C++ QContextMenuEvent::pos方法代码示例

bool IndexWindow::eventFilter(QObject *obj, QEvent *e)
{
    if (obj == m_searchLineEdit && e->type() == QEvent::KeyPress) {
        QKeyEvent *ke = static_cast<QKeyEvent*>(e);
        QModelIndex idx = m_indexWidget->currentIndex();
        switch (ke->key()) {
        case Qt::Key_Up:
            idx = m_indexWidget->model()->index(idx.row()-1,
                idx.column(), idx.parent());
            if (idx.isValid())
                m_indexWidget->setCurrentIndex(idx);
            break;
        case Qt::Key_Down:
            idx = m_indexWidget->model()->index(idx.row()+1,
                idx.column(), idx.parent());
            if (idx.isValid())
                m_indexWidget->setCurrentIndex(idx);
            break;
        case Qt::Key_Escape:
            MainWindow::activateCurrentCentralWidgetTab();
            break;
        default:
            ;
        }
    } else if (obj == m_indexWidget && e->type() == QEvent::ContextMenu) {
        QContextMenuEvent *ctxtEvent = static_cast<QContextMenuEvent*>(e);
        QModelIndex idx = m_indexWidget->indexAt(ctxtEvent->pos());
        if (idx.isValid()) {
            QMenu menu;
            QAction *curTab = menu.addAction(tr("Open Link"));
            QAction *newTab = menu.addAction(tr("Open Link in New Tab"));
            menu.move(m_indexWidget->mapToGlobal(ctxtEvent->pos()));

            QAction *action = menu.exec();
            if (curTab == action)
                m_indexWidget->activateCurrentItem();
            else if (newTab == action) {
                QHelpIndexModel *model = qobject_cast<QHelpIndexModel*>(m_indexWidget->model());
                QString keyword = model->data(idx, Qt::DisplayRole).toString();
                if (model) {
                    QMap<QString, QUrl> links = model->linksForKeyword(keyword);
                    if (links.count() == 1) {
                        CentralWidget::instance()->setSourceInNewTab(links.constBegin().value());
                    } else {
                        TopicChooser tc(this, keyword, links);
                        if (tc.exec() == QDialog::Accepted) {
                            CentralWidget::instance()->setSourceInNewTab(tc.link());
                        }
                    }
                }
            }
        }
    }
    return QWidget::eventFilter(obj, e);
}

WebKitPlatformMouseEvent::WebKitPlatformMouseEvent(QInputEvent* event, int clickCount)
{
    m_timestamp = WTF::currentTime();

    bool isContextMenuEvent = false;
#ifndef QT_NO_CONTEXTMENU
    if (event->type() == QEvent::ContextMenu) {
        isContextMenuEvent = true;
        m_type = PlatformEvent::MousePressed;
        QContextMenuEvent* ce = static_cast<QContextMenuEvent*>(event);
        m_position = IntPoint(ce->pos());
        m_globalPosition = IntPoint(ce->globalPos());
        m_button = RightButton;
    }
#endif
    if (!isContextMenuEvent) {
        PlatformEvent::Type type;
        mouseEventTypeAndMouseButtonFromQEvent(event, type, m_button);
        QMouseEvent* mouseEvent = static_cast<QMouseEvent*>(event);

        m_type = type;
        m_position = IntPoint(mouseEvent->pos());
        m_globalPosition = IntPoint(mouseEvent->globalPos());
    }

    m_clickCount = clickCount;
    mouseEventModifiersFromQtKeyboardModifiers(event->modifiers(), m_modifiers);
}

bool QToolBoxHelper::eventFilter(QObject *watched, QEvent *event)
{
    switch (event->type()) {
    case QEvent::ChildPolished:
        // Install on the buttons
        if (watched == m_toolbox) {
            QChildEvent *ce = static_cast<QChildEvent *>(event);
            if (!qstrcmp(ce->child()->metaObject()->className(), "QToolBoxButton"))
                ce->child()->installEventFilter(this);
        }
        break;
    case QEvent::ContextMenu:
        if (watched != m_toolbox) {
            // An action invoked from the passive interactor (ToolBox button) might
            // cause its deletion within its event handler, triggering a warning. Re-post
            // the event to the toolbox.
            QContextMenuEvent *current = static_cast<QContextMenuEvent *>(event);
            QContextMenuEvent *copy = new QContextMenuEvent(current->reason(), current->pos(), current-> globalPos(), current->modifiers());
            QApplication::postEvent(m_toolbox, copy);
            current->accept();
            return true;
        }
        break;
    case QEvent::MouseButtonRelease:
        if (watched != m_toolbox)
            if (QDesignerFormWindowInterface *fw = QDesignerFormWindowInterface::findFormWindow(m_toolbox)) {
                fw->clearSelection();
                fw->selectWidget(m_toolbox, true);
            }
        break;
    default:
        break;
    }
    return QObject::eventFilter(watched, event);
}

bool AbstractFloatItem::eventFilter( QObject *object, QEvent *e )
{
    if ( !enabled() || !visible() ) {
        return false;
    }

    if( e->type() == QEvent::ContextMenu )
    {
        QWidget *widget = dynamic_cast<QWidget *>( object );
        QContextMenuEvent *menuEvent = dynamic_cast<QContextMenuEvent *> ( e );
        if( widget != NULL && menuEvent != NULL && contains( menuEvent->pos() ) )
        {
            contextMenuEvent( widget, menuEvent );
            return true;
        }
        return false;
    }
    else if( e->type() == QEvent::ToolTip )
    {
        QHelpEvent *helpEvent = dynamic_cast<QHelpEvent *>( e );
        if( helpEvent != NULL && contains( helpEvent->pos() ) )
        {
            toolTipEvent( helpEvent );
            return true;
        }
        return false;
    }
    else
        return ScreenGraphicsItem::eventFilter( object, e );
}

PlatformMouseEvent::PlatformMouseEvent(QInputEvent* event, int clickCount)
{
    m_timestamp = WTF::currentTime();

    QMouseEvent* me = 0;

    switch (event->type()) {
    case QEvent::MouseMove:
        m_eventType = MouseEventMoved;
        me = static_cast<QMouseEvent *>(event);
        break;
    case QEvent::MouseButtonDblClick:
    case QEvent::MouseButtonPress:
        m_eventType = MouseEventPressed;
        me = static_cast<QMouseEvent *>(event);
        break;
    case QEvent::MouseButtonRelease:
        m_eventType = MouseEventReleased;
        me = static_cast<QMouseEvent *>(event);
        break;
#ifndef QT_NO_CONTEXTMENU
    case QEvent::ContextMenu: {
        m_eventType = MouseEventPressed;
        QContextMenuEvent* ce = static_cast<QContextMenuEvent*>(event);
        m_position = IntPoint(ce->pos());
        m_globalPosition = IntPoint(ce->globalPos());
        m_button = RightButton;
        break;
    }
#endif // QT_NO_CONTEXTMENU
    default:
        m_eventType = MouseEventMoved;
    }

    if (me) {
        m_position = IntPoint(me->pos());
        m_globalPosition = IntPoint(me->globalPos());

        if (me->button() == Qt::LeftButton || (me->buttons() & Qt::LeftButton))
            m_button = LeftButton;
        else if (me->button() == Qt::RightButton || (me->buttons() & Qt::RightButton))
            m_button = RightButton;
        else if (me->button() == Qt::MidButton || (me->buttons() & Qt::MidButton))
            m_button = MiddleButton;
        else
            m_button = NoButton;
    }

    m_clickCount = clickCount;
    m_shiftKey =  (event->modifiers() & Qt::ShiftModifier);
    m_ctrlKey = (event->modifiers() & Qt::ControlModifier);
    m_altKey =  (event->modifiers() & Qt::AltModifier);
    m_metaKey = (event->modifiers() & Qt::MetaModifier);
}

bool SessionListWidget::event(QEvent *event)
{
#ifndef QUTIM_MOBILE_UI
	if (event->type() == QEvent::ToolTip) {
		if (QHelpEvent *help = static_cast<QHelpEvent*>(event)) {
			int index = indexAt(help->pos()).row();
			if (index != -1) {
				ChatUnit *unit = session(index)->getUnit();
				ToolTip::instance()->showText(help->globalPos(), unit, this);
				return true;
			}
		}
	} else if (event->type() == QEvent::DragEnter) {
		QDragEnterEvent *dragEvent = static_cast<QDragEnterEvent*>(event);
		if (const MimeObjectData *data = qobject_cast<const MimeObjectData*>(dragEvent->mimeData())) {
			ChatUnit *u = qobject_cast<ChatUnit*>(data->object());
			if (u)
				dragEvent->acceptProposedAction();
		}
		return true;
	} else if (event->type() == QEvent::Drop) {
		QDropEvent *dropEvent = static_cast<QDropEvent*>(event);
		if (const MimeObjectData *mimeData
				= qobject_cast<const MimeObjectData*>(dropEvent->mimeData())) {
			if (ChatUnit *u = qobject_cast<ChatUnit*>(mimeData->object())) {
				ChatLayerImpl::get(u,true)->activate();
				dropEvent->setDropAction(Qt::CopyAction);
				dropEvent->accept();
				return true;
			}
		}
	} else 
#endif
	if (event->type() == QEvent::ContextMenu) {
		QContextMenuEvent *ev = static_cast<QContextMenuEvent*>(event);
		ChatSessionImpl *s = session(row(itemAt(ev->pos())));
		if(s) {
			s->unit()->showMenu(ev->globalPos());
			return true;
		}

	}
	return QListWidget::event(event);
}

bool MainWindow::eventFilter(QObject *object, QEvent *event)
{
	if (event->type() == QEvent::ContextMenu && object->objectName().contains(QLatin1String("bookmarks"), Qt::CaseInsensitive))
	{
		QContextMenuEvent *contextMenuEvent = static_cast<QContextMenuEvent*>(event);
		QMenu *menu = qobject_cast<QMenu*>(object);

		if (contextMenuEvent && menu)
		{
			QAction *action = menu->actionAt(contextMenuEvent->pos());

			if (action && action->data().type() == QVariant::String)
			{
				m_currentBookmark = action->data().toString();

				QMenu contextMenu(this);
				contextMenu.addAction(Utils::getIcon(QLatin1String("document-open")), tr("Open"), this, SLOT(openBookmark()));
				contextMenu.addAction(tr("Open in New Tab"), this, SLOT(openBookmark()))->setData(NewTabOpen);
				contextMenu.addAction(tr("Open in New Background Tab"), this, SLOT(openBookmark()))->setData(NewTabBackgroundOpen);
				contextMenu.addSeparator();
				contextMenu.addAction(tr("Open in New Window"), this, SLOT(openBookmark()))->setData(NewWindowOpen);
				contextMenu.addAction(tr("Open in New Background Window"), this, SLOT(openBookmark()))->setData(NewWindowBackgroundOpen);
				contextMenu.exec(contextMenuEvent->globalPos());

				return true;
			}
		}
	}

	if (event->type() == QEvent::KeyPress && isFullScreen())
	{
		QKeyEvent *keyEvent = static_cast<QKeyEvent*>(event);

		if (keyEvent->key() == Qt::Key_Escape)
		{
			actionFullScreen();
		}
	}

	return QMainWindow::eventFilter(object, event);
}

/*! \reimp */
bool QToolBar::event(QEvent *event)
{
    Q_D(QToolBar);

    switch (event->type()) {
    case QEvent::Timer:
        if (d->waitForPopupTimer.timerId() == static_cast<QTimerEvent*>(event)->timerId()) {
            QWidget *w = QApplication::activePopupWidget();
            if (!waitForPopup(this, w)) {
                d->waitForPopupTimer.stop();
                if (!this->underMouse())
                    d->layout->setExpanded(false);
            }
        }
        break;
    case QEvent::Hide:
        if (!isHidden())
            break;
    // fallthrough intended
    case QEvent::Show:
        d->toggleViewAction->setChecked(event->type() == QEvent::Show);
        emit visibilityChanged(event->type() == QEvent::Show);
#if defined(Q_WS_MAC)
        if (toolbarInUnifiedToolBar(this)) {
            // I can static_cast because I did the qobject_cast in the if above, therefore
            // we must have a QMainWindowLayout here.
            QMainWindowLayout *mwLayout = static_cast<QMainWindowLayout *>(parentWidget()->layout());
            mwLayout->fixSizeInUnifiedToolbar(this);
            mwLayout->syncUnifiedToolbarVisibility();
        }
#  if !defined(QT_MAC_USE_COCOA)
    // Fall through
    case QEvent::LayoutRequest: {
        // There's currently no way to invalidate the size and let
        // HIToolbar know about it. This forces a re-check.
        int earlyResult = -1;
        if (QMainWindow *mainWindow = qobject_cast<QMainWindow *>(parentWidget())) {
            bool needUpdate = true;
            if (event->type() == QEvent::LayoutRequest) {
                QSize oldSizeHint = sizeHint();
                earlyResult = QWidget::event(event) ? 1 : 0;
                needUpdate = oldSizeHint != sizeHint();
            }

            if (needUpdate) {
                OSWindowRef windowRef = qt_mac_window_for(mainWindow);
                if (toolbarInUnifiedToolBar(this)
                        && macWindowToolbarIsVisible(windowRef))   {
                    DisableScreenUpdates();
                    macWindowToolbarShow(this, false);
                    macWindowToolbarShow(this, true);
                    EnableScreenUpdates();
                }
            }

            if (earlyResult != -1)
                return earlyResult;
        }
    }
#  endif // !QT_MAC_USE_COCOA
#endif // Q_WS_MAC
    break;
    case QEvent::ParentChange:
        d->layout->checkUsePopupMenu();
#if defined(Q_WS_MAC)
        if (parentWidget() && parentWidget()->isWindow())
            qt_mac_updateToolBarButtonHint(parentWidget());
#endif
        break;

    case QEvent::MouseButtonPress: {
        if (d->mousePressEvent(static_cast<QMouseEvent*>(event)))
            return true;
        break;
    }
    case QEvent::MouseButtonRelease:
        if (d->mouseReleaseEvent(static_cast<QMouseEvent*>(event)))
            return true;
        break;
    case QEvent::HoverEnter:
    case QEvent::HoverLeave:
        // there's nothing special to do here and we don't want to update the whole widget
        return true;
    case QEvent::HoverMove: {
#ifndef QT_NO_CURSOR
        QHoverEvent *e = static_cast<QHoverEvent*>(event);
        QStyleOptionToolBar opt;
        initStyleOption(&opt);
        if (style()->subElementRect(QStyle::SE_ToolBarHandle, &opt, this).contains(e->pos()))
            setCursor(Qt::SizeAllCursor);
        else
            unsetCursor();
#endif
        break;
    }
    case QEvent::MouseMove:
        if (d->mouseMoveEvent(static_cast<QMouseEvent*>(event)))
            return true;
        break;
//.........这里部分代码省略.........

/*! \reimp */
bool QToolBar::event(QEvent *event)
{
    Q_D(QToolBar);

    switch (event->type()) {
    case QEvent::Timer:
        if (d->waitForPopupTimer.timerId() == static_cast<QTimerEvent*>(event)->timerId()) {
            QWidget *w = QApplication::activePopupWidget();
            if (!waitForPopup(this, w)) {
                d->waitForPopupTimer.stop();
                if (!this->underMouse())
                    d->layout->setExpanded(false);
            }
        }
        break;
    case QEvent::Hide:
        if (!isHidden())
            break;
        // fallthrough intended
    case QEvent::Show:
        d->toggleViewAction->setChecked(event->type() == QEvent::Show);
#ifdef Q_OS_OSX
        enableMacToolBar(this, event->type() == QEvent::Show);
#endif
        emit visibilityChanged(event->type() == QEvent::Show);
        break;
    case QEvent::ParentChange:
        d->layout->checkUsePopupMenu();
        break;

    case QEvent::MouseButtonPress: {
        if (d->mousePressEvent(static_cast<QMouseEvent*>(event)))
            return true;
        break;
    }
    case QEvent::MouseButtonRelease:
        if (d->mouseReleaseEvent(static_cast<QMouseEvent*>(event)))
            return true;
        break;
    case QEvent::HoverEnter:
    case QEvent::HoverLeave:
        // there's nothing special to do here and we don't want to update the whole widget
        return true;
    case QEvent::HoverMove: {
#ifndef QT_NO_CURSOR
        QHoverEvent *e = static_cast<QHoverEvent*>(event);
        QStyleOptionToolBar opt;
        initStyleOption(&opt);
        if (style()->subElementRect(QStyle::SE_ToolBarHandle, &opt, this).contains(e->pos()))
            setCursor(Qt::SizeAllCursor);
        else
            unsetCursor();
#endif
        break;
    }
    case QEvent::MouseMove:
        if (d->mouseMoveEvent(static_cast<QMouseEvent*>(event)))
            return true;
        break;
#ifdef Q_OS_WINCE
    case QEvent::ContextMenu:
        {
            QContextMenuEvent* contextMenuEvent = static_cast<QContextMenuEvent*>(event);
            QWidget* child = childAt(contextMenuEvent->pos());
            QAbstractButton* button = qobject_cast<QAbstractButton*>(child);
            if (button)
                button->setDown(false);
        }
        break;
#endif
    case QEvent::Leave:
        if (d->state != 0 && d->state->dragging) {
#ifdef Q_OS_WIN
            // This is a workaround for loosing the mouse on Vista.
            QPoint pos = QCursor::pos();
            QMouseEvent fake(QEvent::MouseMove, mapFromGlobal(pos), pos, Qt::NoButton,
                             QApplication::mouseButtons(), QApplication::keyboardModifiers());
            d->mouseMoveEvent(&fake);
#endif
        } else {
            if (!d->layout->expanded)
                break;

            QWidget *w = QApplication::activePopupWidget();
            if (waitForPopup(this, w)) {
                d->waitForPopupTimer.start(POPUP_TIMER_INTERVAL, this);
                break;
            }

            d->waitForPopupTimer.stop();
            d->layout->setExpanded(false);
            break;
        }
    default:
        break;
    }
    return QWidget::event(event);
}

bool MarkdownEditor::eventFilter(QObject* watched, QEvent* event)
{
    if (event->type() == QEvent::MouseButtonPress)
    {
        mouseButtonDown = true;
    }
    else if (event->type() == QEvent::MouseButtonRelease)
    {
        mouseButtonDown = false;
    }
    else if (event->type() == QEvent::MouseButtonDblClick)
    {
        mouseButtonDown = true;
    }

    if (event->type() != QEvent::ContextMenu || !spellCheckEnabled || this->isReadOnly())
    {
        return QPlainTextEdit::eventFilter(watched, event);
    }
    else
    {
        // Check spelling of text block under mouse
        QContextMenuEvent* contextEvent = static_cast<QContextMenuEvent*>(event);
        cursorForWord = cursorForPosition(contextEvent->pos());

        QTextCharFormat::UnderlineStyle spellingErrorUnderlineStyle =
            (QTextCharFormat::UnderlineStyle)
            QApplication::style()->styleHint
            (
                QStyle::SH_SpellCheckUnderlineStyle
            );

        // Get the formatting for the cursor position under the mouse,
        // and see if it has the spell check error underline style.
        //
        bool wordHasSpellingError = false;
        int blockPosition = cursorForWord.positionInBlock();
        QList<QTextLayout::FormatRange> formatList =
                textCursor().block().layout()->additionalFormats();
        int mispelledWordStartPos = 0;
        int mispelledWordLength = 0;

        for (int i = 0; i < formatList.length(); i++)
        {
            QTextLayout::FormatRange formatRange = formatList[i];

            if
            (
                (blockPosition >= formatRange.start)
                && (blockPosition <= (formatRange.start + formatRange.length))
                && (formatRange.format.underlineStyle() == spellingErrorUnderlineStyle)
            )
            {
                mispelledWordStartPos = formatRange.start;
                mispelledWordLength = formatRange.length;
                wordHasSpellingError = true;
                break;
            }
        }

        // The word under the mouse is spelled correctly, so use the default
        // processing for the context menu and return.
        //
        if (!wordHasSpellingError)
        {
            return QPlainTextEdit::eventFilter(watched, event);
        }

        // Select the misspelled word.
        cursorForWord.movePosition(QTextCursor::PreviousCharacter, QTextCursor::MoveAnchor, blockPosition - mispelledWordStartPos);
        cursorForWord.movePosition(QTextCursor::NextCharacter, QTextCursor::KeepAnchor, mispelledWordLength);

        wordUnderMouse = cursorForWord.selectedText();
        QStringList suggestions = dictionary.suggestions(wordUnderMouse);
        QMenu* popupMenu = createStandardContextMenu();
        QAction* firstAction = popupMenu->actions().first();

        spellingActions.clear();

        if (!suggestions.empty())
        {
            for (int i = 0; i < suggestions.size(); i++)
            {
                QAction* suggestionAction = new QAction(suggestions[i], this);
                spellingActions.append(suggestionAction);
                popupMenu->insertAction(firstAction, suggestionAction);
            }
        }
        else
        {
            QAction* noSuggestionsAction =
                new QAction(tr("No spelling suggestions found"), this);
            noSuggestionsAction->setEnabled(false);
            spellingActions.append(noSuggestionsAction);
            popupMenu->insertAction(firstAction, noSuggestionsAction);
        }

        popupMenu->insertSeparator(firstAction);
        popupMenu->insertAction(firstAction, addWordToDictionaryAction);
        popupMenu->insertSeparator(firstAction);
//.........这里部分代码省略.........

bool IndexWindow::eventFilter(QObject *obj, QEvent *e)
{
    if (obj == m_searchLineEdit && e->type() == QEvent::KeyPress) {
        QKeyEvent *ke = static_cast<QKeyEvent*>(e);
        QModelIndex idx = m_indexWidget->currentIndex();
        switch (ke->key()) {
        case Qt::Key_Up:
            idx = m_indexWidget->model()->index(idx.row()-1,
                idx.column(), idx.parent());
            if (idx.isValid())
                m_indexWidget->setCurrentIndex(idx);
            break;
        case Qt::Key_Down:
            idx = m_indexWidget->model()->index(idx.row()+1,
                idx.column(), idx.parent());
            if (idx.isValid())
                m_indexWidget->setCurrentIndex(idx);
            break;
        default: ; // stop complaining
        }
    } else if (obj == m_searchLineEdit
            && e->type() == QEvent::FocusIn
            && static_cast<QFocusEvent *>(e)->reason() != Qt::MouseFocusReason) {
        m_searchLineEdit->selectAll();
        m_searchLineEdit->setFocus();
    } else if (obj == m_indexWidget && e->type() == QEvent::ContextMenu) {
        QContextMenuEvent *ctxtEvent = static_cast<QContextMenuEvent*>(e);
        QModelIndex idx = m_indexWidget->indexAt(ctxtEvent->pos());
        if (idx.isValid()) {
            QMenu menu;
            QAction *curTab = menu.addAction(tr("Open Link"));
            QAction *newTab = menu.addAction(tr("Open Link as New Page"));
            menu.move(m_indexWidget->mapToGlobal(ctxtEvent->pos()));

            QAction *action = menu.exec();
            if (curTab == action)
                m_indexWidget->activateCurrentItem();
            else if (newTab == action) {
                open(m_indexWidget, idx);
            }
        }
    } else if (m_indexWidget && obj == m_indexWidget->viewport()
        && e->type() == QEvent::MouseButtonRelease) {
        QMouseEvent *mouseEvent = static_cast<QMouseEvent*>(e);
        QModelIndex idx = m_indexWidget->indexAt(mouseEvent->pos());
        if (idx.isValid()) {
            Qt::MouseButtons button = mouseEvent->button();
            if (((button == Qt::LeftButton) && (mouseEvent->modifiers() & Qt::ControlModifier))
                || (button == Qt::MidButton)) {
                open(m_indexWidget, idx);
            }
        }
    }
    else if (Utils::HostOsInfo::isMacHost() && obj == m_indexWidget
             && e->type() == QEvent::KeyPress) {
        QKeyEvent *ke = static_cast<QKeyEvent*>(e);
        if (ke->key() == Qt::Key_Return || ke->key() == Qt::Key_Enter)
           m_indexWidget->activateCurrentItem();
    }

    return QWidget::eventFilter(obj, e);
}

bool TabTreeView::viewportEvent(QEvent *event)
{
    switch (event->type()) {
    case QEvent::MouseButtonPress: {
        QMouseEvent *me = static_cast<QMouseEvent*>(event);
        const QModelIndex index = indexAt(me->pos());
        updateIndex(index);
        WebTab *tab = index.data(TabModel::WebTabRole).value<WebTab*>();
        if (me->buttons() == Qt::MiddleButton && tab) {
            tab->closeTab();
        }
        if (me->buttons() != Qt::LeftButton) {
            m_pressedIndex = QModelIndex();
            m_pressedButton = NoButton;
            break;
        }
        m_pressedIndex = index;
        m_pressedButton = buttonAt(me->pos(), m_pressedIndex);
        if (m_pressedIndex.isValid()) {
            if (m_pressedButton == ExpandButton) {
                if (isExpanded(m_pressedIndex)) {
                    collapse(m_pressedIndex);
                } else {
                    expand(m_pressedIndex);
                }
            } else if (m_pressedButton == NoButton && tab) {
                tab->makeCurrentTab();
            }
        }
        if (m_pressedButton == CloseButton) {
            me->accept();
            return true;
        }
        break;
    }

    case QEvent::MouseMove: {
        QMouseEvent *me = static_cast<QMouseEvent*>(event);
        if (m_pressedButton == CloseButton) {
            me->accept();
            return true;
        }
        break;
    }

    case QEvent::MouseButtonRelease: {
        QMouseEvent *me = static_cast<QMouseEvent*>(event);
        if (me->buttons() != Qt::NoButton) {
            break;
        }
        const QModelIndex index = indexAt(me->pos());
        updateIndex(index);
        if (m_pressedIndex != index) {
            break;
        }
        DelegateButton button = buttonAt(me->pos(), index);
        if (m_pressedButton == button) {
            if (m_pressedButton == ExpandButton) {
                me->accept();
                return true;
            }
            WebTab *tab = index.data(TabModel::WebTabRole).value<WebTab*>();
            if (tab) {
                if (m_pressedButton == CloseButton) {
                    tab->closeTab();
                } else if (m_pressedButton == AudioButton) {
                    tab->toggleMuted();
                }
            }
        }
        if (m_pressedButton == CloseButton) {
            me->accept();
            return true;
        }
        break;
    }

    case QEvent::HoverEnter:
    case QEvent::HoverLeave:
    case QEvent::HoverMove: {
        QHoverEvent *he = static_cast<QHoverEvent*>(event);
        updateIndex(m_hoveredIndex);
        m_hoveredIndex = indexAt(he->pos());
        updateIndex(m_hoveredIndex);
        break;
    }

    case QEvent::ToolTip: {
        QHelpEvent *he = static_cast<QHelpEvent*>(event);
        const QModelIndex index = indexAt(he->pos());
        DelegateButton button = buttonAt(he->pos(), index);
        if (button == AudioButton) {
            const bool muted = index.data(TabModel::AudioMutedRole).toBool();
            QToolTip::showText(he->globalPos(), muted ? tr("Unmute Tab") : tr("Mute Tab"), this, visualRect(index));
            he->accept();
            return true;
        } else if (button == CloseButton) {
            QToolTip::showText(he->globalPos(), tr("Close Tab"), this, visualRect(index));
            he->accept();
            return true;
//.........这里部分代码省略.........

bool HelpIndexView::eventFilter(QObject *obj, QEvent *e)
{
  if (obj == m_SearchLineEdit && e->type() == QEvent::KeyPress)
  {
    QKeyEvent *ke = static_cast<QKeyEvent*>(e);
    QModelIndex idx = m_IndexWidget->currentIndex();
    switch (ke->key())
    {
    case Qt::Key_Up:
      idx = m_IndexWidget->model()->index(idx.row()-1,
                                          idx.column(), idx.parent());
      if (idx.isValid())
      {
        m_IndexWidget->setCurrentIndex(idx);
        return true;
      }
      break;
    case Qt::Key_Down:
      idx = m_IndexWidget->model()->index(idx.row()+1,
                                          idx.column(), idx.parent());
      if (idx.isValid())
      {
        m_IndexWidget->setCurrentIndex(idx);
        return true;
      }
      break;
    default: ; // stop complaining
    }
  }
  else if (obj == m_IndexWidget && e->type() == QEvent::ContextMenu)
  {
    QContextMenuEvent *ctxtEvent = static_cast<QContextMenuEvent*>(e);
    QModelIndex idx = m_IndexWidget->indexAt(ctxtEvent->pos());
    if (idx.isValid())
    {
      QMenu menu;
      QAction *curTab = menu.addAction(tr("Open Link"));
      QAction *newTab = menu.addAction(tr("Open Link in New Tab"));
      menu.move(m_IndexWidget->mapToGlobal(ctxtEvent->pos()));

      QAction *action = menu.exec();
      if (curTab == action)
        m_IndexWidget->activateCurrentItem();
      else if (newTab == action)
      {
        open(m_IndexWidget, idx);
      }
    }
  }
  else if (m_IndexWidget && obj == m_IndexWidget->viewport()
           && e->type() == QEvent::MouseButtonRelease)
  {
    QMouseEvent *mouseEvent = static_cast<QMouseEvent*>(e);
    QModelIndex idx = m_IndexWidget->indexAt(mouseEvent->pos());
    if (idx.isValid())
    {
      Qt::MouseButtons button = mouseEvent->button();
      if (((button == Qt::LeftButton) && (mouseEvent->modifiers() & Qt::ControlModifier))
          || (button == Qt::MidButton))
      {
        open(m_IndexWidget, idx);
      }
    }
  }
#ifdef Q_OS_MAC
  else if (obj == m_IndexWidget && e->type() == QEvent::KeyPress)
  {
    QKeyEvent *ke = static_cast<QKeyEvent*>(e);
    if (ke->key() == Qt::Key_Return || ke->key() == Qt::Key_Enter)
      m_IndexWidget->activateCurrentItem();
  }
#endif
  return QObject::eventFilter(obj, e);
}