Method GetPositionOnLegend

src/smallmap_gui.cpp:1401–1415

* Determines the mouse position on the legend. * @param pt Mouse position. * @return Legend item under the mouse. */

	 * @return Legend item under the mouse.
	 */
	int GetPositionOnLegend(Point pt)
	{
		const NWidgetBase *wi = this->GetWidget<NWidgetBase>(WID_SM_LEGEND);
		uint line = (pt.y - wi->pos_y - WidgetDimensions::scaled.framerect.top) / GetCharacterHeight(FS_SMALL);
		uint columns = this->GetNumberColumnsLegend(wi->current_x);
		uint number_of_rows = this->GetNumberRowsLegend(columns);
		if (line >= number_of_rows) return -1;

		bool rtl = _current_text_dir == TD_RTL;
		int x = pt.x - wi->pos_x;
		if (rtl) x = wi->current_x - x;
		uint column = (x - WidgetDimensions::scaled.framerect.left) / this->column_width;

		return (column * number_of_rows) + line;
	}

	/** Update all the links on the map. */
	void UpdateLinks()