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+/****************************************************************************
+**
+** Implementation of QColorGroup and QPalette classes
+**
+** Created : 950323
+**
+** Copyright (C) 1992-2008 Trolltech ASA.  All rights reserved.
+**
+** This file is part of the kernel module of the Qt GUI Toolkit.
+**
+** This file may be used under the terms of the GNU General
+** Public License versions 2.0 or 3.0 as published by the Free
+** Software Foundation and appearing in the files LICENSE.GPL2
+** and LICENSE.GPL3 included in the packaging of this file.
+** Alternatively you may (at your option) use any later version
+** of the GNU General Public License if such license has been
+** publicly approved by Trolltech ASA (or its successors, if any)
+** and the KDE Free Qt Foundation.
+**
+** Please review the following information to ensure GNU General
+** Public Licensing requirements will be met:
+** http://trolltech.com/products/qt/licenses/licensing/opensource/.
+** If you are unsure which license is appropriate for your use, please
+** review the following information:
+** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
+** or contact the sales department at sales@trolltech.com.
+**
+** This file may be used under the terms of the Q Public License as
+** defined by Trolltech ASA and appearing in the file LICENSE.QPL
+** included in the packaging of this file.  Licensees holding valid Qt
+** Commercial 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 WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
+** herein.
+**
+**********************************************************************/
+
+#include "qpalette.h"
+
+#ifndef QT_NO_PALETTE
+#include "qdatastream.h"
+#include "qcleanuphandler.h"
+
+/*****************************************************************************
+  QColorGroup member functions
+ *****************************************************************************/
+
+/*!
+    \class QColorGroup qpalette.h
+    \brief The QColorGroup class contains a group of widget colors.
+
+    \ingroup appearance
+    \ingroup graphics
+    \ingroup images
+
+    A color group contains a group of colors used by widgets for
+    drawing themselves. We recommend that widgets use color group
+    roles such as "foreground" and "base" rather than literal colors
+    like "red" or "turquoise". The color roles are enumerated and
+    defined in the \l ColorRole documentation.
+
+    The most common use of QColorGroup is like this:
+
+    \code
+	QPainter p;
+	...
+	p.setPen( colorGroup().foreground() );
+	p.drawLine( ... )
+    \endcode
+
+    It is also possible to modify color groups or create new color
+    groups from scratch.
+
+    The color group class can be created using three different
+    constructors or by modifying one supplied by Qt. The default
+    constructor creates an all-black color group, which can then be
+    modified using set functions; there's also a constructor for
+    specifying all the color group colors. And there is also a copy
+    constructor.
+
+    We strongly recommend using a system-supplied color group and
+    modifying that as necessary.
+
+    You modify a color group by calling the access functions
+    setColor() and setBrush(), depending on whether you want a pure
+    color or a pixmap pattern.
+
+    There are also corresponding color() and brush() getters, and a
+    commonly used convenience function to get each ColorRole:
+    background(), foreground(), base(), etc.
+
+    \sa QColor QPalette QWidget::colorGroup()
+*/
+
+
+/*!
+    \enum QColorGroup::ColorRole
+
+    The ColorRole enum defines the different symbolic color roles used
+    in current GUIs.
+
+    The central roles are:
+
+    \value Background  general background color.
+
+    \value Foreground  general foreground color.
+
+    \value Base  used as background color for text entry widgets, for example;
+    usually white or another light color.
+
+    \value Text  the foreground color used with \c Base. Usually this
+    is the same as the \c Foreground, in which case it must provide good
+    contrast with \c Background and \c Base.
+
+    \value Button  general button background color in which buttons need a
+    background different from \c Background, as in the Macintosh style.
+
+    \value ButtonText  a foreground color used with the \c Button color.
+
+    There are some color roles used mostly for 3D bevel and shadow
+    effects:
+
+    \value Light  lighter than \c Button color.
+
+    \value Midlight  between \c Button and \c Light.
+
+    \value Dark  darker than \c Button.
+
+    \value Mid  between \c Button and \c Dark.
+
+    \value Shadow  a very dark color.
+    By default, the shadow color is \c Qt::black.
+
+    All of these are normally derived from \c Background and used in
+    ways that depend on that relationship. For example, buttons depend
+    on it to make the bevels look attractive, and Motif scroll bars
+    depend on \c Mid to be slightly different from \c Background.
+
+    Selected (marked) items have two roles:
+
+    \value Highlight   a color to indicate a selected item or the
+    current item. By default, the highlight color is \c Qt::darkBlue.
+
+    \value HighlightedText  a text color that contrasts with \c Highlight.
+    By default, the highlighted text color is \c Qt::white.
+
+    Finally, there is a special role for text that needs to be
+    drawn where \c Text or \c Foreground would give poor contrast,
+    such as on pressed push buttons:
+
+    \value BrightText a text color that is very different from \c
+    Foreground and contrasts well with e.g. \c Dark.
+
+    \value Link a text color used for unvisited hyperlinks.
+    By default, the link color is \c Qt::blue.
+
+    \value LinkVisited a text color used for already visited hyperlinks.
+    By default, the linkvisited color is \c Qt::magenta.
+
+    \value NColorRoles Internal.
+
+    Note that text colors can be used for things other than just
+    words; text colors are \e usually used for text, but it's quite
+    common to use the text color roles for lines, icons, etc.
+
+    This image shows most of the color roles in use:
+    \img palette.png Color Roles
+*/
+
+
+class QColorGroupPrivate : public QShared
+{
+public:
+    QBrush br[QColorGroup::NColorRoles];
+    QColorGroupPrivate* detach() {
+	if ( count > 1 ) {
+	    deref();
+	    QColorGroupPrivate* d = new QColorGroupPrivate;
+	    for (int i=0; i<QColorGroup::NColorRoles; i++)
+		d->br[i] = br[i];
+	    return d;
+	}
+	return this;
+    }
+};
+
+/*!
+    Constructs a color group with all colors set to black.
+*/
+
+QColorGroup::QColorGroup()
+{
+    static QColorGroupPrivate* defColorGroupData = 0;
+    if ( !defColorGroupData ) {
+	static QSharedCleanupHandler<QColorGroupPrivate> defColorGroupCleanup;
+	defColorGroupData = new QColorGroupPrivate;
+	defColorGroupCleanup.set( &defColorGroupData );
+    }
+    d = defColorGroupData;
+    br = d->br;
+    d->ref();
+}
+
+/*!
+    Constructs a color group that is an independent copy of \a other.
+*/
+QColorGroup::QColorGroup( const QColorGroup& other )
+{
+    d = other.d;
+    d->ref();
+    br = d->br;
+}
+
+/*!
+    Copies the colors of \a other to this color group.
+*/
+QColorGroup& QColorGroup::operator =(const QColorGroup& other)
+{
+    if ( d != other.d ) {
+	if ( d->deref() )
+	    delete d;
+	d = other.d;
+	br = d->br;
+	d->ref();
+    }
+    return *this;
+}
+
+static QColor qt_mix_colors( QColor a, QColor b)
+{
+    return QColor( (a.red() + b.red()) / 2, (a.green() + b.green()) / 2, (a.blue() + b.blue()) / 2 );
+}
+
+
+/*!
+    Constructs a color group. You can pass either brushes, pixmaps or
+    plain colors for \a foreground, \a button, \a light, \a dark, \a
+    mid, \a text, \a bright_text, \a base and \a background.
+
+    \sa QBrush
+*/
+ QColorGroup::QColorGroup( const QBrush &foreground, const QBrush &button,
+			   const QBrush &light, const QBrush &dark,
+			   const QBrush &mid, const QBrush &text,
+			   const QBrush &bright_text, const QBrush &base,
+			   const QBrush &background)
+{
+    d = new QColorGroupPrivate;
+    br = d->br;
+    br[Foreground]      = foreground;
+    br[Button]		= button;
+    br[Light]		= light;
+    br[Dark]		= dark;
+    br[Mid]		= mid;
+    br[Text]		= text;
+    br[BrightText]	= bright_text;
+    br[ButtonText]	= text;
+    br[Base]		= base;
+    br[Background]	= background;
+    br[Midlight]	= qt_mix_colors( br[Button].color(), br[Light].color() );
+    br[Shadow]          = Qt::black;
+    br[Highlight]       = Qt::darkBlue;
+    br[HighlightedText] = Qt::white;
+    br[Link]            = Qt::blue;
+    br[LinkVisited]     = Qt::magenta;
+}
+
+
+/*!\obsolete
+
+  Constructs a color group with the specified colors. The button
+  color will be set to the background color.
+*/
+
+QColorGroup::QColorGroup( const QColor &foreground, const QColor &background,
+			  const QColor &light, const QColor &dark,
+			  const QColor &mid,
+			  const QColor &text, const QColor &base )
+{
+    d = new QColorGroupPrivate;
+    br = d->br;
+    br[Foreground]      = QBrush(foreground);
+    br[Button]          = QBrush(background);
+    br[Light]           = QBrush(light);
+    br[Dark]            = QBrush(dark);
+    br[Mid]             = QBrush(mid);
+    br[Text]            = QBrush(text);
+    br[BrightText]      = br[Light];
+    br[ButtonText]      = br[Text];
+    br[Base]            = QBrush(base);
+    br[Background]      = QBrush(background);
+    br[Midlight]	= qt_mix_colors( br[Button].color(), br[Light].color() );
+    br[Shadow]          = Qt::black;
+    br[Highlight]       = Qt::darkBlue;
+    br[HighlightedText] = Qt::white;
+    br[Link]            = Qt::blue;
+    br[LinkVisited]     = Qt::magenta;
+}
+
+/*!
+    Destroys the color group.
+*/
+
+QColorGroup::~QColorGroup()
+{
+    if ( d->deref() )
+	delete d;
+}
+
+/*!
+    Returns the color that has been set for color role \a r.
+
+    \sa brush() ColorRole
+ */
+const QColor &QColorGroup::color( ColorRole r ) const
+{
+    return br[r].color();
+}
+
+/*!
+    Returns the brush that has been set for color role \a r.
+
+    \sa color() setBrush() ColorRole
+*/
+const QBrush &QColorGroup::brush( ColorRole r ) const
+{
+    return br[r];
+}
+
+/*!
+    Sets the brush used for color role \a r to a solid color \a c.
+
+    \sa brush() setColor() ColorRole
+*/
+void QColorGroup::setColor( ColorRole r, const QColor &c )
+{
+    setBrush( r, QBrush(c) );
+}
+
+/*!
+    Sets the brush used for color role \a r to \a b.
+
+    \sa brush() setColor() ColorRole
+*/
+void QColorGroup::setBrush( ColorRole r, const QBrush &b )
+{
+    d = d->detach();
+    br = d->br;
+    br[r] = b;
+}
+
+
+/*!
+    \fn const QColor & QColorGroup::foreground() const
+
+    Returns the foreground color of the color group.
+
+    \sa ColorRole
+*/
+
+/*!
+    \fn const QColor & QColorGroup::button() const
+
+    Returns the button color of the color group.
+
+    \sa ColorRole
+*/
+
+/*!
+    \fn const QColor & QColorGroup::light() const
+
+    Returns the light color of the color group.
+
+    \sa ColorRole
+*/
+
+/*!
+    \fn const QColor& QColorGroup::midlight() const
+
+    Returns the midlight color of the color group.
+
+    \sa ColorRole
+*/
+
+/*!
+    \fn const QColor & QColorGroup::dark() const
+
+    Returns the dark color of the color group.
+
+    \sa ColorRole
+*/
+
+/*!
+    \fn const QColor & QColorGroup::mid() const
+
+    Returns the mid color of the color group.
+
+    \sa ColorRole
+*/
+
+/*!
+    \fn const QColor & QColorGroup::text() const
+
+    Returns the text foreground color of the color group.
+
+    \sa ColorRole
+*/
+
+/*!
+    \fn const QColor & QColorGroup::brightText() const
+
+    Returns the bright text foreground color of the color group.
+
+    \sa ColorRole
+*/
+
+/*!
+    \fn const QColor & QColorGroup::buttonText() const
+
+    Returns the button text foreground color of the color group.
+
+    \sa ColorRole
+*/
+
+/*!
+    \fn const QColor & QColorGroup::base() const
+
+    Returns the base color of the color group.
+
+    \sa ColorRole
+*/
+
+/*!
+    \fn const QColor & QColorGroup::background() const
+
+    Returns the background color of the color group.
+
+    \sa ColorRole
+*/
+
+/*!
+    \fn const QColor & QColorGroup::shadow() const
+
+    Returns the shadow color of the color group.
+
+    \sa ColorRole
+*/
+
+/*!
+    \fn const QColor & QColorGroup::highlight() const
+
+    Returns the highlight color of the color group.
+
+    \sa ColorRole
+*/
+
+/*!
+    \fn const QColor & QColorGroup::highlightedText() const
+
+    Returns the highlighted text color of the color group.
+
+    \sa ColorRole
+*/
+
+/*!
+    \fn const QColor & QColorGroup::link() const
+
+    Returns the unvisited link text color of the color group.
+
+    \sa ColorRole
+*/
+
+/*!
+    \fn const QColor & QColorGroup::linkVisited() const
+
+    Returns the visited link text color of the color group.
+
+    \sa ColorRole
+*/
+
+/*!
+    \fn bool QColorGroup::operator!=( const QColorGroup &g ) const
+
+    Returns TRUE if this color group is different from \a g; otherwise
+    returns  FALSE.
+
+    \sa operator!=()
+*/
+
+/*!
+    Returns TRUE if this color group is equal to \a g; otherwise
+    returns FALSE.
+
+    \sa operator==()
+*/
+
+bool QColorGroup::operator==( const QColorGroup &g ) const
+{
+    if ( d == g.d )
+	return TRUE;
+    for( int r = 0 ; r < NColorRoles ; r++ )
+	if ( br[r] != g.br[r] )
+	    return FALSE;
+    return TRUE;
+}
+
+
+/*****************************************************************************
+  QPalette member functions
+ *****************************************************************************/
+
+/*!
+    \class QPalette qpalette.h
+
+    \brief The QPalette class contains color groups for each widget state.
+
+    \ingroup appearance
+    \ingroup shared
+    \ingroup graphics
+    \ingroup images
+    \mainclass
+
+    A palette consists of three color groups: \e active, \e disabled,
+    and \e inactive. All widgets contain a palette, and all widgets in
+    Qt use their palette to draw themselves. This makes the user
+    interface easily configurable and easier to keep consistent.
+
+    If you create a new widget we strongly recommend that you use the
+    colors in the palette rather than hard-coding specific colors.
+
+    The color groups:
+    \list
+    \i The active() group is used for the window that has keyboard focus.
+    \i The inactive() group is used for other windows.
+    \i The disabled() group is used for widgets (not windows) that are
+    disabled for some reason.
+    \endlist
+
+    Both active and inactive windows can contain disabled widgets.
+    (Disabled widgets are often called \e inaccessible or \e{grayed
+    out}.)
+
+    In Motif style, active() and inactive() look the same. In Windows
+    2000 style and Macintosh Platinum style, the two styles look
+    slightly different.
+
+    There are setActive(), setInactive(), and setDisabled() functions
+    to modify the palette. (Qt also supports a normal() group; this is
+    an obsolete alias for active(), supported for backwards
+    compatibility.)
+
+    Colors and brushes can be set for particular roles in any of a
+    palette's color groups with setColor() and setBrush().
+
+    You can copy a palette using the copy constructor and test to see
+    if two palettes are \e identical using isCopyOf().
+
+    \sa QApplication::setPalette(), QWidget::setPalette(), QColorGroup, QColor
+*/
+
+/*!
+    \enum QPalette::ColorGroup
+
+    \value Disabled
+    \value Active
+    \value Inactive
+    \value NColorGroups
+    \value Normal synonym for Active
+*/
+
+/*!
+    \obsolete
+
+    \fn const QColorGroup &QPalette::normal() const
+
+    Returns the active color group. Use active() instead.
+
+    \sa setActive() active()
+*/
+
+/*!
+    \obsolete
+
+    \fn void QPalette::setNormal( const QColorGroup & cg )
+
+    Sets the active color group to \a cg. Use setActive() instead.
+
+    \sa setActive() active()
+*/
+
+
+static int palette_count = 1;
+
+/*!
+    Constructs a palette that consists of color groups with only black
+    colors.
+*/
+
+QPalette::QPalette()
+{
+    static QPalData *defPalData = 0;
+    if ( !defPalData ) {                // create common palette data
+	defPalData = new QPalData;      //   for the default palette
+	static QSharedCleanupHandler<QPalData> defPalCleanup;
+	defPalCleanup.set( &defPalData );
+	defPalData->ser_no = palette_count++;
+    }
+    data = defPalData;
+    data->ref();
+}
+
+/*!\obsolete
+  Constructs a palette from the \a button color. The other colors are
+  automatically calculated, based on this color. Background will be
+  the button color as well.
+*/
+
+QPalette::QPalette( const QColor &button )
+{
+    data = new QPalData;
+    Q_CHECK_PTR( data );
+    data->ser_no = palette_count++;
+    QColor bg = button, btn = button, fg, base, disfg;
+    int h, s, v;
+    bg.hsv( &h, &s, &v );
+    if ( v > 128 ) {				// light background
+	fg   = Qt::black;
+	base = Qt::white;
+	disfg = Qt::darkGray;
+    } else {					// dark background
+	fg   = Qt::white;
+	base = Qt::black;
+	disfg = Qt::darkGray;
+    }
+    data->active   = QColorGroup( fg, btn, btn.light(150), btn.dark(),
+				  btn.dark(150), fg, Qt::white, base, bg );
+    data->disabled = QColorGroup( disfg, btn, btn.light(150), btn.dark(),
+				  btn.dark(150), disfg, Qt::white, base, bg );
+    data->inactive = data->active;
+}
+
+/*!
+    Constructs a palette from a \a button color and a \a background.
+    The other colors are automatically calculated, based on these
+    colors.
+*/
+
+QPalette::QPalette( const QColor &button, const QColor &background )
+{
+    data = new QPalData;
+    Q_CHECK_PTR( data );
+    data->ser_no = palette_count++;
+    QColor bg = background, btn = button, fg, base, disfg;
+    int h, s, v;
+    bg.hsv( &h, &s, &v );
+    if ( v > 128 ) {				// light background
+	fg   = Qt::black;
+	base = Qt::white;
+	disfg = Qt::darkGray;
+    } else {					// dark background
+	fg   = Qt::white;
+	base = Qt::black;
+	disfg = Qt::darkGray;
+    }
+    data->active   = QColorGroup( fg, btn, btn.light(150), btn.dark(),
+				  btn.dark(150), fg, Qt::white, base, bg );
+    data->disabled = QColorGroup( disfg, btn, btn.light(150), btn.dark(),
+				  btn.dark(150), disfg, Qt::white, base, bg );
+    data->inactive = data->active;
+}
+
+/*!
+    Constructs a palette that consists of the three color groups \a
+    active, \a disabled and \a inactive. See the \link #details
+    Detailed Description\endlink for definitions of the color groups
+    and \l QColorGroup::ColorRole for definitions of each color role
+    in the three groups.
+
+    \sa QColorGroup QColorGroup::ColorRole QPalette
+*/
+
+QPalette::QPalette( const QColorGroup &active, const QColorGroup &disabled,
+		    const QColorGroup &inactive )
+{
+    data = new QPalData;
+    Q_CHECK_PTR( data );
+    data->ser_no = palette_count++;
+    data->active = active;
+    data->disabled = disabled;
+    data->inactive = inactive;
+}
+
+/*!
+    Constructs a copy of \a p.
+
+    This constructor is fast (it uses copy-on-write).
+*/
+
+QPalette::QPalette( const QPalette &p )
+{
+    data = p.data;
+    data->ref();
+}
+
+/*!
+    Destroys the palette.
+*/
+
+QPalette::~QPalette()
+{
+    if ( data->deref() )
+	delete data;
+}
+
+/*!
+    Assigns \a p to this palette and returns a reference to this
+    palette.
+
+    This is fast (it uses copy-on-write).
+
+    \sa copy()
+*/
+
+QPalette &QPalette::operator=( const QPalette &p )
+{
+    p.data->ref();
+    if ( data->deref() )
+	delete data;
+    data = p.data;
+    return *this;
+}
+
+
+/*!
+    Returns the color in color group \a gr, used for color role \a r.
+
+    \sa brush() setColor() QColorGroup::ColorRole
+*/
+const QColor &QPalette::color( ColorGroup gr, QColorGroup::ColorRole r ) const
+{
+    return directBrush( gr, r ).color();
+}
+
+/*!
+    Returns the brush in color group \a gr, used for color role \a r.
+
+    \sa color() setBrush() QColorGroup::ColorRole
+*/
+const QBrush &QPalette::brush( ColorGroup gr, QColorGroup::ColorRole r ) const
+{
+    return directBrush( gr, r );
+}
+
+/*!
+    Sets the brush in color group \a gr, used for color role \a r, to
+    the solid color \a c.
+
+    \sa setBrush() color() QColorGroup::ColorRole
+*/
+void QPalette::setColor( ColorGroup gr, QColorGroup::ColorRole r,
+			 const QColor &c)
+{
+    setBrush( gr, r, QBrush(c) );
+}
+
+/*!
+    Sets the brush in color group \a gr, used for color role \a r, to
+    \a b.
+
+    \sa brush() setColor() QColorGroup::ColorRole
+*/
+void QPalette::setBrush( ColorGroup gr, QColorGroup::ColorRole r,
+			 const QBrush &b)
+{
+    detach();
+    data->ser_no = palette_count++;
+    directSetBrush( gr, r, b);
+}
+
+/*!
+    \overload
+
+    Sets the brush color used for color role \a r to color \a c in all
+    three color groups.
+
+    \sa color() setBrush() QColorGroup::ColorRole
+*/
+void QPalette::setColor( QColorGroup::ColorRole r, const QColor &c )
+{
+    setBrush( r, QBrush(c) );
+}
+
+/*!
+    \overload
+
+    Sets the brush in for color role \a r in all three color groups to
+    \a b.
+
+    \sa brush() setColor() QColorGroup::ColorRole active() inactive() disabled()
+*/
+void QPalette::setBrush( QColorGroup::ColorRole r, const QBrush &b )
+{
+    detach();
+    data->ser_no = palette_count++;
+    directSetBrush( Active, r, b );
+    directSetBrush( Disabled, r, b );
+    directSetBrush( Inactive, r, b );
+}
+
+
+/*!
+    Returns a deep copy of this palette.
+
+    \warning This is slower than the copy constructor and assignment
+    operator and offers no benefits.
+*/
+
+QPalette QPalette::copy() const
+{
+    QPalette p( data->active, data->disabled, data->inactive );
+    return p;
+}
+
+
+/*!
+    Detaches this palette from any other QPalette objects with which
+    it might implicitly share QColorGroup objects. In essence, does
+    the copying part of copy-on-write.
+
+    Calling this should generally not be necessary; QPalette calls it
+    itself when necessary.
+*/
+
+void QPalette::detach()
+{
+    if ( data->count != 1 )
+	*this = copy();
+}
+
+/*!
+    \fn const QColorGroup & QPalette::disabled() const
+
+    Returns the disabled color group of this palette.
+
+    \sa QColorGroup, setDisabled(), active(), inactive()
+*/
+
+/*!
+    Sets the \c Disabled color group to \a g.
+
+    \sa disabled() setActive() setInactive()
+*/
+
+void QPalette::setDisabled( const QColorGroup &g )
+{
+    detach();
+    data->ser_no = palette_count++;
+    data->disabled = g;
+}
+
+/*!
+    \fn const QColorGroup & QPalette::active() const
+
+    Returns the active color group of this palette.
+
+    \sa QColorGroup, setActive(), inactive(), disabled()
+*/
+
+/*!
+    Sets the \c Active color group to \a g.
+
+    \sa active() setDisabled() setInactive() QColorGroup
+*/
+
+void QPalette::setActive( const QColorGroup &g )
+{
+    detach();
+    data->ser_no = palette_count++;
+    data->active = g;
+}
+
+/*!
+    \fn const QColorGroup & QPalette::inactive() const
+
+    Returns the inactive color group of this palette.
+
+    \sa QColorGroup,  setInactive(), active(), disabled()
+*/
+
+/*!
+    Sets the \c Inactive color group to \a g.
+
+    \sa active() setDisabled() setActive() QColorGroup
+*/
+
+void QPalette::setInactive( const QColorGroup &g )
+{
+    detach();
+    data->ser_no = palette_count++;
+    data->inactive = g;
+}
+
+
+/*!
+    \fn bool QPalette::operator!=( const QPalette &p ) const
+
+    Returns TRUE (slowly) if this palette is different from \a p;
+    otherwise returns FALSE (usually quickly).
+*/
+
+/*!
+    Returns TRUE (usually quickly) if this palette is equal to \a p;
+    otherwise returns FALSE (slowly).
+*/
+
+bool QPalette::operator==( const QPalette &p ) const
+{
+    return data->active == p.data->active &&
+	   data->disabled == p.data->disabled &&
+	   data->inactive == p.data->inactive;
+}
+
+
+/*!
+    \fn int QPalette::serialNumber() const
+
+    Returns a number that uniquely identifies this QPalette object.
+    The serial number is intended for caching. Its value may not be
+    used for anything other than equality testing.
+
+    Note that QPalette uses copy-on-write, and the serial number
+    changes during the lazy copy operation (detach()), not during a
+    shallow copy (copy constructor or assignment).
+
+    \sa QPixmap QPixmapCache QCache
+*/
+
+
+/*****************************************************************************
+  QColorGroup/QPalette stream functions
+ *****************************************************************************/
+
+#ifndef QT_NO_DATASTREAM
+/*!
+    \relates QColorGroup
+
+    Writes color group, \a g to the stream \a s.
+
+    \sa \link datastreamformat.html Format of the QDataStream operators \endlink
+*/
+
+QDataStream &operator<<( QDataStream &s, const QColorGroup &g )
+{
+    if ( s.version() == 1 ) {
+	// Qt 1.x
+	s << g.foreground()
+	  << g.background()
+	  << g.light()
+	  << g.dark()
+	  << g.mid()
+	  << g.text()
+	  << g.base();
+    } else {
+	int max = QColorGroup::NColorRoles;
+	if ( s.version() <= 3) // Qt 2.x
+	    max = 14;
+
+	for( int r = 0 ; r < max ; r++ )
+	    s << g.brush( (QColorGroup::ColorRole)r);
+    }
+    return s;
+}
+
+/*!
+    \related QColorGroup
+
+    Reads a color group from the stream.
+
+    \sa \link datastreamformat.html Format of the QDataStream operators \endlink
+*/
+
+QDataStream &operator>>( QDataStream &s, QColorGroup &g )
+{
+    if ( s.version() == 1 ) {
+	// Qt 1.x
+	QColor fg, bg, light, dark, mid, text, base;
+	s >> fg >> bg >> light >> dark >> mid >> text >> base;
+	QPalette p( bg );
+	QColorGroup n( p.active() );
+	n.setColor( QColorGroup::Foreground, fg );
+	n.setColor( QColorGroup::Light, light );
+	n.setColor( QColorGroup::Dark, dark );
+	n.setColor( QColorGroup::Mid, mid );
+	n.setColor( QColorGroup::Text, text );
+	n.setColor( QColorGroup::Base, base );
+	g = n;
+    } else {
+	int max = QColorGroup::NColorRoles;
+	if (s.version() <= 3) // Qt 2.x
+	    max = 14;
+
+	QBrush tmp;
+	for( int r = 0 ; r < max; r++ ) {
+	    s >> tmp;
+	    g.setBrush( (QColorGroup::ColorRole)r, tmp);
+	}
+    }
+    return s;
+}
+
+
+/*!
+    \relates QPalette
+
+    Writes the palette, \a p to the stream \a s and returns a
+    reference to the stream.
+
+    \sa \link datastreamformat.html Format of the QDataStream operators \endlink
+*/
+
+QDataStream &operator<<( QDataStream &s, const QPalette &p )
+{
+    return s << p.active()
+	     << p.disabled()
+	     << p.inactive();
+}
+
+
+static void readV1ColorGroup( QDataStream &s, QColorGroup &g,
+		       QPalette::ColorGroup r )
+{
+    QColor fg, bg, light, dark, mid, text, base;
+    s >> fg >> bg >> light >> dark >> mid >> text >> base;
+    QPalette p( bg );
+    QColorGroup n;
+    switch ( r ) {
+	case QPalette::Disabled:
+	    n = p.disabled();
+	    break;
+	case QPalette::Inactive:
+	    n = p.inactive();
+	    break;
+	default:
+	    n = p.active();
+	    break;
+    }
+    n.setColor( QColorGroup::Foreground, fg );
+    n.setColor( QColorGroup::Light, light );
+    n.setColor( QColorGroup::Dark, dark );
+    n.setColor( QColorGroup::Mid, mid );
+    n.setColor( QColorGroup::Text, text );
+    n.setColor( QColorGroup::Base, base );
+    g = n;
+}
+
+
+/*!
+    \relates QPalette
+
+    Reads a palette from the stream, \a s into the palette \a p, and
+    returns a reference to the stream.
+
+    \sa \link datastreamformat.html Format of the QDataStream operators \endlink
+*/
+
+QDataStream &operator>>( QDataStream &s, QPalette &p )
+{
+    QColorGroup active, disabled, inactive;
+    if ( s.version() == 1 ) {
+	readV1ColorGroup( s, active, QPalette::Active );
+	readV1ColorGroup( s, disabled, QPalette::Disabled );
+	readV1ColorGroup( s, inactive, QPalette::Inactive );
+    } else {
+	s >> active >> disabled >> inactive;
+    }
+    QPalette newpal( active, disabled, inactive );
+    p = newpal;
+    return s;
+}
+#endif //QT_NO_DATASTREAM
+
+/*!
+    Returns TRUE if this palette and \a p are copies of each other,
+    i.e. one of them was created as a copy of the other and neither
+    was subsequently modified; otherwise returns FALSE. This is much
+    stricter than equality.
+
+    \sa operator=() operator==()
+*/
+
+bool QPalette::isCopyOf( const QPalette & p )
+{
+    return data && data == p.data;
+}
+
+const QBrush &QPalette::directBrush( ColorGroup gr, QColorGroup::ColorRole r ) const
+{
+    if ( (uint)gr > (uint)QPalette::NColorGroups ) {
+#if defined(QT_CHECK_RANGE)
+	qWarning( "QPalette::directBrush: colorGroup(%i) out of range", gr );
+#endif
+	return data->active.br[QColorGroup::Foreground];
+    }
+    if ( (uint)r >= (uint)QColorGroup::NColorRoles ) {
+#if defined(QT_CHECK_RANGE)
+	qWarning( "QPalette::directBrush: colorRole(%i) out of range", r );
+#endif
+	return data->active.br[QColorGroup::Foreground];
+    }
+    switch( gr ) {
+    case Active:
+	return data->active.br[r];
+	//break;
+    case Disabled:
+	return data->disabled.br[r];
+	//break;
+    case Inactive:
+	return data->inactive.br[r];
+	//break;
+    default:
+	break;
+    }
+#if defined(QT_CHECK_RANGE)
+    qWarning( "QPalette::directBrush: colorGroup(%i) internal error", gr );
+#endif
+    return data->active.br[QColorGroup::Foreground]; // Satisfy compiler
+}
+
+void QPalette::directSetBrush( ColorGroup gr, QColorGroup::ColorRole r, const QBrush& b)
+{
+    if ( (uint)gr > (uint)QPalette::NColorGroups ) {
+#if defined(QT_CHECK_RANGE)
+	qWarning( "QPalette::directBrush: colorGroup(%i) out of range", gr );
+#endif
+	return;
+    }
+    if ( (uint)r >= (uint)QColorGroup::NColorRoles ) {
+#if defined(QT_CHECK_RANGE)
+	qWarning( "QPalette::directBrush: colorRole(%i) out of range", r );
+#endif
+	return;
+    }
+    switch( gr ) {
+    case Active:
+	data->active.setBrush(r,b);
+	break;
+    case Disabled:
+	data->disabled.setBrush(r,b);
+	break;
+    case Inactive:
+	data->inactive.setBrush(r,b);
+	break;
+    default:
+#if defined(QT_CHECK_RANGE)
+	qWarning( "QPalette::directBrush: colorGroup(%i) internal error", gr );
+#endif
+	break;
+    }
+}
+
+
+/*!\internal*/
+QColorGroup::ColorRole QPalette::foregroundRoleFromMode( Qt::BackgroundMode mode )
+{
+    switch (mode) {
+    case Qt::PaletteButton:
+	return QColorGroup::ButtonText;
+    case Qt::PaletteBase:
+	return QColorGroup::Text;
+    case Qt::PaletteDark:
+    case Qt::PaletteShadow:
+	return QColorGroup::Light;
+    case Qt::PaletteHighlight:
+	return QColorGroup::HighlightedText;
+    case Qt::PaletteBackground:
+    default:
+	return QColorGroup::Foreground;
+    }
+}
+
+/*!\internal*/
+QColorGroup::ColorRole QPalette::backgroundRoleFromMode( Qt::BackgroundMode mode)
+{
+    switch (mode) {
+    case Qt::PaletteForeground:
+	return QColorGroup::Foreground;
+    case Qt::PaletteButton:
+	return QColorGroup::Button;
+    case Qt::PaletteLight:
+	return QColorGroup::Light;
+    case Qt::PaletteMidlight:
+	return QColorGroup::Midlight;
+    case Qt::PaletteDark:
+	return QColorGroup::Dark;
+    case Qt::PaletteMid:
+	return QColorGroup::Mid;
+    case Qt::PaletteText:
+	return QColorGroup::Text;
+    case Qt::PaletteBrightText:
+	return QColorGroup::BrightText;
+    case Qt::PaletteButtonText:
+	return QColorGroup::ButtonText;
+    case Qt::PaletteBase:
+	return QColorGroup::Base;
+    case Qt::PaletteShadow:
+	return QColorGroup::Shadow;
+    case Qt::PaletteHighlight:
+	return QColorGroup::Highlight;
+    case Qt::PaletteHighlightedText:
+	return QColorGroup::HighlightedText;
+    case Qt::PaletteLink:
+	return QColorGroup::Link;
+    case Qt::PaletteLinkVisited:
+	return QColorGroup::LinkVisited;
+    case Qt::PaletteBackground:
+    default:
+	return QColorGroup::Background;
+    }
+}
+
+#endif // QT_NO_PALETTE