Example #1
0
/**
 * Destructor for node - removes edge controls on incidient edges and disconnects item from scene
 */
GNode::~GNode()
{
    graph()->invalidateRanking();
    if ( ( isEdgeControl() || isEdgeLabel())
         && isNotNullP( firstPred()) 
         && isNotNullP( firstSucc())
         && isNotNullP( firstPred()->pred())
         && isNotNullP( firstSucc()->succ()))
    {
        GRAPH_ASSERTD( areEqP( firstPred()->style(), firstSucc()->style()),
                       "Different styles on the same edge");
        GEdge *e = graph()->newEdge( firstPred()->pred(), firstSucc()->succ());
        e->setStyle( firstPred()->style());
    } else if ( isSimple())
    {
        QList< GNode *> nodes;
        GEdge* edge;
		Marker m = graph()->newMarker();
        for ( edge = firstSucc(); isNotNullP( edge); edge = edge->nextSucc())
        {
            edge->item()->adjust();
            GNode* succ = edge->succ();

            while ( succ->isEdgeControl() || succ->isEdgeLabel())
            {
                assert( isNotNullP( succ->firstSucc()));
                if ( succ->mark( m))
				{
					nodes << succ;
				}
                succ = succ->firstSucc()->succ();
            }
        }
        for ( edge = firstPred(); isNotNullP( edge); edge = edge->nextPred())
        {
            if ( edge->isSelf()) // We've already processed this one in previous loop
				continue;

			edge->item()->adjust();
            GNode* pred = edge->pred();

            while ( pred->isEdgeControl() || pred->isEdgeLabel())
            {
                assert( isNotNullP( pred->firstPred()));
                if ( pred->mark( m))
				{
					nodes << pred;
				}
                pred = pred->firstPred()->pred();
            }
        }
        
        foreach ( GNode *n, nodes)
        {
            graph()->deleteNode( n);
        }
		graph()->freeMarker( m);
    }
Example #2
0
/**
 * Change edge's style
 */
void GGraph::setEdgeStyle( GStyle *style)
{
    if ( sel_edges.isEmpty())
        return;

    GEdge* edge = sel_edges.first();
    edge->setStyle( style);
    edge->item()->adjust();
}
Example #3
0
void 
EdgeItem::keyPressEvent(QKeyEvent *event)
{
    int key = event->key();
    GNode *n = NULL;
    GEdge *e = NULL;
    VEdge vedge( edge());
    NavSector sector = edge()->graph()->nodeNavigationSector();
    GNode *curr_node = edge()->graph()->nodeInFocus();
    NodeNav node_nav( curr_node, sector);
    switch( key)
    {
        case Qt::Key_Up:
            if ( isNotNullP( curr_node) 
                 && ( sector == LEFT_SECTOR || sector == RIGHT_SECTOR))
            {
                e = node_nav.edgeInDir( edge(), NAV_DIR_UP);
            } else
            {
                n = vedge.nodeUp();
            }
            break;
        case Qt::Key_Down:
            if ( isNotNullP( curr_node) 
                 && ( sector == LEFT_SECTOR || sector == RIGHT_SECTOR) )
            {
                e = node_nav.edgeInDir( edge(), NAV_DIR_DOWN);
            } else
            {
                n = vedge.nodeDown();
            }
            break;
        case Qt::Key_Left:
            if ( isNotNullP( curr_node) 
                 && ( sector == TOP_SECTOR || sector == BOTTOM_SECTOR) )
            {
                e = node_nav.edgeInDir( edge(), NAV_DIR_LEFT);
            } else
            {
                n = vedge.nodeLeft();
            }
            break;
        case Qt::Key_Right:
            if ( isNotNullP( curr_node) 
                 && ( sector == TOP_SECTOR || sector == BOTTOM_SECTOR) )
            {
                e = node_nav.edgeInDir( edge(), NAV_DIR_RIGHT);
            } else
            {
                n = vedge.nodeRight();
            }
            break;
        default:
            break;
    }
    if ( isNotNullP( n))
    {
        if ( edge()->graph()->view()->isContext())
        {
            edge()->graph()->emptySelection();
            edge()->graph()->selectNode( n);
            edge()->graph()->view()->findContext();
        }
        edge()->graph()->view()->focusOnNode( n, true);
        
        scene()->clearFocus();
        scene()->clearSelection();
        n->item()->setFocus();
        n->item()->setSelected( true);
    } else if ( isNotNullP( e))
    {
        // Get focus on edge
        scene()->clearFocus();
        scene()->clearSelection();
        e->item()->setFocus();
        e->item()->setSelected( true);
    }
    //QGraphicsItem::keyPressEvent( event);
}