Esempio n. 1
0
        public void TestBug5628()
        {
            var         data         = Create("class Foo {}");
            var         style        = SyntaxModeService.GetColorStyle(null, "TangoLight");
            ISyntaxMode mode         = null;
            string      generatedRtf = RtfWriter.GenerateRtf(data.Document, mode, style, data.Options);

            Assert.AreEqual(
                @"{\rtf1\ansi\deff0\adeflang1025{\fonttbl{\f0\fnil\fprq1\fcharset128 Mono;}}{\colortbl ;}\viewkind4\uc1\pard\f0\fs20\cf1class Foo \{\}}", generatedRtf);
        }
Esempio n. 2
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        public void TestSimpleCSharpRtf()
        {
            var         data         = Create("class Foo {}");
            var         style        = SyntaxModeService.GetColorStyle(null, "TangoLight");
            ISyntaxMode mode         = SyntaxModeService.GetSyntaxMode(data.Document, "text/x-csharp");
            string      generatedRtf = RtfWriter.GenerateRtf(data.Document, mode, style, data.Options);

            Assert.AreEqual(
                @"{\rtf1\ansi\deff0\adeflang1025{\fonttbl{\f0\fnil\fprq1\fcharset128 Mono;}}{\colortbl ;\red92\green53\blue102;\red0\green0\blue0;}\viewkind4\uc1\pard\f0\fs20\cf1\b\cf1 class\b0\cf2  Foo \{\}\par" + Environment.NewLine + "}", generatedRtf);
        }
Esempio n. 3
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        public void TestSimpleCSharpHtml()
        {
            var         data          = Create("class Foo {}");
            var         style         = SyntaxModeService.GetColorStyle("TangoLight");
            ISyntaxMode mode          = SyntaxModeService.GetSyntaxMode(data.Document, "text/x-csharp");
            string      generatedHtml = HtmlWriter.GenerateHtml(data.Document, mode, style, data.Options);

            Assert.AreEqual(
                @"<!DOCTYPE HTML PUBLIC ""-//W3C//DTD HTML 4.0 Transitional//EN""><HTML><BODY><FONT face = 'Mono'><SPAN style = 'color:#009695;' >class</SPAN><SPAN style = 'color:#444444;' >&nbsp;Foo&nbsp;</SPAN><SPAN style = 'color:#444444;' >{}</SPAN></FONT></BODY></HTML>", generatedHtml);
        }
 public SemanticHighlightingSyntaxMode(ExtensibleTextEditor editor, ISyntaxMode syntaxMode, SemanticHighlighting semanticHighlighting)
 {
     if (editor == null)
     {
         throw new ArgumentNullException("editor");
     }
     if (syntaxMode == null)
     {
         throw new ArgumentNullException("syntaxMode");
     }
     if (semanticHighlighting == null)
     {
         throw new ArgumentNullException("semanticHighlighting");
     }
     this.editor = editor;
     this.semanticHighlighting = semanticHighlighting;
     this.syntaxMode           = syntaxMode as SyntaxMode;
     semanticHighlighting.SemanticHighlightingUpdated += SemanticHighlighting_SemanticHighlightingUpdated;
 }
Esempio n. 5
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        List <Chunk> GetCachedChunks(ISyntaxMode mode, TextDocument doc, Mono.TextEditor.Highlighting.ColorScheme style, DocumentLine line, int offset, int length)
        {
            ChunkDescriptor descriptor;

            if (chunkDict.TryGetValue(line, out descriptor))
            {
                bool isInvalid;
                if (descriptor.Equals(line, offset, length, out isInvalid))
                {
                    return(descriptor.Chunk);
                }
                chunkDict.Remove(line);
            }
            ;

            var chunks = mode.GetChunks(style, line, offset, length).ToList();

            descriptor       = new ChunkDescriptor(line, offset, length, chunks);
            chunkDict [line] = descriptor;
            return(chunks);
        }
Esempio n. 6
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 public SyntaxModeChangeEventArgs(ISyntaxMode oldMode, ISyntaxMode newMode)
 {
     OldMode = oldMode;
     NewMode = newMode;
 }
		public LayoutWrapper CreateLinePartLayout (ISyntaxMode mode, DocumentLine line, int logicalRulerColumn, int offset, int length, int selectionStart, int selectionEnd)
		{
			bool containsPreedit = textEditor.ContainsPreedit (offset, length);
			LayoutDescriptor descriptor;
			if (!containsPreedit && layoutDict.TryGetValue (line, out descriptor)) {
				bool isInvalid;
				if (descriptor.Equals (line, offset, length, selectionStart, selectionEnd, out isInvalid) && descriptor.Layout != null) {
					return descriptor.Layout;
				}
				descriptor.Dispose ();
				layoutDict.Remove (line);
			}
			var wrapper = new LayoutWrapper (PangoUtil.CreateLayout (textEditor));
			wrapper.IsUncached = containsPreedit;
			if (logicalRulerColumn < 0)
				logicalRulerColumn = line.GetLogicalColumn (textEditor.GetTextEditorData (), textEditor.Options.RulerColumn);
			var atts = new FastPangoAttrList ();
			wrapper.Layout.Alignment = Pango.Alignment.Left;
			wrapper.Layout.FontDescription = textEditor.Options.Font;
			wrapper.Layout.Tabs = tabArray;
			if (textEditor.Options.WrapLines) {
				wrapper.Layout.Wrap = Pango.WrapMode.WordChar;
				wrapper.Layout.Width = (int)((textEditor.Allocation.Width - XOffset - TextStartPosition) * Pango.Scale.PangoScale);
			}
			StringBuilder textBuilder = new StringBuilder ();
			var chunks = GetCachedChunks (mode, Document, textEditor.ColorStyle, line, offset, length);
			wrapper.Chunks = chunks;
			foreach (var chunk in chunks) {
				try {
					textBuilder.Append (Document.GetTextAt (chunk));
				} catch {
					Console.WriteLine (chunk);
				}
			}
			int lineOffset = line.Offset;
			string lineText = textBuilder.ToString ();
			uint preeditLength = 0;
			
			if (containsPreedit) {
				if (textEditor.GetTextEditorData ().IsCaretInVirtualLocation) {
					lineText = textEditor.GetTextEditorData ().GetIndentationString (textEditor.Caret.Location) + textEditor.preeditString;
				} else {
					lineText = lineText.Insert (textEditor.preeditOffset - offset, textEditor.preeditString);
				}
				preeditLength = (uint)textEditor.preeditString.Length;
			}
			char[] lineChars = lineText.ToCharArray ();
			//int startOffset = offset, endOffset = offset + length;
			uint curIndex = 0, byteIndex = 0;
			uint curChunkIndex = 0, byteChunkIndex = 0;
			
			uint oldEndIndex = 0;
			foreach (Chunk chunk in chunks) {
				ChunkStyle chunkStyle = chunk != null ? textEditor.ColorStyle.GetChunkStyle (chunk) : null;
				foreach (TextLineMarker marker in line.Markers)
					chunkStyle = marker.GetStyle (chunkStyle);

				if (chunkStyle != null) {
					//startOffset = chunk.Offset;
					//endOffset = chunk.EndOffset;

					uint startIndex = (uint)(oldEndIndex);
					uint endIndex = (uint)(startIndex + chunk.Length);
					oldEndIndex = endIndex;
					var markers = Document.GetTextSegmentMarkersAt (line).Where (m => m.IsVisible).ToArray ();
					HandleSelection (lineOffset, logicalRulerColumn, selectionStart, selectionEnd, chunk.Offset, chunk.EndOffset, delegate(int start, int end) {
						if (containsPreedit) {
							if (textEditor.preeditOffset < start)
								start += (int)preeditLength;
							if (textEditor.preeditOffset < end)
								end += (int)preeditLength;
						}
						var si = TranslateToUTF8Index (lineChars, (uint)(startIndex + start - chunk.Offset), ref curIndex, ref byteIndex);
						var ei = TranslateToUTF8Index (lineChars, (uint)(startIndex + end - chunk.Offset), ref curIndex, ref byteIndex);
						var color = ColorStyle.GetForeground (chunkStyle);
						foreach (var marker in markers) {
							var chunkMarker = marker as IChunkMarker;
							if (chunkMarker == null)
								continue;
							chunkMarker.ChangeForeColor (textEditor, chunk, ref color);
						}
						atts.AddForegroundAttribute ((HslColor)color, si, ei);
						
						if (!chunkStyle.TransparentBackground && GetPixel (ColorStyle.PlainText.Background) != GetPixel (chunkStyle.Background)) {
							wrapper.AddBackground (chunkStyle.Background, (int)si, (int)ei);
						} else if (chunk.SpanStack != null && ColorStyle != null) {
							foreach (var span in chunk.SpanStack) {
								if (span == null || string.IsNullOrEmpty (span.Color))
									continue;
								var spanStyle = ColorStyle.GetChunkStyle (span.Color);
								if (spanStyle != null && !spanStyle.TransparentBackground && GetPixel (ColorStyle.PlainText.Background) != GetPixel (spanStyle.Background)) {
									wrapper.AddBackground (spanStyle.Background, (int)si, (int)ei);
									break;
								}
							}
						}
					}, delegate(int start, int end) {
						if (containsPreedit) {
							if (textEditor.preeditOffset < start)
								start += (int)preeditLength;
							if (textEditor.preeditOffset < end)
								end += (int)preeditLength;
						}
						var si = TranslateToUTF8Index (lineChars, (uint)(startIndex + start - chunk.Offset), ref curIndex, ref byteIndex);
						var ei = TranslateToUTF8Index (lineChars, (uint)(startIndex + end - chunk.Offset), ref curIndex, ref byteIndex);
						var color = !SelectionColor.TransparentForeground ? SelectionColor.Foreground : ColorStyle.GetForeground (chunkStyle);
						foreach (var marker in markers) {
							var chunkMarker = marker as IChunkMarker;
							if (chunkMarker == null)
								continue;
							chunkMarker.ChangeForeColor (textEditor, chunk, ref color);
						}
						atts.AddForegroundAttribute ((HslColor)color, si, ei);
						if (!wrapper.StartSet)
							wrapper.SelectionStartIndex = (int)si;
						wrapper.SelectionEndIndex = (int)ei;
					});

					var translatedStartIndex = TranslateToUTF8Index (lineChars, (uint)startIndex, ref curChunkIndex, ref byteChunkIndex);
					var translatedEndIndex = TranslateToUTF8Index (lineChars, (uint)endIndex, ref curChunkIndex, ref byteChunkIndex);

					if (chunkStyle.FontWeight != Xwt.Drawing.FontWeight.Normal)
						atts.AddWeightAttribute ((Pango.Weight)chunkStyle.FontWeight, translatedStartIndex, translatedEndIndex);

					if (chunkStyle.FontStyle != Xwt.Drawing.FontStyle.Normal)
						atts.AddStyleAttribute ((Pango.Style)chunkStyle.FontStyle, translatedStartIndex, translatedEndIndex);

					if (chunkStyle.Underline)
						atts.AddUnderlineAttribute (Pango.Underline.Single, translatedStartIndex, translatedEndIndex);
				}
			}
			if (containsPreedit) {
				var si = TranslateToUTF8Index (lineChars, (uint)(textEditor.preeditOffset - offset), ref curIndex, ref byteIndex);
				var ei = TranslateToUTF8Index (lineChars, (uint)(textEditor.preeditOffset - offset + preeditLength), ref curIndex, ref byteIndex);

				if (textEditor.GetTextEditorData ().IsCaretInVirtualLocation) {
					uint len = (uint)textEditor.GetTextEditorData ().GetIndentationString (textEditor.Caret.Location).Length;
					si += len;
					ei += len;
				}

				atts.AddForegroundAttribute ((HslColor)ColorStyle.PlainText.Foreground, si, ei);
				var hasBackground = wrapper.BackgroundColors.Any (bg => bg.FromIdx <= si && bg.ToIdx >= ei);
				if (hasBackground)
					atts.AddBackgroundAttribute ((HslColor)ColorStyle.PlainText.Background, si, ei);
				atts.InsertOffsetList (textEditor.preeditAttrs, si, ei);
			}
			wrapper.LineChars = lineChars;
			wrapper.Layout.SetText (lineText);
			wrapper.IndentSize = 0;
			for (int i = 0; i < lineChars.Length; i++) {
				char ch = lineChars [i];
				if (ch == ' ') {
					wrapper.IndentSize ++;
				} else if (ch == '\t') {
					wrapper.IndentSize = GetNextTabstop (textEditor.GetTextEditorData (), wrapper.IndentSize);
				} else {
					break;
				}
			}

			var nextLine = line.NextLine;
			wrapper.EolSpanStack = nextLine != null ? nextLine.StartSpan : null;
			atts.AssignTo (wrapper.Layout);
			atts.Dispose ();
			int w, h;
			wrapper.Layout.GetSize (out w, out h);
			wrapper.PangoWidth = w;

			selectionStart = System.Math.Max (line.Offset - 1, selectionStart);
			selectionEnd = System.Math.Min (line.EndOffsetIncludingDelimiter + 1, selectionEnd);
			descriptor = new LayoutDescriptor (line, offset, length, wrapper, selectionStart, selectionEnd);
			if (!containsPreedit)
				layoutDict [line] = descriptor;
			//textEditor.GetTextEditorData ().HeightTree.SetLineHeight (line.LineNumber, System.Math.Max (LineHeight, System.Math.Floor (h / Pango.Scale.PangoScale)));
			return wrapper;
		}
		public LayoutWrapper CreateLinePartLayout (ISyntaxMode mode, DocumentLine line, int offset, int length, int selectionStart, int selectionEnd)
		{
			return CreateLinePartLayout (mode, line, -1, offset, length, selectionStart, selectionEnd);
		}
		IEnumerable<Chunk> GetCachedChunks (ISyntaxMode mode, TextDocument doc, Mono.TextEditor.Highlighting.ColorScheme style, DocumentLine line, int offset, int length)
		{
			ChunkDescriptor descriptor;
			if (chunkDict.TryGetValue (line, out descriptor)) {
				bool isInvalid;
				if (descriptor.Equals (line, offset, length, out isInvalid))
					return descriptor.Chunk;
				chunkDict.Remove (line);
			}

			Chunk[] chunks = mode.GetChunks (style, line, offset, length).ToArray ();
			descriptor = new ChunkDescriptor (line, offset, length, chunks);
			chunkDict [line] = descriptor;
			return chunks;
		}
Esempio n. 10
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        public void Draw(Cairo.Context cr, Cairo.Rectangle area)
        {
            TextViewMargin textViewMargin = editor.TextViewMargin;
            ISyntaxMode    mode           = Document.SyntaxMode != null && editor.Options.EnableSyntaxHighlighting ? Document.SyntaxMode : new SyntaxMode(Document);

            TextViewMargin.LayoutWrapper lineLayout = null;
            double brightness = HslColor.Brightness(editor.ColorStyle.PlainText.Background);

            int colorCount = foldSegments.Count + 2;

            cr.SetSourceColor(GetColor(-1, brightness, colorCount));
            cr.Rectangle(area);
            cr.Fill();
            var       rectangles         = new Cairo.Rectangle[foldSegments.Count];
            const int xPadding           = 4;
            const int yPadding           = 2;
            const int rightMarginPadding = 16;

            for (int i = foldSegments.Count - 1; i >= 0; i--)
            {
                var segment = foldSegments [i];
                if (segment.IsInvalid)
                {
                    continue;
                }
                var segmentStartLine = segment.StartLine;
                var segmentEndLine   = segment.EndLine;

                int curWidth = 0;
                var endLine  = segmentEndLine.NextLine;
                var y        = editor.LineToY(segmentStartLine.LineNumber);
                if (y < editor.VAdjustment.Value)
                {
                    segmentStartLine = editor.GetLine(editor.YToLine(editor.VAdjustment.Value));
                    y = editor.LineToY(segmentStartLine.LineNumber);
                }

                for (var curLine = segmentStartLine; curLine != endLine && y < editor.VAdjustment.Value + editor.Allocation.Height; curLine = curLine.NextLine)
                {
                    var curLayout = textViewMargin.CreateLinePartLayout(mode, curLine, curLine.Offset, curLine.Length, -1, -1);
                    var width     = (int)(curLayout.Width);
                    curWidth = System.Math.Max(curWidth, width);
                    y       += editor.GetLineHeight(curLine);
                }

                double xPos = textViewMargin.XOffset;
                double rectangleWidth = 0, rectangleHeight = 0;

                lineLayout = textViewMargin.CreateLinePartLayout(mode, segmentStartLine, segmentStartLine.Offset, segmentStartLine.Length, -1, -1);
                var rectangleStart = lineLayout.Layout.IndexToPos(GetFirstNonWsIdx(lineLayout.Layout.Text));
                xPos = System.Math.Max(textViewMargin.XOffset, (textViewMargin.XOffset + textViewMargin.TextStartPosition + rectangleStart.X / Pango.Scale.PangoScale) - xPadding);

                lineLayout = textViewMargin.CreateLinePartLayout(mode, segmentEndLine, segmentEndLine.Offset, segmentEndLine.Length, -1, -1);

                var rectangleEnd = lineLayout.Layout.IndexToPos(GetFirstNonWsIdx(lineLayout.Layout.Text));
                xPos = System.Math.Min(xPos, System.Math.Max(textViewMargin.XOffset, (textViewMargin.XOffset + textViewMargin.TextStartPosition + rectangleEnd.X / Pango.Scale.PangoScale) - xPadding));

                rectangleWidth = textViewMargin.XOffset + textViewMargin.TextStartPosition + curWidth - xPos + xPadding * 2;

                if (i < foldSegments.Count - 1)
                {
                    rectangleWidth = System.Math.Max((rectangles [i + 1].X + rectangles[i + 1].Width + rightMarginPadding) - xPos, rectangleWidth);
                }

                y = editor.LineToY(segment.StartLine.LineNumber);
                var yEnd = editor.LineToY(segment.EndLine.LineNumber + 1) + (segment.EndLine.LineNumber == editor.LineCount ? editor.LineHeight : 0);
                if (yEnd == 0)
                {
                    yEnd = editor.VAdjustment.Upper;
                }
                rectangleHeight = yEnd - y;

                rectangles[i] = new Cairo.Rectangle(xPos, y - yPadding, rectangleWidth, rectangleHeight + yPadding * 2);
            }

            for (int i = 0; i < foldSegments.Count; i++)
            {
                Cairo.Rectangle clampedRect;
                var             rect = rectangles[i];

                if (i == foldSegments.Count - 1)
                {
/*					var radius = (int)(editor.Options.Zoom * 2);
 *                                      int w = 2 * radius;
 *                                      using (var shadow = new Blur (
 *                                              System.Math.Min ((int)rect.Width + w * 2, editor.Allocation.Width),
 *                                              System.Math.Min ((int)rect.Height + w * 2, editor.Allocation.Height),
 *                                              radius)) {
 *                                              using (var gctx = shadow.GetContext ()) {
 *                                                      gctx.Color = new Cairo.Color (0, 0, 0, 0);
 *                                                      gctx.Fill ();
 *
 *                                                      var a = 0;
 *                                                      var b = 0;
 *                                                      DrawRoundRectangle (gctx, true, true, w - a, w - b, editor.LineHeight / 4, rect.Width + a * 2, rect.Height + a * 2);
 *                                                      var bg = editor.ColorStyle.Default.CairoColor;
 *                                                      gctx.Color = new Cairo.Color (bg.R, bg.G, bg.B, 0.6);
 *                                                      gctx.Fill ();
 *                                              }
 *
 *                                              cr.Save ();
 *                                              cr.Translate (rect.X - w - editor.HAdjustment.Value, rect.Y - editor.VAdjustment.Value - w);
 *                                              shadow.Draw (cr);
 *                                              cr.Restore ();
 *                                      }*/

                    var curPadSize = 1;

                    var age   = (DateTime.Now - startTime).TotalMilliseconds;
                    var alpha = 0.1;
                    if (age < animationLength)
                    {
                        var animationState = age / (double)animationLength;
                        curPadSize = (int)(3 + System.Math.Sin(System.Math.PI * animationState) * 3);
                        alpha      = 0.1 + (1.0 - animationState) / 5;
                    }

                    var bg = editor.ColorStyle.PlainText.Foreground;
                    cr.SetSourceRGBA(bg.R, bg.G, bg.B, alpha);
                    clampedRect = ClampRect(rect.X - editor.HAdjustment.Value - curPadSize, rect.Y - editor.VAdjustment.Value - curPadSize, editor.LineHeight / 2, rect.Width + curPadSize * 2, rect.Height + curPadSize * 2, area);
                    DrawRoundRectangle(cr, true, true, clampedRect.X, clampedRect.Y, editor.LineHeight / 2, clampedRect.Width, clampedRect.Height);
                    cr.Fill();

                    if (age < animationLength)
                    {
                        var animationState = age / (double)animationLength;
                        curPadSize  = (int)(2 + System.Math.Sin(System.Math.PI * animationState) * 2);
                        clampedRect = ClampRect(rect.X - editor.HAdjustment.Value - curPadSize, rect.Y - editor.VAdjustment.Value - curPadSize, editor.LineHeight / 2, rect.Width + curPadSize * 2, rect.Height + curPadSize * 2, area);
                        DrawRoundRectangle(cr, true, true, clampedRect.X, clampedRect.Y, editor.LineHeight / 2, clampedRect.Width, clampedRect.Height);
                        cr.SetSourceColor(GetColor(i, brightness, colorCount));
                        cr.Fill();

                        continue;
                    }
                }

                clampedRect = ClampRect(rect.X - editor.HAdjustment.Value, rect.Y - editor.VAdjustment.Value, editor.LineHeight / 2, rect.Width, rect.Height, area);
                DrawRoundRectangle(cr, true, true, clampedRect.X, clampedRect.Y, editor.LineHeight / 2, clampedRect.Width, clampedRect.Height);

                cr.SetSourceColor(GetColor(i, brightness, colorCount));
                cr.Fill();
            }
        }
		public SyntaxModeChangeEventArgs (ISyntaxMode oldMode, ISyntaxMode newMode)
		{
			OldMode = oldMode;
			NewMode = newMode;
		}
Esempio n. 12
0
		public LayoutWrapper CreateLinePartLayout (ISyntaxMode mode, LineSegment line, int logicalRulerColumn, int offset, int length, int selectionStart, int selectionEnd)
		{
			bool containsPreedit = textEditor.ContainsPreedit (offset, length);
			LayoutDescriptor descriptor;
			if (!containsPreedit && layoutDict.TryGetValue (line, out descriptor)) {
				bool isInvalid;
				if (descriptor.Equals (line, offset, length, selectionStart, selectionEnd, out isInvalid) && descriptor.Layout != null) {
					return descriptor.Layout;
				}
				descriptor.Dispose ();
				layoutDict.Remove (line);
			}
			var wrapper = new LayoutWrapper (PangoUtil.CreateLayout (textEditor));
			wrapper.IsUncached = containsPreedit;

			if (logicalRulerColumn < 0)
				logicalRulerColumn = line.GetLogicalColumn (textEditor.GetTextEditorData (), textEditor.Options.RulerColumn);
			var atts = new FastPangoAttrList ();
			wrapper.Layout.Alignment = Pango.Alignment.Left;
			wrapper.Layout.FontDescription = textEditor.Options.Font;
			wrapper.Layout.Tabs = tabArray;
			StringBuilder textBuilder = new StringBuilder ();
			var chunks = GetCachedChunks (mode, Document, textEditor.ColorStyle, line, offset, length);
			foreach (var chunk in chunks) {
				try {
					textBuilder.Append (Document.GetTextAt (chunk));
				} catch {
					Console.WriteLine (chunk);
				}
			}
			var spanStack = line.StartSpan;
			int lineOffset = line.Offset;
			string lineText = textBuilder.ToString ();
			uint preeditLength = 0;
			
			if (containsPreedit) {
				lineText = lineText.Insert (textEditor.preeditOffset - offset, textEditor.preeditString);
				preeditLength = (uint)textEditor.preeditString.Length;
			}
			char[] lineChars = lineText.ToCharArray ();
			//int startOffset = offset, endOffset = offset + length;
			uint curIndex = 0, byteIndex = 0;
			uint curChunkIndex = 0, byteChunkIndex = 0;
			
			uint oldEndIndex = 0;
			foreach (Chunk chunk in chunks) {
				ChunkStyle chunkStyle = chunk != null ? textEditor.ColorStyle.GetChunkStyle (chunk) : null;
				spanStack = chunk.SpanStack ?? spanStack;
				foreach (TextMarker marker in line.Markers)
					chunkStyle = marker.GetStyle (chunkStyle);

				if (chunkStyle != null) {
					//startOffset = chunk.Offset;
					//endOffset = chunk.EndOffset;

					uint startIndex = (uint)(oldEndIndex);
					uint endIndex = (uint)(startIndex + chunk.Length);
					oldEndIndex = endIndex;

					HandleSelection (lineOffset, logicalRulerColumn, selectionStart, selectionEnd, chunk.Offset, chunk.EndOffset, delegate(int start, int end) {
						if (containsPreedit) {
							if (textEditor.preeditOffset < start)
								start += (int)preeditLength;
							if (textEditor.preeditOffset < end)
								end += (int)preeditLength;
						}
						var si = TranslateToUTF8Index (lineChars, (uint)(startIndex + start - chunk.Offset), ref curIndex, ref byteIndex);
						var ei = TranslateToUTF8Index (lineChars, (uint)(startIndex + end - chunk.Offset), ref curIndex, ref byteIndex);
						atts.AddForegroundAttribute (chunkStyle.Color, si, ei);
						
						if (!chunkStyle.TransparentBackround && GetPixel (ColorStyle.Default.BackgroundColor) != GetPixel (chunkStyle.BackgroundColor)) {
							wrapper.AddBackground (chunkStyle.CairoBackgroundColor, (int)si, (int)ei);
						} else if (chunk.SpanStack != null && ColorStyle != null) {
							foreach (var span in chunk.SpanStack) {
								if (span == null)
									continue;
								var spanStyle = ColorStyle.GetChunkStyle (span.Color);
								if (!spanStyle.TransparentBackround && GetPixel (ColorStyle.Default.BackgroundColor) != GetPixel (spanStyle.BackgroundColor)) {
									wrapper.AddBackground (spanStyle.CairoBackgroundColor, (int)si, (int)ei);
									break;
								}
							}
						}
					}, delegate(int start, int end) {
						if (containsPreedit) {
							if (textEditor.preeditOffset < start)
								start += (int)preeditLength;
							if (textEditor.preeditOffset < end)
								end += (int)preeditLength;
						}
						var si = TranslateToUTF8Index (lineChars, (uint)(startIndex + start - chunk.Offset), ref curIndex, ref byteIndex);
						var ei = TranslateToUTF8Index (lineChars, (uint)(startIndex + end - chunk.Offset), ref curIndex, ref byteIndex);
						atts.AddForegroundAttribute (SelectionColor.Color, si, ei);
						if (!wrapper.StartSet)
							wrapper.SelectionStartIndex = (int)si;
						wrapper.SelectionEndIndex = (int)ei;
					});

					var translatedStartIndex = TranslateToUTF8Index (lineChars, (uint)startIndex, ref curChunkIndex, ref byteChunkIndex);
					var translatedEndIndex = TranslateToUTF8Index (lineChars, (uint)endIndex, ref curChunkIndex, ref byteChunkIndex);

					if (chunkStyle.Bold)
						atts.AddWeightAttribute (Pango.Weight.Bold, translatedStartIndex, translatedEndIndex);

					if (chunkStyle.Italic)
						atts.AddStyleAttribute (Pango.Style.Italic, translatedStartIndex, translatedEndIndex);

					if (chunkStyle.Underline)
						atts.AddUnderlineAttribute (Pango.Underline.Single, translatedStartIndex, translatedEndIndex);
				}
			}
			if (containsPreedit) {
				var si = TranslateToUTF8Index (lineChars, (uint)(textEditor.preeditOffset - offset), ref curIndex, ref byteIndex);
				var ei = TranslateToUTF8Index (lineChars, (uint)(textEditor.preeditOffset - offset + preeditLength), ref curIndex, ref byteIndex);
				atts.Splice (textEditor.preeditAttrs, (int)si, (int)(ei - si));
			}
			wrapper.LineChars = lineChars;
			wrapper.Layout.SetText (lineText);
			wrapper.EolSpanStack = spanStack;
			atts.AssignTo (wrapper.Layout);
			atts.Dispose ();
			int w, h;
			wrapper.Layout.GetSize (out w, out h);
			wrapper.PangoWidth = w;

			selectionStart = System.Math.Max (line.Offset - 1, selectionStart);
			selectionEnd = System.Math.Min (line.EndOffsetIncludingDelimiter + 1, selectionEnd);
			descriptor = new LayoutDescriptor (line, offset, length, wrapper, selectionStart, selectionEnd);
			if (!containsPreedit)
				layoutDict[line] = descriptor;
			return wrapper;
		}
        public void Draw(Cairo.Context cr, Cairo.Rectangle area, DocumentLine lineSegment, double x, double y, double lineHeight)
        {
            int foundSegment = -1;

            if (lineSegment != null)
            {
                for (int i = 0; i < foldSegments.Count; i++)
                {
                    FoldSegment segment = foldSegments [i];
                    if (segment.StartLine.Offset <= lineSegment.Offset && lineSegment.EndOffsetIncludingDelimiter <= segment.EndLine.EndOffsetIncludingDelimiter)
                    {
                        foundSegment = i;
                        roles [i]    = Roles.Between;
                        if (segment.StartLine.Offset == lineSegment.Offset)
                        {
                            roles [i] |= Roles.Start;
                            if (segment.IsFolded)
                            {
                                roles [i] |= Roles.End;
                            }
                        }
                        if (segment.EndLine.Offset == lineSegment.Offset)
                        {
                            roles [i] |= Roles.End;
                        }
                    }
                }
            }
            TextViewMargin textViewMargin = editor.TextViewMargin;
            ISyntaxMode    mode           = Document.SyntaxMode != null && editor.Options.EnableSyntaxHighlighting ? Document.SyntaxMode : new SyntaxMode(Document);

            //	Gdk.Rectangle lineArea = new Gdk.Rectangle (textViewMargin.XOffset, y, editor.Allocation.Width - textViewMargin.XOffset, editor.LineHeight);
            //	Gdk.GC gc = new Gdk.GC (drawable);
            TextViewMargin.LayoutWrapper lineLayout = null;
            double brightness = HslColor.Brightness(editor.ColorStyle.Default.BackgroundColor);

            int colorCount = foldSegments.Count + 2;

            for (int segment = -1; segment <= foundSegment; segment++)
            {
                HslColor hslColor      = new HslColor(editor.ColorStyle.Default.BackgroundColor);
                int      colorPosition = segment + 1;
                if (segment == foldSegments.Count - 1)
                {
                    colorPosition += 2;
                }
                if (brightness < 0.5)
                {
                    hslColor.L = hslColor.L * 0.81 + hslColor.L * 0.25 * (colorCount - colorPosition) / colorCount;
                }
                else
                {
                    hslColor.L = hslColor.L * 0.86 + hslColor.L * 0.1 * colorPosition / colorCount;
                }

                Roles  role           = Roles.Between;
                double xPos           = textViewMargin.XOffset;
                double rectangleWidth = editor.Allocation.Width - xPos;
                if (segment >= 0)
                {
                    DocumentLine segmentStartLine = foldSegments [segment].StartLine;
                    lineLayout = textViewMargin.CreateLinePartLayout(mode, segmentStartLine, segmentStartLine.Offset, segmentStartLine.Length, -1, -1);
                    Pango.Rectangle rectangle = lineLayout.Layout.IndexToPos(GetFirstNonWsIdx(lineLayout.Layout.Text));
                    xPos = System.Math.Max(textViewMargin.XOffset, (textViewMargin.XOffset + rectangle.X / Pango.Scale.PangoScale - editor.HAdjustment.Value));

                    DocumentLine segmentEndLine = foldSegments [segment].EndLine;
                    lineLayout = textViewMargin.CreateLinePartLayout(mode, segmentEndLine, segmentEndLine.Offset, segmentEndLine.Length, -1, -1);
                    rectangle  = lineLayout.Layout.IndexToPos(GetFirstNonWsIdx(lineLayout.Layout.Text));
                    xPos       = System.Math.Min(xPos, System.Math.Max(textViewMargin.XOffset, (textViewMargin.XOffset + rectangle.X / Pango.Scale.PangoScale - editor.HAdjustment.Value)));

                    int width = editor.Allocation.Width;
                    if (editor.HAdjustment.Upper > width)
                    {
                        width = (int)(textViewMargin.XOffset + editor.HAdjustment.Upper - editor.HAdjustment.Value);
                    }
                    rectangleWidth = (int)(width - xPos - 6 * (segment + 1));
                    role           = roles [segment];
                }
                DrawRoundRectangle(cr, (role & Roles.Start) == Roles.Start, (role & Roles.End) == Roles.End, xPos, y, editor.LineHeight / 2, rectangleWidth, lineHeight);
                cr.Color = ColorScheme.ToCairoColor(hslColor);
                cr.Fill();

                /*		if (segment == foldSegments.Count - 1) {
                 *  cr.Color = new Cairo.Color (0.5, 0.5, 0.5, 1);
                 *  cr.Stroke ();
                 * }*/
                if (lineLayout != null && lineLayout.IsUncached)
                {
                    lineLayout.Dispose();
                    lineLayout = null;
                }
            }
            //		gc.Dispose ();
        }