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GestureManager.swift
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GestureManager.swift
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import UIKit
import os
public protocol GestureManagerDelegate: AnyObject {
/// Informs the delegate that a gesture has begun.
func gestureManager(_ gestureManager: GestureManager, didBegin gestureType: GestureType)
/// Informs the delegate that a gesture has ended and whether there will be additional animations after the gesture
/// has completed. Does not indicate whether gesture-based animations have completed.
func gestureManager(_ gestureManager: GestureManager, didEnd gestureType: GestureType, willAnimate: Bool)
/// Informs the delegate that animations triggered due to a gesture have ended.
func gestureManager(_ gestureManager: GestureManager, didEndAnimatingFor gestureType: GestureType)
}
public final class GestureManager: GestureHandlerDelegate {
/// Configuration options for the built-in gestures
public var options: GestureOptions {
set {
panGestureRecognizer.isEnabled = newValue.panEnabled
pinchGestureRecognizer.isEnabled = newValue.pinchEnabled
rotateGestureRecognizer.isEnabled = newValue.rotateEnabled
pinchGestureHandler.zoomEnabled = newValue.pinchZoomEnabled
pinchGestureHandler.panEnabled = newValue.pinchPanEnabled
pinchGestureHandler.simultaneousRotateAndPinchZoomEnabled = newValue.simultaneousRotateAndPinchZoomEnabled
rotateGestureHandler.simultaneousRotateAndPinchZoomEnabled = newValue.simultaneousRotateAndPinchZoomEnabled
pitchGestureRecognizer.isEnabled = newValue.pitchEnabled
doubleTapToZoomInGestureRecognizer.isEnabled = newValue.doubleTapToZoomInEnabled
doubleTouchToZoomOutGestureRecognizer.isEnabled = newValue.doubleTouchToZoomOutEnabled
quickZoomGestureRecognizer.isEnabled = newValue.quickZoomEnabled
panGestureHandler.panMode = newValue.panMode
panGestureHandler.decelerationFactor = newValue.panDecelerationFactor
doubleTapToZoomInGestureHandler.focalPoint = newValue.focalPoint
doubleTouchToZoomOutGestureHandler.focalPoint = newValue.focalPoint
quickZoomGestureHandler.focalPoint = newValue.focalPoint
pinchGestureHandler.focalPoint = newValue.focalPoint
rotateGestureHandler.focalPoint = newValue.focalPoint
}
get {
var gestureOptions = GestureOptions()
gestureOptions.panEnabled = panGestureRecognizer.isEnabled
gestureOptions.pinchEnabled = pinchGestureRecognizer.isEnabled
gestureOptions.rotateEnabled = rotateGestureRecognizer.isEnabled
gestureOptions.pinchZoomEnabled = pinchGestureHandler.zoomEnabled
gestureOptions.pinchPanEnabled = pinchGestureHandler.panEnabled
gestureOptions.simultaneousRotateAndPinchZoomEnabled = pinchGestureHandler.simultaneousRotateAndPinchZoomEnabled
gestureOptions.pitchEnabled = pitchGestureRecognizer.isEnabled
gestureOptions.doubleTapToZoomInEnabled = doubleTapToZoomInGestureRecognizer.isEnabled
gestureOptions.doubleTouchToZoomOutEnabled = doubleTouchToZoomOutGestureRecognizer.isEnabled
gestureOptions.quickZoomEnabled = quickZoomGestureRecognizer.isEnabled
gestureOptions.panMode = panGestureHandler.panMode
gestureOptions.panDecelerationFactor = panGestureHandler.decelerationFactor
gestureOptions.focalPoint = doubleTapToZoomInGestureHandler.focalPoint
return gestureOptions
}
}
/// The gesture recognizer for the pan gesture
public var panGestureRecognizer: UIGestureRecognizer {
return panGestureHandler.gestureRecognizer
}
/// The gesture recognizer for the "pinch to zoom" gesture
public var pinchGestureRecognizer: UIGestureRecognizer {
return pinchGestureHandler.gestureRecognizer
}
/// The gesture recognizer for the rotate gesture
public var rotateGestureRecognizer: UIGestureRecognizer {
return rotateGestureHandler.gestureRecognizer
}
/// The gesture recognizer for the pitch gesture
public var pitchGestureRecognizer: UIGestureRecognizer {
return pitchGestureHandler.gestureRecognizer
}
/// The gesture recognizer for the "double tap to zoom in" gesture
public var doubleTapToZoomInGestureRecognizer: UIGestureRecognizer {
return doubleTapToZoomInGestureHandler.gestureRecognizer
}
/// The gesture recognizer for the "double touch to zoom out" gesture
public var doubleTouchToZoomOutGestureRecognizer: UIGestureRecognizer {
return doubleTouchToZoomOutGestureHandler.gestureRecognizer
}
/// The gesture recognizer for the quickZoom gesture
public var quickZoomGestureRecognizer: UIGestureRecognizer {
return quickZoomGestureHandler.gestureRecognizer
}
/// The gesture recognizer for the single tap gesture
/// - NOTE: The single tap gesture recognizer is primarily used to route tap events to the
/// `*AnnotationManager`s. You can add a target-action pair to this gesture recognizer
/// to be notified when a single tap occurs on the map.
public var singleTapGestureRecognizer: UIGestureRecognizer {
return singleTapGestureHandler.gestureRecognizer
}
internal var anyTouchGestureRecognizer: UIGestureRecognizer {
return anyTouchGestureHandler.gestureRecognizer
}
/// Set this delegate to be called back if a gesture begins
public weak var delegate: GestureManagerDelegate?
private let panGestureHandler: PanGestureHandlerProtocol
private let pinchGestureHandler: PinchGestureHandlerProtocol
private let rotateGestureHandler: RotateGestureHandlerProtocol
private let pitchGestureHandler: GestureHandler
private let doubleTapToZoomInGestureHandler: FocusableGestureHandlerProtocol
private let doubleTouchToZoomOutGestureHandler: FocusableGestureHandlerProtocol
private let quickZoomGestureHandler: FocusableGestureHandlerProtocol
private let singleTapGestureHandler: GestureHandler
private let anyTouchGestureHandler: GestureHandler
private let interruptDecelerationGestureHandler: GestureHandler
private let mapboxMap: MapboxMapProtocol
internal init(panGestureHandler: PanGestureHandlerProtocol,
pinchGestureHandler: PinchGestureHandlerProtocol,
rotateGestureHandler: RotateGestureHandlerProtocol,
pitchGestureHandler: GestureHandler,
doubleTapToZoomInGestureHandler: FocusableGestureHandlerProtocol,
doubleTouchToZoomOutGestureHandler: FocusableGestureHandlerProtocol,
quickZoomGestureHandler: FocusableGestureHandlerProtocol,
singleTapGestureHandler: GestureHandler,
anyTouchGestureHandler: GestureHandler,
interruptDecelerationGestureHandler: GestureHandler,
mapboxMap: MapboxMapProtocol) {
self.panGestureHandler = panGestureHandler
self.pinchGestureHandler = pinchGestureHandler
self.pitchGestureHandler = pitchGestureHandler
self.doubleTapToZoomInGestureHandler = doubleTapToZoomInGestureHandler
self.doubleTouchToZoomOutGestureHandler = doubleTouchToZoomOutGestureHandler
self.quickZoomGestureHandler = quickZoomGestureHandler
self.singleTapGestureHandler = singleTapGestureHandler
self.anyTouchGestureHandler = anyTouchGestureHandler
self.rotateGestureHandler = rotateGestureHandler
self.interruptDecelerationGestureHandler = interruptDecelerationGestureHandler
self.mapboxMap = mapboxMap
panGestureHandler.delegate = self
pinchGestureHandler.delegate = self
rotateGestureHandler.delegate = self
pitchGestureHandler.delegate = self
doubleTapToZoomInGestureHandler.delegate = self
doubleTouchToZoomOutGestureHandler.delegate = self
quickZoomGestureHandler.delegate = self
singleTapGestureHandler.delegate = self
pitchGestureHandler.gestureRecognizer.require(toFail: panGestureHandler.gestureRecognizer)
quickZoomGestureHandler.gestureRecognizer.require(toFail: doubleTapToZoomInGestureHandler.gestureRecognizer)
singleTapGestureHandler.gestureRecognizer.require(toFail: doubleTapToZoomInGestureHandler.gestureRecognizer)
// Invoke the setter to ensure the defaults are synchronized
self.options = GestureOptions()
}
private var pinchBeganCallCount = 0
internal func gestureBegan(for gestureType: GestureType) {
// filter out duplicate pinch events coming from pinch and rotate handlers
// TODO: Remove this once GestureType.rotate is added
if gestureType == .pinch {
pinchBeganCallCount += 1
guard pinchBeganCallCount == 1 else {
return
}
}
OSLog.poi.signpostEvent("Gesture began", message: "type: \(gestureType)")
mapboxMap.beginGesture()
delegate?.gestureManager(self, didBegin: gestureType)
}
internal func gestureEnded(for gestureType: GestureType, willAnimate: Bool) {
// filter out duplicate pinch events coming from pinch and rotate handlers
// TODO: Remove this once GestureType.rotate is added
if gestureType == .pinch {
assert(pinchBeganCallCount > 0)
pinchBeganCallCount -= 1
guard pinchBeganCallCount == 0 else {
return
}
}
OSLog.poi.signpostEvent("Gesture ended", message: "type: \(gestureType)")
mapboxMap.endGesture()
delegate?.gestureManager(self, didEnd: gestureType, willAnimate: willAnimate)
}
internal func animationEnded(for gestureType: GestureType) {
delegate?.gestureManager(self, didEndAnimatingFor: gestureType)
}
}