void lmcUserTreeWidget::contextMenuEvent(QContextMenuEvent* event) {
QTreeWidget::contextMenuEvent(event);
QTreeWidgetItem* item = itemAt(event->pos());
QPoint pos = event->globalPos();
if(item && event->reason() != QContextMenuEvent::Mouse) {
QRect itemRect = visualItemRect(item);
pos = itemRect.bottomLeft();
pos.ry() += itemRect.height();
pos = mapToGlobal(pos);
}
emit itemContextMenu(item, pos);
}
bool QNodesEditor::eventFilter(QObject *o, QEvent *e)
{
QGraphicsSceneMouseEvent* me = (QGraphicsSceneMouseEvent*)e;
const QPen unconnectedPen(QColor(0x3498db), 3);
const QPen errorPen(QColor(0xe74c3c), 3);
const QPen connectedPen(QColor(0x2c3e50), 3);
switch ((int) e->type())
{
case QEvent::GraphicsSceneContextMenu:
{
QGraphicsItem *item = itemAt(me->scenePos());
if (!item)
{
emit contextMenu(me);
}
else if (item->type() == QNEPort::Type)
{
emit portContextMenu(me, (QNEPort*)item);
}
else if (item->type() == QNEBlock::Type)
{
emit blockContextMenu(me, (QNEBlock*)item);
}
else if (item->type() == QNEConnection::Type)
{
emit connectionContextMenu(me, (QNEConnection*)item);
}
else
{
emit itemContextMenu(me, item);
}
}
break;
case QEvent::GraphicsSceneMousePress:
{
switch ((int) me->button())
{
case Qt::LeftButton:
{
QGraphicsItem *item = itemAt(me->scenePos());
if (item && item->type() == QNEPort::Type)
{
m_connection = new QNEConnection(0);
m_scene->addItem(m_connection);
m_connection->setPort1((QNEPort*) item);
m_connection->setPos2(me->scenePos());
m_connection->setPen(unconnectedPen);
return true;
}
else if (item && item->type() == QNEBlock::Type)
{
/* if (selBlock)
selBlock->setSelected(); */
// selBlock = (QNEBlock*) item;
}
break;
}
// case Qt::RightButton:
// {
// QGraphicsItem *item = itemAt(me->scenePos());
// if (item && (item->type() == QNEConnection::Type || item->type() == QNEBlock::Type))
// {
// delete item;
// return true;
// }
// break;
// }
}
}
case QEvent::GraphicsSceneMouseMove:
{
if (m_connection)
{
m_connection->setPos2(me->scenePos());
QGraphicsItem *item = itemAt(me->scenePos());
if (item && item->type() == QNEPort::Type)
{
QNEPort *port1 = m_connection->port1();
QNEPort *port2 = (QNEPort*) item;
if (port1->block() != port2->block() &&
port1->isOutput() != port2->isOutput() &&
port1->portType() == port2->portType() &&
(port1->portRate() == port2->portRate() || port1->portRate() == 0 || port2->portRate() == 0) &&
!port1->isConnected(port2))
{
m_connection->setPen(connectedPen);
}
else
{
m_connection->setPen(errorPen);
}
}
else
{
m_connection->setPen(unconnectedPen);
}
return true;
}
break;
}
case QEvent::GraphicsSceneMouseRelease:
{
if (m_connection && me->button() == Qt::LeftButton)
{
QGraphicsItem *item = itemAt(me->scenePos());
if (item && item->type() == QNEPort::Type)
{
QNEPort *port1 = m_connection->port1();
QNEPort *port2 = (QNEPort*) item;
if (port1->block() != port2->block() &&
port1->isOutput() != port2->isOutput() &&
port1->portType() == port2->portType() &&
!port1->isConnected(port2))
{
port1->connectedSignal.execute(port2);
port2->connectedSignal.execute(port1);
m_connection->setPort2(port2);
m_connection->setPen(connectedPen);
m_connection = 0;
return true;
}
}
delete m_connection;
m_connection = 0;
return true;
}
break;
}
}
return QObject::eventFilter(o, e);
}
