src/gui/kernel/qwidget_p.h
changeset 0 1918ee327afb
child 3 41300fa6a67c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/gui/kernel/qwidget_p.h	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,869 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (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 Technology Preview License Agreement accompanying
+** this package.
+**
+** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QWIDGET_P_H
+#define QWIDGET_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists for the convenience
+// of qapplication_*.cpp, qwidget*.cpp and qfiledialog.cpp.  This header
+// file may change from version to version without notice, or even be removed.
+//
+// We mean it.
+//
+
+#include "QtGui/qwidget.h"
+#include "private/qobject_p.h"
+#include "QtCore/qrect.h"
+#include "QtCore/qlocale.h"
+#include "QtCore/qset.h"
+#include "QtGui/qregion.h"
+#include "QtGui/qsizepolicy.h"
+#include "QtGui/qstyle.h"
+#include "QtGui/qapplication.h"
+#include <private/qgraphicseffect_p.h>
+#include "QtGui/qgraphicsproxywidget.h"
+#include "QtGui/qgraphicsscene.h"
+#include "QtGui/qgraphicsview.h"
+#include <private/qgesture_p.h>
+
+#ifdef Q_WS_WIN
+#include "QtCore/qt_windows.h"
+#include <private/qdnd_p.h>
+#endif // Q_WS_WIN
+
+#ifdef Q_WS_X11
+#include "QtGui/qx11info_x11.h"
+#endif
+
+#ifdef Q_WS_MAC
+#include <private/qt_mac_p.h>
+#endif
+
+#if defined(Q_WS_QWS)
+#include "QtGui/qinputcontext.h"
+#include "QtGui/qscreen_qws.h"
+#endif
+
+#if defined(Q_OS_SYMBIAN)
+class RDrawableWindow;
+class CCoeControl;
+#endif
+
+QT_BEGIN_NAMESPACE
+
+// Extra QWidget data
+//  - to minimize memory usage for members that are seldom used.
+//  - top-level widgets have extra extra data to reduce cost further
+#if defined(Q_WS_QWS)
+class QWSManager;
+#endif
+#if defined(Q_WS_MAC)
+class QCoreGraphicsPaintEnginePrivate;
+#endif
+class QPaintEngine;
+class QPixmap;
+class QWidgetBackingStore;
+class QGraphicsProxyWidget;
+class QWidgetItemV2;
+
+class QStyle;
+
+struct QTLWExtra {
+    // *************************** Cross-platform variables *****************************
+
+    // Regular pointers (keep them together to avoid gaps on 64 bits architectures).
+    QIcon *icon; // widget icon
+    QPixmap *iconPixmap;
+    QWidgetBackingStore *backingStore;
+    QWindowSurface *windowSurface;
+    QPainter *sharedPainter;
+
+    // Implicit pointers (shared_null).
+    QString caption; // widget caption
+    QString iconText; // widget icon text
+    QString role; // widget role
+    QString filePath; // widget file path
+
+    // Other variables.
+    short incw, inch; // size increments
+    short basew, baseh; // base sizes
+     // frame strut, don't use these directly, use QWidgetPrivate::frameStrut() instead.
+    QRect frameStrut;
+    QRect normalGeometry; // used by showMin/maximized/FullScreen
+    Qt::WindowFlags savedFlags; // Save widget flags while showing fullscreen
+
+    // *************************** Cross-platform bit fields ****************************
+    uint opacity : 8;
+    uint posFromMove : 1;
+    uint sizeAdjusted : 1;
+    uint inTopLevelResize : 1;
+    uint inRepaint : 1;
+    uint embedded : 1;
+
+    // *************************** Platform specific values (bit fields first) **********
+#if defined(Q_WS_X11) // <----------------------------------------------------------- X11
+    uint spont_unmapped: 1; // window was spontaneously unmapped
+    uint dnd : 1; // DND properties installed
+    uint validWMState : 1; // is WM_STATE valid?
+    uint waitingForMapNotify : 1; // show() has been called, haven't got the MapNotify yet
+    WId parentWinId; // parent window Id (valid after reparenting)
+    WId userTimeWindow; // window id that contains user-time timestamp when WM supports a _NET_WM_USER_TIME_WINDOW atom
+    QPoint fullScreenOffset;
+#ifndef QT_NO_XSYNC
+    WId syncUpdateCounter;
+    ulong syncRequestTimestamp;
+    qint32 newCounterValueHi;
+    quint32 newCounterValueLo;
+#endif
+#elif defined(Q_WS_WIN) // <--------------------------------------------------------- WIN
+    HICON winIconBig; // internal big Windows icon
+    HICON winIconSmall; // internal small Windows icon
+#elif defined(Q_WS_MAC) // <--------------------------------------------------------- MAC
+    uint resizer : 4;
+    uint isSetGeometry : 1;
+    uint isMove : 1;
+    quint32 wattr;
+    quint32 wclass;
+    WindowGroupRef group;
+    IconRef windowIcon; // the current window icon, if set with setWindowIcon_sys.
+    quint32 savedWindowAttributesFromMaximized; // Saved attributes from when the calling updateMaximizeButton_sys()
+#elif defined(Q_WS_QWS) // <--------------------------------------------------------- QWS
+#ifndef QT_NO_QWS_MANAGER
+    QWSManager *qwsManager;
+#endif
+#endif
+};
+
+struct QWExtra {
+    // *************************** Cross-platform variables *****************************
+
+    // Regular pointers (keep them together to avoid gaps on 64 bits architectures).
+    void *glContext; // if the widget is hijacked by QGLWindowSurface
+    QTLWExtra *topextra; // only useful for TLWs
+#ifndef QT_NO_GRAPHICSVIEW
+    QGraphicsProxyWidget *proxyWidget; // if the widget is embedded
+#endif
+#ifndef QT_NO_CURSOR
+    QCursor *curs;
+#endif
+    QPointer<QStyle> style;
+    QPointer<QWidget> focus_proxy;
+
+    // Implicit pointers (shared_empty/shared_null).
+    QRegion mask; // widget mask
+    QString styleSheet;
+
+    // Other variables.
+    qint32 minw;
+    qint32 minh; // minimum size
+    qint32 maxw;
+    qint32 maxh; // maximum size
+    quint16 customDpiX;
+    quint16 customDpiY;
+    QSize staticContentsSize;
+
+    // *************************** Cross-platform bit fields ****************************
+    uint explicitMinSize : 2;
+    uint explicitMaxSize : 2;
+    uint autoFillBackground : 1;
+    uint nativeChildrenForced : 1;
+    uint inRenderWithPainter : 1;
+    uint hasMask : 1;
+
+    // *************************** Platform specific values (bit fields first) **********
+#if defined(Q_WS_WIN) // <----------------------------------------------------------- WIN
+#ifndef QT_NO_DRAGANDDROP
+    QOleDropTarget *dropTarget; // drop target
+    QList<QPointer<QWidget> > oleDropWidgets;
+#endif
+#elif defined(Q_WS_X11) // <--------------------------------------------------------- X11
+    uint compress_events : 1;
+    WId xDndProxy; // XDND forwarding to embedded windows
+#elif defined(Q_WS_MAC) // <------------------------------------------------------ MAC
+#ifdef QT_MAC_USE_COCOA
+    // Cocoa Mask stuff
+    QImage maskBits;
+    CGImageRef imageMask;
+#endif
+#elif defined(Q_OS_SYMBIAN) // <----------------------------------------------------- Symbian
+    uint activated : 1; // RWindowBase::Activated has been called
+
+    // If set, QSymbianControl::Draw does not blit this widget
+    // This is to allow, for use cases such as video, widgets which, from the Qt point
+    // of view, are just placeholders in the scene.  For these widgets, any necessary
+    // drawing to the UI framebuffer is done by the relevant Symbian subsystem.  For
+    // video rendering, this would be an MMF controller, or MDF post-processor.
+    uint disableBlit : 1;
+#endif
+};
+
+/*!
+    \internal
+
+    Returns true if \a p or any of its parents enable the
+    Qt::BypassGraphicsProxyWidget window flag. Used in QWidget::show() and
+    QWidget::setParent() to determine whether it's necessary to embed the
+    widget into a QGraphicsProxyWidget or not.
+*/
+static inline bool bypassGraphicsProxyWidget(const QWidget *p)
+{
+    while (p) {
+        if (p->windowFlags() & Qt::BypassGraphicsProxyWidget)
+            return true;
+        p = p->parentWidget();
+    }
+    return false;
+}
+
+class Q_GUI_EXPORT QWidgetPrivate : public QObjectPrivate
+{
+    Q_DECLARE_PUBLIC(QWidget)
+
+public:
+    // *************************** Cross-platform ***************************************
+    enum DrawWidgetFlags {
+        DrawAsRoot = 0x01,
+        DrawPaintOnScreen = 0x02,
+        DrawRecursive = 0x04,
+        DrawInvisible = 0x08,
+        DontSubtractOpaqueChildren = 0x10,
+        DontSetCompositionMode = 0x20,
+        DontDrawOpaqueChildren = 0x40
+    };
+
+    enum CloseMode {
+        CloseNoEvent,
+        CloseWithEvent,
+        CloseWithSpontaneousEvent
+    };
+
+    enum Direction {
+        DirectionNorth = 0x01,
+        DirectionEast = 0x10,
+        DirectionSouth = 0x02,
+        DirectionWest = 0x20
+    };
+
+    // Functions.
+    explicit QWidgetPrivate(int version = QObjectPrivateVersion);
+    ~QWidgetPrivate();
+
+    QWExtra *extraData() const;
+    QTLWExtra *topData() const;
+    QTLWExtra *maybeTopData() const;
+    QPainter *sharedPainter() const;
+    void setSharedPainter(QPainter *painter);
+    QWidgetBackingStore *maybeBackingStore() const;
+    void init(QWidget *desktopWidget, Qt::WindowFlags f);
+    void create_sys(WId window, bool initializeWindow, bool destroyOldWindow);
+    void createRecursively();
+    void createWinId(WId id = 0);
+
+    void createTLExtra();
+    void createExtra();
+    void deleteExtra();
+    void createSysExtra();
+    void deleteSysExtra();
+    void createTLSysExtra();
+    void deleteTLSysExtra();
+    void updateSystemBackground();
+    void propagatePaletteChange();
+
+    void setPalette_helper(const QPalette &);
+    void resolvePalette();
+    QPalette naturalWidgetPalette(uint inheritedMask) const;
+
+    void setMask_sys(const QRegion &);
+#ifdef Q_OS_SYMBIAN
+    void setSoftKeys_sys(const QList<QAction*> &softkeys);
+    void activateSymbianWindow(WId wid = 0);
+    void _q_delayedDestroy(WId winId);
+#endif
+
+    void raise_sys();
+    void lower_sys();
+    void stackUnder_sys(QWidget *);
+
+    void setFocus_sys();
+
+    void updateFont(const QFont &);
+    inline void setFont_helper(const QFont &font) {
+        if (data.fnt == font && data.fnt.resolve() == font.resolve())
+            return;
+        updateFont(font);
+    }
+    void resolveFont();
+    QFont naturalWidgetFont(uint inheritedMask) const;
+
+    void setLayoutDirection_helper(Qt::LayoutDirection);
+    void resolveLayoutDirection();
+
+    void setLocale_helper(const QLocale &l, bool forceUpdate = false);
+    void resolveLocale();
+
+    void setStyle_helper(QStyle *newStyle, bool propagate, bool metalHack = false);
+    void inheritStyle();
+
+    void setUpdatesEnabled_helper(bool );
+
+    void paintBackground(QPainter *, const QRegion &, int flags = DrawAsRoot) const;
+    bool isAboutToShow() const;
+    QRegion prepareToRender(const QRegion &region, QWidget::RenderFlags renderFlags);
+    void render_helper(QPainter *painter, const QPoint &targetOffset, const QRegion &sourceRegion,
+                       QWidget::RenderFlags renderFlags);
+    void drawWidget(QPaintDevice *pdev, const QRegion &rgn, const QPoint &offset, int flags,
+                    QPainter *sharedPainter = 0, QWidgetBackingStore *backingStore = 0);
+
+
+    void paintSiblingsRecursive(QPaintDevice *pdev, const QObjectList& children, int index,
+                                const QRegion &rgn, const QPoint &offset, int flags
+#ifdef Q_BACKINGSTORE_SUBSURFACES
+                                , const QWindowSurface *currentSurface
+#endif
+                                , QPainter *sharedPainter, QWidgetBackingStore *backingStore);
+
+
+    QPainter *beginSharedPainter();
+    bool endSharedPainter();
+#ifndef QT_NO_GRAPHICSVIEW
+    static QGraphicsProxyWidget * nearestGraphicsProxyWidget(const QWidget *origin);
+#endif
+    QWindowSurface *createDefaultWindowSurface();
+    QWindowSurface *createDefaultWindowSurface_sys();
+    void repaint_sys(const QRegion &rgn);
+
+    QRect clipRect() const;
+    QRegion clipRegion() const;
+    void subtractOpaqueChildren(QRegion &rgn, const QRect &clipRect) const;
+    void subtractOpaqueSiblings(QRegion &source, bool *hasDirtySiblingsAbove = 0,
+                                bool alsoNonOpaque = false) const;
+    void clipToEffectiveMask(QRegion &region) const;
+    void updateIsOpaque();
+    void setOpaque(bool opaque);
+    void updateIsTranslucent();
+    bool paintOnScreen() const;
+    void invalidateGraphicsEffectsRecursively();
+
+    QRegion getOpaqueRegion() const;
+    const QRegion &getOpaqueChildren() const;
+    void setDirtyOpaqueRegion();
+
+    bool close_helper(CloseMode mode);
+
+    void setWindowIcon_helper();
+    void setWindowIcon_sys(bool forceReset = false);
+    void setWindowOpacity_sys(qreal opacity);
+    void adjustQuitOnCloseAttribute();
+
+    void scrollChildren(int dx, int dy);
+    void moveRect(const QRect &, int dx, int dy);
+    void scrollRect(const QRect &, int dx, int dy);
+    void invalidateBuffer_resizeHelper(const QPoint &oldPos, const QSize &oldSize);
+    // ### Qt 4.6: Merge into a template function (after MSVC isn't supported anymore).
+    void invalidateBuffer(const QRegion &);
+    void invalidateBuffer(const QRect &);
+    bool isOverlapped(const QRect&) const;
+    void syncBackingStore();
+    void syncBackingStore(const QRegion &region);
+
+    void reparentFocusWidgets(QWidget *oldtlw);
+
+    static int pointToRect(const QPoint &p, const QRect &r);
+
+    void setWinId(WId);
+    void showChildren(bool spontaneous);
+    void hideChildren(bool spontaneous);
+    void setParent_sys(QWidget *parent, Qt::WindowFlags);
+    void scroll_sys(int dx, int dy);
+    void scroll_sys(int dx, int dy, const QRect &r);
+    void deactivateWidgetCleanup();
+    void setGeometry_sys(int, int, int, int, bool);
+    void sendPendingMoveAndResizeEvents(bool recursive = false, bool disableUpdates = false);
+    void activateChildLayoutsRecursively();
+    void show_recursive();
+    void show_helper();
+    void show_sys();
+    void hide_sys();
+    void hide_helper();
+    void _q_showIfNotHidden();
+
+    void setEnabled_helper(bool);
+    void registerDropSite(bool);
+    static void adjustFlags(Qt::WindowFlags &flags, QWidget *w = 0);
+
+    void updateFrameStrut();
+    QRect frameStrut() const;
+
+#ifdef QT_KEYPAD_NAVIGATION
+    static bool navigateToDirection(Direction direction);
+    static QWidget *widgetInNavigationDirection(Direction direction);
+#endif
+
+    void setWindowIconText_sys(const QString &cap);
+    void setWindowIconText_helper(const QString &cap);
+    void setWindowTitle_sys(const QString &cap);
+
+#ifndef QT_NO_CURSOR
+    void setCursor_sys(const QCursor &cursor);
+    void unsetCursor_sys();
+#endif
+
+    void setWindowTitle_helper(const QString &cap);
+    void setWindowFilePath_helper(const QString &filePath);
+
+    bool setMinimumSize_helper(int &minw, int &minh);
+    bool setMaximumSize_helper(int &maxw, int &maxh);
+    void setConstraints_sys();
+    QWidget *childAt_helper(const QPoint &, bool) const;
+    void updateGeometry_helper(bool forceUpdate);
+
+    void getLayoutItemMargins(int *left, int *top, int *right, int *bottom) const;
+    void setLayoutItemMargins(int left, int top, int right, int bottom);
+    void setLayoutItemMargins(QStyle::SubElement element, const QStyleOption *opt = 0);
+
+    QInputContext *inputContext() const;
+
+    void setModal_sys();
+
+    // This is an helper function that return the available geometry for
+    // a widget and takes care is this one is in QGraphicsView.
+    // If the widget is not embed in a scene then the geometry available is
+    // null, we let QDesktopWidget decide for us.
+    static QRect screenGeometry(const QWidget *widget)
+    {
+        QRect screen;
+#ifndef QT_NO_GRAPHICSVIEW
+        QGraphicsProxyWidget *ancestorProxy = widget->d_func()->nearestGraphicsProxyWidget(widget);
+        //It's embedded if it has an ancestor
+        if (ancestorProxy) {
+            if (!bypassGraphicsProxyWidget(widget)) {
+                // One view, let be smart and return the viewport rect then the popup is aligned
+                if (ancestorProxy->scene()->views().size() == 1) {
+                    QGraphicsView *view = ancestorProxy->scene()->views().at(0);
+                    screen = view->mapToScene(view->viewport()->rect()).boundingRect().toRect();
+                } else {
+                    screen = ancestorProxy->scene()->sceneRect().toRect();
+                }
+            }
+        }
+#endif
+        return screen;
+    }
+
+    inline void setRedirected(QPaintDevice *replacement, const QPoint &offset)
+    {
+        Q_ASSERT(q_func()->testAttribute(Qt::WA_WState_InPaintEvent));
+        redirectDev = replacement;
+        redirectOffset = offset;
+    }
+
+    inline QPaintDevice *redirected(QPoint *offset) const
+    {
+        if (offset)
+            *offset = redirectDev ? redirectOffset : QPoint();
+        return redirectDev;
+    }
+
+    inline void restoreRedirected()
+    { redirectDev = 0; }
+
+    inline void enforceNativeChildren()
+    {
+        if (!extra)
+            createExtra();
+
+        if (extra->nativeChildrenForced)
+            return;
+        extra->nativeChildrenForced = 1;
+
+        for (int i = 0; i < children.size(); ++i) {
+            if (QWidget *child = qobject_cast<QWidget *>(children.at(i)))
+                child->setAttribute(Qt::WA_NativeWindow);
+        }
+    }
+
+    inline bool nativeChildrenForced() const
+    {
+        return extra ? extra->nativeChildrenForced : false;
+    }
+
+    inline QRect effectiveRectFor(const QRect &rect) const
+    {
+        if (graphicsEffect && graphicsEffect->isEnabled())
+            return graphicsEffect->boundingRectFor(rect).toAlignedRect();
+        return rect;
+    }
+
+    QSize adjustedSize() const;
+
+    inline void handleSoftwareInputPanel(Qt::MouseButton button, bool clickCausedFocus)
+    {
+        Q_Q(QWidget);
+        if (button == Qt::LeftButton && qApp->autoSipEnabled()) {
+            QStyle::RequestSoftwareInputPanel behavior = QStyle::RequestSoftwareInputPanel(
+                    q->style()->styleHint(QStyle::SH_RequestSoftwareInputPanel));
+            if (!clickCausedFocus || behavior == QStyle::RSIP_OnMouseClick) {
+                QEvent event(QEvent::RequestSoftwareInputPanel);
+                QApplication::sendEvent(q, &event);
+            }
+        }
+    }
+
+#ifndef Q_WS_QWS // Almost cross-platform :-)
+    void setWSGeometry(bool dontShow=false, const QRect &oldRect = QRect());
+
+    inline QPoint mapToWS(const QPoint &p) const
+    { return p - data.wrect.topLeft(); }
+
+    inline QPoint mapFromWS(const QPoint &p) const
+    { return p + data.wrect.topLeft(); }
+
+    inline QRect mapToWS(const QRect &r) const
+    { QRect rr(r); rr.translate(-data.wrect.topLeft()); return rr; }
+
+    inline QRect mapFromWS(const QRect &r) const
+    { QRect rr(r); rr.translate(data.wrect.topLeft()); return rr; }
+#endif
+
+    // Variables.
+    // Regular pointers (keep them together to avoid gaps on 64 bit architectures).
+    QWExtra *extra;
+    QWidget *focus_next;
+    QWidget *focus_prev;
+    QWidget *focus_child;
+    QLayout *layout;
+    QRegion *needsFlush;
+    QPaintDevice *redirectDev;
+    QWidgetItemV2 *widgetItem;
+    QPaintEngine *extraPaintEngine;
+    mutable const QMetaObject *polished;
+    QGraphicsEffect *graphicsEffect;
+    // All widgets are added into the allWidgets set. Once
+    // they receive a window id they are also added to the mapper.
+    // This should just ensure that all widgets are deleted by QApplication
+    static QWidgetMapper *mapper;
+    static QWidgetSet *allWidgets;
+#if !defined(QT_NO_IM)
+    QPointer<QInputContext> ic;
+    Qt::InputMethodHints imHints;
+#endif
+#ifdef QT_KEYPAD_NAVIGATION
+    static QPointer<QWidget> editingWidget;
+#endif
+
+    // Implicit pointers (shared_null/shared_empty).
+    QRegion opaqueChildren;
+    QRegion dirty;
+#ifndef QT_NO_TOOLTIP
+    QString toolTip;
+#endif
+#ifndef QT_NO_STATUSTIP
+    QString statusTip;
+#endif
+#ifndef QT_NO_WHATSTHIS
+    QString whatsThis;
+#endif
+#ifndef QT_NO_ACCESSIBILITY
+    QString accessibleName;
+    QString accessibleDescription;
+#endif
+
+    // Other variables.
+    uint inheritedFontResolveMask;
+    uint inheritedPaletteResolveMask;
+    short leftmargin;
+    short topmargin;
+    short rightmargin;
+    short bottommargin;
+    signed char leftLayoutItemMargin;
+    signed char topLayoutItemMargin;
+    signed char rightLayoutItemMargin;
+    signed char bottomLayoutItemMargin;
+    static int instanceCounter; // Current number of widget instances
+    static int maxInstances; // Maximum number of widget instances
+    Qt::HANDLE hd;
+    QWidgetData data;
+    QSizePolicy size_policy;
+    QLocale locale;
+    QPoint redirectOffset;
+#ifndef QT_NO_ACTION
+    QList<QAction*> actions;
+#endif
+    QMap<Qt::GestureType, Qt::GestureContext> gestureContext;
+
+    // Bit fields.
+    uint high_attributes[3]; // the low ones are in QWidget::widget_attributes
+    QPalette::ColorRole fg_role : 8;
+    QPalette::ColorRole bg_role : 8;
+    uint dirtyOpaqueChildren : 1;
+    uint isOpaque : 1;
+    uint inDirtyList : 1;
+    uint isScrolled : 1;
+    uint isMoved : 1;
+    uint usesDoubleBufferedGLContext : 1;
+
+    // *************************** Platform specific ************************************
+#if defined(Q_WS_X11) // <----------------------------------------------------------- X11
+    QX11Info xinfo;
+    Qt::HANDLE picture;
+    static QWidget *mouseGrabber;
+    static QWidget *keyboardGrabber;
+
+    void setWindowRole();
+    void sendStartupMessage(const char *message) const;
+    void setNetWmWindowTypes();
+    void x11UpdateIsOpaque();
+    bool isBackgroundInherited() const;
+#elif defined(Q_WS_WIN) // <--------------------------------------------------------- WIN
+    uint noPaintOnScreen : 1; // see qwidget_win.cpp ::paintEngine()
+    uint nativeGesturePanEnabled : 1;
+
+    bool shouldShowMaximizeButton();
+    void winUpdateIsOpaque();
+    void reparentChildren();
+#ifndef QT_NO_DRAGANDDROP
+    QOleDropTarget *registerOleDnd(QWidget *widget);
+    void unregisterOleDnd(QWidget *widget, QOleDropTarget *target);
+#endif
+    void grabMouseWhileInWindow();
+    void registerTouchWindow();
+    void winSetupGestures();
+#elif defined(Q_WS_MAC) // <--------------------------------------------------------- MAC
+    // This is new stuff
+    uint needWindowChange : 1;
+    uint isGLWidget : 1;
+
+    // Each wiget keeps a list of all its child and grandchild OpenGL widgets.
+    // This list is used to update the gl context whenever a parent and a granparent
+    // moves, and also to check for intersections with gl widgets within the window
+    // when a widget moves.
+    struct GlWidgetInfo
+    {
+        GlWidgetInfo(QWidget *widget) : widget(widget), lastUpdateWidget(0) { }
+        bool operator==(const GlWidgetInfo &other) const { return (widget == other.widget); }
+        QWidget * widget;
+        QWidget * lastUpdateWidget;
+    };
+
+    // dirtyOnWidget contains the areas in the widget that needs to be repained,
+    // in the same way as dirtyOnScreen does for the window. Areas are added in
+    // dirtyWidget_sys and cleared in the paint event. In scroll_sys we then use
+    // this information repaint invalid areas when widgets are scrolled.
+    QRegion dirtyOnWidget;
+    EventHandlerRef window_event;
+    QList<GlWidgetInfo> glWidgets;
+
+    //these are here just for code compat (HIViews)
+    Qt::HANDLE qd_hd;
+
+    void macUpdateSizeAttribute();
+    void macUpdateHideOnSuspend();
+    void macUpdateOpaqueSizeGrip();
+    void macUpdateIgnoreMouseEvents();
+    void macUpdateMetalAttribute();
+    void macUpdateIsOpaque();
+    void setEnabled_helper_sys(bool enable);
+    bool isRealWindow() const;
+    void adjustWithinMaxAndMinSize(int &w, int &h);
+    void applyMaxAndMinSizeOnWindow();
+    void update_sys(const QRect &rect);
+    void update_sys(const QRegion &rgn);
+    void setGeometry_sys_helper(int, int, int, int, bool);
+    void setWindowModified_sys(bool b);
+    void updateMaximizeButton_sys();
+    void setWindowFilePath_sys(const QString &filePath);
+    void createWindow_sys();
+    void recreateMacWindow();
+#ifndef QT_MAC_USE_COCOA
+    void initWindowPtr();
+    void finishCreateWindow_sys_Carbon(OSWindowRef windowRef);
+#else
+    void finishCreateWindow_sys_Cocoa(void * /*NSWindow * */ windowRef);
+    void syncCocoaMask();
+    void finishCocoaMaskSetup();
+#endif
+    void determineWindowClass();
+    void transferChildren();
+    bool qt_mac_dnd_event(uint, DragRef);
+    void toggleDrawers(bool);
+    //mac event functions
+    static bool qt_create_root_win();
+    static void qt_clean_root_win();
+    static bool qt_mac_update_sizer(QWidget *, int up = 0);
+    static OSStatus qt_window_event(EventHandlerCallRef er, EventRef event, void *);
+    static OSStatus qt_widget_event(EventHandlerCallRef er, EventRef event, void *);
+    static bool qt_widget_rgn(QWidget *, short, RgnHandle, bool);
+    void registerTouchWindow();
+#elif defined(Q_WS_QWS) // <--------------------------------------------------------- QWS
+    void setMaxWindowState_helper();
+    void setFullScreenSize_helper();
+    void moveSurface(QWindowSurface *surface, const QPoint &offset);
+    QRegion localRequestedRegion() const;
+    QRegion localAllocatedRegion() const;
+
+    friend class QWSManager;
+    friend class QWSManagerPrivate;
+    friend class QDecoration;
+#ifndef QT_NO_CURSOR
+    void updateCursor() const;
+#endif
+    QScreen* getScreen() const;
+#elif defined(Q_OS_SYMBIAN) // <--------------------------------------------------------- SYMBIAN
+    static QWidget *mouseGrabber;
+    static QWidget *keyboardGrabber;
+    void s60UpdateIsOpaque();
+    void reparentChildren();
+    void registerTouchWindow();
+#endif
+
+};
+
+struct QWidgetPaintContext
+{
+    inline QWidgetPaintContext(QPaintDevice *d, const QRegion &r, const QPoint &o, int f,
+                               QPainter *p, QWidgetBackingStore *b)
+        : pdev(d), rgn(r), offset(o), flags(f), sharedPainter(p), backingStore(b), painter(0) {}
+
+    QPaintDevice *pdev;
+    QRegion rgn;
+    QPoint offset;
+    int flags;
+    QPainter *sharedPainter;
+    QWidgetBackingStore *backingStore;
+    QPainter *painter;
+};
+
+class QWidgetEffectSourcePrivate : public QGraphicsEffectSourcePrivate
+{
+public:
+    QWidgetEffectSourcePrivate(QWidget *widget)
+        : QGraphicsEffectSourcePrivate(), m_widget(widget), context(0), updateDueToGraphicsEffect(false)
+    {}
+
+    inline void detach()
+    { m_widget->setGraphicsEffect(0); }
+
+    inline const QGraphicsItem *graphicsItem() const
+    { return 0; }
+
+    inline const QWidget *widget() const
+    { return m_widget; }
+
+    inline void update()
+    {
+        updateDueToGraphicsEffect = true;
+        m_widget->update();
+        updateDueToGraphicsEffect = false;
+    }
+
+    inline bool isPixmap() const
+    { return false; }
+
+    inline void effectBoundingRectChanged()
+    {
+        // ### This function should take a rect parameter; then we can avoid
+        // updating too much on the parent widget.
+        if (QWidget *parent = m_widget->parentWidget())
+            parent->update();
+        else
+            update();
+    }
+
+    inline const QStyleOption *styleOption() const
+    { return 0; }
+
+    inline QRect deviceRect() const
+    { return m_widget->window()->rect(); }
+
+    QRectF boundingRect(Qt::CoordinateSystem system) const;
+    void draw(QPainter *p);
+    QPixmap pixmap(Qt::CoordinateSystem system, QPoint *offset) const;
+
+    QWidget *m_widget;
+    QWidgetPaintContext *context;
+    QTransform lastEffectTransform;
+    bool updateDueToGraphicsEffect;
+};
+
+inline QWExtra *QWidgetPrivate::extraData() const
+{
+    return extra;
+}
+
+inline QTLWExtra *QWidgetPrivate::topData() const
+{
+    const_cast<QWidgetPrivate *>(this)->createTLExtra();
+    return extra->topextra;
+}
+
+inline QTLWExtra *QWidgetPrivate::maybeTopData() const
+{
+    return extra ? extra->topextra : 0;
+}
+
+inline QPainter *QWidgetPrivate::sharedPainter() const
+{
+    Q_Q(const QWidget);
+    QTLWExtra *x = q->window()->d_func()->maybeTopData();
+    return x ? x->sharedPainter : 0;
+}
+
+inline void QWidgetPrivate::setSharedPainter(QPainter *painter)
+{
+    Q_Q(QWidget);
+    QTLWExtra *x = q->window()->d_func()->topData();
+    x->sharedPainter = painter;
+}
+
+inline QWidgetBackingStore *QWidgetPrivate::maybeBackingStore() const
+{
+    Q_Q(const QWidget);
+    QTLWExtra *x = q->window()->d_func()->maybeTopData();
+    return x ? x->backingStore : 0;
+}
+
+QT_END_NAMESPACE
+
+#endif // QWIDGET_P_H