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1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : /*
3 : * This file is part of the LibreOffice project.
4 : *
5 : * This Source Code Form is subject to the terms of the Mozilla Public
6 : * License, v. 2.0. If a copy of the MPL was not distributed with this
7 : * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 : *
9 : * This file incorporates work covered by the following license notice:
10 : *
11 : * Licensed to the Apache Software Foundation (ASF) under one or more
12 : * contributor license agreements. See the NOTICE file distributed
13 : * with this work for additional information regarding copyright
14 : * ownership. The ASF licenses this file to you under the Apache
15 : * License, Version 2.0 (the "License"); you may not use this file
16 : * except in compliance with the License. You may obtain a copy of
17 : * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 : */
19 :
20 : #include "unitconverter.hxx"
21 :
22 : #include <com/sun/star/awt/DeviceInfo.hpp>
23 : #include <com/sun/star/awt/FontDescriptor.hpp>
24 : #include <com/sun/star/awt/XDevice.hpp>
25 : #include <com/sun/star/awt/XFont.hpp>
26 : #include <com/sun/star/util/Date.hpp>
27 : #include <com/sun/star/util/DateTime.hpp>
28 : #include <rtl/math.hxx>
29 : #include "oox/core/filterbase.hxx"
30 : #include "oox/helper/propertyset.hxx"
31 : #include "oox/token/properties.hxx"
32 : #include "stylesbuffer.hxx"
33 :
34 : namespace oox {
35 : namespace xls {
36 :
37 : using namespace ::com::sun::star;
38 : using namespace ::com::sun::star::awt;
39 : using namespace ::com::sun::star::uno;
40 :
41 :
42 : namespace {
43 :
44 : const double MM100_PER_INCH = 2540.0;
45 : const double MM100_PER_POINT = MM100_PER_INCH / 72.0;
46 : const double MM100_PER_TWIP = MM100_PER_POINT / 20.0;
47 : const double MM100_PER_EMU = 1.0 / 360.0;
48 :
49 : /** Returns true, if the passed year is a leap year. */
50 88 : inline bool lclIsLeapYear( sal_Int32 nYear )
51 : {
52 88 : return ((nYear % 4) == 0) && (((nYear % 100) != 0) || ((nYear % 400) == 0));
53 : }
54 :
55 0 : void lclSkipYearBlock( sal_Int32& ornDays, sal_Int16& ornYear, sal_Int32 nDaysInBlock, sal_Int32 nYearsPerBlock, sal_Int32 nMaxBlocks )
56 : {
57 0 : sal_Int32 nBlocks = ::std::min< sal_Int32 >( ornDays / nDaysInBlock, nMaxBlocks );
58 0 : ornYear = static_cast< sal_Int16 >( ornYear + nYearsPerBlock * nBlocks );
59 0 : ornDays -= nBlocks * nDaysInBlock;
60 0 : }
61 :
62 : /** Returns the number of days before the passed date, starting from the null
63 : date 0000-Jan-01, using standard leap year conventions. */
64 88 : sal_Int32 lclGetDays( const util::Date& rDate )
65 : {
66 : // number of days in all full years before passed date including all leap days
67 88 : sal_Int32 nDays = rDate.Year * 365 + ((rDate.Year + 3) / 4) - ((rDate.Year + 99) / 100) + ((rDate.Year + 399) / 400);
68 : OSL_ENSURE( (1 <= rDate.Month) && (rDate.Month <= 12), "lclGetDays - invalid month" );
69 : OSL_ENSURE( (1 <= rDate.Day) && (rDate.Day <= 31), "lclGetDays - invalid day" ); // yes, this is weak...
70 88 : if( (1 <= rDate.Month) && (rDate.Month <= 12) )
71 : {
72 : // number of days at start of month jan feb mar apr may jun jul aug sep oct nov dec
73 : static const sal_Int32 spnCumDays[] = { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334 };
74 : // add number of days in full months before passed date
75 88 : nDays += spnCumDays[ rDate.Month - 1 ];
76 : // add number of days from passed date (this adds one day too much)
77 88 : nDays += rDate.Day;
78 : /* Remove the one day added too much if there is no leap day before
79 : the passed day in the passed year. This means: remove the day, if
80 : we are in january or february (leap day not reached if existing),
81 : or if the passed year is not a leap year. */
82 88 : if( (rDate.Month < 3) || !lclIsLeapYear( rDate.Year ) )
83 88 : --nDays;
84 : }
85 88 : return nDays;
86 : }
87 :
88 : } // namespace
89 :
90 44 : UnitConverter::UnitConverter( const WorkbookHelper& rHelper ) :
91 : WorkbookHelper( rHelper ),
92 : maCoeffs( UNIT_ENUM_SIZE, 1.0 ),
93 44 : mnNullDate( lclGetDays( util::Date( 30, 12, 1899 ) ) )
94 : {
95 : // initialize constant and default coefficients
96 44 : const DeviceInfo& rDeviceInfo = getBaseFilter().getGraphicHelper().getDeviceInfo();
97 44 : maCoeffs[ UNIT_INCH ] = MM100_PER_INCH;
98 44 : maCoeffs[ UNIT_POINT ] = MM100_PER_POINT;
99 44 : maCoeffs[ UNIT_TWIP ] = MM100_PER_TWIP;
100 44 : maCoeffs[ UNIT_EMU ] = MM100_PER_EMU;
101 44 : maCoeffs[ UNIT_SCREENX ] = (rDeviceInfo.PixelPerMeterX > 0) ? (100000.0 / rDeviceInfo.PixelPerMeterX) : 50.0;
102 44 : maCoeffs[ UNIT_SCREENY ] = (rDeviceInfo.PixelPerMeterY > 0) ? (100000.0 / rDeviceInfo.PixelPerMeterY) : 50.0;
103 44 : maCoeffs[ UNIT_REFDEVX ] = 12.5; // default: 1 px = 0.125 mm
104 44 : maCoeffs[ UNIT_REFDEVY ] = 12.5; // default: 1 px = 0.125 mm
105 44 : maCoeffs[ UNIT_DIGIT ] = 200.0; // default: 1 digit = 2 mm
106 44 : maCoeffs[ UNIT_SPACE ] = 100.0; // default 1 space = 1 mm
107 :
108 : // error code maps
109 44 : addErrorCode( BIFF_ERR_NULL, "#NULL!" );
110 44 : addErrorCode( BIFF_ERR_DIV0, "#DIV/0!" );
111 44 : addErrorCode( BIFF_ERR_VALUE, "#VALUE!" );
112 44 : addErrorCode( BIFF_ERR_REF, "#REF!" );
113 44 : addErrorCode( BIFF_ERR_NAME, "#NAME?" );
114 44 : addErrorCode( BIFF_ERR_NUM, "#NUM!" );
115 44 : addErrorCode( BIFF_ERR_NA, "#NA" );
116 44 : }
117 :
118 44 : void UnitConverter::finalizeImport()
119 : {
120 44 : PropertySet aDocProps( getDocument() );
121 88 : Reference< XDevice > xDevice( aDocProps.getAnyProperty( PROP_ReferenceDevice ), UNO_QUERY );
122 44 : if( xDevice.is() )
123 : {
124 : // get reference device metric first, needed to get character widths below
125 44 : DeviceInfo aInfo = xDevice->getInfo();
126 44 : maCoeffs[ UNIT_REFDEVX ] = 100000.0 / aInfo.PixelPerMeterX;
127 44 : maCoeffs[ UNIT_REFDEVY ] = 100000.0 / aInfo.PixelPerMeterY;
128 :
129 : // get character widths from default font
130 44 : if( const Font* pDefFont = getStyles().getDefaultFont().get() )
131 : {
132 : // XDevice expects pixels in font descriptor, but font contains twips
133 44 : FontDescriptor aDesc = pDefFont->getFontDescriptor();
134 88 : Reference< XFont > xFont = xDevice->getFont( aDesc );
135 44 : if( xFont.is() )
136 : {
137 : // get maximum width of all digits
138 44 : sal_Int32 nDigitWidth = 0;
139 484 : for( sal_Unicode cChar = '0'; cChar <= '9'; ++cChar )
140 440 : nDigitWidth = ::std::max( nDigitWidth, scaleToMm100( xFont->getCharWidth( cChar ), UNIT_TWIP ) );
141 44 : if( nDigitWidth > 0 )
142 44 : maCoeffs[ UNIT_DIGIT ] = nDigitWidth;
143 : // get width of space character
144 44 : sal_Int32 nSpaceWidth = scaleToMm100( xFont->getCharWidth( ' ' ), UNIT_TWIP );
145 44 : if( nSpaceWidth > 0 )
146 44 : maCoeffs[ UNIT_SPACE ] = nSpaceWidth;
147 44 : }
148 : }
149 44 : }
150 44 : }
151 :
152 44 : void UnitConverter::finalizeNullDate( const util::Date& rNullDate )
153 : {
154 : // convert the nulldate to number of days since 0000-Jan-01
155 44 : mnNullDate = lclGetDays( rNullDate );
156 44 : }
157 :
158 : // conversion -----------------------------------------------------------------
159 :
160 8 : double UnitConverter::scaleValue( double fValue, Unit eFromUnit, Unit eToUnit ) const
161 : {
162 8 : return (eFromUnit == eToUnit) ? fValue : (fValue * getCoefficient( eFromUnit ) / getCoefficient( eToUnit ));
163 : }
164 :
165 2148 : sal_Int32 UnitConverter::scaleToMm100( double fValue, Unit eUnit ) const
166 : {
167 2148 : return static_cast< sal_Int32 >( fValue * getCoefficient( eUnit ) + 0.5 );
168 : }
169 :
170 73 : double UnitConverter::scaleFromMm100( sal_Int32 nMm100, Unit eUnit ) const
171 : {
172 73 : return static_cast< double >( nMm100 ) / getCoefficient( eUnit );
173 : }
174 :
175 0 : double UnitConverter::calcSerialFromDateTime( const util::DateTime& rDateTime ) const
176 : {
177 0 : sal_Int32 nDays = lclGetDays( util::Date( rDateTime.Day, rDateTime.Month, rDateTime.Year ) ) - mnNullDate;
178 : OSL_ENSURE( nDays >= 0, "UnitConverter::calcDateTimeSerial - invalid date" );
179 : OSL_ENSURE( (rDateTime.Hours <= 23) && (rDateTime.Minutes <= 59) && (rDateTime.Seconds <= 59), "UnitConverter::calcDateTimeSerial - invalid time" );
180 0 : return nDays + rDateTime.Hours / 24.0 + rDateTime.Minutes / 1440.0 + rDateTime.Seconds / 86400.0;
181 : }
182 :
183 0 : util::DateTime UnitConverter::calcDateTimeFromSerial( double fSerial ) const
184 : {
185 0 : util::DateTime aDateTime( 0, 0, 0, 0, 1, 1, 0, false );
186 0 : double fDays = 0.0;
187 0 : double fTime = modf( fSerial, &fDays );
188 :
189 : // calculate date from number of days with O(1) complexity
190 0 : sal_Int32 nDays = getLimitedValue< sal_Int32, double >( fDays + mnNullDate, 0, 3652424 );
191 : // skip year 0, assumed to be a leap year. By starting at year 1, leap years can be handled easily
192 0 : if( nDays >= 366 ) { ++aDateTime.Year; nDays -= 366; }
193 : // skip full blocks of 400, 100, 4 years, and remaining full years
194 0 : lclSkipYearBlock( nDays, aDateTime.Year, 400 * 365 + 97, 400, 24 );
195 0 : lclSkipYearBlock( nDays, aDateTime.Year, 100 * 365 + 24, 100, 3 );
196 0 : lclSkipYearBlock( nDays, aDateTime.Year, 4 * 365 + 1, 4, 24 );
197 0 : lclSkipYearBlock( nDays, aDateTime.Year, 365, 1, 3 );
198 : // skip full months of current year
199 : static const sal_Int32 spnDaysInMonth[] = { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
200 0 : if( (nDays >= 59) && !lclIsLeapYear( aDateTime.Year ) ) ++nDays;
201 0 : const sal_Int32* pnDaysInMonth = spnDaysInMonth;
202 0 : while( *pnDaysInMonth >= nDays ) { ++aDateTime.Month; nDays -= *pnDaysInMonth; ++pnDaysInMonth; }
203 0 : aDateTime.Day = static_cast< sal_uInt16 >( nDays + 1 );
204 :
205 : // calculate time from fractional part of serial
206 0 : sal_Int32 nTime = getLimitedValue< sal_Int32, double >( fTime * 86400, 0, 86399 );
207 0 : aDateTime.Seconds = static_cast< sal_uInt16 >( nTime % 60 );
208 0 : nTime /= 60;
209 0 : aDateTime.Minutes = static_cast< sal_uInt16 >( nTime % 60 );
210 0 : aDateTime.Hours = static_cast< sal_uInt16 >( nTime / 60 );
211 :
212 0 : return aDateTime;
213 : }
214 :
215 0 : sal_uInt8 UnitConverter::calcBiffErrorCode( const OUString& rErrorCode ) const
216 : {
217 0 : OoxErrorCodeMap::const_iterator aIt = maOoxErrCodes.find( rErrorCode );
218 0 : return (aIt == maOoxErrCodes.end()) ? BIFF_ERR_NA : aIt->second;
219 : }
220 :
221 308 : void UnitConverter::addErrorCode( sal_uInt8 nErrorCode, const OUString& rErrorCode )
222 : {
223 308 : maOoxErrCodes[ rErrorCode ] = nErrorCode;
224 308 : }
225 :
226 2237 : double UnitConverter::getCoefficient( Unit eUnit ) const
227 : {
228 : OSL_ENSURE( static_cast< size_t >( eUnit ) < UNIT_ENUM_SIZE, "UnitConverter::getCoefficient - invalid unit" );
229 2237 : return maCoeffs[ static_cast< size_t >( eUnit ) ];
230 : }
231 :
232 : } // namespace xls
233 18 : } // namespace oox
234 :
235 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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