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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 : namespace {
42 :
43 : const double MM100_PER_INCH = 2540.0;
44 : const double MM100_PER_POINT = MM100_PER_INCH / 72.0;
45 : const double MM100_PER_TWIP = MM100_PER_POINT / 20.0;
46 : const double MM100_PER_EMU = 1.0 / 360.0;
47 :
48 : /** Returns true, if the passed year is a leap year. */
49 256 : inline bool lclIsLeapYear( sal_Int32 nYear )
50 : {
51 256 : return ((nYear % 4) == 0) && (((nYear % 100) != 0) || ((nYear % 400) == 0));
52 : }
53 :
54 0 : void lclSkipYearBlock( sal_Int32& ornDays, sal_Int16& ornYear, sal_Int32 nDaysInBlock, sal_Int32 nYearsPerBlock, sal_Int32 nMaxBlocks )
55 : {
56 0 : sal_Int32 nBlocks = ::std::min< sal_Int32 >( ornDays / nDaysInBlock, nMaxBlocks );
57 0 : ornYear = static_cast< sal_Int16 >( ornYear + nYearsPerBlock * nBlocks );
58 0 : ornDays -= nBlocks * nDaysInBlock;
59 0 : }
60 :
61 : /** Returns the number of days before the passed date, starting from the null
62 : date 0000-Jan-01, using standard leap year conventions. */
63 256 : sal_Int32 lclGetDays( const util::Date& rDate )
64 : {
65 : // number of days in all full years before passed date including all leap days
66 256 : sal_Int32 nDays = rDate.Year * 365 + ((rDate.Year + 3) / 4) - ((rDate.Year + 99) / 100) + ((rDate.Year + 399) / 400);
67 : OSL_ENSURE( (1 <= rDate.Month) && (rDate.Month <= 12), "lclGetDays - invalid month" );
68 : OSL_ENSURE( (1 <= rDate.Day) && (rDate.Day <= 31), "lclGetDays - invalid day" ); // yes, this is weak...
69 256 : if( (1 <= rDate.Month) && (rDate.Month <= 12) )
70 : {
71 : // number of days at start of month jan feb mar apr may jun jul aug sep oct nov dec
72 : static const sal_Int32 spnCumDays[] = { 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334 };
73 : // add number of days in full months before passed date
74 256 : nDays += spnCumDays[ rDate.Month - 1 ];
75 : // add number of days from passed date (this adds one day too much)
76 256 : nDays += rDate.Day;
77 : /* Remove the one day added too much if there is no leap day before
78 : the passed day in the passed year. This means: remove the day, if
79 : we are in january or february (leap day not reached if existing),
80 : or if the passed year is not a leap year. */
81 256 : if( (rDate.Month < 3) || !lclIsLeapYear( rDate.Year ) )
82 256 : --nDays;
83 : }
84 256 : return nDays;
85 : }
86 :
87 : } // namespace
88 :
89 128 : UnitConverter::UnitConverter( const WorkbookHelper& rHelper ) :
90 : WorkbookHelper( rHelper ),
91 : maCoeffs( UNIT_ENUM_SIZE, 1.0 ),
92 128 : mnNullDate( lclGetDays( util::Date( 30, 12, 1899 ) ) )
93 : {
94 : // initialize constant and default coefficients
95 128 : const DeviceInfo& rDeviceInfo = getBaseFilter().getGraphicHelper().getDeviceInfo();
96 128 : maCoeffs[ UNIT_INCH ] = MM100_PER_INCH;
97 128 : maCoeffs[ UNIT_POINT ] = MM100_PER_POINT;
98 128 : maCoeffs[ UNIT_TWIP ] = MM100_PER_TWIP;
99 128 : maCoeffs[ UNIT_EMU ] = MM100_PER_EMU;
100 128 : maCoeffs[ UNIT_SCREENX ] = (rDeviceInfo.PixelPerMeterX > 0) ? (100000.0 / rDeviceInfo.PixelPerMeterX) : 50.0;
101 128 : maCoeffs[ UNIT_SCREENY ] = (rDeviceInfo.PixelPerMeterY > 0) ? (100000.0 / rDeviceInfo.PixelPerMeterY) : 50.0;
102 128 : maCoeffs[ UNIT_REFDEVX ] = 12.5; // default: 1 px = 0.125 mm
103 128 : maCoeffs[ UNIT_REFDEVY ] = 12.5; // default: 1 px = 0.125 mm
104 128 : maCoeffs[ UNIT_DIGIT ] = 200.0; // default: 1 digit = 2 mm
105 128 : maCoeffs[ UNIT_SPACE ] = 100.0; // default 1 space = 1 mm
106 :
107 : // error code maps
108 128 : addErrorCode( BIFF_ERR_NULL, "#NULL!" );
109 128 : addErrorCode( BIFF_ERR_DIV0, "#DIV/0!" );
110 128 : addErrorCode( BIFF_ERR_VALUE, "#VALUE!" );
111 128 : addErrorCode( BIFF_ERR_REF, "#REF!" );
112 128 : addErrorCode( BIFF_ERR_NAME, "#NAME?" );
113 128 : addErrorCode( BIFF_ERR_NUM, "#NUM!" );
114 128 : addErrorCode( BIFF_ERR_NA, "#NA" );
115 128 : }
116 :
117 128 : void UnitConverter::finalizeImport()
118 : {
119 128 : PropertySet aDocProps( getDocument() );
120 256 : Reference< XDevice > xDevice( aDocProps.getAnyProperty( PROP_ReferenceDevice ), UNO_QUERY );
121 128 : if( xDevice.is() )
122 : {
123 : // get reference device metric first, needed to get character widths below
124 128 : DeviceInfo aInfo = xDevice->getInfo();
125 128 : maCoeffs[ UNIT_REFDEVX ] = 100000.0 / aInfo.PixelPerMeterX;
126 128 : maCoeffs[ UNIT_REFDEVY ] = 100000.0 / aInfo.PixelPerMeterY;
127 :
128 : // get character widths from default font
129 128 : if( const oox::xls::Font* pDefFont = getStyles().getDefaultFont().get() )
130 : {
131 : // XDevice expects pixels in font descriptor, but font contains twips
132 128 : FontDescriptor aDesc = pDefFont->getFontDescriptor();
133 256 : Reference< XFont > xFont = xDevice->getFont( aDesc );
134 128 : if( xFont.is() )
135 : {
136 : // get maximum width of all digits
137 128 : sal_Int32 nDigitWidth = 0;
138 1408 : for( sal_Unicode cChar = '0'; cChar <= '9'; ++cChar )
139 1280 : nDigitWidth = ::std::max( nDigitWidth, scaleToMm100( xFont->getCharWidth( cChar ), UNIT_TWIP ) );
140 128 : if( nDigitWidth > 0 )
141 128 : maCoeffs[ UNIT_DIGIT ] = nDigitWidth;
142 : // get width of space character
143 128 : sal_Int32 nSpaceWidth = scaleToMm100( xFont->getCharWidth( ' ' ), UNIT_TWIP );
144 128 : if( nSpaceWidth > 0 )
145 128 : maCoeffs[ UNIT_SPACE ] = nSpaceWidth;
146 128 : }
147 : }
148 128 : }
149 128 : }
150 :
151 128 : void UnitConverter::finalizeNullDate( const util::Date& rNullDate )
152 : {
153 : // convert the nulldate to number of days since 0000-Jan-01
154 128 : mnNullDate = lclGetDays( rNullDate );
155 128 : }
156 :
157 : // conversion -----------------------------------------------------------------
158 :
159 16 : double UnitConverter::scaleValue( double fValue, Unit eFromUnit, Unit eToUnit ) const
160 : {
161 16 : return (eFromUnit == eToUnit) ? fValue : (fValue * getCoefficient( eFromUnit ) / getCoefficient( eToUnit ));
162 : }
163 :
164 6368 : sal_Int32 UnitConverter::scaleToMm100( double fValue, Unit eUnit ) const
165 : {
166 6368 : return static_cast< sal_Int32 >( fValue * getCoefficient( eUnit ) + 0.5 );
167 : }
168 :
169 236 : double UnitConverter::scaleFromMm100( sal_Int32 nMm100, Unit eUnit ) const
170 : {
171 236 : return static_cast< double >( nMm100 ) / getCoefficient( eUnit );
172 : }
173 :
174 0 : double UnitConverter::calcSerialFromDateTime( const util::DateTime& rDateTime ) const
175 : {
176 0 : sal_Int32 nDays = lclGetDays( util::Date( rDateTime.Day, rDateTime.Month, rDateTime.Year ) ) - mnNullDate;
177 : OSL_ENSURE( nDays >= 0, "UnitConverter::calcDateTimeSerial - invalid date" );
178 : OSL_ENSURE( (rDateTime.Hours <= 23) && (rDateTime.Minutes <= 59) && (rDateTime.Seconds <= 59), "UnitConverter::calcDateTimeSerial - invalid time" );
179 0 : return nDays + rDateTime.Hours / 24.0 + rDateTime.Minutes / 1440.0 + rDateTime.Seconds / 86400.0;
180 : }
181 :
182 0 : util::DateTime UnitConverter::calcDateTimeFromSerial( double fSerial ) const
183 : {
184 0 : util::DateTime aDateTime( 0, 0, 0, 0, 1, 1, 0, false );
185 0 : double fDays = 0.0;
186 0 : double fTime = modf( fSerial, &fDays );
187 :
188 : // calculate date from number of days with O(1) complexity
189 0 : sal_Int32 nDays = getLimitedValue< sal_Int32, double >( fDays + mnNullDate, 0, 3652424 );
190 : // skip year 0, assumed to be a leap year. By starting at year 1, leap years can be handled easily
191 0 : if( nDays >= 366 ) { ++aDateTime.Year; nDays -= 366; }
192 : // skip full blocks of 400, 100, 4 years, and remaining full years
193 0 : lclSkipYearBlock( nDays, aDateTime.Year, 400 * 365 + 97, 400, 24 );
194 0 : lclSkipYearBlock( nDays, aDateTime.Year, 100 * 365 + 24, 100, 3 );
195 0 : lclSkipYearBlock( nDays, aDateTime.Year, 4 * 365 + 1, 4, 24 );
196 0 : lclSkipYearBlock( nDays, aDateTime.Year, 365, 1, 3 );
197 : // skip full months of current year
198 : static const sal_Int32 spnDaysInMonth[] = { 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
199 0 : if( (nDays >= 59) && !lclIsLeapYear( aDateTime.Year ) ) ++nDays;
200 0 : const sal_Int32* pnDaysInMonth = spnDaysInMonth;
201 0 : while( *pnDaysInMonth >= nDays ) { ++aDateTime.Month; nDays -= *pnDaysInMonth; ++pnDaysInMonth; }
202 0 : aDateTime.Day = static_cast< sal_uInt16 >( nDays + 1 );
203 :
204 : // calculate time from fractional part of serial
205 0 : sal_Int32 nTime = getLimitedValue< sal_Int32, double >( fTime * 86400, 0, 86399 );
206 0 : aDateTime.Seconds = static_cast< sal_uInt16 >( nTime % 60 );
207 0 : nTime /= 60;
208 0 : aDateTime.Minutes = static_cast< sal_uInt16 >( nTime % 60 );
209 0 : aDateTime.Hours = static_cast< sal_uInt16 >( nTime / 60 );
210 :
211 0 : return aDateTime;
212 : }
213 :
214 0 : sal_uInt8 UnitConverter::calcBiffErrorCode( const OUString& rErrorCode ) const
215 : {
216 0 : OoxErrorCodeMap::const_iterator aIt = maOoxErrCodes.find( rErrorCode );
217 0 : return (aIt == maOoxErrCodes.end()) ? BIFF_ERR_NA : aIt->second;
218 : }
219 :
220 896 : void UnitConverter::addErrorCode( sal_uInt8 nErrorCode, const OUString& rErrorCode )
221 : {
222 896 : maOoxErrCodes[ rErrorCode ] = nErrorCode;
223 896 : }
224 :
225 6636 : double UnitConverter::getCoefficient( Unit eUnit ) const
226 : {
227 : OSL_ENSURE( static_cast< size_t >( eUnit ) < UNIT_ENUM_SIZE, "UnitConverter::getCoefficient - invalid unit" );
228 6636 : return maCoeffs[ static_cast< size_t >( eUnit ) ];
229 : }
230 :
231 : } // namespace xls
232 48 : } // namespace oox
233 :
234 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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