// ** private
private void ShowZoomedCell(int row, int col)
{
// ignore empty area
if (row < _owner.Rows.Fixed || col < _owner.Cols.Fixed)
{
Visible = false;
return;
}
// get cell rectangle
Rectangle rc = _owner.GetCellRect(row, col);
// create bitmap
CellStyle style = _owner.GetCellStyleDisplay(row, col);
Image = new Bitmap(rc.Width, rc.Height);
using (Graphics g = Graphics.FromImage(Image))
{
Point pt = rc.Location;
rc.Location = Point.Empty;
style.Render(g, rc, _owner.GetDataDisplay(row, col));
rc.Location = pt;
}
// apply zoom factor
rc.Inflate((int)(rc.Width * (_zoom - 1)), (int)(rc.Height * (_zoom - 1)));
Bounds = rc;
Visible = true;
Invalidate();
}