Method OnPaint

src/rail_gui.cpp:1131–1178

	}

	void OnPaint() override
	{
		const StationSpec *statspec = StationClass::Get(_station_gui.sel_class)->GetSpec(_station_gui.sel_type);

		if (_settings_client.gui.station_dragdrop) {
			SetTileSelectSize(1, 1);
		} else {
			int x = _settings_client.gui.station_numtracks;
			int y = _settings_client.gui.station_platlength;
			if (_station_gui.axis == AXIS_X) std::swap(x, y);
			if (!_remove_button_clicked) {
				SetTileSelectSize(x, y);
			}
		}

		int rad = (_settings_game.station.modified_catchment) ? CA_TRAIN : CA_UNMODIFIED;

		if (_settings_client.gui.station_show_coverage) SetTileSelectBigSize(-rad, -rad, 2 * rad, 2 * rad);

		for (uint bits = 0; bits < 7; bits++) {
			bool disable = bits >= _settings_game.station.station_spread;
			if (statspec == nullptr) {
				this->SetWidgetDisabledState(bits + WID_BRAS_PLATFORM_NUM_1, disable);
				this->SetWidgetDisabledState(bits + WID_BRAS_PLATFORM_LEN_1, disable);
			} else {
				this->SetWidgetDisabledState(bits + WID_BRAS_PLATFORM_NUM_1, HasBit(statspec->disallowed_platforms, bits) || disable);
				this->SetWidgetDisabledState(bits + WID_BRAS_PLATFORM_LEN_1, HasBit(statspec->disallowed_lengths,   bits) || disable);
			}
		}

		this->DrawWidgets();

		if (this->IsShaded()) return;
		/* 'Accepts' and 'Supplies' texts. */
		Rect r = this->GetWidget<NWidgetBase>(WID_BRAS_COVERAGE_TEXTS)->GetCurrentRect();
		const int bottom = r.bottom;
		r.bottom = INT_MAX; // Allow overflow as we want to know the required height.
		if (statspec != nullptr) r.top = DrawBadgeNameList(r, statspec->badges, GSF_STATIONS);
		r.top = DrawStationCoverageAreaText(r, SCT_ALL, rad, false) + WidgetDimensions::scaled.vsep_normal;
		r.top = DrawStationCoverageAreaText(r, SCT_ALL, rad, true);
		/* Resize background if the window is too small.
		 * Never make the window smaller to avoid oscillating if the size change affects the acceptance.
		 * (This is the case, if making the window bigger moves the mouse into the window.) */
		if (r.top > bottom) {
			this->coverage_height += r.top - bottom;
			this->ReInit();
		}
	}

	void UpdateWidgetSize(WidgetID widget, Dimension &size, [[maybe_unused]] const Dimension &padding, [[maybe_unused]] Dimension &fill, [[maybe_unused]] Dimension &resize) override
	{