diff options
Diffstat (limited to 'Xamarin.Forms.Core/PinchGestureRecognizer.cs')
-rw-r--r-- | Xamarin.Forms.Core/PinchGestureRecognizer.cs | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/Xamarin.Forms.Core/PinchGestureRecognizer.cs b/Xamarin.Forms.Core/PinchGestureRecognizer.cs new file mode 100644 index 00000000..aef07fbb --- /dev/null +++ b/Xamarin.Forms.Core/PinchGestureRecognizer.cs @@ -0,0 +1,51 @@ +using System; + +namespace Xamarin.Forms +{ + public sealed class PinchGestureRecognizer : GestureRecognizer, IPinchGestureController + { + bool IPinchGestureController.IsPinching { get; set; } + + void IPinchGestureController.SendPinch(Element sender, double delta, Point currentScalePoint) + { + EventHandler<PinchGestureUpdatedEventArgs> handler = PinchUpdated; + if (handler != null) + { + handler(sender, new PinchGestureUpdatedEventArgs(GestureStatus.Running, delta, currentScalePoint)); + } + ((IPinchGestureController)this).IsPinching = true; + } + + void IPinchGestureController.SendPinchCanceled(Element sender) + { + EventHandler<PinchGestureUpdatedEventArgs> handler = PinchUpdated; + if (handler != null) + { + handler(sender, new PinchGestureUpdatedEventArgs(GestureStatus.Canceled)); + } + ((IPinchGestureController)this).IsPinching = false; + } + + void IPinchGestureController.SendPinchEnded(Element sender) + { + EventHandler<PinchGestureUpdatedEventArgs> handler = PinchUpdated; + if (handler != null) + { + handler(sender, new PinchGestureUpdatedEventArgs(GestureStatus.Completed)); + } + ((IPinchGestureController)this).IsPinching = false; + } + + void IPinchGestureController.SendPinchStarted(Element sender, Point initialScalePoint) + { + EventHandler<PinchGestureUpdatedEventArgs> handler = PinchUpdated; + if (handler != null) + { + handler(sender, new PinchGestureUpdatedEventArgs(GestureStatus.Started, 1, initialScalePoint)); + } + ((IPinchGestureController)this).IsPinching = true; + } + + public event EventHandler<PinchGestureUpdatedEventArgs> PinchUpdated; + } +}
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