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

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#include "Connection.hpp"

#include <iostream>

#include <math.h>

#include <QtWidgets/QtWidgets>

#include <QtGlobal>

#include "Node.hpp"

#include "FlowScene.hpp"

#include "FlowView.hpp"

#include "NodeGeometry.hpp"

#include "NodeGraphicsObject.hpp"

#include "NodeDataModel.hpp"

#include "ConnectionState.hpp"

#include "ConnectionGeometry.hpp"

#include "ConnectionGraphicsObject.hpp"

using QtNodes::Connection;

using QtNodes::PortType;

using QtNodes::PortIndex;

using QtNodes::ConnectionState;

using QtNodes::Node;

using QtNodes::NodeData;

using QtNodes::NodeDataType;

using QtNodes::ConnectionGraphicsObject;

using QtNodes::ConnectionGeometry;

Connection::

Connection(PortType portType,

Node& node,

PortIndex portIndex)

: _id(QUuid::createUuid())

, _outPortIndex(INVALID)

, _inPortIndex(INVALID)

, _connectionState()

{

setNodeToPort(node, portType, portIndex);

setRequiredPort(oppositePort(portType));

}

Connection::

Connection(Node& nodeIn,

PortIndex portIndexIn,

Node& nodeOut,

PortIndex portIndexOut)

: _id(QUuid::createUuid())

, _outNode(&nodeOut)

, _inNode(&nodeIn)

, _outPortIndex(portIndexOut)

, _inPortIndex(portIndexIn)

, _connectionState()

{

setNodeToPort(nodeIn, PortType::In, portIndexIn);

setNodeToPort(nodeOut, PortType::Out, portIndexOut);

}

Connection::

~Connection()

{

propagateEmptyData();

if (_inNode)

{

_inNode->nodeGraphicsObject().update();

}

if (_outNode)

{

_outNode->nodeGraphicsObject().update();

}

QJsonObject

Connection::

save() const

{

QJsonObject connectionJson;

if (_inNode && _outNode)

{

connectionJson["in_id"] = _inNode->id().toString();

connectionJson["in_index"] = _inPortIndex;

connectionJson["out_id"] = _outNode->id().toString();

connectionJson["out_index"] = _outPortIndex;

}

return connectionJson;

}

QUuid

Connection::

id() const

{

return _id;

}

void

Connection::

setRequiredPort(PortType dragging)

{

_connectionState.setRequiredPort(dragging);

switch (dragging)

{

case PortType::Out:

_outNode = nullptr;

_outPortIndex = INVALID;

break;

case PortType::In:

_inNode = nullptr;

_inPortIndex = INVALID;

break;

default:

break;

}

PortType

Connection::

requiredPort() const

{

return _connectionState.requiredPort();

}

void

Connection::

setGraphicsObject(std::unique_ptr<ConnectionGraphicsObject>&& graphics)

{

_connectionGraphicsObject = std::move(graphics);

// This function is only called when the ConnectionGraphicsObject

// is newly created. At this moment both end coordinates are (0, 0)

// in Connection G.O. coordinates. The position of the whole

// Connection G. O. in scene coordinate system is also (0, 0).

// By moving the whole object to the Node Port position

// we position both connection ends correctly.

if (requiredPort() != PortType::None)

{

PortType attachedPort = oppositePort(requiredPort());

PortIndex attachedPortIndex = getPortIndex(attachedPort);

auto node = getNode(attachedPort);

QTransform nodeSceneTransform =

node->nodeGraphicsObject().sceneTransform();

QPointF pos = node->nodeGeometry().portScenePosition(attachedPortIndex,

attachedPort,

nodeSceneTransform);

_connectionGraphicsObject->setPos(pos);

}

_connectionGraphicsObject->move();

}

PortIndex

Connection::

getPortIndex(PortType portType) const

{

PortIndex result = INVALID;

switch (portType)

{

case PortType::In:

result = _inPortIndex;

break;

case PortType::Out:

result = _outPortIndex;

break;

default:

break;

}

return result;

}

void

Connection::

setNodeToPort(Node& node,

PortType portType,

PortIndex portIndex)

{

auto& nodeWeak = getNode(portType);

nodeWeak = &node;

if (portType == PortType::Out)

_outPortIndex = portIndex;

else

_inPortIndex = portIndex;

_connectionState.setNoRequiredPort();

updated(*this);

}

void

Connection::

removeFromNodes() const

{

if (_inNode)

_inNode->nodeState().eraseConnection(PortType::In, _inPortIndex, id());

if (_outNode)

_outNode->nodeState().eraseConnection(PortType::Out, _outPortIndex, id());

}

ConnectionGraphicsObject&

Connection::

getConnectionGraphicsObject() const

{

return *_connectionGraphicsObject;

}

ConnectionState&

Connection::

connectionState()

{

return _connectionState;

}

ConnectionState const&

Connection::

connectionState() const

{

return _connectionState;

}

ConnectionGeometry&

Connection::

connectionGeometry()

{

return _connectionGeometry;

}

ConnectionGeometry const&

Connection::

connectionGeometry() const

{

return _connectionGeometry;

}

Node*

Connection::

getNode(PortType portType) const

{

switch (portType)

{

case PortType::In:

return _inNode;

break;

case PortType::Out:

return _outNode;

break;

default:

// not possible

break;

}

return nullptr;

}

Node*&

Connection::

getNode(PortType portType)

{

switch (portType)

{

case PortType::In:

return _inNode;

break;

case PortType::Out:

return _outNode;

break;

default:

// not possible

break;

}

Q_UNREACHABLE();

}

void

Connection::

clearNode(PortType portType)

{

getNode(portType) = nullptr;

if (portType == PortType::In)

_inPortIndex = INVALID;

else

_outPortIndex = INVALID;

}

NodeDataType

Connection::

dataType() const

{

Node* validNode;

PortIndex index = INVALID;

PortType portType = PortType::None;

if ((validNode = _inNode))

{

index = _inPortIndex;

portType = PortType::In;

}

else if ((validNode = _outNode))

{

index = _outPortIndex;

portType = PortType::Out;

}

if (validNode)

{

auto const &model = validNode->nodeDataModel();

return model->dataType(portType, index);

}

Q_UNREACHABLE();

}

void

Connection::

propagateData(std::shared_ptr<NodeData> nodeData) const

{

if (_inNode)

{

_inNode->propagateData(nodeData, _inPortIndex);

}

void

Connection::

propagateEmptyData() const

{

std::shared_ptr<NodeData> emptyData;

propagateData(emptyData);

}

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

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