Method GetDropDownItem

src/dropdown.cpp:233–257

* Find the dropdown item under the cursor. * @param[out] result Selected item, if function returns \c true. * @param[out] click_result Click result from OnClick of Selected item, if function returns \c true. * @return Cursor points to a dropdown item. */

	 * @return Cursor points to a dropdown item.
	 */
	bool GetDropDownItem(int &result, int &click_result)
	{
		if (GetWidgetFromPos(this, _cursor.pos.x - this->left, _cursor.pos.y - this->top) < 0) return false;

		const Rect &r = this->GetWidget<NWidgetBase>(WID_DM_ITEMS)->GetCurrentRect().Shrink(WidgetDimensions::scaled.dropdownlist).Shrink(WidgetDimensions::scaled.dropdowntext, RectPadding::zero);
		int click_y = _cursor.pos.y - this->top - r.top;
		int y = -this->vscroll->GetPosition();
		int y_end = r.Height();

		for (const auto &item : this->list) {
			int item_height = item->Height();

			/* Skip items that are scrolled up */
			if (y > y_end) break;
			if (click_y >= y && click_y < y + item_height) {
				if (item->masked || !item->Selectable()) return false;
				result = item->result;
				click_result = item->OnClick(r.WithY(0, item_height - 1), {_cursor.pos.x - this->left, click_y - y});
				return true;
			}
			y += item_height;
		}

		return false;
	}

	void DrawWidget(const Rect &r, WidgetID widget) const override
	{