// Graph layout stuff
void MainWindow::applyRandomLayout()
{
RandomNumberGenerator rng(QDateTime::currentMSecsSinceEpoch());
// Define the topology to work in
QRectF rc(m_graphView->visibleRegion().boundingRect());
rc.adjust(-10.0f, -10.0f, -10.0f, -10.0f);
rc.moveTo(-rc.width() / 2.0f, -rc.height() / 2.0f);
Topology top(rng, rc.left(), rc.top(), rc.right(), rc.bottom());
// Apply the layout
boost::random_graph_layout(m_graph,
get(&NodeProperties::pos, m_graph), top);
// Forward the calculated values into the graphics objects
std::pair<DigraphVertexIterator, DigraphVertexIterator> iterators =
boost::vertices(m_graph);
DigraphVertexIterator it = iterators.first;
for (; it != iterators.second; ++it) {
TopologicalPoint pt = m_graph[*it].pos;
NodeItem* node = m_graph[*it].item;
node->setPos(pt[0], pt[1]);
}
}
void NodeMove::redo() {
NodeItem *item = scene->findItem(node_id);
item->setFlag(QGraphicsItem::ItemSendsGeometryChanges, false);
item->setPos(_new);
scene->updateConnections(item);
item->setFlag(QGraphicsItem::ItemSendsGeometryChanges, true);
//scene->update();
}
void DeleteNode::undo() {
Node *node = scene->node_reg->createNode(node_class);
scene->model->addNode(node_id, node);
NodeItem *nitem = new NodeItem(node);
nitem->restoreParameters(parameters);
SimulationParameters sp = scene->simulation->getSimulationParameters();
node->init(sp.start + seconds(sp.dt), sp.stop, sp.dt);
nitem->updatePorts();
nitem->setPos(pos);
scene->add(nitem);
//scene->update();
}
void RxDev::on_pushButton_managerNodelet_clicked()
{
NodeItem * newNode;
newNode = new NodeItem("","nodelet",QStringList(),QStringList(),QStringList(),QStringList());
newNode->setType("nodelet");
newNode->setArgs("manager");
newNode->setLocation(findSpace(QPoint(0,55)));
newNode->setColor(Qt::yellow);
newNode->setPos(findSpace(QPoint(0,55)));
if (newNode->getNodeData()==true){
scene->addItem(newNode);
}
}
/*!\brief reimplementation of the dropEvent
*
* Creates a node item if a node is dropped in the view.
* The neccessary nodeinformation is fetched during the mousepressaction for the drag event
* in RxDev::selectionHandle_availableNodes.
*/
void LaunchFileView::dropEvent(QDropEvent *event) {
NodeItem * newNode;
newNode = new NodeItem(selectedNodeName,selectedNodePackage,selectedNodeSubscriptions,
selectedNodePublications,selectedNodeServices,selectedNodeParameters);
newNode->setLocation(mapToScene(event->pos()));
newNode->setPos(mapToScene(event->pos()));
if (newNode->getNodeData()==true){
scene()->addItem(newNode);
}
selectedBox->setColor(Qt::black);
selectedBox= newNode;
}
void RxDev::on_pushButton_blankNode_clicked()
{
NodeItem * newNode;
newNode = new NodeItem("","",QStringList(),QStringList(),QStringList(),QStringList());
newNode->setType("_blank_node");
newNode->setLocation(findSpace(QPoint(0,55)));
newNode->setColor(Qt::yellow);
newNode->setPos(findSpace(QPoint(0,55)));
if (newNode->getNodeData()==true){
scene->addItem(newNode);
}
}
koregui::NodeItem* koregui::SceneViewer
::createNode(kore::SceneNode* sourcenode,
int x,
int y) {
NodeItem* nodeItem = new NodeItem(sourcenode);
_scene.addItem(nodeItem);
std::vector<kore::SceneNodePtr> pnode = sourcenode->getChildren();
int startx = x -(estimateTreeWidth(sourcenode)/2);
for (unsigned int i = 0; i<pnode.size(); i++) {
int localwidth = estimateTreeWidth(pnode[i].get());
NodePathItem* path = new NodePathItem(nodeItem,
createNode(pnode[i].get(),
startx + localwidth/2,
y + nodeItem->getHeight() + 80));
path->setZValue(-1);
_scene.addItem(path);
startx += localwidth;
}
nodeItem->setPos(x, y);
return nodeItem;
}
void Main::addMesh()
{
int x0 = 0;
int y0 = 0;
if ( !tb ) tb = new QBrush( Qt::red );
if ( !tp ) tp = new QPen( Qt::black );
int nodecount = 0;
int w = int(canvas.width());
int h = int(canvas.height());
const int dist = 30;
int rows = h / dist;
int cols = w / dist;
#ifndef QT_NO_PROGRESSDIALOG
Q3ProgressDialog progress( "Creating mesh...", "Abort", rows,
this, "progress", TRUE );
#endif
canvas.update();
Q3MemArray<NodeItem*> lastRow(cols);
for ( int j = 0; j < rows; j++ ) {
int n = j%2 ? cols-1 : cols;
NodeItem *prev = 0;
for ( int i = 0; i < n; i++ ) {
NodeItem *el = new NodeItem;
canvas.addItem(el);
nodecount++;
int r = qrand();
int xrand = r %20;
int yrand = (r/20) %20;
el->setPos( xrand + x0 + i*dist + (j%2 ? dist/2 : 0 ),
yrand + y0 + j*dist );
if ( j > 0 ) {
if ( i < cols-1 )
canvas.addItem(new EdgeItem( lastRow[i], el));
if ( j%2 )
canvas.addItem(new EdgeItem( lastRow[i+1], el));
else if ( i > 0 )
canvas.addItem(new EdgeItem( lastRow[i-1], el));
}
if ( prev ) {
canvas.addItem(new EdgeItem( prev, el));
}
if ( i > 0 ) lastRow[i-1] = prev;
prev = el;
}
lastRow[n-1]=prev;
#ifndef QT_NO_PROGRESSDIALOG
progress.setProgress( j );
if ( progress.wasCancelled() )
break;
#endif
}
#ifndef QT_NO_PROGRESSDIALOG
progress.setProgress( rows );
#endif
// qDebug( "%d nodes, %d edges", nodecount, EdgeItem::count() );
}
void MainWindow::applySpringLayout()
{
ConstantValueDoubleMap weights(1.0f);
RandomNumberGenerator rng(QDateTime::currentMSecsSinceEpoch());
// Create an undirected copy of the graph
QMap<GraphVertex, DigraphVertex> mapDtoU;
QMap<DigraphVertex, GraphVertex> mapUtoD;
Graph g;
{
// Copy the nodes
std::pair<DigraphVertexIterator, DigraphVertexIterator> digraphVertices
= boost::vertices(m_graph);
DigraphVertexIterator vit = digraphVertices.first;
for (; vit != digraphVertices.second; vit++) {
// Add the vertex
GraphVertex v = boost::add_vertex(m_graph[*vit], g);
// Create the mapping
mapDtoU[*vit] = v;
mapUtoD[v] = *vit;
}
// Copy the edges
std::pair<Digraph::edge_iterator, Digraph::edge_iterator> digraphEdges
= boost::edges(m_graph);
Digraph::edge_iterator eit = digraphEdges.first;
for (; eit != digraphEdges.second; eit++) {
// Get the nodes in terms of the undirected graph
DigraphVertex src = boost::source(*eit, m_graph);
DigraphVertex tgt = boost::target(*eit, m_graph);
// Add an edge into the undirected graph
boost::add_edge(mapDtoU[src], mapDtoU[tgt], m_graph[*eit], g);
}
}
// Define the topology to work in
QRectF rc(m_graphView->visibleRegion().boundingRect());
float adjH = rc.width() * 0.1f;
float adjV = rc.height() * 0.1f;
rc.adjust(adjH, adjV, -adjH, -adjV);
rc.moveTo(-rc.width() / 2.0f, -rc.height() / 2.0f);
Topology top(rng, rc.left(), rc.top(), rc.right(), rc.bottom());
MaxIterationsLayoutTolerance<double> done(
boost::num_vertices(m_graph) * m_controlsDock->maxIterations(),
m_controlsDock->layoutTolerance());
// Seed with a random layout
boost::random_graph_layout(g, get(&NodeProperties::pos, g), top);
// Now apply the force-directed layout
boost::kamada_kawai_spring_layout(g,
get(&NodeProperties::pos, g), weights, top,
boost::side_length(rc.width()), done);
// Forward the calculated values into the graphics objects
std::pair<GraphVertexIterator, GraphVertexIterator> iterators =
boost::vertices(g);
GraphVertexIterator it = iterators.first;
for (; it != iterators.second; ++it) {
TopologicalPoint pt = g[*it].pos;
NodeItem* node = g[*it].item;
// Set the scene item
node->setPos(pt[0], pt[1]);
// Update the digraph
m_graph[mapUtoD[*it]].pos = pt;
}
}
