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// 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.
import RxSwift
import RxCocoa
import struct CoreGraphics.CGPoint
public typealias LocationInView = (RxGestureView) -> CGPoint
extension ObservableType where Element: RxGestureRecognizer {
/**
Filters the observable `GestureRecognizer` events sequence based on the `GestureRecognizer` state.
- parameter state: An `GestureRecognizerState` that is used to filter the `GestureRecognizer` events sequence.
- returns: An observable `GestureRecognizer` events sequence that only contains events emitted while the `GestureRecognizer`'s state match the given `state`.
*/
public func when(_ states: RxGestureRecognizerState...) -> Observable<Element> {
filter { gesture in
states.contains(gesture.state)
}
}
/**
Filters the observable `GestureRecognizer` events sequence based on the `GestureRecognizer` state.
- parameter state: An `GestureRecognizerState` that is used to filter the `GestureRecognizer` events sequence.
- returns: An observable `GestureRecognizer` events sequence that only contains events emitted while the `GestureRecognizer`'s state match the given `state`.
*/
internal func when(_ states: [RxGestureRecognizerState]) -> Observable<Element> {
filter { gesture in
states.contains(gesture.state)
}
}
/**
Maps the observable `GestureRecognizer` events sequence to an observable sequence of points computed as the location in the given `view` of the gesture.
- parameter view: A `TargetView` value on which the gesture took place.
*/
public func asLocation(in view: TargetView = .view) -> Observable<RxGesturePoint> {
map { gesture in
gesture.location(in: view.targetView(for: gesture))
}
}
public func asLocationInView() -> Observable<LocationInView> {
map { gesture in
let targetView = gesture.view!
let location = gesture.location(in: targetView)
return { view in
targetView.convert(location, to: view)
}
}
}
}