C++ QWidgetList::push_back方法代码示例

QWidgetList OrderDialog::pagesOfContainer(const QDesignerFormEditorInterface *core, QWidget *container)
{
    QWidgetList rc;
    if (QDesignerContainerExtension* ce = qt_extension<QDesignerContainerExtension*>(core->extensionManager(), container)) {
        const int count = ce->count();
        for (int i = 0; i < count ;i ++)
            rc.push_back(ce->widget(i));
    }
    return rc;
}

Qt::DropAction QDesignerMimeData::execDrag(const QDesignerDnDItems &items, QWidget * dragSource)
{
    if (items.empty())
        return Qt::IgnoreAction;

    QDrag *drag = new QDrag(dragSource);
    QDesignerMimeData *mimeData = new QDesignerMimeData(items, drag);

    // Store pointers to widgets that are to be re-shown if a move operation is canceled
    QWidgetList reshowWidgets;
    const QDesignerDnDItems::const_iterator cend = items.constEnd();
    for (QDesignerDnDItems::const_iterator it = items.constBegin(); it != cend; ++it )
        if (QWidget *w = (*it)->widget())
            if ((*it)->type() ==  QDesignerDnDItemInterface::MoveDrop)
                reshowWidgets.push_back(w);

    const Qt::DropAction executedAction = drag->exec(Qt::CopyAction|Qt::MoveAction, mimeData->proposedDropAction());

    if (executedAction == Qt::IgnoreAction && !reshowWidgets.empty())
        foreach (QWidget *w, reshowWidgets)
            w->show();

    return executedAction;
}

///
///returns a widget
///it supports repeated widget names
///
QWidget* getAbsoluteWidget(QStringList path)
{
    _log::misc << "(QWidgetUtils::getAbsoluteWidget)" << std::endl;
    ///update the view
    QWidgetUtils::updateAppView();

    ///get all the widgets
    QWidgetList qwl = qApp->allWidgets();

    ///get the widget name
    assert ( path.size() );
    QString name = path.back();
    if ( name == "" )
    {
        std::cout << "(QWidgetUtils::getAbsoluteWidget) ERROR. The name of the widget is empty." << std::endl;
        return NULL;
    }
    path.pop_back();

    //_log::misc << "(QWidgetUtils::getAbsoluteWidget) Name = " << name.toStdString() << std::endl;


    ///get all widgets with this name
    QWidgetList qws;
    foreach ( QWidget *w, qwl )
    {
        if ( getWidgetName ( w ) == name )
        {
            qws.push_back ( w );
        }
    }
    //_log::misc << "(QWidgetUtils::getAbsoluteWidget) OK" << std::endl;
    //if there are no selected widgets...
    if ( qws.size() == 0 )
    {
        _log::misc << "(QWidgetUtils::getAbsoluteWidget) ERROR. There are no selected widgets." << std::endl;
        return NULL;
    }
    //_log::misc << "(QWidgetUtils::getAbsoluteWidget) OK" << std::endl;

    ///get the concrete widget we are looking for...
    int level = 1;
    bool onTopLevel = false;
    int onTopLevelCount = 0;
    QWidgetList::iterator qit;

    /*for (qit = qws.begin(); qit != qws.end(); qit++)
      {
      QWidget* w = static_cast<QWidget*> ( *qit );
      _log::misc << getWidgetPath(w).toStdString() << std::endl;
      }*/

    // while more than 1 widget remaining
    // or every widget has been analyzed...
    while ( qws.size() > 1 && onTopLevelCount < qws.size() )
    {

        //_log::misc << "(QWidgetUtils::getAbsoluteWidget) OK -> " << qws.size() << std::endl;
        //for the remaining widgets...
        qit = qws.begin();
        while ( qit != qws.end() )
        {
            //get the parent widget
            QWidget* w = static_cast<QWidget*> ( *qit );
            QWidget* wParent = w;
            assert ( wParent );
            onTopLevel = false;

            for ( int i = 0; i < level; i++ )
            {
                //if we are in a top level widget (with no parent node)
                //we have to avoid this widget
                if ( wParent->parent() == NULL )
                {
                    onTopLevel = true;
                    onTopLevelCount++;
                    break;
                }
                //if not, we go on looking for up
                else
                {
                    wParent = static_cast<QWidget*> ( wParent->parent() );
                }
            }

            //if not at top level...
            if ( !onTopLevel )
            {
                //we chech the parent name and delete the
                //widgets whose parent name does not mach
                if ( getWidgetName ( wParent ) != path.back() )
                {
                    qit = qws.erase ( qit );
                }
                else
                {
//.........这里部分代码省略.........