MainWindow.xaml.cs

using System;
using System.Collections.ObjectModel;
using System.Collections.Specialized;
using System.ComponentModel;
using System.Diagnostics;
using System.Speech.Synthesis;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Input;
using System.Windows.Navigation;
using System.Windows.Shapes;
using BabySmash.Properties;
using System.Windows.Media;

namespace BabySmash
{
    public partial class MainWindow : Window
    {
        private readonly Controller controller;
        public Controller Controller { get { return controller; } }

        private UserControl customCursor;
        public UserControl CustomCursor { get { return customCursor; } set { customCursor = value; } }
        
        public void AddFigure(UserControl c)
        {
            this.figuresCanvas.Children.Add(c);
        }

        public void RemoveFigure(UserControl c)
        {
           this.figuresCanvas.Children.Remove(c);
        }

        public MainWindow(Controller c)
        {
            this.controller = c;
            this.DataContext = controller;
            InitializeComponent();

            //ResetCanvas();
        }

        protected override void OnMouseWheel(MouseWheelEventArgs e)
        {
           base.OnMouseWheel(e);
           controller.MouseWheel(this, e);
        }

        protected override void OnMouseUp(MouseButtonEventArgs e)
        {
           base.OnMouseUp(e);
           controller.MouseUp(this, e);
        }

        protected override void OnMouseDown(MouseButtonEventArgs e)
        {
           base.OnMouseDown(e);
           controller.MouseDown(this, e);
        }

        protected override void OnMouseEnter(MouseEventArgs e)
        {
           base.OnMouseEnter(e);
           AssertCursor();
           CustomCursor.Visibility = Visibility.Visible;
        }

        protected override void OnMouseLeave(MouseEventArgs e)
        {
           base.OnMouseLeave(e);
           CustomCursor.Visibility = Visibility.Hidden;
        }

        protected override void OnMouseMove(MouseEventArgs e)
        {
           base.OnMouseMove(e);
           if (controller.isOptionsDialogShown == false)
           {
               CustomCursor.Visibility = Visibility.Visible;
               Point p = e.GetPosition(mouseDragCanvas);
               double pX = p.X;
               double pY = p.Y;
               Cursor = Cursors.None;
               Canvas.SetTop(CustomCursor, pY);
               Canvas.SetLeft(CustomCursor, pX);
               Canvas.SetZIndex(CustomCursor, int.MaxValue);
           }
           controller.MouseMove(this, e);
        }
        
        protected override void OnKeyUp(KeyEventArgs e)
        {
            base.OnKeyUp(e);
            e.Handled = true;
            controller.ProcessKey(this, e);
        }

        protected override void OnLostMouseCapture(MouseEventArgs e)
        {
            base.OnLostMouseCapture(e);
            controller.LostMouseCapture(this, e);
        }

        internal void AssertCursor()
        {
           try
           {
              mouseCursorCanvas.Children.Clear();
              CustomCursor = Utils.GetCursor();
              if (CustomCursor.Parent != null)
              {
                 ((Canvas)CustomCursor.Parent).Children.Remove(CustomCursor);
              }
              CustomCursor.RenderTransform = new ScaleTransform(0.5, 0.5);
              CustomCursor.Name = "customCursor";
              mouseCursorCanvas.Children.Insert(0, CustomCursor); //in front!
              CustomCursor.Visibility = Visibility.Hidden;
           }
           catch (System.NotSupportedException)
           {
              //we can die here if we ALT-F4 while in the Options Dialog
           }

        }
    }
}