fdo#81356: convert Fraction to boost::rational<long> - wip

* Added rational util functions used by Fraction class not
available in the boost::rational class.
* Replaced usage of Fraction by boost::rational<long>
* Removed code that relies on:
1. fraction.IsValid() -- rational only allow valid values, ie
denominator() != 0
2. rational.denominator() == 0 -- always false
3. rational.denominator() < 0 -- always false but implementation
detail: http://www.boost.org/doc/libs/release/libs/rational/rational.html#Internal%20representation
* Simplified code that relies on:
1. rational.denominator() != 0 -- always true
* BUGS EXIST because Fraction allows the creation of invalid values but
boost::rational throws the exception boost::bad_rational

Change-Id: I84970a4956afb3f91ac0c8f726547466319420f9
Reviewed-on: https://gerrit.libreoffice.org/11551
Reviewed-by: David Tardon <dtardon@redhat.com>
Tested-by: David Tardon <dtardon@redhat.com>

46 files changed, 181 insertions, 187 deletions

diff --git a/sw/inc/accmap.hxx b/sw/inc/accmap.hxx
index 29dab399a691..e1a216d7ae3f 100644
--- a/sw/inc/accmap.hxx
+++ b/sw/inc/accmap.hxx
@@ -25,7 +25,7 @@
 #include <osl/mutex.hxx>
 #include <svx/IAccessibleViewForwarder.hxx>
 #include <svx/IAccessibleParent.hxx>
-#include <tools/fract.hxx>
+#include <tools/rational.hxx>
 
 #include <svx/AccessibleControlShape.hxx>
 #include <svx/AccessibleShape.hxx>
@@ -140,7 +140,7 @@ public:
     ::com::sun::star::uno::Reference<
         ::com::sun::star::accessibility::XAccessible> GetDocumentPreview(
                             const std::vector<PreviewPage*>& _rPreviewPages,
-                            const Fraction&  _rScale,
+                            const boost::rational<long>&  _rScale,
                             const SwPageFrm* _pSelectedPageFrm,
                             const Size&      _rPreviewWinSize );
 
@@ -249,7 +249,7 @@ public:
 
     // update preview data (and fire events if necessary)
     void UpdatePreview( const std::vector<PreviewPage*>& _rPreviewPages,
-                        const Fraction&  _rScale,
+                        const boost::rational<long>&  _rScale,
                         const SwPageFrm* _pSelectedPageFrm,
                         const Size&      _rPreviewWinSize );
 
diff --git a/sw/inc/dcontact.hxx b/sw/inc/dcontact.hxx
index 9f5ef1fc3c01..270f95ab18c2 100644
--- a/sw/inc/dcontact.hxx
+++ b/sw/inc/dcontact.hxx
@@ -279,12 +279,12 @@ class SwDrawVirtObj : public SdrVirtObj
         virtual SdrHdl* GetHdl(sal_uInt32 nHdlNum) const SAL_OVERRIDE;
         virtual SdrHdl* GetPlusHdl(const SdrHdl& rHdl, sal_uInt16 nPlNum) const;
         virtual void NbcMove(const Size& rSiz) SAL_OVERRIDE;
-        virtual void NbcResize(const Point& rRef, const Fraction& xFact, const Fraction& yFact) SAL_OVERRIDE;
+        virtual void NbcResize(const Point& rRef, const boost::rational<long>& xFact, const boost::rational<long>& yFact) SAL_OVERRIDE;
         virtual void NbcRotate(const Point& rRef, long nWink, double sn, double cs) SAL_OVERRIDE;
         virtual void NbcMirror(const Point& rRef1, const Point& rRef2) SAL_OVERRIDE;
         virtual void NbcShear(const Point& rRef, long nWink, double tn, bool bVShear) SAL_OVERRIDE;
         virtual void Move(const Size& rSiz) SAL_OVERRIDE;
-        virtual void Resize(const Point& rRef, const Fraction& xFact, const Fraction& yFact, bool bUnsetRelative = true) SAL_OVERRIDE;
+        virtual void Resize(const Point& rRef, const boost::rational<long>& xFact, const boost::rational<long>& yFact, bool bUnsetRelative = true) SAL_OVERRIDE;
         virtual void Rotate(const Point& rRef, long nWink, double sn, double cs) SAL_OVERRIDE;
         virtual void Mirror(const Point& rRef1, const Point& rRef2) SAL_OVERRIDE;
         virtual void Shear(const Point& rRef, long nWink, double tn, bool bVShear) SAL_OVERRIDE;
diff --git a/sw/inc/pagedesc.hxx b/sw/inc/pagedesc.hxx
index 58ab7a802f64..a9a4fc79c6f3 100644
--- a/sw/inc/pagedesc.hxx
+++ b/sw/inc/pagedesc.hxx
@@ -19,7 +19,7 @@
 #ifndef INCLUDED_SW_INC_PAGEDESC_HXX
 #define INCLUDED_SW_INC_PAGEDESC_HXX
 
-#include <tools/fract.hxx>
+#include <tools/rational.hxx>
 #include <tools/color.hxx>
 #include "swdllapi.h"
 #include <swtypes.hxx>
@@ -46,7 +46,7 @@ class SW_DLLPUBLIC SwPageFtnInfo
     sal_uLong   nLineWidth;              ///< width of separator line
     editeng::SvxBorderStyle eLineStyle;  ///< Style of the separator line
     Color       aLineColor;              ///< color of the separator line
-    Fraction    aWidth;                  ///< percentage width of the separator line.
+    boost::rational<long>    aWidth;     ///< percentage width of the separator line.
     SwFtnAdj    eAdj;                    ///< line adjustment.
     SwTwips     nTopDist;                ///< distance between body and separator.
     SwTwips     nBottomDist;             ///< distance between separator and first footnote
@@ -56,7 +56,7 @@ public:
     sal_uLong           GetLineWidth() const { return nLineWidth; }
     const Color&    GetLineColor() const { return aLineColor;}
     editeng::SvxBorderStyle  GetLineStyle() const { return eLineStyle; }
-    const Fraction& GetWidth() const    { return aWidth; }
+    const boost::rational<long>& GetWidth() const    { return aWidth; }
     SwFtnAdj    GetAdj()    const       { return eAdj; }
     SwTwips     GetTopDist()const       { return nTopDist; }
     SwTwips     GetBottomDist() const   { return nBottomDist; }
@@ -65,7 +65,7 @@ public:
     void SetLineWidth(sal_uLong nSet  )     { nLineWidth = nSet; }
     void SetLineStyle( editeng::SvxBorderStyle eSet )   { eLineStyle = eSet; }
     void SetLineColor(const Color& rCol )  { aLineColor = rCol;}
-    void SetWidth( const Fraction &rNew){ aWidth = rNew; }
+    void SetWidth( const boost::rational<long> &rNew){ aWidth = rNew; }
     void SetAdj   ( SwFtnAdj eNew )     { eAdj = eNew; }
     void SetTopDist   ( SwTwips nNew )  { nTopDist = nNew; }
     void SetBottomDist( SwTwips nNew )  { nBottomDist = nNew; }
diff --git a/sw/inc/pagepreviewlayout.hxx b/sw/inc/pagepreviewlayout.hxx
index 8c01106fd179..90488a1354f7 100644
--- a/sw/inc/pagepreviewlayout.hxx
+++ b/sw/inc/pagepreviewlayout.hxx
@@ -32,7 +32,7 @@
 class SwViewShell;
 class SwRootFrm;
 class SwPageFrm;
-class Fraction;
+namespace boost { template<typename T> class rational; }
 struct PreviewPage;
 
 /** page preview functionality in the writer
@@ -396,8 +396,8 @@ public:
 
         @return Point, start position for new scale
     */
-    Point GetPreviewStartPosForNewScale( const Fraction& _aNewScale,
-                                         const Fraction& _aOldScale,
+    Point GetPreviewStartPosForNewScale( const boost::rational<long>& _aNewScale,
+                                         const boost::rational<long>& _aOldScale,
                                          const Size&     _aNewWinSize ) const;
 
     /** determines, if page with given page number is visible in preview
diff --git a/sw/inc/pch/precompiled_sw.hxx b/sw/inc/pch/precompiled_sw.hxx
index f6c74f92bf27..2516af70c6b2 100644
--- a/sw/inc/pch/precompiled_sw.hxx
+++ b/sw/inc/pch/precompiled_sw.hxx
@@ -1024,7 +1024,7 @@
 #include <tools/diagnose_ex.h>
 #include <tools/errinf.hxx>
 #include <tools/fldunit.hxx>
-#include <tools/fract.hxx>
+#include <tools/rational.hxx>
 #include <tools/gen.hxx>
 #include <tools/globname.hxx>
 #include <tools/helpers.hxx>
diff --git a/sw/source/core/access/accmap.cxx b/sw/source/core/access/accmap.cxx
index 64a70c94a67e..63661e303225 100644
--- a/sw/source/core/access/accmap.cxx
+++ b/sw/source/core/access/accmap.cxx
@@ -602,7 +602,7 @@ class SwAccPreviewData
     Rectangles maLogicRects;
 
     SwRect maVisArea;
-    Fraction maScale;
+    boost::rational<long> maScale;
 
     const SwPageFrm *mpSelPage;
 
@@ -630,7 +630,7 @@ public:
 
     void Update( const SwAccessibleMap& rAccMap,
                  const std::vector<PreviewPage*>& _rPreviewPages,
-                 const Fraction&  _rScale,
+                 const boost::rational<long>&  _rScale,
                  const SwPageFrm* _pSelectedPageFrm,
                  const Size&      _rPreviewWinSize );
 
@@ -661,7 +661,7 @@ SwAccPreviewData::~SwAccPreviewData()
 
 void SwAccPreviewData::Update( const SwAccessibleMap& rAccMap,
                                const std::vector<PreviewPage*>& _rPreviewPages,
-                               const Fraction&  _rScale,
+                               const boost::rational<long>&  _rScale,
                                const SwPageFrm* _pSelectedPageFrm,
                                const Size&      _rPreviewWinSize )
 {
@@ -1801,7 +1801,7 @@ uno::Reference< XAccessible > SwAccessibleMap::GetDocumentView( )
 
 uno::Reference<XAccessible> SwAccessibleMap::GetDocumentPreview(
                                     const std::vector<PreviewPage*>& _rPreviewPages,
-                                    const Fraction&  _rScale,
+                                    const boost::rational<long>&  _rScale,
                                     const SwPageFrm* _pSelectedPageFrm,
                                     const Size&      _rPreviewWinSize )
 {
@@ -2964,7 +2964,7 @@ sal_Int32 SwAccessibleMap::GetChildIndex( const SwFrm& rParentFrm,
 }
 
 void SwAccessibleMap::UpdatePreview( const std::vector<PreviewPage*>& _rPreviewPages,
-                                     const Fraction&  _rScale,
+                                     const boost::rational<long>&  _rScale,
                                      const SwPageFrm* _pSelectedPageFrm,
                                      const Size&      _rPreviewWinSize )
 {
diff --git a/sw/source/core/doc/tblrwcl.cxx b/sw/source/core/doc/tblrwcl.cxx
index 1ce8a372c978..f7987da558e6 100644
--- a/sw/source/core/doc/tblrwcl.cxx
+++ b/sw/source/core/doc/tblrwcl.cxx
@@ -25,7 +25,7 @@
 #include <editeng/lrspitem.hxx>
 #include <editeng/protitem.hxx>
 #include <editeng/boxitem.hxx>
-#include <tools/fract.hxx>
+#include <tools/rational.hxx>
 #include <fmtfsize.hxx>
 #include <fmtornt.hxx>
 #include <doc.hxx>
@@ -3986,10 +3986,10 @@ void SetLineHeight( SwTableLine& rLine, SwTwips nOldHeight, SwTwips nNewHeight,
     else
     {
         // Calculate as exactly as possible
-        Fraction aTmp( nMyOldH );
-        aTmp *= Fraction( nNewHeight, nOldHeight );
-        aTmp += Fraction( 1, 2 );       // round up if needed
-        nMyNewH = aTmp;
+        boost::rational<long> aTmp( nMyOldH );
+        aTmp *= boost::rational<long>( nNewHeight, nOldHeight );
+        aTmp += boost::rational<long>( 1, 2 );       // round up if needed
+        nMyNewH = boost::rational_cast<long>(aTmp);
     }
 
     SwFrmSize eSize = ATT_MIN_SIZE;
diff --git a/sw/source/core/docnode/ndnotxt.cxx b/sw/source/core/docnode/ndnotxt.cxx
index 7a325c93cc94..6360b359e319 100644
--- a/sw/source/core/docnode/ndnotxt.cxx
+++ b/sw/source/core/docnode/ndnotxt.cxx
@@ -125,8 +125,8 @@ const tools::PolyPolygon *SwNoTxtNode::HasContour() const
                     const Size aGrfPrefMapModeSize( GetGraphic().GetPrefSize() );
                     if ( aGrfMap.GetMapUnit() == MAP_INCH )
                     {
-                        nGrfDPIx = aGrfPixelSize.Width() / ( (double)aGrfMap.GetScaleX() * aGrfPrefMapModeSize.Width() );
-                        nGrfDPIy = aGrfPixelSize.Height() / ( (double)aGrfMap.GetScaleY() * aGrfPrefMapModeSize.Height() );
+                        nGrfDPIx = aGrfPixelSize.Width() / ( boost::rational_cast<double>(aGrfMap.GetScaleX()) * aGrfPrefMapModeSize.Width() );
+                        nGrfDPIy = aGrfPixelSize.Height() / ( boost::rational_cast<double>(aGrfMap.GetScaleY()) * aGrfPrefMapModeSize.Height() );
                     }
                     else
                     {
diff --git a/sw/source/core/draw/dcontact.cxx b/sw/source/core/draw/dcontact.cxx
index d9c9af706e65..b9f1318f648e 100644
--- a/sw/source/core/draw/dcontact.cxx
+++ b/sw/source/core/draw/dcontact.cxx
@@ -2372,7 +2372,7 @@ void SwDrawVirtObj::NbcMove(const Size& rSiz)
     SdrObject::NbcMove( rSiz );
 }
 
-void SwDrawVirtObj::NbcResize(const Point& rRef, const Fraction& xFact, const Fraction& yFact)
+void SwDrawVirtObj::NbcResize(const Point& rRef, const boost::rational<long>& xFact, const boost::rational<long>& yFact)
 {
     rRefObj.NbcResize(rRef - GetOffset(), xFact, yFact);
     SetRectsDirty();
@@ -2401,9 +2401,9 @@ void SwDrawVirtObj::Move(const Size& rSiz)
     SdrObject::Move( rSiz );
 }
 
-void SwDrawVirtObj::Resize(const Point& rRef, const Fraction& xFact, const Fraction& yFact, bool bUnsetRelative)
+void SwDrawVirtObj::Resize(const Point& rRef, const boost::rational<long>& xFact, const boost::rational<long>& yFact, bool bUnsetRelative)
 {
-    if(xFact.GetNumerator() != xFact.GetDenominator() || yFact.GetNumerator() != yFact.GetDenominator())
+    if(xFact.numerator() != xFact.denominator() || yFact.numerator() != yFact.denominator())
     {
         Rectangle aBoundRect0; if(pUserCall) aBoundRect0 = GetLastBoundRect();
         rRefObj.Resize(rRef - GetOffset(), xFact, yFact, bUnsetRelative);
diff --git a/sw/source/core/draw/dflyobj.cxx b/sw/source/core/draw/dflyobj.cxx
index caad92de8c9d..834bc65fc6e3 100644
--- a/sw/source/core/draw/dflyobj.cxx
+++ b/sw/source/core/draw/dflyobj.cxx
@@ -731,7 +731,7 @@ void SwVirtFlyDrawObj::NbcMove(const Size& rSiz)
 }
 
 void SwVirtFlyDrawObj::NbcResize(const Point& rRef,
-            const Fraction& xFact, const Fraction& yFact)
+            const boost::rational<long>& xFact, const boost::rational<long>& yFact)
 {
     ResizeRect( aOutRect, rRef, xFact, yFact );
 
@@ -843,7 +843,7 @@ void SwVirtFlyDrawObj::Move(const Size& rSiz)
 }
 
 void SwVirtFlyDrawObj::Resize(const Point& rRef,
-                    const Fraction& xFact, const Fraction& yFact, bool /*bUnsetRelative*/)
+                    const boost::rational<long>& xFact, const boost::rational<long>& yFact, bool /*bUnsetRelative*/)
 {
     NbcResize( rRef, xFact, yFact );
     SetChanged();
diff --git a/sw/source/core/frmedt/fecopy.cxx b/sw/source/core/frmedt/fecopy.cxx
index 3669a5902734..0cbcb5e97636 100644
--- a/sw/source/core/frmedt/fecopy.cxx
+++ b/sw/source/core/frmedt/fecopy.cxx
@@ -1389,8 +1389,8 @@ void SwFEShell::Paste( SvStream& rStrm, sal_uInt16 nAction, const Point* pPt )
                 Rectangle aNewRect( pNewObj->GetCurrentBoundRect() );
                 Size aNewSize( aNewRect.GetSize() );
 
-                Fraction aScaleWidth( aOldObjSize.Width(), aNewSize.Width() );
-                Fraction aScaleHeight( aOldObjSize.Height(), aNewSize.Height());
+                boost::rational<long> aScaleWidth( aOldObjSize.Width(), aNewSize.Width() );
+                boost::rational<long> aScaleHeight( aOldObjSize.Height(), aNewSize.Height());
                 pNewObj->NbcResize( aNewRect.TopLeft(), aScaleWidth, aScaleHeight);
 
                 Point aVec = aOldObjRect.TopLeft() - aNewRect.TopLeft();
diff --git a/sw/source/core/graphic/ndgrf.cxx b/sw/source/core/graphic/ndgrf.cxx
index 280c6d45b7e1..d4cc181943f6 100644
--- a/sw/source/core/graphic/ndgrf.cxx
+++ b/sw/source/core/graphic/ndgrf.cxx
@@ -812,8 +812,8 @@ void SwGrfNode::ScaleImageMap()
         return;
 
     bool bScale = false;
-    Fraction aScaleX( 1, 1 );
-    Fraction aScaleY( 1, 1 );
+    boost::rational<long> aScaleX( 1, 1 );
+    boost::rational<long> aScaleY( 1, 1 );
 
     const SwFmtFrmSize& rFrmSize = pFmt->GetFrmSize();
     const SvxBoxItem& rBox = pFmt->GetBox();
@@ -829,7 +829,7 @@ void SwGrfNode::ScaleImageMap()
 
         if( nGrfSize.Width() != nWidth )
         {
-            aScaleX = Fraction( nGrfSize.Width(), nWidth );
+            aScaleX = boost::rational<long>( nGrfSize.Width(), nWidth );
             bScale = true;
         }
     }
@@ -844,7 +844,7 @@ void SwGrfNode::ScaleImageMap()
 
         if( nGrfSize.Height() != nHeight )
         {
-            aScaleY = Fraction( nGrfSize.Height(), nHeight );
+            aScaleY = boost::rational<long>( nGrfSize.Height(), nHeight );
             bScale = true;
         }
     }
diff --git a/sw/source/core/inc/dflyobj.hxx b/sw/source/core/inc/dflyobj.hxx
index 058e64c13d8e..79e9f37471d7 100644
--- a/sw/source/core/inc/dflyobj.hxx
+++ b/sw/source/core/inc/dflyobj.hxx
@@ -99,11 +99,11 @@ public:
     virtual       void       NbcSetLogicRect(const Rectangle& rRect) SAL_OVERRIDE;
     virtual ::basegfx::B2DPolyPolygon TakeXorPoly() const SAL_OVERRIDE;
     virtual       void       NbcMove  (const Size& rSiz) SAL_OVERRIDE;
-    virtual       void       NbcResize(const Point& rRef, const Fraction& xFact,
-                                       const Fraction& yFact) SAL_OVERRIDE;
+    virtual       void       NbcResize(const Point& rRef, const boost::rational<long>& xFact,
+                                       const boost::rational<long>& yFact) SAL_OVERRIDE;
     virtual       void       Move  (const Size& rSiz) SAL_OVERRIDE;
-    virtual       void       Resize(const Point& rRef, const Fraction& xFact,
-                                    const Fraction& yFact, bool bUnsetRelative = true) SAL_OVERRIDE;
+    virtual       void       Resize(const Point& rRef, const boost::rational<long>& xFact,
+                                    const boost::rational<long>& yFact, bool bUnsetRelative = true) SAL_OVERRIDE;
 
     const SwFrmFmt *GetFmt() const;
           SwFrmFmt *GetFmt();
diff --git a/sw/source/core/inc/viewimp.hxx b/sw/source/core/inc/viewimp.hxx
index 66a652510944..ae86642f8d73 100644
--- a/sw/source/core/inc/viewimp.hxx
+++ b/sw/source/core/inc/viewimp.hxx
@@ -40,7 +40,7 @@ class SwPageFrm;
 class SwRegionRects;
 class SwAccessibleMap;
 class SdrObject;
-class Fraction;
+namespace boost { template<typename T> class rational; }
 class SwPrintData;
 class SwPagePreviewLayout;
 struct PreviewPage;
@@ -262,7 +262,7 @@ public:
     /// update data for accessible preview
     /// change method signature due to new page preview functionality
     void UpdateAccessiblePreview( const std::vector<PreviewPage*>& _rPreviewPages,
-                                  const Fraction&  _rScale,
+                                  const boost::rational<long>&  _rScale,
                                   const SwPageFrm* _pSelectedPageFrm,
                                   const Size&      _rPreviewWinSize );
 
diff --git a/sw/source/core/layout/anchoreddrawobject.cxx b/sw/source/core/layout/anchoreddrawobject.cxx
index 628ed1356d5b..58fa20cac362 100644
--- a/sw/source/core/layout/anchoreddrawobject.cxx
+++ b/sw/source/core/layout/anchoreddrawobject.cxx
@@ -655,13 +655,14 @@ const SwRect SwAnchoredDrawObject::GetObjBoundRect() const
             nTargetHeight = aPageRect.GetHeight( ) * GetDrawObj( )->GetRelativeHeight( ).get( );
         }
 
-        if ( nTargetWidth != aCurrObjRect.GetWidth( ) || nTargetHeight != aCurrObjRect.GetHeight( ) )
+        if ( (nTargetWidth != aCurrObjRect.GetWidth( ) || nTargetHeight != aCurrObjRect.GetHeight( ))
+                && aCurrObjRect.GetWidth() != 0 && aCurrObjRect.GetHeight() != 0 )
         {
             SwDoc* pDoc = const_cast<SwDoc*>(GetPageFrm()->GetFmt()->GetDoc());
             bool bModified = pDoc->getIDocumentState().IsModified();
             const_cast< SdrObject* >( GetDrawObj() )->Resize( aCurrObjRect.TopLeft(),
-                    Fraction( nTargetWidth, aCurrObjRect.GetWidth() ),
-                    Fraction( nTargetHeight, aCurrObjRect.GetHeight() ), false );
+                    boost::rational<long>( nTargetWidth, aCurrObjRect.GetWidth() ),
+                    boost::rational<long>( nTargetHeight, aCurrObjRect.GetHeight() ), false );
             if (!bModified)
                 pDoc->getIDocumentState().ResetModified();
         }
diff --git a/sw/source/core/layout/fly.cxx b/sw/source/core/layout/fly.cxx
index 40131ecd2fe7..9299a2120abd 100644
--- a/sw/source/core/layout/fly.cxx
+++ b/sw/source/core/layout/fly.cxx
@@ -867,8 +867,8 @@ void SwFlyFrm::_UpdateAttr( const SfxPoolItem *pOld, const SfxPoolItem *pNew,
                 if ( rOld.GetWidth() && rOld.GetHeight() )
                 {
 
-                    Fraction aScaleX( rOld.GetWidth(), rNew.GetWidth() );
-                    Fraction aScaleY( rOld.GetHeight(), rOld.GetHeight() );
+                    boost::rational<long> aScaleX( rOld.GetWidth(), rNew.GetWidth() );
+                    boost::rational<long> aScaleY( rOld.GetHeight(), rOld.GetHeight() );
                     aURL.GetMap()->Scale( aScaleX, aScaleY );
                     SwFrmFmt *pFmt = GetFmt();
                     pFmt->LockModify();
@@ -994,8 +994,8 @@ void SwFlyFrm::_UpdateAttr( const SfxPoolItem *pOld, const SfxPoolItem *pNew,
                      rSz.GetWidth()  != Frm().Width() )
                 {
                     SwFmtURL aURL( GetFmt()->GetURL() );
-                    Fraction aScaleX( Frm().Width(),  rSz.GetWidth() );
-                    Fraction aScaleY( Frm().Height(), rSz.GetHeight() );
+                    boost::rational<long> aScaleX( Frm().Width(),  rSz.GetWidth() );
+                    boost::rational<long> aScaleY( Frm().Height(), rSz.GetHeight() );
                     aURL.GetMap()->Scale( aScaleX, aScaleY );
                     SwFrmFmt *pFmt = GetFmt();
                     pFmt->LockModify();
diff --git a/sw/source/core/layout/paintfrm.cxx b/sw/source/core/layout/paintfrm.cxx
index be4fc5f80fd3..b2c9f8d0ebea 100644
--- a/sw/source/core/layout/paintfrm.cxx
+++ b/sw/source/core/layout/paintfrm.cxx
@@ -355,8 +355,8 @@ void SwCalcPixStatics( OutputDevice *pOut )
     nMinDistPixelH = nPixelSzH * 2 + 1;
 
     const MapMode &rMap = pOut->GetMapMode();
-    aScaleX = rMap.GetScaleX();
-    aScaleY = rMap.GetScaleY();
+    aScaleX = boost::rational_cast<double>(rMap.GetScaleX());
+    aScaleY = boost::rational_cast<double>(rMap.GetScaleY());
 }
 
 /**
@@ -2960,17 +2960,17 @@ void SwTabFrmPainter::Insert( const SwFrm& rFrm, const SvxBoxItem& rBoxItem )
     SwViewShell* pViewShell = mrTabFrm.getRootFrm()->GetCurrShell();
     OutputDevice* pOutDev = pViewShell->GetOut();
     const MapMode& rMapMode = pOutDev->GetMapMode();
-    const Fraction& rFracX = rMapMode.GetScaleX();
-    const Fraction& rFracY = rMapMode.GetScaleY();
+    const boost::rational<long>& rFracX = rMapMode.GetScaleX();
+    const boost::rational<long>& rFracY = rMapMode.GetScaleY();
 
     svx::frame::Style aL(rBoxItem.GetLeft());
-    aL.SetPatternScale(rFracY);
+    aL.SetPatternScale(boost::rational_cast<double>(rFracY));
     svx::frame::Style aR(rBoxItem.GetRight());
-    aR.SetPatternScale(rFracY);
+    aR.SetPatternScale(boost::rational_cast<double>(rFracY));
     svx::frame::Style aT(rBoxItem.GetTop());
-    aT.SetPatternScale(rFracX);
+    aT.SetPatternScale(boost::rational_cast<double>(rFracX));
     svx::frame::Style aB(rBoxItem.GetBottom());
-    aB.SetPatternScale(rFracX);
+    aB.SetPatternScale(boost::rational_cast<double>(rFracX));
 
     aR.MirrorSelf();
     aB.MirrorSelf();
@@ -5576,8 +5576,7 @@ void SwFtnContFrm::PaintLine( const SwRect& rRect,
 
     SWRECTFN( this )
     SwTwips nPrtWidth = (Prt().*fnRect->fnGetWidth)();
-    Fraction aFract( nPrtWidth, 1 );
-    const SwTwips nWidth = (long)(aFract *= rInf.GetWidth());
+    const SwTwips nWidth = boost::rational_cast<long>(long(nPrtWidth) * rInf.GetWidth());
 
     SwTwips nX = (this->*fnRect->fnGetPrtLeft)();
     switch ( rInf.GetAdj() )
diff --git a/sw/source/core/text/porlay.hxx b/sw/source/core/text/porlay.hxx
index 3784cdaad445..1213a06b0f23 100644
--- a/sw/source/core/text/porlay.hxx
+++ b/sw/source/core/text/porlay.hxx
@@ -19,7 +19,7 @@
 #ifndef INCLUDED_SW_SOURCE_CORE_TEXT_PORLAY_HXX
 #define INCLUDED_SW_SOURCE_CORE_TEXT_PORLAY_HXX
 
-#include <tools/fract.hxx>
+#include <tools/rational.hxx>
 #include <scriptinfo.hxx>
 
 #include "swrect.hxx"
diff --git a/sw/source/core/txtnode/fntcache.cxx b/sw/source/core/txtnode/fntcache.cxx
index 0e88feb0f1ce..f3b648bc2af0 100644
--- a/sw/source/core/txtnode/fntcache.cxx
+++ b/sw/source/core/txtnode/fntcache.cxx
@@ -467,12 +467,10 @@ void SwFntObj::CreateScrFont( const SwViewShell& rSh, const OutputDevice& rOut )
         // one in the ViewOptions, this Font must not be cached,
         // hence set zoom factor to an invalid value
         long nTmp;
-        if( pOut->GetMapMode().GetScaleX().IsValid() &&
-            pOut->GetMapMode().GetScaleY().IsValid() &&
-            pOut->GetMapMode().GetScaleX() == pOut->GetMapMode().GetScaleY() )
+        if( pOut->GetMapMode().GetScaleX() == pOut->GetMapMode().GetScaleY() )
         {
-            nTmp = ( 100 * pOut->GetMapMode().GetScaleX().GetNumerator() ) /
-                     pOut->GetMapMode().GetScaleX().GetDenominator();
+            nTmp = ( 100 * pOut->GetMapMode().GetScaleX().numerator() ) /
+                     pOut->GetMapMode().GetScaleX().denominator();
         }
         else
             nTmp = 0;
@@ -1133,7 +1131,7 @@ void SwFntObj::DrawText( SwDrawTextInfo &rInf )
 
     if ( bDirectPrint )
     {
-        const Fraction aTmp( 1, 1 );
+        const boost::rational<long> aTmp( 1, 1 );
         bool bStretch = rInf.GetWidth() && ( rInf.GetLen() > 1 ) && bPrt
                         && ( aTmp != rInf.GetOut().GetMapMode().GetScaleX() );
 
diff --git a/sw/source/core/view/pagepreviewlayout.cxx b/sw/source/core/view/pagepreviewlayout.cxx
index 3e8004ab1776..4f2307c6e4c7 100644
--- a/sw/source/core/view/pagepreviewlayout.cxx
+++ b/sw/source/core/view/pagepreviewlayout.cxx
@@ -215,17 +215,17 @@ bool SwPagePreviewLayout::Init( const sal_uInt16 _nCols,
         // calculate scaling
         MapMode aMapMode( MAP_TWIP );
         Size aWinSize = mrParentViewShell.GetOut()->PixelToLogic( _rPxWinSize, aMapMode );
-        Fraction aXScale( aWinSize.Width(), mnPreviewLayoutWidth );
-        Fraction aYScale( aWinSize.Height(), mnPreviewLayoutHeight );
+        boost::rational<long> aXScale( aWinSize.Width(), mnPreviewLayoutWidth );
+        boost::rational<long> aYScale( aWinSize.Height(), mnPreviewLayoutHeight );
         if( aXScale < aYScale )
             aYScale = aXScale;
         {
             // adjust scaling for Drawing layer.
-            aYScale *= Fraction( 1000, 1 );
-            long nNewNuminator = aYScale.operator long();
+            aYScale *= boost::rational<long>( 1000, 1 );
+            long nNewNuminator = boost::rational_cast<long>(aYScale);
             if( nNewNuminator < 1 )
                 nNewNuminator = 1;
-            aYScale = Fraction( nNewNuminator, 1000 );
+            aYScale = boost::rational<long>( nNewNuminator, 1000 );
             // propagate scaling as zoom percentage to view options for font cache
             _ApplyNewZoomAtViewShell( static_cast<sal_uInt8>(nNewNuminator/10) );
         }
@@ -740,8 +740,8 @@ bool SwPagePreviewLayout::SetBookPreviewMode( const bool _bEnableBookPreview,
     OD 12.12.2002 #103492#
 */
 Point SwPagePreviewLayout::GetPreviewStartPosForNewScale(
-                          const Fraction& _aNewScale,
-                          const Fraction& _aOldScale,
+                          const boost::rational<long>& _aNewScale,
+                          const boost::rational<long>& _aOldScale,
                           const Size&     _aNewWinSize ) const
 {
     Point aNewPaintStartPos = maPaintedPreviewDocRect.TopLeft();
diff --git a/sw/source/core/view/viewimp.cxx b/sw/source/core/view/viewimp.cxx
index ed381b74d6a9..68725dbbda18 100644
--- a/sw/source/core/view/viewimp.cxx
+++ b/sw/source/core/view/viewimp.cxx
@@ -70,8 +70,8 @@ void SwViewImp::Init( const SwViewOption *pNewOpt )
             ( rSz.Width() ? rSz.Width() /std::max(short(1),pNewOpt->GetDivisionX()):0,
               rSz.Height()? rSz.Height()/std::max(short(1),pNewOpt->GetDivisionY()):0);
      pDrawView->SetGridFine( aFSize );
-    Fraction aSnGrWdtX(rSz.Width(), pNewOpt->GetDivisionX() + 1);
-    Fraction aSnGrWdtY(rSz.Height(), pNewOpt->GetDivisionY() + 1);
+    boost::rational<long> aSnGrWdtX(rSz.Width(), pNewOpt->GetDivisionX() + 1);
+    boost::rational<long> aSnGrWdtY(rSz.Height(), pNewOpt->GetDivisionY() + 1);
     pDrawView->SetSnapGridWidth( aSnGrWdtX, aSnGrWdtY );
 
     if ( pRoot->Frm().HasArea() )
@@ -432,7 +432,7 @@ void SwViewImp::_InvalidateAccessibleParaAttrs( const SwTxtFrm& rTxtFrm )
 
 // OD 15.01.2003 #103492# - method signature change due to new page preview functionality
 void SwViewImp::UpdateAccessiblePreview( const std::vector<PreviewPage*>& _rPreviewPages,
-                                         const Fraction&  _rScale,
+                                         const boost::rational<long>&  _rScale,
                                          const SwPageFrm* _pSelectedPageFrm,
                                          const Size&      _rPreviewWinSize )
 {
diff --git a/sw/source/core/view/viewpg.cxx b/sw/source/core/view/viewpg.cxx
index 601c710b54c1..2e086c4ede71 100644
--- a/sw/source/core/view/viewpg.cxx
+++ b/sw/source/core/view/viewpg.cxx
@@ -175,20 +175,20 @@ void SwViewShell::PrintProspect(
     // set the MapMode
     aMapMode.SetOrigin( Point() );
     {
-        Fraction aScX( aPrtSize.Width(), nMaxColSz );
-        Fraction aScY( aPrtSize.Height(), nMaxRowSz );
+        boost::rational<long> aScX( aPrtSize.Width(), nMaxColSz );
+        boost::rational<long> aScY( aPrtSize.Height(), nMaxRowSz );
         if( aScX < aScY )
             aScY = aScX;
 
         {
             // Round percentages for Drawings so that these can paint their objects properly
-            aScY *= Fraction( 1000, 1 );
-            long nTmp = (long)aScY;
+            aScY *= boost::rational<long>( 1000, 1 );
+            long nTmp = boost::rational_cast<long>(aScY);
             if( 1 < nTmp )
                 --nTmp;
             else
                 nTmp = 1;
-            aScY = Fraction( nTmp, 1000 );
+            aScY = boost::rational<long>( nTmp, 1000 );
         }
 
         aMapMode.SetScaleY( aScY );
diff --git a/sw/source/core/view/viewsh.cxx b/sw/source/core/view/viewsh.cxx
index 0731c2b07298..d861c8d51cc8 100644
--- a/sw/source/core/view/viewsh.cxx
+++ b/sw/source/core/view/viewsh.cxx
@@ -1775,8 +1775,8 @@ void SwViewShell::PaintTile(VirtualDevice &rDevice, int contextWidth, int contex
 
     // Scaling. Must convert from pixels to twips. We know
     // that VirtualDevises use a DPI of 96.
-    Fraction scaleX = Fraction(contextWidth, 96) * Fraction(1440L) / Fraction(tileWidth);
-    Fraction scaleY = Fraction(contextHeight, 96) * Fraction(1440L) / Fraction(tileHeight);
+    boost::rational<long> scaleX = boost::rational<long>(contextWidth, 96) * boost::rational<long>(1440L) / boost::rational<long>(tileWidth);
+    boost::rational<long> scaleY = boost::rational<long>(contextHeight, 96) * boost::rational<long>(1440L) / boost::rational<long>(tileHeight);
     aMapMode.SetScaleX(scaleX);
     aMapMode.SetScaleY(scaleY);
     rDevice.SetMapMode(aMapMode);
@@ -2131,7 +2131,7 @@ void SwViewShell::ImplApplyViewOptions( const SwViewOption &rOpt )
     if( mpOpt->GetZoom() != rOpt.GetZoom() && !IsPreview() )
     {
         MapMode aMode( pMyWin->GetMapMode() );
-        Fraction aNewFactor( rOpt.GetZoom(), 100 );
+        boost::rational<long> aNewFactor( rOpt.GetZoom(), 100 );
         aMode.SetScaleX( aNewFactor );
         aMode.SetScaleY( aNewFactor );
         pMyWin->SetMapMode( aMode );
@@ -2172,8 +2172,8 @@ void SwViewShell::ImplApplyViewOptions( const SwViewOption &rOpt )
             ( rSz.Width() ? rSz.Width() / (rOpt.GetDivisionX()+1) : 0,
               rSz.Height()? rSz.Height()/ (rOpt.GetDivisionY()+1) : 0);
         pDView->SetGridFine( aFSize );
-        Fraction aSnGrWdtX(rSz.Width(), rOpt.GetDivisionX() + 1);
-        Fraction aSnGrWdtY(rSz.Height(), rOpt.GetDivisionY() + 1);
+        boost::rational<long> aSnGrWdtX(rSz.Width(), rOpt.GetDivisionX() + 1);
+        boost::rational<long> aSnGrWdtY(rSz.Height(), rOpt.GetDivisionY() + 1);
         pDView->SetSnapGridWidth( aSnGrWdtX, aSnGrWdtY );
 
             // set handle size to 9 pixels, always
diff --git a/sw/source/core/view/vnew.cxx b/sw/source/core/view/vnew.cxx
index 231abcdcb7ec..4b38f181d0b8 100644
--- a/sw/source/core/view/vnew.cxx
+++ b/sw/source/core/view/vnew.cxx
@@ -65,7 +65,7 @@ void SwViewShell::Init( const SwViewOption *pNewOpt )
             if( GetWin() && 100 != mpOpt->GetZoom() )
             {
                 MapMode aMode( mpWin->GetMapMode() );
-                const Fraction aNewFactor( mpOpt->GetZoom(), 100 );
+                const boost::rational<long> aNewFactor( mpOpt->GetZoom(), 100 );
                 aMode.SetScaleX( aNewFactor );
                 aMode.SetScaleY( aNewFactor );
                 mpWin->SetMapMode( aMode );
diff --git a/sw/source/filter/html/htmlflywriter.cxx b/sw/source/filter/html/htmlflywriter.cxx
index 6a0d313b6316..17e207eed8b5 100644
--- a/sw/source/filter/html/htmlflywriter.cxx
+++ b/sw/source/filter/html/htmlflywriter.cxx
@@ -1120,8 +1120,8 @@ OUString lclWriteOutImap(SwHTMLWriter& rHTMLWrt, const SfxItemSet& rItemSet, con
         } while (bFound);
 
         bool bScale = false;
-        Fraction aScaleX(1, 1);
-        Fraction aScaleY(1, 1);
+        boost::rational<long> aScaleX(1, 1);
+        boost::rational<long> aScaleY(1, 1);
 
         const SwFmtFrmSize& rFrmSize = rFrmFmt.GetFrmSize();
         const SvxBoxItem& rBox = rFrmFmt.GetBox();
@@ -1137,7 +1137,7 @@ OUString lclWriteOutImap(SwHTMLWriter& rHTMLWrt, const SfxItemSet& rItemSet, con
 
             if (rRealSize.Width() != nWidth)
             {
-                aScaleX = Fraction(nWidth, rRealSize.Width());
+                aScaleX = boost::rational<long>(nWidth, rRealSize.Width());
                 bScale = true;
             }
         }
@@ -1154,7 +1154,7 @@ OUString lclWriteOutImap(SwHTMLWriter& rHTMLWrt, const SfxItemSet& rItemSet, con
 
             if (rRealSize.Height() != nHeight)
             {
-                aScaleY = Fraction(nHeight, rRealSize.Height());
+                aScaleY = boost::rational<long>(nHeight, rRealSize.Height());
                 bScale = true;
             }
         }
diff --git a/sw/source/filter/writer/wrtswtbl.cxx b/sw/source/filter/writer/wrtswtbl.cxx
index cfa1781afff8..3285e1379636 100644
--- a/sw/source/filter/writer/wrtswtbl.cxx
+++ b/sw/source/filter/writer/wrtswtbl.cxx
@@ -20,7 +20,7 @@
 #include <hintids.hxx>
 #include <editeng/boxitem.hxx>
 #include <editeng/brushitem.hxx>
-#include <tools/fract.hxx>
+#include <tools/rational.hxx>
 #include <wrtswtbl.hxx>
 #include <swtable.hxx>
 #include <frmfmt.hxx>
@@ -344,8 +344,7 @@ sal_uInt16 SwWriteTable::GetRelWidth( sal_uInt16 nCol, sal_uInt16 nColSpan ) con
 {
     long nWidth = GetRawWidth( nCol, nColSpan );
 
-    return (sal_uInt16)(long)Fraction( nWidth*256 + GetBaseWidth()/2,
-                                   GetBaseWidth() );
+    return (sal_uInt16) boost::rational_cast<long>(boost::rational<long>(nWidth * 256 + GetBaseWidth() / 2, GetBaseWidth()));
 }
 
 sal_uInt16 SwWriteTable::GetPrcWidth( sal_uInt16 nCol, sal_uInt16 nColSpan ) const
@@ -354,8 +353,7 @@ sal_uInt16 SwWriteTable::GetPrcWidth( sal_uInt16 nCol, sal_uInt16 nColSpan ) con
 
     // Looks funny, but is nothing more than
     // [(100 * nWidth) + .5] without rounding errors
-    return (sal_uInt16)(long)Fraction( nWidth*100 + GetBaseWidth()/2,
-                                   GetBaseWidth() );
+    return (sal_uInt16) boost::rational_cast<long>(boost::rational<long>(nWidth * 100 + GetBaseWidth() / 2, GetBaseWidth()));
 }
 
 long SwWriteTable::GetAbsHeight(long nRawHeight, size_t const nRow,
diff --git a/sw/source/filter/ww1/w1filter.cxx b/sw/source/filter/ww1/w1filter.cxx
index 1ee058754799..937b4b260bc6 100644
--- a/sw/source/filter/ww1/w1filter.cxx
+++ b/sw/source/filter/ww1/w1filter.cxx
@@ -1878,8 +1878,8 @@ void Ww1Picture::Out(Ww1Shell& rOut, Ww1Manager& /*rMan*/)
             aWMF.SetPrefMapMode(MapMode(MAP_100TH_MM));
             Size aOldSiz(aWMF.GetPrefSize());
             Size aNewSiz(pPic->mfp.xExtGet(), pPic->mfp.yExtGet());
-            Fraction aFracX(aNewSiz.Width(), aOldSiz.Width());
-            Fraction aFracY(aNewSiz.Height(), aOldSiz.Height());
+            boost::rational<long> aFracX(aNewSiz.Width(), aOldSiz.Width());
+            boost::rational<long> aFracY(aNewSiz.Height(), aOldSiz.Height());
             aWMF.Scale(aFracX, aFracY);
             aWMF.SetPrefSize(aNewSiz);
             pGraphic = new Graphic(aWMF);
diff --git a/sw/source/filter/ww8/docxattributeoutput.cxx b/sw/source/filter/ww8/docxattributeoutput.cxx
index 2529b1a496fc..3b144fdab5b8 100644
--- a/sw/source/filter/ww8/docxattributeoutput.cxx
+++ b/sw/source/filter/ww8/docxattributeoutput.cxx
@@ -6709,7 +6709,7 @@ void DocxAttributeOutput::FootnotesEndnotes( bool bFootnotes )
     {
         const SwPageFtnInfo& rFtnInfo = m_rExport.pDoc->GetPageDesc(0).GetFtnInfo();
         // Request a separator only in case the width is larger than zero.
-        bSeparator = double(rFtnInfo.GetWidth()) > 0;
+        bSeparator = boost::rational_cast<double>(rFtnInfo.GetWidth()) > 0;
     }
 
     if (bSeparator)
diff --git a/sw/source/filter/ww8/rtfexport.cxx b/sw/source/filter/ww8/rtfexport.cxx
index ba6aae0547b1..0d8e1d2c97cb 100644
--- a/sw/source/filter/ww8/rtfexport.cxx
+++ b/sw/source/filter/ww8/rtfexport.cxx
@@ -396,7 +396,7 @@ void RtfExport::WriteFootnoteSettings()
 {
     const SwPageFtnInfo& rFtnInfo = pDoc->GetPageDesc(0).GetFtnInfo();
     // Request a separator only in case the width is larger than zero.
-    bool bSeparator = double(rFtnInfo.GetWidth()) > 0;
+    bool bSeparator = boost::rational_cast<double>(rFtnInfo.GetWidth()) > 0;
 
     Strm().WriteChar('{').WriteCharPtr(OOO_STRING_SVTOOLS_RTF_IGNORE).WriteCharPtr(OOO_STRING_SVTOOLS_RTF_FTNSEP);
     if (bSeparator)
diff --git a/sw/source/filter/ww8/writerhelper.cxx b/sw/source/filter/ww8/writerhelper.cxx
index 0fc558f546b1..aa0362d2191a 100644
--- a/sw/source/filter/ww8/writerhelper.cxx
+++ b/sw/source/filter/ww8/writerhelper.cxx
@@ -666,9 +666,9 @@ namespace sw
         {
             Polygon aPoly(PolygonFromPolyPolygon(rPolyPoly));
             const Size &rOrigSize = pNd->GetGraphic().GetPrefSize();
-            Fraction aMapPolyX(ww::nWrap100Percent, rOrigSize.Width());
-            Fraction aMapPolyY(ww::nWrap100Percent, rOrigSize.Height());
-            aPoly.Scale(aMapPolyX, aMapPolyY);
+            boost::rational<long> aMapPolyX(ww::nWrap100Percent, rOrigSize.Width());
+            boost::rational<long> aMapPolyY(ww::nWrap100Percent, rOrigSize.Height());
+            aPoly.Scale(boost::rational_cast<double>(aMapPolyX), boost::rational_cast<double>(aMapPolyY));
 
             /*
              a) stretch right bound by 15twips
@@ -678,15 +678,15 @@ namespace sw
              See the import for details
             */
             const Size &rSize = pNd->GetTwipSize();
-            Fraction aMoveHack(ww::nWrap100Percent, rSize.Width());
-            aMoveHack *= Fraction(15, 1);
-            long nMove(aMoveHack);
+            boost::rational<long> aMoveHack(ww::nWrap100Percent, rSize.Width());
+            aMoveHack *= boost::rational<long>(15, 1);
+            long nMove(boost::rational_cast<long>(aMoveHack));
 
-            Fraction aHackX(ww::nWrap100Percent + nMove,
+            boost::rational<long> aHackX(ww::nWrap100Percent + nMove,
                     ww::nWrap100Percent);
-            Fraction aHackY(ww::nWrap100Percent - nMove,
+            boost::rational<long> aHackY(ww::nWrap100Percent - nMove,
                     ww::nWrap100Percent);
-            aPoly.Scale(aHackX, aHackY);
+            aPoly.Scale(boost::rational_cast<double>(aHackX), boost::rational_cast<double>(aHackY));
 
             aPoly.Move(-nMove, 0);
             return aPoly;
diff --git a/sw/source/filter/ww8/wrtw8esh.cxx b/sw/source/filter/ww8/wrtw8esh.cxx
index 1c2f3ff8bf32..1c5e838b1d19 100644
--- a/sw/source/filter/ww8/wrtw8esh.cxx
+++ b/sw/source/filter/ww8/wrtw8esh.cxx
@@ -2155,12 +2155,12 @@ void SwBasicEscherEx::Init()
 
     // MS-DFF-Properties sind grossteils in EMU (English Metric Units) angegeben
     // 1mm=36000emu, 1twip=635emu
-    Fraction aFact(360, 1);
+    boost::rational<long> aFact(360, 1);
     aFact /= GetMapFactor(MAP_100TH_MM, eMap).X();
     // create little values
-    aFact = Fraction(aFact.GetNumerator(), aFact.GetDenominator());
-    mnEmuMul = aFact.GetNumerator();
-    mnEmuDiv = aFact.GetDenominator();
+    aFact = boost::rational<long>(aFact.numerator(), aFact.denominator());
+    mnEmuMul = aFact.numerator();
+    mnEmuDiv = aFact.denominator();
 
     SetHellLayerId(rWrt.pDoc->getIDocumentDrawModelAccess().GetHellId());
 }
diff --git a/sw/source/filter/ww8/ww8graf.cxx b/sw/source/filter/ww8/ww8graf.cxx
index 56324f571182..02abc6c6f2d1 100644
--- a/sw/source/filter/ww8/ww8graf.cxx
+++ b/sw/source/filter/ww8/ww8graf.cxx
@@ -1951,20 +1951,20 @@ void SwWW8ImplReader::MapWrapIntoFlyFmt(SvxMSDffImportRec* pRecord,
              b) stretch bottom bound to where I think it should have been
              in the first place
             */
-            Fraction aMoveHack(ww::nWrap100Percent, rSize.Width());
-            aMoveHack *= Fraction(15, 1);
-            long nMove(aMoveHack);
+            boost::rational<long> aMoveHack(ww::nWrap100Percent, rSize.Width());
+            aMoveHack *= boost::rational<long>(15, 1);
+            long nMove(boost::rational_cast<long>(aMoveHack));
             aPoly.Move(nMove, 0);
 
-            Fraction aHackX(ww::nWrap100Percent, ww::nWrap100Percent + nMove);
-            Fraction aHackY(ww::nWrap100Percent, ww::nWrap100Percent - nMove);
-            aPoly.Scale(aHackX, aHackY);
+            boost::rational<long> aHackX(ww::nWrap100Percent, ww::nWrap100Percent + nMove);
+            boost::rational<long> aHackY(ww::nWrap100Percent, ww::nWrap100Percent - nMove);
+            aPoly.Scale(boost::rational_cast<double>(aHackX), boost::rational_cast<double>(aHackY));
 
             // Turn polygon back into units that match the graphic's
             const Size &rOrigSize = pNd->GetGraphic().GetPrefSize();
-            Fraction aMapPolyX(rOrigSize.Width(), ww::nWrap100Percent);
-            Fraction aMapPolyY(rOrigSize.Height(), ww::nWrap100Percent);
-            aPoly.Scale(aMapPolyX, aMapPolyY);
+            boost::rational<long> aMapPolyX(rOrigSize.Width(), ww::nWrap100Percent);
+            boost::rational<long> aMapPolyY(rOrigSize.Height(), ww::nWrap100Percent);
+            aPoly.Scale(boost::rational_cast<double>(aMapPolyX), boost::rational_cast<double>(aMapPolyY));
 
             // #i47277# - contour is already in unit of the
             // graphic preferred unit. Thus, call method <SetContour(..)>
diff --git a/sw/source/filter/ww8/ww8par4.cxx b/sw/source/filter/ww8/ww8par4.cxx
index b09fec67d5bf..b7dcac3b7831 100644
--- a/sw/source/filter/ww8/ww8par4.cxx
+++ b/sw/source/filter/ww8/ww8par4.cxx
@@ -170,8 +170,8 @@ static bool SwWw6ReadMetaStream(GDIMetaFile& rWMF, OLE_MFP* pMfp,
     // neue Groesse am MetaFile setzen
     Size        aOldSiz( rWMF.GetPrefSize() );
     Size        aNewSiz( pMfp->xExt, pMfp->yExt );
-    Fraction    aFracX( aNewSiz.Width(), aOldSiz.Width() );
-    Fraction    aFracY( aNewSiz.Height(), aOldSiz.Height() );
+    boost::rational<long>    aFracX( aNewSiz.Width(), aOldSiz.Width() );
+    boost::rational<long>    aFracY( aNewSiz.Height(), aOldSiz.Height() );
 
     rWMF.Scale( aFracX, aFracY );
     rWMF.SetPrefSize( aNewSiz );
@@ -326,8 +326,8 @@ bool SwWW8ImplReader::ImportOleWMF(SvStorageRef xSrc1,GDIMetaFile &rWMF,
         aFinalSize = OutputDevice::LogicToLogic(
             aFinalSize, MAP_TWIP, rWMF.GetPrefMapMode() );
         aOrigSize = rWMF.GetPrefSize();
-        Fraction aScaleX(aFinalSize.Width(),aOrigSize.Width());
-        Fraction aScaleY(aFinalSize.Height(),aOrigSize.Height());
+        boost::rational<long> aScaleX(aFinalSize.Width(),aOrigSize.Width());
+        boost::rational<long> aScaleY(aFinalSize.Height(),aOrigSize.Height());
         rWMF.Scale( aScaleX, aScaleY );
         bOk = true;
     }
diff --git a/sw/source/ui/misc/pgfnote.cxx b/sw/source/ui/misc/pgfnote.cxx
index e81e2c34d6f4..0c5d52970705 100644
--- a/sw/source/ui/misc/pgfnote.cxx
+++ b/sw/source/ui/misc/pgfnote.cxx
@@ -243,9 +243,9 @@ void SwFootNotePage::Reset(const SfxItemSet *rSet)
     m_pLinePosBox->SelectEntryPos( static_cast< sal_Int32 >(pFtnInfo->GetAdj()) );
 
         // width
-    Fraction aTmp( 100, 1 );
+    boost::rational<long> aTmp( 100, 1 );
     aTmp *= pFtnInfo->GetWidth();
-    m_pLineLengthEdit->SetValue( static_cast<long>(aTmp) );
+    m_pLineLengthEdit->SetValue( boost::rational_cast<long>(aTmp) );
 
         // gap footnote area
     m_pDistEdit->SetValue(m_pDistEdit->Normalize(pFtnInfo->GetTopDist()),FUNIT_TWIP);
@@ -292,7 +292,7 @@ bool SwFootNotePage::FillItemSet(SfxItemSet *rSet)
     rFtnInfo.SetAdj((SwFtnAdj)m_pLinePosBox->GetSelectEntryPos());
 
         // Breite
-    rFtnInfo.SetWidth(Fraction( static_cast< long >(m_pLineLengthEdit->GetValue()), 100));
+    rFtnInfo.SetWidth(boost::rational<long>( static_cast< long >(m_pLineLengthEdit->GetValue()), 100));
 
     const SfxPoolItem* pOldItem;
     if(0 == (pOldItem = GetOldItem( *rSet, FN_PARAM_FTN_INFO )) ||
diff --git a/sw/source/uibase/docvw/PostItMgr.cxx b/sw/source/uibase/docvw/PostItMgr.cxx
index 5daecba4624c..54366223c8d3 100644
--- a/sw/source/uibase/docvw/PostItMgr.cxx
+++ b/sw/source/uibase/docvw/PostItMgr.cxx
@@ -1909,32 +1909,32 @@ void SwPostItMgr::Rescale()
 
 sal_Int32 SwPostItMgr::GetInitialAnchorDistance() const
 {
-    const Fraction& f( mpEditWin->GetMapMode().GetScaleY() );
-    return POSTIT_INITIAL_ANCHOR_DISTANCE * f.GetNumerator() / f.GetDenominator();
+    const boost::rational<long>& f( mpEditWin->GetMapMode().GetScaleY() );
+    return POSTIT_INITIAL_ANCHOR_DISTANCE * f.numerator() / f.denominator();
 }
 
 sal_Int32 SwPostItMgr::GetSpaceBetween() const
 {
-    const Fraction& f( mpEditWin->GetMapMode().GetScaleY() );
-    return ( POSTIT_SPACE_BETWEEN ) * f.GetNumerator() / f.GetDenominator();
+    const boost::rational<long>& f( mpEditWin->GetMapMode().GetScaleY() );
+    return ( POSTIT_SPACE_BETWEEN ) * f.numerator() / f.denominator();
 }
 
 sal_Int32 SwPostItMgr::GetScrollSize() const
 {
-    const Fraction& f( mpEditWin->GetMapMode().GetScaleY() );
-    return ( POSTIT_SPACE_BETWEEN + POSTIT_MINIMUMSIZE_WITH_META ) * f.GetNumerator() / f.GetDenominator();
+    const boost::rational<long>& f( mpEditWin->GetMapMode().GetScaleY() );
+    return ( POSTIT_SPACE_BETWEEN + POSTIT_MINIMUMSIZE_WITH_META ) * f.numerator() / f.denominator();
 }
 
 sal_Int32 SwPostItMgr::GetMinimumSizeWithMeta() const
 {
-    const Fraction& f( mpEditWin->GetMapMode().GetScaleY() );
-    return POSTIT_MINIMUMSIZE_WITH_META * f.GetNumerator() / f.GetDenominator();
+    const boost::rational<long>& f( mpEditWin->GetMapMode().GetScaleY() );
+    return POSTIT_MINIMUMSIZE_WITH_META * f.numerator() / f.denominator();
 }
 
 sal_Int32 SwPostItMgr::GetSidebarScrollerHeight() const
 {
-    const Fraction& f( mpEditWin->GetMapMode().GetScaleY() );
-    return POSTIT_SCROLL_SIDEBAR_HEIGHT * f.GetNumerator() / f.GetDenominator();
+    const boost::rational<long>& f( mpEditWin->GetMapMode().GetScaleY() );
+    return POSTIT_SCROLL_SIDEBAR_HEIGHT * f.numerator() / f.denominator();
 }
 
 void SwPostItMgr::SetSpellChecking()
diff --git a/sw/source/uibase/docvw/SidebarWin.cxx b/sw/source/uibase/docvw/SidebarWin.cxx
index d3c1b0be7936..ba4c47437f42 100644
--- a/sw/source/uibase/docvw/SidebarWin.cxx
+++ b/sw/source/uibase/docvw/SidebarWin.cxx
@@ -508,7 +508,7 @@ void SwSidebarWin::Rescale()
     {
         vcl::Font aFont( mpMetadataAuthor->GetSettings().GetStyleSettings().GetFieldFont() );
         sal_Int32 nHeight = aFont.GetHeight();
-        nHeight = nHeight * aMode.GetScaleY().GetNumerator() / aMode.GetScaleY().GetDenominator();
+        nHeight = nHeight * aMode.GetScaleY().numerator() / aMode.GetScaleY().denominator();
         aFont.SetHeight( nHeight );
         mpMetadataAuthor->SetControlFont( aFont );
     }
@@ -516,7 +516,7 @@ void SwSidebarWin::Rescale()
     {
         vcl::Font aFont( mpMetadataDate->GetSettings().GetStyleSettings().GetFieldFont() );
         sal_Int32 nHeight = aFont.GetHeight();
-        nHeight = nHeight * aMode.GetScaleY().GetNumerator() / aMode.GetScaleY().GetDenominator();
+        nHeight = nHeight * aMode.GetScaleY().numerator() / aMode.GetScaleY().denominator();
         aFont.SetHeight( nHeight );
         mpMetadataDate->SetControlFont( aFont );
     }
@@ -780,26 +780,26 @@ void SwSidebarWin::DoResize()
     mpVScrollbar->SetRange( Range(0, mpOutliner->GetTextHeight()));
 
     //calculate rects for meta- button
-    const Fraction& fx( GetMapMode().GetScaleX() );
-    const Fraction& fy( GetMapMode().GetScaleY() );
+    const boost::rational<long>& fx( GetMapMode().GetScaleX() );
+    const boost::rational<long>& fy( GetMapMode().GetScaleY() );
 
     const Point aPos( mpMetadataAuthor->GetPosPixel());
     Rectangle aRectMetaButton;
     if (IsPreview())
     {
         aRectMetaButton = PixelToLogic(
-            Rectangle( Point( aPos.X()+GetSizePixel().Width()-(METABUTTON_WIDTH*4+10)*fx.GetNumerator()/fx.GetDenominator(),
-                              aPos.Y()+5*fy.GetNumerator()/fy.GetDenominator() ),
-                       Size( METABUTTON_WIDTH*4*fx.GetNumerator()/fx.GetDenominator(),
-                             METABUTTON_HEIGHT*fy.GetNumerator()/fy.GetDenominator() ) ) );
+            Rectangle( Point( aPos.X()+GetSizePixel().Width()-(METABUTTON_WIDTH*4+10)*fx.numerator()/fx.denominator(),
+                              aPos.Y()+5*fy.numerator()/fy.denominator() ),
+                       Size( METABUTTON_WIDTH*4*fx.numerator()/fx.denominator(),
+                             METABUTTON_HEIGHT*fy.numerator()/fy.denominator() ) ) );
     }
     else
     {
         aRectMetaButton = PixelToLogic(
-            Rectangle( Point( aPos.X()+GetSizePixel().Width()-(METABUTTON_WIDTH+10)*fx.GetNumerator()/fx.GetDenominator(),
-                              aPos.Y()+5*fy.GetNumerator()/fy.GetDenominator() ),
-                       Size( METABUTTON_WIDTH*fx.GetNumerator()/fx.GetDenominator(),
-                             METABUTTON_HEIGHT*fy.GetNumerator()/fy.GetDenominator() ) ) );
+            Rectangle( Point( aPos.X()+GetSizePixel().Width()-(METABUTTON_WIDTH+10)*fx.numerator()/fx.denominator(),
+                              aPos.Y()+5*fy.numerator()/fy.denominator() ),
+                       Size( METABUTTON_WIDTH*fx.numerator()/fx.denominator(),
+                             METABUTTON_HEIGHT*fy.numerator()/fy.denominator() ) ) );
     }
 
     {
@@ -1208,17 +1208,17 @@ sal_Int32 SwSidebarWin::GetScrollbarWidth()
 
 sal_Int32 SwSidebarWin::GetMetaButtonAreaWidth()
 {
-    const Fraction& f( GetMapMode().GetScaleX() );
+    const boost::rational<long>& f( GetMapMode().GetScaleX() );
     if (IsPreview())
-        return 3 * METABUTTON_AREA_WIDTH * f.GetNumerator() / f.GetDenominator();
+        return 3 * METABUTTON_AREA_WIDTH * f.numerator() / f.denominator();
     else
-        return METABUTTON_AREA_WIDTH * f.GetNumerator() / f.GetDenominator();
+        return METABUTTON_AREA_WIDTH * f.numerator() / f.denominator();
 }
 
 sal_Int32 SwSidebarWin::GetMetaHeight()
 {
-    const Fraction& f( GetMapMode().GetScaleY() );
-    return POSTIT_META_HEIGHT * f.GetNumerator() / f.GetDenominator();
+    const boost::rational<long>& f( GetMapMode().GetScaleY() );
+    return POSTIT_META_HEIGHT * f.numerator() / f.denominator();
 }
 
 sal_Int32 SwSidebarWin::GetMinimumSizeWithMeta()
@@ -1228,8 +1228,8 @@ sal_Int32 SwSidebarWin::GetMinimumSizeWithMeta()
 
 sal_Int32 SwSidebarWin::GetMinimumSizeWithoutMeta()
 {
-    const Fraction& f( GetMapMode().GetScaleY() );
-    return POSTIT_MINIMUMSIZE_WITHOUT_META * f.GetNumerator() / f.GetDenominator();
+    const boost::rational<long>& f( GetMapMode().GetScaleY() );
+    return POSTIT_MINIMUMSIZE_WITHOUT_META * f.numerator() / f.denominator();
 }
 
 void SwSidebarWin::SetSpellChecking()
diff --git a/sw/source/uibase/frmdlg/colex.cxx b/sw/source/uibase/frmdlg/colex.cxx
index d11992e6ff82..2bdec9a95915 100644
--- a/sw/source/uibase/frmdlg/colex.cxx
+++ b/sw/source/uibase/frmdlg/colex.cxx
@@ -336,7 +336,7 @@ SwColumnOnlyExample::SwColumnOnlyExample(vcl::Window* pParent)
     ::FitToActualSize(m_aCols, (sal_uInt16)m_aFrmSize.Width());
 
     long nHeight = m_aFrmSize.Height();
-    Fraction aScale( m_aWinSize.Height(), nHeight );
+    boost::rational<long> aScale( m_aWinSize.Height(), nHeight );
     MapMode aMapMode( GetMapMode() );
     aMapMode.SetScaleX( aScale );
     aMapMode.SetScaleY( aScale );
diff --git a/sw/source/uibase/inc/pview.hxx b/sw/source/uibase/inc/pview.hxx
index 162ef375eb3a..96eb7760ef9d 100644
--- a/sw/source/uibase/inc/pview.hxx
+++ b/sw/source/uibase/inc/pview.hxx
@@ -48,7 +48,7 @@ class SwPagePreviewWin : public vcl::Window
     sal_uInt16              mnSttPage;
     sal_uInt8                mnRow, mnCol;
     Size                maPxWinSize;
-    Fraction            maScale;
+    boost::rational<long>            maScale;
     SwPagePreview&      mrView;
     bool                mbCalcScaleForPreviewLayout;
     Rectangle           maPaintedPreviewDocRect;
diff --git a/sw/source/uibase/inc/view.hxx b/sw/source/uibase/inc/view.hxx
index e624560e071f..64040606ccf7 100644
--- a/sw/source/uibase/inc/view.hxx
+++ b/sw/source/uibase/inc/view.hxx
@@ -492,7 +492,7 @@ public:
     void            InsFrmMode(sal_uInt16 nCols);
 
     void            SetZoom( SvxZoomType eZoomType, short nFactor = 100, bool bViewOnly = false);
-    virtual void    SetZoomFactor( const Fraction &rX, const Fraction & ) SAL_OVERRIDE;
+    virtual void    SetZoomFactor( const boost::rational<long> &rX, const boost::rational<long> & ) SAL_OVERRIDE;
 
     void            SetViewLayout( sal_uInt16 nColumns, bool bBookMode, bool bViewOnly = false );
 
diff --git a/sw/source/uibase/uiview/pview.cxx b/sw/source/uibase/uiview/pview.cxx
index a3980162cfbb..1f7c255acb94 100644
--- a/sw/source/uibase/uiview/pview.cxx
+++ b/sw/source/uibase/uiview/pview.cxx
@@ -1741,7 +1741,7 @@ void SwPagePreviewWin::AdjustPreviewToNewZoom( const sal_uInt16 _nZoomFactor,
     else if ( _nZoomFactor != 0 )
     {
         // calculate new scaling and set mapping mode appropriately.
-        Fraction aNewScale( _nZoomFactor, 100 );
+        boost::rational<long> aNewScale( _nZoomFactor, 100 );
         MapMode aNewMapMode = GetMapMode();
         aNewMapMode.SetScaleX( aNewScale );
         aNewMapMode.SetScaleY( aNewScale );
diff --git a/sw/source/uibase/uiview/swcli.cxx b/sw/source/uibase/uiview/swcli.cxx
index 71b57499ddb2..900bab9db0e7 100644
--- a/sw/source/uibase/uiview/swcli.cxx
+++ b/sw/source/uibase/uiview/swcli.cxx
@@ -67,8 +67,8 @@ void SwOleClient::RequestNewObjectArea( Rectangle& aLogRect )
         MapMode aObjectMap( VCLUnoHelper::UnoEmbed2VCLMapUnit( GetObject()->getMapUnit( GetAspect() ) ) );
         MapMode aClientMap( GetEditWin()->GetMapMode().GetMapUnit() );
 
-        Size aNewObjSize( Fraction( aLogRect.GetWidth() ) / GetScaleWidth(),
-                          Fraction( aLogRect.GetHeight() ) / GetScaleHeight() );
+        Size aNewObjSize( boost::rational_cast<long>(aLogRect.GetWidth() / GetScaleWidth()),
+                          boost::rational_cast<long>(aLogRect.GetHeight() / GetScaleHeight()) );
 
         // convert to logical coordinates of the embedded object
         Size aNewSize = GetEditWin()->LogicToLogic( aNewObjSize, &aClientMap, &aObjectMap );
@@ -141,8 +141,8 @@ void SwOleClient::ViewChanged()
     const MapMode aObjMap( VCLUnoHelper::UnoEmbed2VCLMapUnit( GetObject()->getMapUnit( GetAspect() ) ) );
     aVisSize = OutputDevice::LogicToLogic( aVisSize, aObjMap, aMyMap );
 
-    aVisSize.Width() = Fraction( aVisSize.Width()  ) * GetScaleWidth();
-    aVisSize.Height()= Fraction( aVisSize.Height() ) * GetScaleHeight();
+    aVisSize.Width() = boost::rational_cast<long>(aVisSize.Width() * GetScaleWidth());
+    aVisSize.Height()= boost::rational_cast<long>(aVisSize.Height() * GetScaleHeight());
 
     SwRect aRect( Point( LONG_MIN, LONG_MIN ), aVisSize );
     rSh.LockView( true );   // Prevent scrolling in the EndAction
diff --git a/sw/source/uibase/uiview/view.cxx b/sw/source/uibase/uiview/view.cxx
index 993b26bed8d7..1b93bc50cae4 100644
--- a/sw/source/uibase/uiview/view.cxx
+++ b/sw/source/uibase/uiview/view.cxx
@@ -892,7 +892,7 @@ SwView::SwView( SfxViewFrame *_pFrame, SfxViewShell* pOldSh )
     StartListening( *pDocSh, true );
 
     // Set Zoom-factor from HRuler
-    Fraction aZoomFract( aUsrPref.GetZoom(), 100 );
+    boost::rational<long> aZoomFract( aUsrPref.GetZoom(), 100 );
     m_pHRuler->SetZoom( aZoomFract );
     m_pVRuler->SetZoom( aZoomFract );
     m_pHRuler->SetDoubleClickHdl(LINK( this, SwView, ExecRulerClick ));
diff --git a/sw/source/uibase/uiview/viewmdi.cxx b/sw/source/uibase/uiview/viewmdi.cxx
index bd16c2680e54..2082a43a5b41 100644
--- a/sw/source/uibase/uiview/viewmdi.cxx
+++ b/sw/source/uibase/uiview/viewmdi.cxx
@@ -192,7 +192,7 @@ void SwView::_SetZoom( const Size &rEditSize, SvxZoomType eZoomType,
         m_pWrtShell->ApplyViewOptions( aOpt );
     }
 
-    const Fraction aFrac( nFac, 100 );
+    const boost::rational<long> aFrac( nFac, 100 );
     m_pVRuler->SetZoom( aFrac );
     m_pVRuler->ForceUpdate();
     m_pHRuler->SetZoom( aFrac );
diff --git a/sw/source/uibase/uiview/viewport.cxx b/sw/source/uibase/uiview/viewport.cxx
index 742afb0b1172..90903289afb5 100644
--- a/sw/source/uibase/uiview/viewport.cxx
+++ b/sw/source/uibase/uiview/viewport.cxx
@@ -947,8 +947,8 @@ void SwView::InnerResizePixel( const Point &rOfst, const Size &rSize )
         aSize.Width() -= (aBorder.Left() + aBorder.Right());
         aSize.Height() -= (aBorder.Top() + aBorder.Bottom());
         Size aObjSizePixel = GetWindow()->LogicToPixel( aObjSize, MAP_TWIP );
-        SfxViewShell::SetZoomFactor( Fraction( aSize.Width(), aObjSizePixel.Width() ),
-                        Fraction( aSize.Height(), aObjSizePixel.Height() ) );
+        SfxViewShell::SetZoomFactor( boost::rational<long>( aSize.Width(), aObjSizePixel.Width() ),
+                        boost::rational<long>( aSize.Height(), aObjSizePixel.Height() ) );
     }
 
     m_bInInnerResizePixel = true;
@@ -985,12 +985,10 @@ void SwView::InnerResizePixel( const Point &rOfst, const Size &rSize )
 
         if( m_pHRuler->IsVisible() || m_pVRuler->IsVisible() )
         {
-            const Fraction& rFrac = GetEditWin().GetMapMode().GetScaleX();
-            long nZoom = 100;
-            if (rFrac.IsValid())
-                nZoom = rFrac.GetNumerator() * 100L / rFrac.GetDenominator();
+            const boost::rational<long>& rFrac = GetEditWin().GetMapMode().GetScaleX();
+            long nZoom = rFrac.numerator() * 100L / rFrac.denominator();
 
-            const Fraction aFrac( nZoom, 100 );
+            const boost::rational<long> aFrac( nZoom, 100 );
             m_pVRuler->SetZoom( aFrac );
             m_pHRuler->SetZoom( aFrac );
             InvalidateRulerPos();   // Invalidate content.
@@ -1136,10 +1134,10 @@ void SwView::OuterResizePixel( const Point &rOfst, const Size &rSize )
     }
 }
 
-void SwView::SetZoomFactor( const Fraction &rX, const Fraction &rY )
+void SwView::SetZoomFactor( const boost::rational<long>& rX, const boost::rational<long>& rY )
 {
-    const Fraction &rFrac = rX < rY ? rX : rY;
-    SetZoom( SVX_ZOOM_PERCENT, (short) long(rFrac * Fraction( 100, 1 )) );
+    const boost::rational<long>&rFrac = rX < rY ? rX : rY;
+    SetZoom( SVX_ZOOM_PERCENT, (short) boost::rational_cast<long>(rFrac * 100) );
 
     // To minimize rounding errors we also adjust the odd values
     // of the base class if necessary.
diff --git a/sw/source/uibase/utlui/uiitems.cxx b/sw/source/uibase/utlui/uiitems.cxx
index 2bd0c8b911b6..a15c23091ceb 100644
--- a/sw/source/uibase/utlui/uiitems.cxx
+++ b/sw/source/uibase/utlui/uiitems.cxx
@@ -88,9 +88,9 @@ bool SwPageFtnInfoItem::QueryValue( Any& rVal, sal_uInt8 nMemberId ) const
         case MID_LINE_COLOR        :     rVal <<= (sal_Int32)aFtnInfo.GetLineColor().GetColor();break;
         case MID_LINE_RELWIDTH     :
         {
-            Fraction aTmp( 100, 1 );
+            boost::rational<long> aTmp( 100, 1 );
             aTmp *= aFtnInfo.GetWidth();
-            rVal <<= (sal_Int8)(long)aTmp;
+            rVal <<= (sal_Int8)boost::rational_cast<long>(aTmp);
         }
         break;
         case MID_LINE_ADJUST       :     rVal <<= (sal_Int16)aFtnInfo.GetAdj();break;//text::HorizontalAdjust
@@ -158,7 +158,7 @@ bool SwPageFtnInfoItem::PutValue(const Any& rVal, sal_uInt8 nMemberId)
             if(nSet < 0)
                 bRet = false;
             else
-                aFtnInfo.SetWidth(Fraction(nSet, 100));
+                aFtnInfo.SetWidth(boost::rational<long>(nSet, 100));
         }
         break;
         case MID_LINE_ADJUST       :
diff --git a/sw/source/uibase/wrtsh/wrtsh1.cxx b/sw/source/uibase/wrtsh/wrtsh1.cxx
index e7f78d121334..3a7ddf2860cf 100644
--- a/sw/source/uibase/wrtsh/wrtsh1.cxx
+++ b/sw/source/uibase/wrtsh/wrtsh1.cxx
@@ -743,8 +743,8 @@ void SwWrtShell::CalcAndSetScale( svt::EmbeddedObjectRef& xObj,
 
     Size _aVisArea( aSize.Width, aSize.Height );
 
-    Fraction aScaleWidth( 1, 1 );
-    Fraction aScaleHeight( 1, 1 );
+    boost::rational<long> aScaleWidth( 1, 1 );
+    boost::rational<long> aScaleHeight( 1, 1 );
 
     bool bUseObjectSize = false;
 
@@ -777,8 +777,8 @@ void SwWrtShell::CalcAndSetScale( svt::EmbeddedObjectRef& xObj,
             }
             else
             {
-                aScaleWidth = Fraction( aObjArea.Width(),   _aVisArea.Width() );
-                aScaleHeight = Fraction( aObjArea.Height(), _aVisArea.Height());
+                aScaleWidth = boost::rational<long>( aObjArea.Width(),   _aVisArea.Width() );
+                aScaleHeight = boost::rational<long>( aObjArea.Height(), _aVisArea.Height());
             }
         }
     }
@@ -815,8 +815,8 @@ void SwWrtShell::CalcAndSetScale( svt::EmbeddedObjectRef& xObj,
     }
     else
     {
-        aArea.Width ( Fraction( aArea.Width()  ) / pCli->GetScaleWidth() );
-        aArea.Height( Fraction( aArea.Height() ) / pCli->GetScaleHeight());
+        aArea.Width ( boost::rational_cast<long>(aArea.Width() / pCli->GetScaleWidth()) );
+        aArea.Height( boost::rational_cast<long>(aArea.Height() / pCli->GetScaleHeight()) );
     }
 
     pCli->SetObjAreaAndScale( aArea.SVRect(), aScaleWidth, aScaleHeight );