add support for FontWeight and FontStyle to ITextMarker

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

@@ -120,6 +120,13 @@ namespace ICSharpCode.AvalonEdit.AddIn
 						if (foregroundBrush != null) {
 							element.TextRunProperties.SetForegroundBrush(foregroundBrush);
 						}
+						Typeface tf = element.TextRunProperties.Typeface;
+						element.TextRunProperties.SetTypeface(new Typeface(
+							tf.FontFamily,
+							marker.FontStyle ?? tf.Style,
+							marker.FontWeight ?? tf.Weight,
+							tf.Stretch
+						));
 					}
 				);
 			}
@@ -280,6 +287,30 @@ namespace ICSharpCode.AvalonEdit.AddIn
 			}
 		}
 		
+		FontWeight? fontWeight;
+		
+		public FontWeight? FontWeight {
+			get { return fontWeight; }
+			set {
+				if (fontWeight != value) {
+					fontWeight = value;
+					Redraw();
+				}
+			}
+		}
+		
+		FontStyle? fontStyle;
+		
+		public FontStyle? FontStyle {
+			get { return fontStyle; }
+			set {
+				if (fontStyle != value) {
+					fontStyle = value;
+					Redraw();
+				}
+			}
+		}
+		
 		public object Tag { get; set; }
 		
 		TextMarkerTypes markerTypes;

src/Main/Base/Project/Src/Editor/ITextMarker.cs

@@ -3,6 +3,7 @@
 
 using System;
 using System.Collections.Generic;
+using System.Windows;
 using System.Windows.Media;
 
 namespace ICSharpCode.SharpDevelop.Editor
@@ -52,6 +53,16 @@ namespace ICSharpCode.SharpDevelop.Editor
 		/// </summary>
 		Color? ForegroundColor { get; set; }
 		
+		/// <summary>
+		/// Gets/Sets the font weight.
+		/// </summary>
+		FontWeight? FontWeight { get; set; }
+		
+		/// <summary>
+		/// Gets/Sets the font style.
+		/// </summary>
+		FontStyle? FontStyle { get; set; }
+		
 		/// <summary>
 		/// Gets/Sets the type of the marker. Use TextMarkerType.None for normal markers.
 		/// </summary>