From c62cfbcad7850eb4c2db47ee088500580c5a18f1 Mon Sep 17 00:00:00 2001
From: Daniel Grunwald <daniel@danielgrunwald.de>
Date: Thu, 4 Jun 2009 19:58:19 +0000
Subject: [PATCH] AvalonEdit: allow setting the caret color.

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/trunk@4233 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61
---
 .../ICSharpCode.AvalonEdit/Editing/Caret.cs   | 14 +++++++++++--
 .../Editing/CaretLayer.cs                     |  8 +++++++-
 .../Rendering/TextView.cs                     | 20 +++++++++++++++++++
 3 files changed, 39 insertions(+), 3 deletions(-)

diff --git a/src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/Editing/Caret.cs b/src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/Editing/Caret.cs
index cdeed6b49b..e7b903edae 100644
--- a/src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/Editing/Caret.cs
+++ b/src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/Editing/Caret.cs
@@ -5,15 +5,17 @@
 //     <version>$Revision$</version>
 // </file>
 
-using ICSharpCode.AvalonEdit.Utils;
 using System;
 using System.Diagnostics;
 using System.Windows;
 using System.Windows.Documents;
+using System.Windows.Media;
 using System.Windows.Media.TextFormatting;
 using System.Windows.Threading;
+
 using ICSharpCode.AvalonEdit.Document;
 using ICSharpCode.AvalonEdit.Rendering;
+using ICSharpCode.AvalonEdit.Utils;
 
 namespace ICSharpCode.AvalonEdit.Editing
 {
@@ -24,7 +26,7 @@ namespace ICSharpCode.AvalonEdit.Editing
 	{
 		readonly TextArea textArea;
 		readonly TextView textView;
-		CaretLayer caretAdorner;
+		readonly CaretLayer caretAdorner;
 		bool visible;
 		
 		internal Caret(TextArea textArea)
@@ -346,5 +348,13 @@ namespace ICSharpCode.AvalonEdit.Editing
 				caretAdorner.Hide();
 			}
 		}
+		
+		/// <summary>
+		/// Gets/Sets the color of the caret.
+		/// </summary>
+		public Brush CaretBrush {
+			get { return caretAdorner.CaretBrush; }
+			set { caretAdorner.CaretBrush = value; }
+		}
 	}
 }
diff --git a/src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/Editing/CaretLayer.cs b/src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/Editing/CaretLayer.cs
index 383904a576..2b46b687bf 100644
--- a/src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/Editing/CaretLayer.cs
+++ b/src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/Editing/CaretLayer.cs
@@ -7,6 +7,7 @@
 
 using System;
 using System.Windows;
+using System.Windows.Controls;
 using System.Windows.Media;
 using System.Windows.Media.Animation;
 
@@ -65,11 +66,16 @@ namespace ICSharpCode.AvalonEdit.Editing
 			BeginAnimation(OpacityProperty, null);
 		}
 		
+		internal Brush CaretBrush;
+		
 		protected override void OnRender(DrawingContext drawingContext)
 		{
 			base.OnRender(drawingContext);
 			if (isVisible) {
-				drawingContext.DrawRectangle(Brushes.Black, null,
+				Brush caretBrush = this.CaretBrush;
+				if (caretBrush == null)
+					caretBrush = (Brush)textView.GetValue(TextBlock.ForegroundProperty);
+				drawingContext.DrawRectangle(caretBrush, null,
 				                             new Rect(caretRectangle.X - textView.HorizontalOffset,
 				                                      caretRectangle.Y - textView.VerticalOffset,
 				                                      caretRectangle.Width,
diff --git a/src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/Rendering/TextView.cs b/src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/Rendering/TextView.cs
index 703d12fa75..7f7399f2ca 100644
--- a/src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/Rendering/TextView.cs
+++ b/src/Libraries/AvalonEdit/ICSharpCode.AvalonEdit/Rendering/TextView.cs
@@ -304,6 +304,11 @@ namespace ICSharpCode.AvalonEdit.Rendering
 		{
 			return layers[index];
 		}
+		
+		/// <inheritdoc/>
+		protected override System.Collections.IEnumerator LogicalChildren {
+			get { return layers.GetEnumerator(); }
+		}
 		#endregion
 		
 		#region Redraw methods / VisualLine invalidation
@@ -1456,5 +1461,20 @@ namespace ICSharpCode.AvalonEdit.Rendering
 				throw ThrowUtil.NoDocumentAssigned();
 			return heightTree.GetLineByVisualPosition(visualTop);
 		}
+		
+		/// <inheritdoc/>
+		protected override void OnPropertyChanged(DependencyPropertyChangedEventArgs e)
+		{
+			base.OnPropertyChanged(e);
+			if (e.Property == Control.ForegroundProperty
+			    || e.Property == Control.FontFamilyProperty
+			    || e.Property == Control.FontSizeProperty
+			    || e.Property == Control.FontStretchProperty
+			    || e.Property == Control.FontStyleProperty
+			    || e.Property == Control.FontWeightProperty)
+			{
+				Redraw();
+			}
+		}
 	}
 }