void
NodeGraph::moveNodesForIdealPosition(const NodeGuiPtr &node,
const NodeGuiPtr &selected,
bool autoConnect)
{
BackdropGuiPtr isBd = toBackdropGui(node);
if (isBd) {
return;
}
QRectF viewPos = visibleSceneRect();
///3 possible values:
/// 0 = default , i.e: we pop the node in the middle of the graph's current view
/// 1 = pop the node above the selected node and move the inputs of the selected node a little
/// 2 = pop the node below the selected node and move the outputs of the selected node a little
int behavior = 0;
if (!selected || !autoConnect) {
behavior = 0;
} else {
///this function is redundant with Project::autoConnect, depending on the node selected
///and this node we make some assumptions on to where we could put the node.
// 1) selected is output
// a) created is output --> fail
// b) created is input --> connect input
// c) created is regular --> connect input
// 2) selected is input
// a) created is output --> connect output
// b) created is input --> fail
// c) created is regular --> connect output
// 3) selected is regular
// a) created is output--> connect output
// b) created is input --> connect input
// c) created is regular --> connect output
///1)
if ( selected->getNode()->isOutputNode() ) {
///case 1-a) just do default we don't know what else to do
if ( node->getNode()->isOutputNode() ) {
behavior = 0;
} else {
///for either cases 1-b) or 1-c) we just connect the created node as input of the selected node.
behavior = 1;
}
}
///2) and 3) are similar except for case b)
else {
///case 2 or 3- a): connect the created node as output of the selected node.
if ( node->getNode()->isOutputNode() ) {
behavior = 2;
}
///case b)
else if ( node->getNode()->isInputNode() ) {
if ( selected->getNode()->getEffectInstance()->isReader() ) {
///case 2-b) just do default we don't know what else to do
behavior = 0;
} else {
///case 3-b): connect the created node as input of the selected node
behavior = 1;
}
}
///case c) connect created as output of the selected node
else {
behavior = 2;
}
}
}
NodePtr createdNodeInternal = node->getNode();
NodePtr selectedNodeInternal;
if (selected) {
selectedNodeInternal = selected->getNode();
}
///if behaviour is 1 , just check that we can effectively connect the node to avoid moving them for nothing
///otherwise fallback on behaviour 0
if (behavior == 1) {
const std::vector<NodeWPtr > & inputs = selected->getNode()->getGuiInputs();
bool oneInputEmpty = false;
for (std::size_t i = 0; i < inputs.size(); ++i) {
if ( !inputs[i].lock() ) {
oneInputEmpty = true;
break;
}
}
if (!oneInputEmpty) {
behavior = 0;
}
}
ProjectPtr proj = getGui()->getApp()->getProject();
///default
QPointF position;
if (behavior == 0) {
position.setX( ( viewPos.bottomRight().x() + viewPos.topLeft().x() ) / 2. );
position.setY( ( viewPos.topLeft().y() + viewPos.bottomRight().y() ) / 2. );
} else if (behavior == 1) {
///pop it above the selected node
///If this is the first connected input, insert it in a "linear" way so the tree remains vertical
int nbConnectedInput = 0;
const std::vector<Edge*> & selectedNodeInputs = selected->getInputsArrows();
for (std::vector<Edge*>::const_iterator it = selectedNodeInputs.begin(); it != selectedNodeInputs.end(); ++it) {
NodeGuiPtr input;
if (*it) {
input = (*it)->getSource();
}
if (input) {
++nbConnectedInput;
}
}
///connect it to the first input
QSize selectedNodeSize = selected->getSize();
QSize createdNodeSize = node->getSize();
if (nbConnectedInput == 0) {
QPointF selectedNodeMiddlePos = selected->scenePos() +
QPointF(selectedNodeSize.width() / 2, selectedNodeSize.height() / 2);
position.setX(selectedNodeMiddlePos.x() - createdNodeSize.width() / 2);
position.setY( selectedNodeMiddlePos.y() - selectedNodeSize.height() / 2 - NodeGui::DEFAULT_OFFSET_BETWEEN_NODES
- createdNodeSize.height() );
QRectF createdNodeRect( position.x(), position.y(), createdNodeSize.width(), createdNodeSize.height() );
///now that we have the position of the node, move the inputs of the selected node to make some space for this node
for (std::vector<Edge*>::const_iterator it = selectedNodeInputs.begin(); it != selectedNodeInputs.end(); ++it) {
if ( (*it)->hasSource() ) {
(*it)->getSource()->moveAbovePositionRecursively(createdNodeRect);
}
}
int selectedInput = selectedNodeInternal->getPreferredInputForConnection();
if (selectedInput != -1) {
bool ok = proj->connectNodes(selectedInput, createdNodeInternal, selectedNodeInternal, true);
Q_UNUSED(ok);
}
} else {
//ViewerInstancePtr isSelectedViewer = selectedNodeInternal->isEffectViewerInstance();
//Don't pop a dot, it will most likely annoy the user, just fallback on behavior 0
/* position.setX( ( viewPos.bottomRight().x() + viewPos.topLeft().x() ) / 2. );
position.setY( ( viewPos.topLeft().y() + viewPos.bottomRight().y() ) / 2. );
}
else {
*/
QRectF selectedBbox = selected->mapToScene( selected->boundingRect() ).boundingRect();
QPointF selectedCenter = selectedBbox.center();
double y = selectedCenter.y() - selectedNodeSize.height() / 2.
- NodeGui::DEFAULT_OFFSET_BETWEEN_NODES - createdNodeSize.height();
double x = selectedCenter.x() + nbConnectedInput * 150;
position.setX(x - createdNodeSize.width() / 2.);
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
