/// <inheritdoc/> public override VisualLineElement ConstructElement(int offset) { if (foldingManager == null) { return(null); } int foldedUntil = -1; FoldingSection foldingSection = null; foreach (FoldingSection fs in foldingManager.GetFoldingsAt(offset)) { if (fs.IsFolded) { if (fs.EndOffset > foldedUntil) { foldedUntil = fs.EndOffset; foldingSection = fs; } } } if (foldedUntil > offset && foldingSection != null) { // Handle overlapping foldings: if there's another folded folding // (starting within the foldingSection) that continues after the end of the folded section, // then we'll extend our fold element to cover that overlapping folding. bool foundOverlappingFolding; do { foundOverlappingFolding = false; foreach (FoldingSection fs in FoldingManager.GetFoldingsContaining(foldedUntil)) { if (fs.IsFolded && fs.EndOffset > foldedUntil) { foldedUntil = fs.EndOffset; foundOverlappingFolding = true; } } } while (foundOverlappingFolding); string title = foldingSection.Title; if (string.IsNullOrEmpty(title)) { title = "..."; } var p = new VisualLineElementTextRunProperties(CurrentContext.GlobalTextRunProperties); p.SetForegroundBrush(textBrush); var textFormatter = TextFormatterFactory.Create(CurrentContext.TextView); var text = FormattedTextElement.PrepareText(textFormatter, title, p); return(new FoldingLineElement(foldingSection, text, foldedUntil - offset) { textBrush = textBrush }); } else { return(null); } }