Long live Qt 4.5!

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diff --git a/src/gui/widgets/qmenu_p.h b/src/gui/widgets/qmenu_p.h
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QMENU_P_H
+#define QMENU_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "QtGui/qmenubar.h"
+#include "QtGui/qstyleoption.h"
+#include "QtCore/qdatetime.h"
+#include "QtCore/qmap.h"
+#include "QtCore/qhash.h"
+#include "QtCore/qbasictimer.h"
+#include "private/qwidget_p.h"
+
+QT_BEGIN_NAMESPACE
+
+#ifndef QT_NO_MENU
+
+class QTornOffMenu;
+class QEventLoop;
+
+#ifdef Q_WS_MAC
+#  ifdef __OBJC__
+QT_END_NAMESPACE
+@class NSMenuItem;
+QT_BEGIN_NAMESPACE
+#  else
+typedef void NSMenuItem;
+#  endif //__OBJC__
+struct QMacMenuAction {
+    QMacMenuAction() 
+#ifndef QT_MAC_USE_COCOA
+       : command(0)
+#else
+       : menuItem(0)
+#endif
+         , ignore_accel(0), merged(0), menu(0)
+    {
+    }
+    ~QMacMenuAction();
+#ifndef QT_MAC_USE_COCOA
+    uint command;
+#else
+    NSMenuItem *menuItem;
+#endif
+    uchar ignore_accel : 1;
+    uchar merged : 1;
+    QPointer<QAction> action;
+    OSMenuRef menu;
+};
+
+struct QMenuMergeItem
+{
+#ifndef QT_MAC_USE_COCOA
+    inline QMenuMergeItem(MenuCommand c, QMacMenuAction *a) : command(c), action(a) { }
+    MenuCommand command;
+#else
+    inline QMenuMergeItem(NSMenuItem *c, QMacMenuAction *a) : menuItem(c), action(a) { }
+    NSMenuItem *menuItem;
+#endif
+    QMacMenuAction *action;
+};
+typedef QList<QMenuMergeItem> QMenuMergeList;
+#endif
+
+#ifdef Q_OS_WINCE
+struct QWceMenuAction {
+    uint command;    
+    QPointer<QAction> action;
+    HMENU menuHandle;
+    QWceMenuAction() : menuHandle(0), command(0) {}
+};
+#endif
+
+class QMenuPrivate : public QWidgetPrivate
+{
+    Q_DECLARE_PUBLIC(QMenu)
+public:
+    QMenuPrivate() : itemsDirty(0), maxIconWidth(0), tabWidth(0), ncols(0),
+                      collapsibleSeparators(true), hasHadMouse(0), aboutToHide(0), motions(0),
+                      currentAction(0), scroll(0), eventLoop(0), tearoff(0), tornoff(0), tearoffHighlighted(0),
+                      hasCheckableItems(0), sloppyAction(0)
+#ifdef Q_WS_MAC
+                      ,mac_menu(0)
+#endif
+#if defined(Q_OS_WINCE) && !defined(QT_NO_MENUBAR)
+                      ,wce_menu(0)
+#endif
+#ifdef QT3_SUPPORT
+                      ,emitHighlighted(false)
+#endif
+    { }
+    ~QMenuPrivate()
+    {
+        delete scroll;
+#ifdef Q_WS_MAC
+        delete mac_menu;
+#endif
+#if defined(Q_OS_WINCE) && !defined(QT_NO_MENUBAR)
+        delete wce_menu;
+#endif
+    }
+    void init();
+
+    //item calculations
+    mutable uint itemsDirty : 1;
+    mutable uint maxIconWidth, tabWidth;
+    QRect actionRect(QAction *) const;
+    mutable QMap<QAction*, QRect> actionRects;
+    mutable QList<QAction*> actionList;
+    mutable QHash<QAction *, QWidget *> widgetItems;
+    void calcActionRects(QMap<QAction*, QRect> &actionRects, QList<QAction*> &actionList) const;
+    void updateActions();
+    QRect popupGeometry(int screen=-1) const;
+    QList<QAction *> filterActions(const QList<QAction *> &actions) const;
+    uint ncols : 4; //4 bits is probably plenty
+    uint collapsibleSeparators : 1;
+
+    uint activationRecursionGuard : 1;
+
+    //selection
+    static QPointer<QMenu> mouseDown;
+    QPoint mousePopupPos;
+    uint hasHadMouse : 1;
+    uint aboutToHide : 1;
+    int motions;
+    QAction *currentAction;
+    static QBasicTimer menuDelayTimer;
+    enum SelectionReason {
+        SelectedFromKeyboard,
+        SelectedFromElsewhere
+    };
+    QAction *actionAt(QPoint p) const;
+    void setFirstActionActive();
+    void setCurrentAction(QAction *, int popup = -1, SelectionReason reason = SelectedFromElsewhere, bool activateFirst = false);
+    void popupAction(QAction *, int, bool);
+    void setSyncAction();
+
+    //scrolling support
+    struct QMenuScroller {
+        enum ScrollLocation { ScrollStay, ScrollBottom, ScrollTop, ScrollCenter };
+        enum ScrollDirection { ScrollNone=0, ScrollUp=0x01, ScrollDown=0x02 };
+        uint scrollFlags : 2, scrollDirection : 2;
+        int scrollOffset;
+        QBasicTimer *scrollTimer;
+
+        QMenuScroller() : scrollFlags(ScrollNone), scrollDirection(ScrollNone), scrollOffset(0), scrollTimer(0) { }
+        ~QMenuScroller() { delete scrollTimer; }
+    } *scroll;
+    void scrollMenu(QMenuScroller::ScrollLocation location, bool active=false);
+    void scrollMenu(QMenuScroller::ScrollDirection direction, bool page=false, bool active=false);
+    void scrollMenu(QAction *action, QMenuScroller::ScrollLocation location, bool active=false);
+
+    //synchronous operation (ie exec())
+    QEventLoop *eventLoop;
+    QPointer<QAction> syncAction;
+
+    //search buffer
+    QString searchBuffer;
+    QBasicTimer searchBufferTimer;
+
+    //passing of mouse events up the parent heirarchy
+    QPointer<QMenu> activeMenu;
+    bool mouseEventTaken(QMouseEvent *);
+
+    //used to walk up the popup list
+    struct QMenuCaused {
+        QPointer<QWidget> widget;
+        QPointer<QAction> action;
+    };
+    virtual QList<QPointer<QWidget> > calcCausedStack() const;
+    QMenuCaused causedPopup;
+    void hideUpToMenuBar();
+    void hideMenu(QMenu *menu);
+
+    //index mappings
+    inline QAction *actionAt(int i) const { return q_func()->actions().at(i); }
+    inline int indexOf(QAction *act) const { return q_func()->actions().indexOf(act); }
+
+    //tear off support
+    uint tearoff : 1, tornoff : 1, tearoffHighlighted : 1;
+    QPointer<QTornOffMenu> tornPopup;
+
+    mutable bool hasCheckableItems;
+
+    //sloppy selection
+    static QBasicTimer sloppyDelayTimer;
+    QAction *sloppyAction;
+    QRegion sloppyRegion;
+
+    //default action
+    QPointer<QAction> defaultAction;
+
+    QAction *menuAction;
+    QAction *defaultMenuAction;
+
+    void setOverrideMenuAction(QAction *);
+    void _q_overrideMenuActionDestroyed();
+
+    //firing of events
+    void activateAction(QAction *, QAction::ActionEvent, bool self=true);
+    void activateCausedStack(const QList<QPointer<QWidget> > &, QAction *, QAction::ActionEvent, bool);
+
+    void _q_actionTriggered();
+    void _q_actionHovered();
+
+    bool hasMouseMoved(const QPoint &globalPos);
+
+    //menu fading/scrolling effects
+    bool doChildEffects;
+
+#ifdef Q_WS_MAC
+    //mac menu binding
+    struct QMacMenuPrivate {
+        QList<QMacMenuAction*> actionItems;
+        OSMenuRef menu;
+        QMacMenuPrivate();
+        ~QMacMenuPrivate();
+
+        bool merged(const QAction *action) const;
+        void addAction(QAction *, QMacMenuAction* =0, QMenuPrivate *qmenu = 0);
+        void addAction(QMacMenuAction *, QMacMenuAction* =0, QMenuPrivate *qmenu = 0);
+        void syncAction(QMacMenuAction *);
+        inline void syncAction(QAction *a) { syncAction(findAction(a)); }
+        void removeAction(QMacMenuAction *);
+        inline void removeAction(QAction *a) { removeAction(findAction(a)); }
+        inline QMacMenuAction *findAction(QAction *a) {
+            for(int i = 0; i < actionItems.size(); i++) {
+                QMacMenuAction *act = actionItems[i];
+                if(a == act->action)
+                    return act;
+            }
+            return 0;
+        }
+    } *mac_menu;
+    OSMenuRef macMenu(OSMenuRef merge);
+    void setMacMenuEnabled(bool enable = true);
+    static QHash<OSMenuRef, OSMenuRef> mergeMenuHash;
+    static QHash<OSMenuRef, QMenuMergeList*> mergeMenuItemsHash;
+#endif
+
+    QPointer<QAction> actionAboutToTrigger;
+#ifdef QT3_SUPPORT
+    bool emitHighlighted;
+#endif
+
+#if defined(Q_OS_WINCE) && !defined(QT_NO_MENUBAR)
+    struct QWceMenuPrivate {
+        QList<QWceMenuAction*> actionItems;
+        HMENU menuHandle;
+        QWceMenuPrivate();
+        ~QWceMenuPrivate();        
+        void addAction(QAction *, QWceMenuAction* =0);
+        void addAction(QWceMenuAction *, QWceMenuAction* =0);
+        void syncAction(QWceMenuAction *);
+        inline void syncAction(QAction *a) { syncAction(findAction(a)); }
+        void removeAction(QWceMenuAction *);
+        void rebuild(bool reCreate = false);
+        inline void removeAction(QAction *a) { removeAction(findAction(a)); }
+        inline QWceMenuAction *findAction(QAction *a) {
+            for(int i = 0; i < actionItems.size(); i++) {
+                QWceMenuAction *act = actionItems[i];
+                if(a == act->action)
+                    return act;
+            }
+            return 0;
+        }
+    } *wce_menu;
+    HMENU wceMenu(bool create = false);
+    QAction* wceCommands(uint command);
+#endif
+
+    QPointer<QWidget> noReplayFor;
+};
+
+#endif // QT_NO_MENU
+
+QT_END_NAMESPACE
+
+#endif // QMENU_P_H