void
NodePainter::
drawNodeRect(QPainter* painter,
NodeGeometry const& geom,
NodeDataModel const* model,
NodeGraphicsObject const & graphicsObject)
{
NodeStyle const& nodeStyle = model->nodeStyle();
auto color = graphicsObject.isSelected()
? nodeStyle.SelectedBoundaryColor
: nodeStyle.NormalBoundaryColor;
if (geom.hovered())
{
QPen p(color, nodeStyle.HoveredPenWidth);
painter->setPen(p);
}
else
{
QPen p(color, nodeStyle.PenWidth);
painter->setPen(p);
}
QLinearGradient gradient(QPointF(0.0, 0.0),
QPointF(2.0, geom.height()));
gradient.setColorAt(0.0, nodeStyle.GradientColor0);
gradient.setColorAt(0.03, nodeStyle.GradientColor1);
gradient.setColorAt(0.97, nodeStyle.GradientColor2);
gradient.setColorAt(1.0, nodeStyle.GradientColor3);
painter->setBrush(gradient);
float diam = nodeStyle.ConnectionPointDiameter;
QRectF boundary( -diam, -diam, 2.0 * diam + geom.width(), 2.0 * diam + geom.height());
double const radius = 3.0;
painter->drawRoundedRect(boundary, radius, radius);
}
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);
}
void
NodePainter::
drawValidationRect(QPainter * painter,
NodeGeometry const & geom,
NodeDataModel const * model,
NodeGraphicsObject const & graphicsObject)
{
auto modelValidationState = model->validationState();
if (modelValidationState != NodeValidationState::Valid)
{
NodeStyle const& nodeStyle = model->nodeStyle();
auto color = graphicsObject.isSelected()
? nodeStyle.SelectedBoundaryColor
: nodeStyle.NormalBoundaryColor;
if (geom.hovered())
{
QPen p(color, nodeStyle.HoveredPenWidth);
painter->setPen(p);
}
else
{
QPen p(color, nodeStyle.PenWidth);
painter->setPen(p);
}
//Drawing the validation message background
if (modelValidationState == NodeValidationState::Error)
{
painter->setBrush(nodeStyle.ErrorColor);
}
else
{
painter->setBrush(nodeStyle.WarningColor);
}
double const radius = 3.0;
float diam = nodeStyle.ConnectionPointDiameter;
QRectF boundary(-diam,
-diam + geom.height() - geom.validationHeight(),
2.0 * diam + geom.width(),
2.0 * diam + geom.validationHeight());
painter->drawRoundedRect(boundary, radius, radius);
painter->setBrush(Qt::gray);
//Drawing the validation message itself
QString const &errorMsg = model->validationMessage();
QFont f = painter->font();
QFontMetrics metrics(f);
auto rect = metrics.boundingRect(errorMsg);
QPointF position((geom.width() - rect.width()) / 2.0,
geom.height() - (geom.validationHeight() - diam) / 2.0);
painter->setFont(f);
painter->setPen(nodeStyle.FontColor);
painter->drawText(position, errorMsg);
}
}
