Method UpdateWidgetSize

src/rail_gui.cpp:1524–1533

	}

	void UpdateWidgetSize(WidgetID widget, Dimension &size, [[maybe_unused]] const Dimension &padding, [[maybe_unused]] Dimension &fill, [[maybe_unused]] Dimension &resize) override
	{
		if (widget == WID_BS_DRAG_SIGNALS_DENSITY_LABEL) {
			/* Two digits for signals density. */
			size.width = std::max(size.width, 2 * GetDigitWidth() + padding.width + WidgetDimensions::scaled.framerect.Horizontal());
		} else if (IsInsideMM(widget, WID_BS_SEMAPHORE_NORM, WID_BS_ELECTRIC_PBS_OWAY + 1)) {
			size.width = std::max(size.width, this->sig_sprite_size.width + padding.width);
			size.height = std::max(size.height, this->sig_sprite_size.height + padding.height);
		}
	}

	std::string GetWidgetString(WidgetID widget, StringID stringid) const override
	{