Method load

src/core/objects/object.cpp:307–461

}

Object* Object::load(QXmlStreamReader& xml, Map* map, const SymbolDictionary& symbol_dict, const Symbol* symbol)
{
	Q_ASSERT(xml.name() == literal::object);
	
	XmlElementReader object_element(xml);
	
	Object::Type object_type = object_element.attribute<Object::Type>(literal::type);
	Object* object = Object::getObjectForType(object_type);
	if (!object)
		throw FileFormatException(::OpenOrienteering::ImportExport::tr("Error while loading an object of type %1.").arg(object_type));
	
	object->map = map;
	
	if (symbol)
		object->symbol = symbol;
	else
	{
		QString symbol_id =  object_element.attribute<QString>(literal::symbol);
		bool conversion_ok;
		const auto id_converted = symbol_id.toInt(&conversion_ok);
		if (!symbol_id.isEmpty() && !conversion_ok)
		{
			delete object;
			throw FileFormatException(::OpenOrienteering::ImportExport::tr("Malformed symbol ID '%1' at line %2 column %3.")
		                              .arg(symbol_id).arg(xml.lineNumber())
		                              .arg(xml.columnNumber()));
		}
		object->symbol = symbol_dict[id_converted]; // FIXME: cannot work for forward references
		// NOTE: object->symbol may be nullptr.
	}
	
	if (!object->symbol || !object->symbol->isTypeCompatibleTo(object))
	{
		// Throwing an exception will cause loading to fail.
		// Rather than not loading the broken file at all,
		// use the same symbols which are used for importing GPS tracks etc.
		// FIXME: Implement a way to send a warning to the user.
		switch (object_type)
		{
			case Point:
				object->symbol = Map::getUndefinedPoint();
				break;
			case Path:
				object->symbol = Map::getUndefinedLine();
				break;
			case Text:
				object->symbol = Map::getUndefinedText();
				break;
			default:
				throw FileFormatException(
				  ::OpenOrienteering::ImportExport::tr("Unable to find symbol for object at %1:%2.").
				  arg(xml.lineNumber()).arg(xml.columnNumber()) );
		}
	}
	
	if (object->symbol->isRotatable())
	{
		object->rotation = object_element.attribute<qreal>(literal::rotation);