Method copy

src/gui/map/map_editor.cpp:1896–1945

}

void MapEditorController::copy()
{
	if (map->getNumSelectedObjects() == 0)
		return;
	
	// Create map containing required objects and their symbol and color dependencies
	Map copy_map;
	copy_map.setScaleDenominator(map->getScaleDenominator());
	
	std::vector<bool> symbol_filter;
	symbol_filter.assign(map->getNumSymbols(), false);
	for (const auto* object : map->selectedObjects())
	{
		int symbol_index = map->findSymbolIndex(object->getSymbol());
		if (symbol_index >= 0)
			symbol_filter[symbol_index] = true;
	}
	
	// Copy all colors. This improves preservation of relative order during paste.
	copy_map.importMap(*map, Map::ColorImport);
	
	// Export symbols and colors into copy_map
	auto symbol_map = copy_map.importMap(*map, Map::MinimalSymbolImport, &symbol_filter, -1, true);
	
	// Duplicate all selected objects into copy map
	for (const auto* object : map->selectedObjects())
	{
		auto* new_object = object->duplicate();
		if (symbol_map.contains(new_object->getSymbol()))
			new_object->setSymbol(symbol_map.value(new_object->getSymbol()), true);
		
		copy_map.addObject(new_object);
	}
	
	// Save map to memory
	QBuffer buffer;
	if (!copy_map.exportToIODevice(buffer))
	{
		QMessageBox::warning(nullptr, tr("Error"), tr("An internal error occurred, sorry!"));
		return;
	}
	
	// Put buffer into clipboard
	auto* mime_data = new QMimeData();
	mime_data->setData(MimeType::OpenOrienteeringObjects(), buffer.data());
	QApplication::clipboard()->setMimeData(mime_data);
	
	// Show message
	window->showStatusBarMessage(tr("Copied %n object(s)", nullptr, map->getNumSelectedObjects()), 2000);
}


void MapEditorController::paste()