Method determineColorsInUse

src/core/map.cpp:1311–1362

}

void Map::determineColorsInUse(const std::vector< bool >& by_which_symbols, std::vector< bool >& out) const
{
	if (getNumSymbols() == 0)
	{
		out.clear();
		return;
	}
	
	Q_ASSERT(int(by_which_symbols.size()) == getNumSymbols());
	out.assign(std::size_t(getNumColors()), false);
	for (std::size_t c = 0, last = std::size_t(getNumColors()); c != last; ++c)
	{
		for (std::size_t s = 0, last_s = std::size_t(getNumSymbols()); s != last_s; ++s)
		{
			if (by_which_symbols[s] && getSymbol(int(s))->containsColor(getColor(int(c))))
			{
				out[c] = true;
				break;
			}
		}
	}
	
	// Include required spot colors, too
	for (std::size_t c = 0, last_c = std::size_t(getNumColors()); c != last_c; ++c)
	{
		if (out[c])
			continue;
		
		const auto* color = getColor(int(c));
		if (color->getSpotColorMethod() != MapColor::SpotColor)
			continue;
		
		for (std::size_t o = 0, last_o = std::size_t(getNumColors()); o != last_o; ++o)
		{
			if (!out[o])
				continue;
			
			const auto* other = getColor(int(o));
			if (other->getSpotColorMethod() != MapColor::CustomColor)
				continue;
			
			const auto& components = other->getComponents();
			if (std::any_of(begin(components), end(components), [color](auto& component) {
			    return component.spot_color == color;
			}))
			{
				out[c] = true;
				break;
			}
		}
	}
}

void Map::checkSpotColorPresence()
{