Added layer shapes, editor is still WIP

src/Artemis.UI/Screens/Module/ProfileEditor/Visualization/Tools/VisualizationToolViewModel.cs

@@ -0,0 +1,45 @@
+using System.Windows;
+using System.Windows.Input;
+using Artemis.UI.Services.Interfaces;
+
+namespace Artemis.UI.Screens.Module.ProfileEditor.Visualization.Tools
+{
+    public abstract class VisualizationToolViewModel : CanvasViewModel
+    {
+        protected VisualizationToolViewModel(ProfileViewModel profileViewModel, IProfileEditorService profileEditorService)
+        {
+            // Not relevant for visualization tools as they overlay the entire canvas
+            X = 0;
+            Y = 0;
+
+            ProfileViewModel = profileViewModel;
+            ProfileEditorService = profileEditorService;
+            Cursor = Cursors.Arrow;
+        }
+
+        public ProfileViewModel ProfileViewModel { get; }
+        public IProfileEditorService ProfileEditorService { get; }
+        public Cursor Cursor { get; protected set; }
+        public bool IsMouseDown { get; protected set; }
+        public Point MouseDownStartPosition { get; protected set; }
+
+        public virtual void MouseDown(object sender, MouseButtonEventArgs e)
+        {
+            IsMouseDown = true;
+            MouseDownStartPosition = e.GetPosition((IInputElement) sender);
+        }
+
+        public virtual void MouseUp(object sender, MouseButtonEventArgs e)
+        {
+            IsMouseDown = false;
+        }
+
+        public virtual void MouseMove(object sender, MouseEventArgs e)
+        {
+        }
+
+        public virtual void MouseWheel(object sender, MouseWheelEventArgs e)
+        {
+        }
+    }
+}