replaced CaretHighlight control by animated rectangle geometry

src/AddIns/DisplayBindings/AvalonEdit.AddIn/AvalonEdit.AddIn.csproj

@@ -94,10 +94,6 @@
     <Compile Include="Src\CodeEditorView.cs" />
     <Compile Include="Src\ContextActionsRenderer.cs" />
     <Compile Include="Src\ExpressionHighlightRenderer.cs" />
-    <Compile Include="Src\CaretHighlight.xaml.cs">
-      <DependentUpon>CaretHighlight.xaml</DependentUpon>
-      <SubType>Code</SubType>
-    </Compile>
     <Compile Include="Src\CaretHighlightAdorner.cs" />
     <Compile Include="Src\NewLineConsistencyCheck.cs" />
     <Compile Include="Src\SharpDevelopTextEditor.cs" />
@@ -165,7 +161,6 @@
     <EmbeddedResource Include="Resources\ReverseIncrementalSearchCursor.cur" />
   </ItemGroup>
   <ItemGroup>
-    <Page Include="Src\CaretHighlight.xaml" />
     <Page Include="Src\SharpDevelopCompletionWindow.xaml">
       <DependentUpon>SharpDevelopCompletionWindow.cs</DependentUpon>
     </Page>

src/AddIns/DisplayBindings/AvalonEdit.AddIn/Src/CaretHighlight.xaml

@@ -1,35 +0,0 @@
-<UserControl x:Class="ICSharpCode.AvalonEdit.AddIn.CaretHighlight"
-	xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
-	xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
-	<Grid HorizontalAlignment="Left" VerticalAlignment="Top">
-		<Border
-			Name="el"
-			CornerRadius="2"
-			BorderThickness="1"
-			BorderBrush="Black">
-			<Border.Triggers>
-				<EventTrigger RoutedEvent="Border.Loaded">
-					<BeginStoryboard>
-						<Storyboard>
-							<DoubleAnimation
-								Storyboard.TargetName="el"
-								Storyboard.TargetProperty="Width"
-								From="2" To="12" Duration="0:0:0.4"
-								AutoReverse="True" RepeatBehavior="1x" />
-							<DoubleAnimation
-								Storyboard.TargetName="el"
-								Storyboard.TargetProperty="Height"
-								From="17" To="27" Duration="0:0:0.4"
-								AutoReverse="True" RepeatBehavior="1x" />
-							<DoubleAnimation
-								Storyboard.TargetName="el"
-								Storyboard.TargetProperty="Opacity"
-								From="1" To="0" Duration="0:0:0.2" BeginTime="0:0:0.6"
-								RepeatBehavior="1x" />
-						</Storyboard>
-					</BeginStoryboard>
-				</EventTrigger>
-			</Border.Triggers>
-		</Border>
-	</Grid>
-</UserControl>

src/AddIns/DisplayBindings/AvalonEdit.AddIn/Src/CaretHighlight.xaml.cs

@@ -1,26 +0,0 @@
-// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
-// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)
-
-using System;
-using System.Collections.Generic;
-using System.Text;
-using System.Windows;
-using System.Windows.Controls;
-using System.Windows.Data;
-using System.Windows.Documents;
-using System.Windows.Input;
-using System.Windows.Media;
-
-namespace ICSharpCode.AvalonEdit.AddIn
-{
-	/// <summary>
-	/// Interaction logic for CaretHighlight.xaml
-	/// </summary>
-	public partial class CaretHighlight : UserControl
-	{
-		public CaretHighlight()
-		{
-			InitializeComponent();
-		}
-	}
-}

src/AddIns/DisplayBindings/AvalonEdit.AddIn/Src/CaretHighlightAdorner.cs

@@ -3,10 +3,12 @@
 
 using System;
 using System.Windows;
+using System.Windows.Controls;
 using System.Windows.Documents;
 using System.Windows.Media;
 using System.Windows.Media.Animation;
-using System.Windows.Threading;
+
+using ICSharpCode.AvalonEdit.Editing;
 
 namespace ICSharpCode.AvalonEdit.AddIn
 {
@@ -15,71 +17,37 @@ namespace ICSharpCode.AvalonEdit.AddIn
 	/// </summary>
 	public class CaretHighlightAdorner : Adorner
 	{
-		CaretHighlight highlight;
+		const double SizeFactor = 0.5;
 		
-		public CaretHighlightAdorner(UIElement adornedElement, Point origin)
-			: base(adornedElement)
-		{
-			this.Highlight = new CaretHighlight() {
-				RenderTransform = new TranslateTransform(origin.X, origin.Y),
-			};
-		}
+		Rect min, max;
+		Pen blackPen;
 		
-		/// <summary>
-		/// Gets/sets the visual child.
-		/// </summary>
-		protected CaretHighlight Highlight {
-			get { return highlight; }
-			set {
-				RemoveVisualChild(highlight);
-				highlight = value;
-				AddVisualChild(highlight);
-				InvalidateMeasure();
-			}
-		}
-
-		/// <summary>
-		/// Gets the visual child.
-		/// </summary>
-		protected override Visual GetVisualChild(int index)
-		{
-			if (index == 0 && highlight != null)
-				return highlight;
-			else
-				throw new ArgumentOutOfRangeException("index");
-		}
-
-		/// <summary>
-		/// Gets the number of visual children.
-		/// </summary>
-		protected override int VisualChildrenCount {
-			get { return highlight != null ? 1 : 0; }
-		}
-
-		/// <summary>
-		/// Measure the visual child.
-		/// </summary>
-		protected override Size MeasureOverride(Size availableSize)
+		public CaretHighlightAdorner(TextArea textArea)
+			: base(textArea.TextView)
 		{
-			if (highlight != null) {
-				highlight.Measure(availableSize);
-				return availableSize;
-			} else {
-				return base.MeasureOverride(availableSize);
-			}
+			Rect caret = textArea.Caret.CalculateCaretRectangle();
+			
+			this.min = caret;
+			this.max = new Rect(caret.Location, new Size(caret.Width + Math.Max(caret.Width, caret.Height) * SizeFactor, caret.Height + Math.Max(caret.Width, caret.Height) * SizeFactor));
+			
+			Vector centerOffset = new Vector(caret.Width / 2, caret.Height / 2);
+			
+			min.Offset(-textArea.TextView.ScrollOffset);
+			max.Offset(-textArea.TextView.ScrollOffset);
+			
+			max.Offset(-centerOffset);
+			
+			blackPen = new Pen(TextBlock.GetForeground(textArea.TextView).Clone(), 1);
 		}
-
-		/// <summary>
-		/// Arrange the visual child.
-		/// </summary>
-		protected override Size ArrangeOverride(Size finalSize)
+		
+		protected override void OnRender(DrawingContext drawingContext)
 		{
-			if (highlight != null) {
-				highlight.Arrange(new Rect(new Point(0, 0), finalSize));
-				return finalSize;
-			} else {
-				return base.ArrangeOverride(finalSize);
-			}
+			var geometry = new RectangleGeometry(max, 2, 2);
+			
+			geometry.BeginAnimation(RectangleGeometry.RectProperty, new RectAnimation(max, min, new Duration(TimeSpan.FromMilliseconds(400))) { AutoReverse = true });
+			blackPen.Brush.BeginAnimation(Brush.OpacityProperty, new DoubleAnimation(1, 0, new Duration(TimeSpan.FromMilliseconds(600))) { BeginTime = TimeSpan.FromMilliseconds(200), AutoReverse = true });
+			
+			drawingContext.DrawGeometry(null, blackPen, geometry);
 		}
 	}
 }

src/AddIns/DisplayBindings/AvalonEdit.AddIn/Src/CodeEditorView.cs

@@ -13,8 +13,8 @@ using System.Windows.Controls;
 using System.Windows.Controls.Primitives;
 using System.Windows.Documents;
 using System.Windows.Input;
-using System.Windows.Media;
 using System.Windows.Threading;
+
 using ICSharpCode.AvalonEdit.AddIn.Options;
 using ICSharpCode.AvalonEdit.AddIn.Snippets;
 using ICSharpCode.AvalonEdit.Editing;
@@ -463,7 +463,7 @@ namespace ICSharpCode.AvalonEdit.AddIn
 				return;
 			
 			AdornerLayer layer = AdornerLayer.GetAdornerLayer(textArea.TextView);
-			CaretHighlightAdorner adorner = new CaretHighlightAdorner(textArea.TextView, textArea.Caret.CalculateCaretRectangle().Location - textArea.TextView.ScrollOffset - new Vector(3, 6.75));
+			CaretHighlightAdorner adorner = new CaretHighlightAdorner(textArea);
 			layer.Add(adorner);
 			
 			WorkbenchSingleton.CallLater(TimeSpan.FromSeconds(1), (Action)(() => layer.Remove(adorner)));