89 lines
3.5 KiB
C++
89 lines
3.5 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include <sal/config.h>
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#include <o3tl/unit_conversion.hxx>
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#include <vcl/outdev.hxx>
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#include <drawutil.hxx>
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#include <document.hxx>
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#include <viewdata.hxx>
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void ScDrawUtil::CalcScale( const ScDocument& rDoc, SCTAB nTab,
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SCCOL nStartCol, SCROW nStartRow, SCCOL nEndCol, SCROW nEndRow,
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const OutputDevice* pDev,
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const Fraction& rZoomX, const Fraction& rZoomY,
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double nPPTX, double nPPTY,
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Fraction& rScaleX, Fraction& rScaleY )
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{
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tools::Long nPixelX = 0;
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tools::Long nTwipsX = 0;
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tools::Long nPixelY = 0;
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tools::Long nTwipsY = 0;
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for (SCCOL i=nStartCol; i<nEndCol; i++)
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{
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sal_uInt16 nWidth = rDoc.GetColWidth(i,nTab);
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nTwipsX += static_cast<tools::Long>(nWidth);
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nPixelX += ScViewData::ToPixel( nWidth, nPPTX );
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}
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for (SCROW nRow = nStartRow; nRow <= nEndRow-1; ++nRow)
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{
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SCROW nLastRow = nRow;
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if (rDoc.RowHidden(nRow, nTab, nullptr, &nLastRow))
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{
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nRow = nLastRow;
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continue;
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}
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sal_uInt16 nHeight = rDoc.GetRowHeight(nRow, nTab);
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nTwipsY += static_cast<tools::Long>(nHeight);
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nPixelY += ScViewData::ToPixel(nHeight, nPPTY);
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}
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MapMode aHMMMode( MapUnit::Map100thMM, Point(), rZoomX, rZoomY );
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Point aPixelLog = pDev->PixelToLogic( Point( nPixelX,nPixelY ), aHMMMode );
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// Fraction(double) ctor can be used here (and avoid overflows of PixelLog * Zoom)
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// because ReduceInaccurate is called later anyway.
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if ( aPixelLog.X() && nTwipsX )
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rScaleX = Fraction( static_cast<double>(aPixelLog.X()) *
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static_cast<double>(rZoomX.GetNumerator()) /
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o3tl::convert<double>(nTwipsX, o3tl::Length::twip, o3tl::Length::mm100) /
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static_cast<double>(rZoomX.GetDenominator()) );
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else
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rScaleX = Fraction( 1, 1 );
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if ( aPixelLog.Y() && nTwipsY )
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rScaleY = Fraction( static_cast<double>(aPixelLog.Y()) *
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static_cast<double>(rZoomY.GetNumerator()) /
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o3tl::convert<double>(nTwipsY, o3tl::Length::twip, o3tl::Length::mm100) /
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static_cast<double>(rZoomY.GetDenominator()) );
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else
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rScaleY = Fraction( 1, 1 );
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// 25 bits of accuracy are needed to always hit the right part of
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// cells in the last rows (was 17 before 1M rows).
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rScaleX.ReduceInaccurate( 25 );
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rScaleY.ReduceInaccurate( 25 );
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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