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NoDualScreenServiceImpl.shared.cs
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NoDualScreenServiceImpl.shared.cs
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using System;
using System.Collections.Generic;
using System.Text;
using System.Threading.Tasks;
using Xamarin.Forms.Internals;
namespace Xamarin.Forms.DualScreen
{
internal class NoDualScreenServiceImpl : IDualScreenService
{
static Lazy<NoDualScreenServiceImpl> _Instance = new Lazy<NoDualScreenServiceImpl>(() => new NoDualScreenServiceImpl());
public static NoDualScreenServiceImpl Instance => _Instance.Value;
public NoDualScreenServiceImpl()
{
}
public Task<int> GetHingeAngleAsync() => Task.FromResult(0);
public bool IsSpanned => false;
public bool IsLandscape => Device.info.CurrentOrientation.IsLandscape();
public DeviceInfo DeviceInfo => Device.info;
#pragma warning disable CS0067
public event EventHandler OnScreenChanged;
#pragma warning restore CS0067
public void Dispose()
{
}
public Size ScaledScreenSize => Device.info.ScaledScreenSize;
public Rectangle GetHinge()
{
return Rectangle.Zero;
}
public Point? GetLocationOnScreen(VisualElement visualElement)
{
return null;
}
public object WatchForChangesOnLayout(VisualElement visualElement, Action action)
{
if (action == null)
return null;
EventHandler<EventArg<VisualElement>> layoutUpdated = (_, __) =>
{
action();
};
visualElement.BatchCommitted += layoutUpdated;
return layoutUpdated;
}
public void StopWatchingForChangesOnLayout(VisualElement visualElement, object handle)
{
if (handle == null)
return;
if (handle is EventHandler<EventArg<VisualElement>> handler)
visualElement.BatchCommitted -= handler;
}
}
}