Split device views/VMs for surface and profile editors

Added support for devices without images to the surface editor

src/Artemis.UI/ViewModels/Controls/SurfaceEditor/SurfaceDeviceViewModel.cs

@@ -0,0 +1,78 @@
+using System;
+using System.Collections.Generic;
+using System.Windows;
+using System.Windows.Input;
+using RGB.NET.Core;
+using Stylet;
+using Point = System.Windows.Point;
+
+namespace Artemis.UI.ViewModels.Controls.SurfaceEditor
+{
+    public class SurfaceDeviceViewModel : PropertyChangedBase
+    {
+        private double _dragOffsetX;
+        private double _dragOffsetY;
+        private readonly List<SurfaceLedViewModel> _leds;
+
+        public SurfaceDeviceViewModel(IRGBDevice device)
+        {
+            Device = device;
+            _leds = new List<SurfaceLedViewModel>();
+
+            foreach (var led in Device)
+                _leds.Add(new SurfaceLedViewModel(led));
+        }
+
+        public IRGBDevice Device { get; }
+        public SelectionStatus SelectionStatus { get; set; }
+        public Cursor Cursor { get; set; }
+
+        public IReadOnlyCollection<SurfaceLedViewModel> Leds => _leds.AsReadOnly();
+        public Rect DeviceRectangle => new Rect(Device.Location.X, Device.Location.Y, Device.Size.Width, Device.Size.Height);
+
+        public void StartMouseDrag(Point mouseStartPosition)
+        {
+            _dragOffsetX = Device.Location.X - mouseStartPosition.X;
+            _dragOffsetY = Device.Location.Y - mouseStartPosition.Y;
+        }
+
+        public void UpdateMouseDrag(Point mousePosition)
+        {
+            var roundedX = Math.Round((mousePosition.X + _dragOffsetX) / 10, 0, MidpointRounding.AwayFromZero) * 10;
+            var roundedY = Math.Round((mousePosition.Y + _dragOffsetY) / 10, 0, MidpointRounding.AwayFromZero) * 10;
+            Device.Location = new RGB.NET.Core.Point(roundedX, roundedY);
+        }
+
+        public void FinishMouseDrag(Point mouseEndPosition)
+        {
+            // TODO: Save and update
+        }
+
+        // ReSharper disable once UnusedMember.Global - Called from view
+        public void MouseEnter()
+        {
+            if (SelectionStatus == SelectionStatus.None)
+            {
+                SelectionStatus = SelectionStatus.Hover;
+                Cursor = Cursors.Hand;
+            }
+        }
+
+        // ReSharper disable once UnusedMember.Global - Called from view
+        public void MouseLeave()
+        {
+            if (SelectionStatus == SelectionStatus.Hover)
+            {
+                SelectionStatus = SelectionStatus.None;
+                Cursor = Cursors.Arrow;
+            }
+        }
+    }
+
+    public enum SelectionStatus
+    {
+        None,
+        Hover,
+        Selected
+    }
+}