Method replaceInputInternal

Engine/NodeInputs.cpp:854–940

}

bool
Node::replaceInputInternal(const NodePtr& input, int inputNumber, bool useGuiInputs)
{
    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() ) {
        CanConnectInputReturnValue ret = checkCanConnectNoMultiRes(this, input);
        if (ret != eCanConnectInput_ok) {
            return false;
        }
    }

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

    {
        QMutexLocker l(&_imp->inputsMutex);
        ///Set the input

        if (!useGuiInputs) {
            NodePtr curIn = _imp->inputs[inputNumber].lock();
            if (curIn) {
                QObject::connect( curIn.get(), SIGNAL(labelChanged(QString)), this, SLOT(onInputLabelChanged(QString)) );
                curIn->disconnectOutput(useGuiInputs, this);
            }
            _imp->inputs[inputNumber] = input;
            _imp->guiInputs[inputNumber] = input;
        } else {
            NodePtr curIn = _imp->guiInputs[inputNumber].lock();
            if (curIn) {
                QObject::connect( curIn.get(), SIGNAL(labelChanged(QString)), this, SLOT(onInputLabelChanged(QString)) );
                curIn->disconnectOutput(useGuiInputs, this);
            }
            _imp->guiInputs[inputNumber] = input;
        }
        input->connectOutput( useGuiInputs, shared_from_this() );
    }

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