qmenu.cpp

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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#include "qmenu.h"
 
#include <QtWidgets/private/qtwidgetsglobal_p.h>
#include <QtWidgets/private/qwidgetwindow_p.h>
 
#include "qactiongroup.h"
#include "qdebug.h"
#include "qstyle.h"
#include "qevent.h"
#include "qtimer.h"
#include "qlayout.h"
#include "qstylepainter.h"
#include <qpa/qplatformtheme.h>
#include "qapplication.h"
#if QT_CONFIG(accessibility)
# include "qaccessible.h"
#endif
#if QT_CONFIG(effects)
# include <private/qeffects_p.h>
#endif
#if QT_CONFIG(whatsthis)
# include <qwhatsthis.h>
#endif
 
#include "qmenu_p.h"
#if QT_CONFIG(menubar)
#include "qmenubar_p.h"
#endif
#include "qwidgetaction.h"
#if QT_CONFIG(toolbutton)
#include "qtoolbutton.h"
#endif
#include "qpushbutton.h"
#if QT_CONFIG(tooltip)
#include "qtooltip.h"
#endif
#include <qwindow.h>
#include <private/qpushbutton_p.h>
#include <private/qaction_p.h>
#include <private/qguiapplication_p.h>
#include <qpa/qplatformtheme.h>
#include <private/qstyle_p.h>
 
QT_BEGIN_NAMESPACE
 
QMenu *QMenuPrivate::mouseDown = nullptr;
 
/* QMenu code */
// internal class used for the torn off popup
class QTornOffMenu : public QMenu
{
    Q_OBJECT
    class QTornOffMenuPrivate : public QMenuPrivate
    {
        Q_DECLARE_PUBLIC(QTornOffMenu)
    public:
        QTornOffMenuPrivate(QMenu *p) : causedMenu(p), initialized(false) {
            tornoff = 1;
            causedPopup.widget = nullptr;
            causedPopup.action = p->d_func()->causedPopup.action;
            causedStack = p->d_func()->calcCausedStack();
        }
 
        void setMenuSize(const QSize &menuSize) {
            Q_Q(QTornOffMenu);
            QSize size = menuSize;
            const QPoint p = (!initialized) ? causedMenu->pos() : q->pos();
            const QRect screen = popupGeometry(QGuiApplication::screenAt(p));
            const int desktopFrame = q->style()->pixelMetric(QStyle::PM_MenuDesktopFrameWidth, nullptr, q);
            const int titleBarHeight = q->style()->pixelMetric(QStyle::PM_TitleBarHeight, nullptr, q);
            if (scroll && (size.height() > screen.height() - titleBarHeight || size.width() > screen.width())) {
                const int fw = q->style()->pixelMetric(QStyle::PM_MenuPanelWidth, nullptr, q);
                const int hmargin = q->style()->pixelMetric(QStyle::PM_MenuHMargin, nullptr, q);
                scroll->scrollFlags |= uint(QMenuPrivate::QMenuScroller::ScrollDown);
                size.setWidth(qMin(actionRects.at(getLastVisibleAction()).right() + fw + hmargin + rightmargin + 1, screen.width()));
                size.setHeight(screen.height() - desktopFrame * 2 - titleBarHeight);
            }
            q->setFixedSize(size);
        }
 
        QList<QPointer<QWidget>> calcCausedStack() const override { return causedStack; }
        QPointer<QMenu> causedMenu;
        QList<QPointer<QWidget>> causedStack;
        bool initialized;
    };
 
public:
    QTornOffMenu(QMenu *p) : QMenu(*(new QTornOffMenuPrivate(p)))
    {
        Q_D(QTornOffMenu);
        // make the torn-off menu a sibling of p (instead of a child)
        QWidget *parentWidget = d->causedStack.isEmpty() ? p : d->causedStack.constLast();
        if (!parentWidget && p)
            parentWidget = p;
        if (parentWidget && parentWidget->parentWidget())
            parentWidget = parentWidget->parentWidget();
        setParent(parentWidget, Qt::Window | Qt::Tool);
        setAttribute(Qt::WA_DeleteOnClose, true);
        setAttribute(Qt::WA_X11NetWmWindowTypeMenu, true);
        updateWindowTitle();
        setEnabled(p->isEnabled());
#if QT_CONFIG(style_stylesheet)
        setStyleSheet(p->styleSheet());
#endif
        if (style() != p->style())
            setStyle(p->style());
        setContentsMargins(p->contentsMargins());
        setLayoutDirection(p->layoutDirection());
        //QObject::connect(this, SIGNAL(triggered(QAction*)), this, SLOT(onTrigger(QAction*)));
        //QObject::connect(this, SIGNAL(hovered(QAction*)), this, SLOT(onHovered(QAction*)));
        QList<QAction*> items = p->actions();
        for(int i = 0; i < items.size(); i++)
            addAction(items.at(i));
        d->setMenuSize(sizeHint());
        d->initialized = true;
    }
    void syncWithMenu(QMenu *menu, QActionEvent *act)
    {
        Q_D(QTornOffMenu);
        if (menu != d->causedMenu)
            return;
        auto action = static_cast<QAction *>(act->action());
        if (act->type() == QEvent::ActionAdded) {
            insertAction(static_cast<QAction *>(act->before()), action);
        } else if (act->type() == QEvent::ActionRemoved)
            removeAction(action);
    }
    void actionEvent(QActionEvent *e) override
    {
        Q_D(QTornOffMenu);
        QMenu::actionEvent(e);
        if (d->initialized) {
            d->setMenuSize(sizeHint());
        }
    }
 
    void updateWindowTitle()
    {
        Q_D(QTornOffMenu);
        if (!d->causedMenu)
            return;
        const QString &cleanTitle = QPlatformTheme::removeMnemonics(d->causedMenu->title()).trimmed();
        setWindowTitle(cleanTitle);
    }
 
public slots:
    void onTrigger(QAction *action) { d_func()->activateAction(action, QAction::Trigger, false); }
    void onHovered(QAction *action) { d_func()->activateAction(action, QAction::Hover, false); }
 
private:
    Q_DECLARE_PRIVATE(QTornOffMenu)
    friend class QMenuPrivate;
};
 
void QMenuPrivate::init()
{
    Q_Q(QMenu);
#if QT_CONFIG(whatsthis)
    q->setAttribute(Qt::WA_CustomWhatsThis);
#endif
    q->setAttribute(Qt::WA_X11NetWmWindowTypePopupMenu);
    defaultMenuAction = menuAction = new QAction(q);
    menuAction->setMenu(q); // this calls setOverrideMenuAction
    setOverrideMenuAction(nullptr);
    QObject::connect(menuAction, &QAction::changed, q, [this] {
        if (!tornPopup.isNull())
            tornPopup->updateWindowTitle();
    });
    q->setMouseTracking(q->style()->styleHint(QStyle::SH_Menu_MouseTracking, nullptr, q));
    if (q->style()->styleHint(QStyle::SH_Menu_Scrollable, nullptr, q)) {
        scroll = new QMenuPrivate::QMenuScroller;
        scroll->scrollFlags = QMenuPrivate::QMenuScroller::ScrollNone;
    }
 
    sloppyState.initialize(q);
    delayState.initialize(q);
    mousePopupDelay = q->style()->styleHint(QStyle::SH_Menu_SubMenuPopupDelay, nullptr, q);
}
 
QPlatformMenu *QMenuPrivate::createPlatformMenu()
{
    Q_Q(QMenu);
    if (platformMenu.isNull())
        q->setPlatformMenu(QGuiApplicationPrivate::platformTheme()->createPlatformMenu());
    return platformMenu.data();
}
 
void QMenuPrivate::setPlatformMenu(QPlatformMenu *menu)
{
    Q_Q(QMenu);
    if (!platformMenu.isNull() && !platformMenu->parent())
        delete platformMenu.data();
 
    platformMenu = menu;
    if (!platformMenu.isNull()) {
        QObject::connect(platformMenu, SIGNAL(aboutToShow()), q, SLOT(_q_platformMenuAboutToShow()));
        QObject::connect(platformMenu, SIGNAL(aboutToHide()), q, SIGNAL(aboutToHide()));
    }
}
 
void QMenuPrivate::syncPlatformMenu()
{
    Q_Q(QMenu);
    if (platformMenu.isNull())
        return;
 
    QPlatformMenuItem *beforeItem = nullptr;
    const QList<QAction*> actions = q->actions();
    for (QList<QAction*>::const_reverse_iterator it = actions.rbegin(), end = actions.rend(); it != end; ++it) {
        QPlatformMenuItem *menuItem = insertActionInPlatformMenu(*it, beforeItem);
        beforeItem = menuItem;
    }
    platformMenu->syncSeparatorsCollapsible(collapsibleSeparators);
    platformMenu->setEnabled(q->isEnabled());
}
 
static QWidget *getParentWidget(const QAction *action)
{
    auto result = action->parent();
    while (result && !qobject_cast<QWidget *>(result))
        result = result->parent();
    return static_cast<QWidget *>(result);
}
 
void QMenuPrivate::copyActionToPlatformItem(const QAction *action, QPlatformMenuItem *item)
{
    item->setText(action->text());
    item->setIsSeparator(action->isSeparator());
    if (action->isIconVisibleInMenu()) {
        item->setIcon(action->icon());
        if (QWidget *w = getParentWidget(action)) {
            QStyleOption opt;
            opt.initFrom(w);
            item->setIconSize(w->style()->pixelMetric(QStyle::PM_SmallIconSize, &opt, w));
        } else {
            QStyleOption opt;
            item->setIconSize(QApplication::style()->pixelMetric(QStyle::PM_SmallIconSize, &opt, nullptr));
        }
    } else {
        item->setIcon(QIcon());
    }
    item->setVisible(action->isVisible());
#if QT_CONFIG(shortcut)
    item->setShortcut(action->shortcut());
#endif
    item->setCheckable(action->isCheckable());
    item->setChecked(action->isChecked());
    item->setHasExclusiveGroup(action->actionGroup() && action->actionGroup()->isExclusive());
    item->setFont(action->font());
    item->setRole((QPlatformMenuItem::MenuRole) action->menuRole());
    item->setEnabled(action->isEnabled());
 
    if (action->menu()) {
        if (!action->menu()->platformMenu())
            action->menu()->setPlatformMenu(platformMenu->createSubMenu());
        item->setMenu(action->menu()->platformMenu());
    } else {
        item->setMenu(nullptr);
    }
}
 
QPlatformMenuItem * QMenuPrivate::insertActionInPlatformMenu(const QAction *action, QPlatformMenuItem *beforeItem)
{
    QPlatformMenuItem *menuItem = platformMenu->createMenuItem();
    Q_ASSERT(menuItem);
 
    menuItem->setTag(reinterpret_cast<quintptr>(action));
    QObject::connect(menuItem, &QPlatformMenuItem::activated, action, &QAction::trigger, Qt::QueuedConnection);
    QObject::connect(menuItem, &QPlatformMenuItem::hovered, action, &QAction::hovered, Qt::QueuedConnection);
    copyActionToPlatformItem(action, menuItem);
    platformMenu->insertMenuItem(menuItem, beforeItem);
 
    return menuItem;
}
 
int QMenuPrivate::scrollerHeight() const
{
    Q_Q(const QMenu);
    return q->style()->pixelMetric(QStyle::PM_MenuScrollerHeight, nullptr, q);
}
 
// Windows and KDE allow menus to cover the taskbar, while GNOME and macOS
// don't. Torn-off menus are again different
inline bool QMenuPrivate::useFullScreenForPopup() const
{
    return !tornoff && QStylePrivate::useFullScreenForPopup();
}
 
QRect QMenuPrivate::popupGeometry(QScreen *screen) const
{
    Q_Q(const QMenu);
    if (useFullScreenForPopup())
        return screen ? screen->geometry()
                      : QWidgetPrivate::screenGeometry(q);
    return screen ? screen->availableGeometry()
                  : QWidgetPrivate::availableScreenGeometry(q);
}
 
QList<QPointer<QWidget>> QMenuPrivate::calcCausedStack() const
{
    QList<QPointer<QWidget>> ret;
    for(QWidget *widget = causedPopup.widget; widget; ) {
        ret.append(widget);
        if (QTornOffMenu *qtmenu = qobject_cast<QTornOffMenu*>(widget))
            ret += qtmenu->d_func()->causedStack;
        if (QMenu *qmenu = qobject_cast<QMenu*>(widget))
            widget = qmenu->d_func()->causedPopup.widget;
        else
            break;
    }
    return ret;
}
 
bool QMenuPrivate::isContextMenu() const
{
#if QT_CONFIG(menubar)
    return qobject_cast<const QMenuBar *>(topCausedWidget()) == nullptr;
#else
    return true;
#endif
}
 
void QMenuPrivate::updateActionRects() const
{
    updateActionRects(popupGeometry());
}
 
void QMenuPrivate::updateActionRects(const QRect &screen) const
{
    Q_Q(const QMenu);
    if (!itemsDirty)
        return;
 
    q->ensurePolished();
 
    //let's reinitialize the buffer
    actionRects.resize(actions.size());
    actionRects.fill(QRect());
 
    int lastVisibleAction = getLastVisibleAction();
 
    QStyle *style = q->style();
    QStyleOption opt;
    opt.initFrom(q);
    const int hmargin = style->pixelMetric(QStyle::PM_MenuHMargin, &opt, q),
              vmargin = style->pixelMetric(QStyle::PM_MenuVMargin, &opt, q),
              icone = style->pixelMetric(QStyle::PM_SmallIconSize, &opt, q);
    const int fw = style->pixelMetric(QStyle::PM_MenuPanelWidth, &opt, q);
    const int deskFw = style->pixelMetric(QStyle::PM_MenuDesktopFrameWidth, &opt, q);
    const int tearoffHeight = tearoff ? style->pixelMetric(QStyle::PM_MenuTearoffHeight, &opt, q) : 0;
    const int base_y = vmargin + fw + topmargin + (scroll ? scroll->scrollOffset : 0) + tearoffHeight;
    const int column_max_y = screen.height() - 2 * deskFw - (vmargin + bottommargin + fw);
    int max_column_width = 0;
    int y = base_y;
 
    //for compatibility now - will have to refactor this away
    tabWidth = 0;
    maxIconWidth = 0;
    hasCheckableItems = false;
    ncols = 1;
 
    for (int i = 0; i < actions.size(); ++i) {
        QAction *action = actions.at(i);
        if (action->isSeparator() || !action->isVisible() || widgetItems.contains(action))
            continue;
        //..and some members
        hasCheckableItems |= action->isCheckable();
        QIcon is = action->icon();
        if (!is.isNull()) {
            maxIconWidth = qMax<uint>(maxIconWidth, icone + 4);
        }
    }
 
    //calculate size
    QFontMetrics qfm = q->fontMetrics();
    bool previousWasSeparator = true; // this is true to allow removing the leading separators
#if QT_CONFIG(shortcut)
    const bool contextMenu = isContextMenu();
#endif
    for(int i = 0; i <= lastVisibleAction; i++) {
        QAction *action = actions.at(i);
        const bool isSection = action->isSeparator() && (!action->text().isEmpty() || !action->icon().isNull());
        const bool isPlainSeparator = (isSection && !q->style()->styleHint(QStyle::SH_Menu_SupportsSections))
                                   || (action->isSeparator() && !isSection);
 
        if (!action->isVisible() ||
            (collapsibleSeparators && previousWasSeparator && isPlainSeparator))
            continue; // we continue, this action will get an empty QRect
 
        previousWasSeparator = isPlainSeparator;
 
        //let the style modify the above size..
        QStyleOptionMenuItem opt;
        q->initStyleOption(&opt, action);
        const QFontMetrics &fm = opt.fontMetrics;
 
        QSize sz;
        if (QWidget *w = widgetItems.value(action)) {
          sz = w->sizeHint().expandedTo(w->minimumSize()).expandedTo(w->minimumSizeHint()).boundedTo(w->maximumSize());
        } else {
            //calc what I think the size is..
            if (action->isSeparator()) {
                sz = QSize(2, 2);
            } else {
                QString s = action->text();
                qsizetype t = s.indexOf(u'\t');
                if (t != -1) {
                    tabWidth = qMax(int(tabWidth), qfm.horizontalAdvance(s.mid(t+1)));
                    s = s.left(t);
#if QT_CONFIG(shortcut)
                } else if (action->isShortcutVisibleInContextMenu() || !contextMenu) {
                    QKeySequence seq = action->shortcut();
                    if (!seq.isEmpty())
                        tabWidth = qMax(int(tabWidth), qfm.horizontalAdvance(seq.toString(QKeySequence::NativeText)));
#endif
                }
                sz.setWidth(fm.boundingRect(QRect(), Qt::TextSingleLine | Qt::TextShowMnemonic, s).width());
                sz.setHeight(qMax(fm.height(), qfm.height()));
 
                QIcon is = action->icon();
                if (!is.isNull()) {
                    QSize is_sz = QSize(icone, icone);
                    if (is_sz.height() > sz.height())
                        sz.setHeight(is_sz.height());
                }
            }
            sz = style->sizeFromContents(QStyle::CT_MenuItem, &opt, sz, q);
        }
 
 
        if (!sz.isEmpty()) {
            max_column_width = qMax(max_column_width, sz.width());
            //wrapping
            if (!scroll && y + sz.height() > column_max_y) {
                ncols++;
                y = base_y;
            } else {
                y += sz.height();
            }
            //update the item
            actionRects[i] = QRect(0, 0, sz.width(), sz.height());
        }
    }
 
    max_column_width += tabWidth; //finally add in the tab width
    if (!tornoff || scroll) { // exclude non-scrollable tear-off menu since the tear-off menu has a fixed size
        const int sfcMargin = style->sizeFromContents(QStyle::CT_Menu, &opt, QSize(0, 0), q).width();
        const int min_column_width = q->minimumWidth() - (sfcMargin + leftmargin + rightmargin + 2 * (fw + hmargin));
        max_column_width = qMax(min_column_width, max_column_width);
    }
 
    //calculate position
    int x = hmargin + fw + leftmargin;
    y = base_y;
 
    for(int i = 0; i < actions.size(); i++) {
        QRect &rect = actionRects[i];
        if (rect.isNull())
            continue;
        if (!scroll && y + rect.height() > column_max_y) {
            x += max_column_width + hmargin;
            y = base_y;
        }
        rect.translate(x, y);                        //move
        rect.setWidth(max_column_width); //uniform width
 
        //we need to update the widgets geometry
        if (QWidget *widget = widgetItems.value(actions.at(i))) {
            widget->setGeometry(rect);
            widget->setVisible(actions.at(i)->isVisible());
        }
 
        y += rect.height();
    }
    itemsDirty = 0;
}
 
int QMenuPrivate::getLastVisibleAction() const
{
    //let's try to get the last visible action
    int lastVisibleAction = actions.size() - 1;
    for (;lastVisibleAction >= 0; --lastVisibleAction) {
        const QAction *action = actions.at(lastVisibleAction);
        if (action->isVisible()) {
            //removing trailing separators
            if (action->isSeparator() && collapsibleSeparators)
                continue;
            break;
        }
    }
    return lastVisibleAction;
}
 
 
QRect QMenuPrivate::actionRect(QAction *act) const
{
    int index = actions.indexOf(act);
    if (index == -1)
        return QRect();
 
    updateActionRects();
 
    //we found the action
    return actionRects.at(index);
}
 
void QMenuPrivate::hideUpToMenuBar()
{
    Q_Q(QMenu);
    bool fadeMenus = q->style()->styleHint(QStyle::SH_Menu_FadeOutOnHide);
    if (!tornoff) {
        QWidget *caused = causedPopup.widget;
        hideMenu(q); //hide after getting causedPopup
        while(caused) {
#if QT_CONFIG(menubar)
            if (QMenuBar *mb = qobject_cast<QMenuBar*>(caused)) {
                mb->d_func()->setCurrentAction(nullptr);
                mb->d_func()->setKeyboardMode(false);
                caused = nullptr;
            } else
#endif
            if (QMenu *m = qobject_cast<QMenu*>(caused)) {
                caused = m->d_func()->causedPopup.widget;
                if (!m->d_func()->tornoff)
                    hideMenu(m);
                if (!fadeMenus) // Mac doesn't clear the action until after hidden.
                    m->d_func()->setCurrentAction(nullptr);
            } else {                caused = nullptr;
            }
        }
    }
    setCurrentAction(nullptr);
}
 
void QMenuPrivate::hideMenu(QMenu *menu)
{
    if (!menu)
        return;
 
    // See two execs below. They may trigger an akward situation
    // when 'menu' (also known as 'q' or 'this' in the many functions
    // around) to become a dangling pointer if the loop manages
    // to execute 'deferred delete' ... posted while executing
    // this same loop. Not good!
    struct Reposter : QObject
    {
        Reposter(QMenu *menu) : q(menu)
        {
            Q_ASSERT(q);
            q->installEventFilter(this);
        }
        ~Reposter()
        {
            if (deleteLater)
                q->deleteLater();
        }
        bool eventFilter(QObject *obj, QEvent *event) override
        {
            if (obj == q && event->type() == QEvent::DeferredDelete)
                return deleteLater = true;
 
            return QObject::eventFilter(obj, event);
        }
        QMenu *q = nullptr;
        bool deleteLater = false;
    };
 
#if QT_CONFIG(effects)
    QSignalBlocker blocker(menu);
    aboutToHide = true;
    // Flash item which is about to trigger (if any).
    if (menu->style()->styleHint(QStyle::SH_Menu_FlashTriggeredItem)
        && currentAction && currentAction == actionAboutToTrigger
        && menu->actions().contains(currentAction)) {
        QEventLoop eventLoop;
        QAction *activeAction = currentAction;
 
        menu->setActiveAction(nullptr);
        const Reposter deleteDeleteLate(menu);
        QTimer::singleShot(60, &eventLoop, SLOT(quit()));
        eventLoop.exec();
 
        // Select and wait 20 ms.
        menu->setActiveAction(activeAction);
        QTimer::singleShot(20, &eventLoop, SLOT(quit()));
        eventLoop.exec();
    }
 
    aboutToHide = false;
    blocker.unblock();
#endif // QT_CONFIG(effects)
    if (activeMenu == menu)
        activeMenu = nullptr;
    menu->d_func()->causedPopup.action = nullptr;
    menu->close();
    menu->d_func()->causedPopup.widget = nullptr;
}
 
QWindow *QMenuPrivate::transientParentWindow() const
{
    Q_Q(const QMenu);
    if (const QWidget *parent = q->nativeParentWidget()) {
        if (parent->windowHandle())
            return parent->windowHandle();
    }
 
    if (const QWindow *w = q->windowHandle()) {
        if (w->transientParent())
            return w->transientParent();
    }
 
    if (causedPopup.widget) {
        if (const QWidget *w = causedPopup.widget.data()) {
            if (const QWidget *ww = w->window())
                return ww->windowHandle();
        }
    }
 
    return nullptr;
}
 
void QMenuPrivate::popupAction(QAction *action, int delay, bool activateFirst)
{
    Q_Q(QMenu);
    if (action) {
        if (action->isEnabled()) {
            if (!delay)
                q->internalDelayedPopup();
            else if (action->menu() && !action->menu()->isVisible())
                delayState.start(delay, action);
            else if (!action->menu())
                delayState.stop();
            if (activateFirst && action->menu())
                action->menu()->d_func()->setFirstActionActive();
        }
    } else if (QMenu *menu = activeMenu) {  //hide the current item
        hideMenu(menu);
    }
}
 
void QMenuPrivate::setSyncAction()
{
    Q_Q(QMenu);
    QAction *current = currentAction;
    if (current && (!current->isEnabled() || current->menu() || current->isSeparator()))
        current = nullptr;
    for(QWidget *caused = q; caused;) {
        if (QMenu *m = qobject_cast<QMenu*>(caused)) {
            caused = m->d_func()->causedPopup.widget;
            if (m->d_func()->eventLoop)
                m->d_func()->syncAction = current; // synchronous operation
        } else {
            break;
        }
    }
}
 
 
void QMenuPrivate::setFirstActionActive()
{
    Q_Q(QMenu);
    updateActionRects();
    for(int i = 0, saccum = 0; i < actions.size(); i++) {
        const QRect &rect = actionRects.at(i);
        if (rect.isNull())
            continue;
        if (scroll && scroll->scrollFlags & QMenuScroller::ScrollUp) {
            saccum -= rect.height();
            if (saccum > scroll->scrollOffset - scrollerHeight())
                continue;
        }
        QAction *act = actions.at(i);
        if (!act->isSeparator() &&
           (q->style()->styleHint(QStyle::SH_Menu_AllowActiveAndDisabled, nullptr, q)
            || act->isEnabled())) {
            setCurrentAction(act);
            break;
        }
    }
}
 
// popup == -1 means do not popup, 0 means immediately, others mean use a timer
void QMenuPrivate::setCurrentAction(QAction *action, int popup, SelectionReason reason, bool activateFirst)
{
    Q_Q(QMenu);
    tearoffHighlighted = 0;
 
    if (action
            && (action->isSeparator()
                || (!action->isEnabled() && !q->style()->styleHint(QStyle::SH_Menu_AllowActiveAndDisabled, nullptr, q))))
        action = nullptr;
 
    // Reselect the currently active action in case mouse moved over other menu items when
    // moving from sub menu action to sub menu (QTBUG-20094).
    if (reason != SelectedFromKeyboard) {
        if (QMenu *menu = qobject_cast<QMenu*>(causedPopup.widget)) {
            if (causedPopup.action && menu->d_func()->activeMenu == q)
                // Reselect parent menu action only if mouse is over a menu and parent menu action is not already selected (QTBUG-47987)
                if (hasReceievedEnter && menu->d_func()->currentAction != causedPopup.action)
                    menu->d_func()->setCurrentAction(causedPopup.action, 0, reason, false);
        }
    }
 
    if (currentAction)
        q->update(actionRect(currentAction));
 
    QMenu *hideActiveMenu = activeMenu;
    QAction *previousAction = currentAction;
 
    currentAction = action;
    if (action) {
        if (!action->isSeparator()) {
            activateAction(action, QAction::Hover);
            if (popup != -1) {
                // if the menu is visible then activate the required action,
                // otherwise we just mark the action as currentAction
                // and activate it when the menu will be popuped.
                if (q->isVisible())
                    popupAction(currentAction, popup, activateFirst);
            }
            q->update(actionRect(action));
 
            if (reason == SelectedFromKeyboard) {
                QWidget *widget = widgetItems.value(action);
                if (widget) {
                    if (widget->focusPolicy() != Qt::NoFocus)
                        widget->setFocus(Qt::TabFocusReason);
                } else {
                    //when the action has no QWidget, the QMenu itself should
                    // get the focus
                    // Since the menu is a pop-up, it uses the popup reason.
                    if (!q->hasFocus()) {
                        q->setFocus(Qt::PopupFocusReason);
                    }
                }
            }
        }
#if QT_CONFIG(statustip)
    }  else if (previousAction) {
        previousAction->d_func()->showStatusText(topCausedWidget(), QString());
#endif
    }
    if (hideActiveMenu && previousAction != currentAction) {
        if (popup == -1) {
#if QT_CONFIG(effects)
            // kill any running effect
            qFadeEffect(nullptr);
            qScrollEffect(nullptr);
#endif
            hideMenu(hideActiveMenu);
        } else if (!currentAction || !currentAction->menu()) {
            sloppyState.startTimerIfNotRunning();
        }
    }
}
 
void QMenuSloppyState::reset()
{
    m_enabled = false;
    m_first_mouse = true;
    m_init_guard = false;
    m_use_reset_action = true;
    m_uni_dir_discarded_count = 0;
    m_time.stop();
    m_reset_action = nullptr;
    m_origin_action = nullptr;
    m_action_rect = QRect();
    m_previous_point = QPointF();
    if (m_sub_menu) {
        QMenuPrivate::get(m_sub_menu)->sloppyState.m_parent = nullptr;
        m_sub_menu = nullptr;
    }
}
void QMenuSloppyState::enter()
{
    QMenuPrivate *menuPriv = QMenuPrivate::get(m_menu);
 
    if (m_discard_state_when_entering_parent && m_sub_menu == menuPriv->activeMenu) {
        menuPriv->hideMenu(m_sub_menu);
        reset();
    }
    if (m_parent)
        m_parent->childEnter();
}
 
void QMenuSloppyState::childEnter()
{
    stopTimer();
    if (m_parent)
        m_parent->childEnter();
}
 
void QMenuSloppyState::leave()
{
    if (!m_dont_start_time_on_leave) {
        if (m_parent)
            m_parent->childLeave();
        startTimerIfNotRunning();
    }
}
 
void QMenuSloppyState::childLeave()
{
    if (m_enabled && !QMenuPrivate::get(m_menu)->hasReceievedEnter) {
        startTimerIfNotRunning();
        if (m_parent)
            m_parent->childLeave();
    }
}
 
void QMenuSloppyState::setSubMenuPopup(const QRect &actionRect, QAction *resetAction, QMenu *subMenu)
{
    m_enabled = true;
    m_init_guard = true;
    m_use_reset_action = true;
    m_time.stop();
    m_action_rect = actionRect;
    if (m_sub_menu)
        QMenuPrivate::get(m_sub_menu)->sloppyState.m_parent = nullptr;
    m_sub_menu = subMenu;
    QMenuPrivate::get(subMenu)->sloppyState.m_parent = this;
    m_reset_action = resetAction;
    m_origin_action = resetAction;
}
 
bool QMenuSloppyState::hasParentActiveDelayTimer() const
{
    return m_parent && m_parent->m_menu && QMenuPrivate::get(m_parent->m_menu)->delayState.timer.isActive();
}
 
class ResetOnDestroy
{
public:
    ResetOnDestroy(QMenuSloppyState *sloppyState, bool *guard)
        : toReset(sloppyState)
        , guard(guard)
    {
        *guard = false;
    }
 
    ~ResetOnDestroy()
    {
        if (!*guard)
            toReset->reset();
    }
 
    QMenuSloppyState *toReset;
    bool *guard;
};
 
void QMenuSloppyState::timeout()
{
    QMenuPrivate *menu_priv = QMenuPrivate::get(m_menu);
 
    bool reallyHasMouse = menu_priv->hasReceievedEnter;
    if (!reallyHasMouse) {
        // Check whether the menu really has a mouse, because only active popup
        // menu gets the enter/leave events. Currently Cocoa is an exception.
        const QPoint lastCursorPos = QGuiApplicationPrivate::lastCursorPosition.toPoint();
        reallyHasMouse = m_menu->frameGeometry().contains(lastCursorPos);
    }
 
    if (menu_priv->currentAction == m_reset_action
            && reallyHasMouse
            && (menu_priv->currentAction
                && menu_priv->currentAction->menu() == menu_priv->activeMenu)) {
        return;
    }
 
    ResetOnDestroy resetState(this, &m_init_guard);
 
    if (hasParentActiveDelayTimer() || !m_menu->isVisible())
        return;
 
    if (m_sub_menu)
        menu_priv->hideMenu(m_sub_menu);
 
    if (reallyHasMouse) {
        if (m_use_reset_action)
            menu_priv->setCurrentAction(m_reset_action, 0);
    } else {
        menu_priv->setCurrentAction(nullptr, 0);
    }
}
 
//return the top causedPopup.widget that is not a QMenu
QWidget *QMenuPrivate::topCausedWidget() const
{
    QWidget* top = causedPopup.widget;
    while (QMenu* m = qobject_cast<QMenu *>(top))
        top = m->d_func()->causedPopup.widget;
    return top;
}
 
QAction *QMenuPrivate::actionAt(QPoint p) const
{
    if (!rect().contains(p))     //sanity check
       return nullptr;
 
    for(int i = 0; i < actionRects.size(); i++) {
        if (actionRects.at(i).contains(p))
            return actions.at(i);
    }
    return nullptr;
}
 
void QMenuPrivate::setOverrideMenuAction(QAction *a)
{
    Q_Q(QMenu);
    QObject::disconnect(menuAction, SIGNAL(destroyed()), q, SLOT(_q_overrideMenuActionDestroyed()));
    if (a) {
        menuAction = a;
        QObject::connect(a, SIGNAL(destroyed()), q, SLOT(_q_overrideMenuActionDestroyed()));
    } else { //we revert back to the default action created by the QMenu itself
        menuAction = defaultMenuAction;
    }
}
 
void QMenuPrivate::_q_overrideMenuActionDestroyed()
{
    menuAction=defaultMenuAction;
}
 
void QMenuPrivate::updateLayoutDirection()
{
    Q_Q(QMenu);
    //we need to mimic the cause of the popup's layout direction
    //to allow setting it on a mainwindow for example
    //we call setLayoutDirection_helper to not overwrite a user-defined value
    if (!q->testAttribute(Qt::WA_SetLayoutDirection)) {
        if (QWidget *w = causedPopup.widget)
            setLayoutDirection_helper(w->layoutDirection());
        else if (QWidget *w = q->parentWidget())
            setLayoutDirection_helper(w->layoutDirection());
        else
            setLayoutDirection_helper(QGuiApplication::layoutDirection());
    }
}
 
void QMenuPrivate::drawScroller(QPainter *painter, QMenuPrivate::ScrollerTearOffItem::Type type, const QRect &rect)
{
    if (!painter || rect.isEmpty())
        return;
 
    if (!scroll || !(scroll->scrollFlags & (QMenuPrivate::QMenuScroller::ScrollUp
                                         | QMenuPrivate::QMenuScroller::ScrollDown)))
        return;
 
    Q_Q(QMenu);
    QStyleOptionMenuItem menuOpt;
    menuOpt.initFrom(q);
    menuOpt.state = QStyle::State_None;
    menuOpt.checkType = QStyleOptionMenuItem::NotCheckable;
    menuOpt.maxIconWidth = 0;
    menuOpt.reservedShortcutWidth = 0;
    menuOpt.rect = rect;
    menuOpt.menuItemType = QStyleOptionMenuItem::Scroller;
    menuOpt.state |= QStyle::State_Enabled;
    if (type == QMenuPrivate::ScrollerTearOffItem::ScrollDown)
        menuOpt.state |= QStyle::State_DownArrow;
 
    painter->setClipRect(menuOpt.rect);
    q->style()->drawControl(QStyle::CE_MenuScroller, &menuOpt, painter, q);
}
 
void QMenuPrivate::drawTearOff(QPainter *painter, const QRect &rect)
{
    if (!painter || rect.isEmpty())
        return;
 
    if (!tearoff)
        return;
 
    Q_Q(QMenu);
    QStyleOptionMenuItem menuOpt;
    menuOpt.initFrom(q);
    menuOpt.state = QStyle::State_None;
    menuOpt.checkType = QStyleOptionMenuItem::NotCheckable;
    menuOpt.maxIconWidth = 0;
    menuOpt.reservedShortcutWidth = 0;
    menuOpt.rect = rect;
    menuOpt.menuItemType = QStyleOptionMenuItem::TearOff;
    if (tearoffHighlighted)
        menuOpt.state |= QStyle::State_Selected;
 
    painter->setClipRect(menuOpt.rect);
    q->style()->drawControl(QStyle::CE_MenuTearoff, &menuOpt, painter, q);
}
 
QRect QMenuPrivate::rect() const
{
    Q_Q(const QMenu);
    QStyle *style = q->style();
    QStyleOption opt(0);
    opt.initFrom(q);
    const int hmargin = style->pixelMetric(QStyle::PM_MenuHMargin, &opt, q);
    const int vmargin = style->pixelMetric(QStyle::PM_MenuVMargin, &opt, q);
    const int fw = style->pixelMetric(QStyle::PM_MenuPanelWidth, &opt, q);
    return (q->rect().adjusted(hmargin + fw + leftmargin, vmargin + fw + topmargin,
                               -(hmargin + fw + rightmargin), -(vmargin + fw + bottommargin)));
}
 
QMenuPrivate::ScrollerTearOffItem::ScrollerTearOffItem(QMenuPrivate::ScrollerTearOffItem::Type type, QMenuPrivate *mPrivate, QWidget *parent, Qt::WindowFlags f)
    : QWidget(parent, f), menuPrivate(mPrivate), scrollType(type)
{
    if (parent)
        setMouseTracking(parent->style()->styleHint(QStyle::SH_Menu_MouseTracking, nullptr, parent));
}
 
void QMenuPrivate::ScrollerTearOffItem::paintEvent(QPaintEvent *e)
{
    if (!e->rect().intersects(rect()))
        return;
 
    QPainter p(this);
    QWidget *parent = parentWidget();
 
    //paint scroll up / down arrows
    menuPrivate->drawScroller(&p, scrollType, QRect(0, 0, width(), menuPrivate->scrollerHeight()));
    //paint the tear off
    if (scrollType == QMenuPrivate::ScrollerTearOffItem::ScrollUp) {
        QRect rect(0, 0, width(), parent->style()->pixelMetric(QStyle::PM_MenuTearoffHeight, nullptr, parent));
        if (menuPrivate->scroll && menuPrivate->scroll->scrollFlags & QMenuPrivate::QMenuScroller::ScrollUp)
            rect.translate(0, menuPrivate->scrollerHeight());
        menuPrivate->drawTearOff(&p, rect);
    }
}
 
void QMenuPrivate::ScrollerTearOffItem::updateScrollerRects(const QRect &rect)
{
    if (rect.isEmpty())
        setVisible(false);
    else {
        setGeometry(rect);
        raise();
        setVisible(true);
    }
}
 
 
QAction *QMenu::menuAction() const
{
    return d_func()->menuAction;
}
 
QString QMenu::title() const
{
    return d_func()->menuAction->text();
}
 
void QMenu::setTitle(const QString &text)
{
    d_func()->menuAction->setText(text);
}
 
QIcon QMenu::icon() const
{
    return d_func()->menuAction->icon();
}
 
void QMenu::setIcon(const QIcon &icon)
{
    d_func()->menuAction->setIcon(icon);
}
 
 
//actually performs the scrolling
void QMenuPrivate::scrollMenu(QAction *action, QMenuScroller::ScrollLocation location, bool active)
{
    Q_Q(QMenu);
    if (!scroll || !scroll->scrollFlags)
        return;
    updateActionRects();
    int newOffset = 0;
    const int topScroll = (scroll->scrollFlags & QMenuScroller::ScrollUp)   ? scrollerHeight() : 0;
    const int botScroll = (scroll->scrollFlags & QMenuScroller::ScrollDown) ? scrollerHeight() : 0;
    const int vmargin = q->style()->pixelMetric(QStyle::PM_MenuVMargin, nullptr, q);
    const int fw = q->style()->pixelMetric(QStyle::PM_MenuPanelWidth, nullptr, q);
 
    if (location == QMenuScroller::ScrollTop) {
        for(int i = 0, saccum = 0; i < actions.size(); i++) {
            if (actions.at(i) == action) {
                newOffset = topScroll - saccum;
                break;
            }
            saccum += actionRects.at(i).height();
        }
    } else {
        for(int i = 0, saccum = 0; i < actions.size(); i++) {
            saccum += actionRects.at(i).height();
            if (actions.at(i) == action) {
                if (location == QMenuScroller::ScrollCenter)
                    newOffset = ((q->height() / 2) - botScroll) - (saccum - topScroll);
                else
                    newOffset = (q->height() - botScroll) - saccum;
                break;
            }
        }
        if (newOffset)
            newOffset -= fw * 2;
    }
 
    //figure out which scroll flags
    uint newScrollFlags = QMenuScroller::ScrollNone;
    if (newOffset < 0) //easy and cheap one
        newScrollFlags |= QMenuScroller::ScrollUp;
    int saccum = newOffset;
    for(int i = 0; i < actionRects.size(); i++) {
        saccum += actionRects.at(i).height();
        if (saccum > q->height()) {
            newScrollFlags |= QMenuScroller::ScrollDown;
            break;
        }
    }
 
    if (!(newScrollFlags & QMenuScroller::ScrollDown) && (scroll->scrollFlags & QMenuScroller::ScrollDown)) {
        newOffset = q->height() - (saccum - newOffset) - fw*2 - vmargin - topmargin - bottommargin;    //last item at bottom
        if (tearoff)
            newOffset -= q->style()->pixelMetric(QStyle::PM_MenuTearoffHeight, nullptr, q);
    }
 
    if (!(newScrollFlags & QMenuScroller::ScrollUp) && (scroll->scrollFlags & QMenuScroller::ScrollUp)) {
        newOffset = 0;  //first item at top
    }
 
    if (newScrollFlags & QMenuScroller::ScrollUp)
        newOffset -= vmargin;
 
    QRect screen = popupGeometry();
    const int desktopFrame = q->style()->pixelMetric(QStyle::PM_MenuDesktopFrameWidth, nullptr, q);
    if (q->height() < screen.height()-(desktopFrame*2)-1) {
        QRect geom = q->geometry();
        if (newOffset > scroll->scrollOffset && (scroll->scrollFlags & newScrollFlags & QMenuScroller::ScrollUp)) { //scroll up
            const int newHeight = geom.height()-(newOffset-scroll->scrollOffset);
            if (newHeight > geom.height())
                geom.setHeight(newHeight);
        } else if (scroll->scrollFlags & newScrollFlags & QMenuScroller::ScrollDown) {
            int newTop = geom.top() + (newOffset-scroll->scrollOffset);
            if (newTop < desktopFrame+screen.top())
                newTop = desktopFrame+screen.top();
            if (newTop < geom.top()) {
                geom.setTop(newTop);
                newOffset = 0;
                newScrollFlags &= ~QMenuScroller::ScrollUp;
            }
        }
        if (geom.bottom() > screen.bottom() - desktopFrame)
            geom.setBottom(screen.bottom() - desktopFrame);
        if (geom.top() < desktopFrame+screen.top())
            geom.setTop(desktopFrame+screen.top());
        if (geom != q->geometry()) {
#if 0
            if (newScrollFlags & QMenuScroller::ScrollDown &&
               q->geometry().top() - geom.top() >= -newOffset)
                newScrollFlags &= ~QMenuScroller::ScrollDown;
#endif
            q->setGeometry(geom);
        }
    }
 
    //actually update flags
    const int delta = qMin(0, newOffset) - scroll->scrollOffset; //make sure the new offset is always negative
    if (!itemsDirty && delta) {
        //we've scrolled so we need to update the action rects
        for (int i = 0; i < actionRects.size(); ++i) {
            QRect &current = actionRects[i];
            current.moveTop(current.top() + delta);
 
            //we need to update the widgets geometry
            if (QWidget *w = widgetItems.value(actions.at(i)))
                w->setGeometry(current);
        }
    }
    scroll->scrollOffset += delta;
    scroll->scrollFlags = newScrollFlags;
    if (active)
        setCurrentAction(action);
 
    q->update();     //issue an update so we see all the new state..
}
 
void QMenuPrivate::scrollMenu(QMenuScroller::ScrollLocation location, bool active)
{
    Q_Q(QMenu);
    updateActionRects();
    if (location == QMenuScroller::ScrollBottom) {
        for(int i = actions.size()-1; i >= 0; --i) {
            QAction *act = actions.at(i);
            if (actionRects.at(i).isNull())
                continue;
            if (!act->isSeparator() &&
                (q->style()->styleHint(QStyle::SH_Menu_AllowActiveAndDisabled, nullptr, q)
                 || act->isEnabled())) {
                if (scroll->scrollFlags & QMenuPrivate::QMenuScroller::ScrollDown)
                    scrollMenu(act, QMenuPrivate::QMenuScroller::ScrollBottom, active);
                else if (active)
                    setCurrentAction(act, /*popup*/-1, QMenuPrivate::SelectedFromKeyboard);
                break;
            }
        }
    } else if (location == QMenuScroller::ScrollTop) {
        for(int i = 0; i < actions.size(); ++i) {
            QAction *act = actions.at(i);
            if (actionRects.at(i).isNull())
                continue;
            if (!act->isSeparator() &&
                (q->style()->styleHint(QStyle::SH_Menu_AllowActiveAndDisabled, nullptr, q)
                 || act->isEnabled())) {
                if (scroll->scrollFlags & QMenuPrivate::QMenuScroller::ScrollUp)
                    scrollMenu(act, QMenuPrivate::QMenuScroller::ScrollTop, active);
                else if (active)
                    setCurrentAction(act, /*popup*/-1, QMenuPrivate::SelectedFromKeyboard);
                break;
            }
        }
    }
}
 
//only directional
void QMenuPrivate::scrollMenu(QMenuScroller::ScrollDirection direction, bool page, bool active)
{
    Q_Q(QMenu);
    if (!scroll || !(scroll->scrollFlags & direction)) //not really possible...
        return;
    updateActionRects();
    const int topScroll = (scroll->scrollFlags & QMenuScroller::ScrollUp)   ? scrollerHeight() : 0;
    const int botScroll = (scroll->scrollFlags & QMenuScroller::ScrollDown) ? scrollerHeight() : 0;
    const int vmargin = q->style()->pixelMetric(QStyle::PM_MenuVMargin, nullptr, q);
    const int fw = q->style()->pixelMetric(QStyle::PM_MenuPanelWidth, nullptr, q);
    const int offset = topScroll ? topScroll-vmargin : 0;
    if (direction == QMenuScroller::ScrollUp) {
        for(int i = 0, saccum = 0; i < actions.size(); i++) {
            saccum -= actionRects.at(i).height();
            if (saccum <= scroll->scrollOffset-offset) {
                scrollMenu(actions.at(i), page ? QMenuScroller::ScrollBottom : QMenuScroller::ScrollTop, active);
                break;
            }
        }
    } else if (direction == QMenuScroller::ScrollDown) {
        bool scrolled = false;
        for(int i = 0, saccum = 0; i < actions.size(); i++) {
            const int iHeight = actionRects.at(i).height();
            saccum -= iHeight;
            if (saccum <= scroll->scrollOffset-offset) {
                const int scrollerArea = q->height() - botScroll - fw*2;
                int visible = (scroll->scrollOffset-offset) - saccum;
                for(i++ ; i < actions.size(); i++) {
                    visible += actionRects.at(i).height();
                    if (visible > scrollerArea - topScroll) {
                        scrolled = true;
                        scrollMenu(actions.at(i), page ? QMenuScroller::ScrollTop : QMenuScroller::ScrollBottom, active);
                        break;
                    }
                }
                break;
            }
        }
        if (!scrolled) {
            scroll->scrollFlags &= ~QMenuScroller::ScrollDown;
            q->update();
        }
    }
}
 
/* This is poor-mans eventfilters. This avoids the use of
   eventFilter (which can be nasty for users of QMenuBar's). */
bool QMenuPrivate::mouseEventTaken(QMouseEvent *e)
{
    Q_Q(QMenu);
    QPoint pos = q->mapFromGlobal(e->globalPosition().toPoint());
 
    QStyle *style = q->style();
    QStyleOption opt(0);
    opt.initFrom(q);
    const int hmargin = style->pixelMetric(QStyle::PM_MenuHMargin, &opt, q);
    const int vmargin = style->pixelMetric(QStyle::PM_MenuVMargin, &opt, q);
    const int fw = style->pixelMetric(QStyle::PM_MenuPanelWidth, &opt, q);
 
    if (scroll && !activeMenu) { //let the scroller "steal" the event
        bool isScroll = false;
        if (pos.x() >= 0 && pos.x() < q->width()) {
        for (int dir = QMenuScroller::ScrollUp; dir <= QMenuScroller::ScrollDown; dir = dir << 1) {
                if (scroll->scrollFlags & dir) {
                    if (dir == QMenuScroller::ScrollUp)
                        isScroll = (pos.y() <= scrollerHeight() + fw + vmargin + topmargin);
                    else if (dir == QMenuScroller::ScrollDown)
                        isScroll = (pos.y() >= q->height() - scrollerHeight() - fw - vmargin - bottommargin);
                    if (isScroll) {
                        scroll->scrollDirection = dir;
                        break;
                    }
                }
            }
        }
        if (isScroll) {
            scroll->scrollTimer.start(50, q);
            return true;
        } else {
            scroll->scrollTimer.stop();
        }
    }
 
    if (tearoff) { //let the tear off thingie "steal" the event..
        QRect tearRect(leftmargin + hmargin + fw, topmargin + vmargin + fw, q->width() - fw * 2 - hmargin * 2 -leftmargin - rightmargin,
                       q->style()->pixelMetric(QStyle::PM_MenuTearoffHeight, &opt, q));
        if (scroll && scroll->scrollFlags & QMenuPrivate::QMenuScroller::ScrollUp)
            tearRect.translate(0, scrollerHeight());
        q->update(tearRect);
        if (tearRect.contains(pos) && hasMouseMoved(e->globalPosition().toPoint())) {
            setCurrentAction(nullptr);
            tearoffHighlighted = 1;
            if (e->type() == QEvent::MouseButtonRelease) {
                if (!tornPopup)
                    tornPopup = new QTornOffMenu(q);
                tornPopup->setGeometry(q->geometry());
                tornPopup->show();
                hideUpToMenuBar();
            }
            return true;
        }
        tearoffHighlighted = 0;
    }
 
    if (q->frameGeometry().contains(e->globalPosition().toPoint()))
        return false; //otherwise if the event is in our rect we want it..
 
    for(QWidget *caused = causedPopup.widget; caused;) {
        bool passOnEvent = false;
        QWidget *next_widget = nullptr;
        QPointF cpos = caused->mapFromGlobal(e->globalPosition());
#if QT_CONFIG(menubar)
        if (QMenuBar *mb = qobject_cast<QMenuBar*>(caused)) {
            passOnEvent = mb->rect().contains(cpos.toPoint());
        } else
#endif
        if (QMenu *m = qobject_cast<QMenu*>(caused)) {
            passOnEvent = m->rect().contains(cpos.toPoint());
            next_widget = m->d_func()->causedPopup.widget;
        }
        if (passOnEvent) {
            if (e->type() != QEvent::MouseButtonRelease || mouseDown == caused) {
                QMouseEvent new_e(e->type(), cpos, caused->mapTo(caused->topLevelWidget(), cpos), e->globalPosition(),
                                  e->button(), e->buttons(), e->modifiers(),
                                  e->source(), e->pointingDevice());
                QCoreApplication::sendEvent(caused, &new_e);
                return true;
            }
        }
        caused = next_widget;
        if (!caused)
            sloppyState.leave(); // Start timers
    }
    return false;
}
 
void QMenuPrivate::activateCausedStack(const QList<QPointer<QWidget>> &causedStack, QAction *action,
                                       QAction::ActionEvent action_e, bool self)
{
    Q_Q(QMenu);
    // can't use QBoolBlocker here
    const bool activationRecursionGuardReset = activationRecursionGuard;
    activationRecursionGuard = true;
    QPointer<QMenu> guard(q);
    if (self)
        action->activate(action_e);
    if (!guard)
        return;
    auto boolBlocker = qScopeGuard([this, activationRecursionGuardReset]{
        activationRecursionGuard = activationRecursionGuardReset;
    });
 
    for(int i = 0; i < causedStack.size(); ++i) {
        QPointer<QWidget> widget = causedStack.at(i);
        if (!widget)
            continue;
        //fire
        if (QMenu *qmenu = qobject_cast<QMenu*>(widget)) {
            widget = qmenu->d_func()->causedPopup.widget;
            if (action_e == QAction::Trigger) {
                emit qmenu->triggered(action);
           } else if (action_e == QAction::Hover) {
                emit qmenu->hovered(action);
            }
#if QT_CONFIG(menubar)
        } else if (QMenuBar *qmenubar = qobject_cast<QMenuBar*>(widget)) {
            if (action_e == QAction::Trigger) {
                emit qmenubar->triggered(action);
            } else if (action_e == QAction::Hover) {
                emit qmenubar->hovered(action);
            }
            break; //nothing more..
#endif
        }
    }
}
 
void QMenuPrivate::activateAction(QAction *action, QAction::ActionEvent action_e, bool self)
{
    Q_Q(QMenu);
#if QT_CONFIG(whatsthis)
    bool inWhatsThisMode = QWhatsThis::inWhatsThisMode();
#endif
    if (!action || !q->isEnabled()
        || (action_e == QAction::Trigger
#if QT_CONFIG(whatsthis)
            && !inWhatsThisMode
#endif
            && (action->isSeparator() ||!action->isEnabled())))
        return;
 
    /* I have to save the caused stack here because it will be undone after popup execution (ie in the hide).
       Then I iterate over the list to actually send the events. --Sam
    */
    const QList<QPointer<QWidget>> causedStack = calcCausedStack();
    if (action_e == QAction::Trigger) {
#if QT_CONFIG(whatsthis)
        if (!inWhatsThisMode)
            actionAboutToTrigger = action;
#endif
 
        if (q->testAttribute(Qt::WA_DontShowOnScreen)) {
            hideUpToMenuBar();
        } else {
            for(QWidget *widget = QApplication::activePopupWidget(); widget; ) {
                if (QMenu *qmenu = qobject_cast<QMenu*>(widget)) {
                    if (qmenu == q)
                        hideUpToMenuBar();
                    widget = qmenu->d_func()->causedPopup.widget;
                } else {
                    break;
                }
            }
        }
 
#if QT_CONFIG(whatsthis)
        if (inWhatsThisMode) {
            QString s = action->whatsThis();
            if (s.isEmpty())
                s = whatsThis;
            QWhatsThis::showText(q->mapToGlobal(actionRect(action).center()), s, q);
            return;
        }
#endif
    }
 
    QPointer<QMenu> thisGuard(q);
    activateCausedStack(causedStack, action, action_e, self);
    if (!thisGuard)
        return;
 
    if (action_e == QAction::Hover) {
#if QT_CONFIG(accessibility)
        if (QAccessible::isActive()) {
            int actionIndex = indexOf(action);
            QAccessibleEvent focusEvent(q, QAccessible::Focus);
            focusEvent.setChild(actionIndex);
            QAccessible::updateAccessibility(&focusEvent);
        }
#endif
        action->showStatusText(topCausedWidget());
    } else {
        actionAboutToTrigger = nullptr;
    }
}
 
void QMenuPrivate::_q_actionTriggered()
{
    Q_Q(QMenu);
    if (QAction *action = qobject_cast<QAction *>(q->sender())) {
        QPointer<QAction> actionGuard = action;
        if (platformMenu && widgetItems.value(action))
            platformMenu->dismiss();
        emit q->triggered(action);
        if (!activationRecursionGuard && actionGuard) {
            //in case the action has not been activated by the mouse
            //we check the parent hierarchy
            QList<QPointer<QWidget>> list;
            for(QWidget *widget = q->parentWidget(); widget; ) {
                if (qobject_cast<QMenu*>(widget)
#if QT_CONFIG(menubar)
                    || qobject_cast<QMenuBar*>(widget)
#endif
                    ) {
                    list.append(widget);
                    widget = widget->parentWidget();
                } else {
                    break;
                }
            }
            activateCausedStack(list, action, QAction::Trigger, false);
            // if a widget action fires, we need to hide the menu explicitly
            if (qobject_cast<QWidgetAction*>(action))
                hideUpToMenuBar();
        }
    }
}
 
void QMenuPrivate::_q_actionHovered()
{
    Q_Q(QMenu);
    if (QAction * action = qobject_cast<QAction *>(q->sender())) {
        emit q->hovered(action);
    }
}
 
void QMenuPrivate::_q_platformMenuAboutToShow()
{
    Q_Q(QMenu);
 
    emit q->aboutToShow();
 
#ifdef Q_OS_MACOS
    if (platformMenu) {
        const auto actions = q->actions();
        for (QAction *action : actions) {
            if (QWidget *widget = widgetItems.value(action))
                if (widget->parent() == q) {
                    QPlatformMenuItem *menuItem = platformMenu->menuItemForTag(reinterpret_cast<quintptr>(action));
                    moveWidgetToPlatformItem(widget, menuItem);
                    platformMenu->syncMenuItem(menuItem);
                }
        }
    }
#endif
}
 
bool QMenuPrivate::hasMouseMoved(const QPoint &globalPos)
{
    //determines if the mouse has moved (ie its initial position has
    //changed by more than QApplication::startDragDistance()
    //or if there were at least 6 mouse motions)
    return motions > 6 ||
        QApplication::startDragDistance() < (mousePopupPos - globalPos).manhattanLength();
}
 
 
void QMenu::initStyleOption(QStyleOptionMenuItem *option, const QAction *action) const
{
    if (!option || !action)
        return;
 
    Q_D(const QMenu);
    option->initFrom(this);
    option->palette = palette();
    option->state = QStyle::State_None;
 
    if (window()->isActiveWindow())
        option->state |= QStyle::State_Active;
    if (isEnabled() && action->isEnabled()
            && (!action->menu() || action->menu()->isEnabled()))
        option->state |= QStyle::State_Enabled;
    else
        option->palette.setCurrentColorGroup(QPalette::Disabled);
 
    option->font = action->font().resolve(font());
    option->fontMetrics = QFontMetrics(option->font);
 
    if (d->currentAction && d->currentAction == action && !d->currentAction->isSeparator()) {
        option->state |= QStyle::State_Selected
                     | (QMenuPrivate::mouseDown ? QStyle::State_Sunken : QStyle::State_None);
    }
 
    option->menuHasCheckableItems = d->hasCheckableItems;
    if (!action->isCheckable()) {
        option->checkType = QStyleOptionMenuItem::NotCheckable;
    } else {
        option->checkType = (action->actionGroup() && action->actionGroup()->isExclusive())
                            ? QStyleOptionMenuItem::Exclusive : QStyleOptionMenuItem::NonExclusive;
        option->checked = action->isChecked();
    }
    if (action->menu())
        option->menuItemType = QStyleOptionMenuItem::SubMenu;
    else if (action->isSeparator())
        option->menuItemType = QStyleOptionMenuItem::Separator;
    else if (d->defaultAction == action)
        option->menuItemType = QStyleOptionMenuItem::DefaultItem;
    else
        option->menuItemType = QStyleOptionMenuItem::Normal;
    if (action->isIconVisibleInMenu())
        option->icon = action->icon();
    QString textAndAccel = action->text();
#ifndef QT_NO_SHORTCUT
    if ((action->isShortcutVisibleInContextMenu() || !d->isContextMenu())
            && textAndAccel.indexOf(u'\t') == -1) {
        QKeySequence seq = action->shortcut();
        if (!seq.isEmpty())
            textAndAccel += u'\t' + seq.toString(QKeySequence::NativeText);
    }
#endif
    option->text = textAndAccel;
    option->reservedShortcutWidth = d->tabWidth;
    option->maxIconWidth = d->maxIconWidth;
    option->menuRect = rect();
}
 
QMenu::QMenu(QWidget *parent)
    : QWidget(*new QMenuPrivate, parent, Qt::Popup)
{
    Q_D(QMenu);
    d->init();
}
 
QMenu::QMenu(const QString &title, QWidget *parent)
    : QMenu(parent)
{
    Q_D(QMenu);
    d->menuAction->setText(title);
}
 
QMenu::QMenu(QMenuPrivate &dd, QWidget *parent)
    : QWidget(dd, parent, Qt::Popup)
{
    Q_D(QMenu);
    d->init();
}
 
QMenu::~QMenu()
{
    Q_D(QMenu);
    if (!d->widgetItems.isEmpty()) {  // avoid detach on shared null hash
        QHash<QAction *, QWidget *>::iterator it = d->widgetItems.begin();
        for (; it != d->widgetItems.end(); ++it) {
            if (QWidget *widget = it.value()) {
                QWidgetAction *action = static_cast<QWidgetAction *>(it.key());
                action->releaseWidget(widget);
                *it = 0;
            }
        }
    }
 
    if (d->eventLoop)
        d->eventLoop->exit();
    hideTearOffMenu();
}
 
#if QT_DEPRECATED_SINCE(6, 4)
#if QT_CONFIG(shortcut)
QAction *QMenu::addAction(const QString &text, const QObject *receiver, const char* member, const QKeySequence &shortcut)
{
    return QWidget::addAction(text, shortcut, receiver, member);
}
#endif
 
#if QT_CONFIG(shortcut)
QAction *QMenu::addAction(const QIcon &icon, const QString &text, const QObject *receiver,
                          const char* member, const QKeySequence &shortcut)
{
    QAction *action = new QAction(icon, text, this);
    action->setShortcut(shortcut);
    QObject::connect(action, SIGNAL(triggered(bool)), receiver, member);
    addAction(action);
    return action;
}
#endif
#endif // QT_DEPRECATED_SINCE(6, 4)
 
QAction *QMenu::addMenu(QMenu *menu)
{
    QAction *action = menu->menuAction();
    addAction(action);
    return action;
}
 
QMenu *QMenu::addMenu(const QString &title)
{
    QMenu *menu = new QMenu(title, this);
    addAction(menu->menuAction());
    return menu;
}
 
QMenu *QMenu::addMenu(const QIcon &icon, const QString &title)
{
    QMenu *menu = new QMenu(title, this);
    menu->setIcon(icon);
    addAction(menu->menuAction());
    return menu;
}
 
QAction *QMenu::addSeparator()
{
    QAction *action = new QAction(this);
    action->setSeparator(true);
    addAction(action);
    return action;
}
 
QAction *QMenu::addSection(const QString &text)
{
    QAction *action = new QAction(text, this);
    action->setSeparator(true);
    addAction(action);
    return action;
}
 
QAction *QMenu::addSection(const QIcon &icon, const QString &text)
{
    QAction *action = new QAction(icon, text, this);
    action->setSeparator(true);
    addAction(action);
    return action;
}
 
QAction *QMenu::insertMenu(QAction *before, QMenu *menu)
{
    QAction *action = menu->menuAction();
    insertAction(before, action);
    return action;
}
 
QAction *QMenu::insertSeparator(QAction *before)
{
    QAction *action = new QAction(this);
    action->setSeparator(true);
    insertAction(before, action);
    return action;
}
 
QAction *QMenu::insertSection(QAction *before, const QString &text)
{
    QAction *action = new QAction(text, this);
    action->setSeparator(true);
    insertAction(before, action);
    return action;
}
 
QAction *QMenu::insertSection(QAction *before, const QIcon &icon, const QString &text)
{
    QAction *action = new QAction(icon, text, this);
    action->setSeparator(true);
    insertAction(before, action);
    return action;
}
 
void QMenu::setDefaultAction(QAction *act)
{
    d_func()->defaultAction = act;
}
 
QAction *QMenu::defaultAction() const
{
    return d_func()->defaultAction;
}
 
void QMenu::setTearOffEnabled(bool b)
{
    Q_D(QMenu);
    if (d->tearoff == b)
        return;
    if (!b)
        hideTearOffMenu();
    d->tearoff = b;
 
    d->itemsDirty = true;
    if (isVisible())
        resize(sizeHint());
}
 
bool QMenu::isTearOffEnabled() const
{
    return d_func()->tearoff;
}
 
bool QMenu::isTearOffMenuVisible() const
{
    if (d_func()->tornPopup)
        return d_func()->tornPopup->isVisible();
    return false;
}
 
void QMenu::showTearOffMenu(const QPoint &pos)
{
    Q_D(QMenu);
    if (!d->tornPopup)
        d->tornPopup = new QTornOffMenu(this);
    const QSize &s = sizeHint();
    d->tornPopup->setGeometry(pos.x(), pos.y(), s.width(), s.height());
    d->tornPopup->show();
}
 
void QMenu::showTearOffMenu()
{
    showTearOffMenu(QCursor::pos());
}
 
void QMenu::hideTearOffMenu()
{
    Q_D(QMenu);
    if (d->tornPopup) {
        d->tornPopup->close();
        // QTornOffMenu sets WA_DeleteOnClose, so we
        // should consider the torn-off menu deleted.
        // This way showTearOffMenu() will not try to
        // reuse the dying torn-off menu.
        d->tornPopup = nullptr;
    }
}
 
 
void QMenu::setActiveAction(QAction *act)
{
    Q_D(QMenu);
    d->setCurrentAction(act, 0);
    if (d->scroll && act)
        d->scrollMenu(act, QMenuPrivate::QMenuScroller::ScrollCenter);
}
 
 
QAction *QMenu::activeAction() const
{
    return d_func()->currentAction;
}
 
bool QMenu::isEmpty() const
{
    bool ret = true;
    for(int i = 0; ret && i < actions().size(); ++i) {
        const QAction *action = actions().at(i);
        if (!action->isSeparator() && action->isVisible()) {
            ret = false;
        }
    }
    return ret;
}
 
void QMenu::clear()
{
    QList<QAction*> acts = actions();
 
    for(int i = 0; i < acts.size(); i++) {
        removeAction(acts[i]);
        if (acts[i]->parent() == this && acts[i]->d_func()->associatedObjects.isEmpty())
            delete acts[i];
    }
}
 
int QMenu::columnCount() const
{
    return d_func()->ncols;
}
 
QAction *QMenu::actionAt(const QPoint &pt) const
{
    if (QAction *ret = d_func()->actionAt(pt))
        return ret;
    return nullptr;
}
 
QRect QMenu::actionGeometry(QAction *act) const
{
    return d_func()->actionRect(act);
}
 
QSize QMenu::sizeHint() const
{
    Q_D(const QMenu);
    d->updateActionRects();
 
    QSize s;
    for (int i = 0; i < d->actionRects.size(); ++i) {
        const QRect &rect = d->actionRects.at(i);
        if (rect.isNull())
            continue;
        if (rect.bottom() >= s.height())
            s.setHeight(rect.y() + rect.height());
        if (rect.right() >= s.width())
            s.setWidth(rect.x() + rect.width());
    }
    // Note that the action rects calculated above already include
    // the top and left margins, so we only need to add margins for
    // the bottom and right.
    QStyleOption opt(0);
    opt.initFrom(this);
    const int fw = style()->pixelMetric(QStyle::PM_MenuPanelWidth, &opt, this);
    s.rwidth() += style()->pixelMetric(QStyle::PM_MenuHMargin, &opt, this) + fw + d->rightmargin;
    s.rheight() += style()->pixelMetric(QStyle::PM_MenuVMargin, &opt, this) + fw + d->bottommargin;
 
    return style()->sizeFromContents(QStyle::CT_Menu, &opt, s, this);
}
 
void QMenu::popup(const QPoint &p, QAction *atAction)
{
    Q_D(QMenu);
    d->popup(p, atAction);
}
 
void QMenuPrivate::popup(const QPoint &p, QAction *atAction, PositionFunction positionFunction)
{
    Q_Q(QMenu);
    if (scroll) { // reset scroll state from last popup
        if (scroll->scrollOffset)
            itemsDirty = 1; // sizeHint will be incorrect if there is previous scroll
        scroll->scrollOffset = 0;
        scroll->scrollFlags = QMenuPrivate::QMenuScroller::ScrollNone;
    }
    tearoffHighlighted = 0;
    motions = 0;
    doChildEffects = true;
    updateLayoutDirection();
 
    q->ensurePolished(); // Get the right font
 
    // Ensure that we get correct sizeHints by placing this window on the correct screen.
    // However if the QMenu was constructed with a Qt::Desktop widget as its parent,
    // then initialScreenIndex was set, so we should respect that for the lifetime of this menu.
    // However if eventLoop exists, then exec() already did this by calling createWinId(); so leave it alone. (QTBUG-76162)
    if (!eventLoop) {
        bool screenSet = false;
        QScreen *screen = topData()->initialScreen;
        if (screen) {
            if (setScreen(screen))
                itemsDirty = true;
            screenSet = true;
        } else if (QMenu *parentMenu = qobject_cast<QMenu *>(parent)) {
            // a submenu is always opened from an open parent menu,
            // so show it on the same screen where the parent is. (QTBUG-76162)
            if (setScreen(parentMenu->screen()))
                itemsDirty = true;
            screenSet = true;
        }
        if (!screenSet && setScreenForPoint(p))
            itemsDirty = true;
    }
 
    const bool contextMenu = isContextMenu();
    if (lastContextMenu != contextMenu) {
        itemsDirty = true;
        lastContextMenu = contextMenu;
    }
 
    // Until QWidget::metric accepts the screen set on a widget (without having a window handle)
    // we need to make sure we get a window handle. This must be done near here because
    // we want the screen to be correctly set and items to be marked dirty.
    // (and screen set could 'fail' on oldscreen == newScreen if created before causing the
    // itemsDirty not to be set though needed to get the correct size on first show).
    if (!windowHandle()) {
        createWinId();
    }
 
#if QT_CONFIG(menubar)
    // if this menu is part of a chain attached to a QMenuBar, set the
    // _NET_WM_WINDOW_TYPE_DROPDOWN_MENU X11 window type
    q->setAttribute(Qt::WA_X11NetWmWindowTypeDropDownMenu, qobject_cast<QMenuBar *>(topCausedWidget()) != nullptr);
#endif
 
    emit q->aboutToShow();
    const bool actionListChanged = itemsDirty;
 
    QRect screen;
#if QT_CONFIG(graphicsview)
    bool isEmbedded = !bypassGraphicsProxyWidget(q) && QMenuPrivate::nearestGraphicsProxyWidget(q);
    if (isEmbedded)
        screen = popupGeometry();
    else
#endif
    screen = popupGeometry(QGuiApplication::screenAt(p));
    updateActionRects(screen);
 
    QPoint pos;
    QPushButton *causedButton = qobject_cast<QPushButton*>(causedPopup.widget);
    if (actionListChanged && causedButton)
        pos = QPushButtonPrivate::get(causedButton)->adjustedMenuPosition();
    else
        pos = p;
 
    const QSize menuSizeHint(q->sizeHint());
    QSize size = menuSizeHint;
 
    if (positionFunction)
        pos = positionFunction(menuSizeHint);
 
    const int desktopFrame = q->style()->pixelMetric(QStyle::PM_MenuDesktopFrameWidth, nullptr, q);
    bool adjustToDesktop = !q->window()->testAttribute(Qt::WA_DontShowOnScreen);
 
    // if the screens have very different geometries and the menu is too big, we have to recalculate
    if ((size.height() > screen.height() || size.width() > screen.width()) ||
        // Layout is not right, we might be able to save horizontal space
        (ncols >1 && size.height() < screen.height())) {
        size.setWidth(qMin(menuSizeHint.width(), screen.width() - desktopFrame * 2));
        size.setHeight(qMin(menuSizeHint.height(), screen.height() - desktopFrame * 2));
        adjustToDesktop = true;
    }
 
#ifdef QT_KEYPAD_NAVIGATION
    if (!atAction && QApplicationPrivate::keypadNavigationEnabled()) {
        // Try to have one item activated
        if (defaultAction && defaultAction->isEnabled()) {
            atAction = defaultAction;
            // TODO: This works for first level menus, not yet sub menus
        } else {
            for (QAction *action : std::as_const(actions))
                if (action->isEnabled()) {
                    atAction = action;
                    break;
                }
        }
        currentAction = atAction;
    }
#endif
    if (ncols > 1) {
        pos.setY(screen.top() + desktopFrame);
    } else if (atAction) {
        for (int i = 0, above_height = 0; i < actions.size(); i++) {
            QAction *action = actions.at(i);
            if (action == atAction) {
                int newY = pos.y() - above_height;
                if (scroll && newY < desktopFrame) {
                    scroll->scrollFlags = scroll->scrollFlags
                                             | QMenuPrivate::QMenuScroller::ScrollUp;
                    scroll->scrollOffset = newY;
                    newY = desktopFrame;
                }
                pos.setY(newY);
 
                if (scroll && scroll->scrollFlags != QMenuPrivate::QMenuScroller::ScrollNone
                    && !q->style()->styleHint(QStyle::SH_Menu_FillScreenWithScroll, nullptr, q)) {
                    int below_height = above_height + scroll->scrollOffset;
                    for (int i2 = i; i2 < actionRects.size(); i2++)
                        below_height += actionRects.at(i2).height();
                    size.setHeight(below_height);
                }
                break;
            } else {
                above_height += actionRects.at(i).height();
            }
        }
    }
 
    QPoint mouse = QCursor::pos();
    mousePopupPos = mouse;
    const bool snapToMouse = !causedPopup.widget && (QRect(p.x() - 3, p.y() - 3, 6, 6).contains(mouse));
 
    if (adjustToDesktop) {
        // handle popup falling "off screen"
        if (q->isRightToLeft()) {
            if (snapToMouse) // position flowing left from the mouse
                pos.setX(mouse.x() - size.width());
 
#if QT_CONFIG(menubar)
            // if the menu is in a menubar or is a submenu, it should be right-aligned
            if (qobject_cast<QMenuBar*>(causedPopup.widget) || qobject_cast<QMenu*>(causedPopup.widget))
                pos.rx() -= size.width();
#endif // QT_CONFIG(menubar)
 
            if (pos.x() < screen.left() + desktopFrame)
                pos.setX(qMax(p.x(), screen.left() + desktopFrame));
            if (pos.x() + size.width() - 1 > screen.right() - desktopFrame)
                pos.setX(qMax(p.x() - size.width(), screen.right() - desktopFrame - size.width() + 1));
        } else {
            if (pos.x() + size.width() - 1 > screen.right() - desktopFrame)
                pos.setX(screen.right() - desktopFrame - size.width() + 1);
            if (pos.x() < screen.left() + desktopFrame)
                pos.setX(screen.left() + desktopFrame);
        }
        if (pos.y() + size.height() - 1 > screen.bottom() - desktopFrame) {
            if (snapToMouse)
                pos.setY(qMin(mouse.y() - (size.height() + desktopFrame), screen.bottom()-desktopFrame-size.height()+1));
            else
                pos.setY(qMax(p.y() - (size.height() + desktopFrame), screen.bottom()-desktopFrame-size.height()+1));
        }
 
        if (pos.y() < screen.top() + desktopFrame)
            pos.setY(screen.top() + desktopFrame);
        if (pos.y() + menuSizeHint.height() - 1 > screen.bottom() - desktopFrame) {
            if (scroll) {
                scroll->scrollFlags |= uint(QMenuPrivate::QMenuScroller::ScrollDown);
                int y = qMax(screen.y(),pos.y());
                size.setHeight(screen.bottom() - (desktopFrame * 2) - y);
            } else {
                // Too big for screen, bias to see bottom of menu (for some reason)
                pos.setY(screen.bottom() - size.height() + 1);
            }
        }
    }
    const int subMenuOffset = q->style()->pixelMetric(QStyle::PM_SubMenuOverlap, nullptr, q);
    QMenu *caused = qobject_cast<QMenu*>(causedPopup.widget);
    if (caused && caused->geometry().width() + menuSizeHint.width() + subMenuOffset < screen.width()) {
        QRect parentActionRect(caused->d_func()->actionRect(caused->d_func()->currentAction));
        const QPoint actionTopLeft = caused->mapToGlobal(parentActionRect.topLeft());
        parentActionRect.moveTopLeft(actionTopLeft);
        if (q->isRightToLeft()) {
            if ((pos.x() + menuSizeHint.width() > parentActionRect.left() - subMenuOffset)
                && (pos.x() < parentActionRect.right()))
            {
                pos.rx() = parentActionRect.left() - menuSizeHint.width();
                if (pos.x() < screen.x())
                    pos.rx() = parentActionRect.right();
                if (pos.x() + menuSizeHint.width() > screen.x() + screen.width())
                    pos.rx() = screen.x();
            }
        } else {
            if ((pos.x() < parentActionRect.right() + subMenuOffset)
                && (pos.x() + menuSizeHint.width() > parentActionRect.left()))
            {
                pos.rx() = parentActionRect.right();
                if (pos.x() + menuSizeHint.width() > screen.x() + screen.width())
                    pos.rx() = parentActionRect.left() - menuSizeHint.width();
                if (pos.x() < screen.x())
                    pos.rx() = screen.x() + screen.width() - menuSizeHint.width();
            }
        }
    }
    q->setGeometry(QRect(pos, size));
#if QT_CONFIG(effects)
    int hGuess = q->isRightToLeft() ? QEffects::LeftScroll : QEffects::RightScroll;
    int vGuess = QEffects::DownScroll;
    if (q->isRightToLeft()) {
        if ((snapToMouse && (pos.x() + size.width() / 2 > mouse.x())) ||
           (qobject_cast<QMenu*>(causedPopup.widget) && pos.x() + size.width() / 2 > causedPopup.widget->x()))
            hGuess = QEffects::RightScroll;
    } else {
        if ((snapToMouse && (pos.x() + size.width() / 2 < mouse.x())) ||
           (qobject_cast<QMenu*>(causedPopup.widget) && pos.x() + size.width() / 2 < causedPopup.widget->x()))
            hGuess = QEffects::LeftScroll;
    }
 
#if QT_CONFIG(menubar)
    if ((snapToMouse && (pos.y() + size.height() / 2 < mouse.y())) ||
       (qobject_cast<QMenuBar*>(causedPopup.widget) &&
        pos.y() + size.width() / 2 < causedPopup.widget->mapToGlobal(causedPopup.widget->pos()).y()))
       vGuess = QEffects::UpScroll;
#endif
    if (QApplication::isEffectEnabled(Qt::UI_AnimateMenu)) {
        bool doChildEffects = true;
#if QT_CONFIG(menubar)
        if (QMenuBar *mb = qobject_cast<QMenuBar*>(causedPopup.widget)) {
            doChildEffects = mb->d_func()->doChildEffects;
            mb->d_func()->doChildEffects = false;
        } else
#endif
        if (QMenu *m = qobject_cast<QMenu*>(causedPopup.widget)) {
            doChildEffects = m->d_func()->doChildEffects;
            m->d_func()->doChildEffects = false;
        }
 
        if (doChildEffects) {
            if (QApplication::isEffectEnabled(Qt::UI_FadeMenu))
                qFadeEffect(q);
            else if (causedPopup.widget)
                qScrollEffect(q, qobject_cast<QMenu*>(causedPopup.widget) ? hGuess : vGuess);
            else
                qScrollEffect(q, hGuess | vGuess);
        } else {
            // kill any running effect
            qFadeEffect(nullptr);
            qScrollEffect(nullptr);
 
            q->show();
        }
    } else
#endif
    {
        q->show();
    }
 
#if QT_CONFIG(accessibility)
    QAccessibleEvent event(q, QAccessible::PopupMenuStart);
    QAccessible::updateAccessibility(&event);
#endif
}
 
QAction *QMenu::exec()
{
    return exec(pos());
}
 
 
QAction *QMenu::exec(const QPoint &p, QAction *action)
{
    Q_D(QMenu);
    return d->exec(p, action);
}
 
QAction *QMenuPrivate::exec(const QPoint &p, QAction *action, PositionFunction positionFunction)
{
    Q_Q(QMenu);
    q->ensurePolished();
    q->createWinId();
    QEventLoop evtLoop;
    eventLoop = &evtLoop;
    popup(p, action, positionFunction);
 
    QPointer<QObject> guard = q;
    (void) evtLoop.exec();
    if (guard.isNull())
        return nullptr;
 
    action = syncAction;
    syncAction = nullptr;
    eventLoop = nullptr;
    return action;
}
 
QAction *QMenu::exec(const QList<QAction *> &actions, const QPoint &pos, QAction *at, QWidget *parent)
{
    QMenu menu(parent);
    menu.addActions(actions);
    return menu.exec(pos, at);
}
 
void QMenu::hideEvent(QHideEvent *)
{
    Q_D(QMenu);
    emit aboutToHide();
    if (d->eventLoop)
        d->eventLoop->exit();
    d->setCurrentAction(nullptr);
#if QT_CONFIG(accessibility)
    QAccessibleEvent event(this, QAccessible::PopupMenuEnd);
    QAccessible::updateAccessibility(&event);
#endif
#if QT_CONFIG(menubar)
    if (QMenuBar *mb = qobject_cast<QMenuBar*>(d->causedPopup.widget))
        mb->d_func()->setCurrentAction(nullptr);
#endif
    if (QMenuPrivate::mouseDown == this)
        QMenuPrivate::mouseDown = nullptr;
    d->hasHadMouse = false;
    if (d->activeMenu)
        d->hideMenu(d->activeMenu);
    d->causedPopup.widget = nullptr;
    d->causedPopup.action = nullptr;
    if (d->scroll)
        d->scroll->scrollTimer.stop(); //make sure the timer stops
}
 
void QMenu::paintEvent(QPaintEvent *e)
{
    Q_D(QMenu);
    d->updateActionRects();
    QStylePainter p(this);
    QRegion emptyArea = QRegion(rect());
 
    QStyleOptionMenuItem menuOpt;
    menuOpt.initFrom(this);
    menuOpt.state = QStyle::State_None;
    menuOpt.checkType = QStyleOptionMenuItem::NotCheckable;
    menuOpt.maxIconWidth = 0;
    menuOpt.reservedShortcutWidth = 0;
    p.drawPrimitive(QStyle::PE_PanelMenu, menuOpt);
 
    //calculate the scroll up / down rect
    const int fw = style()->pixelMetric(QStyle::PM_MenuPanelWidth, nullptr, this);
    const int hmargin = style()->pixelMetric(QStyle::PM_MenuHMargin,nullptr, this);
    const int vmargin = style()->pixelMetric(QStyle::PM_MenuVMargin, nullptr, this);
 
    QRect scrollUpRect, scrollDownRect;
    const int leftmargin = fw + hmargin + d->leftmargin;
    const int topmargin = fw + vmargin + d->topmargin;
    const int bottommargin = fw + vmargin + d->bottommargin;
    const int contentWidth = width() - (fw + hmargin) * 2 - d->leftmargin - d->rightmargin;
    if (d->scroll) {
        if (d->scroll->scrollFlags & QMenuPrivate::QMenuScroller::ScrollUp)
            scrollUpRect.setRect(leftmargin, topmargin, contentWidth, d->scrollerHeight());
 
        if (d->scroll->scrollFlags & QMenuPrivate::QMenuScroller::ScrollDown)
            scrollDownRect.setRect(leftmargin, height() - d->scrollerHeight() - bottommargin,
                                   contentWidth, d->scrollerHeight());
    }
 
    //calculate the tear off rect
    QRect tearOffRect;
    if (d->tearoff) {
        tearOffRect.setRect(leftmargin, topmargin, contentWidth,
                            style()->pixelMetric(QStyle::PM_MenuTearoffHeight, nullptr, this));
        if (d->scroll && d->scroll->scrollFlags & QMenuPrivate::QMenuScroller::ScrollUp)
            tearOffRect.translate(0, d->scrollerHeight());
    }
 
    //draw the items that need updating..
    QRect scrollUpTearOffRect = scrollUpRect.united(tearOffRect);
    for (int i = 0; i < d->actions.size(); ++i) {
        QAction *action = d->actions.at(i);
        QRect actionRect = d->actionRects.at(i);
        if (!e->rect().intersects(actionRect)
            || d->widgetItems.value(action))
           continue;
        //set the clip region to be extra safe (and adjust for the scrollers)
        emptyArea -= QRegion(actionRect);
 
        QRect adjustedActionRect = actionRect;
        if (!scrollUpTearOffRect.isEmpty() && adjustedActionRect.bottom() <= scrollUpTearOffRect.top())
            continue;
 
        if (!scrollDownRect.isEmpty() && adjustedActionRect.top() >=  scrollDownRect.bottom())
            continue;
 
        if (adjustedActionRect.intersects(scrollUpTearOffRect)) {
            if (adjustedActionRect.bottom() <= scrollUpTearOffRect.bottom())
                continue;
            else
                adjustedActionRect.setTop(scrollUpTearOffRect.bottom()+1);
        }
 
        if (adjustedActionRect.intersects(scrollDownRect)) {
            if (adjustedActionRect.top() >= scrollDownRect.top())
                continue;
            else
                adjustedActionRect.setBottom(scrollDownRect.top()-1);
        }
 
        QRegion adjustedActionReg(adjustedActionRect);
        p.setClipRegion(adjustedActionReg);
 
        QStyleOptionMenuItem opt;
        initStyleOption(&opt, action);
        opt.rect = actionRect;
        p.drawControl(QStyle::CE_MenuItem, opt);
    }
 
    emptyArea -= QRegion(scrollUpTearOffRect);
    emptyArea -= QRegion(scrollDownRect);
 
    if (d->scrollUpTearOffItem || d->scrollDownItem) {
        if (d->scrollUpTearOffItem)
            d->scrollUpTearOffItem->updateScrollerRects(scrollUpTearOffRect);
        if (d->scrollDownItem)
            d->scrollDownItem->updateScrollerRects(scrollDownRect);
    } else {
        //paint scroll up /down
        d->drawScroller(&p, QMenuPrivate::ScrollerTearOffItem::ScrollUp, scrollUpRect);
        d->drawScroller(&p, QMenuPrivate::ScrollerTearOffItem::ScrollDown, scrollDownRect);
        //paint the tear off..
        d->drawTearOff(&p, tearOffRect);
    }
 
    //draw border
    if (fw) {
        QRegion borderReg;
        borderReg += QRect(0, 0, fw, height()); //left
        borderReg += QRect(width()-fw, 0, fw, height()); //right
        borderReg += QRect(0, 0, width(), fw); //top
        borderReg += QRect(0, height()-fw, width(), fw); //bottom
        p.setClipRegion(borderReg);
        emptyArea -= borderReg;
        QStyleOptionFrame frame;
        frame.rect = rect();
        frame.palette = palette();
        frame.state = QStyle::State_None;
        frame.lineWidth = style()->pixelMetric(QStyle::PM_MenuPanelWidth, &frame);
        frame.midLineWidth = 0;
        p.drawPrimitive(QStyle::PE_FrameMenu, frame);
    }
 
    //finally the rest of the spaces
    p.setClipRegion(emptyArea);
    menuOpt.state = QStyle::State_None;
    menuOpt.menuItemType = QStyleOptionMenuItem::EmptyArea;
    menuOpt.checkType = QStyleOptionMenuItem::NotCheckable;
    menuOpt.rect = rect();
    menuOpt.menuRect = rect();
    p.drawControl(QStyle::CE_MenuEmptyArea, menuOpt);
}
 
#if QT_CONFIG(wheelevent)
void QMenu::wheelEvent(QWheelEvent *e)
{
    Q_D(QMenu);
    if (d->scroll && rect().contains(e->position().toPoint()))
        d->scrollMenu(e->angleDelta().y() > 0 ?
                      QMenuPrivate::QMenuScroller::ScrollUp : QMenuPrivate::QMenuScroller::ScrollDown);
}
#endif
 
void QMenu::mousePressEvent(QMouseEvent *e)
{
    Q_D(QMenu);
    if (d->aboutToHide || d->mouseEventTaken(e))
        return;
    // Workaround for XCB on multiple screens which doesn't have offset. If the menu is open on one screen
    // and mouse clicks on second screen, e->pos() is QPoint(0,0) and the menu doesn't hide. This trick makes
    // possible to hide the menu when mouse clicks on another screen (e->screenPos() returns correct value).
    // Only when mouse clicks in QPoint(0,0) on second screen, the menu doesn't hide.
    if ((e->position().toPoint().isNull() && !e->globalPosition().isNull()) || !rect().contains(e->position().toPoint())) {
         if (d->noReplayFor
             && QRect(d->noReplayFor->mapToGlobal(QPoint()), d->noReplayFor->size()).contains(e->globalPosition().toPoint()))
             setAttribute(Qt::WA_NoMouseReplay);
         if (d->eventLoop) // synchronous operation
             d->syncAction = nullptr;
        d->hideUpToMenuBar();
        return;
    }
    QMenuPrivate::mouseDown = this;
 
    QAction *action = d->actionAt(e->position().toPoint());
    d->setCurrentAction(action, 20);
    update();
}
 
void QMenu::mouseReleaseEvent(QMouseEvent *e)
{
    Q_D(QMenu);
    if (d->aboutToHide || d->mouseEventTaken(e))
        return;
    if (QMenuPrivate::mouseDown != this) {
        QMenuPrivate::mouseDown = nullptr;
        return;
    }
 
    QMenuPrivate::mouseDown = nullptr;
    d->setSyncAction();
    QAction *action = d->actionAt(e->position().toPoint());
 
    if (action && action == d->currentAction) {
        if (!action->menu()) {
#if defined(Q_OS_WIN)
            //On Windows only context menus can be activated with the right button
            if (e->button() == Qt::LeftButton || d->topCausedWidget() == 0)
#endif
                d->activateAction(action, QAction::Trigger);
        }
    } else if ((!action || action->isEnabled()) && d->hasMouseMoved(e->globalPosition().toPoint())) {
        d->hideUpToMenuBar();
    }
}
 
void QMenu::changeEvent(QEvent *e)
{
    Q_D(QMenu);
    if (e->type() == QEvent::StyleChange || e->type() == QEvent::FontChange ||
        e->type() == QEvent::LayoutDirectionChange) {
        d->itemsDirty = 1;
        setMouseTracking(style()->styleHint(QStyle::SH_Menu_MouseTracking, nullptr, this));
        if (isVisible())
            resize(sizeHint());
        if (!style()->styleHint(QStyle::SH_Menu_Scrollable, nullptr, this)) {
            delete d->scroll;
            d->scroll = nullptr;
        } else if (!d->scroll) {
            d->scroll = new QMenuPrivate::QMenuScroller;
            d->scroll->scrollFlags = QMenuPrivate::QMenuScroller::ScrollNone;
        }
    } else if (e->type() == QEvent::EnabledChange) {
        if (d->tornPopup) // torn-off menu
            d->tornPopup->setEnabled(isEnabled());
        d->menuAction->setEnabled(isEnabled());
        if (!d->platformMenu.isNull())
            d->platformMenu->setEnabled(isEnabled());
    }
    QWidget::changeEvent(e);
}
 
 
bool QMenu::event(QEvent *e)
{
    Q_D(QMenu);
    switch (e->type()) {
    case QEvent::Polish:
        d->updateLayoutDirection();
        break;
    case QEvent::ShortcutOverride: {
            QKeyEvent *kev = static_cast<QKeyEvent *>(e);
            if (kev->key() == Qt::Key_Up || kev->key() == Qt::Key_Down
                || kev->key() == Qt::Key_Left || kev->key() == Qt::Key_Right
                || kev->key() == Qt::Key_Enter || kev->key() == Qt::Key_Return
#ifndef QT_NO_SHORTCUT
                || kev->matches(QKeySequence::Cancel)
#endif
                    ) {
                e->accept();
                return true;
            }
        }
        break;
    case QEvent::KeyPress: {
        QKeyEvent *ke = static_cast<QKeyEvent *>(e);
        if (ke->key() == Qt::Key_Tab || ke->key() == Qt::Key_Backtab) {
            keyPressEvent(ke);
            return true;
        }
    } break;
    case QEvent::MouseButtonPress:
    case QEvent::ContextMenu: {
            bool canPopup = true;
            if (e->type() == QEvent::MouseButtonPress)
                canPopup = (static_cast<QMouseEvent*>(e)->button() == Qt::LeftButton);
            if (canPopup && d->delayState.timer.isActive()) {
                d->delayState.stop();
                internalDelayedPopup();
            }
        }
        break;
    case QEvent::Resize: {
        QStyleHintReturnMask menuMask;
        QStyleOption option;
        option.initFrom(this);
        if (style()->styleHint(QStyle::SH_Menu_Mask, &option, this, &menuMask)) {
            setMask(menuMask.region);
        }
        d->itemsDirty = 1;
        d->updateActionRects();
        break; }
    case QEvent::Show:
        QMenuPrivate::mouseDown = nullptr;
        d->updateActionRects();
        d->sloppyState.reset();
        if (d->currentAction)
            d->popupAction(d->currentAction, 0, false);
        if (isWindow() && window() && window()->windowHandle() && !window()->windowHandle()->transientParent())
            window()->windowHandle()->setTransientParent(d->transientParentWindow());
        break;
#if QT_CONFIG(tooltip)
    case QEvent::ToolTip:
        if (d->toolTipsVisible) {
            const QHelpEvent *ev = static_cast<const QHelpEvent*>(e);
            if (const QAction *action = actionAt(ev->pos())) {
                const QString toolTip = action->d_func()->tooltip;
                if (!toolTip.isEmpty())
                    QToolTip::showText(ev->globalPos(), toolTip, this);
                else
                    QToolTip::hideText();
                return true;
            }
        }
        break;
#endif // QT_CONFIG(tooltip)
#if QT_CONFIG(whatsthis)
    case QEvent::QueryWhatsThis:
        e->setAccepted(d->whatsThis.size());
        if (QAction *action = d->actionAt(static_cast<QHelpEvent*>(e)->pos())) {
            if (action->whatsThis().size() || action->menu())
                e->accept();
        }
        return true;
#endif
    default:
        break;
    }
    return QWidget::event(e);
}
 
bool QMenu::focusNextPrevChild(bool next)
{
    setFocus();
    QKeyEvent ev(QEvent::KeyPress, next ? Qt::Key_Tab : Qt::Key_Backtab, Qt::NoModifier);
    keyPressEvent(&ev);
    return true;
}
 
void QMenu::keyPressEvent(QKeyEvent *e)
{
    Q_D(QMenu);
    d->updateActionRects();
    int key = e->key();
    if (isRightToLeft()) {  // in reverse mode open/close key for submenues are reversed
        if (key == Qt::Key_Left)
            key = Qt::Key_Right;
        else if (key == Qt::Key_Right)
            key = Qt::Key_Left;
    }
#ifndef Q_OS_MAC
    if (key == Qt::Key_Tab) //means down
        key = Qt::Key_Down;
    if (key == Qt::Key_Backtab) //means up
        key = Qt::Key_Up;
#endif
 
    bool key_consumed = false;
    switch(key) {
    case Qt::Key_Home:
        key_consumed = true;
        if (d->scroll)
            d->scrollMenu(QMenuPrivate::QMenuScroller::ScrollTop, true);
        break;
    case Qt::Key_End:
        key_consumed = true;
        if (d->scroll)
            d->scrollMenu(QMenuPrivate::QMenuScroller::ScrollBottom, true);
        break;
    case Qt::Key_PageUp:
        key_consumed = true;
        if (d->currentAction && d->scroll) {
            if (d->scroll->scrollFlags & QMenuPrivate::QMenuScroller::ScrollUp)
                d->scrollMenu(QMenuPrivate::QMenuScroller::ScrollUp, true, true);
            else
                d->scrollMenu(QMenuPrivate::QMenuScroller::ScrollTop, true);
        }
        break;
    case Qt::Key_PageDown:
        key_consumed = true;
        if (d->currentAction && d->scroll) {
            if (d->scroll->scrollFlags & QMenuPrivate::QMenuScroller::ScrollDown)
                d->scrollMenu(QMenuPrivate::QMenuScroller::ScrollDown, true, true);
            else
                d->scrollMenu(QMenuPrivate::QMenuScroller::ScrollBottom, true);
        }
        break;
    case Qt::Key_Up:
    case Qt::Key_Down: {
        key_consumed = true;
        QAction *nextAction = nullptr;
        QMenuPrivate::QMenuScroller::ScrollLocation scroll_loc = QMenuPrivate::QMenuScroller::ScrollStay;
        if (!d->currentAction) {
            if (key == Qt::Key_Down) {
                for(int i = 0; i < d->actions.size(); ++i) {
                    QAction *act = d->actions.at(i);
                    if (d->actionRects.at(i).isNull())
                        continue;
                    if (!act->isSeparator() &&
                        (style()->styleHint(QStyle::SH_Menu_AllowActiveAndDisabled, nullptr, this)
                         || act->isEnabled())) {
                        nextAction = act;
                        break;
                    }
                }
            } else {
                for(int i = d->actions.size()-1; i >= 0; --i) {
                    QAction *act = d->actions.at(i);
                    if (d->actionRects.at(i).isNull())
                        continue;
                    if (!act->isSeparator() &&
                        (style()->styleHint(QStyle::SH_Menu_AllowActiveAndDisabled, nullptr, this)
                         || act->isEnabled())) {
                        nextAction = act;
                        break;
                    }
                }
            }
        } else {
            for(int i = 0, y = 0; !nextAction && i < d->actions.size(); i++) {
                QAction *act = d->actions.at(i);
                if (act == d->currentAction) {
                    if (key == Qt::Key_Up) {
                        for(int next_i = i-1; true; next_i--) {
                            if (next_i == -1) {
                                if (!style()->styleHint(QStyle::SH_Menu_SelectionWrap, nullptr, this))
                                    break;
                                if (d->scroll)
                                    scroll_loc = QMenuPrivate::QMenuScroller::ScrollBottom;
                                next_i = d->actionRects.size()-1;
                            }
                            QAction *next = d->actions.at(next_i);
                            if (next == d->currentAction)
                                break;
                            if (d->actionRects.at(next_i).isNull())
                                continue;
                            if (next->isSeparator() ||
                               (!next->isEnabled() &&
                                !style()->styleHint(QStyle::SH_Menu_AllowActiveAndDisabled, nullptr, this)))
                                continue;
                            nextAction = next;
                            if (d->scroll && (d->scroll->scrollFlags & QMenuPrivate::QMenuScroller::ScrollUp)) {
                                int topVisible = d->scrollerHeight();
                                if (d->tearoff)
                                    topVisible += style()->pixelMetric(QStyle::PM_MenuTearoffHeight, nullptr, this);
                                if (((y + d->scroll->scrollOffset) - topVisible) <= d->actionRects.at(next_i).height())
                                    scroll_loc = QMenuPrivate::QMenuScroller::ScrollTop;
                            }
                            break;
                        }
                        if (!nextAction && d->tearoff)
                            d->tearoffHighlighted = 1;
                    } else {
                        y += d->actionRects.at(i).height();
                        for(int next_i = i+1; true; next_i++) {
                            if (next_i == d->actionRects.size()) {
                                if (!style()->styleHint(QStyle::SH_Menu_SelectionWrap, nullptr, this))
                                    break;
                                if (d->scroll)
                                    scroll_loc = QMenuPrivate::QMenuScroller::ScrollTop;
                                next_i = 0;
                            }
                            QAction *next = d->actions.at(next_i);
                            if (next == d->currentAction)
                                break;
                            if (d->actionRects.at(next_i).isNull())
                                continue;
                            if (next->isSeparator() ||
                               (!next->isEnabled() &&
                                !style()->styleHint(QStyle::SH_Menu_AllowActiveAndDisabled, nullptr, this)))
                                continue;
                            nextAction = next;
                            if (d->scroll && (d->scroll->scrollFlags & QMenuPrivate::QMenuScroller::ScrollDown)) {
                                int bottomVisible = height() - d->scrollerHeight();
                                if (d->scroll->scrollFlags & QMenuPrivate::QMenuScroller::ScrollUp)
                                    bottomVisible -= d->scrollerHeight();
                                if (d->tearoff)
                                    bottomVisible -= style()->pixelMetric(QStyle::PM_MenuTearoffHeight, nullptr, this);
                                if ((y + d->scroll->scrollOffset + d->actionRects.at(next_i).height()) > bottomVisible)
                                    scroll_loc = QMenuPrivate::QMenuScroller::ScrollBottom;
                            }
                            break;
                        }
                    }
                    break;
                }
                y += d->actionRects.at(i).height();
            }
        }
        if (nextAction) {
            if (d->scroll && scroll_loc != QMenuPrivate::QMenuScroller::ScrollStay) {
                d->scroll->scrollTimer.stop();
                d->scrollMenu(nextAction, scroll_loc);
            }
            d->setCurrentAction(nextAction, /*popup*/-1, QMenuPrivate::SelectedFromKeyboard);
        }
        break; }
 
    case Qt::Key_Right:
        if (d->currentAction && d->currentAction->isEnabled() && d->currentAction->menu()) {
            d->popupAction(d->currentAction, 0, true);
            key_consumed = true;
            break;
        }
        Q_FALLTHROUGH();
    case Qt::Key_Left: {
        if (d->currentAction && !d->scroll) {
            QAction *nextAction = nullptr;
            if (key == Qt::Key_Left) {
                QRect actionR = d->actionRect(d->currentAction);
                for(int x = actionR.left()-1; !nextAction && x >= 0; x--)
                    nextAction = d->actionAt(QPoint(x, actionR.center().y()));
            } else {
                QRect actionR = d->actionRect(d->currentAction);
                for(int x = actionR.right()+1; !nextAction && x < width(); x++)
                    nextAction = d->actionAt(QPoint(x, actionR.center().y()));
            }
            if (nextAction) {
                d->setCurrentAction(nextAction, /*popup*/-1, QMenuPrivate::SelectedFromKeyboard);
                key_consumed = true;
            }
        }
        if (!key_consumed && key == Qt::Key_Left && qobject_cast<QMenu*>(d->causedPopup.widget)) {
            QPointer<QWidget> caused = d->causedPopup.widget;
            d->hideMenu(this);
            if (caused)
                caused->setFocus();
            key_consumed = true;
        }
        break; }
 
    case Qt::Key_Alt:
        if (d->tornoff)
            break;
 
        key_consumed = true;
        if (style()->styleHint(QStyle::SH_MenuBar_AltKeyNavigation, nullptr, this))
        {
            d->hideMenu(this);
#if QT_CONFIG(menubar)
            if (QMenuBar *mb = qobject_cast<QMenuBar*>(QApplication::focusWidget())) {
                mb->d_func()->setKeyboardMode(false);
            }
#endif
        }
        break;
 
    case Qt::Key_Space:
        if (!style()->styleHint(QStyle::SH_Menu_SpaceActivatesItem, nullptr, this))
            break;
        // for motif, fall through
        Q_FALLTHROUGH();
#ifdef QT_KEYPAD_NAVIGATION
    case Qt::Key_Select:
#endif
    case Qt::Key_Return:
    case Qt::Key_Enter: {
        if (!d->currentAction) {
            d->setFirstActionActive();
            key_consumed = true;
            break;
        }
 
        d->setSyncAction();
 
        if (d->currentAction->menu())
            d->popupAction(d->currentAction, 0, true);
        else
            d->activateAction(d->currentAction, QAction::Trigger);
        key_consumed = true;
        break; }
 
#if QT_CONFIG(whatsthis)
    case Qt::Key_F1:
        if (!d->currentAction || d->currentAction->whatsThis().isNull())
            break;
        QWhatsThis::enterWhatsThisMode();
        d->activateAction(d->currentAction, QAction::Trigger);
        return;
#endif
    default:
        key_consumed = false;
    }
 
    if (!key_consumed && (
        false
#ifndef QT_NO_SHORTCUT
        || e->matches(QKeySequence::Cancel)
#endif
#ifdef QT_KEYPAD_NAVIGATION
        || e->key() == Qt::Key_Back
#endif
    )) {
        key_consumed = true;
        if (d->tornoff) {
            close();
            return;
        }
        {
            QPointer<QWidget> caused = d->causedPopup.widget;
            d->hideMenu(this); // hide after getting causedPopup
#if QT_CONFIG(menubar)
            if (QMenuBar *mb = qobject_cast<QMenuBar*>(caused)) {
                mb->d_func()->setCurrentAction(d->menuAction);
                mb->d_func()->setKeyboardMode(true);
            }
#endif
        }
    }
 
    if (!key_consumed) {                                // send to menu bar
        if ((!e->modifiers() || e->modifiers() == Qt::AltModifier || e->modifiers() == Qt::ShiftModifier) &&
           e->text().size()==1) {
            bool activateAction = false;
            QAction *nextAction = nullptr;
            if (style()->styleHint(QStyle::SH_Menu_KeyboardSearch, nullptr, this) && !e->modifiers()) {
                int best_match_count = 0;
                d->searchBufferTimer.start(2000, this);
                d->searchBuffer += e->text();
                for(int i = 0; i < d->actions.size(); ++i) {
                    int match_count = 0;
                    if (d->actionRects.at(i).isNull())
                        continue;
                    QAction *act = d->actions.at(i);
                    const QString act_text = act->text();
                    for(int c = 0; c < d->searchBuffer.size(); ++c) {
                        if (act_text.indexOf(d->searchBuffer.at(c), 0, Qt::CaseInsensitive) != -1)
                            ++match_count;
                    }
                    if (match_count > best_match_count) {
                        best_match_count = match_count;
                        nextAction = act;
                    }
                }
            }
#ifndef QT_NO_SHORTCUT
            else {
                int clashCount = 0;
                QAction *first = nullptr, *currentSelected = nullptr, *firstAfterCurrent = nullptr;
                QChar c = e->text().at(0).toUpper();
                for(int i = 0; i < d->actions.size(); ++i) {
                    if (d->actionRects.at(i).isNull())
                        continue;
                    QAction *act = d->actions.at(i);
                    QKeySequence sequence = QKeySequence::mnemonic(act->text());
                    int key = sequence[0].toCombined() & 0xffff; // suspicious
                    if (key == c.unicode()) {
                        clashCount++;
                        if (!first)
                            first = act;
                        if (act == d->currentAction)
                            currentSelected = act;
                        else if (!firstAfterCurrent && currentSelected)
                            firstAfterCurrent = act;
                    }
                }
                if (clashCount == 1)
                    activateAction = true;
                if (clashCount >= 1) {
                    if (clashCount == 1 || !currentSelected || !firstAfterCurrent)
                        nextAction = first;
                    else
                        nextAction = firstAfterCurrent;
                }
            }
#endif
            if (nextAction) {
                key_consumed = true;
                if (d->scroll)
                    d->scrollMenu(nextAction, QMenuPrivate::QMenuScroller::ScrollCenter, false);
                d->setCurrentAction(nextAction, 0, QMenuPrivate::SelectedFromElsewhere, true);
                if (!nextAction->menu() && activateAction) {
                    d->setSyncAction();
                    d->activateAction(nextAction, QAction::Trigger);
                }
            }
        }
        if (!key_consumed) {
#if QT_CONFIG(menubar)
            if (QMenuBar *mb = qobject_cast<QMenuBar*>(d->topCausedWidget())) {
                QAction *oldAct = mb->d_func()->currentAction;
                QCoreApplication::sendEvent(mb, e);
                if (mb->d_func()->currentAction != oldAct)
                    key_consumed = true;
            }
#endif
        }
 
#ifdef Q_OS_WIN32
        if (key_consumed && (e->key() == Qt::Key_Control || e->key() == Qt::Key_Shift || e->key() == Qt::Key_Meta))
            QApplication::beep();
#endif // Q_OS_WIN32
    }
    if (key_consumed)
        e->accept();
    else
        e->ignore();
}
 
void QMenu::mouseMoveEvent(QMouseEvent *e)
{
    Q_D(QMenu);
    if (!isVisible() || d->aboutToHide || d->mouseEventTaken(e))
        return;
 
    d->motions++;
    if (!d->hasMouseMoved(e->globalPosition().toPoint()))
        return;
 
    d->hasHadMouse = d->hasHadMouse || rect().contains(e->position().toPoint());
 
    QAction *action = d->actionAt(e->position().toPoint());
    if ((!action || action->isSeparator()) && !d->sloppyState.enabled()) {
        if (d->hasHadMouse
            || (!d->currentAction || !d->currentAction->menu() || !d->currentAction->menu()->isVisible())) {
            d->setCurrentAction(action);
        }
        return;
    }
 
    if (e->buttons())
        QMenuPrivate::mouseDown = this;
 
    if (d->activeMenu)
        d->activeMenu->d_func()->setCurrentAction(nullptr);
 
    QMenuSloppyState::MouseEventResult sloppyEventResult = d->sloppyState.processMouseEvent(e->position(), action, d->currentAction);
    if (sloppyEventResult == QMenuSloppyState::EventShouldBePropagated) {
        d->setCurrentAction(action, d->mousePopupDelay);
    } else if (sloppyEventResult == QMenuSloppyState::EventDiscardsSloppyState) {
        d->sloppyState.reset();
        d->hideMenu(d->activeMenu);
    }
}
 
void QMenu::enterEvent(QEnterEvent *)
{
    Q_D(QMenu);
    d->hasReceievedEnter = true;
    d->sloppyState.enter();
    d->motions = -1; // force us to ignore the generate mouse move in mouseMoveEvent()
}
 
void QMenu::leaveEvent(QEvent *)
{
    Q_D(QMenu);
    d->hasReceievedEnter = false;
    if (!d->activeMenu && d->currentAction)
        setActiveAction(nullptr);
}
 
void
QMenu::timerEvent(QTimerEvent *e)
{
    Q_D(QMenu);
    if (d->scroll && d->scroll->scrollTimer.timerId() == e->timerId()) {
        d->scrollMenu((QMenuPrivate::QMenuScroller::ScrollDirection)d->scroll->scrollDirection);
        if (d->scroll->scrollFlags == QMenuPrivate::QMenuScroller::ScrollNone)
            d->scroll->scrollTimer.stop();
    } else if (d->delayState.timer.timerId() == e->timerId()) {
        if (d->currentAction && !d->currentAction->menu())
            return;
        d->delayState.stop();
        d->sloppyState.stopTimer();
        internalDelayedPopup();
    } else if (d->sloppyState.isTimerId(e->timerId())) {
        d->sloppyState.timeout();
    } else if (d->searchBufferTimer.timerId() == e->timerId()) {
        d->searchBuffer.clear();
    }
}
 
void QMenu::actionEvent(QActionEvent *e)
{
    Q_D(QMenu);
    d->itemsDirty = 1;
    setAttribute(Qt::WA_Resized, false);
    if (d->tornPopup)
        d->tornPopup->syncWithMenu(this, e);
    if (e->type() == QEvent::ActionAdded) {
 
        if (!d->tornoff
#if QT_CONFIG(menubar)
            && !qobject_cast<QMenuBar*>(e->action()->parent())
#endif
           ) {
            // Only connect if the action was not directly added by QMenuBar::addAction(const QString &text)
            // to avoid the signal being emitted twice
            connect(e->action(), SIGNAL(triggered()), this, SLOT(_q_actionTriggered()), Qt::UniqueConnection);
            connect(e->action(), SIGNAL(hovered()), this, SLOT(_q_actionHovered()), Qt::UniqueConnection);
        }
        if (QWidgetAction *wa = qobject_cast<QWidgetAction *>(e->action())) {
            QWidget *widget = wa->requestWidget(this);
            if (widget) {
                d->widgetItems.insert(wa, widget);
                if (d->scroll) {
                    if (!d->scrollUpTearOffItem)
                        d->scrollUpTearOffItem =
                                new QMenuPrivate::ScrollerTearOffItem(QMenuPrivate::ScrollerTearOffItem::ScrollUp, d, this);
                    if (!d->scrollDownItem)
                        d->scrollDownItem =
                                new QMenuPrivate::ScrollerTearOffItem(QMenuPrivate::ScrollerTearOffItem::ScrollDown, d, this);
                }
            }
        }
    } else if (e->type() == QEvent::ActionRemoved) {
        e->action()->disconnect(this);
        if (e->action() == d->currentAction)
            d->currentAction = nullptr;
        if (QWidgetAction *wa = qobject_cast<QWidgetAction *>(e->action())) {
            if (QWidget *widget = d->widgetItems.value(wa))
                wa->releaseWidget(widget);
        }
        d->widgetItems.remove(static_cast<QAction *>(e->action()));
    }
 
    if (!d->platformMenu.isNull()) {
        auto action = static_cast<QAction *>(e->action());
        if (e->type() == QEvent::ActionAdded) {
            QPlatformMenuItem *beforeItem = e->before()
                ? d->platformMenu->menuItemForTag(reinterpret_cast<quintptr>(e->before()))
                : nullptr;
            d->insertActionInPlatformMenu(action, beforeItem);
        } else if (e->type() == QEvent::ActionRemoved) {
            QPlatformMenuItem *menuItem = d->platformMenu->menuItemForTag(reinterpret_cast<quintptr>(e->action()));
            d->platformMenu->removeMenuItem(menuItem);
            delete menuItem;
        } else if (e->type() == QEvent::ActionChanged) {
            QPlatformMenuItem *menuItem = d->platformMenu->menuItemForTag(reinterpret_cast<quintptr>(e->action()));
            if (menuItem) {
                d->copyActionToPlatformItem(action, menuItem);
                d->platformMenu->syncMenuItem(menuItem);
            }
        }
 
        d->platformMenu->syncSeparatorsCollapsible(d->collapsibleSeparators);
    }
 
    if (isVisible()) {
        resize(sizeHint());
        update();
    }
}
 
void QMenu::internalDelayedPopup()
{
    Q_D(QMenu);
    //hide the current item
    if (QMenu *menu = d->activeMenu) {
        if (d->activeMenu->menuAction() != d->currentAction)
            d->hideMenu(menu);
    }
 
    if (!d->currentAction || !d->currentAction->isEnabled() || !d->currentAction->menu() ||
        !d->currentAction->menu()->isEnabled() || d->currentAction->menu()->isVisible())
        return;
 
    //setup
    d->activeMenu = d->currentAction->menu();
    d->activeMenu->d_func()->causedPopup.widget = this;
    d->activeMenu->d_func()->causedPopup.action = d->currentAction;
 
    QRect screen;
#if QT_CONFIG(graphicsview)
    bool isEmbedded = !bypassGraphicsProxyWidget(this) && QMenuPrivate::nearestGraphicsProxyWidget(this);
    if (isEmbedded)
        screen = d->popupGeometry();
    else
#endif
    screen = d->popupGeometry(QGuiApplication::screenAt(pos()));
 
    int subMenuOffset = style()->pixelMetric(QStyle::PM_SubMenuOverlap, nullptr, this);
    const QRect actionRect(d->actionRect(d->currentAction));
    QPoint subMenuPos(mapToGlobal(QPoint(actionRect.right() + subMenuOffset + 1, actionRect.top())));
    if (subMenuPos.x() > screen.right())
        subMenuPos.setX(geometry().left());
 
    const auto &subMenuActions = d->activeMenu->actions();
    if (!subMenuActions.isEmpty()) {
        // Offset by the submenu's 1st action position to align with the current action
        const auto subMenuActionRect = d->activeMenu->actionGeometry(subMenuActions.first());
        subMenuPos.ry() -= subMenuActionRect.top();
    }
 
    d->activeMenu->popup(subMenuPos);
    d->sloppyState.setSubMenuPopup(actionRect, d->currentAction, d->activeMenu);
 
#if !defined(Q_OS_DARWIN)
    // Send the leave event to the current menu - only active popup menu gets
    // mouse enter/leave events. Currently Cocoa is an exception, so disable
    // it there to avoid event duplication.
    if (underMouse()) {
        QEvent leaveEvent(QEvent::Leave);
        QCoreApplication::sendEvent(this, &leaveEvent);
    }
#endif
}
 
void QMenu::setNoReplayFor(QWidget *noReplayFor)
{
    d_func()->noReplayFor = noReplayFor;
}
 
QPlatformMenu *QMenu::platformMenu()
{
 
    return d_func()->platformMenu;
}
 
void QMenu::setPlatformMenu(QPlatformMenu *platformMenu)
{
    d_func()->setPlatformMenu(platformMenu);
    d_func()->syncPlatformMenu();
}
 
bool QMenu::separatorsCollapsible() const
{
    Q_D(const QMenu);
    return d->collapsibleSeparators;
}
 
void QMenu::setSeparatorsCollapsible(bool collapse)
{
    Q_D(QMenu);
    if (d->collapsibleSeparators == collapse)
        return;
 
    d->collapsibleSeparators = collapse;
    d->itemsDirty = 1;
    if (isVisible()) {
        d->updateActionRects();
        update();
    }
    if (!d->platformMenu.isNull())
        d->platformMenu->syncSeparatorsCollapsible(collapse);
}
 
bool QMenu::toolTipsVisible() const
{
    Q_D(const QMenu);
    return d->toolTipsVisible;
}
 
void QMenu::setToolTipsVisible(bool visible)
{
    Q_D(QMenu);
    if (d->toolTipsVisible == visible)
        return;
 
    d->toolTipsVisible = visible;
}
 
QT_END_NAMESPACE
 
// for private slots
#include "moc_qmenu.cpp"
#include "qmenu.moc"