Saving / Loading Files

[yeye_olive]

To answer your first question, I think you are abusing XML by filling it with base64-encoded gobbledygook. Either use XML with a human-readable format or switch to a binary format altogether.

About your second question. Have a look at http://www.qtcentre.org/wiki/index.p...GUI_Responsive to review your options. If you end up choosing the worker thread route, you will face Qt's not-so-up-to-date documentation on the subject. Many threads on this forum deal with the problem of communication between threads so you could start from here.

[nightroad]

Hello there,
thanks for advice, I changed my approach so i'm keeping shapes into a binary files like that QVector< QVector< Shape *> > i'm serializing as like that. ContentManager is a QThread class.

bool ContentManager::load(const QString &fileName)
{
    s_mutex.lock();
    m_shapesFile->setFileName("c:/shapes.txt");
    if (!m_shapesFile->open( QIODevice::ReadOnly )) {
        return false;
    }
 
    QDataStream dsFile( m_shapesFile );
    int boardCount;
    int shapeCount;
    int type;
    dsFile >> sceneCount;
    for (int i = 0; i < sceneCount; ++i)
    {
        dsFile >> shapeCount;
        for (int j = 0; j < shapeCount; ++j)
        {
            dsFile >> type;
            Shape *_s = new StrokeItem(); // TEST 
            dsFile >> _s; // TEST
            delete _s; // TEST
        }
    }
    qDebug() << "done";
    m_shapesFile->close()
    s_mutex.unlock();
    return true;
}

bool ContentManager::load(const QString &fileName)
{
    s_mutex.lock();
    m_shapesFile->setFileName("c:/shapes.txt");
    if (!m_shapesFile->open( QIODevice::ReadOnly )) {
        return false;
    }

    QDataStream dsFile( m_shapesFile );
    int boardCount;
    int shapeCount;
    int type;
    dsFile >> sceneCount;
    for (int i = 0; i < sceneCount; ++i)
    {
        dsFile >> shapeCount;
        for (int j = 0; j < shapeCount; ++j)
        {
            dsFile >> type;
            Shape *_s = new StrokeItem(); // TEST 
            dsFile >> _s; // TEST
            delete _s; // TEST
        }
    }
    qDebug() << "done";
    m_shapesFile->close()
    s_mutex.unlock();
    return true;
}

To copy to clipboard, switch view to plain text mode 

Thus, I can read whole file correct as like that. So this is the question. What i must to do in TEST step. I can send binary data through signal to GUI thread and then de-serialize that QDataStream and then add that item into Scene or i can create new Shape *_s = new ... then Sending through that item into GUI thread then directl i can add this item into scene , What do you suggest for that, or do you have another an idea ?