C++ QTableView::resizeRowsToContents方法代码示例

/*!
    Create and return the table used to visualize digital signals.
*/
QTableView* UiDigitalGenerator::createTable()
{
    // Deallocation: "Qt Object trees" (See UiMainWindow)
    QTableView* table = new QTableView(this);

    QItemSelectionModel* m = table->selectionModel();
    if (m != NULL) delete m;
    table->setModel(mSignals);

    // Deallocation: "Qt Object trees" (See UiMainWindow)
    DigitalDelegate* delegate = new DigitalDelegate(this);
    QAbstractItemDelegate* d = table->itemDelegate();
    if (d != NULL) delete d;
    table->setItemDelegate(delegate);

    table->resizeColumnsToContents();
    table->resizeRowsToContents();

    connect(table->selectionModel(),
            SIGNAL(selectionChanged(QItemSelection,QItemSelection)),
            this,
            SLOT(handleSelectionChanged(QItemSelection,QItemSelection)));


    return table;
}

void GuiTools::ModelToView(QAbstractItemModel *model, QAbstractItemView *view)
{
    view->reset();
    view->setModel(model);

    QTableView* tableView = dynamic_cast<QTableView*>(view);
    if(tableView && model)
    {
        tableView->horizontalHeader()->setStretchLastSection(true);
        tableView->resizeColumnsToContents();
        tableView->resizeRowsToContents();

        //        // set maximum height
        //        int count = model->rowCount(QModelIndex());
        //        int h=0;
        //        for (int i = 0; i < count; i++)
        //            h += tableView->rowHeight(i);
        //        int maxH =
        //                (h +                                                      // total row height
        //                 count +                                                  // to account for the pixel(s) used in the grid
        //                 tableView->horizontalHeader()->height() +
        //                 tableView->horizontalScrollBar()->height());   // Need room for the horizontal scrollbar

        //        tableView->setMaximumHeight(maxH);
        //        tableView->resize(tableView->width(),maxH);

    }

    QTreeView* treeView = dynamic_cast<QTreeView*>(view);
    if(treeView && model)
    {
        for(int i=0;i<model->columnCount();i++)
            treeView->resizeColumnToContents(i);
        treeView->setSortingEnabled(true);
    }

    MyTreeView* myTreeView = dynamic_cast<MyTreeView*>(view);
    if(myTreeView && model)
    {
        connect(model,SIGNAL(dataChanged(const QModelIndex&,const QModelIndex&)),myTreeView,SLOT(onDataChanged(const QModelIndex&,const QModelIndex&)));
    }
}

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    //QListView view;
    QTableView view;
    view.setSortingEnabled(false);
    view.horizontalHeader()->setStretchLastSection(true);
    view.horizontalHeader()->setVisible(false);
    view.verticalHeader()->setVisible(false);

    MillionRows model(Q_NULLPTR);

    view.setModel(&model);
    view.setAlternatingRowColors(true);
    view.setStyleSheet("alternate-background-color: green;background-color: white;");
    view.setItemDelegateForColumn(0, new TableStyleDelegate());

    view.resizeRowsToContents(); // impact performance - force call sizeHint
    view.show();

    return a.exec();
}

void MainWindow::on_actShowStat_triggered()
{
  QString query = QString("call p_showStat_admin('%1', '%2', 0);")
      .arg(_model->dateA_dbformat())
      .arg(_model->dateZ_dbformat());
  qDebug() << query;
  QSqlQueryModel *m = App::theApp()->db_model(query);

  QDialog *dlgStat = new QDialog();
  dlgStat->setWindowTitle("Статистика");
  dlgStat->setGeometry(200, 200, 400, 200);

  QTableView* view = new QTableView();
  view->setModel(m);
  view->resizeColumnsToContents();
  view->resizeRowsToContents();

  QVBoxLayout* lay = new QVBoxLayout(dlgStat);
  lay->addWidget(view);

  dlgStat->exec();
}

void DkFileAssociationsPreference::createLayout() {
	
	QStringList fileFilters = Settings::param().app().openFilters;

	mModel = new QStandardItemModel(this);
	mModel->setObjectName("fileModel");
	for (int rIdx = 1; rIdx < fileFilters.size(); rIdx++)
		mModel->appendRow(getItems(fileFilters.at(rIdx), checkFilter(fileFilters.at(rIdx), Settings::param().app().browseFilters), checkFilter(fileFilters.at(rIdx), Settings::param().app().registerFilters)));

	mModel->setHeaderData(0, Qt::Horizontal, tr("Filter"));
	mModel->setHeaderData(1, Qt::Horizontal, tr("Browse"));
	mModel->setHeaderData(2, Qt::Horizontal, tr("Register"));

	QTableView* filterTableView = new QTableView(this);
	filterTableView->setModel(mModel);
	filterTableView->setSelectionBehavior(QAbstractItemView::SelectRows);
	filterTableView->verticalHeader()->hide();
	//filterTableView->horizontalHeader()->hide();
	filterTableView->setShowGrid(false);
	filterTableView->resizeColumnsToContents();
	filterTableView->resizeRowsToContents();
	filterTableView->setWordWrap(false);

	QPushButton* openDefault = new QPushButton(tr("Set as Default Viewer"), this);
	openDefault->setObjectName("openDefault");

	// now the final widgets
	QVBoxLayout* layout = new QVBoxLayout(this);
	layout->addWidget(filterTableView);

#ifdef Q_OS_WIN
	layout->addWidget(openDefault);
#else
	openDefault->hide();
#endif

}

QSortFilterProxyModel * GuiTools::ModelToViewWithFilter(QAbstractItemModel *model, QAbstractItemView *view,QLineEdit* lineEdit,QSortFilterProxyModel *proxyModel)
{
    view->reset();
    if(!proxyModel)
        proxyModel = new QSortFilterProxyModel((QObject*)lineEdit);

    proxyModel->setSourceModel(model);
    view->setModel(proxyModel);
    //view->horizontalHeader()->setResizeMode(QHeaderView::Stretch);
    QTableView* tableView = dynamic_cast<QTableView*>(view);
    if(tableView)
    {
        tableView->horizontalHeader()->setStretchLastSection(true);
        tableView->resizeColumnsToContents();
        tableView->resizeRowsToContents();
        tableView->setSortingEnabled(true);
        tableView->verticalHeader()->hide();
    }

    QTreeView* treeView = dynamic_cast<QTreeView*>(view);
    if(treeView)
    {
        for(int i=0;i<model->columnCount();i++)
            treeView->resizeColumnToContents(i);
        treeView->setSortingEnabled(true);
    }


    // views' filter
    proxyModel->setFilterKeyColumn(0);
    proxyModel->setFilterCaseSensitivity(Qt::CaseInsensitive);
    connect(lineEdit,SIGNAL(textChanged(const QString&)),
            proxyModel,SLOT(setFilterWildcard(const QString&)),Qt::AutoConnection);

    return proxyModel;
}

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);

// ![0]
    QStandardItemModel model(0, 1);
    populateListModel(&model);
// ![0]

    QWidget toplevel;
    QVBoxLayout *layout = new QVBoxLayout(&toplevel);

// ![1]
    QMaemo5ValueButton *button1 = new QMaemo5ValueButton("Value besides text");
    button1->setValueLayout(QMaemo5ValueButton::ValueBesideText);
    QMaemo5ListPickSelector *selector1 = new QMaemo5ListPickSelector;
    selector1->setModel(&model);
    // not setting the current index means that the value is empty.
    button1->setPickSelector(selector1);
// ![1]

// ![2]
    QStandardItemModel tableModel(0, 0);
    populateTableModel(&tableModel);
// ![2]

// ![3]
    QMaemo5ValueButton *button2 = new QMaemo5ValueButton("Value under text");
    button2->setValueLayout(QMaemo5ValueButton::ValueUnderText);
    QMaemo5ListPickSelector *selector2 = new QMaemo5ListPickSelector;
    selector2->setModel(&tableModel);
    selector2->setModelColumn(2);
    selector2->setCurrentIndex(5);
    button2->setPickSelector(selector2);
// ![3]

    // create a custom view we want a table view instead of a list
    QTableView *view = new QTableView();
    view->setEditTriggers(QAbstractItemView::NoEditTriggers);

    // try to get a sensible column width and row height
    view->setModel(&tableModel); // set the model in order to get correct column widths
    view->resizeColumnsToContents();
    view->resizeRowsToContents();
    view->horizontalHeader()->setStretchLastSection(true);

    view->verticalHeader()->setVisible(false);
    view->horizontalHeader()->setVisible(false);
    view->setSelectionBehavior(QAbstractItemView::SelectRows);
    view->setSelectionMode(QAbstractItemView::SingleSelection);

    // five rows should be visible as a default
    if (view->verticalHeader()->sectionSize(0)>0)
        view->setMinimumHeight(view->verticalHeader()->sectionSize(0) * 5);

    QMaemo5ValueButton *button3 = new QMaemo5ValueButton("Value centered under text");
    button3->setValueLayout(QMaemo5ValueButton::ValueUnderTextCentered);
    QMaemo5ListPickSelector *selector3 = new QMaemo5ListPickSelector;
    selector3->setModel(&tableModel);
    selector3->setModelColumn(2);
    selector3->setView(view); // set our new custom view
    selector3->setCurrentIndex(0);
    button3->setPickSelector(selector3);

    layout->addWidget(button1);
    layout->addWidget(button2);
    layout->addWidget(button3);

    toplevel.show();

    return app.exec();
}