/
SwipeGestureHandler.cs
62 lines (50 loc) · 1.34 KB
/
SwipeGestureHandler.cs
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using System;
using System.Linq;
using Xamarin.Forms.Internals;
namespace Xamarin.Forms.Platform.Android
{
internal class SwipeGestureHandler
{
readonly Func<double, double> _pixelTranslation;
public SwipeGestureHandler(Func<View> getView, Func<double, double> pixelTranslation)
{
_pixelTranslation = pixelTranslation;
GetView = getView;
}
Func<View> GetView { get; }
public bool OnSwipe(float x, float y)
{
View view = GetView();
if (view == null)
return false;
var result = false;
foreach (SwipeGestureRecognizer swipeGesture in
view.GestureRecognizers.GetGesturesFor<SwipeGestureRecognizer>())
{
((ISwipeGestureController)swipeGesture).SendSwipe(view, _pixelTranslation(x), _pixelTranslation(y));
result = true;
}
return result;
}
public bool OnSwipeComplete()
{
View view = GetView();
if (view == null)
return false;
foreach (SwipeGestureRecognizer swipeGesture in view.GestureRecognizers.GetGesturesFor<SwipeGestureRecognizer>())
{
var detected = ((ISwipeGestureController)swipeGesture).DetectSwipe(view, swipeGesture.Direction);
if (detected)
{
return true;
}
}
return false;
}
public bool HasAnyGestures()
{
var view = GetView();
return view != null && view.GestureRecognizers.OfType<SwipeGestureRecognizer>().Any();
}
}
}