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author | Jason Smith <jason.smith@xamarin.com> | 2016-03-22 13:02:25 -0700 |
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committer | Jason Smith <jason.smith@xamarin.com> | 2016-03-22 16:13:41 -0700 |
commit | 17fdde66d94155fc62a034fa6658995bef6fd6e5 (patch) | |
tree | b5e5073a2a7b15cdbe826faa5c763e270a505729 /Xamarin.Forms.Platform.Android/PanGestureHandler.cs | |
download | xamarin-forms-17fdde66d94155fc62a034fa6658995bef6fd6e5.tar.gz xamarin-forms-17fdde66d94155fc62a034fa6658995bef6fd6e5.tar.bz2 xamarin-forms-17fdde66d94155fc62a034fa6658995bef6fd6e5.zip |
Initial import
Diffstat (limited to 'Xamarin.Forms.Platform.Android/PanGestureHandler.cs')
-rw-r--r-- | Xamarin.Forms.Platform.Android/PanGestureHandler.cs | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/Xamarin.Forms.Platform.Android/PanGestureHandler.cs b/Xamarin.Forms.Platform.Android/PanGestureHandler.cs new file mode 100644 index 00000000..a552964c --- /dev/null +++ b/Xamarin.Forms.Platform.Android/PanGestureHandler.cs @@ -0,0 +1,69 @@ +using System; + +namespace Xamarin.Forms.Platform.Android +{ + internal class PanGestureHandler + { + readonly Func<double, double> _pixelTranslation; + + public PanGestureHandler(Func<View> getView, Func<double, double> pixelTranslation) + { + _pixelTranslation = pixelTranslation; + GetView = getView; + } + + Func<View> GetView { get; } + + public bool OnPan(float x, float y, int pointerCount) + { + View view = GetView(); + + if (view == null) + return false; + + var result = false; + foreach (PanGestureRecognizer panGesture in + view.GestureRecognizers.GetGesturesFor<PanGestureRecognizer>(g => g.TouchPoints == pointerCount)) + { + ((IPanGestureController)panGesture).SendPan(view, _pixelTranslation(x), _pixelTranslation(y), Application.Current.PanGestureId); + result = true; + } + + return result; + } + + public bool OnPanComplete() + { + View view = GetView(); + + if (view == null) + return false; + + var result = false; + foreach (PanGestureRecognizer panGesture in view.GestureRecognizers.GetGesturesFor<PanGestureRecognizer>()) + { + ((IPanGestureController)panGesture).SendPanCompleted(view, Application.Current.PanGestureId); + result = true; + } + Application.Current.PanGestureId++; + return result; + } + + public bool OnPanStarted(int pointerCount) + { + View view = GetView(); + + if (view == null) + return false; + + var result = false; + foreach (PanGestureRecognizer panGesture in + view.GestureRecognizers.GetGesturesFor<PanGestureRecognizer>(g => g.TouchPoints == pointerCount)) + { + ((IPanGestureController)panGesture).SendPanStarted(view, Application.Current.PanGestureId); + result = true; + } + return result; + } + } +}
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