C++ NodeGuiPtr::moveBelowPositionRecursively方法代码示例

//.........这里部分代码省略.........
            position.setY(y);

            int index = selectedNodeInternal->getPreferredInputForConnection();
            if (index != -1) {
                bool ok = proj->connectNodes(index, createdNodeInternal, selectedNodeInternal, true);
                Q_UNUSED(ok);
            }
            //} // if (isSelectedViewer) {*/
        } // if (nbConnectedInput == 0) {
    } else {
        ///pop it below the selected node

        const NodesWList& outputs = selectedNodeInternal->getGuiOutputs();
        if ( !createdNodeInternal->isOutputNode() || outputs.empty() ) {
            QSize selectedNodeSize = selected->getSize();
            QSize createdNodeSize = node->getSize();
            QPointF selectedNodeMiddlePos = selected->scenePos() +
                                            QPointF(selectedNodeSize.width() / 2, selectedNodeSize.height() / 2);

            ///actually move the created node where the selected node is
            position.setX(selectedNodeMiddlePos.x() - createdNodeSize.width() / 2);
            position.setY(selectedNodeMiddlePos.y() + (selectedNodeSize.height() / 2) + NodeGui::DEFAULT_OFFSET_BETWEEN_NODES);

            QRectF createdNodeRect( position.x(), position.y(), createdNodeSize.width(), createdNodeSize.height() );

            ///and move the selected node below recusively
            for (NodesWList::const_iterator it = outputs.begin(); it != outputs.end(); ++it) {
                NodePtr output = it->lock();
                if (!output) {
                    continue;
                }
                NodeGuiIPtr output_i = output->getNodeGui();
                if (!output_i) {
                    continue;
                }
                NodeGuiPtr outputGui = toNodeGui( output_i );
                assert(outputGui);
                if (outputGui) {
                    outputGui->moveBelowPositionRecursively(createdNodeRect);
                }
            }

            ///Connect the created node to the selected node
            ///finally we connect the created node to the selected node
            int createdInput = createdNodeInternal->getPreferredInputForConnection();
            if (createdInput != -1) {
                ignore_result( createdNodeInternal->connectInput(selectedNodeInternal, createdInput) );
            }

            if ( !createdNodeInternal->isOutputNode() ) {
                ///we find all the nodes that were previously connected to the selected node,
                ///and connect them to the created node instead.
                std::map<NodePtr, int> outputsConnectedToSelectedNode;
                selectedNodeInternal->getOutputsConnectedToThisNode(&outputsConnectedToSelectedNode);

                for (std::map<NodePtr, int>::iterator it = outputsConnectedToSelectedNode.begin();
                     it != outputsConnectedToSelectedNode.end(); ++it) {
                    if ( it->first->getParentMultiInstanceName().empty() && (it->first != createdNodeInternal) ) {
                        /*
                           Internal rotopaint nodes are connecting to the Rotopaint itself... make sure not to connect
                           internal nodes of the tree
                         */
                        RotoDrawableItemPtr stroke = it->first->getAttachedRotoItem();
                        if ( stroke && (stroke->getContext()->getNode() == selectedNodeInternal) ) {
                            continue;
                        }

                        ignore_result( it->first->replaceInput(createdNodeInternal, it->second) );
//                        bool ok = proj->disconnectNodes(selectedNodeInternal.get(), it->first);
//                        if (ok) {
//                            ignore_result(proj->connectNodes(it->second, createdNodeInternal, it->first));
//                        }
                        //assert(ok); Might not be ok if the disconnectNodes() action above was queued
                    }
                }
            }
        } else {
            ///the created node is an output node and the selected node already has several outputs, create it aside
            QSize createdNodeSize = node->getSize();
            QRectF selectedBbox = selected->mapToScene( selected->boundingRect() ).boundingRect();
            QPointF selectedCenter = selectedBbox.center();
            double y = selectedCenter.y() + selectedBbox.height() / 2.
                       + NodeGui::DEFAULT_OFFSET_BETWEEN_NODES;
            double x = selectedCenter.x() + (int)outputs.size() * 150;

            position.setX(x  - createdNodeSize.width() / 2.);
            position.setY(y);


            //Don't pop a dot, it will most likely annoy the user, just fallback on behavior 0

            int index = createdNodeInternal->getPreferredInputForConnection();
            bool ok = proj->connectNodes(index, selectedNodeInternal, createdNodeInternal, true);
            Q_UNUSED(ok);
        }
    }
    position = node->mapFromScene(position);
    position = node->mapToParent(position);
    node->setPosition( position.x(), position.y() );
} // moveNodesForIdealPosition