Method checkFileModificationAndWarnInternal

Gui/KnobGuiFile.cpp:241–299

}

bool
KnobGuiFile::checkFileModificationAndWarnInternal(bool doCheck,
                                                  SequenceTime time,
                                                  bool errorAndAbortRender)
{
    bool useNotifications = appPTR->getCurrentSettings()->notifyOnFileChange();

    if (!useNotifications) {
        return false;
    }
    boost::shared_ptr<KnobFile> knob = _knob.lock();
    if (!knob) {
        return false;
    }
    EffectInstance* effect = dynamic_cast<EffectInstance*>( knob->getHolder() );
    assert(effect);
    if ( !effect || !effect->getNode()->isActivated() ) {
        return false;
    }

    ///Get the current file, if it exists, add the file path to the file system watcher
    ///to get notified if the file changes.
    std::string filepath = knob->getFileName( time, knob->getCurrentView() );
    if ( !filepath.empty() && knob->getHolder() && knob->getHolder()->getApp() ) {
        knob->getHolder()->getApp()->getProject()->canonicalizePath(filepath);
    }

    QString qfilePath = QString::fromUtf8( filepath.c_str() );
    if ( !QFile::exists(qfilePath) ) {
        return false;
    }

    QDateTime date;
    std::map<std::string, QDateTime>::iterator foundModificationDate = _lastModificationDates.find(filepath);
    QFileInfo info(qfilePath);
    date = info.lastModified();

    //We already have a modification date
    bool ret = false;
    if ( foundModificationDate != _lastModificationDates.end() ) {
        if ( doCheck && (date != foundModificationDate->second) ) {
            if (errorAndAbortRender) {
                QString warn = tr("The file \"%1\" has changed on disk.\n"
                                  "Press reload file to load the new version of the file").arg(qfilePath);
                effect->setPersistentMessage( eMessageTypeError, warn.toStdString() );
                effect->abortAnyEvaluation();
            }
            effect->purgeCaches();
            effect->getNode()->removeAllImagesFromCache(true);
            _lastModificationDates.clear();
            ret = true;
        } else {
            return false;
        }
    }
    _lastModificationDates.insert( std::make_pair(filepath, date) );

    return ret;