//
// Returns a ustring with the text in the selected
// region.
//
ustring GetRegion()
{
long start, end;
GetEncodedRegionBounds(out start, out end);
int startRow = (int)(start >> 32);
var maxrow = ((int)(end >> 32));
int startCol = (int)(start & 0xffffffff);
var endCol = (int)(end & 0xffffffff);
var line = model.GetLine(startRow);
if (startRow == maxrow)
{
return(StringFromRunes(line.GetRange(startCol, endCol)));
}
ustring res = StringFromRunes(line.GetRange(startCol, line.Count - startCol));
for (int row = startRow + 1; row < maxrow; row++)
{
res = res + ustring.Make((Rune)10) + StringFromRunes(model.GetLine(row));
}
line = model.GetLine(maxrow);
res = res + ustring.Make((Rune)10) + StringFromRunes(line.GetRange(0, endCol));
return(res);
}
/// <summary>
/// Positions the cursor on the current row and column
/// </summary>
public override void PositionCursor()
{
if (selecting)
{
var minRow = Math.Min(Math.Max(Math.Min(selectionStartRow, currentRow) - topRow, 0), Frame.Height);
var maxRow = Math.Min(Math.Max(Math.Max(selectionStartRow, currentRow) - topRow, 0), Frame.Height);
SetNeedsDisplay(new Rect(0, minRow, Frame.Width, maxRow));
}
var line = model.GetLine(currentRow);
var retreat = 0;
if (line.Count > 0)
{
retreat = Math.Max((SpecialRune(line [Math.Max(CurrentColumn - leftColumn - 1, 0)])
? 1 : 0), 0);
}
Move(CurrentColumn - leftColumn - retreat, CurrentRow - topRow);
}