|
|
// Copyright (c) RxSwiftCommunity
// Permission is hereby granted, free of charge, to any person obtaining a copy // of this software and associated documentation files (the "Software"), to deal // in the Software without restriction, including without limitation the rights // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell // copies of the Software, and to permit persons to whom the Software is // furnished to do so, subject to the following conditions:
// The above copyright notice and this permission notice shall be included in // all copies or substantial portions of the Software.
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN // THE SOFTWARE.
#if canImport(UIKit)
import UIKit import RxSwift import RxCocoa
public struct TransformGestureRecognizers { public let panGesture: UIPanGestureRecognizer public let rotationGesture: UIRotationGestureRecognizer public let pinchGesture: UIPinchGestureRecognizer }
public struct TransformVelocity { let translation: CGPoint let rotation: CGFloat let scale: CGFloat }
public typealias TransformControlEvent = ControlEvent<TransformGestureRecognizers> public typealias TransformObservable = Observable<TransformGestureRecognizers>
extension Reactive where Base: RxGestureView { public func transformGestures() -> TransformControlEvent { let source = Observable.combineLatest(panGesture(), rotationGesture(), pinchGesture()) { TransformGestureRecognizers( panGesture: $0, rotationGesture: $1, pinchGesture: $2 ) } return ControlEvent(events: source) } }
extension ObservableType where Element == TransformGestureRecognizers {
public func when(_ states: RxGestureRecognizerState...) -> Observable<Element> { filter { gestures in states.contains(gestures.panGesture.state) || states.contains(gestures.rotationGesture.state) || states.contains(gestures.pinchGesture.state) } }
public func asTransform(in view: TargetView = .view) -> Observable<(transform: CGAffineTransform, velocity: TransformVelocity)> { map { gestures in let translationView = view.targetView(for: gestures.panGesture) let translation = gestures.panGesture.translation(in: translationView)
let transform = CGAffineTransform.identity .rotated(by: gestures.rotationGesture.rotation) .scaledBy(x: gestures.pinchGesture.scale, y: gestures.pinchGesture.scale) .translatedBy(x: translation.x, y: translation.y)
let velocity = TransformVelocity( translation: gestures.panGesture.velocity(in: translationView), rotation: gestures.rotationGesture.velocity, scale: gestures.pinchGesture.velocity )
return (transform, velocity) } } }
#endif
|