qmenubar.cpp

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#include <qmenubar.h>

#include <qstyle.h>
#include <qlayout.h>
#include <qapplication.h>
#include <qdesktopwidget.h>
#ifndef QT_NO_ACCESSIBILITY
# include <qaccessible.h>
#endif
#include <qpainter.h>
#include <qstylepainter.h>
#include <qevent.h>
#include <qmainwindow.h>
#include <qtoolbar.h>
#include <qtoolbutton.h>
#include <qwhatsthis.h>
#ifdef Q_WS_X11
#include <qpluginloader.h>
#endif

#ifndef QT_NO_MENUBAR

#ifdef QT3_SUPPORT
#include <private/qaction_p.h>
#include <qmenudata.h>
#endif

#include "qmenu_p.h"
#include "qmenubar_p.h"
#include "qdebug.h"
#ifdef Q_WS_X11
#include "qmenubar_x11_p.h"
#endif

#ifdef Q_WS_WINCE
extern bool qt_wince_is_mobile(); //defined in qguifunctions_wce.cpp
#endif

#ifdef QT_SOFTKEYS_ENABLED
#include <private/qsoftkeymanager_p.h>
#endif

QT_BEGIN_NAMESPACE

class QMenuBarExtension : public QToolButton
{
public:
    explicit QMenuBarExtension(QWidget *parent);

    QSize sizeHint() const;
    void paintEvent(QPaintEvent *);
};

QMenuBarExtension::QMenuBarExtension(QWidget *parent)
    : QToolButton(parent)
{
    setObjectName(QLatin1String("qt_menubar_ext_button"));
    setAutoRaise(true);
#ifndef QT_NO_MENU
    setPopupMode(QToolButton::InstantPopup);
#endif
    setIcon(style()->standardIcon(QStyle::SP_ToolBarHorizontalExtensionButton, 0, parentWidget()));
}

void QMenuBarExtension::paintEvent(QPaintEvent *)
{
    QStylePainter p(this);
    QStyleOptionToolButton opt;
    initStyleOption(&opt);
    // We do not need to draw both extension arrows
    opt.features &= ~QStyleOptionToolButton::HasMenu;
    p.drawComplexControl(QStyle::CC_ToolButton, opt);
}


QSize QMenuBarExtension::sizeHint() const
{
    int ext = style()->pixelMetric(QStyle::PM_ToolBarExtensionExtent, 0, parentWidget());
    return QSize(ext, ext);
}


QAction *QMenuBarPrivate::actionAt(QPoint p) const
{
    for(int i = 0; i < actions.size(); ++i) {
        if(actionRect(actions.at(i)).contains(p))
            return actions.at(i);
    }
    return 0;
}

QRect QMenuBarPrivate::menuRect(bool extVisible) const
{
    Q_Q(const QMenuBar);

    int hmargin = q->style()->pixelMetric(QStyle::PM_MenuBarPanelWidth, 0, q);
    QRect result = q->rect();
    result.adjust(hmargin, 0, -hmargin, 0);

    if (extVisible) {
        if (q->isRightToLeft())
            result.setLeft(result.left() + extension->sizeHint().width());
        else
            result.setWidth(result.width() - extension->sizeHint().width());
    }

    if (leftWidget && leftWidget->isVisible()) {
        QSize sz = leftWidget->sizeHint();
        if (q->isRightToLeft())
            result.setRight(result.right() - sz.width());
        else
            result.setLeft(result.left() + sz.width());
    }

    if (rightWidget && rightWidget->isVisible()) {
        QSize sz = rightWidget->sizeHint();
        if (q->isRightToLeft())
            result.setLeft(result.left() + sz.width());
        else
            result.setRight(result.right() - sz.width());
    }

    return result;
}

bool QMenuBarPrivate::isVisible(QAction *action)
{
    return !hiddenActions.contains(action);
}

void QMenuBarPrivate::updateGeometries()
{
    Q_Q(QMenuBar);
    if(!itemsDirty)
        return;
    int q_width = q->width()-(q->style()->pixelMetric(QStyle::PM_MenuBarPanelWidth, 0, q)*2);
    int q_start = -1;
    if(
#ifdef Q_WS_X11
        platformMenuBar->allowCornerWidgets() &&
#endif
        (leftWidget || rightWidget)) {
        int vmargin = q->style()->pixelMetric(QStyle::PM_MenuBarVMargin, 0, q)
                      + q->style()->pixelMetric(QStyle::PM_MenuBarPanelWidth, 0, q);
        int hmargin = q->style()->pixelMetric(QStyle::PM_MenuBarHMargin, 0, q)
                      + q->style()->pixelMetric(QStyle::PM_MenuBarPanelWidth, 0, q);
        if (leftWidget && leftWidget->isVisible()) {
            QSize sz = leftWidget->sizeHint();
            q_width -= sz.width();
            q_start = sz.width();
            QPoint pos(hmargin, (q->height() - leftWidget->height()) / 2);
            QRect vRect = QStyle::visualRect(q->layoutDirection(), q->rect(), QRect(pos, sz));
            leftWidget->setGeometry(vRect);
        }
        if (rightWidget && rightWidget->isVisible()) {
            QSize sz = rightWidget->sizeHint();
            q_width -= sz.width();
            QPoint pos(q->width() - sz.width() - hmargin, vmargin);
            QRect vRect = QStyle::visualRect(q->layoutDirection(), q->rect(), QRect(pos, sz));
            rightWidget->setGeometry(vRect);
        }
    }

#ifdef Q_WS_MAC
    if(q->isNativeMenuBar()) {//nothing to see here folks, move along..
        itemsDirty = false;
        return;
    }
#endif
    calcActionRects(q_width, q_start);
    currentAction = 0;
#ifndef QT_NO_SHORTCUT
    if(
#ifdef Q_WS_X11
        !platformMenuBar->shortcutsHandledByNativeMenuBar() &&
#endif
        itemsDirty) {
        for(int j = 0; j < shortcutIndexMap.size(); ++j)
            q->releaseShortcut(shortcutIndexMap.value(j));
        shortcutIndexMap.resize(0); // faster than clear
        for(int i = 0; i < actions.count(); i++)
            shortcutIndexMap.append(q->grabShortcut(QKeySequence::mnemonic(actions.at(i)->text())));
    }
#endif
#ifdef Q_WS_X11
    if(q->isNativeMenuBar()) {//nothing to see here folks, move along..
        itemsDirty = false;
        return;
    }
#endif
    itemsDirty = false;

    hiddenActions.clear();
    //this is the menu rectangle without any extension
    QRect menuRect = this->menuRect(false);

    //we try to see if the actions will fit there
    bool hasHiddenActions = false;
    for (int i = 0; i < actions.count(); ++i) {
        const QRect &rect = actionRects.at(i);
        if (rect.isValid() && !menuRect.contains(rect)) {
            hasHiddenActions = true;
            break;
        }
    }

    //...and if not, determine the ones that fit on the menu with the extension visible
    if (hasHiddenActions) {
        menuRect = this->menuRect(true);
        for (int i = 0; i < actions.count(); ++i) {
            const QRect &rect = actionRects.at(i);
            if (rect.isValid() && !menuRect.contains(rect)) {
                hiddenActions.append(actions.at(i));
            }
        }
    }

    if (hiddenActions.count() > 0) {
        QMenu *pop = extension->menu();
        if (!pop) {
            pop = new QMenu(q);
            extension->setMenu(pop);
        }
        pop->clear();
        pop->addActions(hiddenActions);

        int vmargin = q->style()->pixelMetric(QStyle::PM_MenuBarVMargin, 0, q);
        int x = q->isRightToLeft()
                ? menuRect.left() - extension->sizeHint().width() + 1
                : menuRect.right();
        extension->setGeometry(x, vmargin, extension->sizeHint().width(), menuRect.height() - vmargin*2);
        extension->show();
    } else {
        extension->hide();
    }
    q->updateGeometry();
#ifdef QT3_SUPPORT
    if (parent) {
        QMenubarUpdatedEvent menubarUpdated(q);
        QApplication::sendEvent(parent, &menubarUpdated);
    }
#endif
}

QRect QMenuBarPrivate::actionRect(QAction *act) const
{
    const int index = actions.indexOf(act);

    //makes sure the geometries are up-to-date
    const_cast<QMenuBarPrivate*>(this)->updateGeometries();

    if (index < 0 || index >= actionRects.count())
        return QRect(); // that can happen in case of native menubar

    return actionRects.at(index);
}

void QMenuBarPrivate::focusFirstAction()
{
    if(!currentAction) {
        updateGeometries();
        int index = 0;
        while (index < actions.count() && actionRects.at(index).isNull()) ++index;
        if (index < actions.count())
            setCurrentAction(actions.at(index));
    }
}

void QMenuBarPrivate::setKeyboardMode(bool b)
{
    Q_Q(QMenuBar);
    if (b && !q->style()->styleHint(QStyle::SH_MenuBar_AltKeyNavigation, 0, q)) {
        setCurrentAction(0);
        return;
    }
    keyboardState = b;
    if(b) {
        QWidget *fw = QApplication::focusWidget();
        if (fw != q)
            keyboardFocusWidget = fw;
        focusFirstAction();
        q->setFocus(Qt::MenuBarFocusReason);
    } else {
        if(!popupState)
            setCurrentAction(0);
        if(keyboardFocusWidget) {
            if (QApplication::focusWidget() == q)
                keyboardFocusWidget->setFocus(Qt::MenuBarFocusReason);
            keyboardFocusWidget = 0;
        }
    }
    q->update();
}

void QMenuBarPrivate::popupAction(QAction *action, bool activateFirst)
{
    Q_Q(QMenuBar);
    if(!action || !action->menu() || closePopupMode)
        return;
    popupState = true;
    if (action->isEnabled() && action->menu()->isEnabled()) {
        closePopupMode = 0;
        activeMenu = action->menu();
        activeMenu->d_func()->causedPopup.widget = q;
        activeMenu->d_func()->causedPopup.action = action;

        QRect adjustedActionRect = actionRect(action);
        QPoint pos(q->mapToGlobal(QPoint(adjustedActionRect.left(), adjustedActionRect.bottom() + 1)));
        QSize popup_size = activeMenu->sizeHint();

        //we put the popup menu on the screen containing the bottom-center of the action rect
        QRect screenRect = QApplication::desktop()->screenGeometry(pos + QPoint(adjustedActionRect.width() / 2, 0));
        pos = QPoint(qMax(pos.x(), screenRect.x()), qMax(pos.y(), screenRect.y()));

        const bool fitUp = (q->mapToGlobal(adjustedActionRect.topLeft()).y() >= popup_size.height());
        const bool fitDown = (pos.y() + popup_size.height() <= screenRect.bottom());
        const bool rtl = q->isRightToLeft();
        const int actionWidth = adjustedActionRect.width();

        if (!fitUp && !fitDown) { //we should shift the menu
            bool shouldShiftToRight = !rtl;
            if (rtl && popup_size.width() > pos.x())
                shouldShiftToRight = true;
            else if (actionWidth + popup_size.width() + pos.x() > screenRect.right())
                shouldShiftToRight = false;

            if (shouldShiftToRight) {
                pos.rx() += actionWidth + (rtl ? popup_size.width() : 0);
            } else {
                //shift to left
                if (!rtl)
                    pos.rx() -= popup_size.width();
            }
        } else if (rtl) {
            pos.rx() += actionWidth;
        }

        if(!defaultPopDown || (fitUp && !fitDown))
            pos.setY(qMax(screenRect.y(), q->mapToGlobal(QPoint(0, adjustedActionRect.top()-popup_size.height())).y()));
        activeMenu->popup(pos);
        if(activateFirst)
            activeMenu->d_func()->setFirstActionActive();
    }
    q->update(actionRect(action));
}

void QMenuBarPrivate::setCurrentAction(QAction *action, bool popup, bool activateFirst)
{
    if(currentAction == action && popup == popupState)
        return;

    autoReleaseTimer.stop();

    doChildEffects = (popup && !activeMenu);
    Q_Q(QMenuBar);
    QWidget *fw = 0;
    if(QMenu *menu = activeMenu) {
        activeMenu = 0;
        if (popup) {
            fw = q->window()->focusWidget();
            q->setFocus(Qt::NoFocusReason);
        }
        menu->hide();
    }

    if(currentAction)
        q->update(actionRect(currentAction));

    popupState = popup;
#ifndef QT_NO_STATUSTIP
    QAction *previousAction = currentAction;
#endif
    currentAction = action;
    if (action) {
        activateAction(action, QAction::Hover);
        if(popup)
            popupAction(action, activateFirst);
        q->update(actionRect(action));
#ifndef QT_NO_STATUSTIP
    }  else if (previousAction) {
        QString empty;
        QStatusTipEvent tip(empty);
        QApplication::sendEvent(q, &tip);
#endif
    }
    if (fw)
        fw->setFocus(Qt::NoFocusReason);
}

void QMenuBarPrivate::calcActionRects(int max_width, int start) const
{
    Q_Q(const QMenuBar);

    if(!itemsDirty)
        return;

    //let's reinitialize the buffer
    actionRects.resize(actions.count());
    actionRects.fill(QRect());

    const QStyle *style = q->style();

    const int itemSpacing = style->pixelMetric(QStyle::PM_MenuBarItemSpacing, 0, q);
    int max_item_height = 0, separator = -1, separator_start = 0, separator_len = 0;

    //calculate size
    const QFontMetrics fm = q->fontMetrics();
    const int hmargin = style->pixelMetric(QStyle::PM_MenuBarHMargin, 0, q),
              vmargin = style->pixelMetric(QStyle::PM_MenuBarVMargin, 0, q),
                icone = style->pixelMetric(QStyle::PM_SmallIconSize, 0, q);
    for(int i = 0; i < actions.count(); i++) {
        QAction *action = actions.at(i);
        if(!action->isVisible())
            continue;

        QSize sz;

        //calc what I think the size is..
        if(action->isSeparator()) {
            if (style->styleHint(QStyle::SH_DrawMenuBarSeparator, 0, q))
                separator = i;
            continue; //we don't really position these!
        } else {
            const QString s = action->text();
            QIcon is = action->icon();
            // If an icon is set, only the icon is visible
            if (!is.isNull())
                sz = sz.expandedTo(QSize(icone, icone));
            else if (!s.isEmpty())
                sz = fm.size(Qt::TextShowMnemonic, s);
        }

        //let the style modify the above size..
        QStyleOptionMenuItem opt;
        q->initStyleOption(&opt, action);
        sz = q->style()->sizeFromContents(QStyle::CT_MenuBarItem, &opt, sz, q);

        if(!sz.isEmpty()) {
            { //update the separator state
                int iWidth = sz.width() + itemSpacing;
                if(separator == -1)
                    separator_start += iWidth;
                else
                    separator_len += iWidth;
            }
            //maximum height
            max_item_height = qMax(max_item_height, sz.height());
            //append
            actionRects[i] = QRect(0, 0, sz.width(), sz.height());
        }
    }

    //calculate position
    const int fw = q->style()->pixelMetric(QStyle::PM_MenuBarPanelWidth, 0, q);
    int x = fw + ((start == -1) ? hmargin : start) + itemSpacing;
    int y = fw + vmargin;
    for(int i = 0; i < actions.count(); i++) {
        QRect &rect = actionRects[i];
        if (rect.isNull())
            continue;

        //resize
        rect.setHeight(max_item_height);

        //move
        if(separator != -1 && i >= separator) { //after the separator
            int left = (max_width - separator_len - hmargin - itemSpacing) + (x - separator_start - hmargin);
            if(left < separator_start) { //wrap
                separator_start = x = hmargin;
                y += max_item_height;
            }
            rect.moveLeft(left);
        } else {
            rect.moveLeft(x);
        }
        rect.moveTop(y);

        //keep moving along..
        x += rect.width() + itemSpacing;

        //make sure we follow the layout direction
        rect = QStyle::visualRect(q->layoutDirection(), q->rect(), rect);
    }
}

void QMenuBarPrivate::activateAction(QAction *action, QAction::ActionEvent action_e)
{
    Q_Q(QMenuBar);
    if (!action || !action->isEnabled())
        return;
    action->activate(action_e);
    if (action_e == QAction::Hover)
        action->showStatusText(q);

//     if(action_e == QAction::Trigger)
//         emit q->activated(action);
//     else if(action_e == QAction::Hover)
//         emit q->highlighted(action);
}


void QMenuBarPrivate::_q_actionTriggered()
{
    Q_Q(QMenuBar);
    if (QAction *action = qobject_cast<QAction *>(q->sender())) {
        emit q->triggered(action);
#ifdef QT3_SUPPORT
        emit q->activated(q->findIdForAction(action));
#endif
    }
}

void QMenuBarPrivate::_q_actionHovered()
{
    Q_Q(QMenuBar);
    if (QAction *action = qobject_cast<QAction *>(q->sender())) {
        emit q->hovered(action);
#ifndef QT_NO_ACCESSIBILITY
        if (QAccessible::isActive()) {
            int actionIndex = actions.indexOf(action);
            ++actionIndex;
            QAccessible::updateAccessibility(q, actionIndex, QAccessible::Focus);
            QAccessible::updateAccessibility(q, actionIndex, QAccessible::Selection);
        }
#endif //QT_NO_ACCESSIBILITY
#ifdef QT3_SUPPORT
        emit q->highlighted(q->findIdForAction(action));
#endif
    }
}

void QMenuBar::initStyleOption(QStyleOptionMenuItem *option, const QAction *action) const
{
    if (!option || !action)
        return;
    Q_D(const QMenuBar);
    option->palette = palette();
    option->state = QStyle::State_None;
    if (isEnabled() && action->isEnabled())
        option->state |= QStyle::State_Enabled;
    else
        option->palette.setCurrentColorGroup(QPalette::Disabled);
    option->fontMetrics = fontMetrics();
    if (d->currentAction && d->currentAction == action) {
        option->state |= QStyle::State_Selected;
        if (d->popupState && !d->closePopupMode)
            option->state |= QStyle::State_Sunken;
    }
    if (hasFocus() || d->currentAction)
        option->state |= QStyle::State_HasFocus;
    option->menuRect = rect();
    option->menuItemType = QStyleOptionMenuItem::Normal;
    option->checkType = QStyleOptionMenuItem::NotCheckable;
    option->text = action->text();
    option->icon = action->icon();
}

void QMenuBarPrivate::init()
{
    Q_Q(QMenuBar);
    q->setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::Minimum);
    q->setAttribute(Qt::WA_CustomWhatsThis);
#ifdef Q_WS_MAC
    macCreateMenuBar(q->parentWidget());
    if(mac_menubar)
        q->hide();
#endif
#ifdef Q_WS_WINCE
    if (qt_wince_is_mobile()) {
        wceCreateMenuBar(q->parentWidget());
        if(wce_menubar)
            q->hide();
    }
    else {
        QApplication::setAttribute(Qt::AA_DontUseNativeMenuBar, true);
    }
#endif
#ifdef Q_WS_X11
    platformMenuBar = qt_guiPlatformMenuBarFactory()->create();
    platformMenuBar->init(q);
#endif

    q->setBackgroundRole(QPalette::Button);
    oldWindow = oldParent = 0;
#ifdef QT3_SUPPORT
    doAutoResize = false;
#endif
#ifdef QT_SOFTKEYS_ENABLED
    menuBarAction = 0;
#endif
#ifdef Q_WS_X11
    cornerWidgetToolBar = 0;
    cornerWidgetContainer = 0;
#endif
    handleReparent();
    q->setMouseTracking(q->style()->styleHint(QStyle::SH_MenuBar_MouseTracking, 0, q));

    extension = new QMenuBarExtension(q);
    extension->setFocusPolicy(Qt::NoFocus);
    extension->hide();
}

//Gets the next action for keyboard navigation
QAction *QMenuBarPrivate::getNextAction(const int _start, const int increment) const
{
    Q_Q(const QMenuBar);
    const_cast<QMenuBarPrivate*>(this)->updateGeometries();
    bool allowActiveAndDisabled = q->style()->styleHint(QStyle::SH_Menu_AllowActiveAndDisabled, 0, q);
    const int start = (_start == -1 && increment == -1) ? actions.count() : _start;
    const int end =  increment == -1 ? 0 : actions.count() - 1;

    for (int i = start; i != end;) {
        i += increment;
        QAction *current = actions.at(i);
        if (!actionRects.at(i).isNull() && (allowActiveAndDisabled || current->isEnabled()))
            return current;
    }

    if (_start != -1) //let's try from the beginning or the end
        return getNextAction(-1, increment);

    return 0;
}

QMenuBar::QMenuBar(QWidget *parent) : QWidget(*new QMenuBarPrivate, parent, 0)
{
    Q_D(QMenuBar);
    d->init();
}

#ifdef QT3_SUPPORT

QMenuBar::QMenuBar(QWidget *parent, const char *name) : QWidget(*new QMenuBarPrivate, parent, 0)
{
    Q_D(QMenuBar);
    d->init();
    setObjectName(QString::fromAscii(name));
}
#endif

QMenuBar::~QMenuBar()
{
#ifdef Q_WS_MAC
    Q_D(QMenuBar);
    d->macDestroyMenuBar();
#endif
#ifdef Q_WS_WINCE
    Q_D(QMenuBar);
    if (qt_wince_is_mobile())
        d->wceDestroyMenuBar();
#endif
#ifdef Q_WS_S60
    Q_D(QMenuBar);
    d->symbianDestroyMenuBar();
#endif
#ifdef Q_WS_X11
    Q_D(QMenuBar);
    delete d->cornerWidgetToolBar;
#endif
}

QAction *QMenuBar::addAction(const QString &text)
{
    QAction *ret = new QAction(text, this);
    addAction(ret);
    return ret;
}

QAction *QMenuBar::addAction(const QString &text, const QObject *receiver, const char* member)
{
    QAction *ret = new QAction(text, this);
    QObject::connect(ret, SIGNAL(triggered(bool)), receiver, member);
    addAction(ret);
    return ret;
}

QMenu *QMenuBar::addMenu(const QString &title)
{
    QMenu *menu = new QMenu(title, this);
    addAction(menu->menuAction());
    return menu;
}

QMenu *QMenuBar::addMenu(const QIcon &icon, const QString &title)
{
    QMenu *menu = new QMenu(title, this);
    menu->setIcon(icon);
    addAction(menu->menuAction());
    return menu;
}

QAction *QMenuBar::addMenu(QMenu *menu)
{
    QAction *action = menu->menuAction();
    addAction(action);
    return action;
}

QAction *QMenuBar::addSeparator()
{
    QAction *ret = new QAction(this);
    ret->setSeparator(true);
    addAction(ret);
    return ret;
}

QAction *QMenuBar::insertSeparator(QAction *before)
{
    QAction *action = new QAction(this);
    action->setSeparator(true);
    insertAction(before, action);
    return action;
}

QAction *QMenuBar::insertMenu(QAction *before, QMenu *menu)
{
    QAction *action = menu->menuAction();
    insertAction(before, action);
    return action;
}

QAction *QMenuBar::activeAction() const
{
    Q_D(const QMenuBar);
    return d->currentAction;
}

void QMenuBar::setActiveAction(QAction *act)
{
    Q_D(QMenuBar);
    d->setCurrentAction(act, true, false);
}


void QMenuBar::clear()
{
    QList<QAction*> acts = actions();
    for(int i = 0; i < acts.size(); i++)
        removeAction(acts[i]);
}

void QMenuBar::setDefaultUp(bool b)
{
    Q_D(QMenuBar);
    d->defaultPopDown = !b;
}

bool QMenuBar::isDefaultUp() const
{
    Q_D(const QMenuBar);
    return !d->defaultPopDown;
}

void QMenuBar::resizeEvent(QResizeEvent *)
{
    Q_D(QMenuBar);
    d->itemsDirty = true;
    d->updateGeometries();
}

void QMenuBar::paintEvent(QPaintEvent *e)
{
    Q_D(QMenuBar);
    QPainter p(this);
    QRegion emptyArea(rect());

    //draw the items
    for (int i = 0; i < d->actions.count(); ++i) {
        QAction *action = d->actions.at(i);
        QRect adjustedActionRect = d->actionRect(action);
        if (adjustedActionRect.isEmpty() || !d->isVisible(action))
            continue;
        if(!e->rect().intersects(adjustedActionRect))
            continue;

        emptyArea -= adjustedActionRect;
        QStyleOptionMenuItem opt;
        initStyleOption(&opt, action);
        opt.rect = adjustedActionRect;
        p.setClipRect(adjustedActionRect);
        style()->drawControl(QStyle::CE_MenuBarItem, &opt, &p, this);
    }
     //draw border
    if(int fw = style()->pixelMetric(QStyle::PM_MenuBarPanelWidth, 0, this)) {
        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_MenuBarPanelWidth);
        frame.midLineWidth = 0;
        style()->drawPrimitive(QStyle::PE_PanelMenuBar, &frame, &p, this);
    }
    p.setClipRegion(emptyArea);
    QStyleOptionMenuItem menuOpt;
    menuOpt.palette = palette();
    menuOpt.state = QStyle::State_None;
    menuOpt.menuItemType = QStyleOptionMenuItem::EmptyArea;
    menuOpt.checkType = QStyleOptionMenuItem::NotCheckable;
    menuOpt.rect = rect();
    menuOpt.menuRect = rect();
    style()->drawControl(QStyle::CE_MenuBarEmptyArea, &menuOpt, &p, this);
}

void QMenuBar::setVisible(bool visible)
{
#ifdef Q_WS_X11
    Q_D(QMenuBar);
    d->platformMenuBar->setVisible(visible);
#else
#if defined(Q_WS_MAC) || defined(Q_OS_WINCE) || defined(Q_WS_S60)
    if (isNativeMenuBar()) {
#ifndef Q_WS_S60
        if (!visible)
            QWidget::setVisible(false);
#endif
        return;
    }
#endif
    QWidget::setVisible(visible);
#endif // Q_WS_X11
}

void QMenuBar::mousePressEvent(QMouseEvent *e)
{
    Q_D(QMenuBar);
    if(e->button() != Qt::LeftButton)
        return;

    d->mouseDown = true;

    QAction *action = d->actionAt(e->pos());
    if (!action || !d->isVisible(action)) {
        d->setCurrentAction(0);
#ifndef QT_NO_WHATSTHIS
        if (QWhatsThis::inWhatsThisMode())
            QWhatsThis::showText(e->globalPos(), d->whatsThis, this);
#endif
        return;
    }

    if(d->currentAction == action && d->popupState) {
        if(QMenu *menu = d->activeMenu) {
            d->activeMenu = 0;
            menu->hide();
        }
#ifdef Q_WS_WIN
        if((d->closePopupMode = style()->styleHint(QStyle::SH_MenuBar_DismissOnSecondClick)))
            update(d->actionRect(action));
#endif
    } else {
        d->setCurrentAction(action, true);
    }
}

void QMenuBar::mouseReleaseEvent(QMouseEvent *e)
{
    Q_D(QMenuBar);
    if(e->button() != Qt::LeftButton || !d->mouseDown)
        return;

    d->mouseDown = false;
    QAction *action = d->actionAt(e->pos());
    if((d->closePopupMode && action == d->currentAction) || !action || !action->menu()) {
        //we set the current action before activating
        //so that we let the leave event set the current back to 0
        d->setCurrentAction(action, false);
        if(action)
            d->activateAction(action, QAction::Trigger);
    }
    d->closePopupMode = 0;
}

void QMenuBar::keyPressEvent(QKeyEvent *e)
{
    Q_D(QMenuBar);
    d->updateGeometries();
    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;
    }
    if(key == Qt::Key_Tab) //means right
        key = Qt::Key_Right;
    else if(key == Qt::Key_Backtab) //means left
        key = Qt::Key_Left;

    bool key_consumed = false;
    switch(key) {
    case Qt::Key_Up:
    case Qt::Key_Down:
    case Qt::Key_Enter:
    case Qt::Key_Space:
    case Qt::Key_Return: {
        if(!style()->styleHint(QStyle::SH_MenuBar_AltKeyNavigation, 0, this) || !d->currentAction)
           break;
        if(d->currentAction->menu()) {
            d->popupAction(d->currentAction, true);
        } else if(key == Qt::Key_Enter || key == Qt::Key_Return || key == Qt::Key_Space) {
            d->activateAction(d->currentAction, QAction::Trigger);
            d->setCurrentAction(d->currentAction, false);
            d->setKeyboardMode(false);
        }
        key_consumed = true;
        break; }

    case Qt::Key_Right:
    case Qt::Key_Left: {
        if(d->currentAction) {
            int index = d->actions.indexOf(d->currentAction);
            if (QAction *nextAction = d->getNextAction(index, key == Qt::Key_Left ? -1 : +1)) {
                d->setCurrentAction(nextAction, d->popupState, true);
                key_consumed = true;
            }
        }
        break; }

    case Qt::Key_Escape:
        d->setCurrentAction(0);
        d->setKeyboardMode(false);
        key_consumed = true;
        break;

    default:
        key_consumed = false;
    }

    if(!key_consumed &&
       (!e->modifiers() ||
        (e->modifiers()&(Qt::MetaModifier|Qt::AltModifier))) && e->text().length()==1 && !d->popupState) {
        int clashCount = 0;
        QAction *first = 0, *currentSelected = 0, *firstAfterCurrent = 0;
        {
            QChar c = e->text()[0].toUpper();
            for(int i = 0; i < d->actions.size(); ++i) {
                if (d->actionRects.at(i).isNull())
                    continue;
                QAction *act = d->actions.at(i);
                QString s = act->text();
                if(!s.isEmpty()) {
                    int ampersand = s.indexOf(QLatin1Char('&'));
                    if(ampersand >= 0) {
                        if(s[ampersand+1].toUpper() == c) {
                            clashCount++;
                            if(!first)
                                first = act;
                            if(act == d->currentAction)
                                currentSelected = act;
                            else if (!firstAfterCurrent && currentSelected)
                                firstAfterCurrent = act;
                        }
                    }
                }
            }
        }
        QAction *next_action = 0;
        if(clashCount >= 1) {
            if(clashCount == 1 || !d->currentAction || (currentSelected && !firstAfterCurrent))
                next_action = first;
            else
                next_action = firstAfterCurrent;
        }
        if(next_action) {
            key_consumed = true;
            d->setCurrentAction(next_action, true, true);
        }
    }
    if(key_consumed)
        e->accept();
    else
        e->ignore();
}

void QMenuBar::mouseMoveEvent(QMouseEvent *e)
{
    Q_D(QMenuBar);
    if (!(e->buttons() & Qt::LeftButton))
        d->mouseDown = false;
    bool popupState = d->popupState || d->mouseDown;
    QAction *action = d->actionAt(e->pos());
    if ((action && d->isVisible(action)) || !popupState)
        d->setCurrentAction(action, popupState);
}

void QMenuBar::leaveEvent(QEvent *)
{
    Q_D(QMenuBar);
    if((!hasFocus() && !d->popupState) ||
        (d->currentAction && d->currentAction->menu() == 0))
        d->setCurrentAction(0);
}

void QMenuBar::actionEvent(QActionEvent *e)
{
    Q_D(QMenuBar);
    d->itemsDirty = true;
#ifdef Q_WS_X11
    d->platformMenuBar->actionEvent(e);
#endif
#if defined (Q_WS_MAC) || defined(Q_OS_WINCE) || defined(Q_WS_S60)
    if (isNativeMenuBar()) {
#ifdef Q_WS_MAC
        QMenuBarPrivate::QMacMenuBarPrivate *nativeMenuBar = d->mac_menubar;
#elif defined(Q_WS_S60)
        QMenuBarPrivate::QSymbianMenuBarPrivate *nativeMenuBar = d->symbian_menubar;
#else
        QMenuBarPrivate::QWceMenuBarPrivate *nativeMenuBar = d->wce_menubar;
#endif
        if (!nativeMenuBar)
            return;
        if(e->type() == QEvent::ActionAdded)
            nativeMenuBar->addAction(e->action(), e->before());
        else if(e->type() == QEvent::ActionRemoved)
            nativeMenuBar->removeAction(e->action());
        else if(e->type() == QEvent::ActionChanged)
            nativeMenuBar->syncAction(e->action());
    }
#endif

    if(e->type() == QEvent::ActionAdded) {
        connect(e->action(), SIGNAL(triggered()), this, SLOT(_q_actionTriggered()));
        connect(e->action(), SIGNAL(hovered()), this, SLOT(_q_actionHovered()));
    } else if(e->type() == QEvent::ActionRemoved) {
        e->action()->disconnect(this);
    }
    if (isVisible()) {
        d->updateGeometries();
        update();
    }
}

void QMenuBar::focusInEvent(QFocusEvent *)
{
    Q_D(QMenuBar);
    if(d->keyboardState)
        d->focusFirstAction();
}

void QMenuBar::focusOutEvent(QFocusEvent *)
{
    Q_D(QMenuBar);
    if(!d->popupState) {
        d->setCurrentAction(0);
        d->setKeyboardMode(false);
    }
}

void QMenuBar::timerEvent (QTimerEvent *e)
{
    Q_D(QMenuBar);
    if (e->timerId() == d->autoReleaseTimer.timerId()) {
        d->autoReleaseTimer.stop();
        d->setCurrentAction(0);
    }
    QWidget::timerEvent(e);
}


void QMenuBarPrivate::handleReparent()
{
    Q_Q(QMenuBar);
    QWidget *newParent = q->parentWidget();
    //Note: if parent is reparented, then window may change even if parent doesn't

    // we need to install an event filter on parent, and remove the old one

    if (oldParent != newParent) {
        if (oldParent)
            oldParent->removeEventFilter(q);
        if (newParent)
            newParent->installEventFilter(q);
    }

    //we also need event filter on top-level (for shortcuts)
    QWidget *newWindow = newParent ? newParent->window() : 0;

    if (oldWindow != newWindow) {
        if (oldParent && oldParent != oldWindow)
            oldWindow->removeEventFilter(q);

        if (newParent && newParent != newWindow)
            newWindow->installEventFilter(q);
    }

#ifdef Q_WS_X11
    platformMenuBar->handleReparent(oldParent, newParent, oldWindow, newWindow);
#endif

    oldParent = newParent;
    oldWindow = newWindow;

#ifdef Q_WS_MAC
    if (q->isNativeMenuBar() && !macWidgetHasNativeMenubar(newParent)) {
        // If the new parent got a native menubar from before, keep that
        // menubar rather than replace it with this one (because a parents
        // menubar has precedence over children menubars).
        macDestroyMenuBar();
        macCreateMenuBar(newParent);
    }
#endif

#ifdef Q_WS_WINCE
    if (qt_wince_is_mobile() && wce_menubar)
        wce_menubar->rebuild();
#endif
#ifdef Q_WS_S60

    // Construct symbian_menubar when this code path is entered first time
    // and when newParent != NULL
    if (!symbian_menubar)
        symbianCreateMenuBar(newParent);

    // Reparent and rebuild menubar when parent is changed
    if (symbian_menubar) {
        if (oldParent != newParent)
            reparentMenuBar(oldParent, newParent);
        q->hide();
        symbian_menubar->rebuild();
    }

#ifdef QT_SOFTKEYS_ENABLED
    // Constuct menuBarAction when this code path is entered first time
    if (!menuBarAction) {
        if (newParent) {
            menuBarAction = QSoftKeyManager::createAction(QSoftKeyManager::MenuSoftKey, newParent);
            newParent->addAction(menuBarAction);
        }
    } else {
        // If reparenting i.e. we already have menuBarAction, remove it from old parent
        // and add for a new parent
        if (oldParent)
            oldParent->removeAction(menuBarAction);
        if (newParent)
            newParent->addAction(menuBarAction);
    }
#endif // QT_SOFTKEYS_ENABLED
#endif // Q_WS_S60
}

#ifdef QT3_SUPPORT

void QMenuBar::setAutoGeometry(bool b)
{
    Q_D(QMenuBar);
    d->doAutoResize = b;
}

bool QMenuBar::autoGeometry() const
{
    Q_D(const QMenuBar);
    return d->doAutoResize;
}
#endif

void QMenuBar::changeEvent(QEvent *e)
{
    Q_D(QMenuBar);
    if(e->type() == QEvent::StyleChange) {
        d->itemsDirty = true;
        setMouseTracking(style()->styleHint(QStyle::SH_MenuBar_MouseTracking, 0, this));
        if(parentWidget())
            resize(parentWidget()->width(), heightForWidth(parentWidget()->width()));
        d->updateGeometries();
    } else if (e->type() == QEvent::ParentChange) {
        d->handleReparent();
    } else if (e->type() == QEvent::FontChange
               || e->type() == QEvent::ApplicationFontChange) {
        d->itemsDirty = true;
        d->updateGeometries();
#ifdef QT_SOFTKEYS_ENABLED
    } else if (e->type() == QEvent::LanguageChange) {
        if (d->menuBarAction)
            d->menuBarAction->setText(QSoftKeyManager::standardSoftKeyText(QSoftKeyManager::MenuSoftKey));
#endif
    }

    QWidget::changeEvent(e);
}

bool QMenuBar::event(QEvent *e)
{
    Q_D(QMenuBar);
    switch (e->type()) {
    case QEvent::KeyPress: {
        QKeyEvent *ke = (QKeyEvent*)e;
#if 0
        if(!d->keyboardState) { //all keypresses..
            d->setCurrentAction(0);
            return ;
        }
#endif
        if(ke->key() == Qt::Key_Tab || ke->key() == Qt::Key_Backtab) {
            keyPressEvent(ke);
            return true;
        }

    } break;
#ifndef QT_NO_SHORTCUT
    case QEvent::Shortcut: {
        QShortcutEvent *se = static_cast<QShortcutEvent *>(e);
        int shortcutId = se->shortcutId();
        for(int j = 0; j < d->shortcutIndexMap.size(); ++j) {
            if (shortcutId == d->shortcutIndexMap.value(j))
                d->_q_internalShortcutActivated(j);
        }
    } break;
#endif
    case QEvent::Show:
#ifdef QT3_SUPPORT
        if(QWidget *p = parentWidget()) {
            // If itemsDirty == true, updateGeometries sends the MenubarUpdated event.
            if (!d->itemsDirty) {
                QMenubarUpdatedEvent menubarUpdated(this);
                QApplication::sendEvent(p, &menubarUpdated);
            }
        }
#endif
        d->_q_updateLayout();
    break;
    case QEvent::ShortcutOverride: {
        QKeyEvent *kev = static_cast<QKeyEvent*>(e);
        //we only filter out escape if there is a current action
        if (kev->key() == Qt::Key_Escape && d->currentAction) {
            e->accept();
            return true;
        }
    }
    break;

#ifdef QT3_SUPPORT
    case QEvent::Hide: {
        if(QWidget *p = parentWidget()) {
            QMenubarUpdatedEvent menubarUpdated(this);
            QApplication::sendEvent(p, &menubarUpdated);
        }
    } break;
#endif

#ifndef QT_NO_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
    case QEvent::LayoutDirectionChange:
        d->_q_updateLayout();
        break;
    default:
        break;
    }
    return QWidget::event(e);
}

bool QMenuBar::eventFilter(QObject *object, QEvent *event)
{
    Q_D(QMenuBar);
#ifdef Q_WS_X11
    if (d->platformMenuBar->menuBarEventFilter(object, event)) {
        return true;
    }
#endif
    if (object == parent() && object) {
#ifdef QT3_SUPPORT
        if (d->doAutoResize && event->type() == QEvent::Resize) {
            QResizeEvent *e = (QResizeEvent *)event;
            int w = e->size().width();
            setGeometry(0, y(), w, heightForWidth(w));
            return false;
        }
#endif
        if (event->type() == QEvent::ParentChange) //GrandparentChange
            d->handleReparent();
    }
    if (object == d->leftWidget || object == d->rightWidget) {
        switch (event->type()) {
        case QEvent::ShowToParent:
        case QEvent::HideToParent:
            d->_q_updateLayout();
            break;
        default:
            break;
        }
    }

    if (style()->styleHint(QStyle::SH_MenuBar_AltKeyNavigation, 0, this)) {
        if (d->altPressed) {
            switch (event->type()) {
            case QEvent::KeyPress:
            case QEvent::KeyRelease:
            {
                QKeyEvent *kev = static_cast<QKeyEvent*>(event);
                if (kev->key() == Qt::Key_Alt || kev->key() == Qt::Key_Meta) {
                    if (event->type() == QEvent::KeyPress) // Alt-press does not interest us, we have the shortcut-override event
                        break;
                    d->setKeyboardMode(!d->keyboardState);
                }
            }
            // fall through
            case QEvent::MouseButtonPress:
            case QEvent::MouseButtonRelease:
            case QEvent::MouseMove:
            case QEvent::FocusIn:
            case QEvent::FocusOut:
            case QEvent::ActivationChange:
                d->altPressed = false;
                qApp->removeEventFilter(this);
                break;
            default:
                break;
            }
        } else if (isVisible()) {
            if (event->type() == QEvent::ShortcutOverride) {
                QKeyEvent *kev = static_cast<QKeyEvent*>(event);
                if ((kev->key() == Qt::Key_Alt || kev->key() == Qt::Key_Meta)
                    && kev->modifiers() == Qt::AltModifier) {
                    d->altPressed = true;
                    qApp->installEventFilter(this);
                }
            }
        }
    }

    return false;
}

QAction *QMenuBar::actionAt(const QPoint &pt) const
{
    Q_D(const QMenuBar);
    return d->actionAt(pt);
}

QRect QMenuBar::actionGeometry(QAction *act) const
{
    Q_D(const QMenuBar);
    return d->actionRect(act);
}

QSize QMenuBar::minimumSizeHint() const
{
    Q_D(const QMenuBar);
#if defined(Q_WS_MAC) || defined(Q_WS_WINCE) || defined(Q_WS_S60) || defined(Q_WS_X11)
    const bool as_gui_menubar = !isNativeMenuBar();
#else
    const bool as_gui_menubar = true;
#endif

    ensurePolished();
    QSize ret(0, 0);
    const_cast<QMenuBarPrivate*>(d)->updateGeometries();
    const int hmargin = style()->pixelMetric(QStyle::PM_MenuBarHMargin, 0, this);
    const int vmargin = style()->pixelMetric(QStyle::PM_MenuBarVMargin, 0, this);
    int fw = style()->pixelMetric(QStyle::PM_MenuBarPanelWidth, 0, this);
    int spaceBelowMenuBar = style()->styleHint(QStyle::SH_MainWindow_SpaceBelowMenuBar, 0, this);
    if(as_gui_menubar) {
        int w = parentWidget() ? parentWidget()->width() : QApplication::desktop()->width();
        d->calcActionRects(w - (2 * fw), 0);
        for (int i = 0; ret.isNull() && i < d->actions.count(); ++i)
            ret = d->actionRects.at(i).size();
        if (!d->extension->isHidden())
            ret += QSize(d->extension->sizeHint().width(), 0);
        ret += QSize(2*fw + hmargin, 2*fw + vmargin);
    }
    int margin = 2*vmargin + 2*fw + spaceBelowMenuBar;
#ifdef Q_WS_X11
    if (d->platformMenuBar->allowCornerWidgets()) {
#endif
    if(d->leftWidget) {
        QSize sz = d->leftWidget->minimumSizeHint();
        ret.setWidth(ret.width() + sz.width());
        if(sz.height() + margin > ret.height())
            ret.setHeight(sz.height() + margin);
    }
    if(d->rightWidget) {
        QSize sz = d->rightWidget->minimumSizeHint();
        ret.setWidth(ret.width() + sz.width());
        if(sz.height() + margin > ret.height())
            ret.setHeight(sz.height() + margin);
    }
#ifdef Q_WS_X11
    }
#endif
    if(as_gui_menubar) {
        QStyleOptionMenuItem opt;
        opt.rect = rect();
        opt.menuRect = rect();
        opt.state = QStyle::State_None;
        opt.menuItemType = QStyleOptionMenuItem::Normal;
        opt.checkType = QStyleOptionMenuItem::NotCheckable;
        opt.palette = palette();
        return (style()->sizeFromContents(QStyle::CT_MenuBar, &opt,
                                         ret.expandedTo(QApplication::globalStrut()),
                                         this));
    }
    return ret;
}

QSize QMenuBar::sizeHint() const
{
    Q_D(const QMenuBar);
#if defined(Q_WS_MAC) || defined(Q_WS_WINCE) || defined(Q_WS_S60) || defined(Q_WS_X11)
    const bool as_gui_menubar = !isNativeMenuBar();
#else
    const bool as_gui_menubar = true;
#endif


    ensurePolished();
    QSize ret(0, 0);
    const_cast<QMenuBarPrivate*>(d)->updateGeometries();
    const int hmargin = style()->pixelMetric(QStyle::PM_MenuBarHMargin, 0, this);
    const int vmargin = style()->pixelMetric(QStyle::PM_MenuBarVMargin, 0, this);
    int fw = style()->pixelMetric(QStyle::PM_MenuBarPanelWidth, 0, this);
    int spaceBelowMenuBar = style()->styleHint(QStyle::SH_MainWindow_SpaceBelowMenuBar, 0, this);
    if(as_gui_menubar) {
        const int w = parentWidget() ? parentWidget()->width() : QApplication::desktop()->width();
        d->calcActionRects(w - (2 * fw), 0);
        for (int i = 0; i < d->actionRects.count(); ++i) {
            const QRect &actionRect = d->actionRects.at(i);
            ret = ret.expandedTo(QSize(actionRect.x() + actionRect.width(), actionRect.y() + actionRect.height()));
        }
        //the action geometries already contain the top and left
        //margins. So we only need to add those from right and bottom.
        ret += QSize(fw + hmargin, fw + vmargin);
    }
    int margin = 2*vmargin + 2*fw + spaceBelowMenuBar;
#ifdef Q_WS_X11
    if(d->platformMenuBar->allowCornerWidgets()) {
#endif
    if(d->leftWidget) {
        QSize sz = d->leftWidget->sizeHint();
        ret.setWidth(ret.width() + sz.width());
        if(sz.height() + margin > ret.height())
            ret.setHeight(sz.height() + margin);
    }
    if(d->rightWidget) {
        QSize sz = d->rightWidget->sizeHint();
        ret.setWidth(ret.width() + sz.width());
        if(sz.height() + margin > ret.height())
            ret.setHeight(sz.height() + margin);
    }
#ifdef Q_WS_X11
    }
#endif
    if(as_gui_menubar) {
        QStyleOptionMenuItem opt;
        opt.rect = rect();
        opt.menuRect = rect();
        opt.state = QStyle::State_None;
        opt.menuItemType = QStyleOptionMenuItem::Normal;
        opt.checkType = QStyleOptionMenuItem::NotCheckable;
        opt.palette = palette();
        return (style()->sizeFromContents(QStyle::CT_MenuBar, &opt,
                                         ret.expandedTo(QApplication::globalStrut()),
                                         this));
    }
    return ret;
}

int QMenuBar::heightForWidth(int) const
{
    Q_D(const QMenuBar);
#if defined(Q_WS_MAC) || defined(Q_WS_WINCE) || defined(Q_WS_S60) || defined(Q_WS_X11)
    const bool as_gui_menubar = !isNativeMenuBar();
#else
    const bool as_gui_menubar = true;
#endif

    const_cast<QMenuBarPrivate*>(d)->updateGeometries();
    int height = 0;
    const int vmargin = style()->pixelMetric(QStyle::PM_MenuBarVMargin, 0, this);
    int fw = style()->pixelMetric(QStyle::PM_MenuBarPanelWidth, 0, this);
    int spaceBelowMenuBar = style()->styleHint(QStyle::SH_MainWindow_SpaceBelowMenuBar, 0, this);
    if(as_gui_menubar) {
        for (int i = 0; i < d->actionRects.count(); ++i)
            height = qMax(height, d->actionRects.at(i).height());
        if (height) //there is at least one non-null item
            height += spaceBelowMenuBar;
        height += 2*fw;
        height += 2*vmargin;
    }
    int margin = 2*vmargin + 2*fw + spaceBelowMenuBar;
#ifdef Q_WS_X11
    if(d->platformMenuBar->allowCornerWidgets()) {
#endif
    if(d->leftWidget)
        height = qMax(d->leftWidget->sizeHint().height() + margin, height);
    if(d->rightWidget)
        height = qMax(d->rightWidget->sizeHint().height() + margin, height);
#ifdef Q_WS_X11
    }
#endif
    if(as_gui_menubar) {
        QStyleOptionMenuItem opt;
        opt.init(this);
        opt.menuRect = rect();
        opt.state = QStyle::State_None;
        opt.menuItemType = QStyleOptionMenuItem::Normal;
        opt.checkType = QStyleOptionMenuItem::NotCheckable;
        return style()->sizeFromContents(QStyle::CT_MenuBar, &opt, QSize(0, height), this).height(); //not pretty..
    }
    return height;
}

void QMenuBarPrivate::_q_internalShortcutActivated(int id)
{
    Q_Q(QMenuBar);
    QAction *act = actions.at(id);
#ifdef Q_WS_X11
    if (q->isNativeMenuBar()) {
        platformMenuBar->popupAction(act);
    } else {
#endif
        setCurrentAction(act, true, true);
#ifdef Q_WS_X11
    }
#endif
    if (act && !act->menu()) {
        activateAction(act, QAction::Trigger);
        //100 is the same as the default value in QPushButton::animateClick
        autoReleaseTimer.start(100, q);
    } else if (act && q->style()->styleHint(QStyle::SH_MenuBar_AltKeyNavigation, 0, q)) {
        // When we open a menu using a shortcut, we should end up in keyboard state
        setKeyboardMode(true);
    }
}

void QMenuBarPrivate::_q_updateLayout()
{
    Q_Q(QMenuBar);
    itemsDirty = true;
    if (q->isVisible()) {
        updateGeometries();
        q->update();
    }
}

#ifdef Q_WS_X11
void QMenuBarPrivate::updateCornerWidgetToolBar()
{
    Q_Q(QMenuBar);
    if (!cornerWidgetToolBar) {
        QMainWindow *window = qobject_cast<QMainWindow *>(q->window());
        if (!window) {
            qWarning() << "Menubar parent is not a QMainWindow, not showing corner widgets";
            return;
        }
        cornerWidgetToolBar = window->addToolBar(QApplication::translate("QMenuBar", "Corner Toolbar"));
        cornerWidgetToolBar->setObjectName(QLatin1String("CornerToolBar"));
        cornerWidgetContainer = new QWidget;
        cornerWidgetToolBar->addWidget(cornerWidgetContainer);
        new QHBoxLayout(cornerWidgetContainer);
    } else {
        QLayout *layout = cornerWidgetContainer->layout();
        while (layout->count() > 0) {
            layout->takeAt(0);
        }
    }
    if (leftWidget) {
        leftWidget->setParent(cornerWidgetContainer);
        cornerWidgetContainer->layout()->addWidget(leftWidget);
    }
    if (rightWidget) {
        rightWidget->setParent(cornerWidgetContainer);
        cornerWidgetContainer->layout()->addWidget(rightWidget);
    }
}
#endif


void QMenuBar::setCornerWidget(QWidget *w, Qt::Corner corner)
{
    Q_D(QMenuBar);
    switch (corner) {
    case Qt::TopLeftCorner:
        if (d->leftWidget)
            d->leftWidget->removeEventFilter(this);
        d->leftWidget = w;
        break;
    case Qt::TopRightCorner:
        if (d->rightWidget)
            d->rightWidget->removeEventFilter(this);
        d->rightWidget = w;
        break;
    default:
        qWarning("QMenuBar::setCornerWidget: Only TopLeftCorner and TopRightCorner are supported");
        return;
    }

#ifdef Q_WS_X11
    if(!d->platformMenuBar->allowCornerWidgets()) {
        d->updateCornerWidgetToolBar();
    } else {
#endif
    if (w) {
        w->setParent(this);
        w->installEventFilter(this);
    }
#ifdef Q_WS_X11
    }
#endif

    d->_q_updateLayout();
}

QWidget *QMenuBar::cornerWidget(Qt::Corner corner) const
{
    Q_D(const QMenuBar);
    QWidget *w = 0;
    switch(corner) {
    case Qt::TopLeftCorner:
        w = d->leftWidget;
        break;
    case Qt::TopRightCorner:
        w = d->rightWidget;
        break;
    default:
        qWarning("QMenuBar::cornerWidget: Only TopLeftCorner and TopRightCorner are supported");
        break;
    }

    return w;
}

void QMenuBar::setNativeMenuBar(bool nativeMenuBar)
{
    Q_D(QMenuBar);
#ifdef Q_WS_X11
    d->platformMenuBar->setNativeMenuBar(nativeMenuBar);
#else
    if (d->nativeMenuBar == -1 || (nativeMenuBar != bool(d->nativeMenuBar))) {
        d->nativeMenuBar = nativeMenuBar;
#ifdef Q_WS_MAC
        if (!d->nativeMenuBar) {
            extern void qt_mac_clear_menubar();
            qt_mac_clear_menubar();
            d->macDestroyMenuBar();
            const QList<QAction *> &menubarActions = actions();
            for (int i = 0; i < menubarActions.size(); ++i) {
                const QAction *action = menubarActions.at(i);
                if (QMenu *menu = action->menu()) {
                    delete menu->d_func()->mac_menu;
                    menu->d_func()->mac_menu = 0;
                }
            }
        } else {
            d->macCreateMenuBar(parentWidget());
        }
        macUpdateMenuBar();
    updateGeometry();
    if (!d->nativeMenuBar && parentWidget())
        setVisible(true);
#endif
    }
#endif // Q_WS_X11
}

bool QMenuBar::isNativeMenuBar() const
{
    Q_D(const QMenuBar);
#ifdef Q_WS_X11
    return d->platformMenuBar->isNativeMenuBar();
#else
    if (d->nativeMenuBar == -1) {
        return !QApplication::instance()->testAttribute(Qt::AA_DontUseNativeMenuBar);
    }
    return d->nativeMenuBar;
#endif
}

#ifdef Q_WS_WINCE
void QMenuBar::setDefaultAction(QAction *act)
{
    Q_D(QMenuBar);
    if (d->defaultAction == act)
        return;
#ifdef Q_WS_WINCE
    if (qt_wince_is_mobile())
        if (d->defaultAction) {
            disconnect(d->defaultAction, SIGNAL(changed()), this, SLOT(_q_updateDefaultAction()));
            disconnect(d->defaultAction, SIGNAL(destroyed()), this, SLOT(_q_updateDefaultAction()));
        }
#endif
    d->defaultAction = act;
#ifdef Q_WS_WINCE
    if (qt_wince_is_mobile())
        if (d->defaultAction) {
            connect(d->defaultAction, SIGNAL(changed()), this, SLOT(_q_updateDefaultAction()));
            connect(d->defaultAction, SIGNAL(destroyed()), this, SLOT(_q_updateDefaultAction()));
        }
    if (d->wce_menubar) {
        d->wce_menubar->rebuild();
    }
#endif
}

QAction *QMenuBar::defaultAction() const
{
    return d_func()->defaultAction;
}
#endif

#ifdef QT3_SUPPORT

int QMenuBar::frameWidth() const
{
    return style()->pixelMetric(QStyle::PM_MenuBarPanelWidth, 0, this);
}

int QMenuBar::insertAny(const QIcon *icon, const QString *text, const QObject *receiver, const char *member,
                        const QKeySequence *shortcut, const QMenu *popup, int id, int index)
{
    QAction *act = popup ? popup->menuAction() : new QAction(this);
    if(id != -1)
        static_cast<QMenuItem*>(act)->setId(id);
    if(icon)
        act->setIcon(*icon);
    if(text)
        act->setText(*text);
    if(shortcut)
        act->setShortcut(*shortcut);
    if(receiver && member)
        QObject::connect(act, SIGNAL(triggered(bool)), receiver, member);
    if(index == -1 || index >= actions().count())
        addAction(act);
    else
        insertAction(actions().value(index), act);
    return findIdForAction(act);
}

int QMenuBar::insertSeparator(int index)
{
    QAction *act = new QAction(this);
    act->setSeparator(true);
    if(index == -1 || index >= actions().count())
        addAction(act);
    else
        insertAction(actions().value(index), act);
    return findIdForAction(act);
}

bool QMenuBar::setItemParameter(int id, int param)
{
    if(QAction *act = findActionForId(id)) {
        act->d_func()->param = param;
        return true;
    }
    return false;
}

int QMenuBar::itemParameter(int id) const
{
    if(QAction *act = findActionForId(id))
        return act->d_func()->param;
    return id;
}

QAction *QMenuBar::findActionForId(int id) const
{
    QList<QAction *> list = actions();
    for (int i = 0; i < list.size(); ++i) {
        QAction *act = list.at(i);
        if (findIdForAction(act) == id)
            return act;
    }
    return 0;
}

int QMenuBar::findIdForAction(QAction *act) const
{
    Q_ASSERT(act);
    return act->d_func()->id;
}
#endif

// for private slots


QT_END_NAMESPACE

#include <moc_qmenubar.cpp>

#endif // QT_NO_MENUBAR