Forum-8545: Fixed color of +/- sign in folding marker.

By default, use system colors for folding marker.
Fixed Mode.xsd so that .xshd files generated by the highlighting editor are valid again.

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/branches/3.0@3658 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

src/Libraries/ICSharpCode.TextEditor/Project/Resources/Boo.xshd

@@ -3,17 +3,6 @@
 <SyntaxDefinition name="Boo" extensions=".boo">
 
 	<Environment>
-		<Default bold="false" italic="false" color="SystemColors.WindowText" bgcolor="SystemColors.Window" />
-		<Selection bold="false" italic="false" color="SystemColors.HighlightText" bgcolor="SystemColors.Highlight" />
-		<VRuler bold="false" italic="false" color="SystemColors.ControlLight" />
-		<InvalidLines bold="false" italic="false" color="Red" />
-		<CaretMarker bold="false" italic="false" color="Yellow" />
-		<LineNumbers bold="false" italic="false" color="SystemColors.ControlDark" bgcolor="SystemColors.Window" />
-		<FoldLine bold="false" italic="false" color="Gray" bgcolor="Black" />
-		<FoldMarker bold="false" italic="false" color="Gray" bgcolor="White" />
-		<EOLMarkers bold="false" italic="false" color="#E0E0E5" />
-		<SpaceMarkers bold="false" italic="false" color="#E0E0E5" />
-		<TabMarkers bold="false" italic="false" color="#E0E0E5" />
 		<Custom name="LocalVariableCreation" bold="false" italic="false" color="#04ABAB" />
 	</Environment>
 

src/Libraries/ICSharpCode.TextEditor/Project/Resources/Mode.xsd

@@ -43,6 +43,7 @@
 			<xsd:element name="VRuler" type="EnvironmentEntry" minOccurs="0" maxOccurs="1"/>
 			<xsd:element name="InvalidLines" type="EnvironmentEntry" minOccurs="0" maxOccurs="1"/>
 			<xsd:element name="CaretMarker" type="EnvironmentEntry" minOccurs="0" maxOccurs="1"/>
+			<xsd:element name="CaretLine" type="EnvironmentEntry" minOccurs="0" maxOccurs="1"/>
 			
 			<xsd:element name="LineNumbers" type="EnvironmentEntry" minOccurs="0" maxOccurs="1"/>
 			

src/Libraries/ICSharpCode.TextEditor/Project/Src/Document/HighlightingStrategy/DefaultHighlightingStrategy.cs

@@ -74,9 +74,9 @@ namespace ICSharpCode.TextEditor.Document
 			environmentColors["CaretLine"] = new HighlightBackground("ControlLight", "Window", false, false);
 			environmentColors["LineNumbers"] = new HighlightBackground("ControlDark", "Window", false, false);
 			
-			environmentColors["FoldLine"]         = new HighlightColor(Color.FromArgb(0x80, 0x80, 0x80), Color.Black, false, false);
-			environmentColors["FoldMarker"]       = new HighlightColor(Color.FromArgb(0x80, 0x80, 0x80), Color.White, false, false);
-			environmentColors["SelectedFoldLine"] = new HighlightColor(Color.Black, false, false);
+			environmentColors["FoldLine"]         = new HighlightColor("ControlDark", false, false);
+			environmentColors["FoldMarker"]       = new HighlightColor("WindowText", "Window", false, false);
+			environmentColors["SelectedFoldLine"] = new HighlightColor("WindowText", false, false);
 			environmentColors["EOLMarkers"]       = new HighlightColor("ControlLight", "Window", false, false);
 			environmentColors["SpaceMarkers"]     = new HighlightColor("ControlLight", "Window", false, false);
 			environmentColors["TabMarkers"]       = new HighlightColor("ControlLight", "Window", false, false);

src/Libraries/ICSharpCode.TextEditor/Project/Src/Document/HighlightingStrategy/HighlightColor.cs

@@ -251,6 +251,20 @@ namespace ICSharpCode.TextEditor.Document
 			this.italic       = italic;
 		}
 		
+		/// <summary>
+		/// Creates a new instance of <see cref="HighlightColor"/>
+		/// </summary>
+		public HighlightColor(string systemColor, bool bold, bool italic)
+		{
+			hasForeground = true;
+			
+			this.systemColor  = true;
+			systemColorName   = systemColor;
+			
+			this.bold         = bold;
+			this.italic       = italic;
+		}
+		
 		static Color ParseColor(string c)
 		{
 			int a = 255;

src/Libraries/ICSharpCode.TextEditor/Project/Src/Gui/FoldMargin.cs

@@ -44,7 +44,6 @@ namespace ICSharpCode.TextEditor
 				return;
 			}
 			HighlightColor lineNumberPainterColor = textArea.Document.HighlightingStrategy.GetColorFor("LineNumbers");
-			HighlightColor foldLineColor          = textArea.Document.HighlightingStrategy.GetColorFor("FoldLine");
 			
 			
 			for (int y = 0; y < (DrawingPosition.Height + textArea.TextView.VisibleLineDrawingRemainder) / textArea.TextView.FontHeight + 1; ++y) {
@@ -251,19 +250,21 @@ namespace ICSharpCode.TextEditor
 			
 			Rectangle intRect = new Rectangle((int)rectangle.X, (int)rectangle.Y, (int)rectangle.Width, (int)rectangle.Height);
 			g.FillRectangle(BrushRegistry.GetBrush(foldMarkerColor.BackgroundColor), intRect);
-			g.DrawRectangle(BrushRegistry.GetPen(isSelected ? selectedFoldLine.Color : foldMarkerColor.Color), intRect);
+			g.DrawRectangle(BrushRegistry.GetPen(isSelected ? selectedFoldLine.Color : foldLineColor.Color), intRect);
 			
 			int space  = (int)Math.Round(((double)rectangle.Height) / 8d) + 1;
 			int mid    = intRect.Height / 2 + intRect.Height % 2;
 			
-			g.DrawLine(BrushRegistry.GetPen(foldLineColor.BackgroundColor),
+			// draw minus
+			g.DrawLine(BrushRegistry.GetPen(foldMarkerColor.Color),
 			           rectangle.X + space,
 			           rectangle.Y + mid,
 			           rectangle.X + rectangle.Width - space,
 			           rectangle.Y + mid);
 			
+			// draw plus
 			if (!isOpened) {
-				g.DrawLine(BrushRegistry.GetPen(foldLineColor.BackgroundColor),
+				g.DrawLine(BrushRegistry.GetPen(foldMarkerColor.Color),
 				           rectangle.X + mid,
 				           rectangle.Y + space,
 				           rectangle.X + mid,