/// <inheritdoc/>
public override int GetFirstInterestedOffset(int startOffset)
{
if (foldingManager != null)
{
foreach (FoldingSection fs in foldingManager.GetFoldingsContaining(startOffset))
{
// Test whether we're currently within a folded folding (that didn't just end).
// If so, create the fold marker immediately.
// This is necessary if the actual beginning of the fold marker got skipped due to another VisualElementGenerator.
if (fs.IsFolded && fs.EndOffset > startOffset)
{
//return startOffset;
}
}
return(foldingManager.GetNextFoldedFoldingStart(startOffset));
}
else
{
return(-1);
}
}
/// <summary>
/// Calculates fold lines for all folding sections that start in front of the current view
/// and run into the current view.
/// </summary>
void CalculateFoldLinesForFoldingsActiveAtStart(List <TextLine> allTextLines, Pen[] colors, Pen[] endMarker)
{
int viewStartOffset = TextView.VisualLines[0].FirstDocumentLine.Offset;
int viewEndOffset = TextView.VisualLines.Last().LastDocumentLine.EndOffset;
var foldings = FoldingManager.GetFoldingsContaining(viewStartOffset);
int maxEndOffset = 0;
foreach (FoldingSection fs in foldings)
{
int end = fs.EndOffset;
if (end <= viewEndOffset && !fs.IsFolded)
{
int textLineNr = GetTextLineIndexFromOffset(allTextLines, end);
if (textLineNr >= 0)
{
endMarker[textLineNr] = foldingControlPen;
}
}
if (end > maxEndOffset && fs.StartOffset < viewStartOffset)
{
maxEndOffset = end;
}
}
if (maxEndOffset > 0)
{
if (maxEndOffset > viewEndOffset)
{
for (int i = 0; i < colors.Length; i++)
{
colors[i] = foldingControlPen;
}
}
else
{
int maxTextLine = GetTextLineIndexFromOffset(allTextLines, maxEndOffset);
for (int i = 0; i <= maxTextLine; i++)
{
colors[i] = foldingControlPen;
}
}
}
}