1 /************************************************************************* 2 * 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * Copyright 2000, 2010 Oracle and/or its affiliates. 6 * 7 * OpenOffice.org - a multi-platform office productivity suite 8 * 9 * This file is part of OpenOffice.org. 10 * 11 * OpenOffice.org is free software: you can redistribute it and/or modify 12 * it under the terms of the GNU Lesser General Public License version 3 13 * only, as published by the Free Software Foundation. 14 * 15 * OpenOffice.org is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18 * GNU Lesser General Public License version 3 for more details 19 * (a copy is included in the LICENSE file that accompanied this code). 20 * 21 * You should have received a copy of the GNU Lesser General Public License 22 * version 3 along with OpenOffice.org. If not, see 23 * <http://www.openoffice.org/license.html> 24 * for a copy of the LGPLv3 License. 25 * 26 ************************************************************************/ 27 28 // MARKER(update_precomp.py): autogen include statement, do not remove 29 #include "precompiled_sc.hxx" 30 31 32 33 // INCLUDE --------------------------------------------------------------- 34 35 #include <vcl/outdev.hxx> 36 37 #include "drawutil.hxx" 38 #include "document.hxx" 39 #include "global.hxx" 40 #include "viewdata.hxx" 41 42 // STATIC DATA ----------------------------------------------------------- 43 44 // ----------------------------------------------------------------------- 45 46 47 inline Fraction MakeFraction( long nA, long nB ) 48 { 49 return ( nA && nB ) ? Fraction(nA,nB) : Fraction(1,1); 50 } 51 52 void ScDrawUtil::CalcScale( ScDocument* pDoc, SCTAB nTab, 53 SCCOL nStartCol, SCROW nStartRow, SCCOL nEndCol, SCROW nEndRow, 54 OutputDevice* pDev, 55 const Fraction& rZoomX, const Fraction& rZoomY, 56 double nPPTX, double nPPTY, 57 Fraction& rScaleX, Fraction& rScaleY ) 58 { 59 long nPixelX = 0; 60 long nTwipsX = 0; 61 long nPixelY = 0; 62 long nTwipsY = 0; 63 for (SCCOL i=nStartCol; i<nEndCol; i++) 64 { 65 sal_uInt16 nWidth = pDoc->GetColWidth(i,nTab); 66 nTwipsX += (long) nWidth; 67 nPixelX += ScViewData::ToPixel( nWidth, nPPTX ); 68 } 69 70 for (SCROW nRow = nStartRow; nRow <= nEndRow-1; ++nRow) 71 { 72 SCROW nLastRow = nRow; 73 if (pDoc->RowHidden(nRow, nTab, NULL, &nLastRow)) 74 { 75 nRow = nLastRow; 76 continue; 77 } 78 79 sal_uInt16 nHeight = pDoc->GetRowHeight(nRow, nTab); 80 nTwipsY += static_cast<long>(nHeight); 81 nPixelY += ScViewData::ToPixel(nHeight, nPPTY); 82 } 83 84 // #i116848# To get a large-enough number for PixelToLogic, multiply the integer values 85 // instead of using a larger number of rows 86 long nMultiply = 2000000 / nTwipsY; 87 if ( nMultiply > 1 ) 88 { 89 nTwipsY *= nMultiply; 90 nPixelY *= nMultiply; 91 } 92 93 MapMode aHMMMode( MAP_100TH_MM, Point(), rZoomX, rZoomY ); 94 Point aPixelLog = pDev->PixelToLogic( Point( nPixelX,nPixelY ), aHMMMode ); 95 96 // Fraction(double) ctor can be used here (and avoid overflows of PixelLog * Zoom) 97 // because ReduceInaccurate is called later anyway. 98 99 if ( aPixelLog.X() && nTwipsX ) 100 rScaleX = Fraction( ((double)aPixelLog.X()) * 101 ((double)rZoomX.GetNumerator()) / 102 ((double)nTwipsX) / 103 ((double)HMM_PER_TWIPS) / 104 ((double)rZoomX.GetDenominator()) ); 105 else 106 rScaleX = Fraction( 1, 1 ); 107 108 if ( aPixelLog.Y() && nTwipsY ) 109 rScaleY = Fraction( ((double)aPixelLog.Y()) * 110 ((double)rZoomY.GetNumerator()) / 111 ((double)nTwipsY) / 112 ((double)HMM_PER_TWIPS) / 113 ((double)rZoomY.GetDenominator()) ); 114 else 115 rScaleY = Fraction( 1, 1 ); 116 117 // 25 bits of accuracy are needed to always hit the right part of 118 // cells in the last rows (was 17 before 1M rows). 119 rScaleX.ReduceInaccurate( 25 ); 120 rScaleY.ReduceInaccurate( 25 ); 121 } 122 123 124 125 126