qmenubar.cpp

奇趣公司比较新的qt/emd版本

#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->updateGeometries();
    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);
}

/*!
  \reimp
*/
bool QMenuBar::eventFilter(QObject *object, QEvent *event)
{
    Q_D(QMenuBar);
    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::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;
}

/*!
  \internal

  Return the item at \a pt, or 0 if there is no item there or if it is
  a separator item.
*/
QAction *QMenuBar::actionAt(const QPoint &pt) const
{
    Q_D(const QMenuBar);
    return d->actionAt(pt);
}

/*!
  \internal

  Returns the geometry of action \a act.
*/
QRect QMenuBar::actionGeometry(QAction *act) const
{
    Q_D(const QMenuBar);
    return d->actionRect(act);
}

/*!
  \reimp
*/
QSize QMenuBar::minimumSizeHint() const
{
    Q_D(const QMenuBar);
#ifdef Q_WS_MAC
    const bool as_gui_menubar = !d->mac_menubar;
#else
    const bool as_gui_menubar = true;
#endif

    ensurePolished();
    QSize ret(0, 0);
    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) {
        QMap<QAction*, QRect> actionRects;
        QList<QAction*> actionList;
        int w = parentWidget() ? parentWidget()->width() : QApplication::desktop()->width();
        d->calcActionRects(w - (2 * fw), 0, actionRects, actionList);
        if (d->actionList.count() > 0) {
            ret = d->actionRect(d->actionList.at(0)).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;
    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);
    }
    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;
}

/*!
  \reimp
*/
QSize QMenuBar::sizeHint() const
{
    Q_D(const QMenuBar);
#ifdef Q_WS_MAC
    const bool as_gui_menubar = !d->mac_menubar;
#else
    const bool as_gui_menubar = true;
#endif

    ensurePolished();
    QSize ret(0, 0);
    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) {
        QMap<QAction*, QRect> actionRects;
        QList<QAction*> actionList;
        const int w = parentWidget() ? parentWidget()->width() : QApplication::desktop()->width();
        d->calcActionRects(w - (2 * fw), 0, actionRects, actionList);
        for (QMap<QAction*, QRect>::const_iterator i = actionRects.constBegin();
             i != actionRects.constEnd(); ++i) {
            QRect actionRect(i.value());
            if(actionRect.x() + actionRect.width() > ret.width())
                ret.setWidth(actionRect.x() + actionRect.width());
            if(actionRect.y() + actionRect.height() > ret.height())
                ret.setHeight(actionRect.y() + actionRect.height());
        }
        ret += QSize(2*fw + 2*hmargin, 2*fw + 2*vmargin);
    }
    int margin = 2*vmargin + 2*fw + spaceBelowMenuBar;
    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);
    }
    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;
}

/*!
  \reimp
*/
int QMenuBar::heightForWidth(int) const
{
    Q_D(const QMenuBar);
#ifdef Q_WS_MAC
    const bool as_gui_menubar = !d->mac_menubar;
#else
    const bool as_gui_menubar = true;
#endif
    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) {
        if (d->actionList.count()) {
            // assume all actionrects have the same height
            height = d->actionRect(d->actionList.first()).height();
            height += spaceBelowMenuBar;
        }
        height += 2*fw;
        height += 2*vmargin;
    }
    int margin = 2*vmargin + 2*fw + spaceBelowMenuBar;
    if(d->leftWidget)
        height = qMax(d->leftWidget->sizeHint().height() + margin, height);
    if(d->rightWidget)
        height = qMax(d->rightWidget->sizeHint().height() + margin, height);
    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;
}

/*!
  \internal
*/
void QMenuBarPrivate::_q_internalShortcutActivated(int id)
{
    QAction *act = actionList.at(id);
    setCurrentAction(act, true, true);
}

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

/*!
  \internal

  This sets widget \a w to be shown directly on the left of the first or
  the right of the last menu item, depending on \a corner.
*/
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;
    }

    if (w) {
        w->setParent(this);
        w->installEventFilter(this);
    }

    d->_q_updateLayout();
}

/*!
  \internal

  Returns the widget in the left of the first or the right of the last menu
  item, depending on \a corner.
*/
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;
}

/*!
    \fn void QMenuBar::triggered(QAction *action)

    This signal is emitted when an action in a menu belonging to this menubar
    is triggered as a result of a mouse click; \a action is the action that
    caused the signal to be emitted.

    Normally, you connect each menu action to a single slot using
    QAction::triggered(), but sometimes you will want to connect
    several items to a single slot (most often if the user selects
    from an array). This signal is useful in such cases.

    \sa hovered(), QAction::triggered()
*/

/*!
    \fn void QMenuBar::hovered(QAction *action)

    This signal is emitted when a menu action is highlighted; \a action
    is the action that caused the event to be sent.

    Often this is used to update status information.

    \sa triggered(), QAction::hovered()
*/


#ifdef QT3_SUPPORT
/*!
    Use style()->pixelMetric(QStyle::PM_MenuBarPanelWidth, this)
    instead.
*/
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())