Added mouse clicks/events

Not sure the styling system is going to work at this point...

Perspex.Windows/Window.cs

@@ -9,8 +9,10 @@ namespace Perspex.Windows
     using System;
     using System.ComponentModel;
     using System.Diagnostics.CodeAnalysis;
+    using System.Linq;
     using System.Runtime.InteropServices;
     using Perspex.Controls;
+    using Perspex.Input;
     using Perspex.Layout;
     using Perspex.Windows.Interop;
     using Perspex.Windows.Threading;
@@ -132,6 +134,26 @@ namespace Perspex.Windows
             }
         }
 
+        private void MouseDown(Visual visual, Point p)
+        {
+            Visual hit = visual.GetVisualAt(p);
+
+            if (hit != null)
+            {
+                Interactive source = (hit as Interactive) ?? hit.GetVisualAncestor<Interactive>();
+
+                if (source != null)
+                {
+                    source.RaiseEvent(new MouseEventArgs
+                    {
+                        RoutedEvent = Control.MouseLeftButtonDownEvent,
+                        OriginalSource = source,
+                        Source = source,
+                    });
+                }
+            }
+        }
+
         private void MouseMove(Visual visual, Point p)
         {
             Control control = visual as Control;
@@ -147,6 +169,26 @@ namespace Perspex.Windows
             }
         }
 
+        private void MouseUp(Visual visual, Point p)
+        {
+            Visual hit = visual.GetVisualAt(p);
+
+            if (hit != null)
+            {
+                Interactive source = (hit as Interactive) ?? hit.GetVisualAncestor<Interactive>();
+
+                if (source != null)
+                {
+                    source.RaiseEvent(new MouseEventArgs
+                    {
+                        RoutedEvent = Control.MouseLeftButtonUpEvent,
+                        OriginalSource = source,
+                        Source = source,
+                    });
+                }
+            }
+        }
+
         [SuppressMessage("Microsoft.StyleCop.CSharp.NamingRules", "SA1305:FieldNamesMustNotUseHungarianNotation", Justification = "Using Win32 naming for consistency.")]
         private IntPtr WndProc(IntPtr hWnd, uint msg, IntPtr wParam, IntPtr lParam)
         {
@@ -164,13 +206,13 @@ namespace Perspex.Windows
                 ////            KeyInterop.KeyFromVirtualKey((int)wParam)));
                 ////    break;
 
-                ////case UnmanagedMethods.WindowsMessage.WM_LBUTTONDOWN:
-                ////    InputManager.Current.ProcessInput(new RawMouseEventArgs(mouse, RawMouseEventType.LeftButtonDown));
-                ////    break;
+                case UnmanagedMethods.WindowsMessage.WM_LBUTTONDOWN:
+                    this.MouseDown(this, new Point((uint)lParam & 0xffff, (uint)lParam >> 16));
+                    break;
 
-                ////case UnmanagedMethods.WindowsMessage.WM_LBUTTONUP:
-                ////    InputManager.Current.ProcessInput(new RawMouseEventArgs(mouse, RawMouseEventType.LeftButtonUp));
-                ////    break;
+                case UnmanagedMethods.WindowsMessage.WM_LBUTTONUP:
+                    this.MouseUp(this, new Point((uint)lParam & 0xffff, (uint)lParam >> 16));
+                    break;
 
                 case UnmanagedMethods.WindowsMessage.WM_MOUSEMOVE:
                     this.MouseMove(this, new Point((uint)lParam & 0xffff, (uint)lParam >> 16));

Perspex/Controls/Button.cs

@@ -10,6 +10,19 @@ namespace Perspex.Controls
 
     public class Button : ContentControl
     {
+        public Button()
+        {
+            this.GetObservable(MouseLeftButtonDownEvent).Subscribe(e =>
+            {
+                this.Classes.Add(":pressed");
+            });
+
+            this.GetObservable(MouseLeftButtonUpEvent).Subscribe(e =>
+            {
+                this.Classes.Remove(":pressed");
+            });
+        }
+
         protected override Visual DefaultTemplate()
         {
             Border border = new Border();

Perspex/Controls/Control.cs

@@ -11,6 +11,7 @@ namespace Perspex.Controls
     using System.Collections.ObjectModel;
     using System.Diagnostics.Contracts;
     using System.Reactive.Linq;
+    using Perspex.Input;
     using Perspex.Layout;
     using Perspex.Media;
 
@@ -30,7 +31,7 @@ namespace Perspex.Controls
         Bottom,
     }
 
-    public abstract class Control : Visual, ILayoutable
+    public abstract class Control : Interactive, ILayoutable
     {
         public static readonly ReadOnlyPerspexProperty<Control> ParentProperty =
             new ReadOnlyPerspexProperty<Control>(ParentPropertyRW);
@@ -59,6 +60,12 @@ namespace Perspex.Controls
         public static readonly PerspexProperty<VerticalAlignment> VerticalAlignmentProperty =
             PerspexProperty.Register<Control, VerticalAlignment>("VerticalAlignment");
 
+        public static readonly RoutedEvent<MouseEventArgs> MouseLeftButtonDownEvent =
+            RoutedEvent.Register<Control, MouseEventArgs>("MouseLeftButtonDown", RoutingStrategy.Bubble);
+
+        public static readonly RoutedEvent<MouseEventArgs> MouseLeftButtonUpEvent =
+            RoutedEvent.Register<Control, MouseEventArgs>("MouseLeftButtonUp", RoutingStrategy.Bubble);
+
         internal static readonly PerspexProperty<Control> ParentPropertyRW =
             PerspexProperty.Register<Control, Control>("Parent");
 
@@ -85,6 +92,35 @@ namespace Perspex.Controls
             this.GetObservable(BackgroundProperty).Skip(1).Subscribe(_ => this.InvalidateMeasure());
         }
 
+        public event EventHandler<MouseEventArgs> MouseLeftButtonDown
+        {
+            add
+            {
+                Contract.Requires<NullReferenceException>(value != null);
+                this.AddHandler(MouseLeftButtonDownEvent, value); 
+            }
+
+            remove 
+            {
+                Contract.Requires<NullReferenceException>(value != null);
+                this.RemoveHandler(MouseLeftButtonDownEvent, value); 
+            }
+        }
+
+        public event EventHandler<MouseEventArgs> MouseLeftButtonUp
+        {
+            add 
+            {
+                Contract.Requires<NullReferenceException>(value != null);
+                this.AddHandler(MouseLeftButtonUpEvent, value); 
+            }
+            remove 
+            {
+                Contract.Requires<NullReferenceException>(value != null);
+                this.RemoveHandler(MouseLeftButtonUpEvent, value); 
+            }
+        }
+
         public Brush Background
         {
             get { return this.GetValue(BackgroundProperty); }

Perspex/Input/MouseEventArgs.cs

@@ -0,0 +1,14 @@
+// -----------------------------------------------------------------------
+// <copyright file="MouseEventArgs.cs" company="Steven Kirk">
+// Copyright 2013 MIT Licence. See licence.md for more information.
+// </copyright>
+// -----------------------------------------------------------------------
+
+namespace Perspex.Input
+{
+    using System;
+
+    public class MouseEventArgs : RoutedEventArgs
+    {
+    }
+}

Perspex/Interactive.cs

@@ -0,0 +1,106 @@
+// -----------------------------------------------------------------------
+// <copyright file="Interactive.cs" company="Steven Kirk">
+// Copyright 2014 MIT Licence. See licence.md for more information.
+// </copyright>
+// -----------------------------------------------------------------------
+
+namespace Perspex
+{
+    using System;
+    using System.Collections.Generic;
+    using System.Diagnostics.Contracts;
+    using System.Reactive;
+    using System.Reactive.Linq;
+
+    public class Interactive : Visual
+    {
+        private Dictionary<RoutedEvent, List<Delegate>> eventHandlers = new Dictionary<RoutedEvent, List<Delegate>>();
+
+        public void AddHandler(RoutedEvent routedEvent, Delegate handler)
+        {
+            Contract.Requires<NullReferenceException>(routedEvent != null);
+            Contract.Requires<NullReferenceException>(handler != null);
+
+            List<Delegate> delegates;
+
+            if (!this.eventHandlers.TryGetValue(routedEvent, out delegates))
+            {
+                delegates = new List<Delegate>();
+                this.eventHandlers.Add(routedEvent, delegates);
+            }
+
+            delegates.Add(handler);
+        }
+
+        public IObservable<EventPattern<T>> GetObservable<T>(RoutedEvent<T> routedEvent) where T : RoutedEventArgs
+        {
+            Contract.Requires<NullReferenceException>(routedEvent != null);
+
+            return Observable.FromEventPattern<T>(
+                handler => this.AddHandler(routedEvent, handler),
+                handler => this.RemoveHandler(routedEvent, handler));
+        }
+
+        public void RemoveHandler(RoutedEvent routedEvent, Delegate handler)
+        {
+            Contract.Requires<NullReferenceException>(routedEvent != null);
+            Contract.Requires<NullReferenceException>(handler != null);
+
+            List<Delegate> delegates;
+
+            if (this.eventHandlers.TryGetValue(routedEvent, out delegates))
+            {
+                delegates.Remove(handler);
+            }
+        }
+
+        public void RaiseEvent(RoutedEventArgs e)
+        {
+            Contract.Requires<NullReferenceException>(e != null);
+
+            if (e.RoutedEvent != null)
+            {
+                switch (e.RoutedEvent.RoutingStrategy)
+                {
+                    case RoutingStrategy.Bubble:
+                        this.BubbleEvent(e);
+                        break;
+                    case RoutingStrategy.Direct:
+                        this.RaiseEventImpl(e);
+                        break;
+                    default:
+                        throw new NotImplementedException();
+                }
+            }
+        }
+
+        private void BubbleEvent(RoutedEventArgs e)
+        {
+            Contract.Requires<NullReferenceException>(e != null);
+
+            Interactive target = this;
+
+            while (target != null)
+            {
+                target.RaiseEventImpl(e);
+                target = target.GetVisualAncestor<Interactive>();
+            }
+        }
+
+        private void RaiseEventImpl(RoutedEventArgs e)
+        {
+            Contract.Requires<NullReferenceException>(e != null);
+
+            List<Delegate> delegates;
+
+            if (this.eventHandlers.TryGetValue(e.RoutedEvent, out delegates))
+            {
+                foreach (Delegate handler in delegates)
+                {
+                    // TODO: Implement the Handled stuff.
+                    handler.DynamicInvoke(this, e);
+                }
+            }
+        }
+    }
+}

Perspex/Perspex.csproj

@@ -76,6 +76,8 @@
     <Compile Include="Controls\ContentControl.cs" />
     <Compile Include="Controls\Control.cs" />
     <Compile Include="Controls\TextBlock.cs" />
+    <Compile Include="Input\MouseEventArgs.cs" />
+    <Compile Include="Interactive.cs" />
     <Compile Include="IBindingDescription.cs" />
     <Compile Include="IStyle.cs" />
     <Compile Include="Layout\ILayoutable.cs" />
@@ -90,6 +92,7 @@
     <Compile Include="Media\Matrix.cs" />
     <Compile Include="Media\Pen.cs" />
     <Compile Include="Media\SolidColorBrush.cs" />
+    <Compile Include="RoutedEvent.cs" />
     <Compile Include="PerspexList.cs" />
     <Compile Include="PerspexObject.cs" />
     <Compile Include="PerspexProperty.cs" />
@@ -97,6 +100,7 @@
     <Compile Include="Point.cs" />
     <Compile Include="ReadOnlyPerspexProperty.cs" />
     <Compile Include="Match.cs" />
+    <Compile Include="RoutedEventArgs.cs" />
     <Compile Include="Selectors.cs" />
     <Compile Include="ServiceLocator.cs" />
     <Compile Include="Setter.cs" />
@@ -110,6 +114,7 @@
     <Compile Include="Thickness.cs" />
     <Compile Include="Visual.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
+    <Compile Include="VisualExtensions.cs" />
   </ItemGroup>
   <ItemGroup>
     <Reference Include="Splat">

Perspex/RoutedEvent.cs

@@ -0,0 +1,87 @@
+// -----------------------------------------------------------------------
+// <copyright file="RoutedEvent.cs" company="Steven Kirk">
+// Copyright 2014 MIT Licence. See licence.md for more information.
+// </copyright>
+// -----------------------------------------------------------------------
+
+namespace Perspex
+{
+    using System;
+    using System.Diagnostics.Contracts;
+    using System.Reflection;
+
+    public enum RoutingStrategy
+    {
+        Tunnel,
+        Bubble,
+        Direct,
+    }
+
+    public class RoutedEvent
+    {
+        public RoutedEvent(
+            string name, 
+            RoutingStrategy routingStrategy,
+            Type eventArgsType,
+            Type ownerType)
+        {
+            Contract.Requires<NullReferenceException>(name != null);
+            Contract.Requires<NullReferenceException>(eventArgsType != null);
+            Contract.Requires<NullReferenceException>(ownerType != null);
+            Contract.Requires<InvalidCastException>(typeof(RoutedEventArgs).GetTypeInfo().IsAssignableFrom(eventArgsType.GetTypeInfo()));
+            Contract.Requires<InvalidCastException>(typeof(Interactive).GetTypeInfo().IsAssignableFrom(ownerType.GetTypeInfo()));
+
+            this.EventArgsType = eventArgsType;
+            this.Name = name;
+            this.OwnerType = ownerType;
+            this.RoutingStrategy = routingStrategy;
+        }
+
+        public Type EventArgsType 
+        { 
+            get; 
+            private set; 
+        }
+
+        public string Name 
+        { 
+            get; 
+            private set; 
+        }
+
+        public Type OwnerType 
+        { 
+            get; 
+            private set; 
+        }
+
+        public RoutingStrategy RoutingStrategy 
+        { 
+            get; 
+            private set; 
+        }
+
+        public static RoutedEvent<TEventArgs> Register<TOwner, TEventArgs>(
+            string name,
+            RoutingStrategy routingStrategy)
+                where TOwner : Interactive
+                where TEventArgs : RoutedEventArgs
+        {
+            Contract.Requires<NullReferenceException>(name != null);
+
+            return new RoutedEvent<TEventArgs>(name, routingStrategy, typeof(TOwner));
+        }
+    }
+
+    public class RoutedEvent<TEventArgs> : RoutedEvent
+        where TEventArgs : RoutedEventArgs
+    {
+        public RoutedEvent(string name, RoutingStrategy routingStrategy, Type ownerType)
+            : base(name, routingStrategy, typeof(TEventArgs), ownerType)
+        {
+            Contract.Requires<NullReferenceException>(name != null);
+            Contract.Requires<NullReferenceException>(ownerType != null);
+            Contract.Requires<InvalidCastException>(typeof(Interactive).GetTypeInfo().IsAssignableFrom(ownerType.GetTypeInfo()));
+        }
+    }
+}

Perspex/RoutedEventArgs.cs

@@ -0,0 +1,36 @@
+// -----------------------------------------------------------------------
+// <copyright file="RoutedEventArgs.cs" company="Steven Kirk">
+// Copyright 2014 MIT Licence. See licence.md for more information.
+// </copyright>
+// -----------------------------------------------------------------------
+
+namespace Perspex
+{
+    using System;
+
+    public class RoutedEventArgs : EventArgs
+    {
+        public RoutedEventArgs()
+        {
+        }
+
+        public RoutedEventArgs(RoutedEvent routedEvent)
+        {
+            this.RoutedEvent = routedEvent;
+        }
+
+        public RoutedEventArgs(RoutedEvent routedEvent, object source)
+        {
+            this.RoutedEvent = routedEvent;
+            this.Source = source;
+        }
+
+        public bool Handled { get; set; }
+
+        public object OriginalSource { get; set; }
+
+        public RoutedEvent RoutedEvent { get; set; }
+
+        public object Source { get; set; }
+    }
+}

Perspex/Themes/Default/ButtonStyle.cs

@@ -31,7 +31,15 @@ namespace Perspex.Themes.Default
                         new Setter (Button.BackgroundProperty, new SolidColorBrush(0xffbee6fd)),
                         new Setter (Button.BorderBrushProperty, new SolidColorBrush(0xff3c7fb1)),
                     },
-                }
+                },
+                new Style(x => x.Select<Button>().Class(":pressed"))
+                {
+                    Setters = new[]
+                    {
+                        new Setter (Button.BackgroundProperty, new SolidColorBrush(0xffc4e5f6)),
+                        new Setter (Button.BorderBrushProperty, new SolidColorBrush(0xff2c628b)),
+                    },
+                },
             });
         }
     }

Perspex/VisualExtensions.cs

@@ -0,0 +1,65 @@
+// -----------------------------------------------------------------------
+// <copyright file="VisualExtensions.cs" company="Steven Kirk">
+// Copyright 2014 MIT Licence. See licence.md for more information.
+// </copyright>
+// -----------------------------------------------------------------------
+
+namespace Perspex
+{
+    using System;
+    using System.Diagnostics.Contracts;
+    using System.Linq;
+
+    public static class VisualExtensions
+    {
+        public static T GetVisualAncestor<T>(this Visual visual) where T : Visual
+        {
+            Contract.Requires<NullReferenceException>(visual != null);
+
+            visual = visual.VisualParent;
+
+            while (visual != null)
+            {
+                if (visual is T)
+                {
+                    return (T)visual;
+                }
+                else
+                {
+                    visual = visual.VisualParent;
+                }
+            }
+
+            return null;
+        }
+
+        public static Visual GetVisualAt(this Visual visual, Point p)
+        {
+            Contract.Requires<NullReferenceException>(visual != null);
+
+            if (visual.Bounds.Contains(p))
+            {
+                p -= visual.Bounds.Position;
+
+                if (visual.VisualChildren.Any())
+                {
+                    foreach (Visual child in visual.VisualChildren)
+                    {
+                        Visual hit = child.GetVisualAt(p);
+
+                        if (hit != null)
+                        {
+                            return hit;
+                        }
+                    }
+                }
+                else
+                {
+                    return visual;
+                }
+            }
+
+            return null;
+        }
+    }
+}