C++ QTabBar::removeTab方法代码示例

void tst_QTabBar::removeLastTab()
{
    QTabBar tabbar;
    QSignalSpy spy(&tabbar, SIGNAL(currentChanged(int)));
    int index = tabbar.addTab("foo");
    QCOMPARE(spy.count(), 1);
    QCOMPARE(spy.at(0).at(0).toInt(), index);
    spy.clear();

    tabbar.removeTab(index);
    QCOMPARE(spy.count(), 1);
    QCOMPARE(spy.at(0).at(0).toInt(), -1);
    spy.clear();
}

void tst_QTabBar::removeTab()
{
    QTabBar tabbar;

    QFETCH(int, currentIndex);
    QFETCH(int, deleteIndex);
    tabbar.addTab("foo");
    tabbar.addTab("bar");
    tabbar.addTab("baz");
    tabbar.setCurrentIndex(currentIndex);
    QSignalSpy spy(&tabbar, SIGNAL(currentChanged(int)));
    tabbar.removeTab(deleteIndex);
    QTEST(spy.count(), "spyCount");
    QTEST(tabbar.currentIndex(), "finalIndex");
}

void tst_QTabBar::selectionBehaviorOnRemove()
{
    QFETCH(QTabBar::SelectionBehavior, selectionBehavior);
    QFETCH(int, tabs);
    QFETCH(IntList, select);
    QFETCH(IntList, remove);
    QFETCH(int, expected);

    QTabBar tabbar;
    tabbar.setSelectionBehaviorOnRemove(selectionBehavior);
    while(--tabs >= 0)
        tabbar.addTab(QString::number(tabs));
    QCOMPARE(tabbar.currentIndex(), 0);
    while(!select.isEmpty())
        tabbar.setCurrentIndex(select.takeFirst());
    while(!remove.isEmpty())
        tabbar.removeTab(remove.takeFirst());
    QVERIFY(tabbar.count() > 0);
    QCOMPARE(tabbar.currentIndex(), expected);
}

void NativeTabItem::Dispose()
{
  QTabBar* widget = parent->GetTabFolder();
  int index = parent->IndexOf(this);
  widget->removeTab(index); // this calls QCTabBar::tabRemoved
}

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    auto *proxyStyle = new TabBarProxyStyle;
    app.setStyle(proxyStyle);

    QWidget widget;
    QStackedWidget stackedWidget;
    QTabBar tabBar;
    tabBar.setDocumentMode(true);
    tabBar.setTabsClosable(true);
    tabBar.setMovable(true);
    tabBar.setExpanding(false);

    // top
    tabBar.setShape(QTabBar::RoundedNorth);
    // bottom
//    tabBar.setShape(QTabBar::RoundedSouth);
    // left
//    tabBar.setShape(QTabBar::RoundedWest);
    // right
//    tabBar.setShape(QTabBar::RoundedEast);

    const auto shortLabel = QStringLiteral("Tab %1");
    const auto longLabel = QStringLiteral("An Extremely Long Tab Label %1");

    QMap<int, QWidget*> tabs;
    for (int i = 0; i < TabCount; i++) {
        QString tabNumberString = QString::number(i);
        QLabel *label = new QLabel(QStringLiteral("Tab %1 content").arg(tabNumberString));
        tabs[i] = label;
        label->setAlignment(Qt::AlignCenter);
        stackedWidget.addWidget(label);
        tabBar.addTab(shortLabel.arg(tabNumberString));
    }

    QObject::connect(&tabBar, &QTabBar::tabMoved, [&tabs](int from, int to) {
        QWidget *thisWidget = tabs[from];
        QWidget *thatWidget = tabs[to];
        tabs[from] = thatWidget;
        tabs[to] = thisWidget;
    });

    QObject::connect(&tabBar, &QTabBar::currentChanged, [&stackedWidget, &tabs](int index) {
        if (index >= 0)
            stackedWidget.setCurrentWidget(tabs[index]);
    });

    QObject::connect(&tabBar, &QTabBar::tabCloseRequested, [&stackedWidget, &tabBar, &tabs](int index) {
        QWidget *widget = tabs[index];
        tabBar.removeTab(index);
        for (int i = index + 1; i < TabCount; i++)
            tabs[i-1] = tabs[i];
        int currentIndex = tabBar.currentIndex();
        if (currentIndex >= 0)
            stackedWidget.setCurrentWidget(tabs[currentIndex]);
        delete widget;
    });

    QLayout *layout;
    switch (tabBar.shape()) {
    case QTabBar::RoundedEast:
    case QTabBar::TriangularEast:
        tabBar.setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Expanding);
        layout = new QHBoxLayout(&widget);
        layout->addWidget(&stackedWidget);
        layout->addWidget(&tabBar);
        break;
    case QTabBar::RoundedWest:
    case QTabBar::TriangularWest:
        tabBar.setSizePolicy(QSizePolicy::Minimum, QSizePolicy::Expanding);
        layout = new QHBoxLayout(&widget);
        layout->addWidget(&tabBar);
        layout->addWidget(&stackedWidget);
        break;
    case QTabBar::RoundedNorth:
    case QTabBar::TriangularNorth:
        tabBar.setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Minimum);
        layout = new QVBoxLayout(&widget);
        layout->addWidget(&tabBar);
        layout->addWidget(&stackedWidget);
        break;
    case QTabBar::RoundedSouth:
    case QTabBar::TriangularSouth:
        tabBar.setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Minimum);
        layout = new QVBoxLayout(&widget);
        layout->addWidget(&stackedWidget);
        layout->addWidget(&tabBar);
        break;
    }

    TabBarForm form;
    layout->addWidget(&form);
    layout->setAlignment(&form, Qt::AlignHCenter);

    form.ui->documentModeButton->setChecked(tabBar.documentMode());
    QObject::connect(form.ui->documentModeButton, &QCheckBox::toggled, [&] {
        tabBar.setDocumentMode(form.ui->documentModeButton->isChecked());
        // QMacStyle (and maybe other styles) requires a re-polish to get the right font
        QApplication::sendEvent(&tabBar, new QEvent(QEvent::ThemeChange));
//.........这里部分代码省略.........