1 files changed, 108 insertions, 0 deletions
diff --git a/Xamarin.Forms.Platform.Android/Renderers/ImageRenderer.cs b/Xamarin.Forms.Platform.Android/Renderers/ImageRenderer.cs
new file mode 100644
index 00000000..a080e58b
--- /dev/null
+++ b/Xamarin.Forms.Platform.Android/Renderers/ImageRenderer.cs
@@ -0,0 +1,108 @@
+using System;
+using System.ComponentModel;
+using System.IO;
+using System.Threading.Tasks;
+using Android.Graphics;
+using AImageView = Android.Widget.ImageView;
+
+namespace Xamarin.Forms.Platform.Android
+{
+	public class ImageRenderer : ViewRenderer<Image, AImageView>
+	{
+		bool _isDisposed;
+
+		public ImageRenderer()
+		{
+			AutoPackage = false;
+		}
+
+		protected override void Dispose(bool disposing)
+		{
+			if (_isDisposed)
+				return;
+
+			_isDisposed = true;
+
+			base.Dispose(disposing);
+		}
+
+		protected override void OnElementChanged(ElementChangedEventArgs<Image> e)
+		{
+			base.OnElementChanged(e);
+
+			if (e.OldElement == null)
+			{
+				var view = new FormsImageView(Context);
+				SetNativeControl(view);
+			}
+
+			UpdateBitmap(e.OldElement);
+			UpdateAspect();
+		}
+
+		protected override void OnElementPropertyChanged(object sender, PropertyChangedEventArgs e)
+		{
+			base.OnElementPropertyChanged(sender, e);
+
+			if (e.PropertyName == Image.SourceProperty.PropertyName)
+				UpdateBitmap();
+			else if (e.PropertyName == Image.AspectProperty.PropertyName)
+				UpdateAspect();
+		}
+
+		void UpdateAspect()
+		{
+			AImageView.ScaleType type = Element.Aspect.ToScaleType();
+			Control.SetScaleType(type);
+		}
+
+		async void UpdateBitmap(Image previous = null)
+		{
+			if (Device.IsInvokeRequired)
+				throw new InvalidOperationException("Image Bitmap must not be updated from background thread");
+
+			Bitmap bitmap = null;
+
+			ImageSource source = Element.Source;
+			IImageSourceHandler handler;
+
+			if (previous != null && Equals(previous.Source, Element.Source))
+				return;
+
+			((IElementController)Element).SetValueFromRenderer(Image.IsLoadingPropertyKey, true);
+
+			var formsImageView = Control as FormsImageView;
+			if (formsImageView != null)
+				formsImageView.SkipInvalidate();
+
+			Control.SetImageResource(global::Android.Resource.Color.Transparent);
+
+			if (source != null && (handler = Registrar.Registered.GetHandler<IImageSourceHandler>(source.GetType())) != null)
+			{
+				try
+				{
+					bitmap = await handler.LoadImageAsync(source, Context);
+				}
+				catch (TaskCanceledException)
+				{
+				}
+				catch (IOException e)
+				{
+				}
+			}
+
+			if (Element == null || !Equals(Element.Source, source))
+				return;
+
+			if (!_isDisposed)
+			{
+				Control.SetImageBitmap(bitmap);
+				if (bitmap != null)
+					bitmap.Dispose();
+
+				((IElementController)Element).SetValueFromRenderer(Image.IsLoadingPropertyKey, false);
+				((IVisualElementController)Element).NativeSizeChanged();
+			}
+		}
+	}
+}
+\ No newline at end of file