Add Qt3 development HEAD version

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diff --git a/src/kernel/qsize.cpp b/src/kernel/qsize.cpp
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+/****************************************************************************
+**
+** Implementation of QSize class
+**
+** Created : 931028
+**
+** 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 "qsize.h"
+#include "qdatastream.h"
+
+
+/*!
+  \class QSize
+  \brief The QSize class defines the size of a two-dimensional object.
+
+  \ingroup images
+  \ingroup graphics
+
+  A size is specified by a width and a height.
+
+  The coordinate type is QCOORD (defined in \c <qwindowdefs.h> as \c int).
+  The minimum value of QCOORD is QCOORD_MIN (-2147483648) and the maximum
+  value is QCOORD_MAX (2147483647).
+
+  The size can be set in the constructor and changed with setWidth()
+  and setHeight(), or using operator+=(), operator-=(), operator*=()
+  and operator/=(), etc. You can swap the width and height with
+  transpose(). You can get a size which holds the maximum height and
+  width of two sizes using expandedTo(), and the minimum height and
+  width of two sizes using boundedTo().
+
+
+  \sa QPoint, QRect
+*/
+
+
+/*****************************************************************************
+  QSize member functions
+ *****************************************************************************/
+
+/*!
+  \fn QSize::QSize()
+  Constructs a size with invalid (negative) width and height.
+*/
+
+/*!
+  \fn QSize::QSize( int w, int h )
+  Constructs a size with width \a w and height \a h.
+*/
+
+/*!
+  \fn bool QSize::isNull() const
+  Returns TRUE if the width is 0 and the height is 0; otherwise
+  returns FALSE.
+*/
+
+/*!
+  \fn bool QSize::isEmpty() const
+  Returns TRUE if the width is less than or equal to 0, or the height is
+  less than or equal to 0; otherwise returns FALSE.
+*/
+
+/*!
+  \fn bool QSize::isValid() const
+  Returns TRUE if the width is equal to or greater than 0 and the height is
+  equal to or greater than 0; otherwise returns FALSE.
+*/
+
+/*!
+  \fn int QSize::width() const
+  Returns the width.
+  \sa height()
+*/
+
+/*!
+  \fn int QSize::height() const
+  Returns the height.
+  \sa width()
+*/
+
+/*!
+  \fn void QSize::setWidth( int w )
+  Sets the width to \a w.
+  \sa width(), setHeight()
+*/
+
+/*!
+  \fn void QSize::setHeight( int h )
+  Sets the height to \a h.
+  \sa height(), setWidth()
+*/
+
+/*!
+  Swaps the values of width and height.
+*/
+
+void QSize::transpose()
+{
+    QCOORD tmp = wd;
+    wd = ht;
+    ht = tmp;
+}
+
+/*! \enum QSize::ScaleMode
+
+    This enum type defines the different ways of scaling a size.
+
+    \img scaling.png
+
+    \value ScaleFree  The size is scaled freely. The ratio is not preserved.
+    \value ScaleMin  The size is scaled to a rectangle as large as possible
+                     inside a given rectangle, preserving the aspect ratio.
+    \value ScaleMax  The size is scaled to a rectangle as small as possible
+                     outside a given rectangle, preserving the aspect ratio.
+
+    \sa QSize::scale(), QImage::scale(), QImage::smoothScale()
+*/
+
+/*!
+    Scales the size to a rectangle of width \a w and height \a h according
+    to the ScaleMode \a mode.
+
+    \list
+    \i If \a mode is \c ScaleFree, the size is set to (\a w, \a h).
+    \i If \a mode is \c ScaleMin, the current size is scaled to a rectangle
+       as large as possible inside (\a w, \a h), preserving the aspect ratio.
+    \i If \a mode is \c ScaleMax, the current size is scaled to a rectangle
+       as small as possible outside (\a w, \a h), preserving the aspect ratio.
+    \endlist
+
+    Example:
+    \code
+    QSize t1( 10, 12 );
+    t1.scale( 60, 60, QSize::ScaleFree );
+    // t1 is (60, 60)
+
+    QSize t2( 10, 12 );
+    t2.scale( 60, 60, QSize::ScaleMin );
+    // t2 is (50, 60)
+
+    QSize t3( 10, 12 );
+    t3.scale( 60, 60, QSize::ScaleMax );
+    // t3 is (60, 72)
+    \endcode
+*/
+void QSize::scale( int w, int h, ScaleMode mode )
+{
+    if ( mode == ScaleFree ) {
+	wd = (QCOORD)w;
+	ht = (QCOORD)h;
+    } else {
+	bool useHeight = TRUE;
+	int w0 = width();
+	int h0 = height();
+	int rw = h * w0 / h0;
+
+	if ( mode == ScaleMin ) {
+	    useHeight = ( rw <= w );
+	} else { // mode == ScaleMax
+	    useHeight = ( rw >= w );
+	}
+
+	if ( useHeight ) {
+	    wd = (QCOORD)rw;
+	    ht = (QCOORD)h;
+	} else {
+	    wd = (QCOORD)w;
+	    ht = (QCOORD)( w * h0 / w0 );
+	}
+    }
+}
+
+/*!
+    \overload
+
+    Equivalent to scale(\a{s}.width(), \a{s}.height(), \a mode).
+*/
+void QSize::scale( const QSize &s, ScaleMode mode )
+{
+    scale( s.width(), s.height(), mode );
+}
+
+/*!
+  \fn QCOORD &QSize::rwidth()
+  Returns a reference to the width.
+
+  Using a reference makes it possible to directly manipulate the width.
+
+  Example:
+  \code
+    QSize s( 100, 10 );
+    s.rwidth() += 20;		// s becomes (120,10)
+  \endcode
+
+  \sa rheight()
+*/
+
+/*!
+  \fn QCOORD &QSize::rheight()
+  Returns a reference to the height.
+
+  Using a reference makes it possible to directly manipulate the height.
+
+  Example:
+  \code
+    QSize s( 100, 10 );
+    s.rheight() += 5;		// s becomes (100,15)
+  \endcode
+
+  \sa rwidth()
+*/
+
+/*!
+  \fn QSize &QSize::operator+=( const QSize &s )
+
+  Adds \a s to the size and returns a reference to this size.
+
+  Example:
+  \code
+    QSize s(  3, 7 );
+    QSize r( -1, 4 );
+    s += r;			// s becomes (2,11)
+\endcode
+*/
+
+/*!
+  \fn QSize &QSize::operator-=( const QSize &s )
+
+  Subtracts \a s from the size and returns a reference to this size.
+
+  Example:
+  \code
+    QSize s(  3, 7 );
+    QSize r( -1, 4 );
+    s -= r;			// s becomes (4,3)
+  \endcode
+*/
+
+/*!
+  \fn QSize &QSize::operator*=( int c )
+  Multiplies both the width and height by \a c and returns a reference to
+  the size.
+*/
+
+/*!
+  \overload QSize &QSize::operator*=( double c )
+
+  Multiplies both the width and height by \a c and returns a reference to
+  the size.
+
+  Note that the result is truncated.
+*/
+
+/*!
+  \fn bool operator==( const QSize &s1, const QSize &s2 )
+  \relates QSize
+  Returns TRUE if \a s1 and \a s2 are equal; otherwise returns FALSE.
+*/
+
+/*!
+  \fn bool operator!=( const QSize &s1, const QSize &s2 )
+  \relates QSize
+  Returns TRUE if \a s1 and \a s2 are different; otherwise returns FALSE.
+*/
+
+/*!
+  \fn const QSize operator+( const QSize &s1, const QSize &s2 )
+  \relates QSize
+  Returns the sum of \a s1 and \a s2; each component is added separately.
+*/
+
+/*!
+  \fn const QSize operator-( const QSize &s1, const QSize &s2 )
+  \relates QSize
+  Returns \a s2 subtracted from \a s1; each component is
+  subtracted separately.
+*/
+
+/*!
+  \fn const QSize operator*( const QSize &s, int c )
+  \relates QSize
+  Multiplies \a s by \a c and returns the result.
+*/
+
+/*!
+  \overload const QSize operator*( int c, const QSize &s )
+  \relates QSize
+  Multiplies \a s by \a c and returns the result.
+*/
+
+/*!
+  \overload const QSize operator*( const QSize &s, double c )
+  \relates QSize
+  Multiplies \a s by \a c and returns the result.
+*/
+
+/*!
+  \overload const QSize operator*( double c, const QSize &s )
+  \relates QSize
+  Multiplies \a s by \a c and returns the result.
+*/
+
+/*!
+  \fn QSize &QSize::operator/=( int c )
+  Divides both the width and height by \a c and returns a reference to the
+  size.
+*/
+
+/*!
+  \fn QSize &QSize::operator/=( double c )
+  \overload
+  Divides both the width and height by \a c and returns a reference to the
+  size.
+
+  Note that the result is truncated.
+*/
+
+/*!
+  \fn const QSize operator/( const QSize &s, int c )
+  \relates QSize
+  Divides \a s by \a c and returns the result.
+*/
+
+/*!
+  \fn const QSize operator/( const QSize &s, double c )
+  \relates QSize
+  \overload
+  Divides \a s by \a c and returns the result.
+
+  Note that the result is truncated.
+*/
+
+/*!
+  \fn QSize QSize::expandedTo( const QSize & otherSize ) const
+
+  Returns a size with the maximum width and height of this size and
+  \a otherSize.
+*/
+
+/*!
+  \fn QSize QSize::boundedTo( const QSize & otherSize ) const
+
+  Returns a size with the minimum width and height of this size and
+  \a otherSize.
+*/
+
+
+void QSize::warningDivByZero()
+{
+#if defined(QT_CHECK_MATH)
+    qWarning( "QSize: Division by zero error" );
+#endif
+}
+
+
+/*****************************************************************************
+  QSize stream functions
+ *****************************************************************************/
+#ifndef QT_NO_DATASTREAM
+/*!
+  \relates QSize
+  Writes the size \a sz 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 QSize &sz )
+{
+    if ( s.version() == 1 )
+	s << (Q_INT16)sz.width() << (Q_INT16)sz.height();
+    else
+	s << (Q_INT32)sz.width() << (Q_INT32)sz.height();
+    return s;
+}
+
+/*!
+  \relates QSize
+  Reads the size from the stream \a s into size \a sz and returns a
+  reference to the stream.
+
+  \sa \link datastreamformat.html Format of the QDataStream operators \endlink
+*/
+
+QDataStream &operator>>( QDataStream &s, QSize &sz )
+{
+    if ( s.version() == 1 ) {
+	Q_INT16 w, h;
+	s >> w;  sz.rwidth() = w;
+	s >> h;  sz.rheight() = h;
+    }
+    else {
+	Q_INT32 w, h;
+	s >> w;  sz.rwidth() = w;
+	s >> h;  sz.rheight() = h;
+    }
+    return s;
+}
+#endif // QT_NO_DATASTREAM