C++ QSortFilterProxyModel::setSortLocaleAware方法代码示例

  EngineListView::EngineListView( GLWidget *glWidget, QWidget *parent ) : QListView(parent), d(new EngineListViewPrivate)
  {
    d->glWidget = glWidget;

    EngineItemModel *m = new EngineItemModel(d->glWidget, this);

    if(model())
    {
      delete model();
    }

		// This should sort the engine names for user views
		// It should also update dynamically as people edit names
		// Somehow it doesn't work right from the start!
		QSortFilterProxyModel *sortModel = new QSortFilterProxyModel(this);
		sortModel->setSourceModel(m);
    setModel(sortModel);
		sortModel->setSortCaseSensitivity(Qt::CaseInsensitive);
		sortModel->setSortLocaleAware(true);
		sortModel->setDynamicSortFilter(true);
		sortModel->sort(0, Qt::AscendingOrder);
		
    connect(this, SIGNAL(clicked(QModelIndex)),
        this, SLOT(selectEngine(QModelIndex)));
		// This might work for having the proxy model emit the signal, but let's keep it as-is
    connect(m, SIGNAL(dataChanged(QModelIndex, QModelIndex)),
        glWidget, SLOT(update()));
        
    // improves display performance
    setUniformItemSizes(true);
    setAlternatingRowColors(true); // looks better
  }

  QUndoCommand* PropertiesExtension::performAction(QAction *action,
                                                   GLWidget *widget)
  {
    QUndoCommand *undo = 0;
    PropertiesModel *model;
    PropertiesView  *view;
    QDialog *dialog = new QDialog(qobject_cast<QWidget *>(parent()));
    QVBoxLayout *layout = new QVBoxLayout(dialog);
    dialog->setLayout(layout);
    // Don't show whitespace around the PropertiesView
    layout->setSpacing(0);
    layout->setContentsMargins(0,0,0,0);

    int i = action->data().toInt();
    switch (i) {
    case AtomPropIndex: // atom properties
      // model will be deleted in PropertiesView::hideEvent using deleteLater().
      model = new PropertiesModel(PropertiesModel::AtomType);
      model->setMolecule(m_molecule);
      // view will delete itself in PropertiesView::hideEvent using deleteLater().
      view = new PropertiesView(PropertiesView::AtomType, dialog);
      connect(m_molecule, SIGNAL( atomAdded(Atom*) ),
              model, SLOT( atomAdded(Atom*) ));
      connect(m_molecule, SIGNAL( atomRemoved(Atom*) ),
              model, SLOT( atomRemoved(Atom*) ));
      break;
    case BondPropIndex: // bond properties
      // model will be deleted in PropertiesView::hideEvent using deleteLater().
      model = new PropertiesModel(PropertiesModel::BondType);
      model->setMolecule( m_molecule );
      // view will delete itself in PropertiesView::hideEvent using deleteLater().
      view = new PropertiesView(PropertiesView::BondType, widget);
      connect(m_molecule, SIGNAL( bondAdded(Bond*) ),
              model, SLOT( bondAdded(Bond*) ));
      connect(m_molecule, SIGNAL( bondRemoved(Bond*) ),
              model, SLOT( bondRemoved(Bond*) ));
      break;
    case AnglePropIndex: // angle properties
      // model will be deleted in PropertiesView::hideEvent using deleteLater().
      model = new PropertiesModel(PropertiesModel::AngleType);
      model->setMolecule( m_molecule );
      // view will delete itself in PropertiesView::hideEvent using deleteLater().
      view = new PropertiesView(PropertiesView::AngleType, widget);
      break;
    case TorsionPropIndex: // torsion properties
      // model will be deleted in PropertiesView::hideEvent using deleteLater().
      model = new PropertiesModel(PropertiesModel::TorsionType);
      model->setMolecule( m_molecule );
      // view will delete itself in PropertiesView::hideEvent using deleteLater().
      view = new PropertiesView(PropertiesView::TorsionType, widget);
      break;
    /*case CartesianIndex: // cartesian editor
      // m_angleModel will be deleted in PropertiesView::hideEvent using deleteLater().
      model = new PropertiesModel(PropertiesModel::CartesianType);
      model->setMolecule( m_molecule );
      // m_view will delete itself in PropertiesView::hideEvent using deleteLater().
      view = new PropertiesView(PropertiesView::CartesianType, widget);
      connect(m_molecule, SIGNAL(atomAdded(Atom*)), model, SLOT( atomAdded(Atom*)));
      connect(m_molecule, SIGNAL(atomRemoved(Atom*)), model, SLOT(atomRemoved(Atom*)));
      break;*/
    case ConformerIndex: // conformers
      // model will be deleted in PropertiesView::hideEvent using deleteLater().
      model = new PropertiesModel(PropertiesModel::ConformerType, dialog);
      model->setMolecule( m_molecule );
      // view will delete itself in PropertiesView::hideEvent using deleteLater().
      view = new PropertiesView(PropertiesView::ConformerType, dialog);
      break;
    default:
      delete dialog;
      layout = 0; // deleted as a child of the dialog
      return 0;
    }

    connect(m_molecule, SIGNAL(moleculeChanged()), model, SLOT(moleculeChanged()));
    connect(m_molecule, SIGNAL( updated() ), model, SLOT( updateTable() ));

    QSortFilterProxyModel* proxyModel = new QSortFilterProxyModel(this);
    proxyModel->setSourceModel(model);
    proxyModel->setDynamicSortFilter(true);
    proxyModel->setSortLocaleAware(true);
    // this role will received direct floating-point numbers from the model
    proxyModel->setSortRole(Qt::UserRole);

    view->setMolecule( m_molecule );
    view->setWidget( widget );
    view->setModel( proxyModel );
    view->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOff);
    view->resizeColumnsToContents();
    layout->addWidget(view);
    dialog->setWindowTitle(view->windowTitle());
    QSize dialogSize = dialog->size();
    double width = view->horizontalHeader()->length()+view->verticalHeader()->width()+5;
	if (model->rowCount() < 10) { // no scrollbar
	  dialogSize.setHeight(view->horizontalHeader()->height()+model->rowCount()*30+5);
      dialogSize.setWidth(width);
    } else { // scrollbar is needed
      dialogSize.setHeight(width/1.618);
      dialogSize.setWidth(width+view->verticalScrollBar()->width());
    }
    dialog->resize(dialogSize);
//.........这里部分代码省略.........