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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include <sal/config.h>
#include <o3tl/unit_conversion.hxx>
#include <vcl/outdev.hxx>
#include <drawutil.hxx>
#include <document.hxx>
#include <viewdata.hxx>
void ScDrawUtil::CalcScale( const ScDocument& rDoc, SCTAB nTab,
SCCOL nStartCol, SCROW nStartRow, SCCOL nEndCol, SCROW nEndRow,
const OutputDevice* pDev,
const Fraction& rZoomX, const Fraction& rZoomY,
double nPPTX, double nPPTY,
Fraction& rScaleX, Fraction& rScaleY )
{
tools::Long nPixelX = 0;
tools::Long nTwipsX = 0;
tools::Long nPixelY = 0;
tools::Long nTwipsY = 0;
for (SCCOL i=nStartCol; i<nEndCol; i++)
{
sal_uInt16 nWidth = rDoc.GetColWidth(i,nTab);
nTwipsX += static_cast<tools::Long>(nWidth);
nPixelX += ScViewData::ToPixel( nWidth, nPPTX );
}
for (SCROW nRow = nStartRow; nRow <= nEndRow-1; ++nRow)
{
SCROW nLastRow = nRow;
if (rDoc.RowHidden(nRow, nTab, nullptr, &nLastRow))
{
nRow = nLastRow;
continue;
}
sal_uInt16 nHeight = rDoc.GetRowHeight(nRow, nTab);
nTwipsY += static_cast<tools::Long>(nHeight);
nPixelY += ScViewData::ToPixel(nHeight, nPPTY);
}
MapMode aHMMMode( MapUnit::Map100thMM, 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( static_cast<double>(aPixelLog.X()) *
static_cast<double>(rZoomX.GetNumerator()) /
o3tl::convert<double>(nTwipsX, o3tl::Length::twip, o3tl::Length::mm100) /
static_cast<double>(rZoomX.GetDenominator()) );
else
rScaleX = Fraction( 1, 1 );
if ( aPixelLog.Y() && nTwipsY )
rScaleY = Fraction( static_cast<double>(aPixelLog.Y()) *
static_cast<double>(rZoomY.GetNumerator()) /
o3tl::convert<double>(nTwipsY, o3tl::Length::twip, o3tl::Length::mm100) /
static_cast<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 );
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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