[Libreoffice-commits] core.git: sc/source

Tomaž Vajngerl tomaz.vajngerl at collabora.co.uk
Mon Dec 4 07:08:51 UTC 2017


 sc/source/ui/inc/printfun.hxx  |  105 +++++++++++------
 sc/source/ui/unoobj/docuno.cxx |   27 +++-
 sc/source/ui/view/printfun.cxx |  241 +++++++++++++++++++++++------------------
 3 files changed, 228 insertions(+), 145 deletions(-)

New commits:
commit 5684e53b931eaaac658bc3246ae1c3249e252fdb
Author: Tomaž Vajngerl <tomaz.vajngerl at collabora.co.uk>
Date:   Sat Dec 2 01:17:15 2017 +0900

    Calculate print page ranges only when needed, cache in print state
    
    When printing or exporting PDF, we need to calculate the page
    print (cell) ranges for the current zoom level (document size).
    This is quite a expensive thing to do as you need to inspect
    the properties of individual cells.
    The calculation ideally needs to be done only once per printing
    request, but because of the rendering UNO API, this was done
    everytime ScPrintFunc was instantiated, which is for every page
    twice (once getRenderer is called and then when render is called).
    To fix this performance issue, the print page ranges need to be
    carried from one call to ScPrintFunc to the other. There already
    is a print state (ScPrintState) which is used for exactly that,
    but it didn't do this for print page ranges.
    With this, PDF export time in a test case decreased from 17 sec to
    around 3 sec.
    
    Change-Id: I97ade0e397960c5c98379e4bb28e57c5411ff757
    Reviewed-on: https://gerrit.libreoffice.org/45689
    Tested-by: Jenkins <ci at libreoffice.org>
    Reviewed-by: Tomaž Vajngerl <quikee at gmail.com>

diff --git a/sc/source/ui/inc/printfun.hxx b/sc/source/ui/inc/printfun.hxx
index 0bdd59cbb6eb..34b2ecc2159e 100644
--- a/sc/source/ui/inc/printfun.hxx
+++ b/sc/source/ui/inc/printfun.hxx
@@ -66,6 +66,60 @@ struct ScPrintHFParam
     const SvxShadowItem* pShadow;
 };
 
+class ScPageRowEntry
+{
+private:
+    SCROW                    nStartRow;
+    SCROW                    nEndRow;
+    size_t                   nPagesX;
+    std::vector<bool>        aHidden;
+    //!     Cache Number of really visible?
+
+public:
+            ScPageRowEntry()    { nStartRow = nEndRow = 0; nPagesX = 0; }
+
+            ScPageRowEntry(const ScPageRowEntry& r);
+    ScPageRowEntry& operator=(const ScPageRowEntry& r);
+
+    SCROW   GetStartRow() const     { return nStartRow; }
+    SCROW   GetEndRow() const       { return nEndRow; }
+    size_t  GetPagesX() const       { return nPagesX; }
+    void    SetStartRow(SCROW n)    { nStartRow = n; }
+    void    SetEndRow(SCROW n)      { nEndRow = n; }
+
+    void    SetPagesX(size_t nNew);
+    void    SetHidden(size_t nX);
+    bool    IsHidden(size_t nX) const;
+
+    size_t  CountVisible() const;
+};
+
+namespace sc
+{
+
+class PrintPageRanges
+{
+public:
+    PrintPageRanges();
+
+    std::vector<SCCOL> m_aPageEndX;
+    std::vector<SCROW> m_aPageEndY;
+    std::vector<ScPageRowEntry> m_aPageRows;
+
+    size_t m_nPagesX;
+    size_t m_nPagesY;
+    size_t m_nTotalY;
+
+    bool m_bCalculated;
+
+    void calculate(ScDocument* pDoc, ScPageTableParam const & rTableParam,
+                   ScPageAreaParam const & rAreaParam,
+                   SCROW nStartRow, SCROW nEndRow, SCCOL nStartCol, SCCOL nEndCol,
+                   SCTAB nPrintTab);
+};
+
+}
+
 struct ScPrintState                         //  Save Variables from ScPrintFunc
 {
     SCTAB   nPrintTab;
@@ -80,6 +134,14 @@ struct ScPrintState                         //  Save Variables from ScPrintFunc
     long    nTotalPages;
     long    nPageStart;
     long    nDocPages;
+
+    // Additional state of page ranges
+    bool bSavedStateRanges;
+    size_t nTotalY;
+    std::vector<SCCOL> aPageEndX;
+    std::vector<SCROW> aPageEndY;
+    std::vector<ScPageRowEntry> aPageRows;
+
     ScPrintState()
         : nPrintTab(0)
         , nStartCol(0)
@@ -93,36 +155,9 @@ struct ScPrintState                         //  Save Variables from ScPrintFunc
         , nTotalPages(0)
         , nPageStart(0)
         , nDocPages(0)
-    {
-    }
-};
-
-class ScPageRowEntry
-{
-private:
-    SCROW                    nStartRow;
-    SCROW                    nEndRow;
-    size_t                   nPagesX;
-    std::vector<bool>        aHidden;
-    //!     Cache Number of really visible?
-
-public:
-            ScPageRowEntry()    { nStartRow = nEndRow = 0; nPagesX = 0; }
-
-            ScPageRowEntry(const ScPageRowEntry& r);
-    ScPageRowEntry& operator=(const ScPageRowEntry& r);
-
-    SCROW   GetStartRow() const     { return nStartRow; }
-    SCROW   GetEndRow() const       { return nEndRow; }
-    size_t  GetPagesX() const       { return nPagesX; }
-    void    SetStartRow(SCROW n)    { nStartRow = n; }
-    void    SetEndRow(SCROW n)      { nEndRow = n; }
-
-    void    SetPagesX(size_t nNew);
-    void    SetHidden(size_t nX);
-    bool    IsHidden(size_t nX) const;
-
-    size_t  CountVisible() const;
+        , bSavedStateRanges(false)
+        , nTotalY(0)
+    {}
 };
 
 class ScPrintFunc
@@ -200,13 +235,7 @@ private:
     SCCOL               nEndCol;
     SCROW               nEndRow;
 
-    std::vector< SCCOL >            maPageEndX;
-    std::vector< SCROW >            maPageEndY;
-    std::vector< ScPageRowEntry>    maPageRows;
-
-    size_t              nPagesX;
-    size_t              nPagesY;
-    size_t              nTotalY;
+    sc::PrintPageRanges m_aRanges;
 
     ScHeaderEditEngine* pEditEngine;
     SfxItemSet*         pEditDefaults;
@@ -274,7 +303,7 @@ public:
 
     void            ResetBreaks( SCTAB nTab );
 
-    void            GetPrintState( ScPrintState& rState );
+    void            GetPrintState(ScPrintState& rState, bool bSavePageRanges = false);
     bool            GetLastSourceRange( ScRange& rRange ) const;
     sal_uInt16      GetLeftMargin() const{return nLeftMargin;}
     sal_uInt16      GetRightMargin() const{return nRightMargin;}
diff --git a/sc/source/ui/unoobj/docuno.cxx b/sc/source/ui/unoobj/docuno.cxx
index 933b29cb198a..0df42b9be2f1 100644
--- a/sc/source/ui/unoobj/docuno.cxx
+++ b/sc/source/ui/unoobj/docuno.cxx
@@ -1296,6 +1296,7 @@ void ScModelObj::Notify( SfxBroadcaster& rBC, const SfxHint& rHint )
         }
 
         DELETEZ( pPrintFuncCache );     // must be deleted because it has a pointer to the DocShell
+        m_pPrintState.reset();
     }
     else if ( nId == SfxHintId::DataChanged )
     {
@@ -1303,6 +1304,7 @@ void ScModelObj::Notify( SfxBroadcaster& rBC, const SfxHint& rHint )
         //  (if a broadcast is added to SetDrawModified, is has to be tested here, too)
 
         DELETEZ( pPrintFuncCache );
+        m_pPrintState.reset();
 
         // handle "OnCalculate" sheet events (search also for VBA event handlers)
         if ( pDocShell )
@@ -1660,6 +1662,8 @@ sal_Int32 SAL_CALL ScModelObj::getRendererCount(const uno::Any& aSelection,
     }
     sal_Int32 nPages = pPrintFuncCache->GetPageCount();
 
+    m_pPrintState.reset();
+
     sal_Int32 nSelectCount = nPages;
     if ( !aPagesStr.isEmpty() )
     {
@@ -1806,7 +1810,7 @@ uno::Sequence<beans::PropertyValue> SAL_CALL ScModelObj::getRenderer( sal_Int32
         if (!m_pPrintState)
         {
             m_pPrintState.reset(new ScPrintState());
-            pPrintFunc->GetPrintState(*m_pPrintState);
+            pPrintFunc->GetPrintState(*m_pPrintState, true);
         }
 
         aPageSize.Width = TwipsToHMM( aTwips.Width());
@@ -1929,11 +1933,16 @@ void SAL_CALL ScModelObj::render( sal_Int32 nSelRenderer, const uno::Any& aSelec
     //  pages of the same sheet
 
 
-    ScPrintFunc aFunc( pDev, pDocShell, nTab, pPrintFuncCache->GetFirstAttr(nTab), nTotalPages, pSelRange, &aStatus.GetOptions() );
-    aFunc.SetDrawView( aDrawViewKeeper.mpDrawView );
-    aFunc.SetRenderFlag( true );
+    std::unique_ptr<ScPrintFunc, o3tl::default_delete<ScPrintFunc>> pPrintFunc;
+    if (m_pPrintState)
+        pPrintFunc.reset(new ScPrintFunc(pDev, pDocShell, *m_pPrintState, &aStatus.GetOptions()));
+    else
+        pPrintFunc.reset(new ScPrintFunc(pDev, pDocShell, nTab, pPrintFuncCache->GetFirstAttr(nTab), nTotalPages, pSelRange, &aStatus.GetOptions()));
+
+    pPrintFunc->SetDrawView( aDrawViewKeeper.mpDrawView );
+    pPrintFunc->SetRenderFlag( true );
     if( aStatus.GetMode() == SC_PRINTSEL_RANGE_EXCLUSIVELY_OLE_AND_DRAW_OBJECTS )
-        aFunc.SetExclusivelyDrawOleAndDrawObjects();
+        pPrintFunc->SetExclusivelyDrawOleAndDrawObjects();
 
     Range aPageRange( nRenderer+1, nRenderer+1 );
     MultiSelection aPage( aPageRange );
@@ -1969,7 +1978,13 @@ void SAL_CALL ScModelObj::render( sal_Int32 nSelRenderer, const uno::Any& aSelec
         }
     }
 
-    (void)aFunc.DoPrint( aPage, nTabStart, nDisplayStart, true, nullptr );
+    (void)pPrintFunc->DoPrint( aPage, nTabStart, nDisplayStart, true, nullptr );
+
+    if (!m_pPrintState)
+    {
+        m_pPrintState.reset(new ScPrintState());
+        pPrintFunc->GetPrintState(*m_pPrintState, true);
+    }
 
     //  resolve the hyperlinks for PDF export
 
diff --git a/sc/source/ui/view/printfun.cxx b/sc/source/ui/view/printfun.cxx
index 44b0c9a32d7c..82d12a53b4f2 100644
--- a/sc/source/ui/view/printfun.cxx
+++ b/sc/source/ui/view/printfun.cxx
@@ -221,9 +221,6 @@ ScPrintFunc::ScPrintFunc( ScDocShell* pShell, SfxPrinter* pNewPrinter, SCTAB nTa
         mbHasPrintRange(true),
         nTabPages           ( 0 ),
         nTotalPages         ( 0 ),
-        nPagesX(0),
-        nPagesY(0),
-        nTotalY(0),
         pPageData           ( pData )
 {
     pDev = pPrinter.get();
@@ -241,9 +238,6 @@ ScPrintFunc::ScPrintFunc(ScDocShell* pShell, SfxPrinter* pNewPrinter,
         bPrintCurrentTable  ( false ),
         bMultiArea          ( false ),
         mbHasPrintRange(true),
-        nPagesX(0),
-        nPagesY(0),
-        nTotalY(0),
         pPageData           ( nullptr )
 {
     pDev = pPrinter.get();
@@ -254,14 +248,23 @@ ScPrintFunc::ScPrintFunc(ScDocShell* pShell, SfxPrinter* pNewPrinter,
     nEndCol     = rState.nEndCol;
     nEndRow     = rState.nEndRow;
     nZoom       = rState.nZoom;
-    nPagesX     = rState.nPagesX;
-    nPagesY     = rState.nPagesY;
+    m_aRanges.m_nPagesX = rState.nPagesX;
+    m_aRanges.m_nPagesY = rState.nPagesY;
     nTabPages   = rState.nTabPages;
     nTotalPages = rState.nTotalPages;
     nPageStart  = rState.nPageStart;
     nDocPages   = rState.nDocPages;
     bState      = true;
 
+    if (rState.bSavedStateRanges)
+    {
+        m_aRanges.m_nTotalY = rState.nTotalY;
+        m_aRanges.m_aPageEndX = rState.aPageEndX;
+        m_aRanges.m_aPageEndY = rState.aPageEndY;
+        m_aRanges.m_aPageRows = rState.aPageRows;
+        m_aRanges.m_bCalculated = true;
+    }
+
     aSrcOffset = pPrinter->PixelToLogic(pPrinter->GetPageOffsetPixel(), MapMode(MapUnit::Map100thMM));
     Construct( pOptions );
 }
@@ -283,9 +286,6 @@ ScPrintFunc::ScPrintFunc( OutputDevice* pOutDev, ScDocShell* pShell, SCTAB nTab,
         mbHasPrintRange(true),
         nTabPages           ( 0 ),
         nTotalPages         ( 0 ),
-        nPagesX(0),
-        nPagesY(0),
-        nTotalY(0),
         pPageData           ( nullptr )
 {
     pDev = pOutDev;
@@ -302,9 +302,6 @@ ScPrintFunc::ScPrintFunc( OutputDevice* pOutDev, ScDocShell* pShell,
         bPrintCurrentTable  ( false ),
         bMultiArea          ( false ),
         mbHasPrintRange(true),
-        nPagesX(0),
-        nPagesY(0),
-        nTotalY(0),
         pPageData           ( nullptr )
 {
     pDev = pOutDev;
@@ -315,18 +312,27 @@ ScPrintFunc::ScPrintFunc( OutputDevice* pOutDev, ScDocShell* pShell,
     nEndCol     = rState.nEndCol;
     nEndRow     = rState.nEndRow;
     nZoom       = rState.nZoom;
-    nPagesX     = rState.nPagesX;
-    nPagesY     = rState.nPagesY;
+    m_aRanges.m_nPagesX = rState.nPagesX;
+    m_aRanges.m_nPagesY = rState.nPagesY;
     nTabPages   = rState.nTabPages;
     nTotalPages = rState.nTotalPages;
     nPageStart  = rState.nPageStart;
     nDocPages   = rState.nDocPages;
     bState      = true;
 
+    if (rState.bSavedStateRanges)
+    {
+        m_aRanges.m_nTotalY = rState.nTotalY;
+        m_aRanges.m_aPageEndX = rState.aPageEndX;
+        m_aRanges.m_aPageEndY = rState.aPageEndY;
+        m_aRanges.m_aPageRows = rState.aPageRows;
+        m_aRanges.m_bCalculated = true;
+    }
+
     Construct( pOptions );
 }
 
-void ScPrintFunc::GetPrintState( ScPrintState& rState )
+void ScPrintFunc::GetPrintState(ScPrintState& rState,  bool bSavePageRanges)
 {
     rState.nPrintTab    = nPrintTab;
     rState.nStartCol    = nStartCol;
@@ -334,12 +340,20 @@ void ScPrintFunc::GetPrintState( ScPrintState& rState )
     rState.nEndCol      = nEndCol;
     rState.nEndRow      = nEndRow;
     rState.nZoom        = nZoom;
-    rState.nPagesX      = nPagesX;
-    rState.nPagesY      = nPagesY;
+    rState.nPagesX      = m_aRanges.m_nPagesX;
+    rState.nPagesY      = m_aRanges.m_nPagesY;
     rState.nTabPages    = nTabPages;
     rState.nTotalPages  = nTotalPages;
     rState.nPageStart   = nPageStart;
     rState.nDocPages    = nDocPages;
+    if (bSavePageRanges)
+    {
+        rState.bSavedStateRanges = true;
+        rState.nTotalY = m_aRanges.m_nTotalY;
+        rState.aPageEndX = m_aRanges.m_aPageEndX;
+        rState.aPageEndY = m_aRanges.m_aPageEndY;
+        rState.aPageRows = m_aRanges.m_aPageRows;
+    }
 }
 
 bool ScPrintFunc::GetLastSourceRange( ScRange& rRange ) const
@@ -358,23 +372,23 @@ void ScPrintFunc::FillPageData()
         rData.SetPrintRange( ScRange( nStartCol, nStartRow, nPrintTab,
                                         nEndCol, nEndRow, nPrintTab ) );
         // #i123672#
-        if(maPageEndX.empty())
+        if(m_aRanges.m_aPageEndX.empty())
         {
             OSL_ENSURE(false, "vector access error for maPageEndX (!)");
         }
         else
         {
-            rData.SetPagesX( nPagesX, &maPageEndX[0]);
+            rData.SetPagesX( m_aRanges.m_nPagesX, &m_aRanges.m_aPageEndX[0]);
         }
 
         // #i123672#
-        if(maPageEndY.empty())
+        if(m_aRanges.m_aPageEndY.empty())
         {
             OSL_ENSURE(false, "vector access error for maPageEndY (!)");
         }
         else
         {
-            rData.SetPagesY( nTotalY, &maPageEndY[0]);
+            rData.SetPagesY( m_aRanges.m_nTotalY, &m_aRanges.m_aPageEndY[0]);
         }
 
         //  Settings
@@ -2463,13 +2477,13 @@ long ScPrintFunc::CountPages()                          // sets also nPagesX, nP
             {
                 CalcZoom(i);
                 if ( aTableParam.bSkipEmpty )
-                    for (nY=0; nY<nPagesY; nY++)
+                    for (nY=0; nY< m_aRanges.m_nPagesY; nY++)
                     {
-                        OSL_ENSURE(nY < maPageRows.size(), "vector access error for maPageRows (!)");
-                        nPages += maPageRows[nY].CountVisible();
+                        OSL_ENSURE(nY < m_aRanges.m_aPageRows.size(), "vector access error for aPageRows");
+                        nPages += m_aRanges.m_aPageRows[nY].CountVisible();
                     }
                 else
-                    nPages += ((long) nPagesX) * nPagesY;
+                    nPages += ((long) m_aRanges.m_nPagesX) * m_aRanges.m_nPagesY;
                 if ( pPageData )
                     FillPageData();
             }
@@ -2478,13 +2492,13 @@ long ScPrintFunc::CountPages()                          // sets also nPagesX, nP
         {
             CalcZoom(RANGENO_NORANGE);                      // calculate Zoom
             if ( aTableParam.bSkipEmpty )
-                for (nY=0; nY<nPagesY; nY++)
+                for (nY=0; nY<m_aRanges.m_nPagesY; nY++)
                 {
-                    OSL_ENSURE(nY < maPageRows.size(), "vector access error for maPageRows (!)");
-                    nPages += maPageRows[nY].CountVisible();
+                    OSL_ENSURE(nY < m_aRanges.m_aPageRows.size(), "vector access error for aPageRows");
+                    nPages += m_aRanges.m_aPageRows[nY].CountVisible();
                 }
             else
-                nPages += ((long) nPagesX) * nPagesY;
+                nPages += ((long) m_aRanges.m_nPagesX) * m_aRanges.m_nPagesY;
             if ( pPageData )
                 FillPageData();
         }
@@ -2492,7 +2506,7 @@ long ScPrintFunc::CountPages()                          // sets also nPagesX, nP
     }
     else
     {
-        nPagesX = nPagesY = nTotalY = 0;
+        m_aRanges.m_nPagesX = m_aRanges.m_nPagesY = m_aRanges.m_nTotalY = 0;
         return 0;
     }
 }
@@ -2671,16 +2685,16 @@ long ScPrintFunc::DoPrint( const MultiSelection& rPageRanges,
         if (aTableParam.bTopDown)                           // top-bottom
         {
             nX1 = nStartCol;
-            for (nCountX=0; nCountX<nPagesX; nCountX++)
+            for (nCountX=0; nCountX<m_aRanges.m_nPagesX; nCountX++)
             {
-                OSL_ENSURE(nCountX < maPageEndX.size(), "vector access error for maPageEndX (!)");
-                nX2 = maPageEndX[nCountX];
-                for (nCountY=0; nCountY<nPagesY; nCountY++)
+                OSL_ENSURE(nCountX < m_aRanges.m_aPageEndX.size(), "vector access error for aPageEndX (!)");
+                nX2 = m_aRanges.m_aPageEndX[nCountX];
+                for (nCountY=0; nCountY<m_aRanges.m_nPagesY; nCountY++)
                 {
-                    OSL_ENSURE(nCountY < maPageRows.size(), "vector access error for maPageRows (!)");
-                    nY1 = maPageRows[nCountY].GetStartRow();
-                    nY2 = maPageRows[nCountY].GetEndRow();
-                    if ( !aTableParam.bSkipEmpty || !maPageRows[nCountY].IsHidden(nCountX) )
+                    OSL_ENSURE(nCountY < m_aRanges.m_aPageRows.size(), "vector access error for aPageRows (!)");
+                    nY1 = m_aRanges.m_aPageRows[nCountY].GetStartRow();
+                    nY2 = m_aRanges.m_aPageRows[nCountY].GetEndRow();
+                    if ( !aTableParam.bSkipEmpty || !m_aRanges.m_aPageRows[nCountY].IsHidden(nCountX) )
                     {
                         if ( rPageRanges.IsSelected( nPageNo+nStartPage+1 ) )
                         {
@@ -2696,17 +2710,17 @@ long ScPrintFunc::DoPrint( const MultiSelection& rPageRanges,
         }
         else                                                // left to right
         {
-            for (nCountY=0; nCountY<nPagesY; nCountY++)
+            for (nCountY=0; nCountY<m_aRanges.m_nPagesY; nCountY++)
             {
-                OSL_ENSURE(nCountY < maPageRows.size(), "vector access error for maPageRows (!)");
-                nY1 = maPageRows[nCountY].GetStartRow();
-                nY2 = maPageRows[nCountY].GetEndRow();
+                OSL_ENSURE(nCountY < m_aRanges.m_aPageRows.size(), "vector access error for aPageRows");
+                nY1 = m_aRanges.m_aPageRows[nCountY].GetStartRow();
+                nY2 = m_aRanges.m_aPageRows[nCountY].GetEndRow();
                 nX1 = nStartCol;
-                for (nCountX=0; nCountX<nPagesX; nCountX++)
+                for (nCountX=0; nCountX<m_aRanges.m_nPagesX; nCountX++)
                 {
-                    OSL_ENSURE(nCountX < maPageEndX.size(), "vector access error for maPageEndX (!)");
-                    nX2 = maPageEndX[nCountX];
-                    if ( !aTableParam.bSkipEmpty || !maPageRows[nCountY].IsHidden(nCountX) )
+                    OSL_ENSURE(nCountX < m_aRanges.m_aPageEndX.size(), "vector access error for aPageEndX");
+                    nX2 = m_aRanges.m_aPageEndX[nCountX];
+                    if ( !aTableParam.bSkipEmpty || !m_aRanges.m_aPageRows[nCountY].IsHidden(nCountX) )
                     {
                         if ( rPageRanges.IsSelected( nPageNo+nStartPage+1 ) )
                         {
@@ -2772,7 +2786,7 @@ void ScPrintFunc::CalcZoom( sal_uInt16 nRangeNo )                       // calcu
     if (!AdjustPrintArea(false))                        // empty
     {
         nZoom = 100;
-        nPagesX = nPagesY = nTotalY = 0;
+        m_aRanges.m_nPagesX = m_aRanges.m_nPagesY = m_aRanges.m_nTotalY = 0;
         return;
     }
 
@@ -2805,7 +2819,7 @@ void ScPrintFunc::CalcZoom( sal_uInt16 nRangeNo )                       // calcu
                 break;
 
             CalcPages();
-            bool bFitsPage = (nPagesX * nPagesY <= nPagesToFit);
+            bool bFitsPage = (m_aRanges.m_nPagesX * m_aRanges.m_nPagesY <= nPagesToFit);
 
             if (bFitsPage)
             {
@@ -2864,7 +2878,7 @@ void ScPrintFunc::CalcZoom( sal_uInt16 nRangeNo )                       // calcu
                 break;
 
             CalcPages();
-            bool bFitsPage = ((!nW || (nPagesX <= nW)) && (!nH || (nPagesY <= nH)));
+            bool bFitsPage = ((!nW || (m_aRanges.m_nPagesX <= nW)) && (!nH || (m_aRanges.m_nPagesY <= nH)));
 
             if (bFitsPage)
             {
@@ -2972,7 +2986,7 @@ static void lcl_SetHidden( const ScDocument* pDoc, SCTAB nPrintTab, ScPageRowEnt
 
     for (size_t i=0; i<nPagesX; i++)
     {
-        OSL_ENSURE(i < rPageEndX.size(), "vector access error for maPageEndX (!)");
+        OSL_ENSURE(i < rPageEndX.size(), "vector access error for aPageEndX");
         SCCOL nEndCol = rPageEndX[i];
         if ( pDoc->IsPrintEmpty( nPrintTab, nStartCol, nStartRow, nEndCol, nEndRow,
                                     bLeftIsEmpty, &aTempRange, &aTempRect ) )
@@ -2989,64 +3003,88 @@ static void lcl_SetHidden( const ScDocument* pDoc, SCTAB nPrintTab, ScPageRowEnt
 
 void ScPrintFunc::CalcPages()               // calculates aPageRect and pages from nZoom
 {
+    pDoc->SetPageSize(nPrintTab, GetDocPageSize());
+
+    m_aRanges.calculate(pDoc, aTableParam, aAreaParam, nStartRow, nEndRow, nStartCol, nEndCol, nPrintTab);
+}
+
+namespace sc
+{
+
+PrintPageRanges::PrintPageRanges()
+    : m_nPagesX(0)
+    , m_nPagesY(0)
+    , m_nTotalY(0)
+    , m_bCalculated(false)
+{}
+
+void PrintPageRanges::calculate(ScDocument* pDoc, ScPageTableParam const & rTableParam,
+                                ScPageAreaParam const & rAreaParam,
+                                SCROW nStartRow, SCROW nEndRow,
+                                SCCOL nStartCol, SCCOL nEndCol,
+                                SCTAB nPrintTab)
+{
+    // Already calculated?
+    if (m_bCalculated)
+        return;
+
     // #i123672# use dynamic mem to react on size changes
-    if (maPageEndX.size() < MAXCOL+1)
+    if (m_aPageEndX.size() < MAXCOL+1)
     {
-        maPageEndX.resize(MAXCOL+1, SCCOL());
+        m_aPageEndX.resize(MAXCOL+1, SCCOL());
     }
 
-    pDoc->SetPageSize( nPrintTab, GetDocPageSize() );
-    if (aAreaParam.bPrintArea)
+    if (rAreaParam.bPrintArea)
     {
-        ScRange aRange( nStartCol, nStartRow, nPrintTab, nEndCol, nEndRow, nPrintTab );
-        pDoc->UpdatePageBreaks( nPrintTab, &aRange );
+        ScRange aRange(nStartCol, nStartRow, nPrintTab, nEndCol, nEndRow, nPrintTab);
+        pDoc->UpdatePageBreaks(nPrintTab, &aRange);
     }
     else
     {
-        pDoc->UpdatePageBreaks( nPrintTab );      // else, end is marked
+        pDoc->UpdatePageBreaks(nPrintTab); // else, end is marked
     }
 
-    const size_t nRealCnt = nEndRow-nStartRow+1;
+    const size_t nRealCnt = nEndRow - nStartRow + 1;
 
     // #i123672# use dynamic mem to react on size changes
-    if (maPageEndY.size() < nRealCnt+1)
+    if (m_aPageEndY.size() < nRealCnt+1)
     {
-        maPageEndY.resize(nRealCnt+1, SCROW());
+        m_aPageEndY.resize(nRealCnt + 1, SCROW());
     }
 
     // #i123672# use dynamic mem to react on size changes
-    if (maPageRows.size() < nRealCnt+1)
+    if (m_aPageRows.size() < nRealCnt+1)
     {
-        maPageRows.resize(nRealCnt+1, ScPageRowEntry());
+        m_aPageRows.resize(nRealCnt+1, ScPageRowEntry());
     }
 
     //  Page alignment/splitting after breaks in Col/RowFlags
     //  Of several breaks in a hidden area, only one counts.
 
-    nPagesX = 0;
-    nPagesY = 0;
-    nTotalY = 0;
+    m_nPagesX = 0;
+    m_nPagesY = 0;
+    m_nTotalY = 0;
 
     bool bVisCol = false;
-    for (SCCOL i=nStartCol; i<=nEndCol; i++)
+    for (SCCOL i = nStartCol; i <= nEndCol; i++)
     {
         bool bHidden = pDoc->ColHidden(i, nPrintTab);
         bool bPageBreak(pDoc->HasColBreak(i, nPrintTab) & ScBreakType::Page);
-        if ( i>nStartCol && bVisCol && bPageBreak )
+        if (i > nStartCol && bVisCol && bPageBreak)
         {
-            OSL_ENSURE(nPagesX < maPageEndX.size(), "vector access error for maPageEndX (!)");
-            maPageEndX[nPagesX] = i-1;
-            ++nPagesX;
+            OSL_ENSURE(m_nPagesX < m_aPageEndX.size(), "vector access error for aPageEndX");
+            m_aPageEndX[m_nPagesX] = i-1;
+            ++m_nPagesX;
             bVisCol = false;
         }
         if (!bHidden)
             bVisCol = true;
     }
-    if (bVisCol)    // also at the end, no empty pages
+    if (bVisCol) // also at the end, no empty pages
     {
-        OSL_ENSURE(nPagesX < maPageEndX.size(), "vector access error for maPageEndX (!)");
-        maPageEndX[nPagesX] = nEndCol;
-        ++nPagesX;
+        OSL_ENSURE(m_nPagesX < m_aPageEndX.size(), "vector access error for aPageEndX");
+        m_aPageEndX[m_nPagesX] = nEndCol;
+        ++m_nPagesX;
     }
 
     bool bVisRow = false;
@@ -3065,22 +3103,21 @@ void ScPrintFunc::CalcPages()               // calculates aPageRect and pages fr
         if (bPageBreak)
             nNextPageBreak = pRowBreakIter->next();
 
-        if (nRow > nStartRow && bVisRow && bPageBreak )
+        if (nRow > nStartRow && bVisRow && bPageBreak)
         {
-            OSL_ENSURE(nTotalY < maPageEndY.size(), "vector access error for maPageEndY (!)");
-            maPageEndY[nTotalY] = nRow-1;
-            ++nTotalY;
+            OSL_ENSURE(m_nTotalY < m_aPageEndY.size(), "vector access error for rPageEndY");
+            m_aPageEndY[m_nTotalY] = nRow - 1;
+            ++m_nTotalY;
 
-            if ( !aTableParam.bSkipEmpty ||
-                    !pDoc->IsPrintEmpty( nPrintTab, nStartCol, nPageStartRow, nEndCol, nRow-1 ) )
+            if (!rTableParam.bSkipEmpty || !pDoc->IsPrintEmpty(nPrintTab, nStartCol, nPageStartRow, nEndCol, nRow-1))
             {
-                OSL_ENSURE(nPagesY < maPageRows.size(), "vector access error for maPageRows (!)");
-                maPageRows[nPagesY].SetStartRow( nPageStartRow );
-                maPageRows[nPagesY].SetEndRow( nRow-1 );
-                maPageRows[nPagesY].SetPagesX( nPagesX );
-                if (aTableParam.bSkipEmpty)
-                    lcl_SetHidden( pDoc, nPrintTab, maPageRows[nPagesY], nStartCol, maPageEndX );
-                ++nPagesY;
+                OSL_ENSURE(m_nPagesY < m_aPageRows.size(), "vector access error for rPageRows");
+                m_aPageRows[m_nPagesY].SetStartRow(nPageStartRow);
+                m_aPageRows[m_nPagesY].SetEndRow(nRow - 1);
+                m_aPageRows[m_nPagesY].SetPagesX(m_nPagesX);
+                if (rTableParam.bSkipEmpty)
+                    lcl_SetHidden(pDoc, nPrintTab, m_aPageRows[m_nPagesY], nStartCol, m_aPageEndX);
+                ++m_nPagesY;
             }
 
             nPageStartRow = nRow;
@@ -3108,22 +3145,24 @@ void ScPrintFunc::CalcPages()               // calculates aPageRect and pages fr
 
     if (bVisRow)
     {
-        OSL_ENSURE(nTotalY < maPageEndY.size(), "vector access error for maPageEndY (!)");
-        maPageEndY[nTotalY] = nEndRow;
-        ++nTotalY;
+        OSL_ENSURE(m_nTotalY < m_aPageEndY.size(), "vector access error for maPageEndY");
+        m_aPageEndY[m_nTotalY] = nEndRow;
+        ++m_nTotalY;
 
-        if ( !aTableParam.bSkipEmpty ||
-                !pDoc->IsPrintEmpty( nPrintTab, nStartCol, nPageStartRow, nEndCol, nEndRow ) )
+        if (!rTableParam.bSkipEmpty || !pDoc->IsPrintEmpty(nPrintTab, nStartCol, nPageStartRow, nEndCol, nEndRow))
         {
-            OSL_ENSURE(nPagesY < maPageRows.size(), "vector access error for maPageRows (!)");
-            maPageRows[nPagesY].SetStartRow( nPageStartRow );
-            maPageRows[nPagesY].SetEndRow( nEndRow );
-            maPageRows[nPagesY].SetPagesX( nPagesX );
-            if (aTableParam.bSkipEmpty)
-                lcl_SetHidden( pDoc, nPrintTab, maPageRows[nPagesY], nStartCol, maPageEndX );
-            ++nPagesY;
+            OSL_ENSURE(m_nPagesY < m_aPageRows.size(), "vector access error for maPageRows");
+            m_aPageRows[m_nPagesY].SetStartRow(nPageStartRow);
+            m_aPageRows[m_nPagesY].SetEndRow(nEndRow);
+            m_aPageRows[m_nPagesY].SetPagesX(m_nPagesX);
+            if (rTableParam.bSkipEmpty)
+                lcl_SetHidden(pDoc, nPrintTab, m_aPageRows[m_nPagesY], nStartCol, m_aPageEndX);
+            ++m_nPagesY;
         }
     }
+
+    m_bCalculated = true;
 }
 
+} // end namespace sc
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */


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