1 /************************************************************** 2 * 3 * Licensed to the Apache Software Foundation (ASF) under one 4 * or more contributor license agreements. See the NOTICE file 5 * distributed with this work for additional information 6 * regarding copyright ownership. The ASF licenses this file 7 * to you under the Apache License, Version 2.0 (the 8 * "License"); you may not use this file except in compliance 9 * with the License. You may obtain a copy of the License at 10 * 11 * http://www.apache.org/licenses/LICENSE-2.0 12 * 13 * Unless required by applicable law or agreed to in writing, 14 * software distributed under the License is distributed on an 15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16 * KIND, either express or implied. See the License for the 17 * specific language governing permissions and limitations 18 * under the License. 19 * 20 *************************************************************/ 21 22 23 24 // MARKER(update_precomp.py): autogen include statement, do not remove 25 #include "precompiled_sc.hxx" 26 27 28 29 // INCLUDE --------------------------------------------------------------- 30 31 #include <vcl/outdev.hxx> 32 33 #include "drawutil.hxx" 34 #include "document.hxx" 35 #include "global.hxx" 36 #include "viewdata.hxx" 37 38 // STATIC DATA ----------------------------------------------------------- 39 40 // ----------------------------------------------------------------------- 41 42 43 inline Fraction MakeFraction( long nA, long nB ) 44 { 45 return ( nA && nB ) ? Fraction(nA,nB) : Fraction(1,1); 46 } 47 48 void ScDrawUtil::CalcScale( ScDocument* pDoc, SCTAB nTab, 49 SCCOL nStartCol, SCROW nStartRow, SCCOL nEndCol, SCROW nEndRow, 50 OutputDevice* pDev, 51 const Fraction& rZoomX, const Fraction& rZoomY, 52 double nPPTX, double nPPTY, 53 Fraction& rScaleX, Fraction& rScaleY ) 54 { 55 long nPixelX = 0; 56 long nTwipsX = 0; 57 long nPixelY = 0; 58 long nTwipsY = 0; 59 for (SCCOL i=nStartCol; i<nEndCol; i++) 60 { 61 sal_uInt16 nWidth = pDoc->GetColWidth(i,nTab); 62 nTwipsX += (long) nWidth; 63 nPixelX += ScViewData::ToPixel( nWidth, nPPTX ); 64 } 65 66 for (SCROW nRow = nStartRow; nRow <= nEndRow-1; ++nRow) 67 { 68 SCROW nLastRow = nRow; 69 if (pDoc->RowHidden(nRow, nTab, NULL, &nLastRow)) 70 { 71 nRow = nLastRow; 72 continue; 73 } 74 75 sal_uInt16 nHeight = pDoc->GetRowHeight(nRow, nTab); 76 nTwipsY += static_cast<long>(nHeight); 77 nPixelY += ScViewData::ToPixel(nHeight, nPPTY); 78 } 79 80 // #i116848# To get a large-enough number for PixelToLogic, multiply the integer values 81 // instead of using a larger number of rows 82 if ( nTwipsY ) 83 { 84 long nMultiply = 2000000 / nTwipsY; 85 if ( nMultiply > 1 ) 86 { 87 nTwipsY *= nMultiply; 88 nPixelY *= nMultiply; 89 } 90 } 91 92 MapMode aHMMMode( MAP_100TH_MM, Point(), rZoomX, rZoomY ); 93 Point aPixelLog = pDev->PixelToLogic( Point( nPixelX,nPixelY ), aHMMMode ); 94 95 // Fraction(double) ctor can be used here (and avoid overflows of PixelLog * Zoom) 96 // because ReduceInaccurate is called later anyway. 97 98 if ( aPixelLog.X() && nTwipsX ) 99 rScaleX = Fraction( ((double)aPixelLog.X()) * 100 ((double)rZoomX.GetNumerator()) / 101 ((double)nTwipsX) / 102 ((double)HMM_PER_TWIPS) / 103 ((double)rZoomX.GetDenominator()) ); 104 else 105 rScaleX = Fraction( 1, 1 ); 106 107 if ( aPixelLog.Y() && nTwipsY ) 108 rScaleY = Fraction( ((double)aPixelLog.Y()) * 109 ((double)rZoomY.GetNumerator()) / 110 ((double)nTwipsY) / 111 ((double)HMM_PER_TWIPS) / 112 ((double)rZoomY.GetDenominator()) ); 113 else 114 rScaleY = Fraction( 1, 1 ); 115 116 // 25 bits of accuracy are needed to always hit the right part of 117 // cells in the last rows (was 17 before 1M rows). 118 rScaleX.ReduceInaccurate( 25 ); 119 rScaleY.ReduceInaccurate( 25 ); 120 } 121 122 123 124 125