private void EraseDisplay()
{
var type = GetParamOrDefault(0, 0);
var currentPosition = terminal.Cursor.Position;
IntegerPosition clearBegin, clearEnd;
switch (type)
{
case 0:
clearBegin = currentPosition;
clearEnd = terminal.Cursor.MaximalPosition;
break;
case 1:
clearBegin = new IntegerPosition();
clearEnd = currentPosition;
break;
case 2:
clearBegin = new IntegerPosition();
clearEnd = terminal.Cursor.MaximalPosition;
cursor.Position = new IntegerPosition(0, 0);
break;
default:
logger.Log("Unimplemented erase display mode.");
return;
}
terminal.EraseScreen(clearBegin, clearEnd, graphicRendition.Background);
}
public void EraseScreen(IntegerPosition from, IntegerPosition to, Color?background)
{
for (var rowScreenPosition = from.Y; rowScreenPosition <= to.Y; rowScreenPosition++)
{
var row = GetScreenRow(rowScreenPosition);
row.Erase(rowScreenPosition == from.Y ? from.X : 0, rowScreenPosition == to.Y ? to.X : row.CurrentMaximalCursorPosition, background);
}
canvas.Redraw();
}