit
 2 | 
 3 | @UIApplicationMain
 4 | class AppDelegate: UIResponder, UIApplicationDelegate {
 5 | 
 6 |     var window: UIWindow?
 7 | 
 8 | 
 9 |     func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
10 |         // Override point for customization after application launch.
11 |         return true
12 |     }
13 | 
14 |     func applicationWillResignActive(_ application: UIApplication) {
15 |         // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
16 |         // Use this method to pause ongoing tasks, disable timers, and invalidate graphics rendering callbacks. Games should use this method to pause the game.
17 |     }
18 | 
19 |     func applicationDidEnterBackground(_ application: UIApplication) {
20 |         // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
21 |         // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
22 |     }
23 | 
24 |     func applicationWillEnterForeground(_ application: UIApplication) {
25 |         // Called as part of the transition from the background to the active state; here you can undo many of the changes made on entering the background.
26 |     }
27 | 
28 |     func applicationDidBecomeActive(_ application: UIApplication) {
29 |         // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
30 |     }
31 | 
32 |     func applicationWillTerminate(_ application: UIApplication) {
33 |         // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
34 |     }
35 | 
36 | 
37 | }
38 | 
39 | 


--------------------------------------------------------------------------------
/SemiModalOverCurrentTransitioning/Assets.xcassets/AppIcon.appiconset/Contents.json:
--------------------------------------------------------------------------------
 1 | {
 2 |   "images" : [
 3 |     {
 4 |       "idiom" : "iphone",
 5 |       "size" : "20x20",
 6 |       "scale" : "2x"
 7 |     },
 8 |     {
 9 |       "idiom" : "iphone",
10 |       "size" : "20x20",
11 |       "scale" : "3x"
12 |     },
13 |     {
14 |       "idiom" : "iphone",
15 |       "size" : "29x29",
16 |       "scale" : "2x"
17 |     },
18 |     {
19 |       "idiom" : "iphone",
20 |       "size" : "29x29",
21 |       "scale" : "3x"
22 |     },
23 |     {
24 |       "idiom" : "iphone",
25 |       "size" : "40x40",
26 |       "scale" : "2x"
27 |     },
28 |     {
29 |       "idiom" : "iphone",
30 |       "size" : "40x40",
31 |       "scale" : "3x"
32 |     },
33 |     {
34 |       "idiom" : "iphone",
35 |       "size" : "60x60",
36 |       "scale" : "2x"
37 |     },
38 |     {
39 |       "idiom" : "iphone",
40 |       "size" : "60x60",
41 |       "scale" : "3x"
42 |     },
43 |     {
44 |       "idiom" : "ipad",
45 |       "size" : "20x20",
46 |       "scale" : "1x"
47 |     },
48 |     {
49 |       "idiom" : "ipad",
50 |       "size" : "20x20",
51 |       "scale" : "2x"
52 |     },
53 |     {
54 |       "idiom" : "ipad",
55 |       "size" : "29x29",
56 |       "scale" : "1x"
57 |     },
58 |     {
59 |       "idiom" : "ipad",
60 |       "size" : "29x29",
61 |       "scale" : "2x"
62 |     },
63 |     {
64 |       "idiom" : "ipad",
65 |       "size" : "40x40",
66 |       "scale" : "1x"
67 |     },
68 |     {
69 |       "idiom" : "ipad",
70 |       "size" : "40x40",
71 |       "scale" : "2x"
72 |     },
73 |     {
74 |       "idiom" : "ipad",
75 |       "size" : "76x76",
76 |       "scale" : "1x"
77 |     },
78 |     {
79 |       "idiom" : "ipad",
80 |       "size" : "76x76",
81 |       "scale" : "2x"
82 |     },
83 |     {
84 |       "idiom" : "ipad",
85 |       "size" : "83.5x83.5",
86 |       "scale" : "2x"
87 |     },
88 |     {
89 |       "idiom" : "ios-marketing",
90 |       "size" : "1024x1024",
91 |       "scale" : "1x"
92 |     }
93 |   ],
94 |   "info" : {
95 |     "version" : 1,
96 |     "author" : "xcode"
97 |   }
98 | }


--------------------------------------------------------------------------------
/SemiModalOverCurrentTransitioning/Assets.xcassets/Contents.json:
--------------------------------------------------------------------------------
1 | {
2 |   "info" : {
3 |     "version" : 1,
4 |     "author" : "xcode"
5 |   }
6 | }


--------------------------------------------------------------------------------
/SemiModalOverCurrentTransitioning/Base.lproj/LaunchScreen.storyboard:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 2 | <document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="13122.16" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="01J-lp-oVM">
 3 |     <dependencies>
 4 |         <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="13104.12"/>
 5 |         <capability name="Safe area layout guides" minToolsVersion="9.0"/>
 6 |         <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
 7 |     </dependencies>
 8 |     <scenes>
 9 |         <!--View Controller-->
10 |         <scene sceneID="EHf-IW-A2E">
11 |             <objects>
12 |                 <viewController id="01J-lp-oVM" sceneMemberID="viewController">
13 |                     <view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
14 |                         <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
15 |                         <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
16 |                         <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
17 |                         <viewLayoutGuide key="safeArea" id="6Tk-OE-BBY"/>
18 |                     </view>
19 |                 </viewController>
20 |                 <placeholder placeholderIdentifier="IBFirstResponder" id="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder"/>
21 |             </objects>
22 |             <point key="canvasLocation" x="53" y="375"/>
23 |         </scene>
24 |     </scenes>
25 | </document>
26 | 


--------------------------------------------------------------------------------
/SemiModalOverCurrentTransitioning/Base.lproj/Main.storyboard:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="14460.31" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="BYZ-38-t0r">
 3 |     <device id="retina4_7" orientation="portrait">
 4 |         <adaptation id="fullscreen"/>
 5 |     </device>
 6 |     <dependencies>
 7 |         <deployment identifier="iOS"/>
 8 |         <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="14460.20"/>
 9 |         <capability name="Safe area layout guides" minToolsVersion="9.0"/>
10 |         <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
11 |     </dependencies>
12 |     <scenes>
13 |         <!--View Controller-->
14 |         <scene sceneID="tne-QT-ifu">
15 |             <objects>
16 |                 <viewController id="BYZ-38-t0r" customClass="ViewController" customModule="SemiModalOverCurrentTransitioning" customModuleProvider="target" sceneMemberID="viewController">
17 |                     <view key="view" contentMode="scaleToFill" id="8bC-Xf-vdC">
18 |                         <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
19 |                         <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
20 |                         <subviews>
21 |                             <button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" buttonType="roundedRect" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="oDW-h0-czQ">
22 |                                 <rect key="frame" x="32" y="307" width="311" height="53"/>
23 |                                 <color key="backgroundColor" white="0.0" alpha="0.0" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
24 |                                 <fontDescription key="fontDescription" type="system" pointSize="34"/>
25 |                                 <state key="normal" title="Semi Modal">
26 |                                     <color key="titleColor" red="0.29818046149999999" green="0.45901027770000002" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
27 |                                 </state>
28 |                                 <userDefinedRuntimeAttributes>
29 |                                     <userDefinedRuntimeAttribute type="number" keyPath="cornerRadius">
30 |                                         <integer key="value" value="4"/>
31 |                                     </userDefinedRuntimeAttribute>
32 |                                 </userDefinedRuntimeAttributes>
33 |                                 <connections>
34 |                                     <action selector="buttonDidTap:" destination="BYZ-38-t0r" eventType="touchUpInside" id="mbt-Da-QAw"/>
35 |                                 </connections>
36 |                             </button>
37 |                         </subviews>
38 |                         <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
39 |                         <constraints>
40 |                             <constraint firstItem="oDW-h0-czQ" firstAttribute="leading" secondItem="6Tk-OE-BBY" secondAttribute="leading" constant="32" id="GpO-Om-uIB"/>
41 |                             <constraint firstItem="6Tk-OE-BBY" firstAttribute="trailing" secondItem="oDW-h0-czQ" secondAttribute="trailing" constant="32" id="bdm-XY-IPY"/>
42 |                             <constraint firstItem="oDW-h0-czQ" firstAttribute="centerY" secondItem="8bC-Xf-vdC" secondAttribute="centerY" id="og5-zl-aFv"/>
43 |                         </constraints>
44 |                         <viewLayoutGuide key="safeArea" id="6Tk-OE-BBY"/>
45 |                     </view>
46 |                 </viewController>
47 |                 <placeholder placeholderIdentifier="IBFirstResponder" id="dkx-z0-nzr" sceneMemberID="firstResponder"/>
48 |             </objects>
49 |         </scene>
50 |     </scenes>
51 | </document>
52 | 


--------------------------------------------------------------------------------
/SemiModalOverCurrentTransitioning/DismissAnimator.swift:
--------------------------------------------------------------------------------
 1 | import UIKit
 2 | 
 3 | class DismissAnimator: NSObject, UIViewControllerAnimatedTransitioning {
 4 |     func transitionDuration(using transitionContext: UIViewControllerContextTransitioning?) -> TimeInterval {
 5 |         return 0.4
 6 |     }
 7 | 
 8 |     func animateTransition(using transitionContext: UIViewControllerContextTransitioning) {
 9 |         guard let fromVC = transitionContext.viewController(forKey: .from) else { return }
10 | 
11 |         let containerView = transitionContext.containerView
12 | 
13 |         containerView.addSubview(fromVC.view)
14 | 
15 |         let screenBounds = UIScreen.main.bounds
16 | 
17 |         let bottomLeftCorner = CGPoint(x: 0, y: screenBounds.height)
18 |         let finalFrame = CGRect(origin: bottomLeftCorner, size: screenBounds.size)
19 |         let option: UIView.AnimationOptions = transitionContext.isInteractive ? .curveLinear : .curveEaseIn
20 | 
21 |         UIView.animate(withDuration: transitionDuration(using: transitionContext),
22 |                        delay: 0,
23 |                        options: [option],
24 |                        animations: {
25 |                            fromVC.view.frame = finalFrame
26 |                        },
27 |                        completion: { _ in
28 |                            transitionContext.completeTransition(!transitionContext.transitionWasCancelled)
29 |                        }
30 |         )
31 |     }
32 | }
33 | 


--------------------------------------------------------------------------------
/SemiModalOverCurrentTransitioning/Info.plist:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 3 | <plist version="1.0">
 4 | <dict>
 5 | 	<key>CFBundleDevelopmentRegion</key>
 6 | 	<string>$(DEVELOPMENT_LANGUAGE)</string>
 7 | 	<key>CFBundleExecutable</key>
 8 | 	<string>$(EXECUTABLE_NAME)</string>
 9 | 	<key>CFBundleIdentifier</key>
10 | 	<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
11 | 	<key>CFBundleInfoDictionaryVersion</key>
12 | 	<string>6.0</string>
13 | 	<key>CFBundleName</key>
14 | 	<string>$(PRODUCT_NAME)</string>
15 | 	<key>CFBundlePackageType</key>
16 | 	<string>APPL</string>
17 | 	<key>CFBundleShortVersionString</key>
18 | 	<string>1.0</string>
19 | 	<key>CFBundleVersion</key>
20 | 	<string>1</string>
21 | 	<key>LSRequiresIPhoneOS</key>
22 | 	<true/>
23 | 	<key>UILaunchStoryboardName</key>
24 | 	<string>LaunchScreen</string>
25 | 	<key>UIMainStoryboardFile</key>
26 | 	<string>Main</string>
27 | 	<key>UIRequiredDeviceCapabilities</key>
28 | 	<array>
29 | 		<string>armv7</string>
30 | 	</array>
31 | 	<key>UISupportedInterfaceOrientations</key>
32 | 	<array>
33 | 		<string>UIInterfaceOrientationPortrait</string>
34 | 		<string>UIInterfaceOrientationLandscapeLeft</string>
35 | 		<string>UIInterfaceOrientationLandscapeRight</string>
36 | 	</array>
37 | 	<key>UISupportedInterfaceOrientations~ipad</key>
38 | 	<array>
39 | 		<string>UIInterfaceOrientationPortrait</string>
40 | 		<string>UIInterfaceOrientationPortraitUpsideDown</string>
41 | 		<string>UIInterfaceOrientationLandscapeLeft</string>
42 | 		<string>UIInterfaceOrientationLandscapeRight</string>
43 | 	</array>
44 | </dict>
45 | </plist>
46 | 


--------------------------------------------------------------------------------
/SemiModalOverCurrentTransitioning/ModalPresentationController.swift:
--------------------------------------------------------------------------------
 1 | import UIKit
 2 | 
 3 | final class ModalPresentationController: UIPresentationController {
 4 |     private let overlayView = UIView()
 5 | 
 6 |     override func presentationTransitionWillBegin() {
 7 |         super.presentationTransitionWillBegin()
 8 | 
 9 |         overlayView.frame = containerView!.bounds
10 |         overlayView.backgroundColor = .black
11 |         overlayView.alpha = 0.0
12 |         containerView!.insertSubview(overlayView, at: 0)
13 |         presentedViewController.transitionCoordinator?.animate(alongsideTransition: { [unowned self] _ in
14 |             self.overlayView.alpha = 0.5
15 |         })
16 |     }
17 | 
18 |     override func dismissalTransitionWillBegin() {
19 |         super.dismissalTransitionWillBegin()
20 | 
21 |         presentedViewController.transitionCoordinator?.animate(alongsideTransition: { [unowned self] _ in
22 |             self.overlayView.alpha = 0.0
23 |         })
24 |     }
25 | 
26 |     override func dismissalTransitionDidEnd(_ completed: Bool) {
27 |         super.dismissalTransitionDidEnd(completed)
28 | 
29 |         if completed {
30 |             overlayView.removeFromSuperview()
31 |         }
32 |     }
33 | 
34 |     override var frameOfPresentedViewInContainerView: CGRect {
35 |         return containerView!.bounds
36 |     }
37 | 
38 |     override func containerViewWillLayoutSubviews() {
39 |         super.containerViewWillLayoutSubviews()
40 | 
41 |         overlayView.frame = containerView!.bounds
42 |         presentedView!.frame = frameOfPresentedViewInContainerView
43 |     }
44 | }
45 | 


--------------------------------------------------------------------------------
/SemiModalOverCurrentTransitioning/OverCurrentTransitionable.swift:
--------------------------------------------------------------------------------
 1 | import UIKit
 2 | 
 3 | protocol OverCurrentTransitionable where Self: UIViewController {
 4 |     var percentThreshold: CGFloat { get }
 5 |     var interactor: OverCurrentTransitioningInteractor { get }
 6 | }
 7 | 
 8 | extension OverCurrentTransitionable {
 9 |     var shouldFinishVerocityY: CGFloat {
10 |         return 1200
11 |     }
12 | }
13 | 
14 | extension OverCurrentTransitionable {
15 |     func handleTransitionGesture(_ sender: UIPanGestureRecognizer) {
16 | 
17 |         switch interactor.state {
18 |         case .shouldStart:
19 |             interactor.state = .hasStarted
20 |             dismiss(animated: true, completion: nil)
21 |         case .hasStarted, .shouldFinish:
22 |             break
23 |         case .none:
24 |             return
25 |         }
26 | 
27 |         let translation = sender.translation(in: view)
28 |         let verticalMovement = (translation.y - interactor.startInteractionTranslationY) / view.bounds.height
29 |         let downwardMovement = fmaxf(Float(verticalMovement), 0.0)
30 |         let downwardMovementPercent = fminf(downwardMovement, 1.0)
31 |         let progress = CGFloat(downwardMovementPercent)
32 | 
33 |         switch sender.state {
34 |         case .changed:
35 |             if progress > percentThreshold || sender.velocity(in: view).y > shouldFinishVerocityY {
36 |                 interactor.state =  .shouldFinish
37 |             } else {
38 |                 interactor.state =  .hasStarted
39 |             }
40 |             interactor.update(progress)
41 |         case .cancelled:
42 |             interactor.cancel()
43 |             interactor.reset()
44 |         case .ended:
45 |             switch interactor.state {
46 |             case .shouldFinish:
47 |                 interactor.finish()
48 |             case .hasStarted, .none, .shouldStart:
49 |                 interactor.cancel()
50 |             }
51 |             interactor.reset()
52 |         default:
53 |             break
54 |         }
55 |         print("Interactor State: \(interactor.state)")
56 |     }
57 | }
58 | 


--------------------------------------------------------------------------------
/SemiModalOverCurrentTransitioning/OverCurrentTransitioningInteractor.swift:
--------------------------------------------------------------------------------
 1 | import UIKit
 2 | 
 3 | class OverCurrentTransitioningInteractor: UIPercentDrivenInteractiveTransition {
 4 |     enum State {
 5 |         case none
 6 |         case shouldStart
 7 |         case hasStarted
 8 |         case shouldFinish
 9 |     }
10 | 
11 |     var state: State = .none
12 | 
13 |     var startInteractionTranslationY: CGFloat = 0
14 | 
15 |     var startHandler: (() -> Void)?
16 | 
17 |     var resetHandler: (() -> Void)?
18 |     
19 |     override func cancel() {
20 |         completionSpeed = percentComplete
21 |         super.cancel()
22 |     }
23 |     
24 |     override func finish() {
25 |         completionSpeed = 1.0 - percentComplete
26 |         super.finish()
27 |     }
28 |     
29 |     func setStartInteractionTranslationY(_ translationY: CGFloat) {
30 |         switch state {
31 |         case .shouldStart:
32 |             /// Interaction開始可能な際にInteraction開始までの間更新し続けることで、開始時のYを保持する
33 |             startInteractionTranslationY = translationY
34 |         case .hasStarted, .shouldFinish, .none:
35 |             break
36 |         }
37 |     }
38 | 
39 |     func updateStateShouldStartIfNeeded() {
40 |         switch state {
41 |         case .none:
42 |             state = .shouldStart
43 |             startHandler?()
44 |         case .shouldStart, .hasStarted, .shouldFinish:
45 |             break
46 |         }
47 |     }
48 | 
49 |     func reset() {
50 |         state = .none
51 |         startInteractionTranslationY = 0
52 |         resetHandler?()
53 |     }
54 | }
55 | 
56 | 


--------------------------------------------------------------------------------
/SemiModalOverCurrentTransitioning/SemiModalViewController.storyboard:
--------------------------------------------------------------------------------
 1 | <?xml version="1.0" encoding="UTF-8"?>
 2 | <document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="14460.31" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="xxm-XU-rSY">
 3 |     <device id="retina4_7" orientation="portrait">
 4 |         <adaptation id="fullscreen"/>
 5 |     </device>
 6 |     <dependencies>
 7 |         <deployment identifier="iOS"/>
 8 |         <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="14460.20"/>
 9 |         <capability name="Safe area layout guides" minToolsVersion="9.0"/>
10 |         <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
11 |     </dependencies>
12 |     <scenes>
13 |         <!--Semi Modal View Controller-->
14 |         <scene sceneID="XI3-cq-hWo">
15 |             <objects>
16 |                 <viewController storyboardIdentifier="SemiModalViewController" id="xxm-XU-rSY" customClass="SemiModalViewController" customModule="SemiModalOverCurrentTransitioning" customModuleProvider="target" sceneMemberID="viewController">
17 |                     <view key="view" contentMode="scaleToFill" id="qbR-L6-38n">
18 |                         <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
19 |                         <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
20 |                         <subviews>
21 |                             <view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="y7Q-GF-Y2W">
22 |                                 <rect key="frame" x="0.0" y="20" width="375" height="200"/>
23 |                                 <color key="backgroundColor" white="0.0" alpha="0.0" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
24 |                                 <constraints>
25 |                                     <constraint firstAttribute="height" constant="200" id="tNt-Ur-fvD"/>
26 |                                 </constraints>
27 |                             </view>
28 |                             <view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="i5a-Yy-f8R">
29 |                                 <rect key="frame" x="0.0" y="220" width="375" height="68"/>
30 |                                 <subviews>
31 |                                     <view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="Id8-tf-idC" userLabel="Dragger">
32 |                                         <rect key="frame" x="157.5" y="8" width="60" height="8"/>
33 |                                         <color key="backgroundColor" white="0.66666666666666663" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
34 |                                         <constraints>
35 |                                             <constraint firstAttribute="height" constant="8" id="OCC-RM-G4e"/>
36 |                                             <constraint firstAttribute="width" constant="60" id="oSA-Qs-EUe"/>
37 |                                         </constraints>
38 |                                         <userDefinedRuntimeAttributes>
39 |                                             <userDefinedRuntimeAttribute type="number" keyPath="cornerRadius">
40 |                                                 <integer key="value" value="4"/>
41 |                                             </userDefinedRuntimeAttribute>
42 |                                         </userDefinedRuntimeAttributes>
43 |                                     </view>
44 |                                     <label opaque="NO" userInteractionEnabled="NO" contentMode="left" horizontalHuggingPriority="251" verticalHuggingPriority="251" text="Header" textAlignment="natural" lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines" adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO" id="5dR-FD-Rhz">
45 |                                         <rect key="frame" x="143" y="26" width="89" height="34"/>
46 |                                         <fontDescription key="fontDescription" type="system" pointSize="28"/>
47 |                                         <nil key="textColor"/>
48 |                                         <nil key="highlightedColor"/>
49 |                                     </label>
50 |                                 </subviews>
51 |                                 <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
52 |                                 <constraints>
53 |                                     <constraint firstAttribute="bottom" secondItem="5dR-FD-Rhz" secondAttribute="bottom" constant="8" id="QZc-yr-ONG"/>
54 |                                     <constraint firstItem="5dR-FD-Rhz" firstAttribute="centerX" secondItem="i5a-Yy-f8R" secondAttribute="centerX" id="Vsd-bD-r2q"/>
55 |                                     <constraint firstAttribute="height" constant="68" id="nOE-os-p6z"/>
56 |                                     <constraint firstItem="Id8-tf-idC" firstAttribute="top" secondItem="i5a-Yy-f8R" secondAttribute="top" constant="8" id="pAX-BN-h8u"/>
57 |                                     <constraint firstItem="Id8-tf-idC" firstAttribute="centerX" secondItem="i5a-Yy-f8R" secondAttribute="centerX" id="uch-kl-Yas"/>
58 |                                 </constraints>
59 |                             </view>
60 |                             <tableView clipsSubviews="YES" contentMode="scaleToFill" alwaysBounceVertical="YES" dataMode="prototypes" style="plain" separatorStyle="default" rowHeight="-1" estimatedRowHeight="-1" sectionHeaderHeight="28" sectionFooterHeight="28" translatesAutoresizingMaskIntoConstraints="NO" id="DiX-t1-vbb">
61 |                                 <rect key="frame" x="0.0" y="288" width="375" height="379"/>
62 |                                 <color key="backgroundColor" white="1" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
63 |                             </tableView>
64 |                         </subviews>
65 |                         <color key="backgroundColor" white="0.0" alpha="0.0" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
66 |                         <constraints>
67 |                             <constraint firstItem="DiX-t1-vbb" firstAttribute="leading" secondItem="IU3-vT-ji3" secondAttribute="leading" id="1Hl-Gp-e32"/>
68 |                             <constraint firstItem="IU3-vT-ji3" firstAttribute="trailing" secondItem="i5a-Yy-f8R" secondAttribute="trailing" id="AoK-wV-ybZ"/>
69 |                             <constraint firstItem="y7Q-GF-Y2W" firstAttribute="top" secondItem="IU3-vT-ji3" secondAttribute="top" id="Hhi-ZN-m0S"/>
70 |                             <constraint firstAttribute="bottom" secondItem="DiX-t1-vbb" secondAttribute="bottom" id="KiY-pq-4Ki"/>
71 |                             <constraint firstItem="IU3-vT-ji3" firstAttribute="trailing" secondItem="DiX-t1-vbb" secondAttribute="trailing" id="OxT-Jz-hHA"/>
72 |                             <constraint firstItem="i5a-Yy-f8R" firstAttribute="top" secondItem="y7Q-GF-Y2W" secondAttribute="bottom" id="X3w-Ou-UIm"/>
73 |                             <constraint firstItem="IU3-vT-ji3" firstAttribute="trailing" secondItem="y7Q-GF-Y2W" secondAttribute="trailing" id="ao1-6G-2md"/>
74 |                             <constraint firstItem="DiX-t1-vbb" firstAttribute="top" secondItem="i5a-Yy-f8R" secondAttribute="bottom" id="iY4-4y-Eak"/>
75 |                             <constraint firstItem="i5a-Yy-f8R" firstAttribute="leading" secondItem="IU3-vT-ji3" secondAttribute="leading" id="pWt-lI-e9e"/>
76 |                             <constraint firstItem="y7Q-GF-Y2W" firstAttribute="leading" secondItem="IU3-vT-ji3" secondAttribute="leading" id="uXX-ei-vPW"/>
77 |                         </constraints>
78 |                         <viewLayoutGuide key="safeArea" id="IU3-vT-ji3"/>
79 |                     </view>
80 |                     <connections>
81 |                         <outlet property="backgroundView" destination="y7Q-GF-Y2W" id="nw7-6L-F2l"/>
82 |                         <outlet property="headerView" destination="i5a-Yy-f8R" id="AZX-la-ORy"/>
83 |                         <outlet property="tableView" destination="DiX-t1-vbb" id="d4x-27-hKL"/>
84 |                     </connections>
85 |                 </viewController>
86 |                 <placeholder placeholderIdentifier="IBFirstResponder" id="gh3-Uh-bOf" userLabel="First Responder" sceneMemberID="firstResponder"/>
87 |             </objects>
88 |             <point key="canvasLocation" x="-226" y="-6"/>
89 |         </scene>
90 |     </scenes>
91 | </document>
92 | 


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/SemiModalOverCurrentTransitioning/SemiModalViewController.swift:
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  1 | import UIKit
  2 | 
  3 | final class SemiModalViewController: UIViewController, OverCurrentTransitionable {
  4 |     var percentThreshold: CGFloat = 0.3
  5 |     var interactor = OverCurrentTransitioningInteractor()
  6 | 
  7 |     private var tableViewContentOffsetY: CGFloat = 0.0
  8 | 
  9 |     @IBOutlet private weak var headerView: UIView!
 10 |     @IBOutlet private weak var tableView: UITableView!
 11 |     @IBOutlet private weak var backgroundView: UIView!
 12 | 
 13 |     override init(nibName nibNameOrNil: String?, bundle nibBundleOrNil: Bundle?) {
 14 |         super.init(nibName: nibNameOrNil, bundle: nibBundleOrNil)
 15 |         transitioningDelegate = self
 16 |         modalPresentationStyle = .custom
 17 |     }
 18 | 
 19 |     required init?(coder aDecoder: NSCoder) {
 20 |         super.init(coder: aDecoder)
 21 |         transitioningDelegate = self
 22 |         modalPresentationStyle = .custom
 23 |     }
 24 | 
 25 |     override func viewDidLoad() {
 26 |         super.viewDidLoad()
 27 | 
 28 |         interactor.startHandler = { [weak self] in
 29 |             self?.tableView.bounces = false
 30 |         }
 31 |         interactor.resetHandler = { [weak self] in
 32 |             self?.tableView.bounces = true
 33 |         }
 34 | 
 35 |         setupViews()
 36 |     }
 37 | 
 38 |     private func setupViews() {
 39 |         headerView.layer.cornerRadius = 8.0
 40 |         headerView.layer.maskedCorners = [.layerMinXMinYCorner, .layerMaxXMinYCorner]
 41 |         let headerGesture = UIPanGestureRecognizer(target: self, action: #selector(headerDidScroll(_:)))
 42 |         headerView.addGestureRecognizer(headerGesture)
 43 | 
 44 |         let gesture = UITapGestureRecognizer(target: self, action: #selector(backgroundDidTap))
 45 |         backgroundView.addGestureRecognizer(gesture)
 46 | 
 47 |         let tableViewGesture = UIPanGestureRecognizer(target: self, action: #selector(tableViewDidScroll(_:)))
 48 |         tableViewGesture.delegate = self
 49 |         tableView.addGestureRecognizer(tableViewGesture)
 50 |         tableView.delegate = self
 51 |         tableView.dataSource = self
 52 |     }
 53 | 
 54 |     static func make() -> SemiModalViewController {
 55 |         let sb = UIStoryboard(name: "SemiModalViewController", bundle: nil)
 56 |         let vc = sb.instantiateInitialViewController() as! SemiModalViewController
 57 |         return vc
 58 |     }
 59 | 
 60 |     @objc private func backgroundDidTap() {
 61 |         dismiss(animated: true, completion: nil)
 62 |     }
 63 | 
 64 |     @objc private func headerDidScroll(_ sender: UIPanGestureRecognizer) {
 65 |         interactor.updateStateShouldStartIfNeeded()
 66 |         handleTransitionGesture(sender)
 67 |     }
 68 | 
 69 |     @objc private func tableViewDidScroll(_ sender: UIPanGestureRecognizer) {
 70 |         if tableViewContentOffsetY <= 0 {
 71 |             interactor.updateStateShouldStartIfNeeded()
 72 |         }
 73 |         interactor.setStartInteractionTranslationY(sender.translation(in: view).y)
 74 |         handleTransitionGesture(sender)
 75 |     }
 76 | }
 77 | 
 78 | extension SemiModalViewController: UITableViewDelegate, UITableViewDataSource {
 79 |     func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
 80 |         return 30
 81 |     }
 82 | 
 83 |     func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
 84 |         let cell = UITableViewCell(style: .subtitle, reuseIdentifier: "Cell")
 85 |         cell.textLabel?.text = String(indexPath.row)
 86 |         return cell
 87 |     }
 88 | 
 89 |     func scrollViewDidScroll(_ scrollView: UIScrollView) {
 90 |         tableViewContentOffsetY = scrollView.contentOffset.y
 91 |     }
 92 | }
 93 | 
 94 | extension SemiModalViewController: UIGestureRecognizerDelegate {
 95 |     func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldRecognizeSimultaneouslyWith otherGestureRecognizer: UIGestureRecognizer) -> Bool {
 96 |         return true
 97 |     }
 98 | }
 99 | 
100 | extension SemiModalViewController: UIViewControllerTransitioningDelegate {
101 |     func presentationController(forPresented presented: UIViewController, presenting: UIViewController?, source: UIViewController) -> UIPresentationController? {
102 |         return ModalPresentationController(presentedViewController: presented, presenting: presenting)
103 |     }
104 | 
105 |     func animationController(forDismissed dismissed: UIViewController) -> UIViewControllerAnimatedTransitioning? {
106 |         return DismissAnimator()
107 |     }
108 | 
109 |     func interactionControllerForDismissal(using animator: UIViewControllerAnimatedTransitioning) -> UIViewControllerInteractiveTransitioning? {
110 |         switch interactor.state {
111 |         case .hasStarted, .shouldFinish:
112 |             return interactor
113 |         case .none, .shouldStart:
114 |             return nil
115 |         }
116 |     }
117 | }
118 | 


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/SemiModalOverCurrentTransitioning/ViewController.swift:
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 1 | import UIKit
 2 | 
 3 | class ViewController: UIViewController {
 4 | 
 5 |     @IBAction func buttonDidTap(_ sender: Any) {
 6 |         let vc = SemiModalViewController.make()
 7 |         present(vc, animated: true, completion: nil)
 8 |     }
 9 | }
10 | 


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/readme.md:
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1 | # Semi Modal Vertical Over Current Transitioning
2 | 
3 | This SemiModalView can also be closed by scrolling UITableView.
4 | 
5 | * Demo
6 | 
7 | ![demo](https://github.com/iincho/SemiModalVerticalOverCurrentTransitioning/blob/media/media/demo.gif)
8 | 


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