Merge branch 'release-candidate' into stable

.jazzy.yaml

@@ -1,10 +1,10 @@
 module: MaterialMotion
-module_version: 1.3.0
+module_version: 2.0.0
 sdk: iphonesimulator
 xcodebuild_arguments:
   - -workspace
   - MaterialMotion.xcworkspace
   - -scheme
   - MaterialMotion
 github_url: https://github.com/material-motion/material-motion-swift
-github_file_prefix: https://github.com/material-motion/material-motion-swift/tree/v1.3.0
+github_file_prefix: https://github.com/material-motion/material-motion-swift/tree/v2.0.0

MaterialMotion.podspec

@@ -1,7 +1,7 @@
 Pod::Spec.new do |s|
   s.name         = "MaterialMotion"
   s.summary      = "Reactive motion driven by Core Animation."
-  s.version      = "1.3.0"
+  s.version      = "2.0.0"
   s.authors      = "The Material Motion Authors"
   s.license      = "Apache 2.0"
   s.homepage     = "https://github.com/material-motion/material-motion-swift"
@@ -11,5 +11,5 @@ Pod::Spec.new do |s|
 
   s.source_files = "src/**/*.{swift}"
 
-  s.dependency "IndefiniteObservable", "~> 3.0"
+  s.dependency "IndefiniteObservable", "~> 4.0"
 end

Podfile.lock

@@ -1,10 +1,10 @@
 PODS:
-  - CatalogByConvention (2.0.0)
-  - IndefiniteObservable (3.1.0):
-    - IndefiniteObservable/lib (= 3.1.0)
-  - IndefiniteObservable/lib (3.1.0)
-  - MaterialMotion (1.3.0):
-    - IndefiniteObservable (~> 3.0)
+  - CatalogByConvention (2.1.0)
+  - IndefiniteObservable (4.0.0):
+    - IndefiniteObservable/lib (= 4.0.0)
+  - IndefiniteObservable/lib (4.0.0)
+  - MaterialMotion (2.0.0):
+    - IndefiniteObservable (~> 4.0)
 
 DEPENDENCIES:
   - CatalogByConvention
@@ -15,10 +15,10 @@ EXTERNAL SOURCES:
     :path: "./"
 
 SPEC CHECKSUMS:
-  CatalogByConvention: be55c2263132e4f9f59299ac8a528ee8715b3275
-  IndefiniteObservable: 2789d61f487d8d37fa2b9c3153cc44d4447ff744
-  MaterialMotion: b5040104b109cf9680a2c4a77296c429dab2c376
+  CatalogByConvention: ef0913973b86b4234bcadf22aa84037c4a47cbbd
+  IndefiniteObservable: 1ee6af37efa8763a222cc6d414cd125e26ed9b6a
+  MaterialMotion: a412b109cfe4ab7b1fd956409a5da9a3635d3dce
 
 PODFILE CHECKSUM: f503265a0d60526a0d28c96dd4bdcfb40fb562fc
 
-COCOAPODS: 1.2.0
+COCOAPODS: 1.2.1

README.md

@@ -9,6 +9,7 @@
 [![CocoaPods Compatible](https://img.shields.io/cocoapods/v/MaterialMotion.svg)](https://cocoapods.org/pods/MaterialMotion)
 [![Platform](https://img.shields.io/cocoapods/p/MaterialMotion.svg)](http://cocoadocs.org/docsets/MaterialMotion)
 [![Docs](https://img.shields.io/cocoapods/metrics/doc-percent/MaterialMotion.svg)](http://cocoadocs.org/docsets/MaterialMotion)
+[![Chat](https://img.shields.io/discord/198544450366996480.svg)](https://discord.gg/material-motion)
 
 This library includes a variety of ready-to-use **interactions**. Interactions are registered to an
 instance of `MotionRuntime`:

examples/CarouselExample.swift

@@ -19,7 +19,7 @@ import MaterialMotion
 
 class CarouselExampleViewController: ExampleViewController, UIScrollViewDelegate {
 
-  var runtime: MotionRuntime!
+  let delegate = ReactiveScrollViewDelegate()
   override func viewDidLoad() {
     super.viewDidLoad()
 
@@ -29,10 +29,10 @@ class CarouselExampleViewController: ExampleViewController, UIScrollViewDelegate
     scrollView.autoresizingMask = [.flexibleWidth, .flexibleHeight]
     scrollView.isPagingEnabled = true
     scrollView.contentSize = .init(width: view.bounds.size.width * 3, height: view.bounds.size.height)
-    scrollView.delegate = self
+    scrollView.delegate = delegate
     view.addSubview(scrollView)
 
-    pager = UIPageControl()
+    let pager = UIPageControl()
     let size = pager.sizeThatFits(view.bounds.size)
     pager.autoresizingMask = [.flexibleWidth, .flexibleTopMargin]
     pager.frame = .init(x: 0, y: view.bounds.height - size.height - 20, width: view.bounds.width, height: size.height)
@@ -45,9 +45,6 @@ class CarouselExampleViewController: ExampleViewController, UIScrollViewDelegate
       (title: "Page 3", description: "Page 3 description", color: .secondaryColor),
     ]
 
-    runtime = MotionRuntime(containerView: view)
-
-    let stream = runtime.get(scrollView)
     for (index, data) in datas.enumerated() {
       let page = CarouselPage(frame: view.bounds)
       page.frame.origin.x = CGFloat(index) * view.bounds.width
@@ -56,21 +53,19 @@ class CarouselExampleViewController: ExampleViewController, UIScrollViewDelegate
       page.iconView.backgroundColor = data.color
       scrollView.addSubview(page)
 
-      let pageEdge = stream.x().offset(by: -page.frame.origin.x)
+      let pageEdge = delegate.x().offset(by: -page.frame.origin.x)
 
-      runtime.connect(pageEdge.rewriteRange(start: 0, end: 128,
-                                            destinationStart: 1, destinationEnd: 0),
-                      to: runtime.get(page).alpha)
-      runtime.connect(pageEdge.rewriteRange(start: -view.bounds.width, end: 0,
-                                            destinationStart: 0.5, destinationEnd: 1.0),
-                      to: runtime.get(page.layer).scale)
+      pageEdge.rewriteRange(start: 0, end: 128, destinationStart: 1, destinationEnd: 0).subscribeToValue {
+        page.alpha = $0
+      }
+      pageEdge.rewriteRange(start: -view.bounds.width, end: 0, destinationStart: 0.5, destinationEnd: 1.0).subscribeToValue {
+        page.layer.transform = CATransform3DMakeScale($0, $0, 1)
+      }
     }
-  }
 
-  var pager: UIPageControl!
-
-  func scrollViewDidScroll(_ scrollView: UIScrollView) {
-    pager.currentPage = Int((scrollView.contentOffset.x + scrollView.bounds.width / 2) / scrollView.bounds.width)
+    delegate.x().offset(by: scrollView.bounds.width / 2).scaled(by: 1 / scrollView.bounds.width).subscribeToValue {
+      pager.currentPage = Int($0)
+    }
   }
 
   override func exampleInformation() -> ExampleInfo {

examples/ContextualTransitionExample.swift

@@ -165,7 +165,7 @@ class PhotoAlbumViewController: UIViewController, UICollectionViewDataSource, UI
 
     super.init(nibName: nil, bundle: nil)
 
-    transitionController.transitionType = PushBackTransition.self
+    transitionController.transition = PushBackTransition()
   }
 
   required init?(coder aDecoder: NSCoder) {
@@ -202,11 +202,10 @@ class PhotoAlbumViewController: UIViewController, UICollectionViewDataSource, UI
 
     view.addSubview(collectionView)
 
-    let dismisser = transitionController.dismisser
-    dismisser.disableSimultaneousRecognition(of: collectionView.panGestureRecognizer)
+    transitionController.disableSimultaneousRecognition(of: collectionView.panGestureRecognizer)
 
     for gesture in [UIPanGestureRecognizer(), UIPinchGestureRecognizer(), UIRotationGestureRecognizer()] {
-      dismisser.dismissWhenGestureRecognizerBegins(gesture)
+      transitionController.dismissWhenGestureRecognizerBegins(gesture)
       view.addGestureRecognizer(gesture)
     }
   }
@@ -227,6 +226,10 @@ class PhotoAlbumViewController: UIViewController, UICollectionViewDataSource, UI
     collectionView.scrollToItem(at: indexPath, at: .centeredHorizontally, animated: false)
   }
 
+  override var preferredStatusBarStyle: UIStatusBarStyle {
+    return .lightContent
+  }
+
   func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
     return album.photos.count
   }
@@ -255,8 +258,6 @@ class PhotoAlbumViewController: UIViewController, UICollectionViewDataSource, UI
 
 private class PushBackTransition: Transition {
 
-  required init() {}
-
   func willBeginTransition(withContext ctx: TransitionContext, runtime: MotionRuntime) -> [Stateful] {
     let foreVC = ctx.fore as! PhotoAlbumViewController
     let foreImageView = (foreVC.collectionView.cellForItem(at: foreVC.indexPathForCurrentPhoto()) as! PhotoCollectionViewCell).imageView
@@ -282,7 +283,7 @@ private class PushBackTransition: Transition {
 
     let size = TransitionSpring(back: contextView.bounds.size, fore: fitSize, direction: ctx.direction)
     runtime.toggle(size, inReactionTo: draggable)
-    runtime.add(size, to: runtime.get(replicaView).reactiveLayer.size)
+    runtime.add(size, to: runtime.get(replicaView).layer.size)
 
     let opacity = TransitionSpring<CGFloat>(back: 0, fore: 1, direction: ctx.direction)
     runtime.add(opacity, to: runtime.get(ctx.fore.view.layer).opacity)

examples/FabTransitionExample.swift

@@ -41,7 +41,7 @@ class FabTransitionExampleViewController: ExampleViewController, TransitionConte
 
   func didTap() {
     let vc = ModalViewController()
-    vc.transitionController.transitionType = CircularRevealTransition.self
+    vc.transitionController.transition = CircularRevealTransition()
     present(vc, animated: true)
   }
 
@@ -76,18 +76,17 @@ private class ModalViewController: UIViewController {
 
 let floodFillOvershootRatio: CGFloat = 1.2
 
-private class CircularRevealTransition: Transition {
+private class CircularRevealTransition: TransitionWithTermination {
 
   // TODO: Support for transient views.
   var floodFillView: UIView!
   var foreViewLayer: CALayer!
-  deinit {
+
+  func didEndTransition(withContext ctx: TransitionContext, runtime: MotionRuntime) {
     floodFillView.removeFromSuperview()
     foreViewLayer.mask = nil
   }
 
-  required init() {}
-
   func willBeginTransition(withContext ctx: TransitionContext, runtime: MotionRuntime) -> [Stateful] {
     foreViewLayer = ctx.fore.view.layer
 
@@ -124,14 +123,14 @@ private class CircularRevealTransition: Transition {
     let foreShadowPath = CGRect(origin: .zero(), size: expandedSize)
     let shadowPath = tween(back: floodFillView.layer.shadowPath!, fore: UIBezierPath(ovalIn: foreShadowPath).cgPath, ctx: ctx)
 
-    let floodLayer = runtime.get(floodFillView).reactiveLayer
+    let floodLayer = runtime.get(floodFillView).layer
     runtime.add(expansion, to: floodLayer.size)
     runtime.add(fadeOut, to: floodLayer.opacity)
     runtime.add(radius, to: floodLayer.cornerRadius)
     runtime.add(shadowPath, to: floodLayer.shadowPath)
 
     let shiftIn = tween(back: ctx.fore.view.layer.position.y + 40, fore: ctx.fore.view.layer.position.y, ctx: ctx)
-    runtime.add(shiftIn, to: runtime.get(ctx.fore.view).reactiveLayer.positionY)
+    runtime.add(shiftIn, to: runtime.get(ctx.fore.view).layer.positionY)
 
     let maskShiftIn = tween(back: CGFloat(-40), fore: CGFloat(0), ctx: ctx)
     runtime.add(maskShiftIn, to: runtime.get(maskLayer).positionY)

examples/HowToMakeACustomOperatorExample.swift

@@ -40,8 +40,6 @@ class HowToMakeACustomOperatorExampleViewController: ExampleViewController {
 extension MotionObservableConvertible where T == CGPoint {
 
   fileprivate func wobble(width: CGFloat) -> MotionObservable<CGPoint> {
-    return _map(#function) {
-      .init(x: $0.x + sin($0.y / 50) * width, y: $0.y)
-    }
+    return _map { .init(x: $0.x + sin($0.y / 50) * width, y: $0.y) }
   }
 }

examples/InteractivePushBackTransitionExample.swift

@@ -41,7 +41,7 @@ private class ModalViewController: UIViewController, UIGestureRecognizerDelegate
   override init(nibName nibNameOrNil: String?, bundle nibBundleOrNil: Bundle?) {
     super.init(nibName: nibNameOrNil, bundle: nibBundleOrNil)
 
-    transitionController.transitionType = PushBackTransition.self
+    transitionController.transition = PushBackTransition()
   }
 
   required init?(coder aDecoder: NSCoder) {
@@ -59,17 +59,19 @@ private class ModalViewController: UIViewController, UIGestureRecognizerDelegate
     view.addSubview(scrollView)
 
     let pan = UIPanGestureRecognizer()
-    pan.delegate = transitionController.dismisser.topEdgeDismisserDelegate(for: scrollView)
-    transitionController.dismisser.dismissWhenGestureRecognizerBegins(pan)
+    pan.delegate = transitionController.topEdgeDismisserDelegate(for: scrollView)
+    transitionController.dismissWhenGestureRecognizerBegins(pan)
     scrollView.panGestureRecognizer.require(toFail: pan)
     view.addGestureRecognizer(pan)
   }
+
+  override var preferredStatusBarStyle: UIStatusBarStyle {
+    return .lightContent
+  }
 }
 
 private class PushBackTransition: Transition {
 
-  required init() {}
-
   func willBeginTransition(withContext ctx: TransitionContext, runtime: MotionRuntime) -> [Stateful] {
     let draggable = Draggable(withFirstGestureIn: ctx.gestureRecognizers)
 

examples/MaterialExpansionExample.swift

@@ -61,7 +61,7 @@ class MaterialExpansionExampleViewController: ExampleViewController {
     let floodExpansion = Tween<CGFloat>(duration: 0.375, values: [0, 1])
     floodExpansion.timingFunctions.value = [CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseOut)]
     let fadeOut = Tween<CGFloat>(duration: 0.375, values: [0.75, 0])
-    fadeOut.keyPositions.value = [0.2, 1]
+    fadeOut.offsets.value = [0.2, 1]
 
     runtime.add(SetPositionOnTap(.withExistingRecognizer(tap.gestureRecognizer)),
                 to: runtime.get(flood.layer).position)

examples/ModalDialogExample.swift

@@ -45,9 +45,7 @@ class ModalDialogViewController: UIViewController {
   override init(nibName nibNameOrNil: String?, bundle nibBundleOrNil: Bundle?) {
     super.init(nibName: nibNameOrNil, bundle: nibBundleOrNil)
 
-    transitionController.transitionType = ModalDialogTransition.self
-
-    modalPresentationStyle = .overCurrentContext
+    transitionController.transition = ModalDialogTransition()
   }
 
   required init?(coder aDecoder: NSCoder) {
@@ -64,44 +62,48 @@ class ModalDialogViewController: UIViewController {
     view.layer.shadowRadius = 5
     view.layer.shadowOpacity = 1
     view.layer.shadowOffset = .init(width: 0, height: 2)
-
-    preferredContentSize = .init(width: 200, height: 200)
   }
 }
 
-class ModalDialogTransition: SelfDismissingTransition {
+class ModalDialogTransition: SelfDismissingTransition, TransitionWithPresentation {
 
-  required init() {}
+  public func defaultModalPresentationStyle() -> UIModalPresentationStyle? {
+    return .custom
+  }
 
-  func willBeginTransition(withContext ctx: TransitionContext, runtime: MotionRuntime) -> [Stateful] {
-    let size = ctx.fore.preferredContentSize
+  public func presentationController(forPresented presented: UIViewController,
+                                     presenting: UIViewController?,
+                                     source: UIViewController) -> UIPresentationController? {
+    return ModalDialogPresentationController(presentedViewController: presented,
+                                             presenting: presenting)
+  }
 
-    if ctx.direction == .forward {
-      ctx.fore.view.bounds = CGRect(origin: .zero, size: size)
-    }
 
+  func willBeginTransition(withContext ctx: TransitionContext, runtime: MotionRuntime) -> [Stateful] {
+    let size = ctx.fore.view.frame.size
     let bounds = ctx.containerView().bounds
     let backPosition = CGPoint(x: bounds.midX, y: bounds.maxY + size.height * 3 / 4)
-    let forePosition = CGPoint(x: bounds.midX, y: bounds.midY)
+    let forePosition = ctx.fore.view.layer.position
 
     let reactiveForeLayer = runtime.get(ctx.fore.view.layer)
     let position = reactiveForeLayer.position
 
     let draggable = Draggable(withFirstGestureIn: ctx.gestureRecognizers)
 
-    let gesture = runtime.get(draggable.nextGestureRecognizer)
     let centerY = ctx.containerView().bounds.height / 2.0
 
     runtime.add(ChangeDirection(withVelocityOf: draggable.nextGestureRecognizer, whenNegative: .forward),
                 to: ctx.direction)
 
-    runtime.connect(gesture
-      .velocityOnReleaseStream()
-      .y()
-      .thresholdRange(min: -100, max: 100)
-      .rewrite([.within: position.y().threshold(centerY).rewrite([.below: .forward,
-                                                                  .above: .backward])]),
-                to: ctx.direction)
+    if let gesture = draggable.nextGestureRecognizer {
+      runtime.connect(runtime.get(gesture)
+        .velocityOnReleaseStream()
+        .y()
+        .thresholdRange(min: -100, max: 100)
+        .rewrite([.within: position.y().threshold(centerY).rewrite([.below: .forward,
+                                                                    .above: .backward])]),
+                  to: ctx.direction)
+    }
 
     let movement = TransitionSpring(back: backPosition,
                                     fore: forePosition,
@@ -112,7 +114,7 @@ class ModalDialogTransition: SelfDismissingTransition {
     return [tossable.spring]
   }
 
-  static func willPresent(fore: UIViewController, dismisser: ViewControllerDismisser) {
+  func willPresent(fore: UIViewController, dismisser: ViewControllerDismisser) {
     let tap = UITapGestureRecognizer()
     fore.view.addGestureRecognizer(tap)
     dismisser.dismissWhenGestureRecognizerBegins(tap)
@@ -121,3 +123,18 @@ class ModalDialogTransition: SelfDismissingTransition {
     dismisser.dismissWhenGestureRecognizerBegins(pan)
   }
 }
+
+private final class ModalDialogPresentationController: UIPresentationController {
+
+  override var frameOfPresentedViewInContainerView: CGRect {
+    guard let containerView = containerView else {
+      assertionFailure("Missing container view during frame query.")
+      return .zero()
+    }
+    let size = CGSize(width: 200, height: 200)
+    return CGRect(x: containerView.bounds.midX - size.width / 2,
+                  y: containerView.bounds.midY - size.height / 2,
+                  width: size.width,
+                  height: size.height)
+  }
+}