sw: remove silly BigInt based SqRt

Change-Id: I0a23682998fcf23f917289a0137d137b240a9d92

4 files changed, 23 insertions, 53 deletions

diff --git a/sw/source/core/inc/frmtool.hxx b/sw/source/core/inc/frmtool.hxx
index 33043516190c..e44862c958c5 100644
--- a/sw/source/core/inc/frmtool.hxx
+++ b/sw/source/core/inc/frmtool.hxx
@@ -35,7 +35,6 @@ class SwRootFrm;
 class SwDoc;
 class SwAttrSet;
 class SdrObject;
-class BigInt;
 class SvxBrushItem;
 class XFillStyleItem;
 class XFillGradientItem;
@@ -82,8 +81,6 @@ void PaintCharacterBorder(
 // Implementation in feshview.cxx
 SwFlyFrm *GetFlyFromMarked( const SdrMarkList *pLst, SwViewShell *pSh );
 
-sal_uLong SqRt( BigInt nX );
-
 SwFrm *SaveCntnt( SwLayoutFrm *pLay, SwFrm *pStart = NULL );
 void RestoreCntnt( SwFrm *pSav, SwLayoutFrm *pParent, SwFrm *pSibling, bool bGrow );
 
diff --git a/sw/source/core/layout/flycnt.cxx b/sw/source/core/layout/flycnt.cxx
index 7b7ef16b67db..06c6885b0d0c 100644
--- a/sw/source/core/layout/flycnt.cxx
+++ b/sw/source/core/layout/flycnt.cxx
@@ -877,7 +877,7 @@ static const SwFrm * lcl_CalcDownDist( SwDistance &rRet,
     return 0;
 }
 
-static sal_uLong lcl_FindCntDiff( const Point &rPt, const SwLayoutFrm *pLay,
+static sal_uInt64 lcl_FindCntDiff( const Point &rPt, const SwLayoutFrm *pLay,
                           const SwCntntFrm *& rpCnt,
                           const bool bBody, const sal_Bool bFtn )
 {
@@ -890,8 +890,8 @@ static sal_uLong lcl_FindCntDiff( const Point &rPt, const SwLayoutFrm *pLay,
 #endif
 
     rpCnt = 0;
-    sal_uLong nDistance = ULONG_MAX;
-    sal_uLong nNearest  = ULONG_MAX;
+    sal_uInt64 nDistance = SAL_MAX_UINT64;
+    sal_uInt64 nNearest  = SAL_MAX_UINT64;
     const SwCntntFrm *pCnt = pLay->ContainsCntnt();
 
     while ( pCnt && (bBody != pCnt->IsInDocBody() || bFtn != pCnt->IsInFtn()))
@@ -907,13 +907,12 @@ static sal_uLong lcl_FindCntDiff( const Point &rPt, const SwLayoutFrm *pLay,
         {
             //Calculate the distance between those two points.
             //'delta' X^2 + 'delta' Y^2 = 'distance'^2
-            sal_uInt32 dX = std::max( pCnt->Frm().Left(), rPt.X() ) -
+            sal_uInt64 dX = std::max( pCnt->Frm().Left(), rPt.X() ) -
                        std::min( pCnt->Frm().Left(), rPt.X() ),
                   dY = std::max( pCnt->Frm().Top(), rPt.Y() ) -
                        std::min( pCnt->Frm().Top(), rPt.Y() );
-            BigInt dX1( dX ), dY1( dY );
-            dX1 *= dX1; dY1 *= dY1;
-            const sal_uLong nDiff = ::SqRt( dX1 + dY1 );
+            // square of the difference will do fine here
+            const sal_uInt64 nDiff = (dX * dX) + (dY * dY);
             if ( pCnt->Frm().Top() <= rPt.Y() )
             {
                 if ( nDiff < nDistance )
@@ -935,7 +934,7 @@ static sal_uLong lcl_FindCntDiff( const Point &rPt, const SwLayoutFrm *pLay,
 
         }  while ( pCnt && pLay->IsAnLower( pCnt ) );
     }
-    if ( nDistance == ULONG_MAX )
+    if (nDistance == SAL_MAX_UINT64)
     {   rpCnt = pNearest;
         return nNearest;
     }
@@ -955,26 +954,26 @@ static const SwCntntFrm * lcl_FindCnt( const Point &rPt, const SwCntntFrm *pCnt,
     //above the point.
     const SwCntntFrm  *pRet, *pNew;
     const SwLayoutFrm *pLay = pCnt->FindPageFrm();
-    sal_uLong nDist;
+    sal_uInt64 nDist; // not sure if a sal_Int32 would be enough?
 
     nDist = ::lcl_FindCntDiff( rPt, pLay, pNew, bBody, bFtn );
     if ( pNew )
         pRet = pNew;
     else
     {   pRet  = pCnt;
-        nDist = ULONG_MAX;
+        nDist = SAL_MAX_UINT64;
     }
     const SwCntntFrm *pNearest = pRet;
-    sal_uLong nNearest = nDist;
+    sal_uInt64 nNearest = nDist;
 
     if ( pLay )
     {
         const SwLayoutFrm *pPge = pLay;
-        sal_uLong nOldNew = ULONG_MAX;
+        sal_uInt64 nOldNew = SAL_MAX_UINT64;
         for ( sal_uInt16 i = 0; pPge->GetPrev() && (i < 3); ++i )
         {
             pPge = (SwLayoutFrm*)pPge->GetPrev();
-            const sal_uLong nNew = ::lcl_FindCntDiff( rPt, pPge, pNew, bBody, bFtn );
+            const sal_uInt64 nNew = ::lcl_FindCntDiff( rPt, pPge, pNew, bBody, bFtn );
             if ( nNew < nDist )
             {
                 if ( pNew->Frm().Top() <= rPt.Y() )
@@ -988,18 +987,18 @@ static const SwCntntFrm * lcl_FindCnt( const Point &rPt, const SwCntntFrm *pCnt,
                     nNearest = nNew;
                 }
             }
-            else if ( nOldNew != ULONG_MAX && nNew > nOldNew )
+            else if (nOldNew != SAL_MAX_UINT64 && nNew > nOldNew)
                 break;
             else
                 nOldNew = nNew;
 
         }
         pPge = pLay;
-        nOldNew = ULONG_MAX;
+        nOldNew = SAL_MAX_UINT64;
         for ( sal_uInt16 j = 0; pPge->GetNext() && (j < 3); ++j )
         {
             pPge = (SwLayoutFrm*)pPge->GetNext();
-            const sal_uLong nNew = ::lcl_FindCntDiff( rPt, pPge, pNew, bBody, bFtn );
+            const sal_uInt64 nNew = ::lcl_FindCntDiff( rPt, pPge, pNew, bBody, bFtn );
             if ( nNew < nDist )
             {
                 if ( pNew->Frm().Top() <= rPt.Y() )
@@ -1013,7 +1012,7 @@ static const SwCntntFrm * lcl_FindCnt( const Point &rPt, const SwCntntFrm *pCnt,
                     nNearest = nNew;
                 }
             }
-            else if ( nOldNew != ULONG_MAX && nNew > nOldNew )
+            else if (nOldNew != SAL_MAX_UINT64 && nNew > nOldNew)
                 break;
             else
                 nOldNew = nNew;
diff --git a/sw/source/core/layout/frmtool.cxx b/sw/source/core/layout/frmtool.cxx
index ac95bf87fa0e..631a60ce1538 100644
--- a/sw/source/core/layout/frmtool.cxx
+++ b/sw/source/core/layout/frmtool.cxx
@@ -17,7 +17,6 @@
  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  */
 
-#include <tools/bigint.hxx>
 #include <svx/svdmodel.hxx>
 #include <svx/svdpage.hxx>
 #include <editeng/brushitem.hxx>
@@ -2683,29 +2682,6 @@ void RestoreCntnt( SwFrm *pSav, SwLayoutFrm *pParent, SwFrm *pSibling, bool bGro
         pParent->Grow( nGrowVal );
 }
 
-/*************************************************************************
-|*
-|*  SqRt()              Berechnung der Quadratwurzel, damit die math.lib
-|*      nicht auch noch dazugelinkt werden muss.
-|*
-|*************************************************************************/
-
-sal_uLong SqRt( BigInt nX )
-{
-    BigInt nErg = 1;
-
-    if ( !nX.IsNeg() )
-    {
-        BigInt nOldErg = 1;
-        for ( int i = 0; i <= 5; i++ )
-        {
-            nErg = (nOldErg + (nX / nOldErg)) / BigInt(2);
-            nOldErg = nErg;
-        }
-    }
-    return nErg >= BigInt(SAL_MAX_UINT32) ? ULONG_MAX : (sal_uLong)nErg;
-}
-
 /*************************************************************************/
 
 SwPageFrm * InsertNewPage( SwPageDesc &rDesc, SwFrm *pUpper,
diff --git a/sw/source/core/layout/trvlfrm.cxx b/sw/source/core/layout/trvlfrm.cxx
index c67008d63df9..f33cfcb6422f 100644
--- a/sw/source/core/layout/trvlfrm.cxx
+++ b/sw/source/core/layout/trvlfrm.cxx
@@ -1142,17 +1142,15 @@ sal_Bool GetFrmInPage( const SwCntntFrm *pCnt, SwWhichPage fnWhichPage,
     }
 }
 
-sal_uLong CalcDiff( const Point &rPt1, const Point &rPt2 )
+static sal_uInt64 CalcDiff(const Point &rPt1, const Point &rPt2)
 {
     //Calculate the distance between the two points.
     //'delta' X^2 + 'delta'Y^2 = 'distance'^2
-    sal_uInt32 dX = std::max( rPt1.X(), rPt2.X() ) -
+    sal_uInt64 dX = std::max( rPt1.X(), rPt2.X() ) -
                std::min( rPt1.X(), rPt2.X() ),
           dY = std::max( rPt1.Y(), rPt2.Y() ) -
                std::min( rPt1.Y(), rPt2.Y() );
-    BigInt dX1( dX ), dY1( dY );
-    dX1 *= dX1; dY1 *= dY1;
-    return ::SqRt( dX1 + dY1 );
+    return (dX * dX) + (dY * dY);
 }
 
 /** Check if the point lies inside the page part in wich also the CntntFrame lies.
@@ -1209,7 +1207,7 @@ const SwCntntFrm *SwLayoutFrm::GetCntntPos( Point& rPoint,
     const SwLayoutFrm *pInside = NULL;
     sal_uInt16 nMaxPage = GetPhyPageNum() + (bDefaultExpand ? 1 : 0);
     Point aPoint = rPoint;
-    sal_uLong nDistance = ULONG_MAX;
+    sal_uInt64 nDistance = SAL_MAX_UINT64;
 
     while ( true )  //A loop to be sure we always find one.
     {
@@ -1262,7 +1260,7 @@ const SwCntntFrm *SwLayoutFrm::GetCntntPos( Point& rPoint,
                     if( !pInside || ( pInside->IsAnLower( pCntnt ) &&
                         ( !pCntnt->IsInFtn() || pInside->IsFtnContFrm() ) ) )
                     {
-                        const sal_uLong nDiff = ::CalcDiff( aCntntPoint, rPoint );
+                        const sal_uInt64 nDiff = ::CalcDiff(aCntntPoint, rPoint);
                         sal_Bool bBetter = nDiff < nDistance;  // This one is nearer
                         if( !pInside )
                         {
@@ -1406,7 +1404,7 @@ void SwPageFrm::GetCntntPosition( const Point &rPt, SwPosition &rPos ) const
 
     const SwCntntFrm *pAct = pCntnt;
     Point aAct       = rPt;
-    sal_uLong nDist      = ULONG_MAX;
+    sal_uLong nDist  = SAL_MAX_UINT64;
 
     while ( pCntnt )
     {
@@ -1433,7 +1431,7 @@ void SwPageFrm::GetCntntPosition( const Point &rPt, SwPosition &rPos ) const
         else if ( aCntFrm.Right() < rPt.X() )
             aPoint.X() = aCntFrm.Right();
 
-        const sal_uLong nDiff = ::CalcDiff( aPoint, rPt );
+        const sal_uInt64 nDiff = ::CalcDiff( aPoint, rPt );
         if ( nDiff < nDist )
         {
             aAct    = aPoint;