1 files changed, 102 insertions, 0 deletions
diff --git a/main/src/addins/MonoDevelop.SourceEditor2/MonoDevelop.SourceEditor/TextMarker/UsageSegmentMarker.cs b/main/src/addins/MonoDevelop.SourceEditor2/MonoDevelop.SourceEditor/TextMarker/UsageSegmentMarker.cs
new file mode 100644
index 0000000000..bdd4c7c59d
--- /dev/null
+++ b/main/src/addins/MonoDevelop.SourceEditor2/MonoDevelop.SourceEditor/TextMarker/UsageSegmentMarker.cs
@@ -0,0 +1,102 @@
+using System;
+using Mono.TextEditor;
+using MonoDevelop.Ide.Editor;
+using MonoDevelop.Ide.FindInFiles;
+using Cairo;
+using MonoDevelop.Components;
+using MonoDevelop.Ide.Editor.Extension;
+
+namespace MonoDevelop.SourceEditor
+{
+	class UsageSegmentMarker : TextSegmentMarker, ITextSegmentMarker
+	{
+		readonly Usage usage;
+
+		public Usage Usage {
+			get {
+				return usage;
+			}
+		}
+
+		public UsageSegmentMarker (Usage usage) : base (usage.Offset, usage.Length)
+		{
+			this.usage = usage;
+		}
+
+		event EventHandler<TextMarkerMouseEventArgs> ITextSegmentMarker.MousePressed {
+			add {
+			}
+			remove {
+			}
+		}
+
+		event EventHandler<TextMarkerMouseEventArgs> ITextSegmentMarker.MouseHover {
+			add {
+			}
+			remove {
+			}
+		}
+
+		object ITextSegmentMarker.Tag {
+			get;
+			set;
+		}
+
+		public override void DrawBackground (Mono.TextEditor.MonoTextEditor editor, Context cr, LineMetrics metrics, int startOffset, int endOffset)
+		{
+			int markerStart = usage.Offset;
+			int markerEnd = usage.EndOffset;
+
+			if (markerEnd < startOffset || markerStart > endOffset) 
+				return; 
+
+			double @from;
+			double to;
+			var startXPos = metrics.TextRenderStartPosition;
+			var endXPos = metrics.TextRenderEndPosition;
+			var y = metrics.LineYRenderStartPosition;
+			if (markerStart < startOffset && endOffset < markerEnd) {
+				@from = startXPos;
+				to = endXPos;
+			} else {
+				int start = startOffset < markerStart ? markerStart : startOffset;
+				int end = endOffset < markerEnd ? endOffset : markerEnd;
+
+				uint curIndex = 0, byteIndex = 0;
+				TextViewMargin.TranslateToUTF8Index (metrics.Layout.LineChars, (uint)(start - startOffset), ref curIndex, ref byteIndex);
+
+				int x_pos = metrics.Layout.Layout.IndexToPos ((int)byteIndex).X;
+
+				@from = startXPos + (int)(x_pos / Pango.Scale.PangoScale);
+
+				TextViewMargin.TranslateToUTF8Index (metrics.Layout.LineChars, (uint)(end - startOffset), ref curIndex, ref byteIndex);
+				x_pos = metrics.Layout.Layout.IndexToPos ((int)byteIndex).X;
+
+				to = startXPos + (int)(x_pos / Pango.Scale.PangoScale);
+			}
+
+			@from = Math.Max (@from, editor.TextViewMargin.XOffset);
+			to = Math.Max (to, editor.TextViewMargin.XOffset);
+			if (@from < to) {
+				Mono.TextEditor.Highlighting.AmbientColor colorStyle;
+				if ((usage.UsageType & ReferenceUsageType.Write) == ReferenceUsageType.Write ||
+					(usage.UsageType & ReferenceUsageType.Declariton) == ReferenceUsageType.Declariton) {
+					colorStyle = editor.ColorStyle.ChangingUsagesRectangle;
+				} else {
+					colorStyle = editor.ColorStyle.UsagesRectangle;
+				}
+
+				using (var lg = new LinearGradient (@from + 1, y + 1, to , y + editor.LineHeight)) {
+					lg.AddColorStop (0, colorStyle.Color);
+					lg.AddColorStop (1, colorStyle.SecondColor);
+					cr.SetSource (lg);
+					cr.RoundedRectangle (@from + 0.5, y + 1.5, to - @from - 1, editor.LineHeight - 2, editor.LineHeight / 4);
+					cr.FillPreserve ();
+				}
+
+				cr.SetSourceColor (colorStyle.BorderColor);
+				cr.Stroke ();
+			}
+		}
+	}
+}
+\ No newline at end of file