Function handleConnectionError

Gui/NodeGraph15.cpp:60–121

NATRON_NAMESPACE_ENTER
static bool
handleConnectionError(const NodeGuiPtr& outputNode,
                      const NodeGuiPtr& inputNode,
                      int inputNb)
{
    Node::CanConnectInputReturnValue linkRetCode = outputNode->getNode()->canConnectInput(inputNode->getNode(), inputNb);

    if ( (linkRetCode != Node::eCanConnectInput_ok) && (linkRetCode != Node::eCanConnectInput_inputAlreadyConnected) ) {
        if (linkRetCode == Node::eCanConnectInput_differentPars) {
            QString error = QCoreApplication::translate("NodeGraph", "%1 and %2 do not have the same pixel aspect ratio (%3 vs. %4), and %1 does not support inputs with different pixel aspect ratio.\n"
                                                        "This might yield unwanted results.")
                            .arg( QString::fromUtf8( outputNode->getNode()->getLabel().c_str() ) )
                            .arg( QString::fromUtf8( inputNode->getNode()->getLabel().c_str() ) )
                            .arg( outputNode->getNode()->getEffectInstance()->getAspectRatio(-1) )
                            .arg( inputNode->getNode()->getEffectInstance()->getAspectRatio(-1) );
            Dialogs::warningDialog( QCoreApplication::translate("NodeGraph", "Different pixel aspect").toStdString(),
                                    error.toStdString() );

            return true;
        } else if (linkRetCode == Node::eCanConnectInput_differentFPS) {
            QString error = QCoreApplication::translate("NodeGraph", "%1 and %2 do not have the same frame rate (%3 vs. %4).\n"
                                                        "This might yield unwanted results.\n"
                                                        "Either change the FPS from the Read node parameters or change the settings of the project.")
                            .arg( QString::fromUtf8( outputNode->getNode()->getLabel().c_str() ) )
                            .arg( QString::fromUtf8( inputNode->getNode()->getLabel().c_str() ) )
                            .arg( outputNode->getNode()->getEffectInstance()->getFrameRate() )
                            .arg( inputNode->getNode()->getEffectInstance()->getFrameRate() );
            Dialogs::warningDialog( QCoreApplication::translate("NodeGraph", "Different frame rate").toStdString(),
                                    error.toStdString() );

            return true;
        } else if (linkRetCode == Node::eCanConnectInput_groupHasNoOutput) {
            QString error = QCoreApplication::translate("NodeGraph", "You cannot connect %1 to %2, because it is a group which does not have an Output node.")
                            .arg( QString::fromUtf8( outputNode->getNode()->getLabel().c_str() ) )
                            .arg( QString::fromUtf8( inputNode->getNode()->getLabel().c_str() ) );
            Dialogs::errorDialog( QCoreApplication::translate("NodeGraph", "Different frame rate").toStdString(),
                                  error.toStdString() );
        } else if (linkRetCode == Node::eCanConnectInput_multiResNotSupported) {
            QString error = QCoreApplication::translate("NodeGraph", "You cannot connect %1 to %2 because multi-resolution is not supported on %1, "
                                                        "which means that it cannot receive images with a lower left corner different than (0,0) and cannot have "
                                                        "multiple inputs/outputs with different image sizes.\n"
                                                        "To overcome this, use a Resize or Crop node upstream to change the image size. In some cases you might also need to make sure the input image size is the project size.").arg( QString::fromUtf8( outputNode->getNode()->getLabel().c_str() ) )
                            .arg( QString::fromUtf8( inputNode->getNode()->getLabel().c_str() ) );
            Dialogs::errorDialog( QCoreApplication::translate("NodeGraph", "Multi-resolution not supported").toStdString(),
                                  error.toStdString() );;
        }

        return false;
    }

    if ( (linkRetCode == Node::eCanConnectInput_ok) && outputNode->getNode()->getEffectInstance()->isReader() &&
         ( inputNode->getNode()->getPluginID() != PLUGINID_OFX_RUNSCRIPT) ) {
        Dialogs::warningDialog( QCoreApplication::translate("NodeGraph", "Reader input").toStdString(),
                                QCoreApplication::translate("NodeGraph", "Connecting an input to a Reader node "
                                                            "is only useful when using the RunScript node "
                                                            "so that the Reader automatically reads an image "
                                                            "when the render of the RunScript is done.").toStdString() );