diff options
Diffstat (limited to 'Xamarin.Forms.Platform.iOS/EventTracker.cs')
| -rw-r--r-- | Xamarin.Forms.Platform.iOS/EventTracker.cs | 110 |
1 files changed, 83 insertions, 27 deletions
diff --git a/Xamarin.Forms.Platform.iOS/EventTracker.cs b/Xamarin.Forms.Platform.iOS/EventTracker.cs index 9c6c90e9..596506a5 100644 --- a/Xamarin.Forms.Platform.iOS/EventTracker.cs +++ b/Xamarin.Forms.Platform.iOS/EventTracker.cs @@ -3,27 +3,42 @@ using System.Collections.Generic; using System.Collections.ObjectModel; using System.Collections.Specialized; using System.Linq; + +#if __MOBILE__ using UIKit; +using NativeView = UIKit.UIView; +using NativeGestureRecognizer = UIKit.UIGestureRecognizer; +using NativeGestureRecognizerState = UIKit.UIGestureRecognizerState; namespace Xamarin.Forms.Platform.iOS +#else +using AppKit; +using NativeView = AppKit.NSView; +using NativeGestureRecognizer = AppKit.NSGestureRecognizer; +using NativeGestureRecognizerState = AppKit.NSGestureRecognizerState; + +namespace Xamarin.Forms.Platform.MacOS +#endif { public class EventTracker : IDisposable { readonly NotifyCollectionChangedEventHandler _collectionChangedHandler; - readonly Dictionary<IGestureRecognizer, UIGestureRecognizer> _gestureRecognizers = new Dictionary<IGestureRecognizer, UIGestureRecognizer>(); + readonly Dictionary<IGestureRecognizer, NativeGestureRecognizer> _gestureRecognizers = new Dictionary<IGestureRecognizer, NativeGestureRecognizer>(); readonly IVisualElementRenderer _renderer; bool _disposed; - UIView _handler; + NativeView _handler; double _previousScale = 1.0; +#if __MOBILE__ UITouchEventArgs _shouldReceive; +#endif public EventTracker(IVisualElementRenderer renderer) { if (renderer == null) - throw new ArgumentNullException("renderer"); + throw new ArgumentNullException(nameof(renderer)); _collectionChangedHandler = ModelGestureRecognizersOnCollectionChanged; @@ -62,18 +77,18 @@ namespace Xamarin.Forms.Platform.iOS _handler = null; } - public void LoadEvents(UIView handler) + public void LoadEvents(NativeView handler) { if (_disposed) throw new ObjectDisposedException(null); - +#if __MOBILE__ _shouldReceive = (r, t) => t.View is IVisualElementRenderer; - +#endif _handler = handler; OnElementChanged(this, new VisualElementChangedEventArgs(null, _renderer.Element)); } - protected virtual UIGestureRecognizer GetNativeRecognizer(IGestureRecognizer recognizer) + protected virtual NativeGestureRecognizer GetNativeRecognizer(IGestureRecognizer recognizer) { if (recognizer == null) return null; @@ -84,7 +99,7 @@ namespace Xamarin.Forms.Platform.iOS var tapRecognizer = recognizer as TapGestureRecognizer; if (tapRecognizer != null) { - var uiRecognizer = CreateTapRecognizer(1, tapRecognizer.NumberOfTapsRequired, r => + var returnAction = new Action(() => { var tapGestureRecognizer = weakRecognizer.Target as TapGestureRecognizer; var eventTracker = weakEventTracker.Target as EventTracker; @@ -93,6 +108,7 @@ namespace Xamarin.Forms.Platform.iOS if (tapGestureRecognizer != null && view != null) tapGestureRecognizer.SendTapped(view); }); + var uiRecognizer = CreateTapRecognizer(tapRecognizer.NumberOfTapsRequired, returnAction); return uiRecognizer; } @@ -110,41 +126,51 @@ namespace Xamarin.Forms.Platform.iOS { var oldScale = eventTracker._previousScale; var originPoint = r.LocationInView(null); +#if __MOBILE__ originPoint = UIApplication.SharedApplication.KeyWindow.ConvertPointToView(originPoint, eventTracker._renderer.NativeView); +#else + originPoint = NSApplication.SharedApplication.KeyWindow.ContentView.ConvertPointToView(originPoint, eventTracker._renderer.NativeView); +#endif var scaledPoint = new Point(originPoint.X / view.Width, originPoint.Y / view.Height); switch (r.State) { - case UIGestureRecognizerState.Began: + case NativeGestureRecognizerState.Began: +#if __MOBILE__ if (r.NumberOfTouches < 2) return; +#endif pinchGestureRecognizer.SendPinchStarted(view, scaledPoint); startingScale = view.Scale; break; - case UIGestureRecognizerState.Changed: + case NativeGestureRecognizerState.Changed: +#if __MOBILE__ if (r.NumberOfTouches < 2 && pinchGestureRecognizer.IsPinching) { - r.State = UIGestureRecognizerState.Ended; + r.State = NativeGestureRecognizerState.Ended; pinchGestureRecognizer.SendPinchEnded(view); return; } - + var scale = r.Scale; +#else + var scale = r.Magnification; +#endif var delta = 1.0; - var dif = Math.Abs(r.Scale - oldScale) * startingScale; - if (oldScale < r.Scale) + var dif = Math.Abs(scale - oldScale) * startingScale; + if (oldScale < scale) delta = 1 + dif; - if (oldScale > r.Scale) + if (oldScale > scale) delta = 1 - dif; pinchGestureRecognizer.SendPinch(view, delta, scaledPoint); - eventTracker._previousScale = r.Scale; + eventTracker._previousScale = scale; break; - case UIGestureRecognizerState.Cancelled: - case UIGestureRecognizerState.Failed: + case NativeGestureRecognizerState.Cancelled: + case NativeGestureRecognizerState.Failed: if (pinchGestureRecognizer.IsPinching) pinchGestureRecognizer.SendPinchCanceled(view); break; - case UIGestureRecognizerState.Ended: + case NativeGestureRecognizerState.Ended: if (pinchGestureRecognizer.IsPinching) pinchGestureRecognizer.SendPinchEnded(view); eventTracker._previousScale = 1; @@ -168,33 +194,42 @@ namespace Xamarin.Forms.Platform.iOS { switch (r.State) { - case UIGestureRecognizerState.Began: + case NativeGestureRecognizerState.Began: +#if __MOBILE__ if (r.NumberOfTouches != panRecognizer.TouchPoints) return; +#endif panGestureRecognizer.SendPanStarted(view, Application.Current.PanGestureId); break; - case UIGestureRecognizerState.Changed: + case NativeGestureRecognizerState.Changed: +#if __MOBILE__ if (r.NumberOfTouches != panRecognizer.TouchPoints) { - r.State = UIGestureRecognizerState.Ended; + r.State = NativeGestureRecognizerState.Ended; panGestureRecognizer.SendPanCompleted(view, Application.Current.PanGestureId); Application.Current.PanGestureId++; return; } +#endif var translationInView = r.TranslationInView(_handler); panGestureRecognizer.SendPan(view, translationInView.X, translationInView.Y, Application.Current.PanGestureId); break; - case UIGestureRecognizerState.Cancelled: - case UIGestureRecognizerState.Failed: + case NativeGestureRecognizerState.Cancelled: + case NativeGestureRecognizerState.Failed: panGestureRecognizer.SendPanCanceled(view, Application.Current.PanGestureId); Application.Current.PanGestureId++; break; - case UIGestureRecognizerState.Ended: + case NativeGestureRecognizerState.Ended: +#if __MOBILE__ if (r.NumberOfTouches != panRecognizer.TouchPoints) { panGestureRecognizer.SendPanCompleted(view, Application.Current.PanGestureId); Application.Current.PanGestureId++; } +#else + panGestureRecognizer.SendPanCompleted(view, Application.Current.PanGestureId); + Application.Current.PanGestureId++; +#endif break; } } @@ -204,7 +239,7 @@ namespace Xamarin.Forms.Platform.iOS return null; } - +#if __MOBILE__ UIPanGestureRecognizer CreatePanRecognizer(int numTouches, Action<UIPanGestureRecognizer> action) { var result = new UIPanGestureRecognizer(action); @@ -218,14 +253,33 @@ namespace Xamarin.Forms.Platform.iOS return result; } - UITapGestureRecognizer CreateTapRecognizer(int numFingers, int numTaps, Action<UITapGestureRecognizer> action) + UITapGestureRecognizer CreateTapRecognizer(int numTaps, Action action, int numFingers = 1) { var result = new UITapGestureRecognizer(action); result.NumberOfTouchesRequired = (uint)numFingers; result.NumberOfTapsRequired = (uint)numTaps; return result; } +#else + NSPanGestureRecognizer CreatePanRecognizer(int numTouches, Action<NSPanGestureRecognizer> action) + { + var result = new NSPanGestureRecognizer(action); + return result; + } + + NSMagnificationGestureRecognizer CreatePinchRecognizer(Action<NSMagnificationGestureRecognizer> action) + { + var result = new NSMagnificationGestureRecognizer(action); + return result; + } + NSClickGestureRecognizer CreateTapRecognizer(int numTaps, Action action) + { + var result = new NSClickGestureRecognizer(action); + result.NumberOfClicksRequired = numTaps; + return result; + } +#endif void LoadRecognizers() { if (ElementGestureRecognizers == null) @@ -239,7 +293,9 @@ namespace Xamarin.Forms.Platform.iOS var nativeRecognizer = GetNativeRecognizer(recognizer); if (nativeRecognizer != null) { +#if __MOBILE__ nativeRecognizer.ShouldReceiveTouch = _shouldReceive; +#endif _handler.AddGestureRecognizer(nativeRecognizer); _gestureRecognizers[recognizer] = nativeRecognizer; |