Method DrawWidget

src/vehicle_gui.cpp:1039–1120

	}

	void DrawWidget(const Rect &r, WidgetID widget) const override
	{
		switch (widget) {
			case WID_VR_VEHICLE_PANEL_DISPLAY: {
				Vehicle *v = Vehicle::Get(this->window_number);
				DrawVehicleImage(v, r.WithX(this->sprite_left, this->sprite_right),
					VehicleID::Invalid(), EIT_IN_DETAILS, this->hscroll != nullptr ? this->hscroll->GetPosition() : 0);

				/* Highlight selected vehicles. */
				if (this->order != INVALID_VEH_ORDER_ID) break;
				int x = 0;
				switch (v->type) {
					case VEH_TRAIN: {
						VehicleSet vehicles_to_refit;
						GetVehicleSet(vehicles_to_refit, Vehicle::Get(this->selected_vehicle), this->num_vehicles);

						int left = INT32_MIN;
						int width = 0;

						/* Determine top & bottom position of the highlight.*/
						const int height = ScaleSpriteTrad(12);
						const int highlight_top = CentreBounds(r.top, r.bottom, height);
						const int highlight_bottom = highlight_top + height - 1;

						for (Train *u = Train::From(v); u != nullptr; u = u->Next()) {
							/* Start checking. */
							const bool contained = std::ranges::find(vehicles_to_refit, u->index) != vehicles_to_refit.end();
							if (contained && left == INT32_MIN) {
								left = x - this->hscroll->GetPosition() + r.left + this->vehicle_margin;
								width = 0;
							}

							/* Draw a selection. */
							if ((!contained || u->Next() == nullptr) && left != INT32_MIN) {
								if (u->Next() == nullptr && contained) {
									int current_width = u->GetDisplayImageWidth();
									width += current_width;
									x += current_width;
								}

								int right = Clamp(left + width, 0, r.right);
								left = std::max(0, left);

								if (_current_text_dir == TD_RTL) {
									right = r.Width() - left;
									left = right - width;
								}

								if (left != right) {
									Rect hr = {left, highlight_top, right, highlight_bottom};
									DrawFrameRect(hr.Expand(WidgetDimensions::scaled.bevel), COLOUR_WHITE, FrameFlag::BorderOnly);
								}

								left = INT32_MIN;
							}

							int current_width = u->GetDisplayImageWidth();
							width += current_width;