Added device identification to surface editor

Fixed dialog rendering
Cleaned up XAML

src/Artemis.Core/Artemis.Core.csproj

@@ -188,6 +188,7 @@
     <Compile Include="Properties\AssemblyInfo.cs" />
     <Compile Include="RGB.NET\DirectBitmap.cs" />
     <Compile Include="RGB.NET\GraphicsDecorator.cs" />
+    <Compile Include="Services\DeviceService.cs" />
     <Compile Include="Services\Interfaces\IProtectedArtemisService.cs" />
     <Compile Include="Services\Interfaces\IMainDataModelService.cs" />
     <Compile Include="Services\CoreService.cs" />

src/Artemis.Core/Services/DeviceService.cs

@@ -0,0 +1,64 @@
+using System;
+using System.Collections.Generic;
+using System.Drawing;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Artemis.Core.Events;
+using Artemis.Core.Models.Surface;
+using Artemis.Core.Services.Interfaces;
+
+namespace Artemis.Core.Services
+{
+    public class DeviceService : IDeviceService
+    {
+        private readonly ICoreService _coreService;
+
+        public DeviceService(ICoreService coreService)
+        {
+            _coreService = coreService;
+        }
+
+        public void IdentifyDevice(Device device)
+        {
+            BlinkDevice(device, 0);
+        }
+
+        private void BlinkDevice(Device device, int blinkCount)
+        {
+            // Draw a white overlay over the device
+            void DrawOverlay(object sender, FrameRenderingEventArgs args)
+            {
+                using (var g = Graphics.FromImage(args.Bitmap))
+                {
+                    g.FillPath(new SolidBrush(Color.White), device.RenderPath);
+                }
+            }
+
+            _coreService.FrameRendering += DrawOverlay;
+
+            // After 200ms, stop drawing the overlay
+            Task.Run(async () =>
+            {
+                await Task.Delay(200);
+                _coreService.FrameRendering -= DrawOverlay;
+
+                if (blinkCount < 5)
+                {
+                    // After another 200ms, draw the overlay again, repeat six times
+                    await Task.Delay(200);
+                    BlinkDevice(device, blinkCount + 1);
+                }
+            });
+        }
+    }
+
+    public interface IDeviceService : IArtemisService
+    {
+        /// <summary>
+        /// Identifies the device by making it blink white 5 times
+        /// </summary>
+        /// <param name="device"></param>
+        void IdentifyDevice(Device device);
+    }
+}