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/*************************************************************************
*
* 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 );
}
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