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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def draw_name(self, context, transparency, only_calculate_size=False):
 """Draws the name of the port Offers the option to only calculate the size of the name. :param context: The context to draw on :param transparency: The transparency of the text :param only_calculate_size: Whether to only calculate the size :return: Size of the name :rtype: float, float """

        c = context
        cairo_context = c
        if isinstance(c, CairoBoundingBoxContext):
            cairo_context = c._cairo
        # c.set_antialias(Antialias.GOOD)

        side_length = self.port_side_size

        layout = PangoCairo.create_layout(cairo_context)
        font_name = constants.INTERFACE_FONT
        font_size = gap_draw_helper.FONT_SIZE
        font = FontDescription(font_name + " " + str(font_size))
        layout.set_font_description(font)
        layout.set_text(self.name, -1)

        ink_extents, logical_extents = layout.get_extents()
        extents = [extent / float(SCALE) for extent in [logical_extents.x, logical_extents.y,
                                                        logical_extents.width, logical_extents.height]]
        real_name_size = extents[2], extents[3]
        desired_height = side_length * 0.75
        scale_factor = real_name_size[1] / desired_height

        # Determine the size of the text, increase the width to have more margin left and right of the text
        margin = side_length / 4.
        name_size = real_name_size[0] / scale_factor, desired_height
        name_size_with_margin = name_size[0] + margin * 2, name_size[1] + margin * 2

        # Only the size is required, stop here
        if only_calculate_size:
            return name_size_with_margin

        # Current position is the center of the port rectangle
        c.save()
        if self.side is SnappedSide.RIGHT or self.side is SnappedSide.LEFT:
            c.rotate(deg2rad(-90))
        c.rel_move_to(-name_size[0] / 2, -name_size[1] / 2)
        c.scale(1. / scale_factor, 1. / scale_factor)
        c.rel_move_to(-extents[0], -extents[1])

        c.set_source_rgba(*gap_draw_helper.get_col_rgba(self.text_color, transparency))
        PangoCairo.update_layout(cairo_context, layout)
        PangoCairo.show_layout(cairo_context, layout)
        c.restore()

        return name_size_with_margin