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-rw-r--r--Xamarin.Forms.Core/DeviceInfo.cs51
1 files changed, 51 insertions, 0 deletions
diff --git a/Xamarin.Forms.Core/DeviceInfo.cs b/Xamarin.Forms.Core/DeviceInfo.cs
new file mode 100644
index 00000000..dc83075a
--- /dev/null
+++ b/Xamarin.Forms.Core/DeviceInfo.cs
@@ -0,0 +1,51 @@
+using System;
+using System.ComponentModel;
+using System.Runtime.CompilerServices;
+
+namespace Xamarin.Forms
+{
+ internal abstract class DeviceInfo : INotifyPropertyChanged, IDisposable
+ {
+ DeviceOrientation _currentOrientation;
+ bool _disposed;
+
+ public DeviceOrientation CurrentOrientation
+ {
+ get { return _currentOrientation; }
+ internal set
+ {
+ if (Equals(_currentOrientation, value))
+ return;
+ _currentOrientation = value;
+ OnPropertyChanged();
+ }
+ }
+
+ public abstract Size PixelScreenSize { get; }
+
+ public abstract Size ScaledScreenSize { get; }
+
+ public abstract double ScalingFactor { get; }
+
+ public void Dispose()
+ {
+ Dispose(true);
+ }
+
+ public event PropertyChangedEventHandler PropertyChanged;
+
+ protected virtual void Dispose(bool disposing)
+ {
+ if (_disposed)
+ return;
+ _disposed = true;
+ }
+
+ protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = null)
+ {
+ PropertyChangedEventHandler handler = PropertyChanged;
+ if (handler != null)
+ handler(this, new PropertyChangedEventArgs(propertyName));
+ }
+ }
+} \ No newline at end of file