Exemplos de QGraphicsWidget::boundingRect em C++ (Cpp)

Exemplo n.º 1

bool ImageStripScene::setCurrentDirectory(const QString& path)
{
    QMutexLocker locker(&m_mutex);
    QDir         directory(path);
    QImageReader reader;
    
    if(directory.exists()) {
        clear();
        
        if(m_loader) {
            m_loader->disconnect(this);
            m_loader->stopExecution();
            
            if(!m_loader->wait(500)) {
                m_loader->terminate();
                m_loader->wait();
            }
        }
        
        delete m_loader;
        
        m_numItems = 0;
        m_loader   = new ImageLoader(m_imgSize);
        connect(m_loader, SIGNAL(sigItemContentChanged(ImageItem*)), SLOT(slotItemContentChanged(ImageItem*)));
        
        QStringList            files  = directory.entryList(QDir::Files);
        QGraphicsLinearLayout* layout = new QGraphicsLinearLayout();
        
        for(QStringList::iterator name=files.begin(); name!=files.end(); ++name) {
            QString path = directory.absoluteFilePath(*name);
            reader.setFileName(path);
            
            if(reader.canRead()) {
                ImageItem* item = new ImageItem(m_imgSize, path, m_loader);
                m_loader->addPath(item, path);
                layout->addItem(item);
                ++m_numItems;
            }
        }
        
        QGraphicsWidget* widget = new QGraphicsWidget();
        widget->setLayout(layout);
        widget->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
        
        addItem(widget);
        setSceneRect(widget->boundingRect());
        
        m_loader->start(QThread::LowPriority);
        return true;
    }
    
    return false;
}