Method connectInput

Engine/NodeInputs.cpp:751–834

} // Node::canConnectInput

bool
Node::connectInput(const NodePtr & input,
                   int inputNumber)
{
    assert(_imp->inputsInitialized);
    assert(input);

    ///Check for cycles: they are forbidden in the graph
    if ( !checkIfConnectingInputIsOk( input.get() ) ) {
        return false;
    }
    if ( _imp->effect->isInputRotoBrush(inputNumber) ) {
        qDebug() << "Debug: Attempt to connect " << input->getScriptName_mt_safe().c_str() << " to Roto brush";

        return false;
    }

    ///For effects that do not support multi-resolution, make sure the input effect is correct
    ///otherwise the rendering might crash
    if ( !_imp->effect->supportsMultiResolution() && !getApp()->getProject()->isLoadingProject() ) {
        CanConnectInputReturnValue ret = checkCanConnectNoMultiRes(this, input);
        if (ret != eCanConnectInput_ok) {
            return false;
        }
    }

    bool useGuiInputs = isNodeRendering();
    _imp->effect->abortAnyEvaluation();

    {
        ///Check for invalid index
        QMutexLocker l(&_imp->inputsMutex);
        if ( (inputNumber < 0) ||
             ( inputNumber >= (int)_imp->inputs.size() ) ||
             ( !useGuiInputs && _imp->inputs[inputNumber].lock() ) ||
             ( useGuiInputs && _imp->guiInputs[inputNumber].lock() ) ) {
            return false;
        }

        ///Set the input
        if (!useGuiInputs) {
            _imp->inputs[inputNumber] = input;
            _imp->guiInputs[inputNumber] = input;
        } else {
            _imp->guiInputs[inputNumber] = input;
        }
        input->connectOutput( useGuiInputs, shared_from_this() );
    }

    getApp()->recheckInvalidExpressions();

    ///Get notified when the input name has changed
    QObject::connect( input.get(), SIGNAL(labelChanged(QString)), this, SLOT(onInputLabelChanged(QString)) );

    ///Notify the GUI
    Q_EMIT inputChanged(inputNumber);
    bool mustCallEnd = false;