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Diffstat (limited to 'sc/source/ui/view/drawutil.cxx')
-rw-r--r-- | sc/source/ui/view/drawutil.cxx | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/sc/source/ui/view/drawutil.cxx b/sc/source/ui/view/drawutil.cxx new file mode 100644 index 000000000000..ba250767c169 --- /dev/null +++ b/sc/source/ui/view/drawutil.cxx @@ -0,0 +1,116 @@ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ + +// MARKER(update_precomp.py): autogen include statement, do not remove +#include "precompiled_sc.hxx" + + + +// INCLUDE --------------------------------------------------------------- + +#include <vcl/outdev.hxx> + +#include "drawutil.hxx" +#include "document.hxx" +#include "global.hxx" +#include "viewdata.hxx" + +// STATIC DATA ----------------------------------------------------------- + +// ----------------------------------------------------------------------- + + +inline Fraction MakeFraction( long nA, long nB ) +{ + return ( nA && nB ) ? Fraction(nA,nB) : Fraction(1,1); +} + +void ScDrawUtil::CalcScale( ScDocument* pDoc, SCTAB nTab, + SCCOL nStartCol, SCROW nStartRow, SCCOL nEndCol, SCROW nEndRow, + OutputDevice* pDev, + const Fraction& rZoomX, const Fraction& rZoomY, + double nPPTX, double nPPTY, + Fraction& rScaleX, Fraction& rScaleY ) +{ + long nPixelX = 0; + long nTwipsX = 0; + long nPixelY = 0; + long nTwipsY = 0; + for (SCCOL i=nStartCol; i<nEndCol; i++) + { + USHORT nWidth = pDoc->GetColWidth(i,nTab); + nTwipsX += (long) nWidth; + nPixelX += ScViewData::ToPixel( nWidth, nPPTX ); + } + + for (SCROW nRow = nStartRow; nRow <= nEndRow-1; ++nRow) + { + SCROW nLastRow = nRow; + if (pDoc->RowHidden(nRow, nTab, NULL, &nLastRow)) + { + nRow = nLastRow; + continue; + } + + USHORT nHeight = pDoc->GetRowHeight(nRow, nTab); + nTwipsY += static_cast<long>(nHeight); + nPixelY += ScViewData::ToPixel(nHeight, nPPTY); + } + + MapMode aHMMMode( MAP_100TH_MM, Point(), rZoomX, rZoomY ); + Point aPixelLog = pDev->PixelToLogic( Point( nPixelX,nPixelY ), aHMMMode ); + + // Fraction(double) ctor can be used here (and avoid overflows of PixelLog * Zoom) + // because ReduceInaccurate is called later anyway. + + if ( aPixelLog.X() && nTwipsX ) + rScaleX = Fraction( ((double)aPixelLog.X()) * + ((double)rZoomX.GetNumerator()) / + ((double)nTwipsX) / + ((double)HMM_PER_TWIPS) / + ((double)rZoomX.GetDenominator()) ); + else + rScaleX = Fraction( 1, 1 ); + + if ( aPixelLog.Y() && nTwipsY ) + rScaleY = Fraction( ((double)aPixelLog.Y()) * + ((double)rZoomY.GetNumerator()) / + ((double)nTwipsY) / + ((double)HMM_PER_TWIPS) / + ((double)rZoomY.GetDenominator()) ); + else + rScaleY = Fraction( 1, 1 ); + + // 25 bits of accuracy are needed to always hit the right part of + // cells in the last rows (was 17 before 1M rows). + rScaleX.ReduceInaccurate( 25 ); + rScaleY.ReduceInaccurate( 25 ); +} + + + + |