Support for drawing a Polyline

samples/XamlDesigner/XamlDesigner.sln

@@ -1,7 +1,9 @@
 
-Microsoft Visual Studio Solution File, Format Version 11.00
-# Visual Studio 2010
-# SharpDevelop 5.0
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 2012
+# SharpDevelop 5.1
+VisualStudioVersion = 12.0.20827.3
+MinimumVisualStudioVersion = 10.0.40219.1
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "XamlDesigner", "XamlDesigner.csproj", "{27DA2B5C-2AAA-4478-AB00-3E184273C241}"
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "WpfDesign", "..\..\src\AddIns\DisplayBindings\WpfDesign\WpfDesign\Project\WpfDesign.csproj", "{66A378A1-E9F4-4AD5-8946-D0EC06C2902F}"

src/AddIns/DisplayBindings/WpfDesign/WpfDesign.Designer/Project/Extensions/CanvasDrawLineBehavior.cs

@@ -29,7 +29,7 @@ using ICSharpCode.WpfDesign.Designer.Services;
 namespace ICSharpCode.WpfDesign.Designer.Extensions
 {
 	[ExtensionFor(typeof(Canvas))]
-	public class CanvasDrawLineBehavior : BehaviorExtension, IDrawItemBehavior
+	public class CanvasDrawLineBehavior : BehaviorExtension, IDrawItemExtension
 	{
 		private ChangeGroup changeGroup;
 
@@ -42,14 +42,6 @@ namespace ICSharpCode.WpfDesign.Designer.Extensions
 			return item;
 		}
 
-		protected override void OnInitialized()
-		{
-			base.OnInitialized();
-			if (ExtendedItem.ContentProperty == null || Metadata.IsPlacementDisabled(ExtendedItem.ComponentType))
-				return;
-			ExtendedItem.AddBehavior(typeof(IDrawItemBehavior), this);
-		}
-
 		#region IDrawItemBehavior implementation
 
 		public bool CanItemBeDrawn(Type createItemType)
@@ -82,7 +74,6 @@ namespace ICSharpCode.WpfDesign.Designer.Extensions
 		}
 
 		#endregion
-	}
 		
 		sealed class DrawLineMouseGesture : ClickOrDragMouseGesture
 		{
@@ -129,3 +120,4 @@ namespace ICSharpCode.WpfDesign.Designer.Extensions
 			
 		}
 	}
+}

src/AddIns/DisplayBindings/WpfDesign/WpfDesign.Designer/Project/Extensions/CanvasDrawPolyLineBehavior.cs

@@ -0,0 +1,148 @@
+// Copyright (c) 2014 AlphaSierraPapa for the SharpDevelop Team
+// 
+// Permission is hereby granted, free of charge, to any person obtaining a copy of this
+// software and associated documentation files (the "Software"), to deal in the Software
+// without restriction, including without limitation the rights to use, copy, modify, merge,
+// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
+// to whom the Software is furnished to do so, subject to the following conditions:
+// 
+// The above copyright notice and this permission notice shall be included in all copies or
+// substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
+// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+using System;
+using System.Linq;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Input;
+using System.Windows.Media;
+using System.Windows.Shapes;
+using ICSharpCode.WpfDesign.Extensions;
+using ICSharpCode.WpfDesign.Designer.Services;
+
+namespace ICSharpCode.WpfDesign.Designer.Extensions
+{
+	[ExtensionFor(typeof(Canvas))]
+	public class CanvasDrawPolyLineBehavior : BehaviorExtension, IDrawItemExtension
+	{
+		private ChangeGroup changeGroup;
+
+		DesignItem CreateItem(DesignContext context, Type componentType)
+		{
+			object newInstance = context.Services.ExtensionManager.CreateInstanceWithCustomInstanceFactory(componentType, null);
+			DesignItem item = context.Services.Component.RegisterComponentForDesigner(newInstance);
+			changeGroup = item.OpenGroup("Draw Polyline");
+			context.Services.ExtensionManager.ApplyDefaultInitializers(item);
+			return item;
+		}
+
+		#region IDrawItemBehavior implementation
+
+		public bool CanItemBeDrawn(Type createItemType)
+		{
+			return createItemType == typeof(Polyline);
+		}
+
+		public void StartDrawItem(DesignItem clickedOn, Type createItemType, IDesignPanel panel, System.Windows.Input.MouseEventArgs e)
+		{
+			var createdItem = CreateItem(panel.Context, createItemType);
+
+			var startPoint = e.GetPosition(clickedOn.View);
+			var operation = PlacementOperation.TryStartInsertNewComponents(clickedOn,
+			                                                               new DesignItem[] { createdItem },
+			                                                               new Rect[] { new Rect(startPoint.X, startPoint.Y, double.NaN, double.NaN) },
+			                                                               PlacementType.AddItem);
+			if (operation != null) {
+				createdItem.Services.Selection.SetSelectedComponents(new DesignItem[] { createdItem });
+				operation.Commit();
+			}
+			
+			createdItem.Properties[Shape.StrokeProperty].SetValue(Colors.Black);
+			createdItem.Properties[Shape.StrokeThicknessProperty].SetValue(2d);
+			createdItem.Properties[Shape.StretchProperty].SetValue(Stretch.None);
+			
+			createdItem.Properties[Polyline.PointsProperty].CollectionElements.Add(createdItem.Services.Component.RegisterComponentForDesigner(new Point(0,0)));
+			
+			new DrawPolylineMouseGesture(createdItem, clickedOn.View, changeGroup).Start(panel, (MouseButtonEventArgs) e);
+		}
+
+		#endregion
+		
+		sealed class DrawPolylineMouseGesture : ClickOrDragMouseGesture
+		{
+			private ChangeGroup changeGroup;
+			private DesignItem newLine;
+			private Point startPoint;
+
+			public DrawPolylineMouseGesture(DesignItem newLine, IInputElement relativeTo, ChangeGroup changeGroup)
+			{
+				this.newLine = newLine;
+				this.positionRelativeTo = relativeTo;
+				this.changeGroup = changeGroup;
+				
+				startPoint = Mouse.GetPosition(null);
+			}
+			
+			protected override void OnPreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
+			{
+				e.Handled = true;
+				base.OnPreviewMouseLeftButtonDown(sender, e);
+			}
+			
+			protected override void OnMouseMove(object sender, MouseEventArgs e)
+			{
+				var delta = e.GetPosition(null) - startPoint;
+				var point = new Point(delta.X, delta.Y);
+				
+				if (((Polyline)newLine.View).Points.Count <= 1)
+					newLine.Properties[Polyline.PointsProperty].CollectionElements.Add(newLine.Services.Component.RegisterComponentForDesigner(point));
+				newLine.Properties[Polyline.PointsProperty].CollectionElements.RemoveAt(((Polyline)newLine.View).Points.Count - 1);
+				newLine.Properties[Polyline.PointsProperty].CollectionElements.Add(newLine.Services.Component.RegisterComponentForDesigner(point));
+			}
+			
+			protected override void OnMouseUp(object sender, MouseButtonEventArgs e)
+			{
+				var delta = e.GetPosition(null) - startPoint;
+				var point = new Point(delta.X, delta.Y);
+				
+				newLine.Properties[Polyline.PointsProperty].CollectionElements.Add(newLine.Services.Component.RegisterComponentForDesigner(point));
+			}
+			
+			protected override void OnMouseDoubleClick(object sender, MouseButtonEventArgs e)
+			{
+				base.OnMouseDoubleClick(sender, e);
+				
+				newLine.Properties[Polyline.PointsProperty].CollectionElements.RemoveAt(((Polyline)newLine.View).Points.Count - 1);
+				
+				if (changeGroup != null)
+				{
+					changeGroup.Commit();
+					changeGroup = null;
+				}
+				
+				Stop();
+			}
+
+			protected override void OnStopped()
+			{
+				if (changeGroup != null)
+				{
+					changeGroup.Abort();
+					changeGroup = null;
+				}
+				if (services.Tool.CurrentTool is CreateComponentTool)
+				{
+					services.Tool.CurrentTool = services.Tool.PointerTool;
+				}
+				base.OnStopped();
+			}
+			
+		}
+	}
+}

src/AddIns/DisplayBindings/WpfDesign/WpfDesign.Designer/Project/Services/CreateComponentTool.cs

@@ -16,6 +16,7 @@
 // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 // DEALINGS IN THE SOFTWARE.
 
+using System.Linq;
 using System.Windows;
 using System;
 using System.Diagnostics;
@@ -202,7 +203,8 @@ namespace ICSharpCode.WpfDesign.Designer.Services
 				IDesignPanel designPanel = (IDesignPanel)sender;
 				DesignPanelHitTestResult result = designPanel.HitTest(e.GetPosition(designPanel), false, true, HitTestType.Default);
 				if (result.ModelHit != null) {
-					var drawItembehavior = result.ModelHit.GetBehavior<IDrawItemBehavior>();
+					var darwItemBehaviors = result.ModelHit.Extensions.OfType<IDrawItemExtension>();
+					var drawItembehavior = darwItemBehaviors.FirstOrDefault(x => x.CanItemBeDrawn(componentType));
 					if (drawItembehavior != null && drawItembehavior.CanItemBeDrawn(componentType)) {
 						drawItembehavior.StartDrawItem(result.ModelHit, componentType, designPanel, e);
 					}

src/AddIns/DisplayBindings/WpfDesign/WpfDesign.Designer/Project/Services/MouseGestureBase.cs

@@ -18,6 +18,8 @@
 
 using System;
 using System.Diagnostics;
+using System.Windows;
+using System.Windows.Controls;
 using System.Windows.Input;
 
 namespace ICSharpCode.WpfDesign.Designer.Services
@@ -71,6 +73,10 @@ namespace ICSharpCode.WpfDesign.Designer.Services
 			designPanel.MouseMove += OnMouseMove;
 			designPanel.MouseUp += OnMouseUp;
 			designPanel.KeyDown += OnKeyDown;
+			designPanel.PreviewMouseLeftButtonDown += OnPreviewMouseLeftButtonDown;
+			designPanel.PreviewMouseLeftButtonUp += OnPreviewMouseLeftButtonUp;
+			designPanel.PreviewMouseRightButtonDown += OnPreviewMouseRightButtonDown;
+			designPanel.PreviewMouseRightButtonUp += OnPreviewMouseRightButtonUp;
 		}
 		
 		void UnRegisterEvents()
@@ -80,6 +86,10 @@ namespace ICSharpCode.WpfDesign.Designer.Services
 			designPanel.MouseMove -= OnMouseMove;
 			designPanel.MouseUp -= OnMouseUp;
 			designPanel.KeyDown -= OnKeyDown;
+			designPanel.PreviewMouseLeftButtonDown -= OnPreviewMouseLeftButtonDown;
+			designPanel.PreviewMouseLeftButtonUp -= OnPreviewMouseLeftButtonUp;
+			designPanel.PreviewMouseRightButtonDown -= OnPreviewMouseRightButtonDown;
+			designPanel.PreviewMouseRightButtonUp -= OnPreviewMouseRightButtonUp;
 		}
 		
 		void OnKeyDown(object sender, KeyEventArgs e)
@@ -95,10 +105,27 @@ namespace ICSharpCode.WpfDesign.Designer.Services
 			Stop();
 		}
 		
-		protected virtual void OnMouseDown(object sender, MouseButtonEventArgs e)
+		protected virtual void OnPreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
 		{
+			if (MouseButtonHelper.IsDoubleClick(sender, e))
+				OnMouseDoubleClick(sender, e);
 		}
 		
+		protected virtual void OnPreviewMouseLeftButtonUp(object sender, MouseButtonEventArgs e)
+		{ }
+		
+		protected virtual void OnPreviewMouseRightButtonDown(object sender, MouseButtonEventArgs e)
+		{ }
+		
+		protected virtual void OnPreviewMouseRightButtonUp(object sender, MouseButtonEventArgs e)
+		{ }
+
+		protected virtual void OnMouseDoubleClick(object sender, MouseButtonEventArgs e)
+		{ }
+		
+		protected virtual void OnMouseDown(object sender, MouseButtonEventArgs e)
+		{ }
+		
 		protected virtual void OnMouseMove(object sender, MouseEventArgs e)
 		{
 		}
@@ -119,5 +146,47 @@ namespace ICSharpCode.WpfDesign.Designer.Services
 		
 		protected virtual void OnStarted(MouseButtonEventArgs e) {}
 		protected virtual void OnStopped() {}
+		
+		static class MouseButtonHelper
+		{
+			private const long k_DoubleClickSpeed = 500;
+			private const double k_MaxMoveDistance = 10;
+			
+			private static long _LastClickTicks = 0;
+			private static Point _LastPosition;
+			private static WeakReference _LastSender;
+			
+			internal static bool IsDoubleClick(object sender, MouseButtonEventArgs e)
+			{
+				Point position = e.GetPosition(null);
+				long clickTicks = DateTime.Now.Ticks;
+				long elapsedTicks = clickTicks - _LastClickTicks;
+				long elapsedTime = elapsedTicks / TimeSpan.TicksPerMillisecond;
+				bool quickClick = (elapsedTime <= k_DoubleClickSpeed);
+				bool senderMatch = (_LastSender != null && sender.Equals(_LastSender.Target));
+				
+				if (senderMatch && quickClick && Distance(position, _LastPosition) <= k_MaxMoveDistance)
+				{
+					// Double click!
+					_LastClickTicks = 0;
+					_LastSender = null;
+					return true;
+				}
+				
+				// Not a double click
+				_LastClickTicks = clickTicks;
+				_LastPosition = position;
+				if (!quickClick)
+					_LastSender = new WeakReference(sender);
+				return false;
+			}
+			
+			private static double Distance(Point pointA, Point pointB)
+			{
+				double x = pointA.X - pointB.X;
+				double y = pointA.Y - pointB.Y;
+				return Math.Sqrt(x * x + y * y);
+			}
+		}
 	}
 }

src/AddIns/DisplayBindings/WpfDesign/WpfDesign.Designer/Project/WpfDesign.Designer.csproj

@@ -87,6 +87,7 @@
     <Compile Include="Controls\RenderTransformOriginThumb.cs" />
     <Compile Include="Extensions\BorderForImageControl.cs" />
     <Compile Include="Extensions\CanvasDrawLineBehavior.cs" />
+    <Compile Include="Extensions\CanvasDrawPolyLineBehavior.cs" />
     <Compile Include="Extensions\DefaultCommandsContextMenu.xaml.cs">
       <DependentUpon>DefaultCommandsContextMenu.xaml</DependentUpon>
       <SubType>Code</SubType>

src/AddIns/DisplayBindings/WpfDesign/WpfDesign/Project/DrawItemExtension.cs

@@ -27,7 +27,7 @@ namespace ICSharpCode.WpfDesign
 	/// Behavior interface implemented by container elements to support resizing
 	/// drawing new Elements
 	/// </summary>
-	public interface IDrawItemBehavior
+	public interface IDrawItemExtension
 	{
 		bool CanItemBeDrawn(Type createItemType);
 		void StartDrawItem(DesignItem clickedOn, Type createItemType, IDesignPanel panel, MouseEventArgs e);

src/AddIns/DisplayBindings/WpfDesign/WpfDesign/Project/WpfDesign.csproj

@@ -73,7 +73,7 @@
     <Compile Include="Adorners\AdornerProvider.cs" />
     <Compile Include="Adorners\AdornerProviderClasses.cs" />
     <Compile Include="Adorners\RelativePlacement.cs" />
-    <Compile Include="DrawItemBehavior.cs" />
+    <Compile Include="DrawItemExtension.cs" />
     <Compile Include="DummyValueInsteadOfNullTypeDescriptionProvider.cs" />
     <Compile Include="ExtensionMethods.cs" />
     <Compile Include="Extensions\ExtensionAttribute.cs" />