Fixed SD2-1163: Text is shown above text editor's limits when scrolling text horizontally.

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/trunk@1910 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

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

@@ -263,6 +263,8 @@ namespace ICSharpCode.TextEditor
 					hRuler = new HRuler(textArea);
 					Controls.Add(hRuler);
 					ResizeTextArea();
+				} else {
+					hRuler.Invalidate();
 				}
 			} else {
 				if (hRuler != null) {

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

@@ -666,7 +666,8 @@ namespace ICSharpCode.TextEditor
 			return width;
 		}
 		
-		const TextFormatFlags textFormatFlags = TextFormatFlags.NoPadding | TextFormatFlags.NoPrefix;
+		const TextFormatFlags textFormatFlags =
+			TextFormatFlags.NoPadding | TextFormatFlags.NoPrefix | TextFormatFlags.PreserveGraphicsClipping;
 		#endregion
 		
 		#region Conversion Functions