/// <summary>
/// Appends a single line to the scrollback buffer.
/// </summary>
/// <param name="screenLine">The line to append.</param>
public void Append(ScreenLine screenLine)
{
List <ScreenLine> currentPartition = this.partitions[0];
currentPartition.Add(screenLine);
if (currentPartition.Count >= currentPartition.Capacity)
{
if ((this.partitions.Count - 1) * PartitionSize >= this.maximumCount)
{
var oldPartition = this.partitions[this.partitions.Count - 1];
this.partitions.RemoveAt(this.partitions.Count - 1);
foreach (var line in oldPartition)
{
ScreenCell.RecycleCells(line);
}
}
this.partitions.Insert(0, new List <ScreenLine>(PartitionSize));
}
}
/// <summary>
/// Resizes the specified screen buffer to the specified size.
/// </summary>
/// <param name="rows">The new amount of rows.</param>
/// <param name="columns">The new amount of columns.</param>
private void Resize(List <ScreenLine> buffer, int rows, int columns)
{
while (buffer.Count > rows)
{
if (this.CursorRow < buffer.Count - 1)
{
buffer.RemoveAt(buffer.Count - 1);
}
else
{
this.CursorRow--;
buffer.RemoveAt(0);
}
}
while (buffer.Count < rows)
{
buffer.Add(new ScreenLine(columns));
}
foreach (var line in buffer)
{
if (line.Count > columns)
{
var cells = line.GetRange(line.Count - (line.Count - columns), line.Count - columns);
line.RemoveRange(line.Count - (line.Count - columns), line.Count - columns);
ScreenCell.RecycleCells(cells);
}
else if (line.Count < columns)
{
line.AddRange(ScreenCell.GetFreshCells(columns - line.Count));
}
}
this.CursorRow = Math.Min(this.CursorRow, rows - 1);
this.CursorColumn = Math.Min(this.CursorColumn, columns - 1);
this.changed = true;
}