Function MakeCargoesLegendLinkGraphGUI

src/linkgraph/linkgraph_gui.cpp:466–496

}

std::unique_ptr<NWidgetBase> MakeCargoesLegendLinkGraphGUI()
{
	uint num_cargo = static_cast<uint>(_sorted_cargo_specs.size());
	static const uint ENTRIES_PER_COL = 5;
	auto panel = std::make_unique<NWidgetHorizontal>(NWidContainerFlag::EqualSize);
	std::unique_ptr<NWidgetVertical> col = nullptr;

	for (uint i = 0; i < num_cargo; ++i) {
		if (i % ENTRIES_PER_COL == 0) {
			if (col != nullptr) panel->Add(std::move(col));
			col = std::make_unique<NWidgetVertical>(NWidContainerFlag::EqualSize);
		}
		auto wid = std::make_unique<NWidgetBackground>(WWT_PANEL, COLOUR_GREY, i + WID_LGL_CARGO_FIRST);
		wid->SetMinimalSize(25, 0);
		wid->SetMinimalTextLines(1, 0, FS_SMALL);
		wid->SetFill(1, 1);
		wid->SetResize(0, 0);
		col->Add(std::move(wid));
	}
	/* Fill up last row */
	for (uint i = num_cargo; i < Ceil(num_cargo, ENTRIES_PER_COL); ++i) {
		auto spc = std::make_unique<NWidgetSpacer>(25, 0);
		spc->SetMinimalTextLines(1, 0, FS_SMALL);
		spc->SetFill(1, 1);
		spc->SetResize(0, 0);
		col->Add(std::move(spc));
	}
	/* If there are no cargo specs defined, then col won't have been created so don't add it. */
	if (col != nullptr) panel->Add(std::move(col));
	return panel;
}


static constexpr std::initializer_list<NWidgetPart> _nested_linkgraph_legend_widgets = {