void
NodePainter::
drawFilledConnectionPoints(QPainter* painter,
NodeGeometry const& geom,
NodeState const& state)
{
painter->setPen(Qt::cyan);
painter->setBrush(Qt::cyan);
auto diameter = geom.connectionPointDiameter();
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);
if (!state.connectionID(portType, i).isNull())
{
painter->drawEllipse(p,
diameter * 0.4,
diameter * 0.4);
}
}
};
drawPoints(PortType::OUT);
drawPoints(PortType::IN);
}
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::
drawNodeRect(QPainter* painter,
NodeGeometry const& geom)
{
if (geom.hovered())
{
QPen p(Qt::white, 2.0);
painter->setPen(p);
}
else
{
QPen p(Qt::white, 1.5);
painter->setPen(p);
}
QLinearGradient gradient(QPointF(0.0, 0.0),
QPointF(2.0, geom.height()));
QColor darkGray1 = QColor(Qt::gray).darker(200);
QColor darkGray2 = QColor(Qt::gray).darker(250);
gradient.setColorAt(0.0, Qt::darkGray);
gradient.setColorAt(0.03, darkGray1);
gradient.setColorAt(0.97, darkGray2);
gradient.setColorAt(1.0, darkGray2.darker(110));
painter->setBrush(gradient);
unsigned int diam = geom.connectionPointDiameter();
QRectF boundary(0.0, 0.0, geom.width(), geom.height());
QMargins m(diam, diam, diam, diam);
double const radius = 3.0;
painter->drawRoundedRect(boundary.marginsAdded(m), radius, radius);
}
