Branch 1.3.5 tree to 1.4.x tree, goodbye 1.3.x

git-svn-id: svn://scribus.net/branches/Version14x/Scribus@17163 11d20701-8431-0410-a711-e3c959e3b870

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diff --git a/scribus/text/fsize.cpp b/scribus/text/fsize.cpp
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+/****************************************************************************
+** $Id$
+**
+** Implementation of FSize class
+**
+** Created : 931028
+**
+** Copyright (C) 1992-2000 Trolltech AS.  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 AS 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.
+**
+**********************************************************************/
+
+#include "fsize.h"
+//#include "qdatastream.h"
+
+
+/*!
+  \class FSize
+  \brief The FSize 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 qreal (defined in \c <qwindowdefs.h> as \c qreal).
+  The minimum value of qreal is qreal_MIN (-2147483648) and the maximum
+  value is qreal_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
+*/
+
+
+/*****************************************************************************
+  FSize member functions
+ *****************************************************************************/
+
+/*!
+  \fn FSize::FSize()
+  Constructs a size with invalid (negative) width and height.
+*/
+
+/*!
+  \fn FSize::FSize( qreal w, qreal h )
+  Constructs a size with width \a w and height \a h.
+*/
+
+/*!
+  \fn bool FSize::isNull() const
+  Returns TRUE if the width is 0 and the height is 0; otherwise
+  returns FALSE.
+*/
+
+/*!
+  \fn bool FSize::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 FSize::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 qreal FSize::width() const
+  Returns the width.
+  \sa height()
+*/
+
+/*!
+  \fn qreal FSize::height() const
+  Returns the height.
+  \sa width()
+*/
+
+/*!
+  \fn void FSize::setWidth( qreal w )
+  Sets the width to \a w.
+  \sa width(), setHeight()
+*/
+
+/*!
+  \fn void FSize::setHeight( qreal h )
+  Sets the height to \a h.
+  \sa height(), setWidth()
+*/
+
+/*!
+  Swaps the values of width and height.
+*/
+
+void FSize::transpose()
+{
+    qreal tmp = wd;
+    wd = ht;
+    ht = tmp;
+}
+
+/*! \enum FSize::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 FSize::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
+    FSize t1( 10, 12 );
+    t1.scale( 60, 60, FSize::ScaleFree );
+    // t1 is (60, 60)
+
+    FSize t2( 10, 12 );
+    t2.scale( 60, 60, FSize::ScaleMin );
+    // t2 is (50, 60)
+
+    FSize t3( 10, 12 );
+    t3.scale( 60, 60, FSize::ScaleMax );
+    // t3 is (60, 72)
+    \endcode
+*/
+void FSize::scale( qreal w, qreal h, Qt::AspectRatioMode mode )
+{
+    if ( mode == Qt::IgnoreAspectRatio ) {
+	wd = (qreal)w;
+	ht = (qreal)h;
+    } else {
+	bool useHeight = TRUE;
+	qreal w0 = width();
+	qreal h0 = height();
+	qreal rw = h * w0 / h0;
+
+	if ( mode == Qt::KeepAspectRatio ) {
+	    useHeight = ( rw <= w );
+	} else { // mode == ScaleMax
+	    useHeight = ( rw >= w );
+	}
+
+	if ( useHeight ) {
+	    wd = (qreal)rw;
+	    ht = (qreal)h;
+	} else {
+	    wd = (qreal)w;
+	    ht = (qreal)( w * h0 / w0 );
+	}
+    }
+}
+
+/*!
+    \overload
+
+    Equivalent to scale(\a{s}.width(), \a{s}.height(), \a mode).
+*/
+void FSize::scale( const FSize &s, Qt::AspectRatioMode mode )
+{
+    scale( s.width(), s.height(), mode );
+}
+
+/*!
+  \fn qreal &FSize::rwidth()
+  Returns a reference to the width.
+
+  Using a reference makes it possible to directly manipulate the width.
+
+  Example:
+  \code
+    FSize s( 100, 10 );
+    s.rwidth() += 20;		// s becomes (120,10)
+  \endcode
+
+  \sa rheight()
+*/
+
+/*!
+  \fn qreal &FSize::rheight()
+  Returns a reference to the height.
+
+  Using a reference makes it possible to directly manipulate the height.
+
+  Example:
+  \code
+    FSize s( 100, 10 );
+    s.rheight() += 5;		// s becomes (100,15)
+  \endcode
+
+  \sa rwidth()
+*/
+
+/*!
+  \fn FSize &FSize::operator+=( const FSize &s )
+
+  Adds \a s to the size and returns a reference to this size.
+
+  Example:
+  \code
+    FSize s(  3, 7 );
+    FSize r( -1, 4 );
+    s += r;			// s becomes (2,11)
+\endcode
+*/
+
+/*!
+  \fn FSize &FSize::operator-=( const FSize &s )
+
+  Subtracts \a s from the size and returns a reference to this size.
+
+  Example:
+  \code
+    FSize s(  3, 7 );
+    FSize r( -1, 4 );
+    s -= r;			// s becomes (4,3)
+  \endcode
+*/
+
+/*!
+  \fn FSize &FSize::operator*=( qreal c )
+  Multiplies both the width and height by \a c and returns a reference to
+  the size.
+*/
+
+/*!
+  \overload FSize &FSize::operator*=( qreal 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 FSize &s1, const FSize &s2 )
+  \relates FSize
+  Returns TRUE if \a s1 and \a s2 are equal; otherwise returns FALSE.
+*/
+
+/*!
+  \fn bool operator!=( const FSize &s1, const FSize &s2 )
+  \relates FSize
+  Returns TRUE if \a s1 and \a s2 are different; otherwise returns FALSE.
+*/
+
+/*!
+  \fn const FSize operator+( const FSize &s1, const FSize &s2 )
+  \relates FSize
+  Returns the sum of \a s1 and \a s2; each component is added separately.
+*/
+
+/*!
+  \fn const FSize operator-( const FSize &s1, const FSize &s2 )
+  \relates FSize
+  Returns \a s2 subtracted from \a s1; each component is
+  subtracted separately.
+*/
+
+/*!
+  \fn const FSize operator*( const FSize &s, qreal c )
+  \relates FSize
+  Multiplies \a s by \a c and returns the result.
+*/
+
+/*!
+  \overload const FSize operator*( qreal c, const FSize &s )
+  \relates FSize
+  Multiplies \a s by \a c and returns the result.
+*/
+
+/*!
+  \overload const FSize operator*( const FSize &s, qreal c )
+  \relates FSize
+  Multiplies \a s by \a c and returns the result.
+*/
+
+/*!
+  \overload const FSize operator*( qreal c, const FSize &s )
+  \relates FSize
+  Multiplies \a s by \a c and returns the result.
+*/
+
+/*!
+  \fn FSize &FSize::operator/=( qreal c )
+  Divides both the width and height by \a c and returns a reference to the
+  size.
+*/
+
+/*!
+  \fn FSize &FSize::operator/=( qreal 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 FSize operator/( const FSize &s, qreal c )
+  \relates FSize
+  Divides \a s by \a c and returns the result.
+*/
+
+/*!
+  \fn const FSize operator/( const FSize &s, qreal c )
+  \relates FSize
+  \overload
+  Divides \a s by \a c and returns the result.
+
+  Note that the result is truncated.
+*/
+
+/*!
+  \fn FSize FSize::expandedTo( const FSize & otherSize ) const
+
+  Returns a size with the maximum width and height of this size and
+  \a otherSize.
+*/
+
+/*!
+  \fn FSize FSize::boundedTo( const FSize & otherSize ) const
+
+  Returns a size with the minimum width and height of this size and
+  \a otherSize.
+*/
+
+
+void FSize::warningDivByZero()
+{
+#if defined(QT_CHECK_MATH)
+    qWarning( "FSize: Division by zero error" );
+#endif
+}
+
+
+/*****************************************************************************
+  FSize stream functions
+ *****************************************************************************/
+// #ifndef QT_NO_DATASTREAM
+// /*!
+//   \relates FSize
+//   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 FSize &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 FSize
+//   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, FSize &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