void
NodePainter::
drawConnectionPoints(QPainter* painter,
NodeGeometry const& geom,
NodeState const& state)
{
painter->setBrush(QColor(Qt::darkGray));
auto diameter = geom.connectionPointDiameter();
auto reducedDiameter = diameter * 0.6;
auto drawPoints =
[&](PortType portType)
{
size_t n = state.getEntries(portType).size();
for (size_t i = 0; i < n; ++i)
{
QPointF p = geom.connectionPointScenePosition(i, portType);
double r = 1.0;
if (state.isReacting() &&
state.getEntries(portType)[i].isNull())
{
auto diff = geom.draggingPos() - p;
double dist = std::sqrt(QPointF::dotProduct(diff, diff));
double const thres = 40.0;
r = (dist < thres) ?
(2.0 - dist / thres ) :
1.0;
}
painter->drawEllipse(p,
reducedDiameter * r,
reducedDiameter * r);
}
};
drawPoints(PortType::OUT);
drawPoints(PortType::IN);
}
void
NodePainter::
drawConnectionPoints(QPainter* painter,
NodeGeometry const& geom,
NodeState const& state,
NodeDataModel const * model,
FlowScene const & scene)
{
NodeStyle const& nodeStyle = model->nodeStyle();
auto const &connectionStyle = StyleCollection::connectionStyle();
float diameter = nodeStyle.ConnectionPointDiameter;
auto reducedDiameter = diameter * 0.6;
for(PortType portType: {PortType::Out, PortType::In})
{
size_t n = state.getEntries(portType).size();
for (unsigned int i = 0; i < n; ++i)
{
QPointF p = geom.portScenePosition(i, portType);
auto const & dataType = model->dataType(portType, i);
bool canConnect = (state.getEntries(portType)[i].empty() ||
(portType == PortType::Out &&
model->portOutConnectionPolicy(i) == NodeDataModel::ConnectionPolicy::Many) );
double r = 1.0;
if (state.isReacting() &&
canConnect &&
portType == state.reactingPortType())
{
auto diff = geom.draggingPos() - p;
double dist = std::sqrt(QPointF::dotProduct(diff, diff));
bool typeConvertable = false;
{
if (portType == PortType::In)
{
typeConvertable = scene.registry().getTypeConverter(state.reactingDataType(), dataType) != nullptr;
}
else
{
typeConvertable = scene.registry().getTypeConverter(dataType, state.reactingDataType()) != nullptr;
}
}
if (state.reactingDataType().id == dataType.id || typeConvertable)
{
double const thres = 40.0;
r = (dist < thres) ?
(2.0 - dist / thres ) :
1.0;
}
else
{
double const thres = 80.0;
r = (dist < thres) ?
(dist / thres) :
1.0;
}
}
if (connectionStyle.useDataDefinedColors())
{
painter->setBrush(connectionStyle.normalColor(dataType.id));
}
else
{
painter->setBrush(nodeStyle.ConnectionPointColor);
}
painter->drawEllipse(p,
reducedDiameter * r,
reducedDiameter * r);
}
};
}
