/// <summary>
/// Gets the number of cells that this segment
/// occupies in the console.
/// </summary>
/// <param name="context">The render context.</param>
/// <returns>The number of cells that this segment occupies in the console.</returns>
public int CellLength(RenderContext context)
{
return(Text.CellLength(context));
}
/// <summary>
/// Splits an overflowing segment into several new segments.
/// </summary>
/// <param name="segment">The segment to split.</param>
/// <param name="overflow">The overflow strategy to use.</param>
/// <param name="context">The render context.</param>
/// <param name="width">The maximum width.</param>
/// <returns>A list of segments that has been split.</returns>
public static List <Segment> SplitOverflow(Segment segment, Overflow?overflow, RenderContext context, int width)
{
if (segment is null)
{
throw new ArgumentNullException(nameof(segment));
}
if (segment.CellLength(context) <= width)
{
return(new List <Segment>(1)
{
segment
});
}
// Default to folding
overflow ??= Overflow.Fold;
var result = new List <Segment>();
if (overflow == Overflow.Fold)
{
var totalLength = segment.Text.CellLength(context);
var lengthLeft = totalLength;
while (lengthLeft > 0)
{
var index = totalLength - lengthLeft;
// How many characters should we take?
var take = Math.Min(width, totalLength - index);
if (take == 0)
{
// This shouldn't really occur, but I don't like
// never ending loops if it does...
throw new InvalidOperationException("Text folding failed since 'take' was zero.");
}
result.Add(new Segment(segment.Text.Substring(index, take), segment.Style));
lengthLeft -= take;
}
}
else if (overflow == Overflow.Crop)
{
result.Add(new Segment(segment.Text.Substring(0, width), segment.Style));
}
else if (overflow == Overflow.Ellipsis)
{
result.Add(new Segment(segment.Text.Substring(0, width - 1) + "…", segment.Style));
}
return(result);
}
