Show non-learnable spells from rewardable object as greyed-out

client/widgets/CComponent.cpp

@@ -290,7 +290,10 @@ std::string CComponent::getSubtitle() const
 			return CGI->artifacts()->getById(data.subType.as<ArtifactID>())->getNameTranslated();
 		case ComponentType::SPELL_SCROLL:
 		case ComponentType::SPELL:
-			return CGI->spells()->getById(data.subType.as<SpellID>())->getNameTranslated();
+			if (data.value < 0)
+				return "{#A9A9A9|" + CGI->spells()->getById(data.subType.as<SpellID>())->getNameTranslated() + "}";
+			else
+				return CGI->spells()->getById(data.subType.as<SpellID>())->getNameTranslated();
 		case ComponentType::NONE:
 		case ComponentType::MORALE:
 		case ComponentType::LUCK:

lib/rewardable/Reward.cpp

@@ -115,7 +115,10 @@ void Rewardable::Reward::loadComponents(std::vector<Component> & comps, const CG
 		comps.emplace_back(ComponentType::ARTIFACT, entry);
 
 	for(const auto & entry : spells)
-		comps.emplace_back(ComponentType::SPELL, entry);
+	{
+		bool learnable = !h || h->canLearnSpell(entry.toEntity(VLC), true);
+		comps.emplace_back(ComponentType::SPELL, entry, learnable ?	0 : -1);
+	}
 
 	for(const auto & entry : creatures)
 		comps.emplace_back(ComponentType::CREATURE, entry.type->getId(), entry.count);