src/qt/include/qwidget.h

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/****************************************************************************
** $Id: qt/qwidget.h   3.3.8   edited Jan 11 14:38 $
**
** Definition of QWidget class
**
** Created : 931029
**
** Copyright (C) 1992-2007 Trolltech ASA.  All rights reserved.
**
** This file is part of the kernel module of the Qt GUI Toolkit.
**
** This file may be distributed under the terms of the Q Public License
** as defined by Trolltech ASA of Norway and appearing in the file
** LICENSE.QPL included in the packaging of this file.
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
**
** Licensees holding valid Qt Enterprise Edition or Qt Professional Edition
** licenses may use this file in accordance with the Qt Commercial License
** Agreement provided with the Software.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
**   information about Qt Commercial License Agreements.
** See http://www.trolltech.com/qpl/ for QPL licensing information.
** See http://www.trolltech.com/gpl/ for GPL licensing information.
**
** Contact info@trolltech.com if any conditions of this licensing are
** not clear to you.
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**********************************************************************/

#ifndef QWIDGET_H
#define QWIDGET_H

#ifndef QT_H
#include "qwindowdefs.h"
#include "qobject.h"
#include "qpaintdevice.h"
#include "qpalette.h"
#include "qfont.h"
#include "qfontmetrics.h"
#include "qfontinfo.h"
#include "qsizepolicy.h"
#endif // QT_H

class QLayout;
struct QWExtra;
struct QTLWExtra;
class QFocusData;
class QCursor;
class QWSRegionManager;
class QStyle;

class Q_EXPORT QWidget : public QObject, public QPaintDevice
{
    Q_OBJECT
    Q_ENUMS( BackgroundMode FocusPolicy BackgroundOrigin )
    Q_PROPERTY( bool isTopLevel READ isTopLevel )
    Q_PROPERTY( bool isDialog READ isDialog )
    Q_PROPERTY( bool isModal READ isModal )
    Q_PROPERTY( bool isPopup READ isPopup )
    Q_PROPERTY( bool isDesktop READ isDesktop )
    Q_PROPERTY( bool enabled READ isEnabled WRITE setEnabled )
    Q_PROPERTY( QRect geometry READ geometry WRITE setGeometry )
    Q_PROPERTY( QRect frameGeometry READ frameGeometry )
    Q_PROPERTY( int x READ x )
    Q_PROPERTY( int y READ y )
    Q_PROPERTY( QPoint pos READ pos WRITE move DESIGNABLE false STORED false )
    Q_PROPERTY( QSize frameSize READ frameSize )
    Q_PROPERTY( QSize size READ size WRITE resize DESIGNABLE false STORED false )
    Q_PROPERTY( int width READ width )
    Q_PROPERTY( int height READ height )
    Q_PROPERTY( QRect rect READ rect )
    Q_PROPERTY( QRect childrenRect READ childrenRect )
    Q_PROPERTY( QRegion childrenRegion READ childrenRegion )
    Q_PROPERTY( QSizePolicy sizePolicy READ sizePolicy WRITE setSizePolicy )
    Q_PROPERTY( QSize minimumSize READ minimumSize WRITE setMinimumSize )
    Q_PROPERTY( QSize maximumSize READ maximumSize WRITE setMaximumSize )
    Q_PROPERTY( int minimumWidth READ minimumWidth WRITE setMinimumWidth STORED false DESIGNABLE false )
    Q_PROPERTY( int minimumHeight READ minimumHeight WRITE setMinimumHeight STORED false DESIGNABLE false )
    Q_PROPERTY( int maximumWidth READ maximumWidth WRITE setMaximumWidth STORED false DESIGNABLE false )
    Q_PROPERTY( int maximumHeight READ maximumHeight WRITE setMaximumHeight STORED false DESIGNABLE false )
    Q_PROPERTY( QSize sizeIncrement READ sizeIncrement WRITE setSizeIncrement )
    Q_PROPERTY( QSize baseSize READ baseSize WRITE setBaseSize )
    Q_PROPERTY( BackgroundMode backgroundMode READ backgroundMode WRITE setBackgroundMode DESIGNABLE false )
    Q_PROPERTY( QColor paletteForegroundColor READ paletteForegroundColor WRITE setPaletteForegroundColor RESET unsetPalette )
    Q_PROPERTY( QColor paletteBackgroundColor READ paletteBackgroundColor WRITE setPaletteBackgroundColor RESET unsetPalette )
    Q_PROPERTY( QPixmap paletteBackgroundPixmap READ paletteBackgroundPixmap WRITE setPaletteBackgroundPixmap RESET unsetPalette )
    Q_PROPERTY( QBrush backgroundBrush READ backgroundBrush )
    Q_PROPERTY( QColorGroup colorGroup READ colorGroup )
    Q_PROPERTY( QPalette palette READ palette WRITE setPalette RESET unsetPalette  STORED ownPalette )
    Q_PROPERTY( BackgroundOrigin backgroundOrigin READ backgroundOrigin WRITE setBackgroundOrigin )
    Q_PROPERTY( bool ownPalette READ ownPalette )
    Q_PROPERTY( QFont font READ font WRITE setFont RESET unsetFont STORED ownFont )
    Q_PROPERTY( bool ownFont READ ownFont )
#ifndef QT_NO_CURSOR
    Q_PROPERTY( QCursor cursor READ cursor WRITE setCursor RESET unsetCursor STORED ownCursor )
    Q_PROPERTY( bool ownCursor READ ownCursor )
#endif
#ifndef QT_NO_WIDGET_TOPEXTRA
    Q_PROPERTY( QString caption READ caption WRITE setCaption )
    Q_PROPERTY( QPixmap icon READ icon WRITE setIcon )
    Q_PROPERTY( QString iconText READ iconText WRITE setIconText )
#endif
    Q_PROPERTY( bool mouseTracking READ hasMouseTracking WRITE setMouseTracking )
    Q_PROPERTY( bool underMouse READ hasMouse )
    Q_PROPERTY( bool isActiveWindow READ isActiveWindow )
    Q_PROPERTY( bool focusEnabled READ isFocusEnabled )
    Q_PROPERTY( FocusPolicy focusPolicy READ focusPolicy WRITE setFocusPolicy )
    Q_PROPERTY( bool focus READ hasFocus )
    Q_PROPERTY( bool updatesEnabled READ isUpdatesEnabled WRITE setUpdatesEnabled DESIGNABLE false )
    Q_PROPERTY( bool visible READ isVisible )
    Q_PROPERTY( QRect visibleRect READ visibleRect ) // obsolete
    Q_PROPERTY( bool hidden READ isHidden WRITE setHidden DESIGNABLE false SCRIPTABLE false )
    Q_PROPERTY( bool shown READ isShown WRITE setShown DESIGNABLE false SCRIPTABLE false )
    Q_PROPERTY( bool minimized READ isMinimized )
    Q_PROPERTY( bool maximized READ isMaximized )
    Q_PROPERTY( bool fullScreen READ isFullScreen )
    Q_PROPERTY( QSize sizeHint READ sizeHint )
    Q_PROPERTY( QSize minimumSizeHint READ minimumSizeHint )
    Q_PROPERTY( QRect microFocusHint READ microFocusHint )
    Q_PROPERTY( bool acceptDrops READ acceptDrops WRITE setAcceptDrops )
    Q_PROPERTY( bool autoMask READ autoMask WRITE setAutoMask DESIGNABLE false SCRIPTABLE false )
    Q_PROPERTY( bool customWhatsThis READ customWhatsThis )
    Q_PROPERTY( bool inputMethodEnabled READ isInputMethodEnabled WRITE setInputMethodEnabled DESIGNABLE false SCRIPTABLE false )
    Q_PROPERTY( double windowOpacity READ windowOpacity WRITE setWindowOpacity DESIGNABLE false )

public:
    Q_EXPLICIT QWidget( QWidget* parent=0, const char* name=0, WFlags f=0 );
    ~QWidget();

    WId          winId() const;
    void         setName( const char *name );
#ifndef QT_NO_STYLE
    // GUI style setting

    QStyle     &style() const;
    void        setStyle( QStyle * );
    QStyle*     setStyle( const QString& );
#endif
    // Widget types and states

    bool         isTopLevel()   const;
    bool         isDialog()     const;
    bool         isPopup()      const;
    bool         isDesktop()    const;
    bool         isModal()      const;

    bool         isEnabled()    const;
    bool         isEnabledTo(QWidget*) const;
    bool         isEnabledToTLW() const;

public slots:
    virtual void setEnabled( bool );
    void setDisabled( bool );

    // Widget coordinates

public:
    QRect        frameGeometry() const;
    const QRect &geometry()     const;
    int          x()            const;
    int          y()            const;
    QPoint       pos()          const;
    QSize        frameSize()    const;
    QSize        size()         const;
    int          width()        const;
    int          height()       const;
    QRect        rect()         const;
    QRect        childrenRect() const;
    QRegion      childrenRegion() const;

    QSize        minimumSize()   const;
    QSize        maximumSize()   const;
    int          minimumWidth()  const;
    int          minimumHeight() const;
    int          maximumWidth()  const;
    int          maximumHeight() const;
    void         setMinimumSize( const QSize & );
    virtual void setMinimumSize( int minw, int minh );
    void         setMaximumSize( const QSize & );
    virtual void setMaximumSize( int maxw, int maxh );
    void         setMinimumWidth( int minw );
    void         setMinimumHeight( int minh );
    void         setMaximumWidth( int maxw );
    void         setMaximumHeight( int maxh );

    QSize        sizeIncrement() const;
    void         setSizeIncrement( const QSize & );
    virtual void setSizeIncrement( int w, int h );
    QSize        baseSize() const;
    void         setBaseSize( const QSize & );
    void         setBaseSize( int basew, int baseh );

    void        setFixedSize( const QSize & );
    void        setFixedSize( int w, int h );
    void        setFixedWidth( int w );
    void        setFixedHeight( int h );

    // Widget coordinate mapping

    QPoint       mapToGlobal( const QPoint & )   const;
    QPoint       mapFromGlobal( const QPoint & ) const;
    QPoint       mapToParent( const QPoint & )   const;
    QPoint       mapFromParent( const QPoint & ) const;
    QPoint       mapTo( QWidget *, const QPoint & ) const;
    QPoint       mapFrom( QWidget *, const QPoint & ) const;

    QWidget     *topLevelWidget()   const;

    // Widget attribute functions

    BackgroundMode      backgroundMode() const;
    virtual void        setBackgroundMode( BackgroundMode );
    void                setBackgroundMode( BackgroundMode, BackgroundMode );

    const QColor &      foregroundColor() const;

    const QColor &      eraseColor() const;
    virtual void        setEraseColor( const QColor & );

    const QPixmap *     erasePixmap() const;
    virtual void        setErasePixmap( const QPixmap & );

#ifndef QT_NO_PALETTE
    const QColorGroup & colorGroup() const;
    const QPalette &    palette()    const;
    bool                ownPalette() const;
    virtual void        setPalette( const QPalette & );
    void                unsetPalette();
#endif

    const QColor &      paletteForegroundColor() const;
    void                setPaletteForegroundColor( const QColor & );

    const QColor &      paletteBackgroundColor() const;
    virtual void        setPaletteBackgroundColor( const QColor & );

    const QPixmap *     paletteBackgroundPixmap() const;
    virtual void        setPaletteBackgroundPixmap( const QPixmap & );

    const QBrush&       backgroundBrush() const;

    QFont               font() const;
    bool                ownFont() const;
    virtual void        setFont( const QFont & );
    void                unsetFont();
    QFontMetrics        fontMetrics() const;
    QFontInfo           fontInfo() const;

#ifndef QT_NO_CURSOR
    const QCursor      &cursor() const;
    bool                ownCursor() const;
    virtual void        setCursor( const QCursor & );
    virtual void        unsetCursor();
#endif
#ifndef QT_NO_WIDGET_TOPEXTRA
    QString             caption() const;
    const QPixmap      *icon() const;
    QString             iconText() const;
#endif
    bool                hasMouseTracking() const;
    bool                hasMouse() const;

    virtual void        setMask( const QBitmap & );
    virtual void        setMask( const QRegion & );
    void                clearMask();

    const QColor &      backgroundColor() const; // obsolete, use eraseColor()
    virtual void        setBackgroundColor( const QColor & ); // obsolete, use setEraseColor()
    const QPixmap *     backgroundPixmap() const; // obsolete, use erasePixmap()
    virtual void        setBackgroundPixmap( const QPixmap & ); // obsolete, use setErasePixmap()

public slots:
#ifndef QT_NO_WIDGET_TOPEXTRA
    virtual void        setCaption( const QString &);
    virtual void        setIcon( const QPixmap & );
    virtual void        setIconText( const QString &);
#endif
    virtual void        setMouseTracking( bool enable );

    // Keyboard input focus functions

    virtual void        setFocus();
    void                clearFocus();

public:
    enum FocusPolicy {
        NoFocus = 0,
        TabFocus = 0x1,
        ClickFocus = 0x2,
        StrongFocus = TabFocus | ClickFocus | 0x8,
        WheelFocus = StrongFocus | 0x4
    };

    bool                isActiveWindow() const;
    virtual void        setActiveWindow();
    bool                isFocusEnabled() const;

    FocusPolicy         focusPolicy() const;
    virtual void        setFocusPolicy( FocusPolicy );
    bool                hasFocus() const;
    static void         setTabOrder( QWidget *, QWidget * );
    virtual void        setFocusProxy( QWidget * );
    QWidget *           focusProxy() const;

    void setInputMethodEnabled( bool b );
    bool isInputMethodEnabled() const;
    // Grab functions

    void                grabMouse();
#ifndef QT_NO_CURSOR
    void                grabMouse( const QCursor & );
#endif
    void                releaseMouse();
    void                grabKeyboard();
    void                releaseKeyboard();
    static QWidget *    mouseGrabber();
    static QWidget *    keyboardGrabber();

    // Update/refresh functions

    bool                isUpdatesEnabled() const;

#if 0 //def Q_WS_QWS
    void                repaintUnclipped( const QRegion &, bool erase = TRUE );
#endif
public slots:
    virtual void        setUpdatesEnabled( bool enable );
    void                update();
    void                update( int x, int y, int w, int h );
    void                update( const QRect& );
    void                repaint();
    void                repaint( bool erase );
    void                repaint( int x, int y, int w, int h, bool erase=TRUE );
    void                repaint( const QRect &, bool erase = TRUE );
    void                repaint( const QRegion &, bool erase = TRUE );

    // Widget management functions

    virtual void        show();
    virtual void        hide();
    void                setShown( bool show );
    void                setHidden( bool hide );
#ifndef QT_NO_COMPAT
    void                iconify() { showMinimized(); }
#endif
    virtual void        showMinimized();
    virtual void        showMaximized();
    void                showFullScreen();
    virtual void        showNormal();
    virtual void        polish();
    void                constPolish() const;
    bool                close();

    void                raise();
    void                lower();
    void                stackUnder( QWidget* );
    virtual void        move( int x, int y );
    void                move( const QPoint & );
    virtual void        resize( int w, int h );
    void                resize( const QSize & );
    virtual void        setGeometry( int x, int y, int w, int h );
    virtual void        setGeometry( const QRect & ); // ### make non virtual in Qt 4?

public:
    virtual bool        close( bool alsoDelete );
    bool                isVisible()     const;
    bool                isVisibleTo(QWidget*) const;
    bool                isVisibleToTLW() const; // obsolete
    QRect               visibleRect() const; // obsolete
    bool                isHidden() const;
    bool                isShown() const;
    bool                isMinimized() const;
    bool                isMaximized() const;
    bool                isFullScreen() const;

    uint windowState() const;
    void setWindowState(uint windowState);

    virtual QSize       sizeHint() const;
    virtual QSize       minimumSizeHint() const;
    virtual QSizePolicy sizePolicy() const;
    virtual void        setSizePolicy( QSizePolicy );
    void                setSizePolicy( QSizePolicy::SizeType hor, QSizePolicy::SizeType ver, bool hfw = FALSE );
    virtual int heightForWidth(int) const;

    QRegion     clipRegion() const;

// ### move together with other slots in Qt 4.0
public slots:
    virtual void        adjustSize();

public:
#ifndef QT_NO_LAYOUT
    QLayout *           layout() const { return lay_out; }
#endif
    void                updateGeometry();
    virtual void        reparent( QWidget *parent, WFlags, const QPoint &,
                                  bool showIt=FALSE );
    void                reparent( QWidget *parent, const QPoint &,
                                  bool showIt=FALSE );
#ifndef QT_NO_COMPAT
    void                recreate( QWidget *parent, WFlags f, const QPoint & p,
                                  bool showIt=FALSE ) { reparent(parent,f,p,showIt); }
#endif

    void                erase();
    void                erase( int x, int y, int w, int h );
    void                erase( const QRect & );
    void                erase( const QRegion & );
    void                scroll( int dx, int dy );
    void                scroll( int dx, int dy, const QRect& );

    void                drawText( int x, int y, const QString &);
    void                drawText( const QPoint &, const QString &);

    // Misc. functions

    QWidget *           focusWidget() const;
    QRect               microFocusHint() const;

    // drag and drop

    bool                acceptDrops() const;
    virtual void        setAcceptDrops( bool on );

    // transparency and pseudo transparency

    virtual void        setAutoMask(bool);
    bool                autoMask() const;

    enum BackgroundOrigin { WidgetOrigin, ParentOrigin, WindowOrigin, AncestorOrigin };

    virtual void setBackgroundOrigin( BackgroundOrigin );
    BackgroundOrigin backgroundOrigin() const;
    QPoint backgroundOffset() const;

    // whats this help
    virtual bool customWhatsThis() const;

    QWidget *           parentWidget( bool sameWindow = FALSE ) const;
    WState              testWState( WState s ) const;
    WFlags              testWFlags( WFlags f ) const;
    static QWidget *    find( WId );
    static QWidgetMapper *wmapper();

    QWidget  *childAt( int x, int y, bool includeThis = FALSE ) const;
    QWidget  *childAt( const QPoint &, bool includeThis = FALSE ) const;

#if defined(Q_WS_QWS)
    virtual QGfx * graphicsContext(bool clip_children=TRUE) const;
#endif
#if defined(Q_WS_MAC)
    QRegion clippedRegion(bool do_children=TRUE);
    uint clippedSerial(bool do_children=TRUE);
#ifndef QMAC_NO_QUARTZ
    CGContextRef macCGContext(bool clipped=TRUE) const;
#endif
#endif

    void setWindowOpacity(double level);
    double windowOpacity() const;

protected:
    // Event handlers
    bool         event( QEvent * );
    virtual void mousePressEvent( QMouseEvent * );
    virtual void mouseReleaseEvent( QMouseEvent * );
    virtual void mouseDoubleClickEvent( QMouseEvent * );
    virtual void mouseMoveEvent( QMouseEvent * );
#ifndef QT_NO_WHEELEVENT
    virtual void wheelEvent( QWheelEvent * );
#endif
    virtual void keyPressEvent( QKeyEvent * );
    virtual void keyReleaseEvent( QKeyEvent * );
    virtual void focusInEvent( QFocusEvent * );
    virtual void focusOutEvent( QFocusEvent * );
    virtual void enterEvent( QEvent * );
    virtual void leaveEvent( QEvent * );
    virtual void paintEvent( QPaintEvent * );
    virtual void moveEvent( QMoveEvent * );
    virtual void resizeEvent( QResizeEvent * );
    virtual void closeEvent( QCloseEvent * );
    virtual void contextMenuEvent( QContextMenuEvent * );
    virtual void imStartEvent( QIMEvent * );
    virtual void imComposeEvent( QIMEvent * );
    virtual void imEndEvent( QIMEvent * );
    virtual void tabletEvent( QTabletEvent * );

#ifndef QT_NO_DRAGANDDROP
    virtual void dragEnterEvent( QDragEnterEvent * );
    virtual void dragMoveEvent( QDragMoveEvent * );
    virtual void dragLeaveEvent( QDragLeaveEvent * );
    virtual void dropEvent( QDropEvent * );
#endif

    virtual void showEvent( QShowEvent * );
    virtual void hideEvent( QHideEvent * );

#if defined(Q_WS_MAC)
    virtual bool macEvent( MSG * );
#endif
#if defined(Q_WS_WIN)
    virtual bool winEvent( MSG * );
#endif
#if defined(Q_WS_X11)
    virtual bool x11Event( XEvent * );
#endif
#if defined(Q_WS_QWS)
    virtual bool qwsEvent( QWSEvent * );
    virtual unsigned char *scanLine( int ) const;
    virtual int bytesPerLine() const;
#endif

    virtual void updateMask();

    // Misc. protected functions

#ifndef QT_NO_STYLE
    virtual void styleChange( QStyle& );
#endif
    virtual void enabledChange( bool oldEnabled );
#ifndef QT_NO_PALETTE
    virtual void paletteChange( const QPalette & );
#endif
    virtual void fontChange( const QFont & );
    virtual void windowActivationChange( bool oldActive );

    int          metric( int )  const;

    void         resetInputContext();

    virtual void create( WId = 0, bool initializeWindow = TRUE,
                         bool destroyOldWindow = TRUE );
    virtual void destroy( bool destroyWindow = TRUE,
                          bool destroySubWindows = TRUE );
    uint         getWState() const;
    virtual void setWState( uint );
    void         clearWState( uint n );
    WFlags       getWFlags() const;
    virtual void setWFlags( WFlags );
    void         clearWFlags( WFlags n );

    virtual bool focusNextPrevChild( bool next );

    QWExtra     *extraData();
    QTLWExtra   *topData();
    QFocusData  *focusData();

    virtual void setKeyCompression(bool);
    virtual void setMicroFocusHint(int x, int y, int w, int h, bool text=TRUE, QFont *f = 0);

#if defined(Q_WS_MAC)
    void dirtyClippedRegion(bool);
    bool isClippedRegionDirty();
    virtual void setRegionDirty(bool);
    virtual void macWidgetChangedWindow();
#endif

private slots:
    void         focusProxyDestroyed();

private:
    void         setFontSys( QFont *f = 0 );
#if defined(Q_WS_X11)
    void         createInputContext();
    void         destroyInputContext();
    void         focusInputContext();
    void         checkChildrenDnd();
#elif defined(Q_WS_MAC)
    uint    own_id : 1, macDropEnabled : 1;
    EventHandlerRef window_event;
    //mac event functions
    void    propagateUpdates(bool update_rgn=TRUE);
    void    update( const QRegion& );
    //friends, way too many - fix this immediately!
    friend void qt_clean_root_win();
    friend bool qt_recreate_root_win();
    friend QPoint posInWindow(QWidget *);
    friend bool qt_mac_update_sizer(QWidget *, int);
    friend QWidget *qt_recursive_match(QWidget *widg, int x, int y);
    friend bool qt_paint_children(QWidget *,QRegion &, uchar ops);
    friend QMAC_PASCAL OSStatus qt_window_event(EventHandlerCallRef er, EventRef event, void *);
    friend void qt_event_request_updates(QWidget *, const QRegion &, bool subtract);
    friend bool qt_window_rgn(WId, short, RgnHandle, bool);
    friend class QDragManager;
#endif

#ifndef QT_NO_LAYOUT
    void         setLayout( QLayout *l );
#endif
    void         setWinId( WId );
    void         showWindow();
    void         hideWindow();
    void         showChildren( bool spontaneous );
    void         hideChildren( bool spontaneous );
    void         reparentSys( QWidget *parent, WFlags, const QPoint &,  bool showIt);
    void         createTLExtra();
    void         createExtra();
    void         deleteExtra();
    void         createSysExtra();
    void         deleteSysExtra();
    void         createTLSysExtra();
    void         deleteTLSysExtra();
    void         deactivateWidgetCleanup();
    void         internalSetGeometry( int, int, int, int, bool );
    void         reparentFocusWidgets( QWidget * );
    QFocusData  *focusData( bool create );
    void         setBackgroundFromMode();
    void         setBackgroundColorDirect( const QColor & );
    void         setBackgroundPixmapDirect( const QPixmap & );
    void         setBackgroundModeDirect( BackgroundMode );
    void         setBackgroundEmpty();
    void         updateFrameStrut() const;
#if defined(Q_WS_X11)
    void         setBackgroundX11Relative();
#endif

    WId          winid;
    uint         widget_state;
    uint         widget_flags;
    uint         focus_policy : 4;
    uint         own_font :1;
    uint         own_palette :1;
    uint         sizehint_forced :1;
    uint         is_closing :1;
    uint         in_show : 1;
    uint         in_show_maximized : 1;
    uint         fstrut_dirty : 1;
    uint         im_enabled : 1;
    QRect        crect;
    QColor       bg_col;
#ifndef QT_NO_PALETTE
    QPalette     pal;
#endif
    QFont        fnt;
#ifndef QT_NO_LAYOUT
    QLayout     *lay_out;
#endif
    QWExtra     *extra;
#if defined(Q_WS_QWS)
    QRegion      req_region;                    // Requested region
    mutable QRegion      paintable_region;      // Paintable region
    mutable bool         paintable_region_dirty;// needs to be recalculated
    mutable QRegion      alloc_region;          // Allocated region
    mutable bool         alloc_region_dirty;    // needs to be recalculated
    mutable int          overlapping_children;  // Handle overlapping children

    int          alloc_region_index;
    int          alloc_region_revision;

    void updateOverlappingChildren() const;
    void setChildrenAllocatedDirty();
    void setChildrenAllocatedDirty( const QRegion &r, const QWidget *dirty=0 );
    bool isAllocatedRegionDirty() const;
    void updateRequestedRegion( const QPoint &gpos );
    QRegion requestedRegion() const;
    QRegion allocatedRegion() const;
    QRegion paintableRegion() const;

    void updateGraphicsContext( QGfx *qgfx_qws, bool clip_children ) const;
#ifndef QT_NO_CURSOR
    void updateCursor( const QRegion &r ) const;
#endif

    // used to accumulate dirty region when children moved/resized.
    QRegion dirtyChildren;
    bool isSettingGeometry;
    friend class QWSManager;
#endif
    static int instanceCounter;  // Current number of widget instances
    static int maxInstances;     // Maximum number of widget instances

    static void  createMapper();
    static void  destroyMapper();
    static QWidgetList   *wList();
    static QWidgetList   *tlwList();
    static QWidgetMapper *mapper;
    friend class QApplication;
    friend class QBaseApplication;
    friend class QPainter;
    friend class QFontMetrics;
    friend class QFontInfo;
    friend class QETWidget;
    friend class QLayout;

private:        // Disabled copy constructor and operator=
#if defined(Q_DISABLE_COPY)
    QWidget( const QWidget & );
    QWidget &operator=( const QWidget & );
#endif

public: // obsolete functions to dissappear or to become inline in 3.0
#ifndef QT_NO_PALETTE
    void setPalette( const QPalette &p, bool ) { setPalette( p ); }
#endif
    void setFont( const QFont &f, bool ) { setFont( f ); }
};


inline Qt::WState QWidget::testWState( WState s ) const
{ return (widget_state & s); }

inline Qt::WFlags QWidget::testWFlags( WFlags f ) const
{ return (widget_flags & f); }


inline WId QWidget::winId() const
{ return winid; }

inline bool QWidget::isTopLevel() const
{ return testWFlags(WType_TopLevel); }

inline bool QWidget::isDialog() const
{ return testWFlags(WType_Dialog); }

inline bool QWidget::isPopup() const
{ return testWFlags(WType_Popup); }

inline bool QWidget::isDesktop() const
{ return testWFlags(WType_Desktop); }

inline bool QWidget::isEnabled() const
{ return !testWState(WState_Disabled); }

inline bool QWidget::isModal() const
{ return testWFlags(WShowModal); }

inline bool QWidget::isEnabledToTLW() const
{ return isEnabled(); }

inline const QRect &QWidget::geometry() const
{ return crect; }

inline QSize QWidget::size() const
{ return crect.size(); }

inline int QWidget::width() const
{ return crect.width(); }

inline int QWidget::height() const
{ return crect.height(); }

inline QRect QWidget::rect() const
{ return QRect(0,0,crect.width(),crect.height()); }

inline int QWidget::minimumWidth() const
{ return minimumSize().width(); }

inline int QWidget::minimumHeight() const
{ return minimumSize().height(); }

inline int QWidget::maximumWidth() const
{ return maximumSize().width(); }

inline int QWidget::maximumHeight() const
{ return maximumSize().height(); }

inline void QWidget::setMinimumSize( const QSize &s )
{ setMinimumSize(s.width(),s.height()); }

inline void QWidget::setMaximumSize( const QSize &s )
{ setMaximumSize(s.width(),s.height()); }

inline void QWidget::setSizeIncrement( const QSize &s )
{ setSizeIncrement(s.width(),s.height()); }

inline void QWidget::setBaseSize( const QSize &s )
{ setBaseSize(s.width(),s.height()); }

inline const QColor &QWidget::eraseColor() const
{ return bg_col; }

#ifndef QT_NO_PALETTE
inline const QPalette &QWidget::palette() const
{ return pal; }
#endif

inline QFont QWidget::font() const
{ return fnt; }

inline QFontMetrics QWidget::fontMetrics() const
{ return QFontMetrics(font()); }

inline QFontInfo QWidget::fontInfo() const
{ return QFontInfo(font()); }

inline bool QWidget::hasMouseTracking() const
{ return testWState(WState_MouseTracking); }

inline bool QWidget::hasMouse() const
{ return testWState(WState_HasMouse); }

inline bool  QWidget::isFocusEnabled() const
{ return (FocusPolicy)focus_policy != NoFocus; }

inline QWidget::FocusPolicy QWidget::focusPolicy() const
{ return (FocusPolicy)focus_policy; }

inline bool QWidget::isUpdatesEnabled() const
{ return !testWState(WState_BlockUpdates); }

inline void QWidget::update( const QRect &r )
{ update( r.x(), r.y(), r.width(), r.height() ); }

inline void QWidget::repaint()
{ repaint( TRUE ); }

inline void QWidget::repaint( const QRect &r, bool erase )
{ repaint( r.x(), r.y(), r.width(), r.height(), erase ); }

inline void QWidget::erase()
{ erase( 0, 0, crect.width(), crect.height() ); }

inline void QWidget::erase( const QRect &r )
{ erase( r.x(), r.y(), r.width(), r.height() ); }

inline bool QWidget::close()
{ return close( FALSE ); }

inline bool QWidget::isVisible() const
{ return testWState(WState_Visible); }

inline bool QWidget::isVisibleToTLW() const // obsolete
{ return isVisible(); }

inline bool QWidget::isHidden() const
{ return testWState(WState_ForceHide); }

inline bool QWidget::isShown() const
{ return !testWState(WState_ForceHide); }

inline void QWidget::move( const QPoint &p )
{ move( p.x(), p.y() ); }

inline void QWidget::resize( const QSize &s )
{ resize( s.width(), s.height()); }

inline void QWidget::setGeometry( const QRect &r )
{ setGeometry( r.left(), r.top(), r.width(), r.height() ); }

inline void QWidget::drawText( const QPoint &p, const QString &s )
{ drawText( p.x(), p.y(), s ); }

inline QWidget *QWidget::parentWidget( bool sameWindow ) const
{
    if ( sameWindow )
        return isTopLevel() ? 0 : (QWidget *)QObject::parent();
    return (QWidget *)QObject::parent();
}

inline QWidgetMapper *QWidget::wmapper()
{ return mapper; }

inline uint QWidget::getWState() const
{ return widget_state; }

inline void QWidget::setWState( uint f )
{ widget_state |= f; }

inline void QWidget::clearWState( uint f )
{ widget_state &= ~f; }

inline Qt::WFlags QWidget::getWFlags() const
{ return widget_flags; }

inline void QWidget::setWFlags( WFlags f )
{ widget_flags |= f; }

inline void QWidget::clearWFlags( WFlags f )
{ widget_flags &= ~f; }

inline void QWidget::constPolish() const
{
    if ( !testWState(WState_Polished) ) {
        QWidget* that = (QWidget*) this;
        that->polish();
        that->setWState(WState_Polished); // be on the safe side...
    }
}
#ifndef QT_NO_CURSOR
inline bool QWidget::ownCursor() const
{
    return testWState( WState_OwnCursor );
}
#endif
inline bool QWidget::ownFont() const
{
    return own_font;
}
#ifndef QT_NO_PALETTE
inline bool QWidget::ownPalette() const
{
    return own_palette;
}
#endif

inline void QWidget::setSizePolicy( QSizePolicy::SizeType hor, QSizePolicy::SizeType ver, bool hfw )
{
    setSizePolicy( QSizePolicy( hor, ver, hfw) );
}

inline bool QWidget::isInputMethodEnabled() const
{
    return (bool)im_enabled;
}

// Extra QWidget data
//  - to minimize memory usage for members that are seldom used.
//  - top-level widgets have extra extra data to reduce cost further

class QFocusData;
class QWSManager;
#if defined(Q_WS_WIN)
class QOleDropTarget;
#endif
#if defined(Q_WS_MAC)
class QMacDndExtra;
#endif

struct Q_EXPORT QTLWExtra {
#ifndef QT_NO_WIDGET_TOPEXTRA
    QString  caption;                           // widget caption
    QString  iconText;                          // widget icon text
    QPixmap *icon;                              // widget icon
#endif
    QFocusData *focusData;                      // focus data (for TLW)
    short    incw, inch;                        // size increments
    // frame strut
    ulong    fleft, fright, ftop, fbottom;
    uint     unused : 8;                       // not used at this point...
#if defined( Q_WS_WIN ) || defined( Q_WS_MAC )
    uint     opacity : 8;                      // Stores opacity level on Windows/Mac OS X.
#endif
    uint     savedFlags;                        // Save widgetflags while showing fullscreen
    short    basew, baseh;                      // base sizes
#if defined(Q_WS_X11)
    WId  parentWinId;                           // parent window Id (valid after reparenting)
    uint     embedded : 1;                      // window is embedded in another Qt application
    uint     spont_unmapped: 1;                 // window was spontaneously unmapped
    uint     reserved: 1;                       // reserved
    uint     dnd : 1;                           // DND properties installed
    uint     uspos : 1;                         // User defined position
    uint     ussize : 1;                        // User defined size
    void    *xic;                               // XIM Input Context
#endif
#if defined(Q_WS_MAC)
    WindowGroupRef group;
    uint     is_moved: 1;
    uint     resizer : 4;
#endif
#if defined(Q_WS_QWS) && !defined ( QT_NO_QWS_MANAGER )
    QRegion decor_allocated_region;             // decoration allocated region
    QWSManager *qwsManager;
#endif
#if defined(Q_WS_WIN)
    HICON    winIcon;                           // internal Windows icon
#endif
    QRect    normalGeometry;                    // used by showMin/maximized/FullScreen
#ifdef Q_WS_WIN
    uint style, exstyle;
#endif
};


#define QWIDGETSIZE_MAX 32767

// dear user: you can see this struct, but it is internal. do not touch.

struct Q_EXPORT QWExtra {
    Q_INT16  minw, minh;                        // minimum size
    Q_INT16  maxw, maxh;                        // maximum size
    QPixmap *bg_pix;                            // background pixmap
    QWidget *focus_proxy;
#ifndef QT_NO_CURSOR
    QCursor *curs;
#endif
    QTLWExtra *topextra;                        // only useful for TLWs
#if defined(Q_WS_WIN)
    QOleDropTarget *dropTarget;                 // drop target
#endif
#if defined(Q_WS_X11)
    WId xDndProxy;                              // XDND forwarding to embedded windows
#endif
#if defined(Q_WS_MAC)
    QRegion clip_saved, clip_sibs, clip_children;
    QMacDndExtra *macDndExtra;
    QRegion dirty_area;
    uint clip_dirty : 1, clip_serial : 15;
    uint child_dirty : 1, child_serial : 15;
#ifndef QMAC_NO_QUARTZ
    uint ctx_children_clipped:1;
#endif // QMAC_NO_QUARTZ
    uint has_dirty_area:1;
#endif // Q_WS_MAC
    uint bg_origin : 2;
#if defined(Q_WS_X11)
    uint children_use_dnd : 1;
    uint compress_events : 1;
#endif
#if defined(Q_WS_QWS) || defined(Q_WS_MAC)
    QRegion mask;                               // widget mask
#endif
    char     bg_mode;                           // background mode
    char     bg_mode_visual;                    // visual background mode
#ifndef QT_NO_STYLE
    QStyle* style;
#endif
    QRect micro_focus_hint;                     // micro focus hint
    QSizePolicy size_policy;
};

#define Q_DEFINED_QWIDGET
#include "qwinexport.h"

#endif // QWIDGET_H