override public void Draw(DrawContext drawContext)
{
base.Draw(drawContext);
iText.Kernel.Geom.Rectangle cuadro = GetOccupiedAreaBBox();
cuadro.MoveUp(margenExterior).MoveRight(margenExterior);
cuadro.SetHeight(cuadro.GetHeight() - (margenExterior * 2));
cuadro.SetWidth(cuadro.GetWidth() - (margenExterior * 2));
PdfTextFormField field = PdfFormField.CreateText(drawContext.GetDocument(), cuadro, fieldName, valor);
field.SetJustification(justificacion);
field.SetVisibility(PdfFormField.VISIBLE);
field.SetFontSize(fontSize);
PdfAcroForm form = PdfAcroForm.GetAcroForm(drawContext.GetDocument(), true);
form.AddField(field);
}