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Connection.cpp
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450 lines (349 loc) · 7.69 KB
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#include "Connection.hpp"
#include <cmath>
#include <utility>
#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;
using QtNodes::TypeConverter;
Connection::
Connection(PortType portType,
Node& node,
PortIndex portIndex)
: _uid(QUuid::createUuid())
, _outPortIndex(INVALID)
, _inPortIndex(INVALID)
, _connectionState()
{
setNodeToPort(node, portType, portIndex);
setRequiredPort(oppositePort(portType));
}
Connection::
Connection(Node& nodeIn,
PortIndex portIndexIn,
Node& nodeOut,
PortIndex portIndexOut,
TypeConverter typeConverter)
: _uid(QUuid::createUuid())
, _outNode(&nodeOut)
, _inNode(&nodeIn)
, _outPortIndex(portIndexOut)
, _inPortIndex(portIndexIn)
, _connectionState()
, _converter(std::move(typeConverter))
{
setNodeToPort(nodeIn, PortType::In, portIndexIn);
setNodeToPort(nodeOut, PortType::Out, portIndexOut);
}
Connection::
~Connection()
{
if (complete())
{
connectionMadeIncomplete(*this);
}
if (_inNode)
{
_inNode->nodeGraphicsObject().update();
}
if (_outNode)
{
propagateEmptyData();
_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;
if (_converter)
{
auto getTypeJson = [this](PortType type)
{
QJsonObject typeJson;
NodeDataType nodeType = this->dataType(type);
typeJson["id"] = nodeType.id;
typeJson["name"] = nodeType.name;
return typeJson;
};
QJsonObject converterTypeJson;
converterTypeJson["in"] = getTypeJson(PortType::In);
converterTypeJson["out"] = getTypeJson(PortType::Out);
connectionJson["converter"] = converterTypeJson;
}
}
return connectionJson;
}
QUuid
Connection::
id() const
{
return _uid;
}
bool
Connection::
complete() const
{
return _inNode != nullptr && _outNode != nullptr;
}
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)
{
bool wasIncomplete = !complete();
auto& nodeWeak = getNode(portType);
nodeWeak = &node;
if (portType == PortType::Out)
_outPortIndex = portIndex;
else
_inPortIndex = portIndex;
_connectionState.setNoRequiredPort();
updated(*this);
if (complete() && wasIncomplete) {
connectionCompleted(*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)
{
if (complete())
{
connectionMadeIncomplete(*this);
}
getNode(portType) = nullptr;
if (portType == PortType::In)
_inPortIndex = INVALID;
else
_outPortIndex = INVALID;
}
NodeDataType
Connection::
dataType(PortType portType) const
{
if (_inNode && _outNode)
{
auto const & model = (portType == PortType::In) ?
_inNode->nodeDataModel() :
_outNode->nodeDataModel();
PortIndex index = (portType == PortType::In) ?
_inPortIndex :
_outPortIndex;
return model->dataType(portType, index);
}
else
{
Node* validNode;
PortIndex index = INVALID;
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::
setTypeConverter(TypeConverter converter)
{
_converter = std::move(converter);
}
void
Connection::
propagateData(std::shared_ptr<NodeData> nodeData) const
{
if (_inNode)
{
if (_converter)
{
nodeData = _converter(nodeData);
}
_inNode->propagateData(nodeData, _inPortIndex, id());
}
}
void
Connection::
propagateEmptyData() const
{
std::shared_ptr<NodeData> emptyData;
propagateData(emptyData);
}