nodeeditor/src/ConnectionPainter.cpp at hahaton · DigitalPulseSoftware/nodeeditor · GitHub

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#include "ConnectionPainter.hpp"

//#define DEBUG_DRAWING 1

#include "ConnectionGeometry.hpp"

#include "ConnectionState.hpp"

#include "ConnectionGraphicsObject.hpp"

#include "Connection.hpp"

#include "NodeData.hpp"

#include "StyleCollection.hpp"

using QtNodes::ConnectionPainter;

using QtNodes::ConnectionGeometry;

using QtNodes::Connection;

ConnectionPainter::

ConnectionPainter()

{}

QPainterPath

ConnectionPainter::

cubicPath(ConnectionGeometry const& geom)

{

QPointF const& source = geom.source();

QPointF const& sink = geom.sink();

auto c1c2 = geom.pointsC1C2();

// cubic spline

QPainterPath cubic(source);

cubic.cubicTo(c1c2.first, c1c2.second, sink);

return cubic;

}

QPainterPath

ConnectionPainter::

getPainterStroke(ConnectionGeometry const& geom)

{

auto cubic = cubicPath(geom);

QPointF const& source = geom.source();

QPainterPath result(source);

unsigned segments = 20;

for (auto i = 0ul; i < segments; ++i)

{

double ratio = double(i + 1) / segments;

result.lineTo(cubic.pointAtPercent(ratio));

}

QPainterPathStroker stroker; stroker.setWidth(10.0);

return stroker.createStroke(result);

}

#include <limits>

#include <QDebug>

void

ConnectionPainter::

paint(QPainter* painter,

Connection const &connection)

{

auto const &connectionStyle =

StyleCollection::connectionStyle();

QColor normalColor = connectionStyle.normalColor();

QColor hoverColor = connectionStyle.hoveredColor();

QColor selectedColor = connectionStyle.selectedColor();

auto dataType = connection.dataType();

if (connectionStyle.useDataDefinedColors())

{

normalColor = connectionStyle.normalColor(dataType.id);

hoverColor = normalColor.lighter(200);

selectedColor = normalColor.darker(200);

}

ConnectionGeometry const& geom =

connection.connectionGeometry();

ConnectionState const& state =

connection.connectionState();

double const lineWidth = connectionStyle.lineWidth();

double const pointDiameter = connectionStyle.pointDiameter();

#ifdef DEBUG_DRAWING

{

QPointF const& source = geom.source();

QPointF const& sink = geom.sink();

auto points = geom.pointsC1C2();

painter->setPen(Qt::red);

painter->setBrush(Qt::red);

painter->drawLine(QLineF(source, points.first));

painter->drawLine(QLineF(points.first, points.second));

painter->drawLine(QLineF(points.second, sink));

painter->drawEllipse(points.first, 3, 3);

painter->drawEllipse(points.second, 3, 3);

painter->setBrush(Qt::NoBrush);

painter->drawPath(cubicPath(geom));

}

{

painter->setPen(Qt::yellow);

painter->drawRect(geom.boundingRect());

}

#endif

auto cubic = cubicPath(geom);

bool const hovered = geom.hovered();

auto const& graphicsObject =

connection.getConnectionGraphicsObject();

bool const selected = graphicsObject.isSelected();

if (hovered || selected)

{

QPen p;

p.setWidth(2 * lineWidth);

p.setColor(selected ?

connectionStyle.selectedHaloColor() :

hoverColor);

painter->setPen(p);

painter->setBrush(Qt::NoBrush);

// cubic spline

painter->drawPath(cubic);

}

// draw normal line

{

QPen p;

p.setWidth(lineWidth);

if (selected)

p.setColor(selectedColor);

else

p.setColor(normalColor);

if (state.requiresPort())

{

p.setWidth(connectionStyle.constructionLineWidth());

p.setColor(connectionStyle.constructionColor());

p.setStyle(Qt::DashLine);

}

painter->setPen(p);

painter->setBrush(Qt::NoBrush);

// cubic spline

painter->drawPath(cubic);

}

QPointF const& source = geom.source();

QPointF const& sink = geom.sink();

painter->setPen(connectionStyle.constructionColor());

painter->setBrush(connectionStyle.constructionColor());

double const pointRadius = pointDiameter / 2.0;

painter->drawEllipse(source, pointRadius, pointRadius);

painter->drawEllipse(sink, pointRadius, pointRadius);

}

nodeeditor/src/ConnectionPainter.cpp at hahaton · DigitalPulseSoftware/nodeeditor · GitHub

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